[PATCH 06/37] Security: Separate task security context from task_struct

David Howells
2008-02-08T17:04:48Z

Separate the task security context from task_struct. At this point, the
security data is temporarily embedded in the task_struct with two pointers
pointing to it.

Alpha needs further alteration as it refers to UID & GID in entry.S via asm
offsets.

Sparc needs further alteration as it refers to UID & GID in sclow.S via asm
offsets.

Signed-off-by: David Howells <dhowells@redhat.com>
---

arch/parisc/kernel/signal.c | 2
arch/powerpc/mm/fault.c | 2
arch/s390/hypfs/inode.c | 4 -
arch/s390/kernel/compat_linux.c | 28 ++--
arch/sparc64/kernel/sys_sparc32.c | 28 ++--
drivers/block/loop.c | 5 -
drivers/char/drm/drm_fops.c | 2
drivers/char/tty_audit.c | 5 -
drivers/connector/cn_proc.c | 8 +
drivers/media/video/cpia.c | 2
drivers/net/tun.c | 4 -
drivers/net/wan/sbni.c | 8 +
drivers/usb/core/devio.c | 8 +
fs/affs/super.c | 4 -
fs/autofs/inode.c | 4 -
fs/autofs4/inode.c | 4 -
fs/autofs4/waitq.c | 4 -
fs/binfmt_elf.c | 12 +-
fs/binfmt_elf_fdpic.c | 12 +-
fs/cifs/connect.c | 5 -
fs/cifs/ioctl.c | 2
fs/dquot.c | 3
fs/ecryptfs/messaging.c | 15 +-
fs/exec.c | 20 +--
fs/fat/inode.c | 4 -
fs/fcntl.c | 7 +
fs/file_table.c | 4 -
fs/fuse/dir.c | 12 +-
fs/hfs/super.c | 4 -
fs/hfsplus/options.c | 4 -
fs/hpfs/super.c | 4 -
fs/hugetlbfs/inode.c | 4 -
fs/inotify_user.c | 2
fs/ioprio.c | 12 +-
fs/namei.c | 6 +
fs/ncpfs/ioctl.c | 32 ++--
fs/nfsd/auth.c | 22 ++-
fs/nfsd/nfs4recover.c | 12 +-
fs/open.c | 22 +--
fs/proc/array.c | 16 +-
fs/proc/base.c | 16 +-
fs/proc/proc_sysctl.c | 4 -
fs/quota.c | 4 -
fs/smbfs/dir.c | 4 -
fs/smbfs/inode.c | 2
fs/smbfs/proc.c | 2
include/linux/init_task.h | 25 ++-
include/linux/sched.h | 80 ++++++++---
include/net/scm.h | 4 -
ipc/mqueue.c | 4 -
ipc/msg.c | 4 -
ipc/sem.c | 4 -
ipc/shm.c | 16 +-
ipc/util.c | 7 +
kernel/acct.c | 8 +
kernel/auditsc.c | 46 +++---
kernel/cgroup.c | 5 -
kernel/exit.c | 12 +-
kernel/fork.c | 24 ++-
kernel/futex.c | 8 +
kernel/futex_compat.c | 5 -
kernel/ptrace.c | 14 +-
kernel/sched.c | 11 +
kernel/signal.c | 26 ++-
kernel/sys.c | 278 +++++++++++++++++++++----------------
kernel/sysctl.c | 2
kernel/timer.c | 8 +
kernel/tsacct.c | 4 -
kernel/uid16.c | 28 ++--
kernel/user.c | 4 -
kernel/user_namespace.c | 2
mm/mempolicy.c | 7 +
mm/migrate.c | 7 +
mm/oom_kill.c | 2
net/ax25/af_ax25.c | 2
net/ax25/ax25_route.c | 2
net/core/dev.c | 2
net/core/scm.c | 10 +
net/ipv6/ip6_flowlabel.c | 2
net/netrom/af_netrom.c | 4 -
net/rose/af_rose.c | 4 -
net/sunrpc/auth.c | 4 -
net/unix/af_unix.c | 12 +-
security/commoncap.c | 125 +++++++++--------
security/dummy.c | 40 +++--
security/keys/keyctl.c | 25 ++-
security/keys/permission.c | 11 +
security/keys/process_keys.c | 76 +++++-----
security/keys/request_key.c | 13 +-
security/keys/request_key_auth.c | 12 +-
security/selinux/exports.c | 4 -
security/selinux/hooks.c | 111 +++++++--------
security/selinux/selinuxfs.c | 2
security/selinux/xfrm.c | 6 -
94 files changed, 828 insertions(+), 674 deletions(-)

diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 58fccc9..6639d9b 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -182,7 +182,7 @@ give_sigsegv:
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->act_as->uid;
si.si_addr = &frame->uc;
force_sig_info(SIGSEGV, &si, current);
return;
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 7b25107..fea0e5a 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -363,7 +363,7 @@ bad_area_nosemaphore:
&& printk_ratelimit())
printk(KERN_CRIT "kernel tried to execute NX-protected"
" page (%lx) - exploit attempt? (uid: %d)\n",
- address, current->uid);
+ address, current->act_as->uid);

return SIGSEGV;

diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 4b010ff..56b7df6 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -289,8 +289,8 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent)
if (!sbi)
return -ENOMEM;
mutex_init(&sbi->lock);
- sbi->uid = current->uid;
- sbi->gid = current->gid;
+ sbi->uid = current->act_as->uid;
+ sbi->gid = current->act_as->gid;
sb->s_fs_info = sbi;
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 50b85d0..d939699 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -149,9 +149,9 @@ asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user
{
int retval;

- if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
- !(retval = put_user(high2lowuid(current->euid), euid)))
- retval = put_user(high2lowuid(current->suid), suid);
+ if (!(retval = put_user(high2lowuid(current->sec->uid), ruid)) &&
+ !(retval = put_user(high2lowuid(current->sec->euid), euid)))
+ retval = put_user(high2lowuid(current->sec->suid), suid);

return retval;
}
@@ -166,9 +166,9 @@ asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user
{
int retval;

- if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
- !(retval = put_user(high2lowgid(current->egid), egid)))
- retval = put_user(high2lowgid(current->sgid), sgid);
+ if (!(retval = put_user(high2lowgid(current->sec->gid), rgid)) &&
+ !(retval = put_user(high2lowgid(current->sec->egid), egid)))
+ retval = put_user(high2lowgid(current->sec->sgid), sgid);

return retval;
}
@@ -218,20 +218,20 @@ asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
if (gidsetsize < 0)
return -EINVAL;

- get_group_info(current->group_info);
- i = current->group_info->ngroups;
+ get_group_info(current->sec->group_info);
+ i = current->sec->group_info->ngroups;
if (gidsetsize) {
if (i > gidsetsize) {
i = -EINVAL;
goto out;
}
- if (groups16_to_user(grouplist, current->group_info)) {
+ if (groups16_to_user(grouplist, current->sec->group_info)) {
i = -EFAULT;
goto out;
}
}
out:
- put_group_info(current->group_info);
+ put_group_info(current->sec->group_info);
return i;
}

@@ -262,22 +262,22 @@ asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)

asmlinkage long sys32_getuid16(void)
{
- return high2lowuid(current->uid);
+ return high2lowuid(current->sec->uid);
}

asmlinkage long sys32_geteuid16(void)
{
- return high2lowuid(current->euid);
+ return high2lowuid(current->sec->euid);
}

asmlinkage long sys32_getgid16(void)
{
- return high2lowgid(current->gid);
+ return high2lowgid(current->sec->gid);
}

asmlinkage long sys32_getegid16(void)
{
- return high2lowgid(current->egid);
+ return high2lowgid(current->sec->egid);
}

/* 32-bit timeval and related flotsam. */
diff --git a/arch/sparc64/kernel/sys_sparc32.c b/arch/sparc64/kernel/sys_sparc32.c
index 98c4688..28ddfb5 100644
--- a/arch/sparc64/kernel/sys_sparc32.c
+++ b/arch/sparc64/kernel/sys_sparc32.c
@@ -105,9 +105,9 @@ asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user
{
int retval;

- if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
- !(retval = put_user(high2lowuid(current->euid), euid)))
- retval = put_user(high2lowuid(current->suid), suid);
+ if (!(retval = put_user(high2lowuid(current->sec->uid), ruid)) &&
+ !(retval = put_user(high2lowuid(current->sec->euid), euid)))
+ retval = put_user(high2lowuid(current->sec->suid), suid);

return retval;
}
@@ -122,9 +122,9 @@ asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user
{
int retval;

- if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
- !(retval = put_user(high2lowgid(current->egid), egid)))
- retval = put_user(high2lowgid(current->sgid), sgid);
+ if (!(retval = put_user(high2lowgid(current->sec->gid), rgid)) &&
+ !(retval = put_user(high2lowgid(current->sec->egid), egid)))
+ retval = put_user(high2lowgid(current->sec->sgid), sgid);

return retval;
}
@@ -174,20 +174,20 @@ asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
if (gidsetsize < 0)
return -EINVAL;

- get_group_info(current->group_info);
- i = current->group_info->ngroups;
+ get_group_info(current->sec->group_info);
+ i = current->sec->group_info->ngroups;
if (gidsetsize) {
if (i > gidsetsize) {
i = -EINVAL;
goto out;
}
- if (groups16_to_user(grouplist, current->group_info)) {
+ if (groups16_to_user(grouplist, current->sec->group_info)) {
i = -EFAULT;
goto out;
}
}
out:
- put_group_info(current->group_info);
+ put_group_info(current->sec->group_info);
return i;
}

@@ -218,22 +218,22 @@ asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)

asmlinkage long sys32_getuid16(void)
{
- return high2lowuid(current->uid);
+ return high2lowuid(current->sec->uid);
}

asmlinkage long sys32_geteuid16(void)
{
- return high2lowuid(current->euid);
+ return high2lowuid(current->sec->euid);
}

asmlinkage long sys32_getgid16(void)
{
- return high2lowgid(current->gid);
+ return high2lowgid(current->sec->gid);
}

asmlinkage long sys32_getegid16(void)
{
- return high2lowgid(current->egid);
+ return high2lowgid(current->sec->egid);
}

/* 32-bit timeval and related flotsam. */
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 91ebb00..fc5caaf 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -928,7 +928,8 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
int err;
struct loop_func_table *xfer;

- if (lo->lo_encrypt_key_size && lo->lo_key_owner != current->uid &&
+ if (lo->lo_encrypt_key_size &&
+ lo->lo_key_owner != current->act_as->uid &&
!capable(CAP_SYS_ADMIN))
return -EPERM;
if (lo->lo_state != Lo_bound)
@@ -983,7 +984,7 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
if (info->lo_encrypt_key_size) {
memcpy(lo->lo_encrypt_key, info->lo_encrypt_key,
info->lo_encrypt_key_size);
- lo->lo_key_owner = current->uid;
+ lo->lo_key_owner = current->act_as->uid;
}

return 0;
diff --git a/drivers/char/drm/drm_fops.c b/drivers/char/drm/drm_fops.c
index 3992f73..1f8d0a7 100644
--- a/drivers/char/drm/drm_fops.c
+++ b/drivers/char/drm/drm_fops.c
@@ -243,7 +243,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
memset(priv, 0, sizeof(*priv));
filp->private_data = priv;
priv->filp = filp;
- priv->uid = current->euid;
+ priv->uid = current->act_as->euid;
priv->pid = task_pid_nr(current);
priv->minor = minor;
priv->head = drm_heads[minor];
diff --git a/drivers/char/tty_audit.c b/drivers/char/tty_audit.c
index bacded0..58d4639 100644
--- a/drivers/char/tty_audit.c
+++ b/drivers/char/tty_audit.c
@@ -87,8 +87,9 @@ static void tty_audit_buf_push(struct task_struct *tsk, uid_t loginuid,
char name[sizeof(tsk->comm)];

audit_log_format(ab, "tty pid=%u uid=%u auid=%u ses=%u "
- "major=%d minor=%d comm=", tsk->pid, tsk->uid,
- loginuid, sessionid, buf->major, buf->minor);
+ "major=%d minor=%d comm=",
+ tsk->pid, tsk->sec->uid, loginuid, sessionid,
+ buf->major, buf->minor);
get_task_comm(name, tsk);
audit_log_untrustedstring(ab, name);
audit_log_format(ab, " data=");
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c
index 5c9f67f..5a004dd 100644
--- a/drivers/connector/cn_proc.c
+++ b/drivers/connector/cn_proc.c
@@ -116,11 +116,11 @@ void proc_id_connector(struct task_struct *task, int which_id)
ev->event_data.id.process_pid = task->pid;
ev->event_data.id.process_tgid = task->tgid;
if (which_id == PROC_EVENT_UID) {
- ev->event_data.id.r.ruid = task->uid;
- ev->event_data.id.e.euid = task->euid;
+ ev->event_data.id.r.ruid = task->act_as->uid;
+ ev->event_data.id.e.euid = task->act_as->euid;
} else if (which_id == PROC_EVENT_GID) {
- ev->event_data.id.r.rgid = task->gid;
- ev->event_data.id.e.egid = task->egid;
+ ev->event_data.id.r.rgid = task->act_as->gid;
+ ev->event_data.id.e.egid = task->act_as->egid;
} else
return;
get_seq(&msg->seq, &ev->cpu);
diff --git a/drivers/media/video/cpia.c b/drivers/media/video/cpia.c
index 7c630f5..5b178ab 100644
--- a/drivers/media/video/cpia.c
+++ b/drivers/media/video/cpia.c
@@ -3202,7 +3202,7 @@ static int cpia_open(struct inode *inode, struct file *file)

/* Set ownership of /proc/cpia/videoX to current user */
if(cam->proc_entry)
- cam->proc_entry->uid = current->uid;
+ cam->proc_entry->uid = current->act_as->uid;

/* set mark for loading first frame uncompressed */
cam->first_frame = 1;
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 038c1ef..2b63957 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -463,9 +463,9 @@ static int tun_set_iff(struct file *file, struct ifreq *ifr)

/* Check permissions */
if (((tun->owner != -1 &&
- current->euid != tun->owner) ||
+ current->act_as->euid != tun->owner) ||
(tun->group != -1 &&
- current->egid != tun->group)) &&
+ current->act_as->egid != tun->group)) &&
!capable(CAP_NET_ADMIN))
return -EPERM;
}
diff --git a/drivers/net/wan/sbni.c b/drivers/net/wan/sbni.c
index 15d5c58..1b054c5 100644
--- a/drivers/net/wan/sbni.c
+++ b/drivers/net/wan/sbni.c
@@ -1317,7 +1317,7 @@ sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd )
break;

case SIOCDEVRESINSTATS :
- if( current->euid != 0 ) /* root only */
+ if (current->act_as->euid != 0) /* root only */
return -EPERM;
memset( &nl->in_stats, 0, sizeof(struct sbni_in_stats) );
break;
@@ -1334,7 +1334,7 @@ sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd )
break;

case SIOCDEVSHWSTATE :
- if( current->euid != 0 ) /* root only */
+ if (current->act_as->euid != 0) /* root only */
return -EPERM;

spin_lock( &nl->lock );
@@ -1355,7 +1355,7 @@ sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd )
#ifdef CONFIG_SBNI_MULTILINE

case SIOCDEVENSLAVE :
- if( current->euid != 0 ) /* root only */
+ if (current->act_as->euid != 0) /* root only */
return -EPERM;

if (copy_from_user( slave_name, ifr->ifr_data, sizeof slave_name ))
@@ -1370,7 +1370,7 @@ sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd )
return enslave( dev, slave_dev );

case SIOCDEVEMANSIPATE :
- if( current->euid != 0 ) /* root only */
+ if (current->act_as->euid != 0) /* root only */
return -EPERM;

return emancipate( dev );
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index ae94176..1b0f54a 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -599,8 +599,8 @@ static int usbdev_open(struct inode *inode, struct file *file)
init_waitqueue_head(&ps->wait);
ps->discsignr = 0;
ps->disc_pid = get_pid(task_pid(current));
- ps->disc_uid = current->uid;
- ps->disc_euid = current->euid;
+ ps->disc_uid = current->sec->uid;
+ ps->disc_euid = current->sec->euid;
ps->disccontext = NULL;
ps->ifclaimed = 0;
security_task_getsecid(current, &ps->secid);
@@ -1130,8 +1130,8 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
as->signr = uurb->signr;
as->ifnum = ifnum;
as->pid = get_pid(task_pid(current));
- as->uid = current->uid;
- as->euid = current->euid;
+ as->uid = current->sec->uid;
+ as->euid = current->sec->euid;
security_task_getsecid(current, &as->secid);
if (!is_in) {
if (copy_from_user(as->urb->transfer_buffer, uurb->buffer,
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 3c45d49..902e4e9 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -158,8 +158,8 @@ parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s

/* Fill in defaults */

- *uid = current->uid;
- *gid = current->gid;
+ *uid = current->sec->uid;
+ *gid = current->sec->gid;
*reserved = 2;
*root = -1;
*blocksize = -1;
diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index 708bdb8..c1063de 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -75,8 +75,8 @@ static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
substring_t args[MAX_OPT_ARGS];
int option;

