* [PATCH 1/4] Consolidate sys32_readv and sys32_writev
2004-04-16 16:00 consolidate compat readv/writev/execve/select/nfsservctl [v2] Arnd Bergmann
@ 2004-04-16 16:02 ` Arnd Bergmann
2004-04-16 16:04 ` [PATCH 2/4] Consolidate do_execve32 Arnd Bergmann
` (2 subsequent siblings)
3 siblings, 0 replies; 8+ messages in thread
From: Arnd Bergmann @ 2004-04-16 16:02 UTC (permalink / raw)
To: linux-kernel
The seven implementations of this have gone out of sync and are mostly buggy.
The new compat_sys_* version is based on the ppc64 implementation, which
most closely resembles the code in sys_readv/sys_writev.
Tested on x86_64, ia64 and s390.
arch/ia64/ia32/ia32_entry.S | 4
arch/ia64/ia32/sys_ia32.c | 79 ---------------
arch/mips/kernel/linux32.c | 144 ----------------------------
arch/mips/kernel/scall64-n32.S | 4
arch/mips/kernel/scall64-o32.S | 4
arch/parisc/kernel/sys_parisc32.c | 143 ----------------------------
arch/parisc/kernel/syscall_table.S | 4
arch/ppc64/kernel/misc.S | 4
arch/ppc64/kernel/sys_ppc32.c | 172 ----------------------------------
arch/s390/kernel/compat_linux.c | 138 ---------------------------
arch/s390/kernel/compat_wrapper.S | 16 +--
arch/s390/kernel/syscalls.S | 4
arch/sparc64/kernel/sys_sparc32.c | 176 -----------------------------------
arch/sparc64/kernel/sys_sunos32.c | 7 -
arch/sparc64/kernel/systbls.S | 2
arch/x86_64/ia32/ia32entry.S | 4
arch/x86_64/ia32/sys_ia32.c | 98 -------------------
fs/compat.c | 186 +++++++++++++++++++++++++++++++++++++
include/linux/compat.h | 6 +
19 files changed, 217 insertions(+), 978 deletions(-)
===== arch/ia64/ia32/ia32_entry.S 1.35 vs edited =====
--- 1.35/arch/ia64/ia32/ia32_entry.S Fri Mar 26 20:05:24 2004
+++ edited/arch/ia64/ia32/ia32_entry.S Thu Apr 15 17:22:00 2004
@@ -353,8 +353,8 @@
data8 sys32_select
data8 sys_flock
data8 sys32_msync
- data8 sys32_readv /* 145 */
- data8 sys32_writev
+ data8 compat_sys_readv /* 145 */
+ data8 compat_sys_writev
data8 sys_getsid
data8 sys_fdatasync
data8 sys32_sysctl
===== arch/ia64/ia32/sys_ia32.c 1.94 vs edited =====
--- 1.94/arch/ia64/ia32/sys_ia32.c Mon Apr 12 19:54:22 2004
+++ edited/arch/ia64/ia32/sys_ia32.c Thu Apr 15 17:22:00 2004
@@ -941,85 +941,6 @@
(struct compat_timeval *) A(a.tvp));
}
-static struct iovec *
-get_compat_iovec (struct compat_iovec *iov32, struct iovec *iov_buf, u32 count, int type)
-{
- u32 i, buf, len;
- struct iovec *ivp, *iov;
-
- /* Get the "struct iovec" from user memory */
-
- if (!count)
- return 0;
- if (verify_area(VERIFY_READ, iov32, sizeof(struct compat_iovec)*count))
- return NULL;
- if (count > UIO_MAXIOV)
- return NULL;
- if (count > UIO_FASTIOV) {
- iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
- if (!iov)
- return NULL;
- } else
- iov = iov_buf;
-
- ivp = iov;
- for (i = 0; i < count; i++) {
- if (__get_user(len, &iov32->iov_len) || __get_user(buf, &iov32->iov_base)) {
- if (iov != iov_buf)
- kfree(iov);
- return NULL;
- }
- if (verify_area(type, (void *)A(buf), len)) {
- if (iov != iov_buf)
- kfree(iov);
- return((struct iovec *)0);
- }
- ivp->iov_base = (void *)A(buf);
- ivp->iov_len = (__kernel_size_t) len;
- iov32++;
- ivp++;
- }
- return iov;
-}
-
-asmlinkage long
-sys32_readv (int fd, struct compat_iovec *vector, u32 count)
-{
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov;
- long ret;
- mm_segment_t old_fs = get_fs();
-
- iov = get_compat_iovec(vector, iovstack, count, VERIFY_WRITE);
- if (!iov)
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_readv(fd, iov, count);
- set_fs(old_fs);
- if (iov != iovstack)
- kfree(iov);
- return ret;
-}
-
-asmlinkage long
-sys32_writev (int fd, struct compat_iovec *vector, u32 count)
-{
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov;
- long ret;
- mm_segment_t old_fs = get_fs();
-
- iov = get_compat_iovec(vector, iovstack, count, VERIFY_READ);
- if (!iov)
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_writev(fd, iov, count);
- set_fs(old_fs);
- if (iov != iovstack)
- kfree(iov);
- return ret;
-}
-
#define SEMOP 1
#define SEMGET 2
#define SEMCTL 3
===== arch/mips/kernel/linux32.c 1.22 vs edited =====
--- 1.22/arch/mips/kernel/linux32.c Wed Feb 25 11:31:12 2004
+++ edited/arch/mips/kernel/linux32.c Thu Apr 15 17:22:00 2004
@@ -671,150 +671,6 @@
return sys_llseek(fd, offset_high, offset_low, result, origin);
}
-typedef ssize_t (*IO_fn_t)(struct file *, char *, size_t, loff_t *);
-
-static long
-do_readv_writev32(int type, struct file *file, const struct compat_iovec *vector,
- u32 count)
-{
- unsigned long tot_len;
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov=iovstack, *ivp;
- struct inode *inode;
- long retval, i;
- IO_fn_t fn;
-
- /* First get the "struct iovec" from user memory and
- * verify all the pointers
- */
- if (!count)
- return 0;
- if(verify_area(VERIFY_READ, vector, sizeof(struct compat_iovec)*count))
- return -EFAULT;
- if (count > UIO_MAXIOV)
- return -EINVAL;
- if (count > UIO_FASTIOV) {
- iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
- if (!iov)
- return -ENOMEM;
- }
-
- tot_len = 0;
- i = count;
- ivp = iov;
- while (i > 0) {
- u32 len;
- u32 buf;
-
- __get_user(len, &vector->iov_len);
- __get_user(buf, &vector->iov_base);
- tot_len += len;
- ivp->iov_base = (void *)A(buf);
- ivp->iov_len = (__kernel_size_t) len;
- vector++;
- ivp++;
- i--;
- }
-
- inode = file->f_dentry->d_inode;
- /* VERIFY_WRITE actually means a read, as we write to user space */
- retval = locks_verify_area((type == VERIFY_WRITE
- ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
- inode, file, file->f_pos, tot_len);
- if (retval) {
- if (iov != iovstack)
- kfree(iov);
- return retval;
- }
-
- /* Then do the actual IO. Note that sockets need to be handled
- * specially as they have atomicity guarantees and can handle
- * iovec's natively
- */
-#ifdef CONFIG_NET
- if (inode->i_sock) {
- int err;
- err = sock_readv_writev(type, inode, file, iov, count, tot_len);
- if (iov != iovstack)
- kfree(iov);
- return err;
- }
-#endif
-
- if (!file->f_op) {
- if (iov != iovstack)
- kfree(iov);
- return -EINVAL;
- }
- /* VERIFY_WRITE actually means a read, as we write to user space */
- fn = file->f_op->read;
- if (type == VERIFY_READ)
- fn = (IO_fn_t) file->f_op->write;
- ivp = iov;
- while (count > 0) {
- void * base;
- int len, nr;
-
- base = ivp->iov_base;
- len = ivp->iov_len;
- ivp++;
- count--;
- nr = fn(file, base, len, &file->f_pos);
- if (nr < 0) {
- if (retval)
- break;
- retval = nr;
- break;
- }
- retval += nr;
- if (nr != len)
- break;
- }
- if (iov != iovstack)
- kfree(iov);
-
- return retval;
-}
-
-asmlinkage long
-sys32_readv(int fd, struct compat_iovec *vector, u32 count)
-{
- struct file *file;
- ssize_t ret;
-
- ret = -EBADF;
- file = fget(fd);
- if (!file)
- goto bad_file;
- if (file->f_op && (file->f_mode & FMODE_READ) &&
- (file->f_op->readv || file->f_op->read))
- ret = do_readv_writev32(VERIFY_WRITE, file, vector, count);
-
- fput(file);
-
-bad_file:
- return ret;
-}
-
-asmlinkage long
-sys32_writev(int fd, struct compat_iovec *vector, u32 count)
-{
- struct file *file;
- ssize_t ret;
-
- ret = -EBADF;
- file = fget(fd);
- if(!file)
- goto bad_file;
- if (file->f_op && (file->f_mode & FMODE_WRITE) &&
- (file->f_op->writev || file->f_op->write))
- ret = do_readv_writev32(VERIFY_READ, file, vector, count);
- fput(file);
-
-bad_file:
- return ret;
-}
-
/* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
lseek back to original location. They fail just like lseek does on
non-seekable files. */
===== arch/mips/kernel/scall64-n32.S 1.2 vs edited =====
--- 1.2/arch/mips/kernel/scall64-n32.S Thu Feb 19 21:53:00 2004
+++ edited/arch/mips/kernel/scall64-n32.S Thu Apr 15 17:22:00 2004
@@ -128,8 +128,8 @@
PTR compat_sys_ioctl /* 6015 */
PTR sys_pread64
PTR sys_pwrite64
- PTR sys32_readv
- PTR sys32_writev
+ PTR compat_sys_readv
+ PTR compat_sys_writev
PTR sys_access /* 6020 */
PTR sys_pipe
PTR sys32_select
===== arch/mips/kernel/scall64-o32.S 1.2 vs edited =====
--- 1.2/arch/mips/kernel/scall64-o32.S Thu Feb 19 21:53:00 2004
+++ edited/arch/mips/kernel/scall64-o32.S Thu Apr 15 17:22:00 2004
@@ -400,8 +400,8 @@
sys sys32_select 5
sys sys_flock 2
sys sys_msync 3
- sys sys32_readv 3 /* 4145 */
- sys sys32_writev 3
+ sys compat_sys_readv 3 /* 4145 */
+ sys compat_sys_writev 3
sys sys_cacheflush 3
sys sys_cachectl 3
sys sys_sysmips 4
===== arch/parisc/kernel/sys_parisc32.c 1.25 vs edited =====
--- 1.25/arch/parisc/kernel/sys_parisc32.c Mon Apr 12 19:54:22 2004
+++ edited/arch/parisc/kernel/sys_parisc32.c Thu Apr 15 17:22:00 2004
@@ -609,149 +609,6 @@
return error;
}
-/* readv/writev stolen from mips64 */
-typedef ssize_t (*IO_fn_t)(struct file *, char *, size_t, loff_t *);
-
-static long
-do_readv_writev32(int type, struct file *file, const struct compat_iovec *vector,
- u32 count)
-{
- unsigned long tot_len;
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov=iovstack, *ivp;
- struct inode *inode;
- long retval, i;
- IO_fn_t fn;
-
- /* First get the "struct iovec" from user memory and
- * verify all the pointers
- */
- if (!count)
- return 0;
- if(verify_area(VERIFY_READ, vector, sizeof(struct compat_iovec)*count))
- return -EFAULT;
- if (count > UIO_MAXIOV)
- return -EINVAL;
- if (count > UIO_FASTIOV) {
- iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
- if (!iov)
- return -ENOMEM;
- }
-
- tot_len = 0;
- i = count;
- ivp = iov;
- while (i > 0) {
- u32 len;
- u32 buf;
-
- __get_user(len, &vector->iov_len);
- __get_user(buf, &vector->iov_base);
- tot_len += len;
- ivp->iov_base = compat_ptr(buf);
- ivp->iov_len = (compat_size_t) len;
- vector++;
- ivp++;
- i--;
- }
-
- inode = file->f_dentry->d_inode;
- /* VERIFY_WRITE actually means a read, as we write to user space */
- retval = locks_verify_area((type == VERIFY_WRITE
- ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
- inode, file, file->f_pos, tot_len);
- if (retval) {
- if (iov != iovstack)
- kfree(iov);
- return retval;
- }
-
- /* Then do the actual IO. Note that sockets need to be handled
- * specially as they have atomicity guarantees and can handle
- * iovec's natively
- */
- if (inode->i_sock) {
- int err;
- err = sock_readv_writev(type, inode, file, iov, count, tot_len);
- if (iov != iovstack)
- kfree(iov);
- return err;
- }
-
- if (!file->f_op) {
- if (iov != iovstack)
- kfree(iov);
- return -EINVAL;
- }
- /* VERIFY_WRITE actually means a read, as we write to user space */
- fn = file->f_op->read;
- if (type == VERIFY_READ)
- fn = (IO_fn_t) file->f_op->write;
- ivp = iov;
- while (count > 0) {
- void * base;
- int len, nr;
-
- base = ivp->iov_base;
- len = ivp->iov_len;
- ivp++;
- count--;
- nr = fn(file, base, len, &file->f_pos);
- if (nr < 0) {
- if (retval)
- break;
- retval = nr;
- break;
- }
- retval += nr;
- if (nr != len)
- break;
- }
- if (iov != iovstack)
- kfree(iov);
-
- return retval;
-}
-
-asmlinkage long
-sys32_readv(int fd, struct compat_iovec *vector, u32 count)
-{
- struct file *file;
- ssize_t ret;
-
- ret = -EBADF;
- file = fget(fd);
- if (!file)
- goto bad_file;
- if (file->f_op && (file->f_mode & FMODE_READ) &&
- (file->f_op->readv || file->f_op->read))
- ret = do_readv_writev32(VERIFY_WRITE, file, vector, count);
-
- fput(file);
-
-bad_file:
- return ret;
-}
-
-asmlinkage long
-sys32_writev(int fd, struct compat_iovec *vector, u32 count)
-{
- struct file *file;
- ssize_t ret;
-
- ret = -EBADF;
- file = fget(fd);
- if(!file)
- goto bad_file;
- if (file->f_op && (file->f_mode & FMODE_WRITE) &&
- (file->f_op->writev || file->f_op->write))
- ret = do_readv_writev32(VERIFY_READ, file, vector, count);
- fput(file);
-
-bad_file:
- return ret;
-}
-
/*** copied from mips64 ***/
/*
* Ooo, nasty. We need here to frob 32-bit unsigned longs to
===== arch/parisc/kernel/syscall_table.S 1.4 vs edited =====
--- 1.4/arch/parisc/kernel/syscall_table.S Fri Mar 26 20:05:25 2004
+++ edited/arch/parisc/kernel/syscall_table.S Thu Apr 15 17:22:00 2004
@@ -236,8 +236,8 @@
ENTRY_SAME(flock)
ENTRY_SAME(msync)
/* struct iovec contains pointers */
- ENTRY_DIFF(readv) /* 145 */
- ENTRY_DIFF(writev)
+ ENTRY_COMP(readv) /* 145 */
+ ENTRY_COMP(writev)
ENTRY_SAME(getsid)
ENTRY_SAME(fdatasync)
/* struct __sysctl_args is a mess */
===== arch/ppc64/kernel/misc.S 1.75 vs edited =====
--- 1.75/arch/ppc64/kernel/misc.S Mon Apr 12 19:54:08 2004
+++ edited/arch/ppc64/kernel/misc.S Thu Apr 15 17:22:00 2004
@@ -717,8 +717,8 @@
.llong .ppc32_select
.llong .sys_flock
.llong .sys_msync
- .llong .sys32_readv /* 145 */
- .llong .sys32_writev
+ .llong .compat_sys_readv /* 145 */
+ .llong .compat_sys_writev
.llong .sys32_getsid
.llong .sys_fdatasync
.llong .sys32_sysctl
===== arch/ppc64/kernel/sys_ppc32.c 1.86 vs edited =====
--- 1.86/arch/ppc64/kernel/sys_ppc32.c Wed Mar 24 13:24:38 2004
+++ edited/arch/ppc64/kernel/sys_ppc32.c Thu Apr 15 17:22:00 2004
@@ -78,178 +78,6 @@
#include "pci.h"
-typedef ssize_t (*io_fn_t)(struct file *, char *, size_t, loff_t *);
-typedef ssize_t (*iov_fn_t)(struct file *, const struct iovec *, unsigned long, loff_t *);
-
-static long do_readv_writev32(int type, struct file *file,
- const struct compat_iovec *vector, u32 count)
-{
- compat_ssize_t tot_len;
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov=iovstack, *ivp;
- struct inode *inode;
- long retval, i;
- io_fn_t fn;
- iov_fn_t fnv;
-
- /*
- * SuS says "The readv() function *may* fail if the iovcnt argument
- * was less than or equal to 0, or greater than {IOV_MAX}. Linux has
- * traditionally returned zero for zero segments, so...
- */
- retval = 0;
- if (count == 0)
- goto out;
-
- /* First get the "struct iovec" from user memory and
- * verify all the pointers
- */
- retval = -EINVAL;
- if (count > UIO_MAXIOV)
- goto out;
- if (!file->f_op)
- goto out;
- if (count > UIO_FASTIOV) {
- retval = -ENOMEM;
- iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
- if (!iov)
- goto out;
- }
- retval = -EFAULT;
- if (verify_area(VERIFY_READ, vector, sizeof(struct compat_iovec)*count))
- goto out;
-
- /*
- * Single unix specification:
- * We should -EINVAL if an element length is not >= 0 and fitting an
- * ssize_t. The total length is fitting an ssize_t
- *
- * Be careful here because iov_len is a size_t not an ssize_t
- */
- tot_len = 0;
- i = count;
- ivp = iov;
- retval = -EINVAL;
- while(i > 0) {
- compat_ssize_t tmp = tot_len;
- compat_ssize_t len;
- u32 buf;
-
- if (__get_user(len, &vector->iov_len) ||
- __get_user(buf, &vector->iov_base)) {
- retval = -EFAULT;
- goto out;
- }
- if (len < 0) /* size_t not fitting an compat_ssize_t .. */
- goto out;
- tot_len += len;
- if (tot_len < tmp) /* maths overflow on the compat_ssize_t */
- goto out;
- ivp->iov_base = (void *)A(buf);
- ivp->iov_len = (__kernel_size_t) len;
- vector++;
- ivp++;
- i--;
- }
- if (tot_len == 0) {
- retval = 0;
- goto out;
- }
-
- inode = file->f_dentry->d_inode;
- /* VERIFY_WRITE actually means a read, as we write to user space */
- retval = locks_verify_area((type == READ
- ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
- inode, file, file->f_pos, tot_len);
- if (retval)
- goto out;
-
- if (type == READ) {
- fn = file->f_op->read;
- fnv = file->f_op->readv;
- } else {
- fn = (io_fn_t)file->f_op->write;
- fnv = file->f_op->writev;
- }
- if (fnv) {
- retval = fnv(file, iov, count, &file->f_pos);
- goto out;
- }
-
- /* Do it by hand, with file-ops */
- ivp = iov;
- while (count > 0) {
- void * base;
- int len, nr;
-
- base = ivp->iov_base;
- len = ivp->iov_len;
- ivp++;
- count--;
-
- nr = fn(file, base, len, &file->f_pos);
-
- if (nr < 0) {
- if (!retval)
- retval = nr;
- break;
- }
- retval += nr;
- if (nr != len)
- break;
- }
-out:
- if (iov != iovstack)
- kfree(iov);
- if ((retval + (type == READ)) > 0)
- dnotify_parent(file->f_dentry,
- (type == READ) ? DN_ACCESS : DN_MODIFY);
-
- return retval;
-}
-
-asmlinkage long sys32_readv(int fd, struct compat_iovec *vector, u32 count)
-{
- struct file *file;
- int ret = -EBADF;
-
- file = fget(fd);
- if (!file || !(file->f_mode & FMODE_READ))
- goto out;
-
- ret = -EINVAL;
- if (!file->f_op || (!file->f_op->readv && !file->f_op->read))
- goto out;
-
- ret = do_readv_writev32(READ, file, vector, count);
-
-out:
- if (file)
- fput(file);
- return ret;
-}
-
-asmlinkage long sys32_writev(int fd, struct compat_iovec *vector, u32 count)
-{
- struct file *file;
- int ret = -EBADF;
-
- file = fget(fd);
- if (!file || !(file->f_mode & FMODE_WRITE))
- goto out;
-
- ret = -EINVAL;
- if (!file->f_op || (!file->f_op->writev && !file->f_op->write))
- goto out;
-
- ret = do_readv_writev32(WRITE, file, vector, count);
-
-out:
- if (file)
- fput(file);
- return ret;
-}
-
/* readdir & getdents */
#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
#define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
===== arch/s390/kernel/compat_linux.c 1.19 vs edited =====
--- 1.19/arch/s390/kernel/compat_linux.c Sat Mar 27 22:46:54 2004
+++ edited/arch/s390/kernel/compat_linux.c Thu Apr 15 17:22:00 2004
@@ -373,144 +373,6 @@
return sys_ftruncate(fd, (high << 32) | low);
}
-typedef ssize_t (*io_fn_t)(struct file *, char *, size_t, loff_t *);
-typedef ssize_t (*iov_fn_t)(struct file *, const struct iovec *, unsigned long, loff_t *);
-
-static long do_readv_writev32(int type, struct file *file,
- const struct compat_iovec *vector, u32 count)
-{
- unsigned long tot_len;
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov=iovstack, *ivp;
- struct inode *inode;
- long retval, i;
- io_fn_t fn;
- iov_fn_t fnv;
-
- /* First get the "struct iovec" from user memory and
- * verify all the pointers
- */
- if (!count)
- return 0;
- if (verify_area(VERIFY_READ, vector, sizeof(struct compat_iovec)*count))
- return -EFAULT;
- if (count > UIO_MAXIOV)
- return -EINVAL;
- if (count > UIO_FASTIOV) {
- iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
- if (!iov)
- return -ENOMEM;
- }
-
- tot_len = 0;
- i = count;
- ivp = iov;
- retval = -EINVAL;
- while(i > 0) {
- compat_ssize_t tmp = tot_len;
- compat_ssize_t len;
- u32 buf;
-
- if (__get_user(len, &vector->iov_len) ||
- __get_user(buf, &vector->iov_base)) {
- retval = -EFAULT;
- goto out;
- }
- if (len < 0) /* size_t not fitting an ssize_t32 .. */
- goto out;
- tot_len += len;
- if (tot_len < tmp) /* maths overflow on the compat_ssize_t */
- goto out;
- ivp->iov_base = (void *)A(buf);
- ivp->iov_len = (__kernel_size_t) len;
- vector++;
- ivp++;
- i--;
- }
- if (tot_len == 0) {
- retval = 0;
- goto out;
- }
-
- inode = file->f_dentry->d_inode;
- /* VERIFY_WRITE actually means a read, as we write to user space */
- retval = locks_verify_area((type == VERIFY_WRITE
- ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
- inode, file, file->f_pos, tot_len);
- if (retval)
- goto out;
-
- /* VERIFY_WRITE actually means a read, as we write to user space */
- fnv = (type == VERIFY_WRITE ? file->f_op->readv : file->f_op->writev);
- if (fnv) {
- retval = fnv(file, iov, count, &file->f_pos);
- goto out;
- }
-
- fn = (type == VERIFY_WRITE ? file->f_op->read :
- (io_fn_t) file->f_op->write);
-
- ivp = iov;
- while (count > 0) {
- void * base;
- int len, nr;
-
- base = ivp->iov_base;
- len = ivp->iov_len;
- ivp++;
- count--;
- nr = fn(file, base, len, &file->f_pos);
- if (nr < 0) {
- if (!retval)
- retval = nr;
- break;
- }
- retval += nr;
- if (nr != len)
- break;
- }
-out:
- if (iov != iovstack)
- kfree(iov);
-
- return retval;
-}
-
-asmlinkage long sys32_readv(int fd, struct compat_iovec *vector, unsigned long count)
-{
- struct file *file;
- long ret = -EBADF;
-
- file = fget(fd);
- if(!file)
- goto bad_file;
-
- if (file->f_op && (file->f_mode & FMODE_READ) &&
- (file->f_op->readv || file->f_op->read))
- ret = do_readv_writev32(VERIFY_WRITE, file, vector, count);
- fput(file);
-
-bad_file:
- return ret;
-}
-
-asmlinkage long sys32_writev(int fd, struct compat_iovec *vector, unsigned long count)
-{
- struct file *file;
- int ret = -EBADF;
-
- file = fget(fd);
- if(!file)
- goto bad_file;
- if (file->f_op && (file->f_mode & FMODE_WRITE) &&
- (file->f_op->writev || file->f_op->write))
- ret = do_readv_writev32(VERIFY_READ, file, vector, count);
- fput(file);
-
-bad_file:
- return ret;
-}
-
/* readdir & getdents */
#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
===== arch/s390/kernel/compat_wrapper.S 1.9 vs edited =====
--- 1.9/arch/s390/kernel/compat_wrapper.S Sat Mar 27 22:43:12 2004
+++ edited/arch/s390/kernel/compat_wrapper.S Thu Apr 15 17:22:00 2004
@@ -663,19 +663,19 @@
lgfr %r4,%r4 # int
jg sys_msync # branch to system call
- .globl sys32_readv_wrapper
-sys32_readv_wrapper:
+ .globl compat_sys_readv_wrapper
+compat_sys_readv_wrapper:
lgfr %r2,%r2 # int
- llgtr %r3,%r3 # const struct iovec_emu31 *
+ llgtr %r3,%r3 # const struct compat_iovec *
llgfr %r4,%r4 # unsigned long
- jg sys32_readv # branch to system call
+ jg compat_sys_readv # branch to system call
- .globl sys32_writev_wrapper
-sys32_writev_wrapper:
+ .globl compat_sys_writev_wrapper
+compat_sys_writev_wrapper:
lgfr %r2,%r2 # int
- llgtr %r3,%r3 # const struct iovec_emu31 *
+ llgtr %r3,%r3 # const struct compat_iovec *
llgfr %r4,%r4 # unsigned long
- jg sys32_writev # branch to system call
+ jg compat_sys_writev # branch to system call
.globl sys32_getsid_wrapper
sys32_getsid_wrapper:
===== arch/s390/kernel/syscalls.S 1.9 vs edited =====
--- 1.9/arch/s390/kernel/syscalls.S Wed Mar 17 13:02:24 2004
+++ edited/arch/s390/kernel/syscalls.S Thu Apr 15 17:22:00 2004
@@ -153,8 +153,8 @@
SYSCALL(sys_select,sys_select,sys32_select_wrapper)
SYSCALL(sys_flock,sys_flock,sys32_flock_wrapper)
SYSCALL(sys_msync,sys_msync,sys32_msync_wrapper)
-SYSCALL(sys_readv,sys_readv,sys32_readv_wrapper) /* 145 */
-SYSCALL(sys_writev,sys_writev,sys32_writev_wrapper)
+SYSCALL(sys_readv,sys_readv,compat_sys_readv_wrapper) /* 145 */
+SYSCALL(sys_writev,sys_writev,compat_sys_writev_wrapper)
SYSCALL(sys_getsid,sys_getsid,sys32_getsid_wrapper)
SYSCALL(sys_fdatasync,sys_fdatasync,sys32_fdatasync_wrapper)
SYSCALL(sys_sysctl,sys_sysctl,sys32_sysctl_wrapper)
===== arch/sparc64/kernel/sys_sparc32.c 1.95 vs edited =====
--- 1.95/arch/sparc64/kernel/sys_sparc32.c Sat Mar 27 22:46:54 2004
+++ edited/arch/sparc64/kernel/sys_sparc32.c Thu Apr 15 17:22:00 2004
@@ -832,182 +832,6 @@
return sys_ftruncate(fd, (high << 32) | low);
}
-typedef ssize_t (*io_fn_t)(struct file *, char *, size_t, loff_t *);
-typedef ssize_t (*iov_fn_t)(struct file *, const struct iovec *, unsigned long, loff_t *);
-
-static long do_readv_writev32(int type, struct file *file,
- const struct compat_iovec *vector, u32 count)
-{
- compat_ssize_t tot_len;
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov=iovstack, *ivp;
- struct inode *inode;
- long retval, i;
- io_fn_t fn;
- iov_fn_t fnv;
-
- /*
- * SuS says "The readv() function *may* fail if the iovcnt argument
- * was less than or equal to 0, or greater than {IOV_MAX}. Linux has
- * traditionally returned zero for zero segments, so...
