[PATCH 01/59] CRED: Wrap task credential accesses in the IA64 arch

David Howells
2008-08-27T13:59:21Z

Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-ia64@vger.kernel.org
---

arch/ia64/kernel/mca_drv.c | 2 +-
arch/ia64/kernel/perfmon.c | 23 +++++++++++++----------
arch/ia64/kernel/signal.c | 4 ++--
3 files changed, 16 insertions(+), 13 deletions(-)

diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index fab1d21..f94aaa8 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -158,7 +158,7 @@ mca_handler_bh(unsigned long paddr, void *iip, unsigned long ipsr)
ia64_mlogbuf_dump();
printk(KERN_ERR "OS_MCA: process [cpu %d, pid: %d, uid: %d, "
"iip: %p, psr: 0x%lx,paddr: 0x%lx](%s) encounters MCA.\n",
- raw_smp_processor_id(), current->pid, current->uid,
+ raw_smp_processor_id(), current->pid, current_uid(),
iip, ipsr, paddr, current->comm);

spin_lock(&mca_bh_lock);
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index fc8f350..ffe6de0 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -2224,8 +2224,8 @@ pfm_alloc_file(pfm_context_t *ctx)
DPRINT(("new inode ino=%ld @%p\n", inode->i_ino, inode));

inode->i_mode = S_IFCHR|S_IRUGO;
- inode->i_uid = current->fsuid;
- inode->i_gid = current->fsgid;
+ inode->i_uid = current_fsuid();
+ inode->i_gid = current_fsgid();

sprintf(name, "[%lu]", inode->i_ino);
this.name = name;
@@ -2403,22 +2403,25 @@ error_kmem:
static int
pfm_bad_permissions(struct task_struct *task)
{
+ uid_t uid = current_uid();
+ gid_t gid = current_gid();
+
/* inspired by ptrace_attach() */
DPRINT(("cur: uid=%d gid=%d task: euid=%d suid=%d uid=%d egid=%d sgid=%d\n",
- current->uid,
- current->gid,
+ uid,
+ gid,
task->euid,
task->suid,
task->uid,
task->egid,
task->sgid));

- return ((current->uid != task->euid)
- || (current->uid != task->suid)
- || (current->uid != task->uid)
- || (current->gid != task->egid)
- || (current->gid != task->sgid)
- || (current->gid != task->gid)) && !capable(CAP_SYS_PTRACE);
+ return (uid != task->euid)
+ || (uid != task->suid)
+ || (uid != task->uid)
+ || (gid != task->egid)
+ || (gid != task->sgid)
+ || (gid != task->gid)) && !capable(CAP_SYS_PTRACE);
}

static int
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index 19c5a78..434e93e 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -228,7 +228,7 @@ ia64_rt_sigreturn (struct sigscratch *scr)
si.si_errno = 0;
si.si_code = SI_KERNEL;
si.si_pid = task_pid_vnr(current);
- si.si_uid = current->uid;
+ si.si_uid = current_uid();
si.si_addr = sc;
force_sig_info(SIGSEGV, &si, current);
return retval;
@@ -325,7 +325,7 @@ force_sigsegv_info (int sig, void __user *addr)
si.si_errno = 0;
si.si_code = SI_KERNEL;
si.si_pid = task_pid_vnr(current);
- si.si_uid = current->uid;
+ si.si_uid = current_uid();
si.si_addr = addr;
force_sig_info(SIGSEGV, &si, current);
return 0;