- *uid = current->uid;
- *gid = current->gid;
+ *uid = current->sec->uid;
+ *gid = current->sec->gid;
*pgrp = task_pgrp_nr(current);

*minproto = *maxproto = AUTOFS_PROTO_VERSION;
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 7f05d6c..fac6121 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -224,8 +224,8 @@ static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
substring_t args[MAX_OPT_ARGS];
int option;

- *uid = current->uid;
- *gid = current->gid;
+ *uid = current->sec->uid;
+ *gid = current->sec->gid;
*pgrp = task_pgrp_nr(current);

*minproto = AUTOFS_MIN_PROTO_VERSION;
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 1fe28e4..f41f5b7 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -294,8 +294,8 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
wq->len = len;
wq->dev = autofs4_get_dev(sbi);
wq->ino = autofs4_get_ino(sbi);
- wq->uid = current->uid;
- wq->gid = current->gid;
+ wq->uid = current->sec->uid;
+ wq->gid = current->sec->gid;
wq->pid = current->pid;
wq->tgid = current->tgid;
wq->status = -EINTR; /* Status return if interrupted */
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 111771d..fed9bc6 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -201,10 +201,10 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
NEW_AUX_ENT(AT_BASE, interp_load_addr);
NEW_AUX_ENT(AT_FLAGS, 0);
NEW_AUX_ENT(AT_ENTRY, exec->e_entry);
- NEW_AUX_ENT(AT_UID, tsk->uid);
- NEW_AUX_ENT(AT_EUID, tsk->euid);
- NEW_AUX_ENT(AT_GID, tsk->gid);
- NEW_AUX_ENT(AT_EGID, tsk->egid);
+ NEW_AUX_ENT(AT_UID, tsk->sec->uid);
+ NEW_AUX_ENT(AT_EUID, tsk->sec->euid);
+ NEW_AUX_ENT(AT_GID, tsk->sec->gid);
+ NEW_AUX_ENT(AT_EGID, tsk->sec->egid);
NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm));
if (k_platform) {
NEW_AUX_ENT(AT_PLATFORM,
@@ -1502,8 +1502,8 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
psinfo->pr_zomb = psinfo->pr_sname == 'Z';
psinfo->pr_nice = task_nice(p);
psinfo->pr_flag = p->flags;
- SET_UID(psinfo->pr_uid, p->uid);
- SET_GID(psinfo->pr_gid, p->gid);
+ SET_UID(psinfo->pr_uid, p->sec->uid);
+ SET_GID(psinfo->pr_gid, p->sec->gid);
strncpy(psinfo->pr_fname, p->comm, sizeof(psinfo->pr_fname));

return 0;
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 32649f2..0ebb7eb 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -585,10 +585,10 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm,
NEW_AUX_ENT( 6, AT_BASE, interp_params->elfhdr_addr);
NEW_AUX_ENT( 7, AT_FLAGS, 0);
NEW_AUX_ENT( 8, AT_ENTRY, exec_params->entry_addr);
- NEW_AUX_ENT( 9, AT_UID, (elf_addr_t) current->uid);
- NEW_AUX_ENT(10, AT_EUID, (elf_addr_t) current->euid);
- NEW_AUX_ENT(11, AT_GID, (elf_addr_t) current->gid);
- NEW_AUX_ENT(12, AT_EGID, (elf_addr_t) current->egid);
+ NEW_AUX_ENT( 9, AT_UID, (elf_addr_t) current->sec->uid);
+ NEW_AUX_ENT(10, AT_EUID, (elf_addr_t) current->sec->euid);
+ NEW_AUX_ENT(11, AT_GID, (elf_addr_t) current->sec->gid);
+ NEW_AUX_ENT(12, AT_EGID, (elf_addr_t) current->sec->egid);

#ifdef ARCH_DLINFO
/* ARCH_DLINFO must come last so platform specific code can enforce
@@ -1402,8 +1402,8 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
psinfo->pr_zomb = psinfo->pr_sname == 'Z';
psinfo->pr_nice = task_nice(p);
psinfo->pr_flag = p->flags;
- SET_UID(psinfo->pr_uid, p->uid);
- SET_GID(psinfo->pr_gid, p->gid);
+ SET_UID(psinfo->pr_uid, p->sec->uid);
+ SET_GID(psinfo->pr_gid, p->sec->gid);
strncpy(psinfo->pr_fname, p->comm, sizeof(psinfo->pr_fname));

return 0;
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 65d0ba7..5fcd5e0 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -818,8 +818,9 @@ cifs_parse_mount_options(char *options, const char *devname,
/* null target name indicates to use *SMBSERVR default called name
if we end up sending RFC1001 session initialize */
vol->target_rfc1001_name[0] = 0;
- vol->linux_uid = current->uid; /* current->euid instead? */
- vol->linux_gid = current->gid;
+ vol->linux_uid = current->sec->uid; /* use current->act_as->euid
+ * instead? */
+ vol->linux_gid = current->sec->gid;
vol->dir_mode = S_IRWXUGO;
/* 2767 perms indicate mandatory locking support */
vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP);
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index d24fe68..bf61a78 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -65,7 +65,7 @@ int cifs_ioctl (struct inode *inode, struct file *filep,
switch (command) {
case CIFS_IOC_CHECKUMOUNT:
cFYI(1, ("User unmount attempted"));
- if (cifs_sb->mnt_uid == current->uid)
+ if (cifs_sb->mnt_uid == current->sec->uid)
rc = 0;
else {
rc = -EACCES;
diff --git a/fs/dquot.c b/fs/dquot.c
index bd1f666..3e36b99 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -960,7 +960,8 @@ static void send_warning(const struct dquot *dquot, const char warntype)
MINOR(dquot->dq_sb->s_dev));
if (ret)
goto attr_err_out;
- ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current->user->uid);
+ ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID,
+ current->act_as->user->uid);
if (ret)
goto attr_err_out;
genlmsg_end(skb, msg_head);
diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c
index 9cc2aec..d035a5f 100644
--- a/fs/ecryptfs/messaging.c
+++ b/fs/ecryptfs/messaging.c
@@ -264,26 +264,27 @@ int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t uid,
}
msg_ctx = &ecryptfs_msg_ctx_arr[msg->index];
mutex_lock(&msg_ctx->mux);
- if (ecryptfs_find_daemon_id(msg_ctx->task->euid, &id)) {
+ if (ecryptfs_find_daemon_id(msg_ctx->task->sec->euid, &id)) {
rc = -EBADMSG;
ecryptfs_printk(KERN_WARNING, "User [%d] received a "
"message response from process [%d] but does "
"not have a registered daemon\n",
- msg_ctx->task->euid, pid);
+ msg_ctx->task->sec->euid, pid);
goto wake_up;
}
- if (msg_ctx->task->euid != uid) {
+ if (msg_ctx->task->sec->euid != uid) {
rc = -EBADMSG;
ecryptfs_printk(KERN_WARNING, "Received message from user "
"[%d]; expected message from user [%d]\n",
- uid, msg_ctx->task->euid);
+ uid, msg_ctx->task->sec->euid);
goto unlock;
}
if (id->pid != pid) {
rc = -EBADMSG;
ecryptfs_printk(KERN_ERR, "User [%d] received a "
"message response from an unrecognized "
- "process [%d]\n", msg_ctx->task->euid, pid);
+ "process [%d]\n",
+ msg_ctx->task->sec->euid, pid);
goto unlock;
}
if (msg_ctx->state != ECRYPTFS_MSG_CTX_STATE_PENDING) {
@@ -331,11 +332,11 @@ int ecryptfs_send_message(unsigned int transport, char *data, int data_len,
int rc;

mutex_lock(&ecryptfs_daemon_id_hash_mux);
- if (ecryptfs_find_daemon_id(current->euid, &id)) {
+ if (ecryptfs_find_daemon_id(current->act_as->euid, &id)) {
mutex_unlock(&ecryptfs_daemon_id_hash_mux);
rc = -ENOTCONN;
ecryptfs_printk(KERN_ERR, "User [%d] does not have a daemon "
- "registered\n", current->euid);
+ "registered\n", current->sec->euid);
goto out;
}
mutex_unlock(&ecryptfs_daemon_id_hash_mux);
diff --git a/fs/exec.c b/fs/exec.c
index 2516cb0..c09a2d9 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -996,7 +996,8 @@ int flush_old_exec(struct linux_binprm * bprm)

current->sas_ss_sp = current->sas_ss_size = 0;

- if (current->euid == current->uid && current->egid == current->gid)
+ if (current->sec->euid == current->sec->uid &&
+ current->sec->egid == current->sec->gid)
set_dumpable(current->mm, 1);
else
set_dumpable(current->mm, suid_dumpable);
@@ -1023,7 +1024,8 @@ int flush_old_exec(struct linux_binprm * bprm)
*/
current->mm->task_size = TASK_SIZE;

- if (bprm->e_uid != current->euid || bprm->e_gid != current->egid) {
+ if (bprm->e_uid != current->sec->euid ||
+ bprm->e_gid != current->sec->egid) {
suid_keys(current);
set_dumpable(current->mm, suid_dumpable);
current->pdeath_signal = 0;
@@ -1065,8 +1067,8 @@ int prepare_binprm(struct linux_binprm *bprm)
if (bprm->file->f_op == NULL)
return -EACCES;

- bprm->e_uid = current->euid;
- bprm->e_gid = current->egid;
+ bprm->e_uid = current->sec->euid;
+ bprm->e_gid = current->sec->egid;

if(!(bprm->file->f_path.mnt->mnt_flags & MNT_NOSUID)) {
/* Set-uid? */
@@ -1119,7 +1121,7 @@ void compute_creds(struct linux_binprm *bprm)
{
int unsafe;

- if (bprm->e_uid != current->uid) {
+ if (bprm->e_uid != current->sec->uid) {
suid_keys(current);
current->pdeath_signal = 0;
}
@@ -1437,7 +1439,7 @@ static int format_corename(char *corename, const char *pattern, long signr)
/* uid */
case 'u':
rc = snprintf(out_ptr, out_end - out_ptr,
- "%d", current->uid);
+ "%d", current->sec->uid);
if (rc > out_end - out_ptr)
goto out;
out_ptr += rc;
@@ -1445,7 +1447,7 @@ static int format_corename(char *corename, const char *pattern, long signr)
/* gid */
case 'g':
rc = snprintf(out_ptr, out_end - out_ptr,
- "%d", current->gid);
+ "%d", current->sec->gid);
if (rc > out_end - out_ptr)
goto out;
out_ptr += rc;
@@ -1703,7 +1705,7 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
*/
if (get_dumpable(mm) == 2) { /* Setuid core dump mode */
flag = O_EXCL; /* Stop rewrite attacks */
- current->fsuid = 0; /* Dump root private */
+ current->act_as->fsuid = 0; /* Dump root private */
}

retval = coredump_wait(exit_code);
@@ -1799,7 +1801,7 @@ fail_unlock:
if (helper_argv)
argv_free(helper_argv);

- current->fsuid = fsuid;
+ current->act_as->fsuid = fsuid;
complete_all(&mm->core_done);
fail:
return retval;
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 085269e..29097fb 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -932,8 +932,8 @@ static int parse_options(char *options, int is_vfat, int silent, int *debug,

opts->isvfat = is_vfat;

- opts->fs_uid = current->uid;
- opts->fs_gid = current->gid;
+ opts->fs_uid = current->sec->uid;
+ opts->fs_gid = current->sec->gid;
opts->fs_fmask = opts->fs_dmask = current->fs->umask;
opts->codepage = fat_default_codepage;
opts->iocharset = fat_default_iocharset;
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 8685263..35d8f74 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -276,7 +276,8 @@ int __f_setown(struct file *filp, struct pid *pid, enum pid_type type,
if (err)
return err;

- f_modown(filp, pid, type, current->uid, current->euid, force);
+ f_modown(filp, pid, type, current->sec->uid, current->act_as->euid,
+ force);
return 0;
}
EXPORT_SYMBOL(__f_setown);
@@ -461,8 +462,8 @@ static inline int sigio_perm(struct task_struct *p,
struct fown_struct *fown, int sig)
{
return (((fown->euid == 0) ||
- (fown->euid == p->suid) || (fown->euid == p->uid) ||
- (fown->uid == p->suid) || (fown->uid == p->uid)) &&
+ (fown->euid == p->sec->suid) || (fown->euid == p->sec->uid) ||
+ (fown->uid == p->sec->suid) || (fown->uid == p->sec->uid)) &&
!security_file_send_sigiotask(p, fown, sig));
}

diff --git a/fs/file_table.c b/fs/file_table.c
index 664e3f2..e559b50 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -114,8 +114,8 @@ struct file *get_empty_filp(void)
INIT_LIST_HEAD(&f->f_u.fu_list);
atomic_set(&f->f_count, 1);
rwlock_init(&f->f_owner.lock);
- f->f_uid = tsk->fsuid;
- f->f_gid = tsk->fsgid;
+ f->f_uid = tsk->act_as->fsuid;
+ f->f_gid = tsk->act_as->fsgid;
eventpoll_init_file(f);
/* f->f_version: 0 */
return f;
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 7fb514b..565bfa9 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -831,12 +831,12 @@ int fuse_allow_task(struct fuse_conn *fc, struct task_struct *task)
if (fc->flags & FUSE_ALLOW_OTHER)
return 1;

- if (task->euid == fc->user_id &&
- task->suid == fc->user_id &&
- task->uid == fc->user_id &&
- task->egid == fc->group_id &&
- task->sgid == fc->group_id &&
- task->gid == fc->group_id)
+ if (task->sec->euid == fc->user_id &&
+ task->sec->suid == fc->user_id &&
+ task->sec->uid == fc->user_id &&
+ task->sec->egid == fc->group_id &&
+ task->sec->sgid == fc->group_id &&
+ task->sec->gid == fc->group_id)
return 1;

return 0;
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index 32de44e..4c2f0c1 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -210,8 +210,8 @@ static int parse_options(char *options, struct hfs_sb_info *hsb)
int tmp, token;

/* initialize the sb with defaults */
- hsb->s_uid = current->uid;
- hsb->s_gid = current->gid;
+ hsb->s_uid = current->sec->uid;
+ hsb->s_gid = current->sec->gid;
hsb->s_file_umask = 0133;
hsb->s_dir_umask = 0022;
hsb->s_type = hsb->s_creator = cpu_to_be32(0x3f3f3f3f); /* == '????' */
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index dc64fac..fa5e015 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -49,8 +49,8 @@ void hfsplus_fill_defaults(struct hfsplus_sb_info *opts)
opts->creator = HFSPLUS_DEF_CR_TYPE;
opts->type = HFSPLUS_DEF_CR_TYPE;
opts->umask = current->fs->umask;
- opts->uid = current->uid;
- opts->gid = current->gid;
+ opts->uid = current->sec->uid;
+ opts->gid = current->sec->gid;
opts->part = -1;
opts->session = -1;
}
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 00971d9..cf4c6b5 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -464,8 +464,8 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)

init_MUTEX(&sbi->hpfs_creation_de);

- uid = current->uid;
- gid = current->gid;
+ uid = current->sec->uid;
+ gid = current->sec->gid;
umask = current->fs->umask;
lowercase = 0;
conv = CONV_BINARY;
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 8a931bf..1696891 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -921,7 +921,7 @@ struct file *hugetlb_file_setup(const char *name, size_t size)
if (!can_do_hugetlb_shm())
return ERR_PTR(-EPERM);

- if (!user_shm_lock(size, current->user))
+ if (!user_shm_lock(size, current->sec->user))
return ERR_PTR(-ENOMEM);

root = hugetlbfs_vfsmount->mnt_root;
@@ -960,7 +960,7 @@ out_inode:
out_dentry:
dput(dentry);
out_shm_unlock:
- user_shm_unlock(size, current->user);
+ user_shm_unlock(size, current->sec->user);
return ERR_PTR(error);
}

diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index a336c97..f1cecf9 100644
--- a/fs/inotify_user.c
+++ b/fs/inotify_user.c
@@ -584,7 +584,7 @@ asmlinkage long sys_inotify_init(void)
goto out_put_fd;
}

- user = get_uid(current->user);
+ user = get_uid(current->sec->user);
if (unlikely(atomic_read(&user->inotify_devs) >=
inotify_max_user_instances)) {
ret = -EMFILE;
diff --git a/fs/ioprio.c b/fs/ioprio.c
index c4a1c3c..befcda5 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -32,8 +32,8 @@ static int set_task_ioprio(struct task_struct *task, int ioprio)
int err;
struct io_context *ioc;

- if (task->uid != current->euid &&
- task->uid != current->uid && !capable(CAP_SYS_NICE))
+ if (task->sec->uid != current->act_as->euid &&
+ task->sec->uid != current->act_as->uid && !capable(CAP_SYS_NICE))
return -EPERM;

err = security_task_setioprio(task, ioprio);
@@ -123,7 +123,7 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
break;
case IOPRIO_WHO_USER:
if (!who)
- user = current->user;
+ user = current->sec->user;
else
user = find_user(who);

@@ -131,7 +131,7 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
break;

do_each_thread(g, p) {
- if (p->uid != who)
+ if (p->sec->uid != who)
continue;
ret = set_task_ioprio(p, ioprio);
if (ret)
@@ -216,7 +216,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
break;
case IOPRIO_WHO_USER:
if (!who)
- user = current->user;
+ user = current->sec->user;
else
user = find_user(who);