- */
- retval = 0;
- if (count == 0)
- goto out;
-
- /* First get the "struct iovec" from user memory and
- * verify all the pointers
- */
- retval = -EINVAL;
- if (count > UIO_MAXIOV)
- goto out;
- if (!file->f_op)
- goto out;
- if (count > UIO_FASTIOV) {
- retval = -ENOMEM;
- iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
- if (!iov)
- goto out;
- }
- retval = -EFAULT;
- if (verify_area(VERIFY_READ, vector, sizeof(struct compat_iovec)*count))
- goto out;
-
- /*
- * Single unix specification:
- * We should -EINVAL if an element length is not >= 0 and fitting an
- * ssize_t. The total length is fitting an ssize_t
- *
- * Be careful here because iov_len is a size_t not an ssize_t
- */
- tot_len = 0;
- i = count;
- ivp = iov;
- retval = -EINVAL;
- while(i > 0) {
- compat_ssize_t tmp = tot_len;
- compat_ssize_t len;
- u32 buf;
-
- if (__get_user(len, &vector->iov_len) ||
- __get_user(buf, &vector->iov_base)) {
- retval = -EFAULT;
- goto out;
- }
- if (len < 0) /* size_t not fitting an ssize_t32 .. */
- goto out;
- tot_len += len;
- if (tot_len < tmp) /* maths overflow on the compat_ssize_t */
- goto out;
- ivp->iov_base = (void *)A(buf);
- ivp->iov_len = (__kernel_size_t) len;
- vector++;
- ivp++;
- i--;
- }
- if (tot_len == 0) {
- retval = 0;
- goto out;
- }
-
- inode = file->f_dentry->d_inode;
- /* VERIFY_WRITE actually means a read, as we write to user space */
- retval = locks_verify_area((type == READ
- ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
- inode, file, file->f_pos, tot_len);
- if (retval)
- goto out;
-
- if (type == READ) {
- fn = file->f_op->read;
- fnv = file->f_op->readv;
- } else {
- fn = (io_fn_t)file->f_op->write;
- fnv = file->f_op->writev;
- }
- if (fnv) {
- retval = fnv(file, iov, count, &file->f_pos);
- goto out;
- }
-
- /* Do it by hand, with file-ops */
- ivp = iov;
- while (count > 0) {
- void * base;
- int len, nr;
-
- base = ivp->iov_base;
- len = ivp->iov_len;
- ivp++;
- count--;
-
- nr = fn(file, base, len, &file->f_pos);
-
- if (nr < 0) {
- if (!retval)
- retval = nr;
- break;
- }
- retval += nr;
- if (nr != len)
- break;
- }
-out:
- if (iov != iovstack)
- kfree(iov);
- if ((retval + (type == READ)) > 0)
- dnotify_parent(file->f_dentry,
- (type == READ) ? DN_ACCESS : DN_MODIFY);
-
- return retval;
-}
-
-asmlinkage long sys32_readv(int fd, struct compat_iovec *vector, u32 count)
-{
- struct file *file;
- int ret;
-
- file = fget(fd);
- if(!file)
- return -EBADF;
-
- ret = -EBADF;
- if (!(file->f_mode & FMODE_READ))
- goto out;
- ret = -EINVAL;
- if (!file->f_op || (!file->f_op->readv && !file->f_op->read))
- goto out;
-
- ret = do_readv_writev32(READ, file, vector, count);
-
-out:
- fput(file);
- return ret;
-}
-
-asmlinkage long sys32_writev(int fd, struct compat_iovec *vector, u32 count)
-{
- struct file *file;
- int ret;
-
- file = fget(fd);
- if(!file)
- return -EBADF;
-
- ret = -EBADF;
- if (!(file->f_mode & FMODE_WRITE))
- goto out;
- ret = -EINVAL;
- if (!file->f_op || (!file->f_op->writev && !file->f_op->write))
- goto out;
-
- ret = do_readv_writev32(WRITE, file, vector, count);
-
-out:
- fput(file);
- return ret;
-}
-
/* readdir & getdents */
#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
===== arch/sparc64/kernel/sys_sunos32.c 1.39 vs edited =====
--- 1.39/arch/sparc64/kernel/sys_sunos32.c Fri Mar 26 23:16:26 2004
+++ edited/arch/sparc64/kernel/sys_sunos32.c Thu Apr 15 17:22:00 2004
@@ -1203,9 +1203,6 @@
return ret;
}
-extern asmlinkage int sys32_readv(u32 fd, u32 vector, s32 count);
-extern asmlinkage int sys32_writev(u32 fd, u32 vector, s32 count);
-
asmlinkage int sunos_read(unsigned int fd, u32 buf, u32 count)
{
int ret;
@@ -1218,7 +1215,7 @@
{
int ret;
- ret = check_nonblock(sys32_readv(fd, vector, count), fd);
+ ret = check_nonblock(compat_sys_readv(fd, (void*)A(vector), count), fd);
return ret;
}
@@ -1234,7 +1231,7 @@
{
int ret;
- ret = check_nonblock(sys32_writev(fd, vector, count), fd);
+ ret = check_nonblock(compat_sys_writev(fd, (void*)A(vector), count), fd);
return ret;
}
===== arch/sparc64/kernel/systbls.S 1.52 vs edited =====
--- 1.52/arch/sparc64/kernel/systbls.S Fri Mar 26 20:05:27 2004
+++ edited/arch/sparc64/kernel/systbls.S Thu Apr 15 17:22:00 2004
@@ -43,7 +43,7 @@
.word sys32_rt_sigtimedwait, sys32_rt_sigqueueinfo, sys32_rt_sigsuspend, sys_setresuid, sys_getresuid
/*110*/ .word sys_setresgid, sys_getresgid, sys_setregid, sys_nis_syscall, sys_nis_syscall
.word sys_getgroups, sys32_gettimeofday, compat_sys_getrusage, sys_nis_syscall, sys_getcwd
-/*120*/ .word sys32_readv, sys32_writev, sys32_settimeofday, sys32_fchown16, sys_fchmod
+/*120*/ .word compat_sys_readv, compat_sys_writev, sys32_settimeofday, sys32_fchown16, sys_fchmod
.word sys_nis_syscall, sys32_setreuid16, sys32_setregid16, sys_rename, sys_truncate
/*130*/ .word sys_ftruncate, sys_flock, sys_lstat64, sys_nis_syscall, sys_nis_syscall
.word sys_nis_syscall, sys_mkdir, sys_rmdir, sys32_utimes, sys_stat64
===== arch/x86_64/ia32/ia32entry.S 1.31 vs edited =====
--- 1.31/arch/x86_64/ia32/ia32entry.S Mon Apr 12 19:54:59 2004
+++ edited/arch/x86_64/ia32/ia32entry.S Thu Apr 15 17:22:00 2004
@@ -450,8 +450,8 @@
.quad sys32_select
.quad sys_flock
.quad sys_msync
- .quad sys32_readv /* 145 */
- .quad sys32_writev
+ .quad compat_sys_readv /* 145 */
+ .quad compat_sys_writev
.quad sys_getsid
.quad sys_fdatasync
.quad sys32_sysctl /* sysctl */
===== arch/x86_64/ia32/sys_ia32.c 1.57 vs edited =====
--- 1.57/arch/x86_64/ia32/sys_ia32.c Mon Apr 12 19:54:22 2004
+++ edited/arch/x86_64/ia32/sys_ia32.c Thu Apr 15 17:22:00 2004
@@ -726,104 +726,6 @@
(struct compat_timeval *)A(a.tvp));
}
-static struct iovec *
-get_compat_iovec(struct compat_iovec *iov32, struct iovec *iov_buf, u32 *count, int type, int *errp)
-{
- int i;
- u32 buf, len;
- struct iovec *ivp, *iov;
- unsigned long totlen;
-
- /* Get the "struct iovec" from user memory */
-
- *errp = 0;
- if (!*count)
- return 0;
- *errp = -EINVAL;
- if (*count > UIO_MAXIOV)
- return(struct iovec *)0;
- *errp = -EFAULT;
- if(verify_area(VERIFY_READ, iov32, sizeof(struct compat_iovec)*(*count)))
- return(struct iovec *)0;
- if (*count > UIO_FASTIOV) {
- *errp = -ENOMEM;
- iov = kmalloc(*count*sizeof(struct iovec), GFP_KERNEL);
- if (!iov)
- return((struct iovec *)0);
- } else
- iov = iov_buf;
-
- ivp = iov;
- totlen = 0;
- for (i = 0; i < *count; i++) {
- *errp = __get_user(len, &iov32->iov_len) |
- __get_user(buf, &iov32->iov_base);
- if (*errp)
- goto error;
- *errp = verify_area(type, (void *)A(buf), len);
- if (*errp) {
- if (i > 0) {
- *count = i;
- break;
- }
- goto error;
- }
- /* SuS checks: */
- *errp = -EINVAL;
- if ((int)len < 0)
- goto error;
- if ((totlen += len) >= 0x7fffffff)
- goto error;
- ivp->iov_base = (void *)A(buf);
- ivp->iov_len = (__kernel_size_t)len;
- iov32++;
- ivp++;
- }
- *errp = 0;
- return(iov);
-
-error:
- if (iov != iov_buf)
- kfree(iov);
- return NULL;
-}
-
-asmlinkage long
-sys32_readv(int fd, struct compat_iovec *vector, u32 count)
-{
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- if ((iov = get_compat_iovec(vector, iovstack, &count, VERIFY_WRITE, &ret)) == NULL)
- return ret;
- set_fs(KERNEL_DS);
- ret = sys_readv(fd, iov, count);
- set_fs(old_fs);
- if (iov != iovstack)
- kfree(iov);
- return ret;
-}
-
-asmlinkage long
-sys32_writev(int fd, struct compat_iovec *vector, u32 count)
-{
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- if ((iov = get_compat_iovec(vector, iovstack, &count, VERIFY_READ, &ret)) == NULL)
- return ret;
- set_fs(KERNEL_DS);
- ret = sys_writev(fd, iov, count);
- set_fs(old_fs);
- if (iov != iovstack)
- kfree(iov);
- return ret;
-}
-
/*
* sys_time() can be implemented in user-level using
* sys_gettimeofday(). x86-64 did this but i386 Linux did not
===== fs/compat.c 1.22 vs edited =====
--- 1.22/fs/compat.c Fri Mar 26 20:05:31 2004
+++ edited/fs/compat.c Thu Apr 15 17:22:00 2004
@@ -34,9 +34,17 @@
#include <linux/syscalls.h>
#include <linux/ctype.h>
#include <linux/module.h>
+#include <linux/dnotify.h>
+#include <linux/highuid.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/syscall.h>
+#include <linux/personality.h>
+
#include <net/sock.h> /* siocdevprivate_ioctl */
#include <asm/uaccess.h>
+#include <asm/mmu_context.h>
/*
* Not all architectures have sys_utime, so implement this in terms
@@ -794,3 +802,181 @@
return retval;
}
+static ssize_t compat_do_readv_writev(int type, struct file *file,
+ const struct compat_iovec __user *uvector,
+ unsigned long nr_segs, loff_t *pos)
+{
+ typedef ssize_t (*io_fn_t)(struct file *, char __user *, size_t, loff_t *);
+ typedef ssize_t (*iov_fn_t)(struct file *, const struct iovec *, unsigned long, loff_t *);
+
+ compat_ssize_t tot_len;
+ struct iovec iovstack[UIO_FASTIOV];
+ struct iovec *iov=iovstack, *vector;
+ ssize_t ret;
+ int seg;
+ io_fn_t fn;
+ iov_fn_t fnv;
+ struct inode *inode;
+
+ /*
+ * SuS says "The readv() function *may* fail if the iovcnt argument
+ * was less than or equal to 0, or greater than {IOV_MAX}. Linux has
+ * traditionally returned zero for zero segments, so...
+ */
+ ret = 0;
+ if (nr_segs == 0)
+ goto out;
+
+ /*
+ * First get the "struct iovec" from user memory and
+ * verify all the pointers
+ */
+ ret = -EINVAL;
+ if ((nr_segs > UIO_MAXIOV) || (nr_segs <= 0))
+ goto out;
+ if (!file->f_op)
+ goto out;
+ if (nr_segs > UIO_FASTIOV) {
+ ret = -ENOMEM;
+ iov = kmalloc(nr_segs*sizeof(struct iovec), GFP_KERNEL);
+ if (!iov)
+ goto out;
+ }
+ ret = -EFAULT;
+ if (verify_area(VERIFY_READ, uvector, nr_segs*sizeof(*uvector)))
+ goto out;
+
+ /*
+ * Single unix specification:
+ * We should -EINVAL if an element length is not >= 0 and fitting an
+ * ssize_t. The total length is fitting an ssize_t
+ *
+ * Be careful here because iov_len is a size_t not an ssize_t
+ */
+ tot_len = 0;
+ vector = iov;
+ ret = -EINVAL;
+ for (seg = 0 ; seg < nr_segs; seg++) {
+ compat_ssize_t tmp = tot_len;
+ compat_ssize_t len;
+ compat_uptr_t buf;
+
+ if (__get_user(len, &uvector->iov_len) ||
+ __get_user(buf, &uvector->iov_base)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ if (len < 0) /* size_t not fitting an compat_ssize_t .. */
+ goto out;
+ tot_len += len;
+ if (tot_len < tmp) /* maths overflow on the compat_ssize_t */
+ goto out;
+ vector->iov_base = compat_ptr(buf);
+ vector->iov_len = (compat_size_t) len;
+ uvector++;
+ vector++;
+ }
+ if (tot_len == 0) {
+ ret = 0;
+ goto out;
+ }
+
+ inode = file->f_dentry->d_inode;
+ /* VERIFY_WRITE actually means a read, as we write to user space */
+ ret = locks_verify_area((type == READ
+ ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
+ inode, file, *pos, tot_len);
+ if (ret)
+ goto out;
+
+ fnv = NULL;
+ if (type == READ) {
+ fn = file->f_op->read;
+ fnv = file->f_op->readv;
+ } else {
+ fn = (io_fn_t)file->f_op->write;
+ fnv = file->f_op->writev;
+ }
+ if (fnv) {
+ ret = fnv(file, iov, nr_segs, pos);
+ goto out;
+ }
+
+ /* Do it by hand, with file-ops */
+ ret = 0;
+ vector = iov;
+ while (nr_segs > 0) {
+ void __user * base;
+ size_t len;
+ ssize_t nr;
+
+ base = vector->iov_base;
+ len = vector->iov_len;
+ vector++;
+ nr_segs--;
+
+ nr = fn(file, base, len, pos);
+
+ if (nr < 0) {
+ if (!ret) ret = nr;
+ break;
+ }
+ ret += nr;
+ if (nr != len)
+ break;
+ }
+out:
+ if (iov != iovstack)
+ kfree(iov);
+ if ((ret + (type == READ)) > 0)
+ dnotify_parent(file->f_dentry,
+ (type == READ) ? DN_ACCESS : DN_MODIFY);
+ return ret;
+}
+
+asmlinkage ssize_t
+compat_sys_readv(unsigned long fd, const struct compat_iovec __user *vec, unsigned long vlen)
+{
+ struct file *file;
+ ssize_t ret = -EBADF;
+
+ file = fget(fd);
+ if (!file)
+ return -EBADF;
+
+ if (!(file->f_mode & FMODE_READ))
+ goto out;
+
+ ret = -EINVAL;
+ if (!file->f_op || (!file->f_op->readv && !file->f_op->read))
+ goto out;
+
+ ret = compat_do_readv_writev(READ, file, vec, vlen, &file->f_pos);
+
+out:
+ fput(file);
+ return ret;
+}
+
+asmlinkage ssize_t
+compat_sys_writev(unsigned long fd, const struct compat_iovec __user *vec, unsigned long vlen)
+{
+ struct file *file;
+ ssize_t ret = -EBADF;
+
+ file = fget(fd);
+ if (!file)
+ return -EBADF;
+ if (!(file->f_mode & FMODE_WRITE))
+ goto out;
+
+ ret = -EINVAL;
+ if (!file->f_op || (!file->f_op->writev && !file->f_op->write))
+ goto out;
+
+ ret = compat_do_readv_writev(WRITE, file, vec, vlen, &file->f_pos);
+
+out:
+ fput(file);
+ return ret;
+}
===== include/linux/compat.h 1.20 vs edited =====
--- 1.20/include/linux/compat.h Mon Apr 12 19:54:17 2004
+++ edited/include/linux/compat.h Thu Apr 15 17:22:00 2004
@@ -117,5 +117,11 @@
long compat_sys_shmctl(int first, int second, void __user *uptr);
long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
unsigned nsems, const struct compat_timespec __user *timeout);
+
+asmlinkage ssize_t compat_sys_readv(unsigned long fd,
+ const struct compat_iovec __user *vec, unsigned long vlen);
+asmlinkage ssize_t compat_sys_writev(unsigned long fd,
+ const struct compat_iovec __user *vec, unsigned long vlen);
+
#endif /* CONFIG_COMPAT */
#endif /* _LINUX_COMPAT_H */
^ permalink raw reply [flat|nested] 8+ messages in thread* [PATCH 2/4] Consolidate do_execve32
2004-04-16 16:00 consolidate compat readv/writev/execve/select/nfsservctl [v2] Arnd Bergmann
2004-04-16 16:02 ` [PATCH 1/4] Consolidate sys32_readv and sys32_writev Arnd Bergmann
@ 2004-04-16 16:04 ` Arnd Bergmann
2004-04-16 16:05 ` [PATCH 3/4] Consolidate sys32_select Arnd Bergmann
2004-04-16 16:08 ` [PATCH 4/4] Consolidate sys32_nfsservctl Arnd Bergmann
3 siblings, 0 replies; 8+ messages in thread
From: Arnd Bergmann @ 2004-04-16 16:04 UTC (permalink / raw)
To: linux-kernel
The code for sys32_execve/do_execve32 in most of the seven versions
was copied from fs/exec.c but not kept up-to-date. The new
compat_do_execve() function is based on the mips code and has been
resync'ed with do_execve(). IA64 changes are from Arun Sharma.