@@ -224,7 +224,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
break;

do_each_thread(g, p) {
- if (p->uid != user->uid)
+ if (p->sec->uid != user->uid)
continue;
tmpio = get_task_ioprio(p);
if (tmpio < 0)
diff --git a/fs/namei.c b/fs/namei.c
index 21b944f..4db2257 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1433,11 +1433,13 @@ int fastcall __user_walk(const char __user *name, unsigned flags, struct nameida
*/
static inline int check_sticky(struct inode *dir, struct inode *inode)
{
+ uid_t fsuid = current->act_as->fsuid;
+
if (!(dir->i_mode & S_ISVTX))
return 0;
- if (inode->i_uid == current_fsuid())
+ if (inode->i_uid == fsuid)
return 0;
- if (dir->i_uid == current_fsuid())
+ if (dir->i_uid == fsuid)
return 0;
return !capable(CAP_FOWNER);
}
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index c67b4bd..5f1adaf 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -40,7 +40,7 @@ ncp_get_fs_info(struct ncp_server * server, struct file *file,
struct ncp_fs_info info;

if ((file_permission(file, MAY_WRITE) != 0)
- && (current->uid != server->m.mounted_uid)) {
+ && (current->act_as->uid != server->m.mounted_uid)) {
return -EACCES;
}
if (copy_from_user(&info, arg, sizeof(info)))
@@ -70,7 +70,7 @@ ncp_get_fs_info_v2(struct ncp_server * server, struct file *file,
struct ncp_fs_info_v2 info2;

if ((file_permission(file, MAY_WRITE) != 0)
- && (current->uid != server->m.mounted_uid)) {
+ && (current->act_as->uid != server->m.mounted_uid)) {
return -EACCES;
}
if (copy_from_user(&info2, arg, sizeof(info2)))
@@ -141,7 +141,7 @@ ncp_get_compat_fs_info_v2(struct ncp_server * server, struct file *file,
struct compat_ncp_fs_info_v2 info2;

if ((file_permission(file, MAY_WRITE) != 0)
- && (current->uid != server->m.mounted_uid)) {
+ && (current->act_as->uid != server->m.mounted_uid)) {
return -EACCES;
}
if (copy_from_user(&info2, arg, sizeof(info2)))
@@ -276,7 +276,7 @@ int ncp_ioctl(struct inode *inode, struct file *filp,
#endif
case NCP_IOC_NCPREQUEST:
if ((file_permission(filp, MAY_WRITE) != 0)
- && (current->uid != server->m.mounted_uid)) {
+ && (current->act_as->uid != server->m.mounted_uid)) {
return -EACCES;
}
#ifdef CONFIG_COMPAT
@@ -356,7 +356,7 @@ int ncp_ioctl(struct inode *inode, struct file *filp,
case NCP_IOC_GETMOUNTUID32:
case NCP_IOC_GETMOUNTUID64:
if ((file_permission(filp, MAY_READ) != 0)
- && (current->uid != server->m.mounted_uid)) {
+ && (current->act_as->uid != server->m.mounted_uid)) {
return -EACCES;
}
if (cmd == NCP_IOC_GETMOUNTUID16) {
@@ -380,7 +380,7 @@ int ncp_ioctl(struct inode *inode, struct file *filp,
struct ncp_setroot_ioctl sr;

if ((file_permission(filp, MAY_READ) != 0)
- && (current->uid != server->m.mounted_uid))
+ && (current->act_as->uid != server->m.mounted_uid))
{
return -EACCES;
}
@@ -455,7 +455,7 @@ int ncp_ioctl(struct inode *inode, struct file *filp,
#ifdef CONFIG_NCPFS_PACKET_SIGNING
case NCP_IOC_SIGN_INIT:
if ((file_permission(filp, MAY_WRITE) != 0)
- && (current->uid != server->m.mounted_uid))
+ && (current->act_as->uid != server->m.mounted_uid))
{
return -EACCES;
}
@@ -478,7 +478,7 @@ int ncp_ioctl(struct inode *inode, struct file *filp,

case NCP_IOC_SIGN_WANTED:
if ((file_permission(filp, MAY_READ) != 0)
- && (current->uid != server->m.mounted_uid))
+ && (current->act_as->uid != server->m.mounted_uid))
{
return -EACCES;
}
@@ -491,7 +491,7 @@ int ncp_ioctl(struct inode *inode, struct file *filp,
int newstate;

if ((file_permission(filp, MAY_WRITE) != 0)
- && (current->uid != server->m.mounted_uid))
+ && (current->act_as->uid != server->m.mounted_uid))
{
return -EACCES;
}
@@ -512,7 +512,7 @@ int ncp_ioctl(struct inode *inode, struct file *filp,
#ifdef CONFIG_NCPFS_IOCTL_LOCKING
case NCP_IOC_LOCKUNLOCK:
if ((file_permission(filp, MAY_WRITE) != 0)
- && (current->uid != server->m.mounted_uid))
+ && (current->act_as->uid != server->m.mounted_uid))
{
return -EACCES;
}
@@ -585,7 +585,7 @@ outrel:

#ifdef CONFIG_COMPAT
case NCP_IOC_GETOBJECTNAME_32:
- if (current->uid != server->m.mounted_uid) {
+ if (current->act_as->uid != server->m.mounted_uid) {
return -EACCES;
}
{
@@ -610,7 +610,7 @@ outrel:
}
#endif
case NCP_IOC_GETOBJECTNAME:
- if (current->uid != server->m.mounted_uid) {
+ if (current->act_as->uid != server->m.mounted_uid) {
return -EACCES;
}
{
@@ -637,7 +637,7 @@ outrel:
case NCP_IOC_SETOBJECTNAME_32:
#endif
case NCP_IOC_SETOBJECTNAME:
- if (current->uid != server->m.mounted_uid) {
+ if (current->act_as->uid != server->m.mounted_uid) {
return -EACCES;
}
{
@@ -695,7 +695,7 @@ outrel:
case NCP_IOC_GETPRIVATEDATA_32:
#endif
case NCP_IOC_GETPRIVATEDATA:
- if (current->uid != server->m.mounted_uid) {
+ if (current->act_as->uid != server->m.mounted_uid) {
return -EACCES;
}
{
@@ -740,7 +740,7 @@ outrel:
case NCP_IOC_SETPRIVATEDATA_32:
#endif
case NCP_IOC_SETPRIVATEDATA:
- if (current->uid != server->m.mounted_uid) {
+ if (current->act_as->uid != server->m.mounted_uid) {
return -EACCES;
}
{
@@ -795,7 +795,7 @@ outrel:

case NCP_IOC_SETDENTRYTTL:
if ((file_permission(filp, MAY_WRITE) != 0) &&
- (current->uid != server->m.mounted_uid))
+ current->act_as->uid != server->m.mounted_uid)
return -EACCES;
{
u_int32_t user;
diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c
index d13403e..5586157 100644
--- a/fs/nfsd/auth.c
+++ b/fs/nfsd/auth.c
@@ -26,6 +26,7 @@ int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp)

int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
{
+ struct task_security *act_as = current->act_as;
struct svc_cred cred = rqstp->rq_cred;
int i;
int flags = nfsexp_flags(rqstp, exp);
@@ -54,25 +55,26 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
get_group_info(cred.cr_group_info);

if (cred.cr_uid != (uid_t) -1)
- current->fsuid = cred.cr_uid;
+ act_as->fsuid = cred.cr_uid;
else
- current->fsuid = exp->ex_anon_uid;
+ act_as->fsuid = exp->ex_anon_uid;
if (cred.cr_gid != (gid_t) -1)
- current->fsgid = cred.cr_gid;
+ act_as->fsgid = cred.cr_gid;
else
- current->fsgid = exp->ex_anon_gid;
+ act_as->fsgid = exp->ex_anon_gid;

if (!cred.cr_group_info)
return -ENOMEM;
- ret = set_current_groups(cred.cr_group_info);
+ ret = set_groups(act_as, cred.cr_group_info);
put_group_info(cred.cr_group_info);
if ((cred.cr_uid)) {
- current->cap_effective =
- cap_drop_nfsd_set(current->cap_effective);
+ act_as->cap_effective =
+ cap_drop_nfsd_set(act_as->cap_effective);
} else {
- current->cap_effective =
- cap_raise_nfsd_set(current->cap_effective,
- current->cap_permitted);
+ act_as->cap_effective =
+ cap_raise_nfsd_set(act_as->cap_effective,
+ act_as->cap_permitted);
}
return ret;
}
+
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 1602cd0..bf0217a 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -56,17 +56,17 @@ static int rec_dir_init = 0;
static void
nfs4_save_user(uid_t *saveuid, gid_t *savegid)
{
- *saveuid = current->fsuid;
- *savegid = current->fsgid;
- current->fsuid = 0;
- current->fsgid = 0;
+ *saveuid = current->act_as->fsuid;
+ *savegid = current->act_as->fsgid;
+ current->act_as->fsuid = 0;
+ current->act_as->fsgid = 0;
}

static void
nfs4_reset_user(uid_t saveuid, gid_t savegid)
{
- current->fsuid = saveuid;
- current->fsgid = savegid;
+ current->act_as->fsuid = saveuid;
+ current->act_as->fsgid = savegid;
}

static void
diff --git a/fs/open.c b/fs/open.c
index 4932b4d..6d7a29c 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -428,12 +428,12 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
if (mode & ~S_IRWXO) /* where's F_OK, X_OK, W_OK, R_OK? */
return -EINVAL;

- old_fsuid = current->fsuid;
- old_fsgid = current->fsgid;
- old_cap = current->cap_effective;
+ old_fsuid = current->act_as->fsuid;
+ old_fsgid = current->act_as->fsgid;
+ old_cap = current->act_as->cap_effective;

- current->fsuid = current->uid;
- current->fsgid = current->gid;
+ current->act_as->fsuid = current->act_as->uid;
+ current->act_as->fsgid = current->act_as->gid;

/*
* Clear the capabilities if we switch to a non-root user
@@ -443,10 +443,10 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
* value below. We should hold task_capabilities_lock,
* but we cannot because user_path_walk can sleep.
*/
- if (current->uid)
- cap_clear(current->cap_effective);
+ if (current->act_as->uid)
+ cap_clear(current->act_as->cap_effective);
else
- current->cap_effective = current->cap_permitted;
+ current->act_as->cap_effective = current->act_as->cap_permitted;

res = __user_walk_fd(dfd, filename, LOOKUP_FOLLOW|LOOKUP_ACCESS, &nd);
if (res)
@@ -464,9 +464,9 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
out_path_release:
path_release(&nd);
out:
- current->fsuid = old_fsuid;
- current->fsgid = old_fsgid;
- current->cap_effective = old_cap;
+ current->act_as->fsuid = old_fsuid;
+ current->act_as->fsgid = old_fsgid;
+ current->act_as->cap_effective = old_cap;

return res;
}
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 6ba2746..f923a3b 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -177,8 +177,8 @@ static inline char *task_state(struct task_struct *p, char *buffer)
task_tgid_nr_ns(p, ns),
task_pid_nr_ns(p, ns),
ppid, tpid,
- p->uid, p->euid, p->suid, p->fsuid,
- p->gid, p->egid, p->sgid, p->fsgid);
+ p->sec->uid, p->sec->euid, p->sec->suid, p->sec->fsuid,
+ p->sec->gid, p->sec->egid, p->sec->sgid, p->sec->fsgid);

task_lock(p);
if (p->files)
@@ -189,7 +189,7 @@ static inline char *task_state(struct task_struct *p, char *buffer)
fdt ? fdt->max_fds : 0);
rcu_read_unlock();

- group_info = p->group_info;
+ group_info = p->sec->group_info;
get_group_info(group_info);
task_unlock(p);

@@ -262,7 +262,7 @@ static inline char *task_sig(struct task_struct *p, char *buffer)
blocked = p->blocked;
collect_sigign_sigcatch(p, &ignored, &caught);
num_threads = atomic_read(&p->signal->count);
- qsize = atomic_read(&p->user->sigpending);
+ qsize = atomic_read(&p->sec->user->sigpending);
qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
unlock_task_sighand(p, &flags);
}
@@ -295,9 +295,11 @@ static char *render_cap_t(const char *header, kernel_cap_t *a, char *buffer)

static inline char *task_cap(struct task_struct *p, char *buffer)
{
- buffer = render_cap_t("CapInh:\t", &p->cap_inheritable, buffer);
- buffer = render_cap_t("CapPrm:\t", &p->cap_permitted, buffer);
- return render_cap_t("CapEff:\t", &p->cap_effective, buffer);
+ struct task_security *sec = p->sec;
+
+ buffer = render_cap_t("CapInh:\t", &sec->cap_inheritable, buffer);
+ buffer = render_cap_t("CapPrm:\t", &sec->cap_permitted, buffer);
+ return render_cap_t("CapEff:\t", &sec->cap_effective, buffer);
}

static inline char *task_context_switch_counts(struct task_struct *p,
diff --git a/fs/proc/base.c b/fs/proc/base.c
index c59852b..a5ab3f7 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1233,8 +1233,8 @@ static struct inode *proc_pid_make_inode(struct super_block * sb, struct task_st
inode->i_uid = 0;
inode->i_gid = 0;
if (task_dumpable(task)) {
- inode->i_uid = task->euid;
- inode->i_gid = task->egid;
+ inode->i_uid = task->sec->euid;
+ inode->i_gid = task->sec->egid;
}
security_task_to_inode(task, inode);

@@ -1259,8 +1259,8 @@ static int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat
if (task) {
if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
task_dumpable(task)) {
- stat->uid = task->euid;
- stat->gid = task->egid;
+ stat->uid = task->sec->euid;
+ stat->gid = task->sec->egid;
}
}
rcu_read_unlock();
@@ -1291,8 +1291,8 @@ static int pid_revalidate(struct dentry *dentry, struct nameidata *nd)
if (task) {
if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
task_dumpable(task)) {
- inode->i_uid = task->euid;
- inode->i_gid = task->egid;
+ inode->i_uid = task->sec->euid;
+ inode->i_gid = task->sec->egid;
} else {
inode->i_uid = 0;
inode->i_gid = 0;
@@ -1465,8 +1465,8 @@ static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
rcu_read_unlock();
put_files_struct(files);
if (task_dumpable(task)) {
- inode->i_uid = task->euid;
- inode->i_gid = task->egid;
+ inode->i_uid = task->sec->euid;
+ inode->i_gid = task->sec->egid;
} else {
inode->i_uid = 0;
inode->i_gid = 0;
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 4e57fcf..e4ddfdb 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -393,9 +393,9 @@ static int proc_sys_permission(struct inode *inode, int mask, struct nameidata *
error = -EACCES;
mode = inode->i_mode;

- if (current->euid == 0)
+ if (current->act_as->euid == 0)
mode >>= 6;
- else if (in_group_p(0))
+ else if (in_egroup_p(0))
mode >>= 3;

if ((mode & mask & (MAY_READ|MAY_WRITE|MAY_EXEC)) == mask)
diff --git a/fs/quota.c b/fs/quota.c
index 84f28dd..afde3cb 100644
--- a/fs/quota.c
+++ b/fs/quota.c
@@ -80,7 +80,7 @@ static int generic_quotactl_valid(struct super_block *sb, int type, int cmd, qid

/* Check privileges */
if (cmd == Q_GETQUOTA) {
- if (((type == USRQUOTA && current->euid != id) ||
+ if (((type == USRQUOTA && current->act_as->euid != id) ||
(type == GRPQUOTA && !in_egroup_p(id))) &&
!capable(CAP_SYS_ADMIN))
return -EPERM;
@@ -131,7 +131,7 @@ static int xqm_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t i

/* Check privileges */
if (cmd == Q_XGETQUOTA) {
- if (((type == XQM_USRQUOTA && current->euid != id) ||
+ if (((type == XQM_USRQUOTA && current->act_as->euid != id) ||
(type == XQM_GRPQUOTA && !in_egroup_p(id))) &&
!capable(CAP_SYS_ADMIN))
return -EPERM;
diff --git a/fs/smbfs/dir.c b/fs/smbfs/dir.c
index 48da4fa..53e03a3 100644
--- a/fs/smbfs/dir.c
+++ b/fs/smbfs/dir.c
@@ -667,8 +667,8 @@ smb_make_node(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)

attr.ia_valid = ATTR_MODE | ATTR_UID | ATTR_GID;
attr.ia_mode = mode;
- attr.ia_uid = current->euid;
- attr.ia_gid = current->egid;
+ attr.ia_uid = current->act_as->euid;
+ attr.ia_gid = current->act_as->egid;

if (!new_valid_dev(dev))
return -EINVAL;
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index 4e5c22c..6afce17 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -586,7 +586,7 @@ static int smb_fill_super(struct super_block *sb, void *raw_data, int silent)
if (parse_options(mnt, raw_data))
goto out_bad_option;
}
- mnt->mounted_uid = current->uid;
+ mnt->mounted_uid = current->act_as->uid;
smb_setcodepage(server, &mnt->codepage);