Tested on x86_64, ia64 and s390
arch/ia64/ia32/sys_ia32.c | 70 ++---------
arch/mips/kernel/linux32.c | 228 -------------------------------------
arch/parisc/kernel/sys_parisc32.c | 187 ------------------------------
arch/ppc64/kernel/sys_ppc32.c | 187 ------------------------------
arch/s390/kernel/compat_linux.c | 187 ------------------------------
arch/sparc64/kernel/sys_sparc32.c | 195 --------------------------------
arch/x86_64/ia32/sys_ia32.c | 101 ++--------------
fs/compat.c | 231 ++++++++++++++++++++++++++++++++++++++
include/linux/compat.h | 3
9 files changed, 275 insertions(+), 1114 deletions(-)
===== arch/ia64/ia32/sys_ia32.c 1.95 vs edited =====
--- 1.95/arch/ia64/ia32/sys_ia32.c Sat Apr 3 21:51:49 2004
+++ edited/arch/ia64/ia32/sys_ia32.c Thu Apr 15 17:08:18 2004
@@ -90,58 +90,17 @@
/* XXX make per-mm: */
static DECLARE_MUTEX(ia32_mmap_sem);
-static int
-nargs (unsigned int arg, char **ap)
-{
- unsigned int addr;
- int n, err;
-
- if (!arg)
- return 0;
-
- n = 0;
- do {
- err = get_user(addr, (unsigned int *)A(arg));
- if (err)
- return err;
- if (ap)
- *ap++ = (char *) A(addr);
- arg += sizeof(unsigned int);
- n++;
- } while (addr);
- return n - 1;
-}
-
asmlinkage long
-sys32_execve (char *filename, unsigned int argv, unsigned int envp,
- struct pt_regs *regs)
+sys32_execve (char *name, compat_uptr_t __user *argv, compat_uptr_t __user *envp, struct pt_regs *regs)
{
+ long error;
+ char *filename;
unsigned long old_map_base, old_task_size, tssd;
- char **av, **ae;
- int na, ne, len;
- long r;
-
- na = nargs(argv, NULL);
- if (na < 0)
- return na;
- ne = nargs(envp, NULL);
- if (ne < 0)
- return ne;
- len = (na + ne + 2) * sizeof(*av);
- av = kmalloc(len, GFP_KERNEL);
- if (!av)
- return -ENOMEM;
-
- ae = av + na + 1;
- av[na] = NULL;
- ae[ne] = NULL;
-
- r = nargs(argv, av);
- if (r < 0)
- goto out;
- r = nargs(envp, ae);
- if (r < 0)
- goto out;
+
+ filename = getname(name);
+ error = PTR_ERR(filename);
+ if (IS_ERR(filename))
+ return error;
old_map_base = current->thread.map_base;
old_task_size = current->thread.task_size;
@@ -153,19 +112,18 @@
ia64_set_kr(IA64_KR_IO_BASE, current->thread.old_iob);
ia64_set_kr(IA64_KR_TSSD, current->thread.old_k1);
- set_fs(KERNEL_DS);
- r = sys_execve(filename, av, ae, regs);
- if (r < 0) {
+ error = compat_do_execve(filename, argv, envp, regs);
+ putname(filename);
+
+ if (error < 0) {
/* oops, execve failed, switch back to old values... */
ia64_set_kr(IA64_KR_IO_BASE, IA32_IOBASE);
ia64_set_kr(IA64_KR_TSSD, tssd);
current->thread.map_base = old_map_base;
current->thread.task_size = old_task_size;
- set_fs(USER_DS); /* establish new task-size as the address-limit */
}
- out:
- kfree(av);
- return r;
+
+ return error;
}
int cp_compat_stat(struct kstat *stat, struct compat_stat *ubuf)
===== arch/mips/kernel/linux32.c 1.23 vs edited =====
--- 1.23/arch/mips/kernel/linux32.c Sat Apr 3 21:51:49 2004
+++ edited/arch/mips/kernel/linux32.c Thu Apr 15 17:08:12 2004
@@ -142,228 +142,6 @@
}
/*
- * count32() counts the number of arguments/envelopes
- */
-static int count32(u32 * argv, int max)
-{
- int i = 0;
-
- if (argv != NULL) {
- for (;;) {
- u32 p; int error;
-
- error = get_user(p,argv);
- if (error)
- return error;
- if (!p)
- break;
- argv++;
- if (++i > max)
- return -E2BIG;
- }
- }
- return i;
-}
-
-
-/*
- * 'copy_strings32()' copies argument/envelope strings from user
- * memory to free pages in kernel mem. These are in a format ready
- * to be put directly into the top of new user memory.
- */
-int copy_strings32(int argc, u32 * argv, struct linux_binprm *bprm)
-{
- struct page *kmapped_page = NULL;
- char *kaddr = NULL;
- int ret;
-
- while (argc-- > 0) {
- u32 str;
- int len;
- unsigned long pos;
-
- if (get_user(str, argv+argc) || !str ||
- !(len = strnlen_user((char *)A(str), bprm->p))) {
- ret = -EFAULT;
- goto out;
- }
-
- if (bprm->p < len) {
- ret = -E2BIG;
- goto out;
- }
-
- bprm->p -= len;
- /* XXX: add architecture specific overflow check here. */
-
- pos = bprm->p;
- while (len > 0) {
- int i, new, err;
- int offset, bytes_to_copy;
- struct page *page;
-
- offset = pos % PAGE_SIZE;
- i = pos/PAGE_SIZE;
- page = bprm->page[i];
- new = 0;
- if (!page) {
- page = alloc_page(GFP_HIGHUSER);
- bprm->page[i] = page;
- if (!page) {
- ret = -ENOMEM;
- goto out;
- }
- new = 1;
- }
-
- if (page != kmapped_page) {
- if (kmapped_page)
- kunmap(kmapped_page);
- kmapped_page = page;
- kaddr = kmap(kmapped_page);
- }
- if (new && offset)
- memset(kaddr, 0, offset);
- bytes_to_copy = PAGE_SIZE - offset;
- if (bytes_to_copy > len) {
- bytes_to_copy = len;
- if (new)
- memset(kaddr+offset+len, 0,
- PAGE_SIZE-offset-len);
- }
- err = copy_from_user(kaddr + offset, (char *)A(str),
- bytes_to_copy);
- if (err) {
- ret = -EFAULT;
- goto out;
- }
-
- pos += bytes_to_copy;
- str += bytes_to_copy;
- len -= bytes_to_copy;
- }
- }
- ret = 0;
-out:
- if (kmapped_page)
- kunmap(kmapped_page);
- return ret;
-}
-
-#ifdef CONFIG_MMU
-
-#define free_arg_pages(bprm) do { } while (0)
-
-#else
-
-static inline void free_arg_pages(struct linux_binprm *bprm)
-{
- int i;
-
- for (i = 0; i < MAX_ARG_PAGES; i++) {
- if (bprm->page[i])
- __free_page(bprm->page[i]);
- bprm->page[i] = NULL;
- }
-}
-
-#endif /* CONFIG_MMU */
-
-/*
- * sys32_execve() executes a new program.
- */
-static inline int
-do_execve32(char * filename, u32 * argv, u32 * envp, struct pt_regs * regs)
-{
- struct linux_binprm bprm;
- struct file * file;
- int retval;
-
- sched_balance_exec();
-
- file = open_exec(filename);
-
- retval = PTR_ERR(file);
- if (IS_ERR(file))
- return retval;
-
- bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *);
- memset(bprm.page, 0, MAX_ARG_PAGES * sizeof(bprm.page[0]));
-
- bprm.file = file;
- bprm.filename = filename;
- bprm.interp = filename;
- bprm.sh_bang = 0;
- bprm.loader = 0;
- bprm.exec = 0;
- bprm.security = NULL;
- bprm.mm = mm_alloc();
- retval = -ENOMEM;
- if (!bprm.mm)
- goto out_file;
-
- retval = init_new_context(current, bprm.mm);
- if (retval < 0)
- goto out_mm;
-
- bprm.argc = count32(argv, bprm.p / sizeof(u32));
- if ((retval = bprm.argc) < 0)
- goto out_mm;
-
- bprm.envc = count32(envp, bprm.p / sizeof(u32));
- if ((retval = bprm.envc) < 0)
- goto out_mm;
-
- retval = security_bprm_alloc(&bprm);
- if (retval)
- goto out;
-
- retval = prepare_binprm(&bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings_kernel(1, &bprm.filename, &bprm);
- if (retval < 0)
- goto out;
-
- bprm.exec = bprm.p;
- retval = copy_strings32(bprm.envc, envp, &bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings32(bprm.argc, argv, &bprm);
- if (retval < 0)
- goto out;
-
- retval = search_binary_handler(&bprm, regs);
- if (retval >= 0) {
- free_arg_pages(&bprm);
-
- /* execve success */
- security_bprm_free(&bprm);
- return retval;
- }
-
-out:
- /* Something went wrong, return the inode and free the argument pages*/
- free_arg_pages(&bprm);
-
- if (bprm.security)
- security_bprm_free(&bprm);
-
-out_mm:
- if (bprm.mm)
- mmdrop(bprm.mm);
-
-out_file:
- if (bprm.file) {
- allow_write_access(bprm.file);
- fput(bprm.file);
- }
- return retval;
-}
-
-/*
* sys_execve() executes a new program.
*/
asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
@@ -371,12 +149,12 @@
int error;
char * filename;
- filename = getname((char *) (long)regs.regs[4]);
+ filename = getname(compat_ptr(regs.regs[4]));
error = PTR_ERR(filename);
if (IS_ERR(filename))
goto out;
- error = do_execve32(filename, (u32 *) (long)regs.regs[5],
- (u32 *) (long)regs.regs[6], ®s);
+ error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
+ compat_ptr(regs.regs[6]), ®s);
putname(filename);
out:
===== arch/parisc/kernel/sys_parisc32.c 1.26 vs edited =====
--- 1.26/arch/parisc/kernel/sys_parisc32.c Sat Apr 3 21:51:49 2004
+++ edited/arch/parisc/kernel/sys_parisc32.c Thu Apr 15 17:08:12 2004
@@ -65,189 +65,6 @@
#endif
/*
- * count32() counts the number of arguments/envelopes. It is basically
- * a copy of count() from fs/exec.c, except that it works
- * with 32 bit argv and envp pointers.
- */
-
-static int count32(u32 *argv, int max)
-{
- int i = 0;
-
- if (argv != NULL) {
- for (;;) {
- u32 p;
- int error;
-
- error = get_user(p,argv);
- if (error)
- return error;
- if (!p)
- break;
- argv++;
- if(++i > max)
- return -E2BIG;
- }
- }
- return i;
-}
-
-
-/*
- * copy_strings32() is basically a copy of copy_strings() from fs/exec.c
- * except that it works with 32 bit argv and envp pointers.
- */
-
-
-static int copy_strings32(int argc, u32 *argv, struct linux_binprm *bprm)
-{
- while (argc-- > 0) {
- u32 str;
- int len;
- unsigned long pos;
-
- if (get_user(str, argv + argc) ||
- !str ||
- !(len = strnlen_user((char *)compat_ptr(str), bprm->p)))
- return -EFAULT;
-
- if (bprm->p < len)
- return -E2BIG;
-
- bprm->p -= len;
-
- pos = bprm->p;
- while (len > 0) {
- char *kaddr;
- int i, new, err;
- struct page *page;
- int offset, bytes_to_copy;
-
- offset = pos % PAGE_SIZE;
- i = pos/PAGE_SIZE;
- page = bprm->page[i];
- new = 0;
- if (!page) {
- page = alloc_page(GFP_HIGHUSER);
- bprm->page[i] = page;
- if (!page)
- return -ENOMEM;
- new = 1;
- }
- kaddr = (char *)kmap(page);
-
- if (new && offset)
- memset(kaddr, 0, offset);
- bytes_to_copy = PAGE_SIZE - offset;
- if (bytes_to_copy > len) {
- bytes_to_copy = len;
- if (new)
- memset(kaddr+offset+len, 0, PAGE_SIZE-offset-len);
- }
- err = copy_from_user(kaddr + offset, (char *)compat_ptr(str), bytes_to_copy);
- flush_dcache_page(page);
- kunmap(page);
-
- if (err)
- return -EFAULT;
-
- pos += bytes_to_copy;
- str += bytes_to_copy;
- len -= bytes_to_copy;
- }
- }
- return 0;
-}
-
-/*
- * do_execve32() is mostly a copy of do_execve(), with the exception
- * that it processes 32 bit argv and envp pointers.
- */
-
-static inline int
-do_execve32(char * filename, u32 * argv, u32 * envp, struct pt_regs * regs)
-{
- struct linux_binprm bprm;
- struct file *file;
- int retval;
- int i;
-
- file = open_exec(filename);
-
- retval = PTR_ERR(file);
- if (IS_ERR(file))
- return retval;
-
- bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *);
- memset(bprm.page, 0, MAX_ARG_PAGES*sizeof(bprm.page[0]));
-
- DBG(("do_execve32(%s, %p, %p, %p)\n", filename, argv, envp, regs));
-
- bprm.file = file;
- bprm.filename = filename;
- bprm.interp = filename;
- bprm.sh_bang = 0;
- bprm.loader = 0;
- bprm.exec = 0;
-
- bprm.mm = mm_alloc();
- retval = -ENOMEM;
- if (!bprm.mm)
- goto out_file;
-
- retval = init_new_context(current, bprm.mm);
- if (retval < 0)
- goto out_mm;
-
- if ((bprm.argc = count32(argv, bprm.p / sizeof(u32))) < 0)
- goto out_mm;
-
- if ((bprm.envc = count32(envp, bprm.p / sizeof(u32))) < 0)
- goto out_mm;
-
- retval = prepare_binprm(&bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings_kernel(1, &bprm.filename, &bprm);
- if (retval < 0)
- goto out;
-
- bprm.exec = bprm.p;
- retval = copy_strings32(bprm.envc, envp, &bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings32(bprm.argc, argv, &bprm);
- if (retval < 0)
- goto out;
-
- retval = search_binary_handler(&bprm,regs);
- if (retval >= 0)
- /* execve success */
- return retval;
-
-out:
- /* Something went wrong, return the inode and free the argument pages*/
- for (i = 0; i < MAX_ARG_PAGES; i++) {
- struct page *page = bprm.page[i];
- if (page)
- __free_page(page);
- }
-
-out_mm:
- mmdrop(bprm.mm);
-
-out_file:
- if (bprm.file) {
- allow_write_access(bprm.file);
- fput(bprm.file);
- }
-
- return retval;
-}
-
-/*
* sys32_execve() executes a new program.
*/
@@ -261,8 +78,8 @@
error = PTR_ERR(filename);
if (IS_ERR(filename))
goto out;
- error = do_execve32(filename, (u32 *) regs->gr[25],
- (u32 *) regs->gr[24], regs);
+ error = compat_do_execve(filename, compat_ptr(regs->gr[25]),
+ compat_ptr(regs->gr[24]), regs);
if (error == 0)
current->ptrace &= ~PT_DTRACE;
putname(filename);
===== arch/ppc64/kernel/sys_ppc32.c 1.87 vs edited =====
--- 1.87/arch/ppc64/kernel/sys_ppc32.c Sat Apr 3 21:51:49 2004
+++ edited/arch/ppc64/kernel/sys_ppc32.c Thu Apr 15 17:08:12 2004
@@ -1549,191 +1549,6 @@
return ret;
}
-/*
- * count32() counts the number of arguments/envelopes
- */
-static int count32(u32 * argv, int max)
-{
- int i = 0;
-
- if (argv != NULL) {
- for (;;) {
- u32 p; int error;
-
- error = get_user(p,argv);
- if (error)
- return error;
- if (!p)
- break;
- argv++;
- if (++i > max)
- return -E2BIG;
- }
- }
- return i;
-}
-
-/*
- * 'copy_string32()' copies argument/envelope strings from user
- * memory to free pages in kernel mem. These are in a format ready
- * to be put directly into the top of new user memory.
- */
-static int copy_strings32(int argc, u32 * argv, struct linux_binprm *bprm)
-{
- while (argc-- > 0) {
- u32 str;
- int len;
- unsigned long pos;
-
- if (get_user(str, argv + argc) ||
- !str ||
- !(len = strnlen_user((char *)A(str), bprm->p)))
- return -EFAULT;
-
- if (bprm->p < len)
- return -E2BIG;
-
- bprm->p -= len;
-
- pos = bprm->p;
- while (len) {
- char *kaddr;
- struct page *page;
- int offset, bytes_to_copy, new, err;
-
- offset = pos % PAGE_SIZE;
- page = bprm->page[pos / PAGE_SIZE];
- new = 0;
- if (!page) {
- page = alloc_page(GFP_USER);
- bprm->page[pos / PAGE_SIZE] = page;
- if (!page)
- return -ENOMEM;
- new = 1;
- }
- kaddr = (char *)kmap(page);
-
- if (new && offset)
- memset(kaddr, 0, offset);
- bytes_to_copy = PAGE_SIZE - offset;
- if (bytes_to_copy > len) {
- bytes_to_copy = len;
- if (new)
- memset(kaddr+offset+len, 0,
- PAGE_SIZE-offset-len);
- }
-
- err = copy_from_user(kaddr + offset, (char *)A(str),
- bytes_to_copy);
- kunmap((unsigned long)kaddr);
-
- if (err)
- return -EFAULT;
-
- pos += bytes_to_copy;
- str += bytes_to_copy;
- len -= bytes_to_copy;
- }
- }
- return 0;
-}
-
-/*
- * sys32_execve() executes a new program.
- */
-static int do_execve32(char * filename, u32 * argv, u32 * envp, struct pt_regs * regs)
-{
- struct linux_binprm bprm;
- struct file * file;
- int retval;
- int i;
-
- sched_balance_exec();
-
- file = open_exec(filename);
-
- retval = PTR_ERR(file);
- if (IS_ERR(file))
- return retval;
-
- bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *);
- memset(bprm.page, 0, MAX_ARG_PAGES * sizeof(bprm.page[0]));
-
- bprm.file = file;
- bprm.filename = filename;
- bprm.interp = filename;
- bprm.sh_bang = 0;
- bprm.loader = 0;
- bprm.exec = 0;
- bprm.security = NULL;
- bprm.mm = mm_alloc();
- retval = -ENOMEM;
- if (!bprm.mm)
- goto out_file;
-
- retval = init_new_context(current, bprm.mm);
- if (retval < 0)
- goto out_mm;
-
- bprm.argc = count32(argv, bprm.p / sizeof(u32));
- if ((retval = bprm.argc) < 0)
- goto out_mm;
-
- bprm.envc = count32(envp, bprm.p / sizeof(u32));
- if ((retval = bprm.envc) < 0)
- goto out_mm;
-
- retval = security_bprm_alloc(&bprm);
- if (retval)
- goto out;
-
- retval = prepare_binprm(&bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings_kernel(1, &bprm.filename, &bprm);
- if (retval < 0)
- goto out;
-
- bprm.exec = bprm.p;
- retval = copy_strings32(bprm.envc, envp, &bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings32(bprm.argc, argv, &bprm);
- if (retval < 0)
- goto out;
-
- retval = search_binary_handler(&bprm,regs);
- if (retval >= 0) {
- /* execve success */
- security_bprm_free(&bprm);
- return retval;
- }
-
-out:
- /* Something went wrong, return the inode and free the argument pages*/
- for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
- struct page * page = bprm.page[i];
- if (page)
- __free_page(page);
- }
-
- if (bprm.security)
- security_bprm_free(&bprm);
-
-out_mm:
- if (bprm.mm)
- mmdrop(bprm.mm);
-
-out_file:
- if (bprm.file) {
- allow_write_access(bprm.file);
- fput(bprm.file);
- }
- return retval;
-}
-
long sys32_execve(unsigned long a0, unsigned long a1, unsigned long a2,
unsigned long a3, unsigned long a4, unsigned long a5,
struct pt_regs *regs)
@@ -1752,7 +1567,7 @@
giveup_altivec(current);
#endif /* CONFIG_ALTIVEC */
- error = do_execve32(filename, (u32*) a1, (u32*) a2, regs);
+ error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
if (error == 0)
current->ptrace &= ~PT_DTRACE;
===== arch/s390/kernel/compat_linux.c 1.20 vs edited =====
--- 1.20/arch/s390/kernel/compat_linux.c Sat Apr 3 21:51:49 2004
+++ edited/arch/s390/kernel/compat_linux.c Thu Apr 15 17:08:12 2004
@@ -906,188 +906,6 @@
return ret;
}
-extern void check_pending(int signum);
-
-/*
- * count32() counts the number of arguments/envelopes
- */
-static int count32(u32 * argv)
-{
- int i = 0;
-
- if (argv != NULL) {
- for (;;) {
- u32 p; int error;
-
- error = get_user(p,argv);
- if (error) return error;
- if (!p) break;
- argv++; i++;
- }
- }
- return i;
-}
-
-/*
- * 'copy_string32()' copies argument/envelope strings from user
- * memory to free pages in kernel mem. These are in a format ready
- * to be put directly into the top of new user memory.
- */
-static int copy_strings32(int argc, u32 * argv, struct linux_binprm *bprm)
-{
- while (argc-- > 0) {
- u32 str;
- int len;
- unsigned long pos;
-
- if (get_user(str, argv + argc) ||
- !str ||
- !(len = strnlen_user((char *)A(str), bprm->p)))
- return -EFAULT;
-
- if (bprm->p < len)
- return -E2BIG;
-
- bprm->p -= len;
-
- pos = bprm->p;
- while (len) {
- char *kaddr;
- struct page *page;
- int offset, bytes_to_copy, new, err;
-
- offset = pos % PAGE_SIZE;
- page = bprm->page[pos / PAGE_SIZE];
- new = 0;
- if (!page) {
- page = alloc_page(GFP_USER);
- bprm->page[pos / PAGE_SIZE] = page;
- if (!page)
- return -ENOMEM;
- new = 1;
- }
- kaddr = (char *)kmap(page);
-
- if (new && offset)
- memset(kaddr, 0, offset);
- bytes_to_copy = PAGE_SIZE - offset;
- if (bytes_to_copy > len) {
- bytes_to_copy = len;
- if (new)
- memset(kaddr+offset+len, 0,
- PAGE_SIZE-offset-len);
- }
-
- err = copy_from_user(kaddr + offset, (char *)A(str),
- bytes_to_copy);
- kunmap(page);
-
- if (err)
- return -EFAULT;
-
- pos += bytes_to_copy;
- str += bytes_to_copy;
- len -= bytes_to_copy;
- }
- }
- return 0;
-}
-
-/*
- * sys32_execve() executes a new program.
- */
-static inline int
-do_execve32(char * filename, u32 * argv, u32 * envp, struct pt_regs * regs)
-{
- struct linux_binprm bprm;
- struct file * file;
- int retval;
- int i;
-
- sched_balance_exec();
-
- file = open_exec(filename);
-
- retval = PTR_ERR(file);
- if (IS_ERR(file))
- return retval;
-
- bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *);
- memset(bprm.page, 0, MAX_ARG_PAGES * sizeof(bprm.page[0]));
-
- bprm.file = file;
- bprm.filename = filename;
- bprm.interp = filename;
- bprm.sh_bang = 0;
- bprm.loader = 0;
- bprm.exec = 0;
- bprm.mm = mm_alloc();
- retval = -ENOMEM;
- if (!bprm.mm)
- goto out_file;
-
- /* init_new_context is empty for s390x. */
-
- bprm.argc = count32(argv);
- if ((retval = bprm.argc) < 0)
- goto out_mm;
-
- bprm.envc = count32(envp);
- if ((retval = bprm.envc) < 0)
- goto out_mm;
-
- retval = security_bprm_alloc(&bprm);
- if (retval)
- goto out;
-
- retval = prepare_binprm(&bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings_kernel(1, &bprm.filename, &bprm);
- if (retval < 0)
- goto out;
-
- bprm.exec = bprm.p;
- retval = copy_strings32(bprm.envc, envp, &bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings32(bprm.argc, argv, &bprm);
- if (retval < 0)
- goto out;
-
- retval = search_binary_handler(&bprm, regs);
- if (retval >= 0) {
- /* execve success */
- security_bprm_free(&bprm);
- return retval;
- }
-
-out:
- /* Something went wrong, return the inode and free the argument pages*/
- for (i=0 ; i<MAX_ARG_PAGES ; i++) {
- struct page * page = bprm.page[i];
- if (page)
- __free_page(page);
- }
-
- if (bprm.security)
- security_bprm_free(&bprm);
-
-out_mm:
- if (bprm.mm)
- mmdrop(bprm.mm);
-
-out_file:
- if (bprm.file) {
- allow_write_access(bprm.file);
- fput(bprm.file);
- }
-
- return retval;
-}
-
/*
* sys32_execve() executes a new program after the asm stub has set
* things up for us. This should basically do what I want it to.
@@ -1098,11 +916,12 @@
int error;
char * filename;
- filename = getname((char *)A(regs.orig_gpr2));
+ filename = getname(compat_ptr(regs.orig_gpr2));
error = PTR_ERR(filename);
if (IS_ERR(filename))
goto out;
- error = do_execve32(filename, (u32 *)A(regs.gprs[3]), (u32 *)A(regs.gprs[4]), ®s);
+ error = compat_do_execve(filename, compat_ptr(regs.gprs[3]),
+ compat_ptr(regs.gprs[4]), ®s);
if (error == 0)
{
current->ptrace &= ~PT_DTRACE;
===== arch/sparc64/kernel/sys_sparc32.c 1.96 vs edited =====
--- 1.96/arch/sparc64/kernel/sys_sparc32.c Sat Apr 3 21:51:49 2004
+++ edited/arch/sparc64/kernel/sys_sparc32.c Thu Apr 15 17:08:12 2004
@@ -1386,8 +1386,6 @@
return ret;
}
-extern void check_pending(int signum);
-
asmlinkage int sys32_sigaction (int sig, struct old_sigaction32 *act, struct old_sigaction32 *oact)
{
struct k_sigaction new_ka, old_ka;
@@ -1483,193 +1481,6 @@
return ret;
}
-
-/*
- * count32() counts the number of arguments/envelopes
- */
-static int count32(u32 * argv, int max)
-{
- int i = 0;
-
- if (argv != NULL) {
- for (;;) {
- u32 p; int error;
-
- error = get_user(p,argv);
- if (error)
- return error;
- if (!p)
- break;
- argv++;
- if (++i > max)
- return -E2BIG;
- }
- }
- return i;
-}
-
-/*
- * 'copy_string32()' copies argument/envelope strings from user
- * memory to free pages in kernel mem. These are in a format ready
- * to be put directly into the top of new user memory.
- */
-static int copy_strings32(int argc, u32 * argv, struct linux_binprm *bprm)
-{
- while (argc-- > 0) {
- u32 str;
- int len;
- unsigned long pos;
-
- if (get_user(str, argv + argc) ||
- !str ||
- !(len = strnlen_user((char *)A(str), bprm->p)))
- return -EFAULT;
-
- if (bprm->p < len)
- return -E2BIG;
-
- bprm->p -= len;
-
- pos = bprm->p;
- while (len) {
- char *kaddr;
- struct page *page;
- int offset, bytes_to_copy, new, err;
-
- offset = pos % PAGE_SIZE;
- page = bprm->page[pos / PAGE_SIZE];
- new = 0;
- if (!page) {
- page = alloc_page(GFP_USER);
- bprm->page[pos / PAGE_SIZE] = page;
- if (!page)
- return -ENOMEM;
- new = 1;
- }
- kaddr = kmap(page);
-
- if (new && offset)
- memset(kaddr, 0, offset);
- bytes_to_copy = PAGE_SIZE - offset;
- if (bytes_to_copy > len) {
- bytes_to_copy = len;
- if (new)
- memset(kaddr+offset+len, 0,
- PAGE_SIZE-offset-len);
- }
-
- err = copy_from_user(kaddr + offset, (char *)A(str),
- bytes_to_copy);
- kunmap(page);
-
- if (err)
- return -EFAULT;
-
- pos += bytes_to_copy;
- str += bytes_to_copy;
- len -= bytes_to_copy;
- }
- }
- return 0;
-}
-
-/*
- * sys32_execve() executes a new program.
- */
-static inline int
-do_execve32(char * filename, u32 * argv, u32 * envp, struct pt_regs * regs)
-{
- struct linux_binprm bprm;
- struct file * file;
- int retval;
- int i;
-
- sched_balance_exec();
-
- file = open_exec(filename);
-
- retval = PTR_ERR(file);
- if (IS_ERR(file))
- return retval;
-
- bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *);
- memset(bprm.page, 0, MAX_ARG_PAGES * sizeof(bprm.page[0]));
-
- bprm.file = file;
- bprm.filename = filename;
- bprm.interp = filename;
- bprm.sh_bang = 0;
- bprm.loader = 0;
- bprm.exec = 0;
- bprm.security = NULL;
- bprm.mm = mm_alloc();
- retval = -ENOMEM;
- if (!bprm.mm)
- goto out_file;
-
- retval = init_new_context(current, bprm.mm);
- if (retval < 0)
- goto out_mm;
-
- bprm.argc = count32(argv, bprm.p / sizeof(u32));
- if ((retval = bprm.argc) < 0)
- goto out_mm;
-
- bprm.envc = count32(envp, bprm.p / sizeof(u32));
- if ((retval = bprm.envc) < 0)
- goto out_mm;
-
- retval = security_bprm_alloc(&bprm);
- if (retval)
- goto out;
-
- retval = prepare_binprm(&bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings_kernel(1, &bprm.filename, &bprm);
- if (retval < 0)
- goto out;
-
- bprm.exec = bprm.p;
- retval = copy_strings32(bprm.envc, envp, &bprm);
- if (retval < 0)
- goto out;
-
- retval = copy_strings32(bprm.argc, argv, &bprm);
- if (retval < 0)
- goto out;
-
- retval = search_binary_handler(&bprm, regs);
- if (retval >= 0) {
- /* execve success */
- security_bprm_free(&bprm);
- return retval;
- }
-
-out:
- /* Something went wrong, return the inode and free the argument pages*/
- for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
- struct page * page = bprm.page[i];
- if (page)
- __free_page(page);
- }
-
- if (bprm.security)
- security_bprm_free(&bprm);
-
-out_mm:
- if (bprm.mm)
- mmdrop(bprm.mm);
-
-out_file:
- if (bprm.file) {
- allow_write_access(bprm.file);
- fput(bprm.file);
- }
- return retval;
-}
-
/*
* sparc32_execve() executes a new program after the asm stub has set
* things up for us. This should basically do what I want it to.
@@ -1689,9 +1500,9 @@
error = PTR_ERR(filename);
if(IS_ERR(filename))
goto out;
- error = do_execve32(filename,
- (u32 *)AA((u32)regs->u_regs[base + UREG_I1]),
- (u32 *)AA((u32)regs->u_regs[base + UREG_I2]), regs);
+ error = compat_do_execve(filename,
+ compat_ptr((u32)regs->u_regs[base + UREG_I1]),
+ compat_ptr((u32)regs->u_regs[base + UREG_I2]), regs);
putname(filename);
if(!error) {
===== arch/x86_64/ia32/sys_ia32.c 1.58 vs edited =====
--- 1.58/arch/x86_64/ia32/sys_ia32.c Sat Apr 3 21:51:49 2004
+++ edited/arch/x86_64/ia32/sys_ia32.c Thu Apr 15 17:08:12 2004
@@ -1225,93 +1225,22 @@
return ret;
}
-static int nargs(u32 src, char **dst)
-{
- int cnt;
- u32 val;
-
- cnt = 0;
- do {
- int ret = get_user(val, (__u32 *)(u64)src);
- if (ret)
- return ret;
- if (dst)
- dst[cnt] = (char *)(u64)val;
- cnt++;
- src += 4;
- if (cnt >= (MAX_ARG_PAGES*PAGE_SIZE)/sizeof(void*))
- return -E2BIG;
- } while(val);
- if (dst)
- dst[cnt-1] = 0;
- return cnt;
-}
-
-asmlinkage long sys32_execve(char *name, u32 argv, u32 envp, struct pt_regs regs)
-{
- mm_segment_t oldseg;
- char **buf = NULL;
- int na = 0,ne = 0;
- int ret;
- unsigned sz = 0;
-
- if (argv) {
- na = nargs(argv, NULL);
- if (na < 0)
- return -EFAULT;
- }
- if (envp) {
- ne = nargs(envp, NULL);
- if (ne < 0)
- return -EFAULT;
- }
-
- if (argv || envp) {
- sz = (na+ne)*sizeof(void *);
- if (sz > PAGE_SIZE)
- buf = vmalloc(sz);
- else
- buf = kmalloc(sz, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
- }
-
- if (argv) {
- ret = nargs(argv, buf);
- if (ret < 0)
- goto free;
- }
-
- if (envp) {
- ret = nargs(envp, buf + na);
- if (ret < 0)
- goto free;
- }
-
- name = getname(name);
- ret = PTR_ERR(name);
- if (IS_ERR(name))
- goto free;
-
- oldseg = get_fs();
- set_fs(KERNEL_DS);
- ret = do_execve(name, argv ? buf : NULL, envp ? buf+na : NULL, ®s);
- set_fs(oldseg);
-
- if (ret == 0)
+asmlinkage long sys32_execve(char *name, compat_uptr_t __user *argv,
+ compat_uptr_t __user *envp, struct pt_regs regs)
+{
+ long error;
+ char * filename;
+
+ filename = getname(name);
+ error = PTR_ERR(filename);
+ if (IS_ERR(filename))
+ return error;
+ error = compat_do_execve(filename, argv, envp, ®s);
+ if (error == 0)
current->ptrace &= ~PT_DTRACE;
-
- putname(name);
-
-free:
- if (argv || envp) {
- if (sz > PAGE_SIZE)
- vfree(buf);
- else
- kfree(buf);
- }
- return ret;
-}
+ putname(filename);
+ return error;
+}
asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp, struct pt_regs regs)
{
===== fs/compat.c 1.23 vs edited =====
--- 1.23/fs/compat.c Sat Apr 3 21:51:49 2004
+++ edited/fs/compat.c Thu Apr 15 17:09:08 2004
@@ -980,3 +980,234 @@
fput(file);
return ret;
}
+
+/*
+ * compat_count() counts the number of arguments/envelopes. It is basically
+ * a copy of count() from fs/exec.c, except that it works with 32 bit argv
+ * and envp pointers.
+ */
+static int compat_count(compat_uptr_t *argv, int max)
+{
+ int i = 0;
+
+ if (argv != NULL) {
+ for (;;) {
+ compat_uptr_t p;
+
+ if (get_user(p, argv))
+ return -EFAULT;
+ if (!p)
+ break;
+ argv++;
+ if(++i > max)
+ return -E2BIG;
+ }
+ }
+ return i;
+}
+
+/*
+ * compat_copy_strings() is basically a copy of copy_strings() from fs/exec.c
+ * except that it works with 32 bit argv and envp pointers.
+ */
+static int compat_copy_strings(int argc, compat_uptr_t __user *argv,
+ struct linux_binprm *bprm)
+{
+ struct page *kmapped_page = NULL;
+ char *kaddr = NULL;
+ int ret;
+
+ while (argc-- > 0) {
+ compat_uptr_t str;
+ int len;
+ unsigned long pos;
+
+ if (get_user(str, argv+argc) ||
+ !(len = strnlen_user(compat_ptr(str), bprm->p))) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ if (bprm->p < len) {
+ ret = -E2BIG;
+ goto out;
+ }
+
+ bprm->p -= len;
+ /* XXX: add architecture specific overflow check here. */
+ pos = bprm->p;
+
+ while (len > 0) {
+ int i, new, err;
+ int offset, bytes_to_copy;
+ struct page *page;
+
+ offset = pos % PAGE_SIZE;
+ i = pos/PAGE_SIZE;
+ page = bprm->page[i];
+ new = 0;
+ if (!page) {
+ page = alloc_page(GFP_HIGHUSER);
+ bprm->page[i] = page;
+ if (!page) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ new = 1;
+ }
+
+ if (page != kmapped_page) {
+ if (kmapped_page)
+ kunmap(kmapped_page);
+ kmapped_page = page;
+ kaddr = kmap(kmapped_page);
+ }
+ if (new && offset)
+ memset(kaddr, 0, offset);
+ bytes_to_copy = PAGE_SIZE - offset;
+ if (bytes_to_copy > len) {
+ bytes_to_copy = len;
+ if (new)
+ memset(kaddr+offset+len, 0,
+ PAGE_SIZE-offset-len);
+ }
+ err = copy_from_user(kaddr+offset, compat_ptr(str),
+ bytes_to_copy);
+ if (err) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ pos += bytes_to_copy;
+ str += bytes_to_copy;
+ len -= bytes_to_copy;
+ }
+ }
+ ret = 0;
+out:
+ if (kmapped_page)
+ kunmap(kmapped_page);
+ return ret;
+}
+
+#ifdef CONFIG_MMU
+
+#define free_arg_pages(bprm) do { } while (0)
+
+#else
+
+static inline void free_arg_pages(struct linux_binprm *bprm)
+{
+ int i;
+
+ for (i = 0; i < MAX_ARG_PAGES; i++) {
+ if (bprm->page[i])
+ __free_page(bprm->page[i]);
+ bprm->page[i] = NULL;
+ }
+}
+
+#endif /* CONFIG_MMU */
+
+/*
+ * compat_do_execve() is mostly a copy of do_execve(), with the exception
+ * that it processes 32 bit argv and envp pointers.
+ */
+int compat_do_execve(char * filename,
+ compat_uptr_t __user *argv,
+ compat_uptr_t __user *envp,
+ struct pt_regs * regs)
+{
+ struct linux_binprm bprm;
+ struct file *file;
+ int retval;
+ int i;
+
+ sched_balance_exec();
+
+ file = open_exec(filename);
+
+ retval = PTR_ERR(file);
+ if (IS_ERR(file))
+ return retval;
+
+ bprm.p = PAGE_SIZE*MAX_ARG_PAGES-sizeof(void *);
+ memset(bprm.page, 0, MAX_ARG_PAGES*sizeof(bprm.page[0]));
+
+ bprm.file = file;
+ bprm.filename = filename;
+ bprm.interp = filename;
+ bprm.sh_bang = 0;
+ bprm.loader = 0;
+ bprm.exec = 0;
+ bprm.security = NULL;
+ bprm.mm = mm_alloc();
+ retval = -ENOMEM;
+ if (!bprm.mm)
+ goto out_file;
+
+ retval = init_new_context(current, bprm.mm);
+ if (retval < 0)
+ goto out_mm;
+
+ bprm.argc = compat_count(argv, bprm.p / sizeof(compat_uptr_t));
+ if ((retval = bprm.argc) < 0)
+ goto out_mm;
+
+ bprm.envc = compat_count(envp, bprm.p / sizeof(compat_uptr_t));
+ if ((retval = bprm.envc) < 0)
+ goto out_mm;
+
+ retval = security_bprm_alloc(&bprm);
+ if (retval)
+ goto out;
+
+ retval = prepare_binprm(&bprm);
+ if (retval < 0)
+ goto out;
+
+ retval = copy_strings_kernel(1, &bprm.filename, &bprm);
+ if (retval < 0)
+ goto out;
+
+ bprm.exec = bprm.p;
+ retval = compat_copy_strings(bprm.envc, envp, &bprm);
+ if (retval < 0)
+ goto out;
+
+ retval = compat_copy_strings(bprm.argc, argv, &bprm);
+ if (retval < 0)
+ goto out;
+
+ retval = search_binary_handler(&bprm,regs);
+ if (retval >= 0) {
+ free_arg_pages(&bprm);
+
+ /* execve success */
+ security_bprm_free(&bprm);
+ return retval;
+ }
+
+out:
+ /* Something went wrong, return the inode and free the argument pages*/
+ for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
+ struct page * page = bprm.page[i];
+ if (page)
+ __free_page(page);
+ }
+
+ if (bprm.security)
+ security_bprm_free(&bprm);
+
+out_mm:
+ if (bprm.mm)
+ mmdrop(bprm.mm);
+
+out_file:
+ if (bprm.file) {
+ allow_write_access(bprm.file);
+ fput(bprm.file);
+ }
+
+ return retval;
+}
===== include/linux/compat.h 1.21 vs edited =====
--- 1.21/include/linux/compat.h Sat Apr 3 22:03:56 2004
+++ edited/include/linux/compat.h Thu Apr 15 17:08:12 2004
@@ -123,5 +123,8 @@
asmlinkage ssize_t compat_sys_writev(unsigned long fd,
const struct compat_iovec __user *vec, unsigned long vlen);
+int compat_do_execve(char * filename, compat_uptr_t __user *argv,
+ compat_uptr_t __user *envp, struct pt_regs * regs);
+
#endif /* CONFIG_COMPAT */
#endif /* _LINUX_COMPAT_H */
^ permalink raw reply [flat|nested] 8+ messages in thread* [PATCH 3/4] Consolidate sys32_select
2004-04-16 16:00 consolidate compat readv/writev/execve/select/nfsservctl [v2] Arnd Bergmann
2004-04-16 16:02 ` [PATCH 1/4] Consolidate sys32_readv and sys32_writev Arnd Bergmann
2004-04-16 16:04 ` [PATCH 2/4] Consolidate do_execve32 Arnd Bergmann
@ 2004-04-16 16:05 ` Arnd Bergmann
2004-05-25 22:02 ` Martin Josefsson
2004-04-16 16:08 ` [PATCH 4/4] Consolidate sys32_nfsservctl Arnd Bergmann
3 siblings, 1 reply; 8+ messages in thread
From: Arnd Bergmann @ 2004-04-16 16:05 UTC (permalink / raw)
To: linux-kernel
sys32_select has seven mostly but not exactly identical versions,
so consolidate them as compat_sys_select. Based on the ppc64
implementation, which most closely resembles sys_select.
One bug that was not caught by LTP has been fixed since the
first version of this patch.
tested x86_64, ia64 and s390.
arch/ia64/ia32/ia32_entry.S | 2
arch/ia64/ia32/sys_ia32.c | 108 ---------------------
arch/mips/kernel/linux32.c | 161 -------------------------------
arch/mips/kernel/scall64-n32.S | 2
arch/mips/kernel/scall64-o32.S | 2
arch/parisc/kernel/sys_parisc32.c | 121 -----------------------
arch/parisc/kernel/syscall_table.S | 2
arch/ppc64/kernel/sys_ppc32.c | 163 --------------------------------
arch/s390/kernel/compat_linux.c | 154 ------------------------------
arch/s390/kernel/compat_wrapper.S | 14 +-
arch/s390/kernel/syscalls.S | 2
arch/sparc64/kernel/sys_sparc32.c | 152 -----------------------------
arch/sparc64/kernel/sys_sunos32.c | 9 -
arch/sparc64/kernel/systbls.S | 4
arch/x86_64/ia32/ia32entry.S | 2
arch/x86_64/ia32/sys_ia32.c | 105 --------------------
fs/compat.c | 188 +++++++++++++++++++++++++++++++++++++
include/linux/compat.h | 4
18 files changed, 218 insertions(+), 977 deletions(-)
===== arch/ia64/ia32/ia32_entry.S 1.36 vs edited =====
--- 1.36/arch/ia64/ia32/ia32_entry.S Thu Apr 15 17:25:08 2004
+++ edited/arch/ia64/ia32/ia32_entry.S Thu Apr 15 17:30:49 2004
@@ -350,7 +350,7 @@
data8 sys_setfsgid /* 16-bit version */
data8 sys_llseek /* 140 */
data8 sys32_getdents
- data8 sys32_select
+ data8 compat_sys_select
data8 sys_flock
data8 sys32_msync
data8 compat_sys_readv /* 145 */
===== arch/ia64/ia32/sys_ia32.c 1.95 vs edited =====
--- 1.95/arch/ia64/ia32/sys_ia32.c Thu Apr 15 17:25:08 2004
+++ edited/arch/ia64/ia32/sys_ia32.c Thu Apr 15 17:30:49 2004
@@ -776,110 +776,6 @@
return error;
}
-/*
- * We can actually return ERESTARTSYS instead of EINTR, but I'd
- * like to be certain this leads to no problems. So I return
- * EINTR just for safety.
- *
- * Update: ERESTARTSYS breaks at least the xview clock binary, so
- * I'm trying ERESTARTNOHAND which restart only when you want to.
- */
-#define MAX_SELECT_SECONDS \
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-#define ROUND_UP_TIME(x,y) (((x)+(y)-1)/(y))
-
-asmlinkage long
-sys32_select (int n, fd_set *inp, fd_set *outp, fd_set *exp, struct compat_timeval *tvp32)
-{
- fd_set_bits fds;
- char *bits;
- long timeout;
- int ret, size;
-
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (tvp32) {
- time_t sec, usec;
-
- ret = -EFAULT;
- if (get_user(sec, &tvp32->tv_sec) || get_user(usec, &tvp32->tv_usec))
- goto out_nofds;
-
- ret = -EINVAL;
- if (sec < 0 || usec < 0)
- goto out_nofds;
-
- if ((unsigned long) sec < MAX_SELECT_SECONDS) {
- timeout = ROUND_UP_TIME(usec, 1000000/HZ);
- timeout += sec * (unsigned long) HZ;
- }
- }
-
- ret = -EINVAL;
- if (n < 0)
- goto out_nofds;
-
- if (n > current->files->max_fdset)
- n = current->files->max_fdset;
-
- /*
- * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
- * since we used fdset we need to allocate memory in units of
- * long-words.
- */
- ret = -ENOMEM;
- size = FDS_BYTES(n);
- bits = kmalloc(6 * size, GFP_KERNEL);
- if (!bits)
- goto out_nofds;
- fds.in = (unsigned long *) bits;
- fds.out = (unsigned long *) (bits + size);
- fds.ex = (unsigned long *) (bits + 2*size);
- fds.res_in = (unsigned long *) (bits + 3*size);
- fds.res_out = (unsigned long *) (bits + 4*size);
- fds.res_ex = (unsigned long *) (bits + 5*size);
-
- if ((ret = get_fd_set(n, inp, fds.in)) ||
- (ret = get_fd_set(n, outp, fds.out)) ||
- (ret = get_fd_set(n, exp, fds.ex)))
- goto out;
- zero_fd_set(n, fds.res_in);
- zero_fd_set(n, fds.res_out);
- zero_fd_set(n, fds.res_ex);
-
- ret = do_select(n, &fds, &timeout);
-
- if (tvp32 && !(current->personality & STICKY_TIMEOUTS)) {
- time_t sec = 0, usec = 0;
- if (timeout) {
- sec = timeout / HZ;
- usec = timeout % HZ;
- usec *= (1000000/HZ);
- }
- if (put_user(sec, &tvp32->tv_sec) || put_user(usec, &tvp32->tv_usec)) {
- ret = -EFAULT;
- goto out;
- }
- }
-
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
-
- set_fd_set(n, inp, fds.res_in);
- set_fd_set(n, outp, fds.res_out);
- set_fd_set(n, exp, fds.res_ex);
-
-out:
- kfree(bits);
-out_nofds:
- return ret;
-}
-
struct sel_arg_struct {
unsigned int n;
unsigned int inp;
@@ -895,8 +791,8 @@
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
- return sys32_select(a.n, (fd_set *) A(a.inp), (fd_set *) A(a.outp), (fd_set *) A(a.exp),
- (struct compat_timeval *) A(a.tvp));
+ return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
+ compat_ptr(a.exp), compat_ptr(a.tvp));
}
#define SEMOP 1
===== arch/mips/kernel/linux32.c 1.23 vs edited =====
--- 1.23/arch/mips/kernel/linux32.c Thu Apr 15 17:25:08 2004
+++ edited/arch/mips/kernel/linux32.c Thu Apr 15 17:30:49 2004
@@ -519,167 +519,6 @@
bad_file:
return ret;
}
-/*
- * Ooo, nasty. We need here to frob 32-bit unsigned longs to
- * 64-bit unsigned longs.