/*
diff --git a/fs/smbfs/proc.c b/fs/smbfs/proc.c
index d517a27..a55d9cd 100644
--- a/fs/smbfs/proc.c
+++ b/fs/smbfs/proc.c
@@ -865,7 +865,7 @@ smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt)
goto out;

error = -EACCES;
- if (current->uid != server->mnt->mounted_uid &&
+ if (current->act_as->uid != server->mnt->mounted_uid &&
!capable(CAP_SYS_ADMIN))
goto out;

diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 1f74e1d..a26c30e 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -133,6 +133,21 @@ extern struct group_info init_groups;
# define CAP_INIT_BSET CAP_INIT_EFF_SET
#endif

+extern struct task_security init_task_security;
+
+#define INIT_TASK_SECURITY(p) \
+{ \
+ .usage = ATOMIC_INIT(3), \
+ .keep_capabilities = 0, \
+ .cap_inheritable = CAP_INIT_INH_SET, \
+ .cap_permitted = CAP_FULL_SET, \
+ .cap_effective = CAP_INIT_EFF_SET, \
+ .cap_bset = CAP_INIT_BSET, \
+ .user = INIT_USER, \
+ .group_info = &init_groups, \
+ .lock = __SPIN_LOCK_UNLOCKED(p.lock), \
+}
+
/*
* INIT_TASK is used to set up the first task table, touch at
* your own risk!. Base=0, limit=0x1fffff (=2MB)
@@ -164,13 +179,9 @@ extern struct group_info init_groups;
.children = LIST_HEAD_INIT(tsk.children), \
.sibling = LIST_HEAD_INIT(tsk.sibling), \
.group_leader = &tsk, \
- .group_info = &init_groups, \
- .cap_effective = CAP_INIT_EFF_SET, \
- .cap_inheritable = CAP_INIT_INH_SET, \
- .cap_permitted = CAP_FULL_SET, \
- .cap_bset = CAP_INIT_BSET, \
- .keep_capabilities = 0, \
- .user = INIT_USER, \
+ .__temp_sec = INIT_TASK_SECURITY(tsk.__temp_sec), \
+ .sec = &tsk.__temp_sec, \
+ .act_as = &tsk.__temp_sec, \
.comm = "swapper", \
.thread = INIT_THREAD, \
.fs = &init_fs, \
diff --git a/include/linux/sched.h b/include/linux/sched.h
index fee9b56..33afa37 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -606,6 +606,64 @@ extern struct user_struct *find_user(uid_t);
extern struct user_struct root_user;
#define INIT_USER (&root_user)

+
+/*
+ * The security context of a task
+ *
+ * The parts of the context break down into two categories:
+ *
+ * (1) The objective context of a task. These parts are used when some other
+ * task is attempting to affect this one.
+ *
+ * (2) The subjective context. These details are used when the task is acting
+ * upon another object, be that a file, a task, a key or whatever.
+ *
+ * Note that some members of this structure belong to both categories - the
+ * LSM security pointer for instance.
+ *
+ * A task has two security pointers. task->sec points to the objective context
+ * that defines that task's actual details. The objective part of this context
+ * is used whenever that task is acted upon.
+ *
+ * task->act_as points to the subjective context that defines the details of
+ * how that task is going to act upon another object. This may be overridden
+ * temporarily to point to another security context, but normally points to the
+ * same context as task->sec.
+ */
+struct task_security {
+ atomic_t usage;
+ uid_t uid; /* real UID of the task */
+ gid_t gid; /* real GID of the task */
+ uid_t suid; /* saved UID of the task */
+ gid_t sgid; /* saved GID of the task */
+ uid_t euid; /* effective UID of the task */
+ gid_t egid; /* effective GID of the task */
+ uid_t fsuid; /* UID for VFS ops */
+ gid_t fsgid; /* GID for VFS ops */
+ unsigned keep_capabilities:1;
+ kernel_cap_t cap_inheritable; /* caps our children can inherit */
+ kernel_cap_t cap_permitted; /* caps we're permitted */
+ kernel_cap_t cap_effective; /* caps we can actually use */
+ kernel_cap_t cap_bset; /* ? */
+#ifdef CONFIG_KEYS
+ unsigned char jit_keyring; /* default keyring to attach requested
+ * keys to */
+ struct key *thread_keyring; /* keyring private to this thread */
+ struct key *request_key_auth; /* assumed request_key authority */
+#endif
+#ifdef CONFIG_SECURITY
+ void *security; /* subjective LSM security */
+#endif
+ struct user_struct *user; /* real user ID subscription */
+ struct group_info *group_info; /* supplementary groups for euid/fsgid */
+ spinlock_t lock; /* lock for pointer changes */
+};
+
+#define current_fsuid() (current->act_as->fsuid)
+#define current_fsgid() (current->act_as->fsgid)
+#define current_cap() (current->act_as->cap_effective)
+
+
struct backing_dev_info;
struct reclaim_state;

@@ -838,6 +896,7 @@ struct group_info {
extern struct group_info *groups_alloc(int gidsetsize);
extern void groups_free(struct group_info *group_info);
extern int set_current_groups(struct group_info *group_info);
+extern int set_groups(struct task_security *sec, struct group_info *group_info);
extern int groups_search(struct group_info *group_info, gid_t grp);
/* access the groups "array" with this macro */
#define GROUP_AT(gi, i) \
@@ -1096,17 +1155,10 @@ struct task_struct {
struct list_head cpu_timers[3];

/* process credentials */
- uid_t uid,euid,suid,fsuid;
- gid_t gid,egid,sgid,fsgid;
- struct group_info *group_info;
- kernel_cap_t cap_effective, cap_inheritable, cap_permitted, cap_bset;
- unsigned keep_capabilities:1;
- struct user_struct *user;
-#ifdef CONFIG_KEYS
- struct key *request_key_auth; /* assumed request_key authority */
- struct key *thread_keyring; /* keyring private to this thread */
- unsigned char jit_keyring; /* default keyring to attach requested keys to */
-#endif
+ struct task_security __temp_sec __deprecated; /* temporary security to be removed */
+ struct task_security *sec; /* actual/objective task security */
+ struct task_security *act_as; /* effective/subjective task security */
+
char comm[TASK_COMM_LEN]; /* executable name excluding path
- access with [gs]et_task_comm (which lock
it with task_lock())
@@ -1143,9 +1195,6 @@ struct task_struct {
int (*notifier)(void *priv);
void *notifier_data;
sigset_t *notifier_mask;
-#ifdef CONFIG_SECURITY
- void *security;
-#endif
struct audit_context *audit_context;
#ifdef CONFIG_AUDITSYSCALL
uid_t loginuid;
@@ -1264,9 +1313,6 @@ struct task_struct {
#endif
};

-#define current_fsuid() (current->fsuid)
-#define current_fsgid() (current->fsgid)
-
/*
* Priority of a process goes from 0..MAX_PRIO-1, valid RT
* priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH
diff --git a/include/net/scm.h b/include/net/scm.h
index 06df126..b133114 100644
--- a/include/net/scm.h
+++ b/include/net/scm.h
@@ -54,8 +54,8 @@ static __inline__ int scm_send(struct socket *sock, struct msghdr *msg,
struct scm_cookie *scm)
{
struct task_struct *p = current;
- scm->creds.uid = p->uid;
- scm->creds.gid = p->gid;
+ scm->creds.uid = p->sec->uid;
+ scm->creds.gid = p->sec->gid;
scm->creds.pid = task_tgid_vnr(p);
scm->fp = NULL;
scm->seq = 0;
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 590045a..43a3228 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -118,7 +118,7 @@ static struct inode *mqueue_get_inode(struct super_block *sb, int mode,
if (S_ISREG(mode)) {
struct mqueue_inode_info *info;
struct task_struct *p = current;
- struct user_struct *u = p->user;
+ struct user_struct *u = p->sec->user;
unsigned long mq_bytes, mq_msg_tblsz;

inode->i_fop = &mqueue_file_operations;
@@ -511,7 +511,7 @@ static void __do_notify(struct mqueue_inode_info *info)
sig_i.si_code = SI_MESGQ;
sig_i.si_value = info->notify.sigev_value;
sig_i.si_pid = task_pid_vnr(current);
- sig_i.si_uid = current->uid;
+ sig_i.si_uid = current->act_as->uid;

kill_pid_info(info->notify.sigev_signo,
&sig_i, info->notify_owner);
diff --git a/ipc/msg.c b/ipc/msg.c
index ec0c724..9599b6b 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -562,8 +562,8 @@ asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf)
}

err = -EPERM;
- if (current->euid != ipcp->cuid &&
- current->euid != ipcp->uid && !capable(CAP_SYS_ADMIN))
+ if (current->act_as->euid != ipcp->cuid &&
+ current->act_as->euid != ipcp->uid && !capable(CAP_SYS_ADMIN))
/* We _could_ check for CAP_CHOWN above, but we don't */
goto out_unlock_up;

diff --git a/ipc/sem.c b/ipc/sem.c
index d65e285..31de57a 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -935,8 +935,8 @@ static int semctl_down(struct ipc_namespace *ns, int semid, int semnum,
if (err)
goto out_unlock;
}
- if (current->euid != ipcp->cuid &&
- current->euid != ipcp->uid && !capable(CAP_SYS_ADMIN)) {
+ if (current->act_as->euid != ipcp->cuid &&
+ current->act_as->euid != ipcp->uid && !capable(CAP_SYS_ADMIN)) {
err=-EPERM;
goto out_unlock;
}
diff --git a/ipc/shm.c b/ipc/shm.c
index 65c3a29..9cfaf3d 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -431,7 +431,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
if (shmflg & SHM_HUGETLB) {
/* hugetlb_file_setup takes care of mlock user accounting */
file = hugetlb_file_setup(name, size);
- shp->mlock_user = current->user;
+ shp->mlock_user = current->sec->user;
} else {
int acctflag = VM_ACCOUNT;
/*
@@ -784,8 +784,8 @@ asmlinkage long sys_shmctl (int shmid, int cmd, struct shmid_ds __user *buf)

if (!capable(CAP_IPC_LOCK)) {
err = -EPERM;
- if (current->euid != shp->shm_perm.uid &&
- current->euid != shp->shm_perm.cuid)
+ if (current->act_as->euid != shp->shm_perm.uid &&
+ current->act_as->euid != shp->shm_perm.cuid)
goto out_unlock;
if (cmd == SHM_LOCK &&
!current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur)
@@ -797,7 +797,7 @@ asmlinkage long sys_shmctl (int shmid, int cmd, struct shmid_ds __user *buf)
goto out_unlock;

if(cmd==SHM_LOCK) {
- struct user_struct * user = current->user;
+ struct user_struct *user = current->act_as->user;
if (!is_file_hugepages(shp->shm_file)) {
err = shmem_lock(shp->shm_file, 1, user);
if (!err && !(shp->shm_perm.mode & SHM_LOCKED)){
@@ -836,8 +836,8 @@ asmlinkage long sys_shmctl (int shmid, int cmd, struct shmid_ds __user *buf)
if (err)
goto out_unlock_up;

- if (current->euid != shp->shm_perm.uid &&
- current->euid != shp->shm_perm.cuid &&
+ if (current->act_as->euid != shp->shm_perm.uid &&
+ current->act_as->euid != shp->shm_perm.cuid &&
!capable(CAP_SYS_ADMIN)) {
err=-EPERM;
goto out_unlock_up;
@@ -876,8 +876,8 @@ asmlinkage long sys_shmctl (int shmid, int cmd, struct shmid_ds __user *buf)
if (err)
goto out_unlock_up;
err=-EPERM;
- if (current->euid != shp->shm_perm.uid &&
- current->euid != shp->shm_perm.cuid &&
+ if (current->act_as->euid != shp->shm_perm.uid &&
+ current->act_as->euid != shp->shm_perm.cuid &&
!capable(CAP_SYS_ADMIN)) {
goto out_unlock_up;
}
diff --git a/ipc/util.c b/ipc/util.c
index 76c1f34..043dcb7 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -283,8 +283,8 @@ int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size)

ids->in_use++;

- new->cuid = new->uid = current->euid;
- new->gid = new->cgid = current->egid;
+ new->cuid = new->uid = current->act_as->euid;
+ new->gid = new->cgid = current->act_as->egid;

new->seq = ids->seq++;
if(ids->seq > ids->seq_max)
@@ -632,7 +632,8 @@ int ipcperms (struct kern_ipc_perm *ipcp, short flag)
return err;
requested_mode = (flag >> 6) | (flag >> 3) | flag;
granted_mode = ipcp->mode;
- if (current->euid == ipcp->cuid || current->euid == ipcp->uid)
+ if (current->act_as->euid == ipcp->cuid ||
+ current->act_as->euid == ipcp->uid)
granted_mode >>= 6;
else if (in_group_p(ipcp->cgid) || in_group_p(ipcp->gid))
granted_mode >>= 3;
diff --git a/kernel/acct.c b/kernel/acct.c
index 521dfa5..f2d1783 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -470,15 +470,15 @@ static void do_acct_process(struct file *file)
do_div(elapsed, AHZ);
ac.ac_btime = get_seconds() - elapsed;
/* we really need to bite the bullet and change layout */
- ac.ac_uid = current->uid;
- ac.ac_gid = current->gid;
+ ac.ac_uid = current->sec->uid;
+ ac.ac_gid = current->sec->gid;
#if ACCT_VERSION==2
ac.ac_ahz = AHZ;
#endif
#if ACCT_VERSION==1 || ACCT_VERSION==2
/* backward-compatible 16 bit fields */
- ac.ac_uid16 = current->uid;
- ac.ac_gid16 = current->gid;
+ ac.ac_uid16 = current->sec->uid;
+ ac.ac_gid16 = current->sec->gid;
#endif
#if ACCT_VERSION==3
ac.ac_pid = current->tgid;
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 1c06ecf..e15d595 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -405,6 +405,7 @@ static int audit_filter_rules(struct task_struct *tsk,
struct audit_names *name,
enum audit_state *state)
{
+ struct task_security *sec = tsk->sec;
int i, j, need_sid = 1;
u32 sid;

@@ -424,28 +425,28 @@ static int audit_filter_rules(struct task_struct *tsk,
}
break;
case AUDIT_UID:
- result = audit_comparator(tsk->uid, f->op, f->val);
+ result = audit_comparator(sec->uid, f->op, f->val);
break;
case AUDIT_EUID:
- result = audit_comparator(tsk->euid, f->op, f->val);
+ result = audit_comparator(sec->euid, f->op, f->val);
break;
case AUDIT_SUID:
- result = audit_comparator(tsk->suid, f->op, f->val);
+ result = audit_comparator(sec->suid, f->op, f->val);
break;
case AUDIT_FSUID:
- result = audit_comparator(tsk->fsuid, f->op, f->val);
+ result = audit_comparator(sec->fsuid, f->op, f->val);
break;
case AUDIT_GID:
- result = audit_comparator(tsk->gid, f->op, f->val);
+ result = audit_comparator(sec->gid, f->op, f->val);
break;
case AUDIT_EGID:
- result = audit_comparator(tsk->egid, f->op, f->val);
+ result = audit_comparator(sec->egid, f->op, f->val);
break;
case AUDIT_SGID:
- result = audit_comparator(tsk->sgid, f->op, f->val);
+ result = audit_comparator(sec->sgid, f->op, f->val);
break;
case AUDIT_FSGID:
- result = audit_comparator(tsk->fsgid, f->op, f->val);
+ result = audit_comparator(sec->fsgid, f->op, f->val);
break;
case AUDIT_PERS:
result = audit_comparator(tsk->personality, f->op, f->val);
@@ -1154,6 +1155,7 @@ static void audit_log_execve_info(struct audit_context *context,

static void audit_log_exit(struct audit_context *context, struct task_struct *tsk)
{
+ struct task_security *sec = tsk->sec;
int i, call_panic = 0;
struct audit_buffer *ab;
struct audit_aux_data *aux;
@@ -1163,14 +1165,14 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
context->pid = tsk->pid;
if (!context->ppid)
context->ppid = sys_getppid();
- context->uid = tsk->uid;
- context->gid = tsk->gid;
- context->euid = tsk->euid;
- context->suid = tsk->suid;
- context->fsuid = tsk->fsuid;
- context->egid = tsk->egid;
- context->sgid = tsk->sgid;
- context->fsgid = tsk->fsgid;
+ context->uid = sec->uid;
+ context->gid = sec->gid;
+ context->euid = sec->euid;
+ context->suid = sec->suid;
+ context->fsuid = sec->fsuid;
+ context->egid = sec->egid;
+ context->sgid = sec->sgid;
+ context->fsgid = sec->fsgid;
context->personality = tsk->personality;

ab = audit_log_start(context, GFP_KERNEL, AUDIT_SYSCALL);
@@ -1960,7 +1962,7 @@ int audit_set_loginuid(struct task_struct *task, uid_t loginuid)
audit_log_format(ab, "login pid=%d uid=%u "
"old auid=%u new auid=%u"
" old ses=%u new ses=%u",
- task->pid, task->uid,
+ task->pid, task->sec->uid,
task->loginuid, loginuid,
task->sessionid, sessionid);
audit_log_end(ab);
@@ -2344,7 +2346,7 @@ void __audit_ptrace(struct task_struct *t)

context->target_pid = t->pid;
context->target_auid = audit_get_loginuid(t);
- context->target_uid = t->uid;
+ context->target_uid = t->sec->uid;
context->target_sessionid = audit_get_sessionid(t);
selinux_get_task_sid(t, &context->target_sid);
memcpy(context->target_comm, t->comm, TASK_COMM_LEN);
@@ -2373,7 +2375,7 @@ int __audit_signal_info(int sig, struct task_struct *t)
if (tsk->loginuid != -1)
audit_sig_uid = tsk->loginuid;
else
- audit_sig_uid = tsk->uid;
+ audit_sig_uid = tsk->sec->uid;
selinux_get_task_sid(tsk, &audit_sig_sid);
}
if (!audit_signals || audit_dummy_context())
@@ -2385,7 +2387,7 @@ int __audit_signal_info(int sig, struct task_struct *t)
if (!ctx->target_pid) {
ctx->target_pid = t->tgid;
ctx->target_auid = audit_get_loginuid(t);
- ctx->target_uid = t->uid;
+ ctx->target_uid = t->sec->uid;
ctx->target_sessionid = audit_get_sessionid(t);
selinux_get_task_sid(t, &ctx->target_sid);
memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN);
@@ -2406,7 +2408,7 @@ int __audit_signal_info(int sig, struct task_struct *t)

axp->target_pid[axp->pid_count] = t->tgid;
axp->target_auid[axp->pid_count] = audit_get_loginuid(t);
- axp->target_uid[axp->pid_count] = t->uid;
+ axp->target_uid[axp->pid_count] = t->sec->uid;
axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t);
selinux_get_task_sid(t, &axp->target_sid[axp->pid_count]);
memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN);
@@ -2437,7 +2439,7 @@ void audit_core_dumps(long signr)

ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u",
- auid, current->uid, current->gid, sessionid);
+ auid, current->sec->uid, current->sec->gid, sessionid);
selinux_get_task_sid(current, &sid);
if (sid) {
char *ctx = NULL;
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 87c5f1e..681de68 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1277,8 +1277,9 @@ static int attach_task_by_pid(struct cgroup *cgrp, char *pidbuf)
get_task_struct(tsk);
rcu_read_unlock();

- if ((current->euid) && (current->euid != tsk->uid)
- && (current->euid != tsk->suid)) {
+ if (current->act_as->euid &&
+ current->act_as->euid != tsk->sec->uid &&
+ current->act_as->euid != tsk->sec->suid) {
put_task_struct(tsk);
return -EACCES;
}
diff --git a/kernel/exit.c b/kernel/exit.c
index eb9934a..910c793 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -145,7 +145,7 @@ void release_task(struct task_struct * p)
struct task_struct *leader;
int zap_leader;
repeat:
- atomic_dec(&p->user->processes);
+ atomic_dec(&p->sec->user->processes);
proc_flush_task(p);
write_lock_irq(&tasklist_lock);
ptrace_unlink(p);
@@ -1197,7 +1197,7 @@ static int wait_task_zombie(struct task_struct *p, int noreap,

if (unlikely(noreap)) {
pid_t pid = task_pid_nr_ns(p, ns);
- uid_t uid = p->uid;
+ uid_t uid = p->sec->uid;
int exit_code = p->exit_code;
int why, status;

@@ -1317,7 +1317,7 @@ static int wait_task_zombie(struct task_struct *p, int noreap,
if (!retval && infop)
retval = put_user(task_pid_nr_ns(p, ns), &infop->si_pid);
if (!retval && infop)
- retval = put_user(p->uid, &infop->si_uid);
+ retval = put_user(p->sec->uid, &infop->si_uid);
if (!retval)
retval = task_pid_nr_ns(p, ns);

@@ -1380,7 +1380,7 @@ static int wait_task_stopped(struct task_struct *p, int delayed_group_leader,
read_unlock(&tasklist_lock);

if (unlikely(noreap)) {
- uid_t uid = p->uid;
+ uid_t uid = p->sec->uid;
int why = (p->ptrace & PT_PTRACED) ? CLD_TRAPPED : CLD_STOPPED;

exit_code = p->exit_code;
@@ -1451,7 +1451,7 @@ bail_ref:
if (!retval && infop)
retval = put_user(pid, &infop->si_pid);
if (!retval && infop)
- retval = put_user(p->uid, &infop->si_uid);
+ retval = put_user(p->sec->uid, &infop->si_uid);
if (!retval)
retval = pid;
put_task_struct(p);
@@ -1490,7 +1490,7 @@ static int wait_task_continued(struct task_struct *p, int noreap,

ns = current->nsproxy->pid_ns;
pid = task_pid_nr_ns(p, ns);
- uid = p->uid;
+ uid = p->sec->uid;
get_task_struct(p);
read_unlock(&tasklist_lock);

diff --git a/kernel/fork.c b/kernel/fork.c
index b2ef8e4..6580020 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -124,8 +124,8 @@ void __put_task_struct(struct task_struct *tsk)
WARN_ON(tsk == current);

security_task_free(tsk);
- free_uid(tsk->user);
- put_group_info(tsk->group_info);
+ free_uid(tsk->__temp_sec.user);
+ put_group_info(tsk->__temp_sec.group_info);
delayacct_tsk_free(tsk);

if (!profile_handoff_task(tsk))
@@ -1046,17 +1046,18 @@ static struct task_struct *copy_process(unsigned long clone_flags,
DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled);
DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
#endif
+ p->act_as = p->sec = &p->__temp_sec;
retval = -EAGAIN;
- if (atomic_read(&p->user->processes) >=
+ if (atomic_read(&p->sec->user->processes) >=
p->signal->rlim[RLIMIT_NPROC].rlim_cur) {
if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RESOURCE) &&
- p->user != current->nsproxy->user_ns->root_user)
+ p->sec->user != current->nsproxy->user_ns->root_user)
goto bad_fork_free;
}

- atomic_inc(&p->user->__count);
- atomic_inc(&p->user->processes);
- get_group_info(p->group_info);
+ atomic_inc(&p->sec->user->__count);
+ atomic_inc(&p->sec->user->processes);
+ get_group_info(p->sec->group_info);

/*
* If multiple threads are within copy_process(), then this check
@@ -1121,9 +1122,8 @@ static struct task_struct *copy_process(unsigned long clone_flags,
p->real_start_time = p->start_time;
monotonic_to_bootbased(&p->real_start_time);
#ifdef CONFIG_SECURITY
- p->security = NULL;
+ p->sec->security = NULL;
#endif
- p->cap_bset = current->cap_bset;
p->io_context = NULL;
p->audit_context = NULL;
cgroup_fork(p);
@@ -1395,9 +1395,9 @@ bad_fork_cleanup_cgroup:
bad_fork_cleanup_put_domain:
module_put(task_thread_info(p)->exec_domain->module);
bad_fork_cleanup_count:
- put_group_info(p->group_info);
- atomic_dec(&p->user->processes);
- free_uid(p->user);
+ put_group_info(p->sec->group_info);
+ atomic_dec(&p->sec->user->processes);
+ free_uid(p->sec->user);
bad_fork_free:
free_task(p);
fork_out:
diff --git a/kernel/futex.c b/kernel/futex.c
index a6baaec..fa25e20 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -447,7 +447,8 @@ static struct task_struct * futex_find_get_task(pid_t pid)

rcu_read_lock();
p = find_task_by_vpid(pid);
- if (!p || ((current->euid != p->euid) && (current->euid != p->uid)))
+ if (!p || (current->act_as->euid != p->sec->euid &&
+ current->act_as->euid != p->sec->uid))
p = ERR_PTR(-ESRCH);
else
get_task_struct(p);
@@ -1905,8 +1906,9 @@ sys_get_robust_list(int pid, struct robust_list_head __user * __user *head_ptr,
if (!p)
goto err_unlock;
ret = -EPERM;
- if ((current->euid != p->euid) && (current->euid != p->uid) &&
- !capable(CAP_SYS_PTRACE))
+ if (current->act_as->euid != p->sec->euid &&
+ current->act_as->euid != p->sec->uid &&
+ !capable(CAP_SYS_PTRACE))
goto err_unlock;
head = p->robust_list;
rcu_read_unlock();
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index 133d558..51f46cd 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -141,8 +141,9 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
if (!p)
goto err_unlock;
ret = -EPERM;
- if ((current->euid != p->euid) && (current->euid != p->uid) &&
- !capable(CAP_SYS_PTRACE))
+ if (current->act_as->euid != p->sec->euid &&
+ current->act_as->euid != p->sec->uid &&
+ !capable(CAP_SYS_PTRACE))
goto err_unlock;
head = p->compat_robust_list;
read_unlock(&tasklist_lock);
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 628b03a..3ecc9e1 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -121,6 +121,8 @@ int ptrace_check_attach(struct task_struct *child, int kill)

int __ptrace_may_attach(struct task_struct *task)
{
+ struct task_security *sec = current->act_as, *tsec = task->sec;
+
/* May we inspect the given task?
* This check is used both for attaching with ptrace
* and for allowing access to sensitive information in /proc.
@@ -133,12 +135,12 @@ int __ptrace_may_attach(struct task_struct *task)
/* Don't let security modules deny introspection */
if (task == current)
return 0;
- if (((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))
+ if (((sec->uid != tsec->euid) ||
+ (sec->uid != tsec->suid) ||
+ (sec->uid != tsec->uid) ||
+ (sec->gid != tsec->egid) ||
+ (sec->gid != tsec->sgid) ||
+ (sec->gid != tsec->gid)) && !capable(CAP_SYS_PTRACE))
return -EPERM;
smp_rmb();
if (task->mm)
diff --git a/kernel/sched.c b/kernel/sched.c
index 9474b23..7f6d603 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -275,7 +275,7 @@ static inline struct task_group *task_group(struct task_struct *p)
struct task_group *tg;

#ifdef CONFIG_FAIR_USER_SCHED
- tg = p->user->tg;
+ tg = p->sec->user->tg;
#elif defined(CONFIG_FAIR_CGROUP_SCHED)
tg = container_of(task_subsys_state(p, cpu_cgroup_subsys_id),
struct task_group, css);
@@ -4566,8 +4566,8 @@ recheck:
return -EPERM;

/* can't change other user's priorities */
- if ((current->euid != p->euid) &&
- (current->euid != p->uid))
+ if ((current->act_as->euid != p->sec->euid) &&
+ (current->act_as->euid != p->sec->uid))
return -EPERM;
}

@@ -4756,8 +4756,9 @@ long sched_setaffinity(pid_t pid, cpumask_t new_mask)
read_unlock(&tasklist_lock);

retval = -EPERM;
- if ((current->euid != p->euid) && (current->euid != p->uid) &&
- !capable(CAP_SYS_NICE))
+ if ((current->act_as->euid != p->sec->euid) &&
+ (current->act_as->euid != p->sec->uid) &&
+ !capable(CAP_SYS_NICE))
goto out_unlock;

retval = security_task_setscheduler(p, 0, NULL);
diff --git a/kernel/signal.c b/kernel/signal.c
index 5d30ff5..76e3fd9 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -174,7 +174,7 @@ static struct sigqueue *__sigqueue_alloc(struct task_struct *t, gfp_t flags,
* In order to avoid problems with "switch_user()", we want to make
* sure that the compiler doesn't re-load "t->user"
*/
- user = t->user;
+ user = t->sec->user;
barrier();
atomic_inc(&user->sigpending);
if (override_rlimit ||
@@ -537,8 +537,10 @@ static int check_kill_permission(int sig, struct siginfo *info,
error = -EPERM;
if (((sig != SIGCONT) ||
(task_session_nr(current) != task_session_nr(t)))
- && (current->euid ^ t->suid) && (current->euid ^ t->uid)
- && (current->uid ^ t->suid) && (current->uid ^ t->uid)
+ && (current->act_as->euid ^ t->sec->suid)
+ && (current->act_as->euid ^ t->sec->uid)
+ && (current->act_as->uid ^ t->sec->suid)
+ && (current->act_as->uid ^ t->sec->uid)
&& !capable(CAP_KILL))
return error;
}
@@ -695,7 +697,7 @@ static int send_signal(int sig, struct siginfo *info, struct task_struct *t,
q->info.si_errno = 0;
q->info.si_code = SI_USER;
q->info.si_pid = task_pid_vnr(current);
- q->info.si_uid = current->uid;
+ q->info.si_uid = current->act_as->uid;
break;
case (unsigned long) SEND_SIG_PRIV:
q->info.si_signo = sig;
@@ -1095,8 +1097,8 @@ int kill_pid_info_as_uid(int sig, struct siginfo *info, struct pid *pid,
goto out_unlock;
}
if ((info == SEND_SIG_NOINFO || (!is_si_special(info) && SI_FROMUSER(info)))
- && (euid != p->suid) && (euid != p->uid)
- && (uid != p->suid) && (uid != p->uid)) {
+ && (euid != p->sec->suid) && (euid != p->sec->uid)
+ && (uid != p->sec->suid) && (uid != p->sec->uid)) {
ret = -EPERM;
goto out_unlock;
}
@@ -1448,7 +1450,7 @@ void do_notify_parent(struct task_struct *tsk, int sig)
info.si_pid = task_pid_nr_ns(tsk, tsk->parent->nsproxy->pid_ns);
rcu_read_unlock();

- info.si_uid = tsk->uid;
+ info.si_uid = tsk->sec->uid;

/* FIXME: find out whether or not this is supposed to be c*time. */
info.si_utime = cputime_to_jiffies(cputime_add(tsk->utime,
@@ -1519,7 +1521,7 @@ static void do_notify_parent_cldstop(struct task_struct *tsk, int why)
info.si_pid = task_pid_nr_ns(tsk, tsk->parent->nsproxy->pid_ns);
rcu_read_unlock();

- info.si_uid = tsk->uid;
+ info.si_uid = tsk->sec->uid;

/* FIXME: find out whether or not this is supposed to be c*time. */
info.si_utime = cputime_to_jiffies(tsk->utime);
@@ -1676,7 +1678,7 @@ void ptrace_notify(int exit_code)
info.si_signo = SIGTRAP;
info.si_code = exit_code;
info.si_pid = task_pid_vnr(current);
- info.si_uid = current->uid;
+ info.si_uid = current->sec->uid;

/* Let the debugger run. */
spin_lock_irq(&current->sighand->siglock);
@@ -1805,7 +1807,7 @@ relock:
info->si_errno = 0;
info->si_code = SI_USER;
info->si_pid = task_pid_vnr(current->parent);
- info->si_uid = current->parent->uid;
+ info->si_uid = current->parent->sec->uid;
}

/* If the (new) signal is now blocked, requeue it. */
@@ -2192,7 +2194,7 @@ sys_kill(int pid, int sig)
info.si_errno = 0;
info.si_code = SI_USER;
info.si_pid = task_tgid_vnr(current);
- info.si_uid = current->uid;
+ info.si_uid = current->act_as->uid;

return kill_something_info(sig, &info, pid);
}
@@ -2208,7 +2210,7 @@ static int do_tkill(int tgid, int pid, int sig)
info.si_errno = 0;
info.si_code = SI_TKILL;
info.si_pid = task_tgid_vnr(current);
- info.si_uid = current->uid;
+ info.si_uid = current->act_as->uid;

read_lock(&tasklist_lock);
p = find_task_by_vpid(pid);
diff --git a/kernel/sys.c b/kernel/sys.c
index e3c08d4..b956bfe 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -110,8 +110,8 @@ static int set_one_prio(struct task_struct *p, int niceval, int error)
{
int no_nice;