- */
-
-static inline int
-get_fd_set32(unsigned long n, unsigned long *fdset, u32 *ufdset)
-{
- if (ufdset) {
- unsigned long odd;
-
- if (verify_area(VERIFY_WRITE, ufdset, n*sizeof(u32)))
- return -EFAULT;
-
- odd = n & 1UL;
- n &= ~1UL;
- while (n) {
- unsigned long h, l;
- __get_user(l, ufdset);
- __get_user(h, ufdset+1);
- ufdset += 2;
- *fdset++ = h << 32 | l;
- n -= 2;
- }
- if (odd)
- __get_user(*fdset, ufdset);
- } else {
- /* Tricky, must clear full unsigned long in the
- * kernel fdset at the end, this makes sure that
- * actually happens.
- */
- memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
- }
- return 0;
-}
-
-static inline void
-set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
-{
- unsigned long odd;
-
- if (!ufdset)
- return;
-
- odd = n & 1UL;
- n &= ~1UL;
- while (n) {
- unsigned long h, l;
- l = *fdset++;
- h = l >> 32;
- __put_user(l, ufdset);
- __put_user(h, ufdset+1);
- ufdset += 2;
- n -= 2;
- }
- if (odd)
- __put_user(*fdset, ufdset);
-}
-
-/*
- * We can actually return ERESTARTSYS instead of EINTR, but I'd
- * like to be certain this leads to no problems. So I return
- * EINTR just for safety.
- *
- * Update: ERESTARTSYS breaks at least the xview clock binary, so
- * I'm trying ERESTARTNOHAND which restart only when you want to.
- */
-#define MAX_SELECT_SECONDS \
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-
-asmlinkage int sys32_select(int n, u32 *inp, u32 *outp, u32 *exp, struct compat_timeval *tvp)
-{
- fd_set_bits fds;
- char *bits;
- unsigned long nn;
- long timeout;
- int ret, size;
-
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (tvp) {
- time_t sec, usec;
-
- if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
- || (ret = __get_user(sec, &tvp->tv_sec))
- || (ret = __get_user(usec, &tvp->tv_usec)))
- goto out_nofds;
-
- ret = -EINVAL;
- if(sec < 0 || usec < 0)
- goto out_nofds;
-
- if ((unsigned long) sec < MAX_SELECT_SECONDS) {
- timeout = (usec + 1000000/HZ - 1) / (1000000/HZ);
- timeout += sec * (unsigned long) HZ;
- }
- }
-
- ret = -EINVAL;
- if (n < 0)
- goto out_nofds;
- if (n > current->files->max_fdset)
- n = current->files->max_fdset;
-
- /*
- * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
- * since we used fdset we need to allocate memory in units of
- * long-words.
- */
- ret = -ENOMEM;
- size = FDS_BYTES(n);
- bits = kmalloc(6 * size, GFP_KERNEL);
- if (!bits)
- goto out_nofds;
- fds.in = (unsigned long *) bits;
- fds.out = (unsigned long *) (bits + size);
- fds.ex = (unsigned long *) (bits + 2*size);
- fds.res_in = (unsigned long *) (bits + 3*size);
- fds.res_out = (unsigned long *) (bits + 4*size);
- fds.res_ex = (unsigned long *) (bits + 5*size);
-
- nn = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
- if ((ret = get_fd_set32(nn, fds.in, inp)) ||
- (ret = get_fd_set32(nn, fds.out, outp)) ||
- (ret = get_fd_set32(nn, fds.ex, exp)))
- goto out;
- zero_fd_set(n, fds.res_in);
- zero_fd_set(n, fds.res_out);
- zero_fd_set(n, fds.res_ex);
-
- ret = do_select(n, &fds, &timeout);
-
- if (tvp && !(current->personality & STICKY_TIMEOUTS)) {
- time_t sec = 0, usec = 0;
- if (timeout) {
- sec = timeout / HZ;
- usec = timeout % HZ;
- usec *= (1000000/HZ);
- }
- put_user(sec, &tvp->tv_sec);
- put_user(usec, &tvp->tv_usec);
- }
-
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
-
- set_fd_set32(nn, inp, fds.res_in);
- set_fd_set32(nn, outp, fds.res_out);
- set_fd_set32(nn, exp, fds.res_ex);
-
-out:
- kfree(bits);
-out_nofds:
- return ret;
-}
-
asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
struct compat_timespec *interval)
===== arch/mips/kernel/scall64-n32.S 1.3 vs edited =====
--- 1.3/arch/mips/kernel/scall64-n32.S Thu Apr 15 17:25:08 2004
+++ edited/arch/mips/kernel/scall64-n32.S Thu Apr 15 17:30:49 2004
@@ -132,7 +132,7 @@
PTR compat_sys_writev
PTR sys_access /* 6020 */
PTR sys_pipe
- PTR sys32_select
+ PTR compat_sys_select
PTR sys_sched_yield
PTR sys_mremap
PTR sys_msync /* 6025 */
===== arch/mips/kernel/scall64-o32.S 1.3 vs edited =====
--- 1.3/arch/mips/kernel/scall64-o32.S Thu Apr 15 17:25:08 2004
+++ edited/arch/mips/kernel/scall64-o32.S Thu Apr 15 17:30:49 2004
@@ -397,7 +397,7 @@
sys sys_setfsgid 1
sys sys32_llseek 5 /* 4140 */
sys sys32_getdents 3
- sys sys32_select 5
+ sys compat_sys_select 5
sys sys_flock 2
sys sys_msync 3
sys compat_sys_readv 3 /* 4145 */
===== arch/parisc/kernel/sys_parisc32.c 1.26 vs edited =====
--- 1.26/arch/parisc/kernel/sys_parisc32.c Thu Apr 15 17:25:08 2004
+++ edited/arch/parisc/kernel/sys_parisc32.c Thu Apr 15 17:30:49 2004
@@ -488,126 +488,6 @@
__put_user(*fdset, ufdset);
}
-/*** This is a virtual copy of sys_select from fs/select.c and probably
- *** should be compared to it from time to time
- ***/
-static inline void *select_bits_alloc(int size)
-{
- return kmalloc(6 * size, GFP_KERNEL);
-}
-
-static inline void select_bits_free(void *bits, int size)
-{
- kfree(bits);
-}
-
-/*
- * We can actually return ERESTARTSYS instead of EINTR, but I'd
- * like to be certain this leads to no problems. So I return
- * EINTR just for safety.
- *
- * Update: ERESTARTSYS breaks at least the xview clock binary, so
- * I'm trying ERESTARTNOHAND which restart only when you want to.
- */
-#define MAX_SELECT_SECONDS \
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-#define DIVIDE_ROUND_UP(x,y) (((x)+(y)-1)/(y))
-
-asmlinkage long
-sys32_select(int n, u32 *inp, u32 *outp, u32 *exp, struct compat_timeval *tvp)
-{
- fd_set_bits fds;
- char *bits;
- long timeout;
- int ret, size, err;
-
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (tvp) {
- struct compat_timeval tv32;
- time_t sec, usec;
-
- if ((ret = copy_from_user(&tv32, tvp, sizeof tv32)))
- goto out_nofds;
-
- sec = tv32.tv_sec;
- usec = tv32.tv_usec;
-
- ret = -EINVAL;
- if (sec < 0 || usec < 0)
- goto out_nofds;
-
- if ((unsigned long) sec < MAX_SELECT_SECONDS) {
- timeout = DIVIDE_ROUND_UP(usec, 1000000/HZ);
- timeout += sec * (unsigned long) HZ;
- }
- }
-
- ret = -EINVAL;
- if (n < 0)
- goto out_nofds;
-
- if (n > current->files->max_fdset)
- n = current->files->max_fdset;
-
- /*
- * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
- * since we used fdset we need to allocate memory in units of
- * long-words.
- */
- ret = -ENOMEM;
- size = FDS_BYTES(n);
- bits = select_bits_alloc(size);
- if (!bits)
- goto out_nofds;
- fds.in = (unsigned long *) bits;
- fds.out = (unsigned long *) (bits + size);
- fds.ex = (unsigned long *) (bits + 2*size);
- fds.res_in = (unsigned long *) (bits + 3*size);
- fds.res_out = (unsigned long *) (bits + 4*size);
- fds.res_ex = (unsigned long *) (bits + 5*size);
-
- if ((ret = get_fd_set32(n, inp, fds.in)) ||
- (ret = get_fd_set32(n, outp, fds.out)) ||
- (ret = get_fd_set32(n, exp, fds.ex)))
- goto out;
- zero_fd_set(n, fds.res_in);
- zero_fd_set(n, fds.res_out);
- zero_fd_set(n, fds.res_ex);
-
- ret = do_select(n, &fds, &timeout);
-
- if (tvp && !(current->personality & STICKY_TIMEOUTS)) {
- time_t sec = 0, usec = 0;
- if (timeout) {
- sec = timeout / HZ;
- usec = timeout % HZ;
- usec *= (1000000/HZ);
- }
- err = put_user(sec, &tvp->tv_sec);
- err |= __put_user(usec, &tvp->tv_usec);
- if (err)
- ret = -EFAULT;
- }
-
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
-
- set_fd_set32(n, inp, fds.res_in);
- set_fd_set32(n, outp, fds.res_out);
- set_fd_set32(n, exp, fds.res_ex);
-
-out:
- select_bits_free(bits, size);
-out_nofds:
- return ret;
-}
-
struct msgbuf32 {
int mtype;
char mtext[1];
@@ -664,7 +544,6 @@
kfree(mb);
return err;
}
-
asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset, s32 count)
{
===== arch/parisc/kernel/syscall_table.S 1.5 vs edited =====
--- 1.5/arch/parisc/kernel/syscall_table.S Thu Apr 15 17:25:08 2004
+++ edited/arch/parisc/kernel/syscall_table.S Thu Apr 15 17:30:49 2004
@@ -232,7 +232,7 @@
ENTRY_DIFF(getdents)
/* it is POSSIBLE that select will be OK because even though fd_set
* contains longs, the macros and sizes are clever. */
- ENTRY_DIFF(select)
+ ENTRY_COMP(select)
ENTRY_SAME(flock)
ENTRY_SAME(msync)
/* struct iovec contains pointers */
===== arch/ppc64/kernel/sys_ppc32.c 1.87 vs edited =====
--- 1.87/arch/ppc64/kernel/sys_ppc32.c Thu Apr 15 17:25:08 2004
+++ edited/arch/ppc64/kernel/sys_ppc32.c Thu Apr 15 17:30:49 2004
@@ -226,167 +226,12 @@
return error;
}
-/*
- * Ooo, nasty. We need here to frob 32-bit unsigned longs to
- * 64-bit unsigned longs.
- */
-static inline int
-get_fd_set32(unsigned long n, unsigned long *fdset, u32 *ufdset)
-{
- if (ufdset) {
- unsigned long odd;
-
- if (verify_area(VERIFY_WRITE, ufdset, n*sizeof(u32)))
- return -EFAULT;
-
- odd = n & 1UL;
- n &= ~1UL;
- while (n) {
- unsigned long h, l;
- __get_user(l, ufdset);
- __get_user(h, ufdset+1);
- ufdset += 2;
- *fdset++ = h << 32 | l;
- n -= 2;
- }
- if (odd)
- __get_user(*fdset, ufdset);
- } else {
- /* Tricky, must clear full unsigned long in the
- * kernel fdset at the end, this makes sure that
- * actually happens.
- */
- memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
- }
- return 0;
-}
-
-static inline void
-set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
-{
- unsigned long odd;
-
- if (!ufdset)
- return;
-
- odd = n & 1UL;
- n &= ~1UL;
- while (n) {
- unsigned long h, l;
- l = *fdset++;
- h = l >> 32;
- __put_user(l, ufdset);
- __put_user(h, ufdset+1);
- ufdset += 2;
- n -= 2;
- }
- if (odd)
- __put_user(*fdset, ufdset);
-}
-
-
-
-#define MAX_SELECT_SECONDS ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-
-asmlinkage long sys32_select(int n, u32 *inp, u32 *outp, u32 *exp, u32 tvp_x)
-{
- fd_set_bits fds;
- struct compat_timeval *tvp = (struct compat_timeval *)AA(tvp_x);
- char *bits;
- unsigned long nn;
- long timeout;
- int ret, size, max_fdset;
-
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (tvp) {
- time_t sec, usec;
- if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
- || (ret = __get_user(sec, &tvp->tv_sec))
- || (ret = __get_user(usec, &tvp->tv_usec)))
- goto out_nofds;
-
- ret = -EINVAL;
- if(sec < 0 || usec < 0)
- goto out_nofds;
-
- if ((unsigned long) sec < MAX_SELECT_SECONDS) {
- timeout = (usec + 1000000/HZ - 1) / (1000000/HZ);
- timeout += sec * (unsigned long) HZ;
- }
- }
-
- ret = -EINVAL;
- if (n < 0)
- goto out_nofds;
-
- /* max_fdset can increase, so grab it once to avoid race */
- max_fdset = current->files->max_fdset;
- if (n > max_fdset)
- n = max_fdset;
-
- /*
- * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
- * since we used fdset we need to allocate memory in units of
- * long-words.
- */
- ret = -ENOMEM;
- size = FDS_BYTES(n);
- bits = kmalloc(6 * size, GFP_KERNEL);
- if (!bits)
- goto out_nofds;
- fds.in = (unsigned long *) bits;
- fds.out = (unsigned long *) (bits + size);
- fds.ex = (unsigned long *) (bits + 2*size);
- fds.res_in = (unsigned long *) (bits + 3*size);
- fds.res_out = (unsigned long *) (bits + 4*size);
- fds.res_ex = (unsigned long *) (bits + 5*size);
-
- nn = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
- if ((ret = get_fd_set32(nn, fds.in, inp)) ||
- (ret = get_fd_set32(nn, fds.out, outp)) ||
- (ret = get_fd_set32(nn, fds.ex, exp)))
- goto out;
- zero_fd_set(n, fds.res_in);
- zero_fd_set(n, fds.res_out);
- zero_fd_set(n, fds.res_ex);
-
- ret = do_select(n, &fds, &timeout);
-
- if (tvp && !(current->personality & STICKY_TIMEOUTS)) {
- time_t sec = 0, usec = 0;
- if (timeout) {
- sec = timeout / HZ;
- usec = timeout % HZ;
- usec *= (1000000/HZ);
- }
- put_user(sec, &tvp->tv_sec);
- put_user(usec, &tvp->tv_usec);
- }
-
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
-
- set_fd_set32(nn, inp, fds.res_in);
- set_fd_set32(nn, outp, fds.res_out);
- set_fd_set32(nn, exp, fds.res_ex);
-
-out:
- kfree(bits);
-
-out_nofds:
- return ret;
-}
-
-int ppc32_select(u32 n, u32* inp, u32* outp, u32* exp, u32 tvp_x)
+asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
+ compat_ulong_t __user *outp, compat_ulong_t __user *exp,
+ compat_uptr_t tvp_x)
{
/* sign extend n */
- return sys32_select((int)n, inp, outp, exp, tvp_x);
+ return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
}
int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf)
===== arch/s390/kernel/compat_linux.c 1.20 vs edited =====
--- 1.20/arch/s390/kernel/compat_linux.c Thu Apr 15 17:25:08 2004
+++ edited/arch/s390/kernel/compat_linux.c Thu Apr 15 17:30:49 2004
@@ -503,160 +503,6 @@
/* end of readdir & getdents */
-/*
- * Ooo, nasty. We need here to frob 32-bit unsigned longs to
- * 64-bit unsigned longs.
- */
-
-static inline int
-get_fd_set32(unsigned long n, unsigned long *fdset, u32 *ufdset)
-{
- if (ufdset) {
- unsigned long odd;
-
- if (verify_area(VERIFY_WRITE, ufdset, n*sizeof(u32)))
- return -EFAULT;
-
- odd = n & 1UL;
- n &= ~1UL;
- while (n) {
- unsigned long h, l;
- __get_user(l, ufdset);
- __get_user(h, ufdset+1);
- ufdset += 2;
- *fdset++ = h << 32 | l;
- n -= 2;
- }
- if (odd)
- __get_user(*fdset, ufdset);
- } else {
- /* Tricky, must clear full unsigned long in the
- * kernel fdset at the end, this makes sure that
- * actually happens.
- */
- memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
- }
- return 0;
-}
-
-static inline void
-set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
-{
- unsigned long odd;
-
- if (!ufdset)
- return;
-
- odd = n & 1UL;
- n &= ~1UL;
- while (n) {
- unsigned long h, l;
- l = *fdset++;
- h = l >> 32;
- __put_user(l, ufdset);
- __put_user(h, ufdset+1);
- ufdset += 2;
- n -= 2;
- }
- if (odd)
- __put_user(*fdset, ufdset);
-}
-
-#define MAX_SELECT_SECONDS \
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-
-asmlinkage long sys32_select(int n, u32 *inp, u32 *outp, u32 *exp,
- struct compat_timeval *tvp)
-{
- fd_set_bits fds;
- char *bits;
- unsigned long nn;
- long timeout;
- int ret, size;
-
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (tvp) {
- int sec, usec;
-
- if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
- || (ret = __get_user(sec, &tvp->tv_sec))
- || (ret = __get_user(usec, &tvp->tv_usec)))
- goto out_nofds;
-
- ret = -EINVAL;
- if(sec < 0 || usec < 0)
- goto out_nofds;
-
- if ((unsigned long) sec < MAX_SELECT_SECONDS) {
- timeout = (usec + 1000000/HZ - 1) / (1000000/HZ);
- timeout += sec * (unsigned long) HZ;
- }
- }
-
- ret = -EINVAL;
- if (n < 0)
- goto out_nofds;
- if (n > current->files->max_fdset)
- n = current->files->max_fdset;
-
- /*
- * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
- * since we used fdset we need to allocate memory in units of
- * long-words.
- */
- ret = -ENOMEM;
- size = FDS_BYTES(n);
- bits = kmalloc(6 * size, GFP_KERNEL);
- if (!bits)
- goto out_nofds;
- fds.in = (unsigned long *) bits;
- fds.out = (unsigned long *) (bits + size);
- fds.ex = (unsigned long *) (bits + 2*size);
- fds.res_in = (unsigned long *) (bits + 3*size);
- fds.res_out = (unsigned long *) (bits + 4*size);
- fds.res_ex = (unsigned long *) (bits + 5*size);
-
- nn = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
- if ((ret = get_fd_set32(nn, fds.in, inp)) ||
- (ret = get_fd_set32(nn, fds.out, outp)) ||
- (ret = get_fd_set32(nn, fds.ex, exp)))
- goto out;
- zero_fd_set(n, fds.res_in);
- zero_fd_set(n, fds.res_out);
- zero_fd_set(n, fds.res_ex);
-
- ret = do_select(n, &fds, &timeout);
-
- if (tvp && !(current->personality & STICKY_TIMEOUTS)) {
- int sec = 0, usec = 0;
- if (timeout) {
- sec = timeout / HZ;
- usec = timeout % HZ;
- usec *= (1000000/HZ);
- }
- put_user(sec, &tvp->tv_sec);
- put_user(usec, &tvp->tv_usec);
- }
-
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
-
- set_fd_set32(nn, inp, fds.res_in);
- set_fd_set32(nn, outp, fds.res_out);
- set_fd_set32(nn, exp, fds.res_ex);
-
-out:
- kfree(bits);
-out_nofds:
- return ret;
-}
-
int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf)
{
int err;
===== arch/s390/kernel/compat_wrapper.S 1.10 vs edited =====
--- 1.10/arch/s390/kernel/compat_wrapper.S Thu Apr 15 17:25:08 2004
+++ edited/arch/s390/kernel/compat_wrapper.S Thu Apr 15 17:30:49 2004
@@ -641,14 +641,14 @@
llgfr %r4,%r4 # unsigned int
jg sys32_getdents # branch to system call
- .globl sys32_select_wrapper
-sys32_select_wrapper:
+ .globl compat_sys_select_wrapper
+compat_sys_select_wrapper:
lgfr %r2,%r2 # int
- llgtr %r3,%r3 # fd_set *
- llgtr %r4,%r4 # fd_set *
- llgtr %r5,%r5 # fd_set *
- llgtr %r6,%r6 # struct timeval_emu31 *
- jg sys32_select # branch to system call
+ llgtr %r3,%r3 # compat_fd_set *
+ llgtr %r4,%r4 # compat_fd_set *
+ llgtr %r5,%r5 # compat_fd_set *
+ llgtr %r6,%r6 # struct compat_timeval *
+ jg compat_sys_select # branch to system call
.globl sys32_flock_wrapper
sys32_flock_wrapper:
===== arch/s390/kernel/syscalls.S 1.10 vs edited =====
--- 1.10/arch/s390/kernel/syscalls.S Thu Apr 15 17:25:08 2004
+++ edited/arch/s390/kernel/syscalls.S Thu Apr 15 17:30:49 2004
@@ -150,7 +150,7 @@
SYSCALL(sys_setfsgid16,sys_ni_syscall,sys32_setfsgid16_wrapper) /* old setfsgid16 syscall */
SYSCALL(sys_llseek,sys_llseek,sys32_llseek_wrapper) /* 140 */
SYSCALL(sys_getdents,sys_getdents,sys32_getdents_wrapper)
-SYSCALL(sys_select,sys_select,sys32_select_wrapper)
+SYSCALL(sys_select,sys_select,compat_sys_select_wrapper)
SYSCALL(sys_flock,sys_flock,sys32_flock_wrapper)
SYSCALL(sys_msync,sys_msync,sys32_msync_wrapper)
SYSCALL(sys_readv,sys_readv,compat_sys_readv_wrapper) /* 145 */
===== arch/sparc64/kernel/sys_sparc32.c 1.96 vs edited =====
--- 1.96/arch/sparc64/kernel/sys_sparc32.c Thu Apr 15 17:25:08 2004
+++ edited/arch/sparc64/kernel/sys_sparc32.c Thu Apr 15 17:30:49 2004
@@ -964,158 +964,6 @@
/* end of readdir & getdents */
-/*
- * Ooo, nasty. We need here to frob 32-bit unsigned longs to
- * 64-bit unsigned longs.
- */
-
-static int get_fd_set32(unsigned long n, unsigned long *fdset, u32 *ufdset)
-{
- if (ufdset) {
- unsigned long odd;
-
- if (verify_area(VERIFY_WRITE, ufdset, n*sizeof(u32)))
- return -EFAULT;
-
- odd = n & 1UL;
- n &= ~1UL;
- while (n) {
- unsigned long h, l;
- __get_user(l, ufdset);
- __get_user(h, ufdset+1);
- ufdset += 2;
- *fdset++ = h << 32 | l;
- n -= 2;
- }
- if (odd)
- __get_user(*fdset, ufdset);
- } else {
- /* Tricky, must clear full unsigned long in the
- * kernel fdset at the end, this makes sure that
- * actually happens.
- */
- memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
- }
- return 0;
-}
-
-static void set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
-{
- unsigned long odd;
-
- if (!ufdset)
- return;
-
- odd = n & 1UL;
- n &= ~1UL;
- while (n) {
- unsigned long h, l;
- l = *fdset++;
- h = l >> 32;
- __put_user(l, ufdset);
- __put_user(h, ufdset+1);
- ufdset += 2;
- n -= 2;
- }
- if (odd)
- __put_user(*fdset, ufdset);
-}
-
-#define MAX_SELECT_SECONDS \
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-
-asmlinkage int sys32_select(int n, u32 *inp, u32 *outp, u32 *exp, u32 tvp_x)
-{
- fd_set_bits fds;
- struct compat_timeval *tvp = (struct compat_timeval *)AA(tvp_x);
- char *bits;
- unsigned long nn;
- long timeout;
- int ret, size;
-
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (tvp) {
- time_t sec, usec;
-
- if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
- || (ret = __get_user(sec, &tvp->tv_sec))
- || (ret = __get_user(usec, &tvp->tv_usec)))
- goto out_nofds;
-
- ret = -EINVAL;
- if(sec < 0 || usec < 0)
- goto out_nofds;
-
- if ((unsigned long) sec < MAX_SELECT_SECONDS) {
- timeout = (usec + 1000000/HZ - 1) / (1000000/HZ);
- timeout += sec * (unsigned long) HZ;
- }
- }
-
- ret = -EINVAL;
- if (n < 0)
- goto out_nofds;
- if (n > current->files->max_fdset)
- n = current->files->max_fdset;
-
- /*
- * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
- * since we used fdset we need to allocate memory in units of
- * long-words.