- if (p->uid != current->euid &&
- p->euid != current->euid && !capable(CAP_SYS_NICE)) {
+ if (p->sec->uid != current->act_as->euid &&
+ p->sec->euid != current->act_as->euid && !capable(CAP_SYS_NICE)) {
error = -EPERM;
goto out;
}
@@ -168,18 +168,19 @@ asmlinkage long sys_setpriority(int which, int who, int niceval)
} while_each_pid_task(pgrp, PIDTYPE_PGID, p);
break;
case PRIO_USER:
- user = current->user;
+ user = current->sec->user;
if (!who)
- who = current->uid;
+ who = current->sec->uid;
else
- if ((who != current->uid) && !(user = find_user(who)))
+ if ((who != current->sec->uid) &&
+ !(user = find_user(who)))
goto out_unlock; /* No processes for this user */

do_each_thread(g, p)
- if (p->uid == who)
+ if (p->sec->uid == who)
error = set_one_prio(p, niceval, error);
while_each_thread(g, p);
- if (who != current->uid)
+ if (who != current->sec->uid)
free_uid(user); /* For find_user() */
break;
}
@@ -230,21 +231,22 @@ asmlinkage long sys_getpriority(int which, int who)
} while_each_pid_task(pgrp, PIDTYPE_PGID, p);
break;
case PRIO_USER:
- user = current->user;
+ user = current->sec->user;
if (!who)
- who = current->uid;
+ who = current->sec->uid;
else
- if ((who != current->uid) && !(user = find_user(who)))
+ if ((who != current->sec->uid) &&
+ !(user = find_user(who)))
goto out_unlock; /* No processes for this user */

do_each_thread(g, p)
- if (p->uid == who) {
+ if (p->sec->uid == who) {
niceval = 20 - task_nice(p);
if (niceval > retval)
retval = niceval;
}
while_each_thread(g, p);
- if (who != current->uid)
+ if (who != current->sec->uid)
free_uid(user); /* for find_user() */
break;
}
@@ -481,8 +483,9 @@ void ctrl_alt_del(void)
*/
asmlinkage long sys_setregid(gid_t rgid, gid_t egid)
{
- int old_rgid = current->gid;
- int old_egid = current->egid;
+ struct task_security *sec = current->sec;
+ int old_rgid = sec->gid;
+ int old_egid = sec->egid;
int new_rgid = old_rgid;
int new_egid = old_egid;
int retval;
@@ -493,7 +496,7 @@ asmlinkage long sys_setregid(gid_t rgid, gid_t egid)

if (rgid != (gid_t) -1) {
if ((old_rgid == rgid) ||
- (current->egid==rgid) ||
+ (sec->egid == rgid) ||
capable(CAP_SETGID))
new_rgid = rgid;
else
@@ -501,8 +504,8 @@ asmlinkage long sys_setregid(gid_t rgid, gid_t egid)
}
if (egid != (gid_t) -1) {
if ((old_rgid == egid) ||
- (current->egid == egid) ||
- (current->sgid == egid) ||
+ (sec->egid == egid) ||
+ (sec->sgid == egid) ||
capable(CAP_SETGID))
new_egid = egid;
else
@@ -514,10 +517,10 @@ asmlinkage long sys_setregid(gid_t rgid, gid_t egid)
}
if (rgid != (gid_t) -1 ||
(egid != (gid_t) -1 && egid != old_rgid))
- current->sgid = new_egid;
- current->fsgid = new_egid;
- current->egid = new_egid;
- current->gid = new_rgid;
+ sec->sgid = new_egid;
+ sec->fsgid = new_egid;
+ sec->egid = new_egid;
+ sec->gid = new_rgid;
key_fsgid_changed(current);
proc_id_connector(current, PROC_EVENT_GID);
return 0;
@@ -530,7 +533,8 @@ asmlinkage long sys_setregid(gid_t rgid, gid_t egid)
*/
asmlinkage long sys_setgid(gid_t gid)
{
- int old_egid = current->egid;
+ struct task_security *sec = current->sec;
+ int old_egid = sec->egid;
int retval;

retval = security_task_setgid(gid, (gid_t)-1, (gid_t)-1, LSM_SETID_ID);
@@ -542,13 +546,13 @@ asmlinkage long sys_setgid(gid_t gid)
set_dumpable(current->mm, suid_dumpable);
smp_wmb();
}
- current->gid = current->egid = current->sgid = current->fsgid = gid;
- } else if ((gid == current->gid) || (gid == current->sgid)) {
+ sec->gid = sec->egid = sec->sgid = sec->fsgid = gid;
+ } else if ((gid == sec->gid) || (gid == sec->sgid)) {
if (old_egid != gid) {
set_dumpable(current->mm, suid_dumpable);
smp_wmb();
}
- current->egid = current->fsgid = gid;
+ sec->egid = sec->fsgid = gid;
}
else
return -EPERM;
@@ -579,7 +583,7 @@ static int set_user(uid_t new_ruid, int dumpclear)
set_dumpable(current->mm, suid_dumpable);
smp_wmb();
}
- current->uid = new_ruid;
+ current->sec->uid = new_ruid;
return 0;
}

@@ -600,6 +604,7 @@ static int set_user(uid_t new_ruid, int dumpclear)
*/
asmlinkage long sys_setreuid(uid_t ruid, uid_t euid)
{
+ struct task_security *sec = current->sec;
int old_ruid, old_euid, old_suid, new_ruid, new_euid;
int retval;

@@ -607,14 +612,14 @@ asmlinkage long sys_setreuid(uid_t ruid, uid_t euid)
if (retval)
return retval;

- new_ruid = old_ruid = current->uid;
- new_euid = old_euid = current->euid;
- old_suid = current->suid;
+ new_ruid = old_ruid = sec->uid;
+ new_euid = old_euid = sec->euid;
+ old_suid = sec->suid;

if (ruid != (uid_t) -1) {
new_ruid = ruid;
if ((old_ruid != ruid) &&
- (current->euid != ruid) &&
+ (sec->euid != ruid) &&
!capable(CAP_SETUID))
return -EPERM;
}
@@ -622,8 +627,8 @@ asmlinkage long sys_setreuid(uid_t ruid, uid_t euid)
if (euid != (uid_t) -1) {
new_euid = euid;
if ((old_ruid != euid) &&
- (current->euid != euid) &&
- (current->suid != euid) &&
+ (sec->euid != euid) &&
+ (sec->suid != euid) &&
!capable(CAP_SETUID))
return -EPERM;
}
@@ -635,11 +640,11 @@ asmlinkage long sys_setreuid(uid_t ruid, uid_t euid)
set_dumpable(current->mm, suid_dumpable);
smp_wmb();
}
- current->fsuid = current->euid = new_euid;
+ sec->fsuid = sec->euid = new_euid;
if (ruid != (uid_t) -1 ||
(euid != (uid_t) -1 && euid != old_ruid))
- current->suid = current->euid;
- current->fsuid = current->euid;
+ sec->suid = sec->euid;
+ sec->fsuid = sec->euid;

key_fsuid_changed(current);
proc_id_connector(current, PROC_EVENT_UID);
@@ -662,7 +667,8 @@ asmlinkage long sys_setreuid(uid_t ruid, uid_t euid)
*/
asmlinkage long sys_setuid(uid_t uid)
{
- int old_euid = current->euid;
+ struct task_security *sec = current->sec;
+ int old_euid = sec->euid;
int old_ruid, old_suid, new_suid;
int retval;

@@ -670,23 +676,23 @@ asmlinkage long sys_setuid(uid_t uid)
if (retval)
return retval;

- old_ruid = current->uid;
- old_suid = current->suid;
+ old_ruid = sec->uid;
+ old_suid = sec->suid;
new_suid = old_suid;

if (capable(CAP_SETUID)) {
if (uid != old_ruid && set_user(uid, old_euid != uid) < 0)
return -EAGAIN;
new_suid = uid;
- } else if ((uid != current->uid) && (uid != new_suid))
+ } else if ((uid != sec->uid) && (uid != new_suid))
return -EPERM;

if (old_euid != uid) {
set_dumpable(current->mm, suid_dumpable);
smp_wmb();
}
- current->fsuid = current->euid = uid;
- current->suid = new_suid;
+ sec->fsuid = sec->euid = uid;
+ sec->suid = new_suid;

key_fsuid_changed(current);
proc_id_connector(current, PROC_EVENT_UID);
@@ -701,9 +707,10 @@ asmlinkage long sys_setuid(uid_t uid)
*/
asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid)
{
- int old_ruid = current->uid;
- int old_euid = current->euid;
- int old_suid = current->suid;
+ struct task_security *sec = current->sec;
+ int old_ruid = sec->uid;
+ int old_euid = sec->euid;
+ int old_suid = sec->suid;
int retval;

retval = security_task_setuid(ruid, euid, suid, LSM_SETID_RES);
@@ -711,30 +718,31 @@ asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid)
return retval;

if (!capable(CAP_SETUID)) {
- if ((ruid != (uid_t) -1) && (ruid != current->uid) &&
- (ruid != current->euid) && (ruid != current->suid))
+ if ((ruid != (uid_t) -1) && (ruid != sec->uid) &&
+ (ruid != sec->euid) && (ruid != sec->suid))
return -EPERM;
- if ((euid != (uid_t) -1) && (euid != current->uid) &&
- (euid != current->euid) && (euid != current->suid))
+ if ((euid != (uid_t) -1) && (euid != sec->uid) &&
+ (euid != sec->euid) && (euid != sec->suid))
return -EPERM;
- if ((suid != (uid_t) -1) && (suid != current->uid) &&
- (suid != current->euid) && (suid != current->suid))
+ if ((suid != (uid_t) -1) && (suid != sec->uid) &&
+ (suid != sec->euid) && (suid != sec->suid))
return -EPERM;
}
if (ruid != (uid_t) -1) {
- if (ruid != current->uid && set_user(ruid, euid != current->euid) < 0)
+ if (ruid != sec->uid &&
+ set_user(ruid, euid != sec->euid) < 0)
return -EAGAIN;
}
if (euid != (uid_t) -1) {
- if (euid != current->euid) {
+ if (euid != sec->euid) {
set_dumpable(current->mm, suid_dumpable);
smp_wmb();
}
- current->euid = euid;
+ sec->euid = euid;
}
- current->fsuid = current->euid;
+ sec->fsuid = sec->euid;
if (suid != (uid_t) -1)
- current->suid = suid;
+ sec->suid = suid;

key_fsuid_changed(current);
proc_id_connector(current, PROC_EVENT_UID);
@@ -744,11 +752,12 @@ asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid)

asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid)
{
+ struct task_security *sec = current->sec;
int retval;

- if (!(retval = put_user(current->uid, ruid)) &&
- !(retval = put_user(current->euid, euid)))
- retval = put_user(current->suid, suid);
+ if (!(retval = put_user(sec->uid, ruid)) &&
+ !(retval = put_user(sec->euid, euid)))
+ retval = put_user(sec->suid, suid);

return retval;
}
@@ -758,6 +767,7 @@ asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __us
*/
asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid)
{
+ struct task_security *sec = current->sec;
int retval;

retval = security_task_setgid(rgid, egid, sgid, LSM_SETID_RES);
@@ -765,28 +775,28 @@ asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid)
return retval;

if (!capable(CAP_SETGID)) {
- if ((rgid != (gid_t) -1) && (rgid != current->gid) &&
- (rgid != current->egid) && (rgid != current->sgid))
+ if ((rgid != (gid_t) -1) && (rgid != sec->gid) &&
+ (rgid != sec->egid) && (rgid != sec->sgid))
return -EPERM;
- if ((egid != (gid_t) -1) && (egid != current->gid) &&
- (egid != current->egid) && (egid != current->sgid))
+ if ((egid != (gid_t) -1) && (egid != sec->gid) &&
+ (egid != sec->egid) && (egid != sec->sgid))
return -EPERM;
- if ((sgid != (gid_t) -1) && (sgid != current->gid) &&
- (sgid != current->egid) && (sgid != current->sgid))
+ if ((sgid != (gid_t) -1) && (sgid != sec->gid) &&
+ (sgid != sec->egid) && (sgid != sec->sgid))
return -EPERM;
}
if (egid != (gid_t) -1) {
- if (egid != current->egid) {
+ if (egid != sec->egid) {
set_dumpable(current->mm, suid_dumpable);
smp_wmb();
}
- current->egid = egid;
+ sec->egid = egid;
}
- current->fsgid = current->egid;
+ sec->fsgid = sec->egid;
if (rgid != (gid_t) -1)
- current->gid = rgid;
+ sec->gid = rgid;
if (sgid != (gid_t) -1)
- current->sgid = sgid;
+ sec->sgid = sgid;

key_fsgid_changed(current);
proc_id_connector(current, PROC_EVENT_GID);
@@ -795,11 +805,12 @@ asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid)

asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid)
{
+ struct task_security *sec = current->sec;
int retval;

- if (!(retval = put_user(current->gid, rgid)) &&
- !(retval = put_user(current->egid, egid)))
- retval = put_user(current->sgid, sgid);
+ if (!(retval = put_user(sec->gid, rgid)) &&
+ !(retval = put_user(sec->egid, egid)))
+ retval = put_user(sec->sgid, sgid);

return retval;
}
@@ -813,20 +824,21 @@ asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __us
*/
asmlinkage long sys_setfsuid(uid_t uid)
{
+ struct task_security *sec = current->sec;
int old_fsuid;

- old_fsuid = current->fsuid;
+ old_fsuid = sec->fsuid;
if (security_task_setuid(uid, (uid_t)-1, (uid_t)-1, LSM_SETID_FS))
return old_fsuid;

- if (uid == current->uid || uid == current->euid ||
- uid == current->suid || uid == current->fsuid ||
+ if (uid == sec->uid || uid == sec->euid ||
+ uid == sec->suid || uid == sec->fsuid ||
capable(CAP_SETUID)) {
if (uid != old_fsuid) {
set_dumpable(current->mm, suid_dumpable);
smp_wmb();
}
- current->fsuid = uid;
+ sec->fsuid = uid;
}

key_fsuid_changed(current);
@@ -842,20 +854,21 @@ asmlinkage long sys_setfsuid(uid_t uid)
*/
asmlinkage long sys_setfsgid(gid_t gid)
{
+ struct task_security *sec = current->sec;
int old_fsgid;

- old_fsgid = current->fsgid;
+ old_fsgid = sec->fsgid;
if (security_task_setgid(gid, (gid_t)-1, (gid_t)-1, LSM_SETID_FS))
return old_fsgid;

- if (gid == current->gid || gid == current->egid ||
- gid == current->sgid || gid == current->fsgid ||
+ if (gid == sec->gid || gid == sec->egid ||
+ gid == sec->sgid || gid == sec->fsgid ||
capable(CAP_SETGID)) {
if (gid != old_fsgid) {
set_dumpable(current->mm, suid_dumpable);
smp_wmb();
}
- current->fsgid = gid;
+ sec->fsgid = gid;
key_fsgid_changed(current);
proc_id_connector(current, PROC_EVENT_GID);
}
@@ -1232,8 +1245,15 @@ int groups_search(struct group_info *group_info, gid_t grp)
return 0;
}

-/* validate and set current->group_info */
-int set_current_groups(struct group_info *group_info)
+/**
+ * set_groups - Change a group subscription in a security record
+ * @sec: The security record to alter
+ * @group_info: The group list to impose
+ *
+ * Validate a group subscription and, if valid, impose it upon a task security
+ * record.
+ */
+int set_groups(struct task_security *sec, struct group_info *group_info)
{
int retval;
struct group_info *old_info;
@@ -1245,20 +1265,34 @@ int set_current_groups(struct group_info *group_info)
groups_sort(group_info);
get_group_info(group_info);

- task_lock(current);
- old_info = current->group_info;
- current->group_info = group_info;
- task_unlock(current);
+ spin_lock(&sec->lock);
+ old_info = sec->group_info;
+ sec->group_info = group_info;
+ spin_unlock(&sec->lock);

put_group_info(old_info);
-
return 0;
}

+EXPORT_SYMBOL(set_groups);
+
+/**
+ * set_current_groups - Change current's group subscription
+ * @group_info: The group list to impose
+ *
+ * Validate a group subscription and, if valid, impose it upon current's task
+ * security record.
+ */
+int set_current_groups(struct group_info *group_info)
+{
+ return set_groups(current->sec, group_info);
+}
+
EXPORT_SYMBOL(set_current_groups);

asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist)
{
+ struct task_security *sec = current->sec;
int i = 0;

/*
@@ -1270,13 +1304,13 @@ asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist)
return -EINVAL;

/* no need to grab task_lock here; it cannot change */
- i = current->group_info->ngroups;
+ i = sec->group_info->ngroups;
if (gidsetsize) {
if (i > gidsetsize) {
i = -EINVAL;
goto out;
}
- if (groups_to_user(grouplist, current->group_info)) {
+ if (groups_to_user(grouplist, sec->group_info)) {
i = -EFAULT;
goto out;
}
@@ -1320,9 +1354,10 @@ asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist)
*/
int in_group_p(gid_t grp)
{
+ struct task_security *act_as = current->act_as;
int retval = 1;
- if (grp != current->fsgid)
- retval = groups_search(current->group_info, grp);
+ if (grp != act_as->fsgid)
+ retval = groups_search(act_as->group_info, grp);
return retval;
}

@@ -1330,9 +1365,10 @@ EXPORT_SYMBOL(in_group_p);

int in_egroup_p(gid_t grp)
{
+ struct task_security *act_as = current->act_as;
int retval = 1;
- if (grp != current->egid)
- retval = groups_search(current->group_info, grp);
+ if (grp != act_as->egid)
+ retval = groups_search(act_as->group_info, grp);
return retval;
}

@@ -1641,6 +1677,9 @@ asmlinkage long sys_umask(int mask)
asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5)
{
+ struct task_struct *me = current;
+ struct task_security *sec = me->sec;
+ unsigned char comm[sizeof(me->comm)];
long error;

error = security_task_prctl(option, arg2, arg3, arg4, arg5);
@@ -1653,39 +1692,39 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
error = -EINVAL;
break;
}
- current->pdeath_signal = arg2;
+ me->pdeath_signal = arg2;
break;
case PR_GET_PDEATHSIG:
- error = put_user(current->pdeath_signal, (int __user *)arg2);
+ error = put_user(me->pdeath_signal, (int __user *)arg2);
break;
case PR_GET_DUMPABLE:
- error = get_dumpable(current->mm);
+ error = get_dumpable(me->mm);
break;
case PR_SET_DUMPABLE:
if (arg2 < 0 || arg2 > 1) {
error = -EINVAL;
break;
}
- set_dumpable(current->mm, arg2);
+ set_dumpable(me->mm, arg2);
break;

case PR_SET_UNALIGN:
- error = SET_UNALIGN_CTL(current, arg2);
+ error = SET_UNALIGN_CTL(me, arg2);
break;
case PR_GET_UNALIGN:
- error = GET_UNALIGN_CTL(current, arg2);
+ error = GET_UNALIGN_CTL(me, arg2);
break;
case PR_SET_FPEMU:
- error = SET_FPEMU_CTL(current, arg2);
+ error = SET_FPEMU_CTL(me, arg2);
break;
case PR_GET_FPEMU:
- error = GET_FPEMU_CTL(current, arg2);
+ error = GET_FPEMU_CTL(me, arg2);
break;
case PR_SET_FPEXC:
- error = SET_FPEXC_CTL(current, arg2);
+ error = SET_FPEXC_CTL(me, arg2);
break;
case PR_GET_FPEXC:
- error = GET_FPEXC_CTL(current, arg2);
+ error = GET_FPEXC_CTL(me, arg2);
break;
case PR_GET_TIMING:
error = PR_TIMING_STATISTICAL;
@@ -1698,7 +1737,7 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
break;

case PR_GET_KEEPCAPS:
- if (current->keep_capabilities)
+ if (sec->keep_capabilities)
error = 1;
break;
case PR_SET_KEEPCAPS:
@@ -1706,33 +1745,26 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
error = -EINVAL;
break;
}
- current->keep_capabilities = arg2;
+ sec->keep_capabilities = arg2;
break;
- case PR_SET_NAME: {
- struct task_struct *me = current;
- unsigned char ncomm[sizeof(me->comm)];
-
- ncomm[sizeof(me->comm)-1] = 0;
- if (strncpy_from_user(ncomm, (char __user *)arg2,
+ case PR_SET_NAME:
+ comm[sizeof(me->comm)-1] = 0;
+ if (strncpy_from_user(comm, (char __user *)arg2,
sizeof(me->comm)-1) < 0)
return -EFAULT;
- set_task_comm(me, ncomm);
+ set_task_comm(me, comm);
return 0;
- }
- case PR_GET_NAME: {
- struct task_struct *me = current;
- unsigned char tcomm[sizeof(me->comm)];
-
- get_task_comm(tcomm, me);
- if (copy_to_user((char __user *)arg2, tcomm, sizeof(tcomm)))
+ case PR_GET_NAME:
+ get_task_comm(comm, me);
+ if (copy_to_user((char __user *)arg2, comm,
+ sizeof(comm)))
return -EFAULT;
return 0;
- }
case PR_GET_ENDIAN:
- error = GET_ENDIAN(current, arg2);
+ error = GET_ENDIAN(me, arg2);
break;
case PR_SET_ENDIAN:
- error = SET_ENDIAN(current, arg2);
+ error = SET_ENDIAN(me, arg2);
break;

case PR_GET_SECCOMP:
@@ -1745,7 +1777,7 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
case PR_CAPBSET_READ:
if (!cap_valid(arg2))
return -EINVAL;
- return !!cap_raised(current->cap_bset, arg2);
+ return !!cap_raised(sec->cap_bset, arg2);
case PR_CAPBSET_DROP:
#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
return cap_prctl_drop(arg2);
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8c98d81..2dcab35 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1514,7 +1514,7 @@ out:

static int test_perm(int mode, int op)
{
- if (!current->euid)
+ if (!current->act_as->euid)
mode >>= 6;
else if (in_egroup_p(0))
mode >>= 3;
diff --git a/kernel/timer.c b/kernel/timer.c
index 70b29b5..4a4c77e 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -988,25 +988,25 @@ asmlinkage long sys_getppid(void)
asmlinkage long sys_getuid(void)
{
/* Only we change this so SMP safe */
- return current->uid;
+ return current->sec->uid;
}

asmlinkage long sys_geteuid(void)
{
/* Only we change this so SMP safe */
- return current->euid;
+ return current->sec->euid;
}

asmlinkage long sys_getgid(void)
{
/* Only we change this so SMP safe */
- return current->gid;
+ return current->sec->gid;
}

asmlinkage long sys_getegid(void)
{
/* Only we change this so SMP safe */
- return current->egid;
+ return current->sec->egid;
}

#endif
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 4ab1b58..84c98ee 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -53,8 +53,8 @@ void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk)
stats->ac_flag |= AXSIG;
stats->ac_nice = task_nice(tsk);
stats->ac_sched = tsk->policy;
- stats->ac_uid = tsk->uid;
- stats->ac_gid = tsk->gid;
+ stats->ac_uid = tsk->sec->uid;
+ stats->ac_gid = tsk->sec->gid;
stats->ac_pid = tsk->pid;
rcu_read_lock();
stats->ac_ppid = pid_alive(tsk) ?
diff --git a/kernel/uid16.c b/kernel/uid16.c
index dd308ba..c56f6fe 100644
--- a/kernel/uid16.c
+++ b/kernel/uid16.c
@@ -86,9 +86,9 @@ asmlinkage long sys_getresuid16(old_uid_t __user *ruid, old_uid_t __user *euid,
{
int retval;

- if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
- !(retval = put_user(high2lowuid(current->euid), euid)))
- retval = put_user(high2lowuid(current->suid), suid);
+ if (!(retval = put_user(high2lowuid(current->sec->uid), ruid)) &&
+ !(retval = put_user(high2lowuid(current->sec->euid), euid)))
+ retval = put_user(high2lowuid(current->sec->suid), suid);

return retval;
}
@@ -106,9 +106,9 @@ asmlinkage long sys_getresgid16(old_gid_t __user *rgid, old_gid_t __user *egid,
{
int retval;

- if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
- !(retval = put_user(high2lowgid(current->egid), egid)))
- retval = put_user(high2lowgid(current->sgid), sgid);
+ if (!(retval = put_user(high2lowgid(current->sec->gid), rgid)) &&
+ !(retval = put_user(high2lowgid(current->sec->egid), egid)))
+ retval = put_user(high2lowgid(current->sec->sgid), sgid);

return retval;
}
@@ -166,20 +166,20 @@ asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist)
if (gidsetsize < 0)
return -EINVAL;

- get_group_info(current->group_info);
- i = current->group_info->ngroups;
+ get_group_info(current->sec->group_info);
+ i = current->sec->group_info->ngroups;
if (gidsetsize) {
if (i > gidsetsize) {
i = -EINVAL;
goto out;
}
- if (groups16_to_user(grouplist, current->group_info)) {
+ if (groups16_to_user(grouplist, current->sec->group_info)) {
i = -EFAULT;
goto out;
}
}
out:
- put_group_info(current->group_info);
+ put_group_info(current->sec->group_info);
return i;
}

@@ -210,20 +210,20 @@ asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist)

asmlinkage long sys_getuid16(void)
{
- return high2lowuid(current->uid);
+ return high2lowuid(current->sec->uid);
}

asmlinkage long sys_geteuid16(void)
{
- return high2lowuid(current->euid);
+ return high2lowuid(current->sec->euid);
}

asmlinkage long sys_getgid16(void)
{
- return high2lowgid(current->gid);
+ return high2lowgid(current->sec->gid);
}

asmlinkage long sys_getegid16(void)
{
- return high2lowgid(current->egid);
+ return high2lowgid(current->sec->egid);
}
diff --git a/kernel/user.c b/kernel/user.c
index bc1c48d..3a2151d 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -406,11 +406,11 @@ void switch_uid(struct user_struct *new_user)
* cheaply with the new uid cache, so if it matters
* we should be checking for it. -DaveM
*/
- old_user = current->user;
+ old_user = current->sec->user;
atomic_inc(&new_user->processes);
atomic_dec(&old_user->processes);
switch_uid_keyring(new_user);
- current->user = new_user;
+ current->sec->user = new_user;
sched_switch_user(current);

/*
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 7af90fc..fef8023 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -49,7 +49,7 @@ static struct user_namespace *clone_user_ns(struct user_namespace *old_ns)
}

/* Reset current->user with a new one */
- new_user = alloc_uid(ns, current->uid);
+ new_user = alloc_uid(ns, current->sec->uid);
if (!new_user) {
free_uid(ns->root_user);
kfree(ns);
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 83c69f8..f7a3078 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -941,6 +941,7 @@ asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
const unsigned long __user *old_nodes,
const unsigned long __user *new_nodes)
{
+ struct task_security *act_as, *obj;
struct mm_struct *mm;
struct task_struct *task;
nodemask_t old;
@@ -975,8 +976,10 @@ asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
* capabilities, superuser privileges or the same
* userid as the target process.
*/
- if ((current->euid != task->suid) && (current->euid != task->uid) &&
- (current->uid != task->suid) && (current->uid != task->uid) &&
+ act_as = current->act_as;
+ obj = task->sec;
+ if ((act_as->euid != obj->suid) && (act_as->euid != obj->uid) &&
+ (act_as->uid != obj->suid) && (act_as->uid != obj->uid) &&
!capable(CAP_SYS_NICE)) {
err = -EPERM;
goto out;
diff --git a/mm/migrate.c b/mm/migrate.c
index a73504f..75ae1fb 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -935,6 +935,7 @@ asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
const int __user *nodes,
int __user *status, int flags)
{
+ struct task_security *act_as, *obj;
int err = 0;
int i;
struct task_struct *task;
@@ -968,8 +969,10 @@ asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
* capabilities, superuser privileges or the same
* userid as the target process.
*/
- if ((current->euid != task->suid) && (current->euid != task->uid) &&
- (current->uid != task->suid) && (current->uid != task->uid) &&
+ act_as = current->act_as;
+ obj = task->sec;
+ if ((act_as->euid != obj->suid) && (act_as->euid != obj->uid) &&
+ (act_as->uid != obj->suid) && (act_as->uid != obj->uid) &&
!capable(CAP_SYS_NICE)) {
err = -EPERM;
goto out2;
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 4194b9d..82a6710 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -291,7 +291,7 @@ static void dump_tasks(const struct mem_cgroup *mem)

task_lock(p);
printk(KERN_INFO "[%5d] %5d %5d %8lu %8lu %3d %3d %s\n",
- p->pid, p->uid, p->tgid, p->mm->total_vm,
+ p->pid, p->sec->uid, p->tgid, p->mm->total_vm,
get_mm_rss(p->mm), (int)task_cpu(p), p->oomkilladj,
p->comm);
task_unlock(p);
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 8fc64e3..a205008 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1048,7 +1048,7 @@ static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
if (addr->fsa_ax25.sax25_family != AF_AX25)
return -EINVAL;

- user = ax25_findbyuid(current->euid);
+ user = ax25_findbyuid(current->act_as->euid);
if (user) {
call = user->call;
ax25_uid_put(user);
diff --git a/net/ax25/ax25_route.c b/net/ax25/ax25_route.c
index 38c7f30..0402059 100644
--- a/net/ax25/ax25_route.c
+++ b/net/ax25/ax25_route.c
@@ -421,7 +421,7 @@ int ax25_rt_autobind(ax25_cb *ax25, ax25_address *addr)
goto put;
}

- user = ax25_findbyuid(current->euid);
+ user = ax25_findbyuid(current->act_as->euid);
if (user) {
ax25->source_addr = user->call;
ax25_uid_put(user);
diff --git a/net/core/dev.c b/net/core/dev.c
index 9549417..0a26796 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2759,7 +2759,7 @@ static void __dev_set_promiscuity(struct net_device *dev, int inc)
dev->name, (dev->flags & IFF_PROMISC),
(old_flags & IFF_PROMISC),
audit_get_loginuid(current),
- current->uid, current->gid,
+ current->act_as->uid, current->act_as->gid,
audit_get_sessionid(current));

if (dev->change_rx_flags)
diff --git a/net/core/scm.c b/net/core/scm.c
index 10f5c65..703b174 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -44,11 +44,13 @@

static __inline__ int scm_check_creds(struct ucred *creds)
{
+ struct task_security *sec = current->act_as;
+
if ((creds->pid == task_tgid_vnr(current) || capable(CAP_SYS_ADMIN)) &&
- ((creds->uid == current->uid || creds->uid == current->euid ||
- creds->uid == current->suid) || capable(CAP_SETUID)) &&
- ((creds->gid == current->gid || creds->gid == current->egid ||
- creds->gid == current->sgid) || capable(CAP_SETGID))) {
+ ((creds->uid == sec->uid || creds->uid == sec->euid ||
+ creds->uid == sec->suid) || capable(CAP_SETUID)) &&
+ ((creds->gid == sec->gid || creds->gid == sec->egid ||
+ creds->gid == sec->sgid) || capable(CAP_SETGID))) {
return 0;
}
return -EPERM;
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 2b7d9ee..bda7783 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -364,7 +364,7 @@ fl_create(struct in6_flowlabel_req *freq, char __user *optval, int optlen, int *
fl->owner = current->pid;
break;
case IPV6_FL_S_USER:
- fl->owner = current->euid;
+ fl->owner = current->act_as->euid;
break;
default:
err = -EINVAL;
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 972250c..2471ff9 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -599,7 +599,7 @@ static int nr_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
} else {
source = &addr->fsa_ax25.sax25_call;

- user = ax25_findbyuid(current->euid);
+ user = ax25_findbyuid(current->act_as->euid);
if (user) {
nr->user_addr = user->call;
ax25_uid_put(user);
@@ -673,7 +673,7 @@ static int nr_connect(struct socket *sock, struct sockaddr *uaddr,
}
source = (ax25_address *)dev->dev_addr;

- user = ax25_findbyuid(current->euid);
+ user = ax25_findbyuid(current->act_as->euid);
if (user) {
nr->user_addr = user->call;
ax25_uid_put(user);
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 4a31a81..53ff9ce 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -669,7 +669,7 @@ static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)

source = &addr->srose_call;

- user = ax25_findbyuid(current->euid);
+ user = ax25_findbyuid(current->act_as->euid);
if (user) {
rose->source_call = user->call;
ax25_uid_put(user);
@@ -768,7 +768,7 @@ static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_le
goto out_release;
}

- user = ax25_findbyuid(current->euid);
+ user = ax25_findbyuid(current->act_as->euid);
if (!user) {
err = -EINVAL;
goto out_release;
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 83e60f8..01e25a2 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -345,7 +345,7 @@ rpcauth_lookupcred(struct rpc_auth *auth, int flags)
struct auth_cred acred = {
.uid = current_fsuid(),
.gid = current_fsgid(),
- .group_info = current->group_info,
+ .group_info = current->act_as->group_info,
};
struct rpc_cred *ret;

@@ -382,7 +382,7 @@ rpcauth_bindcred(struct rpc_task *task)
struct auth_cred acred = {
.uid = current_fsuid(),
.gid = current_fsgid(),
- .group_info = current->group_info,
+ .group_info = current->act_as->group_info,
};
struct rpc_cred *ret;
int flags = 0;
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index eea7588..5670a62 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -464,8 +464,8 @@ static int unix_listen(struct socket *sock, int backlog)
sk->sk_state = TCP_LISTEN;
/* set credentials so connect can copy them */
sk->sk_peercred.pid = task_tgid_vnr(current);
- sk->sk_peercred.uid = current->euid;
- sk->sk_peercred.gid = current->egid;
+ sk->sk_peercred.uid = current->act_as->euid;
+ sk->sk_peercred.gid = current->act_as->egid;
err = 0;

out_unlock:
@@ -1117,8 +1117,8 @@ restart:
newsk->sk_state = TCP_ESTABLISHED;
newsk->sk_type = sk->sk_type;
newsk->sk_peercred.pid = task_tgid_vnr(current);
- newsk->sk_peercred.uid = current->euid;
- newsk->sk_peercred.gid = current->egid;
+ newsk->sk_peercred.uid = current->act_as->euid;
+ newsk->sk_peercred.gid = current->act_as->egid;
newu = unix_sk(newsk);
newsk->sk_sleep = &newu->peer_wait;
otheru = unix_sk(other);
@@ -1178,8 +1178,8 @@ static int unix_socketpair(struct socket *socka, struct socket *sockb)
unix_peer(ska)=skb;
unix_peer(skb)=ska;
ska->sk_peercred.pid = skb->sk_peercred.pid = task_tgid_vnr(current);
- ska->sk_peercred.uid = skb->sk_peercred.uid = current->euid;
- ska->sk_peercred.gid = skb->sk_peercred.gid = current->egid;
+ ska->sk_peercred.uid = skb->sk_peercred.uid = current->act_as->euid;
+ ska->sk_peercred.gid = skb->sk_peercred.gid = current->act_as->egid;

if (ska->sk_type != SOCK_DGRAM) {
ska->sk_state = TCP_ESTABLISHED;
diff --git a/security/commoncap.c b/security/commoncap.c
index c340f53..9f8c89f 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -32,7 +32,7 @@ EXPORT_SYMBOL(securebits);

int cap_netlink_send(struct sock *sk, struct sk_buff *skb)
{
- NETLINK_CB(skb).eff_cap = current->cap_effective;
+ NETLINK_CB(skb).eff_cap = current_cap();
return 0;
}