- */
- ret = -ENOMEM;
- size = FDS_BYTES(n);
- bits = kmalloc(6 * size, GFP_KERNEL);
- if (!bits)
- goto out_nofds;
- fds.in = (unsigned long *) bits;
- fds.out = (unsigned long *) (bits + size);
- fds.ex = (unsigned long *) (bits + 2*size);
- fds.res_in = (unsigned long *) (bits + 3*size);
- fds.res_out = (unsigned long *) (bits + 4*size);
- fds.res_ex = (unsigned long *) (bits + 5*size);
-
- nn = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
- if ((ret = get_fd_set32(nn, fds.in, inp)) ||
- (ret = get_fd_set32(nn, fds.out, outp)) ||
- (ret = get_fd_set32(nn, fds.ex, exp)))
- goto out;
- zero_fd_set(n, fds.res_in);
- zero_fd_set(n, fds.res_out);
- zero_fd_set(n, fds.res_ex);
-
- ret = do_select(n, &fds, &timeout);
-
- if (tvp && !(current->personality & STICKY_TIMEOUTS)) {
- time_t sec = 0, usec = 0;
- if (timeout) {
- sec = timeout / HZ;
- usec = timeout % HZ;
- usec *= (1000000/HZ);
- }
- put_user(sec, &tvp->tv_sec);
- put_user(usec, &tvp->tv_usec);
- }
-
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
-
- set_fd_set32(nn, inp, fds.res_in);
- set_fd_set32(nn, outp, fds.res_out);
- set_fd_set32(nn, exp, fds.res_ex);
-
-out:
- kfree(bits);
-out_nofds:
- return ret;
-}
-
int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf)
{
int err;
===== arch/sparc64/kernel/sys_sunos32.c 1.40 vs edited =====
--- 1.40/arch/sparc64/kernel/sys_sunos32.c Thu Apr 15 17:25:08 2004
+++ edited/arch/sparc64/kernel/sys_sunos32.c Thu Apr 15 17:30:49 2004
@@ -528,18 +528,15 @@
return ret;
}
-/* SunOS mount system call emulation */
-extern asmlinkage int
-sys32_select(int n, u32 inp, u32 outp, u32 exp, u32 tvp);
-
asmlinkage int sunos_select(int width, u32 inp, u32 outp, u32 exp, u32 tvp_x)
{
int ret;
/* SunOS binaries expect that select won't change the tvp contents */
- ret = sys32_select (width, inp, outp, exp, tvp_x);
+ ret = compat_sys_select(width, compat_ptr(inp), compat_ptr(outp),
+ compat_ptr(exp), compat_ptr(tvp_x));
if (ret == -EINTR && tvp_x) {
- struct compat_timeval *tvp = (struct compat_timeval *)A(tvp_x);
+ struct compat_timeval *tvp = compat_ptr(tvp_x);
time_t sec, usec;
__get_user(sec, &tvp->tv_sec);
===== arch/sparc64/kernel/systbls.S 1.53 vs edited =====
--- 1.53/arch/sparc64/kernel/systbls.S Thu Apr 15 17:25:08 2004
+++ edited/arch/sparc64/kernel/systbls.S Thu Apr 15 17:30:49 2004
@@ -37,7 +37,7 @@
.word sys_madvise, sys_vhangup, sys32_truncate64, sys_mincore, sys32_getgroups16
/*80*/ .word sys32_setgroups16, sys_getpgrp, sys_setgroups, compat_sys_setitimer, sys32_ftruncate64
.word sys_swapon, compat_sys_getitimer, sys_setuid, sys_sethostname, sys_setgid
-/*90*/ .word sys_dup2, sys_setfsuid, compat_sys_fcntl, sys32_select, sys_setfsgid
+/*90*/ .word sys_dup2, sys_setfsuid, compat_sys_fcntl, compat_sys_select, sys_setfsgid
.word sys_fsync, sys_setpriority32, sys_nis_syscall, sys_nis_syscall, sys_nis_syscall
/*100*/ .word sys_getpriority, sys32_rt_sigreturn, sys32_rt_sigaction, sys32_rt_sigprocmask, sys32_rt_sigpending
.word sys32_rt_sigtimedwait, sys32_rt_sigqueueinfo, sys32_rt_sigsuspend, sys_setresuid, sys_getresuid
@@ -65,7 +65,7 @@
.word sys32_ipc, sys32_sigreturn, sys_clone, sys_nis_syscall, sys32_adjtimex
/*220*/ .word compat_sys_sigprocmask, sys_ni_syscall, sys32_delete_module, sys_ni_syscall, sys_getpgid
.word sys32_bdflush, sys32_sysfs, sys_nis_syscall, sys32_setfsuid16, sys32_setfsgid16
-/*230*/ .word sys32_select, sys_time, sys_nis_syscall, sys_stime, compat_statfs64
+/*230*/ .word compat_sys_select, sys_time, sys_nis_syscall, sys_stime, compat_statfs64
.word compat_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys_mlockall
/*240*/ .word sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler
.word sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys32_sched_rr_get_interval, compat_sys_nanosleep
===== arch/x86_64/ia32/ia32entry.S 1.32 vs edited =====
--- 1.32/arch/x86_64/ia32/ia32entry.S Thu Apr 15 17:25:08 2004
+++ edited/arch/x86_64/ia32/ia32entry.S Thu Apr 15 17:30:49 2004
@@ -447,7 +447,7 @@
.quad sys_setfsgid16
.quad sys_llseek /* 140 */
.quad sys32_getdents
- .quad sys32_select
+ .quad compat_sys_select
.quad sys_flock
.quad sys_msync
.quad compat_sys_readv /* 145 */
===== arch/x86_64/ia32/sys_ia32.c 1.58 vs edited =====
--- 1.58/arch/x86_64/ia32/sys_ia32.c Thu Apr 15 17:25:08 2004
+++ edited/arch/x86_64/ia32/sys_ia32.c Thu Apr 15 17:30:49 2004
@@ -606,107 +606,6 @@
return error;
}
-/*
- * We can actually return ERESTARTSYS instead of EINTR, but I'd
- * like to be certain this leads to no problems. So I return
- * EINTR just for safety.
- *
- * Update: ERESTARTSYS breaks at least the xview clock binary, so
- * I'm trying ERESTARTNOHAND which restart only when you want to.
- */
-#define MAX_SELECT_SECONDS \
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
-#define ROUND_UP_TIME(x,y) (((x)+(y)-1)/(y))
-
-asmlinkage long
-sys32_select(int n, fd_set *inp, fd_set *outp, fd_set *exp, struct compat_timeval *tvp32)
-{
- fd_set_bits fds;
- char *bits;
- long timeout;
- int ret, size;
-
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (tvp32) {
- time_t sec, usec;
-
- get_user(sec, &tvp32->tv_sec);
- get_user(usec, &tvp32->tv_usec);
-
- ret = -EINVAL;
- if (sec < 0 || usec < 0)
- goto out_nofds;
-
- if ((unsigned long) sec < MAX_SELECT_SECONDS) {
- timeout = ROUND_UP_TIME(usec, 1000000/HZ);
- timeout += sec * (unsigned long) HZ;
- }
- }
-
- ret = -EINVAL;
- if (n < 0)
- goto out_nofds;
-
- if (n > current->files->max_fdset)
- n = current->files->max_fdset;
-
- /*
- * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
- * since we used fdset we need to allocate memory in units of
- * long-words.
- */
- ret = -ENOMEM;
- size = FDS_BYTES(n);
- bits = kmalloc(6 * size, GFP_KERNEL);
- if (!bits)
- goto out_nofds;
- fds.in = (unsigned long *) bits;
- fds.out = (unsigned long *) (bits + size);
- fds.ex = (unsigned long *) (bits + 2*size);
- fds.res_in = (unsigned long *) (bits + 3*size);
- fds.res_out = (unsigned long *) (bits + 4*size);
- fds.res_ex = (unsigned long *) (bits + 5*size);
-
- if ((ret = get_fd_set(n, inp, fds.in)) ||
- (ret = get_fd_set(n, outp, fds.out)) ||
- (ret = get_fd_set(n, exp, fds.ex)))
- goto out;
- zero_fd_set(n, fds.res_in);
- zero_fd_set(n, fds.res_out);
- zero_fd_set(n, fds.res_ex);
-
- ret = do_select(n, &fds, &timeout);
-
- if (tvp32 && !(current->personality & STICKY_TIMEOUTS)) {
- time_t sec = 0, usec = 0;
- if (timeout) {
- sec = timeout / HZ;
- usec = timeout % HZ;
- usec *= (1000000/HZ);
- }
- put_user(sec, (int *)&tvp32->tv_sec);
- put_user(usec, (int *)&tvp32->tv_usec);
- }
-
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
-
- set_fd_set(n, inp, fds.res_in);
- set_fd_set(n, outp, fds.res_out);
- set_fd_set(n, exp, fds.res_ex);
-
-out:
- kfree(bits);
-out_nofds:
- return ret;
-}
-
struct sel_arg_struct {
unsigned int n;
unsigned int inp;
@@ -722,8 +621,8 @@
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
- return sys32_select(a.n, (fd_set *)A(a.inp), (fd_set *)A(a.outp), (fd_set *)A(a.exp),
- (struct compat_timeval *)A(a.tvp));
+ return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
+ compat_ptr(a.exp), compat_ptr(a.tvp));
}
/*
===== fs/compat.c 1.23 vs edited =====
--- 1.23/fs/compat.c Thu Apr 15 17:25:08 2004
+++ edited/fs/compat.c Thu Apr 15 17:31:49 2004
@@ -1211,3 +1211,191 @@
return retval;
}
+
+#define __COMPAT_NFDBITS (8 * sizeof(compat_ulong_t))
+
+#define ROUND_UP(x,y) (((x)+(y)-1)/(y))
+
+/*
+ * Ooo, nasty. We need here to frob 32-bit unsigned longs to
+ * 64-bit unsigned longs.
+ */
+static inline
+int compat_get_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
+ unsigned long *fdset)
+{
+ nr = ROUND_UP(nr, __COMPAT_NFDBITS);
+ if (ufdset) {
+ unsigned long odd;
+
+ if (verify_area(VERIFY_WRITE, ufdset, nr*sizeof(compat_ulong_t)))
+ return -EFAULT;
+
+ odd = nr & 1UL;
+ nr &= ~1UL;
+ while (nr) {
+ unsigned long h, l;
+ __get_user(l, ufdset);
+ __get_user(h, ufdset+1);
+ ufdset += 2;
+ *fdset++ = h << 32 | l;
+ nr -= 2;
+ }
+ if (odd)
+ __get_user(*fdset, ufdset);
+ } else {
+ /* Tricky, must clear full unsigned long in the
+ * kernel fdset at the end, this makes sure that
+ * actually happens.
+ */
+ memset(fdset, 0, ((nr + 1) & ~1)*sizeof(compat_ulong_t));
+ }
+ return 0;
+}
+
+static inline
+void compat_set_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
+ unsigned long *fdset)
+{
+ unsigned long odd;
+ nr = ROUND_UP(nr, __COMPAT_NFDBITS);
+
+ if (!ufdset)
+ return;
+
+ odd = nr & 1UL;
+ nr &= ~1UL;
+ while (nr) {
+ unsigned long h, l;
+ l = *fdset++;
+ h = l >> 32;
+ __put_user(l, ufdset);
+ __put_user(h, ufdset+1);
+ ufdset += 2;
+ nr -= 2;
+ }
+ if (odd)
+ __put_user(*fdset, ufdset);
+}
+
+
+/*
+ * This is a virtual copy of sys_select from fs/select.c and probably
+ * should be compared to it from time to time
+ */
+static void *select_bits_alloc(int size)
+{
+ return kmalloc(6 * size, GFP_KERNEL);
+}
+
+static void select_bits_free(void *bits, int size)
+{
+ kfree(bits);
+}
+
+/*
+ * We can actually return ERESTARTSYS instead of EINTR, but I'd
+ * like to be certain this leads to no problems. So I return
+ * EINTR just for safety.
+ *
+ * Update: ERESTARTSYS breaks at least the xview clock binary, so
+ * I'm trying ERESTARTNOHAND which restart only when you want to.
+ */
+#define MAX_SELECT_SECONDS \
+ ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
+
+asmlinkage long
+compat_sys_select(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp,
+ compat_ulong_t __user *exp, struct compat_timeval __user *tvp)
+{
+ fd_set_bits fds;
+ char *bits;
+ long timeout;
+ int ret, size, max_fdset;
+
+ timeout = MAX_SCHEDULE_TIMEOUT;
+ if (tvp) {
+ time_t sec, usec;
+
+ if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
+ || (ret = __get_user(sec, &tvp->tv_sec))
+ || (ret = __get_user(usec, &tvp->tv_usec)))
+ goto out_nofds;
+
+ ret = -EINVAL;
+ if (sec < 0 || usec < 0)
+ goto out_nofds;
+
+ if ((unsigned long) sec < MAX_SELECT_SECONDS) {
+ timeout = ROUND_UP(usec, 1000000/HZ);
+ timeout += sec * (unsigned long) HZ;
+ }
+ }
+
+ ret = -EINVAL;
+ if (n < 0)
+ goto out_nofds;
+
+ /* max_fdset can increase, so grab it once to avoid race */
+ max_fdset = current->files->max_fdset;
+ if (n > max_fdset)
+ n = max_fdset;
+
+ /*
+ * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
+ * since we used fdset we need to allocate memory in units of
+ * long-words.
+ */
+ ret = -ENOMEM;
+ size = FDS_BYTES(n);
+ bits = select_bits_alloc(size);
+ if (!bits)
+ goto out_nofds;
+ fds.in = (unsigned long *) bits;
+ fds.out = (unsigned long *) (bits + size);
+ fds.ex = (unsigned long *) (bits + 2*size);
+ fds.res_in = (unsigned long *) (bits + 3*size);
+ fds.res_out = (unsigned long *) (bits + 4*size);
+ fds.res_ex = (unsigned long *) (bits + 5*size);
+
+ if ((ret = compat_get_fd_set(n, inp, fds.in)) ||
+ (ret = compat_get_fd_set(n, outp, fds.out)) ||
+ (ret = compat_get_fd_set(n, exp, fds.ex)))
+ goto out;
+ zero_fd_set(n, fds.res_in);
+ zero_fd_set(n, fds.res_out);
+ zero_fd_set(n, fds.res_ex);
+
+ ret = do_select(n, &fds, &timeout);
+
+ if (tvp && !(current->personality & STICKY_TIMEOUTS)) {
+ time_t sec = 0, usec = 0;
+ if (timeout) {
+ sec = timeout / HZ;
+ usec = timeout % HZ;
+ usec *= (1000000/HZ);
+ }
+ if (put_user(sec, &tvp->tv_sec) ||
+ put_user(usec, &tvp->tv_usec))
+ ret = -EFAULT;
+ }
+
+ if (ret < 0)
+ goto out;
+ if (!ret) {
+ ret = -ERESTARTNOHAND;
+ if (signal_pending(current))
+ goto out;
+ ret = 0;
+ }
+
+ compat_set_fd_set(n, inp, fds.res_in);
+ compat_set_fd_set(n, outp, fds.res_out);
+ compat_set_fd_set(n, exp, fds.res_ex);
+
+out:
+ select_bits_free(bits, size);
+out_nofds:
+ return ret;
+}
+
===== include/linux/compat.h 1.21 vs edited =====
--- 1.21/include/linux/compat.h Thu Apr 15 17:25:08 2004
+++ edited/include/linux/compat.h Thu Apr 15 17:30:49 2004
@@ -126,5 +126,9 @@
int compat_do_execve(char * filename, compat_uptr_t __user *argv,
compat_uptr_t __user *envp, struct pt_regs * regs);
+asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
+ compat_ulong_t __user *outp, compat_ulong_t __user *exp,
+ struct compat_timeval __user *tvp);
+
#endif /* CONFIG_COMPAT */
#endif /* _LINUX_COMPAT_H */
>
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [PATCH 3/4] Consolidate sys32_select
2004-04-16 16:05 ` [PATCH 3/4] Consolidate sys32_select Arnd Bergmann
@ 2004-05-25 22:02 ` Martin Josefsson
2004-05-25 22:12 ` David S. Miller
0 siblings, 1 reply; 8+ messages in thread
From: Martin Josefsson @ 2004-05-25 22:02 UTC (permalink / raw)
To: Arnd Bergmann; +Cc: linux-kernel, ultralinux
[-- Attachment #1: Type: text/plain, Size: 2781 bytes --]
On Fri, 2004-04-16 at 18:05, Arnd Bergmann wrote:
Hi Arnd.
> sys32_select has seven mostly but not exactly identical versions,
> so consolidate them as compat_sys_select. Based on the ppc64
> implementation, which most closely resembles sys_select.
> One bug that was not caught by LTP has been fixed since the
> first version of this patch.
>
> tested x86_64, ia64 and s390.
This breaks sparc64. rsync -> select() -> compat_sys_select() with a
user pointer that has bit (1<<32) set.
I came to this conclusion after having added lots of debug printk's.
Here's the debug printk:
compat_sys_select: before verify_area 00000001efff6468
The address printed is the address of the tvp argument.
The only weird thing with it is the (1<<32) bit, otherwise it looks like
the other pointers (this doesn't happen for all select()'s but I have a
testcase with rsync that reproduces it every time in exactly the same
way)
When this happens __get_user() generates a pagefault and we somehow get
stuck in a pagefault loop, we livelock.
(verify_area() is a noop on sparc64)
How it used to look in arch/sparc64/kernel/sys_sparc32.c
> -asmlinkage int sys32_select(int n, u32 *inp, u32 *outp, u32 *exp, u32 tvp_x)
> -{
> - fd_set_bits fds;
> - struct compat_timeval *tvp = (struct compat_timeval *)AA(tvp_x);
[snip]
> - if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
> - || (ret = __get_user(sec, &tvp->tv_sec))
> - || (ret = __get_user(usec, &tvp->tv_usec)))
> - goto out_nofds;
What it looks like now:
asmlinkage long
compat_sys_select(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp,
compat_ulong_t __user *exp, struct compat_timeval __user *tvp)
{
[snip]
time_t sec, usec;
if ((ret = verify_area(VERIFY_READ, tvp, sizeof(*tvp)))
|| (ret = __get_user(sec, &tvp->tv_sec))
|| (ret = __get_user(usec, &tvp->tv_usec)))
goto out_nofds;
This combined with this comment from arch/sparc64/kernel/sys_sparc32.c
/* Things to consider: the low-level assembly stub does
srl x, 0, x for first four arguments, so if you have
pointer to something in the first four arguments, just
declare it as a pointer, not u32. On the other side,
arguments from 5th onwards should be declared as u32
for pointers, and need AA() around each usage.
I added some simple casting to get rid of the high-bit and now rsync
works just fine and we don't livelock.
Do you have any ideas how to cleanly get this working again?
Masking argument five and onwards with 0xffffffffUL ?
On a related note, a quick look through fs/compat.c indicates that we
have the same problem with these compat functions as well:
compat_sys_io_getevent
compat_sys_mount
--
/Martin
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: [PATCH 3/4] Consolidate sys32_select
2004-05-25 22:02 ` Martin Josefsson
@ 2004-05-25 22:12 ` David S. Miller
2004-05-25 22:29 ` Martin Josefsson
0 siblings, 1 reply; 8+ messages in thread
From: David S. Miller @ 2004-05-25 22:12 UTC (permalink / raw)
To: Martin Josefsson; +Cc: arnd, linux-kernel, ultralinux
Just fix the code to use compat_ptr(). That's what we created
that macro for :-)
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 3/4] Consolidate sys32_select
2004-05-25 22:12 ` David S. Miller
@ 2004-05-25 22:29 ` Martin Josefsson
0 siblings, 0 replies; 8+ messages in thread
From: Martin Josefsson @ 2004-05-25 22:29 UTC (permalink / raw)
To: David S. Miller; +Cc: arnd, linux-kernel, ultralinux
[-- Attachment #1: Type: text/plain, Size: 415 bytes --]
On Wed, 2004-05-26 at 00:12, David S. Miller wrote:
> Just fix the code to use compat_ptr(). That's what we created
> that macro for :-)
You mean in compat_sys_select() ?
compat_ptr() takes an u32 as argument, needs casting, ugly.
But you want it done that way?
I see this problem when compat_sys_select() is called directly from
syscall, not via sunos_select() which uses compat_ptr()
--
/Martin
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH 4/4] Consolidate sys32_nfsservctl
2004-04-16 16:00 consolidate compat readv/writev/execve/select/nfsservctl [v2] Arnd Bergmann
` (2 preceding siblings ...)
2004-04-16 16:05 ` [PATCH 3/4] Consolidate sys32_select Arnd Bergmann
@ 2004-04-16 16:08 ` Arnd Bergmann
3 siblings, 0 replies; 8+ messages in thread
From: Arnd Bergmann @ 2004-04-16 16:08 UTC (permalink / raw)
To: linux-kernel
sys32_nfsservctl is the largest remaining syscall emulation handler that
can be consolidated. mips and ia64 currently don't use this at all,
parisc has a simpler implementation than the one used by s390, sparc
ppc and that the new compat_sys_nfsservctl is based on.
The user access checks in the code are inconsistant at least, which
should be fixed here.
Compile tested only due to lack of proper test setup.
arch/ia64/ia32/sys_ia32.c | 170 --------------------------
arch/parisc/kernel/sys_parisc32.c | 88 -------------
arch/parisc/kernel/syscall_table.S | 2
arch/ppc64/kernel/misc.S | 2
arch/ppc64/kernel/sys_ppc32.c | 239 -------------------------------------
arch/s390/kernel/compat_linux.c | 220 ----------------------------------
arch/s390/kernel/compat_wrapper.S | 10 -
arch/s390/kernel/syscalls.S | 2
arch/sparc64/kernel/sys_sparc32.c | 226 ----------------------------------
arch/sparc64/kernel/systbls.S | 2
arch/x86_64/ia32/ia32entry.S | 2
arch/x86_64/ia32/sys_ia32.c | 227 -----------------------------------
fs/compat.c | 239 +++++++++++++++++++++++++++++++++++++
13 files changed, 249 insertions(+), 1180 deletions(-)
===== arch/ia64/ia32/sys_ia32.c 1.96 vs edited =====
--- 1.96/arch/ia64/ia32/sys_ia32.c Thu Apr 15 19:30:49 2004
+++ edited/arch/ia64/ia32/sys_ia32.c Thu Apr 15 17:37:01 2004
@@ -2200,176 +2200,6 @@
return sys_setresgid(srgid, segid, ssgid);
}
-/* Stuff for NFS server syscalls... */
-struct nfsctl_svc32 {
- u16 svc32_port;
- s32 svc32_nthreads;
-};
-
-struct nfsctl_client32 {
- s8 cl32_ident[NFSCLNT_IDMAX+1];
- s32 cl32_naddr;
- struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
- s32 cl32_fhkeytype;
- s32 cl32_fhkeylen;
- u8 cl32_fhkey[NFSCLNT_KEYMAX];
-};
-
-struct nfsctl_export32 {
- s8 ex32_client[NFSCLNT_IDMAX+1];
- s8 ex32_path[NFS_MAXPATHLEN+1];
- compat_dev_t ex32_dev;
- compat_ino_t ex32_ino;
- s32 ex32_flags;
- compat_uid_t ex32_anon_uid;
- compat_gid_t ex32_anon_gid;
-};
-
-struct nfsctl_arg32 {
- s32 ca32_version; /* safeguard */
- union {
- struct nfsctl_svc32 u32_svc;
- struct nfsctl_client32 u32_client;
- struct nfsctl_export32 u32_export;
- u32 u32_debug;
- } u;
-#define ca32_svc u.u32_svc
-#define ca32_client u.u32_client
-#define ca32_export u.u32_export
-#define ca32_debug u.u32_debug
-};
-
-union nfsctl_res32 {
- struct knfs_fh cr32_getfh;
- u32 cr32_debug;
-};
-
-static int
-nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
- err |= __get_user(karg->ca_svc.svc_nthreads,
- &arg32->ca32_svc.svc32_nthreads);
- return err;
-}
-
-static int
-nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_client.cl_ident[0],
- &arg32->ca32_client.cl32_ident[0],
- NFSCLNT_IDMAX);
- err |= __get_user(karg->ca_client.cl_naddr,
- &arg32->ca32_client.cl32_naddr);
- err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
- &arg32->ca32_client.cl32_addrlist[0],
- (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
- err |= __get_user(karg->ca_client.cl_fhkeytype,
- &arg32->ca32_client.cl32_fhkeytype);
- err |= __get_user(karg->ca_client.cl_fhkeylen,
- &arg32->ca32_client.cl32_fhkeylen);
- err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
- &arg32->ca32_client.cl32_fhkey[0],
- NFSCLNT_KEYMAX);
- return err;
-}
-
-static int
-nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_export.ex_client[0],
- &arg32->ca32_export.ex32_client[0],
- NFSCLNT_IDMAX);
- err |= copy_from_user(&karg->ca_export.ex_path[0],
- &arg32->ca32_export.ex32_path[0],
- NFS_MAXPATHLEN);
- err |= __get_user(karg->ca_export.ex_dev,
- &arg32->ca32_export.ex32_dev);
- err |= __get_user(karg->ca_export.ex_ino,
- &arg32->ca32_export.ex32_ino);
- err |= __get_user(karg->ca_export.ex_flags,
- &arg32->ca32_export.ex32_flags);
- err |= __get_user(karg->ca_export.ex_anon_uid,
- &arg32->ca32_export.ex32_anon_uid);
- err |= __get_user(karg->ca_export.ex_anon_gid,
- &arg32->ca32_export.ex32_anon_gid);
- return err;
-}
-
-static int
-nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
-{
- int err;
-
- err = copy_to_user(&res32->cr32_getfh,
- &kres->cr_getfh,
- sizeof(res32->cr32_getfh));
- err |= __put_user(kres->cr_debug, &res32->cr32_debug);
- return err;
-}
-
-int asmlinkage
-sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
-{
- struct nfsctl_arg *karg = NULL;
- union nfsctl_res *kres = NULL;
- mm_segment_t oldfs;
- int err;
-
- karg = kmalloc(sizeof(*karg), GFP_USER);
- if(!karg)
- return -ENOMEM;
- if(res32) {
- kres = kmalloc(sizeof(*kres), GFP_USER);
- if(!kres) {
- kfree(karg);
- return -ENOMEM;
- }
- }
- switch(cmd) {
- case NFSCTL_SVC:
- err = nfs_svc32_trans(karg, arg32);
- break;
- case NFSCTL_ADDCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_DELCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_EXPORT:
- err = nfs_exp32_trans(karg, arg32);
- break;
- default:
- err = -EINVAL;
- break;
- }
- if(err)
- goto done;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_nfsservctl(cmd, karg, kres);
- set_fs(oldfs);
-
- if(!err && cmd == NFSCTL_GETFS)
- err = nfs_getfh32_res_trans(kres, res32);
-
-done:
- if(karg)
- kfree(karg);
- if(kres)
- kfree(kres);
- return err;
-}
-
/* Handle adjtimex compatibility. */
struct timex32 {
===== arch/parisc/kernel/sys_parisc32.c 1.27 vs edited =====
--- 1.27/arch/parisc/kernel/sys_parisc32.c Thu Apr 15 19:30:49 2004
+++ edited/arch/parisc/kernel/sys_parisc32.c Thu Apr 15 17:37:01 2004
@@ -564,94 +564,6 @@
return ret;
}
-/* EXPORT/UNEXPORT */
-struct nfsctl_export32 {
- char ex_client[NFSCLNT_IDMAX+1];
- char ex_path[NFS_MAXPATHLEN+1];
- __kernel_old_dev_t ex_dev;
- compat_ino_t ex_ino;
- int ex_flags;
- __kernel_uid_t ex_anon_uid;
- __kernel_gid_t ex_anon_gid;
-};
-
-struct nfsctl_arg32 {
- int ca_version; /* safeguard */
- /* wide kernel places this union on 8-byte boundary, narrow on 4 */
- union {
- struct nfsctl_svc u_svc;
- struct nfsctl_client u_client;
- struct nfsctl_export32 u_export;
- struct nfsctl_fdparm u_getfd;
- struct nfsctl_fsparm u_getfs;
- } u;
-};
-
-asmlinkage int sys32_nfsservctl(int cmd, void *argp, void *resp)
-{
- int ret, tmp;
- struct nfsctl_arg32 n32;
- struct nfsctl_arg n;
-
- ret = copy_from_user(&n, argp, sizeof n.ca_version);
- if (ret != 0)
- return ret;
-
- /* adjust argp to point at the union inside the user's n32 struct */
- tmp = (unsigned long)&n32.u - (unsigned long)&n32;
- argp = (void *)((unsigned long)argp + tmp);
- switch(cmd) {
- case NFSCTL_SVC:
- ret = copy_from_user(&n.u, argp, sizeof n.u.u_svc);
- break;
-
- case NFSCTL_ADDCLIENT:
- case NFSCTL_DELCLIENT:
- ret = copy_from_user(&n.u, argp, sizeof n.u.u_client);
- break;
-
- case NFSCTL_GETFD:
- ret = copy_from_user(&n.u, argp, sizeof n.u.u_getfd);
- break;
-
- case NFSCTL_GETFS:
- ret = copy_from_user(&n.u, argp, sizeof n.u.u_getfs);
- break;
-
- case NFSCTL_UNEXPORT: /* nfsctl_export */
- case NFSCTL_EXPORT: /* nfsctl_export */
- ret = copy_from_user(&n32.u, argp, sizeof n32.u.u_export);
-#undef CP
-#define CP(x) n.u.u_export.ex_##x = n32.u.u_export.ex_##x
- memcpy(n.u.u_export.ex_client, n32.u.u_export.ex_client, sizeof n32.u.u_export.ex_client);
- memcpy(n.u.u_export.ex_path, n32.u.u_export.ex_path, sizeof n32.u.u_export.ex_path);
- CP(dev);
- CP(ino);
- CP(flags);
- CP(anon_uid);
- CP(anon_gid);
- break;
-
- default:
- /* lockd probes for some other values (0x10000);
- * so don't BUG() */
- ret = -EINVAL;
- break;
- }
-
- if (ret == 0) {
- unsigned char rbuf[NFS_FHSIZE + sizeof (struct knfsd_fh)];
- KERNEL_SYSCALL(ret, sys_nfsservctl, cmd, &n, &rbuf);
- if (cmd == NFSCTL_GETFD) {
- ret = copy_to_user(resp, rbuf, NFS_FHSIZE);
- } else if (cmd == NFSCTL_GETFS) {
- ret = copy_to_user(resp, rbuf, sizeof (struct knfsd_fh));
- }
- }
-
- return ret;
-}
-
typedef long __kernel_loff_t32; /* move this to asm/posix_types.h? */
asmlinkage int sys32_sendfile64(int out_fd, int in_fd, __kernel_loff_t32 *offset, s32 count)
===== arch/parisc/kernel/syscall_table.S 1.6 vs edited =====
--- 1.6/arch/parisc/kernel/syscall_table.S Thu Apr 15 19:30:49 2004
+++ edited/arch/parisc/kernel/syscall_table.S Thu Apr 15 17:37:01 2004
@@ -266,7 +266,7 @@
ENTRY_SAME(ni_syscall) /* query_module */
ENTRY_SAME(poll)
/* structs contain pointers and an in_addr... */
- ENTRY_DIFF(nfsservctl)
+ ENTRY_COMP(nfsservctl)
ENTRY_SAME(setresgid) /* 170 */
ENTRY_SAME(getresgid)
ENTRY_SAME(prctl)
===== arch/ppc64/kernel/misc.S 1.76 vs edited =====
--- 1.76/arch/ppc64/kernel/misc.S Thu Apr 15 17:25:08 2004
+++ edited/arch/ppc64/kernel/misc.S Thu Apr 15 17:37:01 2004
@@ -740,7 +740,7 @@
.llong .sys_getresuid /* 165 */
.llong .sys_ni_syscall /* old query_module syscall */
.llong .sys_poll
- .llong .sys32_nfsservctl
+ .llong .compat_sys_nfsservctl
.llong .sys_setresgid
.llong .sys_getresgid /* 170 */
.llong .sys32_prctl
===== arch/ppc64/kernel/sys_ppc32.c 1.88 vs edited =====
--- 1.88/arch/ppc64/kernel/sys_ppc32.c Thu Apr 15 19:30:49 2004
+++ edited/arch/ppc64/kernel/sys_ppc32.c Thu Apr 15 17:37:01 2004
@@ -351,245 +351,6 @@
return ret;
}
-/* Stuff for NFS server syscalls... */
-struct nfsctl_svc32 {
- u16 svc32_port;
- s32 svc32_nthreads;
-};
-
-struct nfsctl_client32 {
- s8 cl32_ident[NFSCLNT_IDMAX+1];
- s32 cl32_naddr;
- struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
- s32 cl32_fhkeytype;
- s32 cl32_fhkeylen;
- u8 cl32_fhkey[NFSCLNT_KEYMAX];
-};
-
-struct nfsctl_export32 {
- s8 ex32_client[NFSCLNT_IDMAX+1];
- s8 ex32_path[NFS_MAXPATHLEN+1];
- compat_dev_t ex32_dev;
- compat_ino_t ex32_ino;
- s32 ex32_flags;
- compat_uid_t ex32_anon_uid;
- compat_gid_t ex32_anon_gid;
-};
-
-struct nfsctl_fdparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_version;
-};
-
-struct nfsctl_fsparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_maxlen;
-};
-
-struct nfsctl_arg32 {
- s32 ca32_version; /* safeguard */
- union {
- struct nfsctl_svc32 u32_svc;
- struct nfsctl_client32 u32_client;
- struct nfsctl_export32 u32_export;
- struct nfsctl_fdparm32 u32_getfd;
- struct nfsctl_fsparm32 u32_getfs;
- } u;
-#define ca32_svc u.u32_svc
-#define ca32_client u.u32_client
-#define ca32_export u.u32_export
-#define ca32_getfd u.u32_getfd
-#define ca32_getfs u.u32_getfs
-};
-
-union nfsctl_res32 {
- __u8 cr32_getfh[NFS_FHSIZE];
- struct knfsd_fh cr32_getfs;
-};
-
-static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
- err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads);
- return err;
-}
-
-static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_client.cl_ident[0],
- &arg32->ca32_client.cl32_ident[0],
- NFSCLNT_IDMAX);
- err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr);
- err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
- &arg32->ca32_client.cl32_addrlist[0],
- (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
- err |= __get_user(karg->ca_client.cl_fhkeytype,
- &arg32->ca32_client.cl32_fhkeytype);
- err |= __get_user(karg->ca_client.cl_fhkeylen,
- &arg32->ca32_client.cl32_fhkeylen);
- err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
- &arg32->ca32_client.cl32_fhkey[0],
- NFSCLNT_KEYMAX);
-
- if(err) return -EFAULT;
- return 0;
-}
-
-static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_export.ex_client[0],
- &arg32->ca32_export.ex32_client[0],
- NFSCLNT_IDMAX);
- err |= copy_from_user(&karg->ca_export.ex_path[0],
- &arg32->ca32_export.ex32_path[0],
- NFS_MAXPATHLEN);
- err |= __get_user(karg->ca_export.ex_dev,
- &arg32->ca32_export.ex32_dev);
- err |= __get_user(karg->ca_export.ex_ino,
- &arg32->ca32_export.ex32_ino);
- err |= __get_user(karg->ca_export.ex_flags,
- &arg32->ca32_export.ex32_flags);
- err |= __get_user(karg->ca_export.ex_anon_uid,
- &arg32->ca32_export.ex32_anon_uid);
- err |= __get_user(karg->ca_export.ex_anon_gid,
- &arg32->ca32_export.ex32_anon_gid);
- karg->ca_export.ex_anon_uid = karg->ca_export.ex_anon_uid;
- karg->ca_export.ex_anon_gid = karg->ca_export.ex_anon_gid;
-
- if(err) return -EFAULT;
- return 0;
-}
-
-static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfd.gd_addr,
- &arg32->ca32_getfd.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfd.gd_path,
- &arg32->ca32_getfd.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= __get_user(karg->ca_getfd.gd_version,
- &arg32->ca32_getfd.gd32_version);
-
- if(err) return -EFAULT;
- return 0;
-}
-
-static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfs.gd_addr,
- &arg32->ca32_getfs.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfs.gd_path,
- &arg32->ca32_getfs.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= __get_user(karg->ca_getfs.gd_maxlen,
- &arg32->ca32_getfs.gd32_maxlen);
-
- if(err) return -EFAULT;
- return 0;
-}
-
-/* This really doesn't need translations, we are only passing
- * back a union which contains opaque nfs file handle data.
- */
-static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
-{
- int err;
-
- err = copy_to_user(res32, kres, sizeof(*res32));
-
- if(err) return -EFAULT;
- return 0;
-}
-
-/* Note: it is necessary to treat cmd_parm as an unsigned int,
- * with the corresponding cast to a signed int to insure that the
- * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
- * and the register representation of a signed int (msr in 64-bit mode) is performed.
- */
-int asmlinkage sys32_nfsservctl(u32 cmd_parm, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
-{
- int cmd = (int)cmd_parm;
- struct nfsctl_arg *karg = NULL;
- union nfsctl_res *kres = NULL;
- mm_segment_t oldfs;
- int err;
-
- karg = kmalloc(sizeof(*karg), GFP_USER);
- if(!karg)
- return -ENOMEM;
- if(res32) {
- kres = kmalloc(sizeof(*kres), GFP_USER);
- if(!kres) {
- kfree(karg);
- return -ENOMEM;
- }
- }
- switch(cmd) {
- case NFSCTL_SVC:
- err = nfs_svc32_trans(karg, arg32);
- break;
- case NFSCTL_ADDCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_DELCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_EXPORT:
- case NFSCTL_UNEXPORT:
- err = nfs_exp32_trans(karg, arg32);
- break;
- case NFSCTL_GETFD:
- err = nfs_getfd32_trans(karg, arg32);
- break;
- case NFSCTL_GETFS:
- err = nfs_getfs32_trans(karg, arg32);
- break;
- default:
- err = -EINVAL;
- break;
- }
- if(err)
- goto done;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_nfsservctl(cmd, karg, kres);
- set_fs(oldfs);
-
- if (err)
- goto done;
-
- if((cmd == NFSCTL_GETFD) ||
- (cmd == NFSCTL_GETFS))
- err = nfs_getfh32_res_trans(kres, res32);
-
-done:
- if(karg)
- kfree(karg);
- if(kres)
- kfree(kres);
- return err;
-}
-
-
/* These are here just in case some old sparc32 binary calls it. */
asmlinkage long sys32_pause(void)
===== arch/s390/kernel/compat_linux.c 1.21 vs edited =====
--- 1.21/arch/s390/kernel/compat_linux.c Thu Apr 15 19:30:49 2004
+++ edited/arch/s390/kernel/compat_linux.c Thu Apr 15 17:37:01 2004
@@ -815,226 +815,6 @@
#endif /* CONFIG_MODULES */
-/* Stuff for NFS server syscalls... */
-struct nfsctl_svc32 {
- u16 svc32_port;
- s32 svc32_nthreads;
-};
-
-struct nfsctl_client32 {
- s8 cl32_ident[NFSCLNT_IDMAX+1];
- s32 cl32_naddr;
- struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
- s32 cl32_fhkeytype;
- s32 cl32_fhkeylen;
- u8 cl32_fhkey[NFSCLNT_KEYMAX];
-};
-
-struct nfsctl_export32 {
- s8 ex32_client[NFSCLNT_IDMAX+1];
- s8 ex32_path[NFS_MAXPATHLEN+1];
- compat_dev_t ex32_dev;
- compat_ino_t ex32_ino;
- s32 ex32_flags;
- compat_uid_t ex32_anon_uid;
- compat_gid_t ex32_anon_gid;
-};
-
-struct nfsctl_fdparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_version;
-};
-
-struct nfsctl_fsparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_maxlen;
-};
-
-struct nfsctl_arg32 {
- s32 ca32_version; /* safeguard */
- union {
- struct nfsctl_svc32 u32_svc;
- struct nfsctl_client32 u32_client;
- struct nfsctl_export32 u32_export;
- struct nfsctl_fdparm32 u32_getfd;
- struct nfsctl_fsparm32 u32_getfs;
- } u;
-#define ca32_svc u.u32_svc
-#define ca32_client u.u32_client
-#define ca32_export u.u32_export
-#define ca32_getfd u.u32_getfd
-#define ca32_getfs u.u32_getfs
-#define ca32_authd u.u32_authd
-};
-
-union nfsctl_res32 {
- __u8 cr32_getfh[NFS_FHSIZE];
- struct knfsd_fh cr32_getfs;
-};
-
-static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
- err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads);
- return err;
-}
-
-static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_client.cl_ident[0],
- &arg32->ca32_client.cl32_ident[0],
- NFSCLNT_IDMAX);
- err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr);
- err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
- &arg32->ca32_client.cl32_addrlist[0],
- (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
- err |= __get_user(karg->ca_client.cl_fhkeytype,
- &arg32->ca32_client.cl32_fhkeytype);
- err |= __get_user(karg->ca_client.cl_fhkeylen,
- &arg32->ca32_client.cl32_fhkeylen);
- err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
- &arg32->ca32_client.cl32_fhkey[0],
- NFSCLNT_KEYMAX);
- return err;
-}
-
-static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_export.ex_client[0],
- &arg32->ca32_export.ex32_client[0],
- NFSCLNT_IDMAX);
- err |= copy_from_user(&karg->ca_export.ex_path[0],
- &arg32->ca32_export.ex32_path[0],
- NFS_MAXPATHLEN);
- err |= __get_user(karg->ca_export.ex_dev,
- &arg32->ca32_export.ex32_dev);
- err |= __get_user(karg->ca_export.ex_ino,
- &arg32->ca32_export.ex32_ino);
- err |= __get_user(karg->ca_export.ex_flags,
- &arg32->ca32_export.ex32_flags);
- err |= __get_user(karg->ca_export.ex_anon_uid,
- &arg32->ca32_export.ex32_anon_uid);
- err |= __get_user(karg->ca_export.ex_anon_gid,
- &arg32->ca32_export.ex32_anon_gid);
- karg->ca_export.ex_anon_uid = high2lowuid(karg->ca_export.ex_anon_uid);
- karg->ca_export.ex_anon_gid = high2lowgid(karg->ca_export.ex_anon_gid);
- return err;
-}
-
-static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfd.gd_addr,
- &arg32->ca32_getfd.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfd.gd_path,
- &arg32->ca32_getfd.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= __get_user(karg->ca_getfd.gd_version,
- &arg32->ca32_getfd.gd32_version);
- return err;
-}
-
-static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfs.gd_addr,
- &arg32->ca32_getfs.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfs.gd_path,
- &arg32->ca32_getfs.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= __get_user(karg->ca_getfs.gd_maxlen,
- &arg32->ca32_getfs.gd32_maxlen);
- return err;
-}
-
-/* This really doesn't need translations, we are only passing
- * back a union which contains opaque nfs file handle data.
- */
-static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
-{
- return copy_to_user(res32, kres, sizeof(*res32)) ? -EFAULT : 0;
-}
-
-long asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
-{
- struct nfsctl_arg *karg = NULL;
- union nfsctl_res *kres = NULL;
- mm_segment_t oldfs;
- int err;
-
- karg = kmalloc(sizeof(*karg), GFP_USER);
- if(!karg)
- return -ENOMEM;
- if(res32) {
- kres = kmalloc(sizeof(*kres), GFP_USER);
- if(!kres) {
- kfree(karg);
- return -ENOMEM;
- }
- }
- switch(cmd) {
- case NFSCTL_SVC:
- err = nfs_svc32_trans(karg, arg32);
- break;
- case NFSCTL_ADDCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_DELCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_EXPORT:
- case NFSCTL_UNEXPORT:
- err = nfs_exp32_trans(karg, arg32);
- break;
- case NFSCTL_GETFD:
- err = nfs_getfd32_trans(karg, arg32);
- break;
- case NFSCTL_GETFS:
- err = nfs_getfs32_trans(karg, arg32);
- break;
- default:
- err = -EINVAL;
- break;
- }
- if(err)
- goto done;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_nfsservctl(cmd, karg, kres);
- set_fs(oldfs);
-
- if (err)
- goto done;
-
- if((cmd == NFSCTL_GETFD) ||
- (cmd == NFSCTL_GETFS))
- err = nfs_getfh32_res_trans(kres, res32);
-
-done:
- if(karg)
- kfree(karg);
- if(kres)
- kfree(kres);
- return err;
-}
-
/* Translations due to time_t size differences. Which affects all
sorts of things, like timeval and itimerval. */
===== arch/s390/kernel/compat_wrapper.S 1.11 vs edited =====
--- 1.11/arch/s390/kernel/compat_wrapper.S Thu Apr 15 19:30:49 2004
+++ edited/arch/s390/kernel/compat_wrapper.S Thu Apr 15 17:37:01 2004
@@ -786,12 +786,12 @@
lgfr %r4,%r4 # long
jg sys_poll # branch to system call
- .globl sys32_nfsservctl_wrapper
-sys32_nfsservctl_wrapper:
+ .globl compat_sys_nfsservctl_wrapper
+compat_sys_nfsservctl_wrapper:
lgfr %r2,%r2 # int
- llgtr %r3,%r3 # struct nfsctl_arg_emu31 *
- llgtr %r4,%r4 # union nfsctl_res_emu31 *
- jg sys32_nfsservctl # branch to system call
+ llgtr %r3,%r3 # struct compat_nfsctl_arg*
+ llgtr %r4,%r4 # union compat_nfsctl_res*
+ jg compat_sys_nfsservctl # branch to system call
.globl sys32_setresgid16_wrapper
sys32_setresgid16_wrapper:
===== arch/s390/kernel/syscalls.S 1.11 vs edited =====
--- 1.11/arch/s390/kernel/syscalls.S Thu Apr 15 19:30:49 2004
+++ edited/arch/s390/kernel/syscalls.S Thu Apr 15 17:37:01 2004
@@ -177,7 +177,7 @@
NI_SYSCALL /* for vm86 */
NI_SYSCALL /* old sys_query_module */
SYSCALL(sys_poll,sys_poll,sys32_poll_wrapper)
-SYSCALL(sys_nfsservctl,sys_nfsservctl,sys32_nfsservctl_wrapper)
+SYSCALL(sys_nfsservctl,sys_nfsservctl,compat_sys_nfsservctl_wrapper)
SYSCALL(sys_setresgid16,sys_ni_syscall,sys32_setresgid16_wrapper) /* 170 old setresgid16 syscall */
SYSCALL(sys_getresgid16,sys_ni_syscall,sys32_getresgid16_wrapper) /* old getresgid16 syscall */
SYSCALL(sys_prctl,sys_prctl,sys32_prctl_wrapper)
===== arch/sparc64/kernel/sys_sparc32.c 1.97 vs edited =====
--- 1.97/arch/sparc64/kernel/sys_sparc32.c Thu Apr 15 19:30:49 2004
+++ edited/arch/sparc64/kernel/sys_sparc32.c Thu Apr 15 17:37:01 2004
@@ -1392,232 +1392,6 @@
#endif /* CONFIG_MODULES */
-#if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
-/* Stuff for NFS server syscalls... */
-struct nfsctl_svc32 {
- u16 svc32_port;
- s32 svc32_nthreads;
-};
-
-struct nfsctl_client32 {
- s8 cl32_ident[NFSCLNT_IDMAX+1];
- s32 cl32_naddr;
- struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
- s32 cl32_fhkeytype;
- s32 cl32_fhkeylen;
- u8 cl32_fhkey[NFSCLNT_KEYMAX];
-};
-
-struct nfsctl_export32 {
- s8 ex32_client[NFSCLNT_IDMAX+1];
- s8 ex32_path[NFS_MAXPATHLEN+1];
- compat_dev_t ex32_dev;
- compat_ino_t ex32_ino;
- s32 ex32_flags;
- compat_uid_t ex32_anon_uid;
- compat_gid_t ex32_anon_gid;
-};
-
-struct nfsctl_fdparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_version;
-};
-
-struct nfsctl_fsparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_maxlen;
-};
-
-struct nfsctl_arg32 {
- s32 ca32_version; /* safeguard */
- union {
- struct nfsctl_svc32 u32_svc;
- struct nfsctl_client32 u32_client;
- struct nfsctl_export32 u32_export;
- struct nfsctl_fdparm32 u32_getfd;
- struct nfsctl_fsparm32 u32_getfs;
- } u;
-#define ca32_svc u.u32_svc
-#define ca32_client u.u32_client
-#define ca32_export u.u32_export
-#define ca32_getfd u.u32_getfd
-#define ca32_getfs u.u32_getfs
-};
-
-union nfsctl_res32 {
- __u8 cr32_getfh[NFS_FHSIZE];
- struct knfsd_fh cr32_getfs;
-};
-
-static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
- err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads);
- return err;
-}
-
-static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_client.cl_ident[0],
- &arg32->ca32_client.cl32_ident[0],
- NFSCLNT_IDMAX);
- err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr);
- err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
- &arg32->ca32_client.cl32_addrlist[0],
- (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
- err |= __get_user(karg->ca_client.cl_fhkeytype,
- &arg32->ca32_client.cl32_fhkeytype);
- err |= __get_user(karg->ca_client.cl_fhkeylen,
- &arg32->ca32_client.cl32_fhkeylen);
- err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
- &arg32->ca32_client.cl32_fhkey[0],
- NFSCLNT_KEYMAX);
- return (err ? -EFAULT : 0);
-}
-
-static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_export.ex_client[0],
- &arg32->ca32_export.ex32_client[0],
- NFSCLNT_IDMAX);
- err |= copy_from_user(&karg->ca_export.ex_path[0],
- &arg32->ca32_export.ex32_path[0],
- NFS_MAXPATHLEN);
- err |= __get_user(karg->ca_export.ex_dev,
- &arg32->ca32_export.ex32_dev);
- err |= __get_user(karg->ca_export.ex_ino,
- &arg32->ca32_export.ex32_ino);
- err |= __get_user(karg->ca_export.ex_flags,
- &arg32->ca32_export.ex32_flags);
- err |= __get_user(karg->ca_export.ex_anon_uid,
- &arg32->ca32_export.ex32_anon_uid);
- err |= __get_user(karg->ca_export.ex_anon_gid,
- &arg32->ca32_export.ex32_anon_gid);
- karg->ca_export.ex_anon_uid = high2lowuid(karg->ca_export.ex_anon_uid);
- karg->ca_export.ex_anon_gid = high2lowgid(karg->ca_export.ex_anon_gid);
- return (err ? -EFAULT : 0);
-}
-
-static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfd.gd_addr,
- &arg32->ca32_getfd.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfd.gd_path,
- &arg32->ca32_getfd.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= __get_user(karg->ca_getfd.gd_version,
- &arg32->ca32_getfd.gd32_version);
- return (err ? -EFAULT : 0);
-}
-
-static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = __get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfs.gd_addr,
- &arg32->ca32_getfs.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfs.gd_path,
- &arg32->ca32_getfs.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= __get_user(karg->ca_getfs.gd_maxlen,
- &arg32->ca32_getfs.gd32_maxlen);
- return (err ? -EFAULT : 0);
-}
-
-/* This really doesn't need translations, we are only passing
- * back a union which contains opaque nfs file handle data.
- */
-static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
-{
- return (copy_to_user(res32, kres, sizeof(*res32)) ? -EFAULT : 0);
-}
-
-int asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
-{
- struct nfsctl_arg *karg = NULL;
- union nfsctl_res *kres = NULL;
- mm_segment_t oldfs;
- int err;
-
- karg = kmalloc(sizeof(*karg), GFP_USER);
- if(!karg)
- return -ENOMEM;
- if(res32) {
- kres = kmalloc(sizeof(*kres), GFP_USER);
- if(!kres) {
- kfree(karg);
- return -ENOMEM;
- }
- }
- switch(cmd) {
- case NFSCTL_SVC:
- err = nfs_svc32_trans(karg, arg32);
- break;
- case NFSCTL_ADDCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_DELCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_EXPORT:
- case NFSCTL_UNEXPORT:
- err = nfs_exp32_trans(karg, arg32);
- break;
- case NFSCTL_GETFD:
- err = nfs_getfd32_trans(karg, arg32);
- break;
- case NFSCTL_GETFS:
- err = nfs_getfs32_trans(karg, arg32);
- break;
- default:
- err = -EINVAL;
- break;
- }
- if(err)
- goto done;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_nfsservctl(cmd, karg, kres);
- set_fs(oldfs);
-
- if (err)
- goto done;
-
- if((cmd == NFSCTL_GETFD) ||
- (cmd == NFSCTL_GETFS))
- err = nfs_getfh32_res_trans(kres, res32);
-
-done:
- if(karg)
- kfree(karg);
- if(kres)
- kfree(kres);
- return err;
-}
-#else /* !NFSD */
-int asmlinkage sys32_nfsservctl(int cmd, void *notused, void *notused2)
-{
- return sys_ni_syscall();
-}
-#endif
-
/* Translations due to time_t size differences. Which affects all
sorts of things, like timeval and itimerval. */
===== arch/sparc64/kernel/systbls.S 1.54 vs edited =====
--- 1.54/arch/sparc64/kernel/systbls.S Thu Apr 15 19:30:49 2004
+++ edited/arch/sparc64/kernel/systbls.S Thu Apr 15 17:37:01 2004
@@ -69,7 +69,7 @@
.word compat_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys_mlockall
/*240*/ .word sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler
.word sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys32_sched_rr_get_interval, compat_sys_nanosleep
-/*250*/ .word sys32_mremap, sys32_sysctl, sys_getsid, sys_fdatasync, sys32_nfsservctl
+/*250*/ .word sys32_mremap, sys32_sysctl, sys_getsid, sys_fdatasync, compat_sys_nfsservctl
.word sys_ni_syscall, compat_clock_settime, compat_clock_gettime, compat_clock_getres, compat_clock_nanosleep
/*260*/ .word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, compat_timer_settime, compat_timer_gettime, sys_timer_getoverrun
.word sys_timer_delete, sys32_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
===== arch/x86_64/ia32/ia32entry.S 1.33 vs edited =====
--- 1.33/arch/x86_64/ia32/ia32entry.S Thu Apr 15 19:30:49 2004
+++ edited/arch/x86_64/ia32/ia32entry.S Thu Apr 15 17:37:01 2004
@@ -474,7 +474,7 @@
.quad sys32_vm86_warning /* vm86 */
.quad quiet_ni_syscall /* query_module */
.quad sys_poll
- .quad sys32_nfsservctl
+ .quad compat_sys_nfsservctl
.quad sys_setresgid16 /* 170 */
.quad sys_getresgid16
.quad sys_prctl
===== arch/x86_64/ia32/sys_ia32.c 1.59 vs edited =====
--- 1.59/arch/x86_64/ia32/sys_ia32.c Thu Apr 15 19:30:49 2004
+++ edited/arch/x86_64/ia32/sys_ia32.c Thu Apr 15 17:37:01 2004
@@ -1166,233 +1166,6 @@
}
-#if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
-/* Stuff for NFS server syscalls... */
-struct nfsctl_svc32 {
- u16 svc32_port;
- s32 svc32_nthreads;
-};
-
-struct nfsctl_client32 {
- s8 cl32_ident[NFSCLNT_IDMAX+1];
- s32 cl32_naddr;
- struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
- s32 cl32_fhkeytype;
- s32 cl32_fhkeylen;
- u8 cl32_fhkey[NFSCLNT_KEYMAX];
-};
-
-struct nfsctl_export32 {
- s8 ex32_client[NFSCLNT_IDMAX+1];
- s8 ex32_path[NFS_MAXPATHLEN+1];
- compat_dev_t ex32_dev;
- compat_ino_t ex32_ino;
- s32 ex32_flags;
- compat_pid_t ex32_anon_uid;
- compat_gid_t ex32_anon_gid;
-};
-
-struct nfsctl_fdparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_version;
-};
-
-struct nfsctl_fsparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_maxlen;
-};
-
-struct nfsctl_arg32 {
- s32 ca32_version; /* safeguard */
- union {
- struct nfsctl_svc32 u32_svc;
- struct nfsctl_client32 u32_client;
- struct nfsctl_export32 u32_export;
- struct nfsctl_fdparm32 u32_getfd;
- struct nfsctl_fsparm32 u32_getfs;
- } u;
-#define ca32_svc u.u32_svc
-#define ca32_client u.u32_client
-#define ca32_export u.u32_export
-#define ca32_getfd u.u32_getfd
-#define ca32_getfs u.u32_getfs
-};
-
-union nfsctl_res32 {
- __u8 cr32_getfh[NFS_FHSIZE];
- struct knfsd_fh cr32_getfs;
-};
-
-static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
- err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads);
- return err;
-}
-
-static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_client.cl_ident[0],
- &arg32->ca32_client.cl32_ident[0],
- NFSCLNT_IDMAX);
- err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr);
- err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
- &arg32->ca32_client.cl32_addrlist[0],
- (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
- err |= __get_user(karg->ca_client.cl_fhkeytype,
- &arg32->ca32_client.cl32_fhkeytype);
- err |= __get_user(karg->ca_client.cl_fhkeylen,
- &arg32->ca32_client.cl32_fhkeylen);
- err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
- &arg32->ca32_client.cl32_fhkey[0],
- NFSCLNT_KEYMAX);
- return err;
-}
-
-static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_export.ex_client[0],
- &arg32->ca32_export.ex32_client[0],
- NFSCLNT_IDMAX);
- err |= copy_from_user(&karg->ca_export.ex_path[0],
- &arg32->ca32_export.ex32_path[0],
- NFS_MAXPATHLEN);
- err |= __get_user(karg->ca_export.ex_dev,
- &arg32->ca32_export.ex32_dev);
- err |= __get_user(karg->ca_export.ex_ino,
- &arg32->ca32_export.ex32_ino);
- err |= __get_user(karg->ca_export.ex_flags,
- &arg32->ca32_export.ex32_flags);
- err |= __get_user(karg->ca_export.ex_anon_uid,
- &arg32->ca32_export.ex32_anon_uid);
- err |= __get_user(karg->ca_export.ex_anon_gid,
- &arg32->ca32_export.ex32_anon_gid);
- SET_UID(karg->ca_export.ex_anon_uid, karg->ca_export.ex_anon_uid);
- SET_GID(karg->ca_export.ex_anon_gid, karg->ca_export.ex_anon_gid);
- return err;
-}
-
-
-static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfd.gd_addr,
- &arg32->ca32_getfd.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfd.gd_path,
- &arg32->ca32_getfd.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= get_user(karg->ca_getfd.gd_version,
- &arg32->ca32_getfd.gd32_version);
- return err;
-}
-
-static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
-{
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfs.gd_addr,
- &arg32->ca32_getfs.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfs.gd_path,
- &arg32->ca32_getfs.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= get_user(karg->ca_getfs.gd_maxlen,
- &arg32->ca32_getfs.gd32_maxlen);
- return err;
-}
-
-/* This really doesn't need translations, we are only passing
- * back a union which contains opaque nfs file handle data.
- */
-static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
-{
- return copy_to_user(res32, kres, sizeof(*res32)) ? -EFAULT : 0;
-}
-
-long asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
-{
- struct nfsctl_arg *karg = NULL;
- union nfsctl_res *kres = NULL;
- mm_segment_t oldfs;
- int err;
-
- karg = kmalloc(sizeof(*karg), GFP_USER);
- if(!karg)
- return -ENOMEM;
- if(res32) {
- kres = kmalloc(sizeof(*kres), GFP_USER);
- if(!kres) {
- kfree(karg);
- return -ENOMEM;
- }
- }
- switch(cmd) {
- case NFSCTL_SVC:
- err = nfs_svc32_trans(karg, arg32);
- break;
- case NFSCTL_ADDCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_DELCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_EXPORT:
- case NFSCTL_UNEXPORT:
- err = nfs_exp32_trans(karg, arg32);
- break;
- case NFSCTL_GETFD:
- err = nfs_getfd32_trans(karg, arg32);
- break;
- case NFSCTL_GETFS:
- err = nfs_getfs32_trans(karg, arg32);
- break;
- default:
- err = -EINVAL;
- break;
- }
- if(err)
- goto done;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_nfsservctl(cmd, karg, kres);
- set_fs(oldfs);
-
- if (err)
- goto done;
-
- if((cmd == NFSCTL_GETFD) ||
- (cmd == NFSCTL_GETFS))
- err = nfs_getfh32_res_trans(kres, res32);
-
-done:
- if(karg)
- kfree(karg);
- if(kres)
- kfree(kres);
- return err;
-}
-#else /* !NFSD */
-long asmlinkage sys32_nfsservctl(int cmd, void *notused, void *notused2)
-{
- return sys_ni_syscall();
-}
-#endif
-
long sys32_io_setup(unsigned nr_reqs, u32 *ctx32p)
{
long ret;
===== fs/compat.c 1.24 vs edited =====
--- 1.24/fs/compat.c Thu Apr 15 19:31:49 2004
+++ edited/fs/compat.c Thu Apr 15 17:37:01 2004
@@ -1399,3 +1399,242 @@
return ret;
}
+#if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
+/* Stuff for NFS server syscalls... */
+struct compat_nfsctl_svc {
+ u16 svc32_port;
+ s32 svc32_nthreads;
+};
+
+struct compat_nfsctl_client {
+ s8 cl32_ident[NFSCLNT_IDMAX+1];
+ s32 cl32_naddr;
+ struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
+ s32 cl32_fhkeytype;
+ s32 cl32_fhkeylen;
+ u8 cl32_fhkey[NFSCLNT_KEYMAX];
+};
+
+struct compat_nfsctl_export {
+ char ex32_client[NFSCLNT_IDMAX+1];
+ char ex32_path[NFS_MAXPATHLEN+1];
+ compat_dev_t ex32_dev;
+ compat_ino_t ex32_ino;
+ compat_int_t ex32_flags;
+ compat_uid_t ex32_anon_uid;
+ compat_gid_t ex32_anon_gid;
+};
+
+struct compat_nfsctl_fdparm {
+ struct sockaddr gd32_addr;
+ s8 gd32_path[NFS_MAXPATHLEN+1];
+ compat_int_t gd32_version;
+};
+
+struct compat_nfsctl_fsparm {
+ struct sockaddr gd32_addr;
+ s8 gd32_path[NFS_MAXPATHLEN+1];
+ compat_int_t gd32_maxlen;
+};
+
+struct compat_nfsctl_arg {
+ compat_int_t ca32_version; /* safeguard */
+ union {
+ struct compat_nfsctl_svc u32_svc;
+ struct compat_nfsctl_client u32_client;
+ struct compat_nfsctl_export u32_export;
+ struct compat_nfsctl_fdparm u32_getfd;
+ struct compat_nfsctl_fsparm u32_getfs;
+ } u;
+#define ca32_svc u.u32_svc
+#define ca32_client u.u32_client
+#define ca32_export u.u32_export
+#define ca32_getfd u.u32_getfd
+#define ca32_getfs u.u32_getfs
+};
+
+union compat_nfsctl_res {
+ __u8 cr32_getfh[NFS_FHSIZE];
+ struct knfsd_fh cr32_getfs;
+};
+
+static int compat_nfs_svc_trans(struct nfsctl_arg *karg, struct compat_nfsctl_arg *arg)
+{
+ int err;
+
+ err = access_ok(VERIFY_READ, &arg->ca32_svc, sizeof(arg->ca32_svc));
+ err |= get_user(karg->ca_version, &arg->ca32_version);
+ err |= __get_user(karg->ca_svc.svc_port, &arg->ca32_svc.svc32_port);
+ err |= __get_user(karg->ca_svc.svc_nthreads, &arg->ca32_svc.svc32_nthreads);
+ return (err) ? -EFAULT : 0;
+}
+
+static int compat_nfs_clnt_trans(struct nfsctl_arg *karg, struct compat_nfsctl_arg *arg)
+{
+ int err;
+
+ err = access_ok(VERIFY_READ, &arg->ca32_client, sizeof(arg->ca32_client));
+ err |= get_user(karg->ca_version, &arg->ca32_version);
+ err |= __copy_from_user(&karg->ca_client.cl_ident[0],
+ &arg->ca32_client.cl32_ident[0],
+ NFSCLNT_IDMAX);
+ err |= __get_user(karg->ca_client.cl_naddr, &arg->ca32_client.cl32_naddr);
+ err |= __copy_from_user(&karg->ca_client.cl_addrlist[0],
+ &arg->ca32_client.cl32_addrlist[0],
+ (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
+ err |= __get_user(karg->ca_client.cl_fhkeytype,
+ &arg->ca32_client.cl32_fhkeytype);
+ err |= __get_user(karg->ca_client.cl_fhkeylen,
+ &arg->ca32_client.cl32_fhkeylen);
+ err |= __copy_from_user(&karg->ca_client.cl_fhkey[0],
+ &arg->ca32_client.cl32_fhkey[0],
+ NFSCLNT_KEYMAX);
+
+ return (err) ? -EFAULT : 0;
+}
+
+static int compat_nfs_exp_trans(struct nfsctl_arg *karg, struct compat_nfsctl_arg *arg)
+{
+ int err;
+
+ err = access_ok(VERIFY_READ, &arg->ca32_export, sizeof(arg->ca32_export));
+ err |= get_user(karg->ca_version, &arg->ca32_version);
+ err |= __copy_from_user(&karg->ca_export.ex_client[0],
+ &arg->ca32_export.ex32_client[0],
+ NFSCLNT_IDMAX);
+ err |= __copy_from_user(&karg->ca_export.ex_path[0],
+ &arg->ca32_export.ex32_path[0],
+ NFS_MAXPATHLEN);
+ err |= __get_user(karg->ca_export.ex_dev,
+ &arg->ca32_export.ex32_dev);
+ err |= __get_user(karg->ca_export.ex_ino,
+ &arg->ca32_export.ex32_ino);
+ err |= __get_user(karg->ca_export.ex_flags,
+ &arg->ca32_export.ex32_flags);
+ err |= __get_user(karg->ca_export.ex_anon_uid,
+ &arg->ca32_export.ex32_anon_uid);
+ err |= __get_user(karg->ca_export.ex_anon_gid,
+ &arg->ca32_export.ex32_anon_gid);
+ SET_UID(karg->ca_export.ex_anon_uid, karg->ca_export.ex_anon_uid);
+ SET_GID(karg->ca_export.ex_anon_gid, karg->ca_export.ex_anon_gid);
+
+ return (err) ? -EFAULT : 0;
+}
+
+static int compat_nfs_getfd_trans(struct nfsctl_arg *karg, struct compat_nfsctl_arg *arg)
+{
+ int err;
+
+ err = access_ok(VERIFY_READ, &arg->ca32_getfd, sizeof(arg->ca32_getfd));
+ err |= get_user(karg->ca_version, &arg->ca32_version);
+ err |= __copy_from_user(&karg->ca_getfd.gd_addr,
+ &arg->ca32_getfd.gd32_addr,
+ (sizeof(struct sockaddr)));
+ err |= __copy_from_user(&karg->ca_getfd.gd_path,
+ &arg->ca32_getfd.gd32_path,
+ (NFS_MAXPATHLEN+1));
+ err |= __get_user(karg->ca_getfd.gd_version,
+ &arg->ca32_getfd.gd32_version);
+
+ return (err) ? -EFAULT : 0;
+}
+
+static int compat_nfs_getfs_trans(struct nfsctl_arg *karg, struct compat_nfsctl_arg *arg)
+{
+ int err;
+
+ err = access_ok(VERIFY_READ, &arg->ca32_getfs, sizeof(arg->ca32_getfs));
+ err |= get_user(karg->ca_version, &arg->ca32_version);
+ err |= __copy_from_user(&karg->ca_getfs.gd_addr,
+ &arg->ca32_getfs.gd32_addr,
+ (sizeof(struct sockaddr)));
+ err |= __copy_from_user(&karg->ca_getfs.gd_path,
+ &arg->ca32_getfs.gd32_path,
+ (NFS_MAXPATHLEN+1));
+ err |= __get_user(karg->ca_getfs.gd_maxlen,
+ &arg->ca32_getfs.gd32_maxlen);
+
+ return (err) ? -EFAULT : 0;
+}
+
+/* This really doesn't need translations, we are only passing
+ * back a union which contains opaque nfs file handle data.
+ */
+static int compat_nfs_getfh_res_trans(union nfsctl_res *kres, union compat_nfsctl_res *res)
+{
+ int err;
+
+ err = copy_to_user(res, kres, sizeof(*res));
+
+ return (err) ? -EFAULT : 0;
+}
+
+asmlinkage long compat_sys_nfsservctl(int cmd, struct compat_nfsctl_arg *arg,
+ union compat_nfsctl_res *res)
+{
+ struct nfsctl_arg *karg;
+ union nfsctl_res *kres;
+ mm_segment_t oldfs;
+ int err;
+
+ karg = kmalloc(sizeof(*karg), GFP_USER);
+ kres = kmalloc(sizeof(*kres), GFP_USER);
+ if(!karg || !kres) {
+ err = -ENOMEM;
+ goto done;
+ }
+
+ switch(cmd) {
+ case NFSCTL_SVC:
+ err = compat_nfs_svc_trans(karg, arg);
+ break;
+
+ case NFSCTL_ADDCLIENT:
+ err = compat_nfs_clnt_trans(karg, arg);
+ break;
+
+ case NFSCTL_DELCLIENT:
+ err = compat_nfs_clnt_trans(karg, arg);
+ break;
+
+ case NFSCTL_EXPORT:
+ case NFSCTL_UNEXPORT:
+ err = compat_nfs_exp_trans(karg, arg);
+ break;
+
+ case NFSCTL_GETFD:
+ err = compat_nfs_getfd_trans(karg, arg);
+ break;
+
+ case NFSCTL_GETFS:
+ err = compat_nfs_getfs_trans(karg, arg);
+ break;
+
+ default:
+ err = -EINVAL;
+ goto done;
+ }
+
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_nfsservctl(cmd, karg, kres);
+ set_fs(oldfs);
+
+ if (err)
+ goto done;
+
+ if((cmd == NFSCTL_GETFD) ||
+ (cmd == NFSCTL_GETFS))
+ err = compat_nfs_getfh_res_trans(kres, res);
+
+done:
+ kfree(karg);
+ kfree(kres);
+ return err;
+}
+#else /* !NFSD */
+long asmlinkage compat_sys_nfsservctl(int cmd, void *notused, void *notused2)
+{
+ return sys_ni_syscall();
+}
+#endif
^ permalink raw reply [flat|nested] 8+ messages in thread