@@ -54,7 +54,7 @@ EXPORT_SYMBOL(cap_netlink_recv);
int cap_capable (struct task_struct *tsk, int cap)
{
/* Derived from include/linux/sched.h:capable. */
- if (cap_raised(tsk->cap_effective, cap))
+ if (cap_raised(tsk->act_as->cap_effective, cap))
return 0;
return -EPERM;
}
@@ -69,7 +69,8 @@ int cap_settime(struct timespec *ts, struct timezone *tz)
int cap_ptrace (struct task_struct *parent, struct task_struct *child)
{
/* Derived from arch/i386/kernel/ptrace.c:sys_ptrace. */
- if (!cap_issubset(child->cap_permitted, parent->cap_permitted) &&
+ if (!cap_issubset(child->sec->cap_permitted,
+ parent->act_as->cap_permitted) &&
!__capable(parent, CAP_SYS_PTRACE))
return -EPERM;
return 0;
@@ -78,10 +79,12 @@ int cap_ptrace (struct task_struct *parent, struct task_struct *child)
int cap_capget (struct task_struct *target, kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted)
{
+ struct task_security *sec = target->sec;
+
/* Derived from kernel/capability.c:sys_capget. */
- *effective = target->cap_effective;
- *inheritable = target->cap_inheritable;
- *permitted = target->cap_permitted;
+ *effective = sec->cap_effective;
+ *inheritable = sec->cap_inheritable;
+ *permitted = sec->cap_permitted;
return 0;
}

@@ -116,13 +119,16 @@ static inline int cap_inh_is_capped(void) { return 1; }
int cap_capset_check (struct task_struct *target, kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted)
{
+ struct task_security *act_as = current->act_as;
+ struct task_security *sec = target->sec;
+
if (cap_block_setpcap(target)) {
return -EPERM;
}
if (cap_inh_is_capped()
&& !cap_issubset(*inheritable,
- cap_combine(target->cap_inheritable,
- current->cap_permitted))) {
+ cap_combine(sec->cap_inheritable,
+ act_as->cap_permitted))) {
/* incapable of using this inheritable set */
return -EPERM;
}
@@ -135,8 +141,8 @@ int cap_capset_check (struct task_struct *target, kernel_cap_t *effective,

/* verify restrictions on target's new Permitted set */
if (!cap_issubset (*permitted,
- cap_combine (target->cap_permitted,
- current->cap_permitted))) {
+ cap_combine (sec->cap_permitted,
+ act_as->cap_permitted))) {
return -EPERM;
}

@@ -151,9 +157,11 @@ int cap_capset_check (struct task_struct *target, kernel_cap_t *effective,
void cap_capset_set (struct task_struct *target, kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted)
{
- target->cap_effective = *effective;
- target->cap_inheritable = *inheritable;
- target->cap_permitted = *permitted;
+ struct task_security *sec = target->sec;
+
+ sec->cap_effective = *effective;
+ sec->cap_inheritable = *inheritable;
+ sec->cap_permitted = *permitted;
}

static inline void bprm_clear_caps(struct linux_binprm *bprm)
@@ -313,7 +321,7 @@ int cap_bprm_set_security (struct linux_binprm *bprm)
*/

if (!issecure (SECURE_NOROOT)) {
- if (bprm->e_uid == 0 || current->uid == 0) {
+ if (bprm->e_uid == 0 || current->sec->uid == 0) {
cap_set_full (bprm->cap_inheritable);
cap_set_full (bprm->cap_permitted);
}
@@ -326,54 +334,55 @@ int cap_bprm_set_security (struct linux_binprm *bprm)

void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
{
+ struct task_security *sec = current->sec;
/* Derived from fs/exec.c:compute_creds. */
kernel_cap_t new_permitted, working;

- new_permitted = cap_intersect(bprm->cap_permitted,
- current->cap_bset);
- working = cap_intersect(bprm->cap_inheritable,
- current->cap_inheritable);
+ new_permitted = cap_intersect(bprm->cap_permitted, sec->cap_bset);
+ working = cap_intersect(bprm->cap_inheritable, sec->cap_inheritable);
new_permitted = cap_combine(new_permitted, working);

- if (bprm->e_uid != current->uid || bprm->e_gid != current->gid ||
- !cap_issubset (new_permitted, current->cap_permitted)) {
+ if (bprm->e_uid != sec->uid || bprm->e_gid != sec->gid ||
+ !cap_issubset (new_permitted, sec->cap_permitted)) {
set_dumpable(current->mm, suid_dumpable);
current->pdeath_signal = 0;

if (unsafe & ~LSM_UNSAFE_PTRACE_CAP) {
if (!capable(CAP_SETUID)) {
- bprm->e_uid = current->uid;
- bprm->e_gid = current->gid;
+ bprm->e_uid = sec->uid;
+ bprm->e_gid = sec->gid;
}
if (!capable (CAP_SETPCAP)) {
new_permitted = cap_intersect (new_permitted,
- current->cap_permitted);
+ sec->cap_permitted);
}
}
}

- current->suid = current->euid = current->fsuid = bprm->e_uid;
- current->sgid = current->egid = current->fsgid = bprm->e_gid;
+ sec->suid = sec->euid = sec->fsuid = bprm->e_uid;
+ sec->sgid = sec->egid = sec->fsgid = bprm->e_gid;

/* For init, we want to retain the capabilities set
* in the init_task struct. Thus we skip the usual
* capability rules */
if (!is_global_init(current)) {
- current->cap_permitted = new_permitted;
+ sec->cap_permitted = new_permitted;
if (bprm->cap_effective)
- current->cap_effective = new_permitted;
+ sec->cap_effective = new_permitted;
else
- cap_clear(current->cap_effective);
+ cap_clear(sec->cap_effective);
}

- /* AUD: Audit candidate if current->cap_effective is set */
+ /* AUD: Audit candidate if sec->cap_effective is set */

- current->keep_capabilities = 0;
+ sec->keep_capabilities = 0;
}

int cap_bprm_secureexec (struct linux_binprm *bprm)
{
- if (current->uid != 0) {
+ struct task_security *sec = current->sec;
+
+ if (sec->uid != 0) {
if (bprm->cap_effective)
return 1;
if (!cap_isclear(bprm->cap_permitted))
@@ -382,8 +391,8 @@ int cap_bprm_secureexec (struct linux_binprm *bprm)
return 1;
}

- return (current->euid != current->uid ||
- current->egid != current->gid);
+ return (sec->euid != sec->uid ||
+ sec->egid != sec->gid);
}

int cap_inode_setxattr(struct dentry *dentry, char *name, void *value,
@@ -446,23 +455,27 @@ int cap_inode_removexattr(struct dentry *dentry, char *name)
static inline void cap_emulate_setxuid (int old_ruid, int old_euid,
int old_suid)
{
+ struct task_security *sec = current->sec;
+
if ((old_ruid == 0 || old_euid == 0 || old_suid == 0) &&
- (current->uid != 0 && current->euid != 0 && current->suid != 0) &&
- !current->keep_capabilities) {
- cap_clear (current->cap_permitted);
- cap_clear (current->cap_effective);
+ (sec->uid != 0 && sec->euid != 0 && sec->suid != 0) &&
+ !sec->keep_capabilities) {
+ cap_clear (sec->cap_permitted);
+ cap_clear (sec->cap_effective);
}
- if (old_euid == 0 && current->euid != 0) {
- cap_clear (current->cap_effective);
+ if (old_euid == 0 && sec->euid != 0) {
+ cap_clear (sec->cap_effective);
}
- if (old_euid != 0 && current->euid == 0) {
- current->cap_effective = current->cap_permitted;
+ if (old_euid != 0 && sec->euid == 0) {
+ sec->cap_effective = sec->cap_permitted;
}
}

int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid,
int flags)
{
+ struct task_security *sec = current->sec;
+
switch (flags) {
case LSM_SETID_RE:
case LSM_SETID_ID:
@@ -484,16 +497,16 @@ int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid,
*/

if (!issecure (SECURE_NO_SETUID_FIXUP)) {
- if (old_fsuid == 0 && current_fsuid() != 0) {
+ if (old_fsuid == 0 && sec->fsuid != 0) {
current->cap_effective =
cap_drop_fs_set(
- current->cap_effective);
+ sec->cap_effective);
}
- if (old_fsuid != 0 && current_fsuid() == 0) {
+ if (old_fsuid != 0 && sec->fsuid == 0) {
current->cap_effective =
cap_raise_fs_set(
- current->cap_effective,
- current->cap_permitted);
+ sec->cap_effective,
+ sec->cap_permitted);
}
}
break;
@@ -518,7 +531,8 @@ int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid,
*/
static inline int cap_safe_nice(struct task_struct *p)
{
- if (!cap_issubset(p->cap_permitted, current->cap_permitted) &&
+ if (!cap_issubset(p->sec->cap_permitted,
+ current->act_as->cap_permitted) &&
!__capable(current, CAP_SYS_NICE))
return -EPERM;
return 0;
@@ -552,7 +566,7 @@ int cap_task_kill(struct task_struct *p, struct siginfo *info,
* allowed.
* We must preserve legacy signal behavior in this case.
*/
- if (p->euid == 0 && p->uid == current->uid)
+ if (p->sec->euid == 0 && p->sec->uid == current->act_as->uid)
return 0;

/* sigcont is permitted within same session */
@@ -567,7 +581,7 @@ int cap_task_kill(struct task_struct *p, struct siginfo *info,
* Used only by usb drivers?
*/
return 0;
- if (cap_issubset(p->cap_permitted, current->cap_permitted))
+ if (cap_issubset(p->sec->cap_permitted, current->act_as->cap_permitted))
return 0;
if (capable(CAP_KILL))
return 0;
@@ -588,7 +602,7 @@ long cap_prctl_drop(unsigned long cap)
return -EPERM;
if (!cap_valid(cap))
return -EINVAL;
- cap_lower(current->cap_bset, cap);
+ cap_lower(current->sec->cap_bset, cap);
return 0;
}
#else
@@ -614,11 +628,12 @@ int cap_task_kill(struct task_struct *p, struct siginfo *info,

void cap_task_reparent_to_init (struct task_struct *p)
{
- cap_set_init_eff(p->cap_effective);
- cap_clear(p->cap_inheritable);
- cap_set_full(p->cap_permitted);
- p->keep_capabilities = 0;
- return;
+ struct task_security *sec = p->sec;
+
+ cap_set_init_eff(sec->cap_effective);
+ cap_clear(sec->cap_inheritable);
+ cap_set_full(sec->cap_permitted);
+ sec->keep_capabilities = 0;
}

int cap_syslog (int type)
diff --git a/security/dummy.c b/security/dummy.c
index 6a0056b..28413ae 100644
--- a/security/dummy.c
+++ b/security/dummy.c
@@ -36,7 +36,7 @@ static int dummy_ptrace (struct task_struct *parent, struct task_struct *child)
static int dummy_capget (struct task_struct *target, kernel_cap_t * effective,
kernel_cap_t * inheritable, kernel_cap_t * permitted)
{
- if (target->euid == 0) {
+ if (target->sec->euid == 0) {
cap_set_full(*permitted);
cap_set_init_eff(*effective);
} else {
@@ -46,7 +46,7 @@ static int dummy_capget (struct task_struct *target, kernel_cap_t * effective,

cap_clear(*inheritable);

- if (target->fsuid != 0) {
+ if (target->sec->fsuid != 0) {
*permitted = cap_drop_fs_set(*permitted);
*effective = cap_drop_fs_set(*effective);
}
@@ -76,7 +76,7 @@ static int dummy_acct (struct file *file)

static int dummy_capable (struct task_struct *tsk, int cap)
{
- if (cap_raised (tsk->cap_effective, cap))
+ if (cap_raised(tsk->act_as->cap_effective, cap))
return 0;
return -EPERM;
}
@@ -98,7 +98,7 @@ static int dummy_quota_on (struct dentry *dentry)

static int dummy_syslog (int type)
{
- if ((type != 3 && type != 10) && current->euid)
+ if ((type != 3 && type != 10) && current->act_as->euid)
return -EPERM;
return 0;
}
@@ -131,19 +131,24 @@ static void dummy_bprm_free_security (struct linux_binprm *bprm)

static void dummy_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
{
- if (bprm->e_uid != current->uid || bprm->e_gid != current->gid) {
+ struct task_security *sec = current->sec;
+
+ if (bprm->e_uid != sec->uid || bprm->e_gid != sec->gid) {
set_dumpable(current->mm, suid_dumpable);

if ((unsafe & ~LSM_UNSAFE_PTRACE_CAP) && !capable(CAP_SETUID)) {
- bprm->e_uid = current->uid;
- bprm->e_gid = current->gid;
+ bprm->e_uid = sec->uid;
+ bprm->e_gid = sec->gid;
}
}

- current->suid = current->euid = current->fsuid = bprm->e_uid;
- current->sgid = current->egid = current->fsgid = bprm->e_gid;
+ sec->suid = sec->euid = sec->fsuid = bprm->e_uid;
+ sec->sgid = sec->egid = sec->fsgid = bprm->e_gid;

- dummy_capget(current, &current->cap_effective, &current->cap_inheritable, &current->cap_permitted);
+ dummy_capget(current,
+ &sec->cap_effective,
+ &sec->cap_inheritable,
+ &sec->cap_permitted);
}

static void dummy_bprm_post_apply_creds (struct linux_binprm *bprm)
@@ -167,8 +172,8 @@ static int dummy_bprm_secureexec (struct linux_binprm *bprm)
in the AT_SECURE field to decide whether secure mode
is required. Hence, this logic is required to preserve
the legacy decision algorithm used by the old userland. */
- return (current->euid != current->uid ||
- current->egid != current->gid);
+ return (current->sec->euid != current->sec->uid ||
+ current->sec->egid != current->sec->gid);
}

static int dummy_sb_alloc_security (struct super_block *sb)
@@ -515,7 +520,12 @@ static int dummy_task_setuid (uid_t id0, uid_t id1, uid_t id2, int flags)

static int dummy_task_post_setuid (uid_t id0, uid_t id1, uid_t id2, int flags)
{
- dummy_capget(current, &current->cap_effective, &current->cap_inheritable, &current->cap_permitted);
+ struct task_security *sec = current->sec;
+
+ dummy_capget(current,
+ &sec->cap_effective,
+ &sec->cap_inheritable,
+ &sec->cap_permitted);
return 0;
}

@@ -602,7 +612,7 @@ static int dummy_task_prctl (int option, unsigned long arg2, unsigned long arg3,

static void dummy_task_reparent_to_init (struct task_struct *p)
{
- p->euid = p->fsuid = 0;
+ p->sec->euid = p->sec->fsuid = 0;
return;
}

@@ -712,7 +722,7 @@ static int dummy_sem_semop (struct sem_array *sma,

static int dummy_netlink_send (struct sock *sk, struct sk_buff *skb)
{
- NETLINK_CB(skb).eff_cap = current->cap_effective;
+ NETLINK_CB(skb).eff_cap = current->act_as->cap_effective;
return 0;
}

diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index b3a63dd..4051948 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -846,7 +846,7 @@ long keyctl_instantiate_key(key_serial_t id,
/* the appropriate instantiation authorisation key must have been
* assumed before calling this */
ret = -EPERM;
- instkey = current->request_key_auth;
+ instkey = current->sec->request_key_auth;
if (!instkey)
goto error;

@@ -895,8 +895,8 @@ long keyctl_instantiate_key(key_serial_t id,
/* discard the assumed authority if it's just been disabled by
* instantiation of the key */
if (ret == 0) {
- key_put(current->request_key_auth);
- current->request_key_auth = NULL;
+ key_put(current->sec->request_key_auth);
+ current->sec->request_key_auth = NULL;
}

error2:
@@ -924,7 +924,7 @@ long keyctl_negate_key(key_serial_t id, unsigned timeout, key_serial_t ringid)
/* the appropriate instantiation authorisation key must have been
* assumed before calling this */
ret = -EPERM;
- instkey = current->request_key_auth;
+ instkey = current->sec->request_key_auth;
if (!instkey)
goto error;

@@ -952,8 +952,8 @@ long keyctl_negate_key(key_serial_t id, unsigned timeout, key_serial_t ringid)
/* discard the assumed authority if it's just been disabled by
* instantiation of the key */
if (ret == 0) {
- key_put(current->request_key_auth);
- current->request_key_auth = NULL;
+ key_put(current->sec->request_key_auth);
+ current->sec->request_key_auth = NULL;
}

error:
@@ -968,6 +968,7 @@ error:
*/
long keyctl_set_reqkey_keyring(int reqkey_defl)
{
+ struct task_security *sec = current->sec;
int ret;

switch (reqkey_defl) {
@@ -987,10 +988,10 @@ long keyctl_set_reqkey_keyring(int reqkey_defl)
case KEY_REQKEY_DEFL_USER_KEYRING:
case KEY_REQKEY_DEFL_USER_SESSION_KEYRING:
set:
- current->jit_keyring = reqkey_defl;
+ sec->jit_keyring = reqkey_defl;

case KEY_REQKEY_DEFL_NO_CHANGE:
- return current->jit_keyring;
+ return sec->jit_keyring;

case KEY_REQKEY_DEFL_GROUP_KEYRING:
default:
@@ -1055,8 +1056,8 @@ long keyctl_assume_authority(key_serial_t id)

/* we divest ourselves of authority if given an ID of 0 */
if (id == 0) {
- key_put(current->request_key_auth);
- current->request_key_auth = NULL;
+ key_put(current->sec->request_key_auth);
+ current->sec->request_key_auth = NULL;
ret = 0;
goto error;
}
@@ -1072,8 +1073,8 @@ long keyctl_assume_authority(key_serial_t id)
goto error;
}

- key_put(current->request_key_auth);
- current->request_key_auth = authkey;
+ key_put(current->sec->request_key_auth);
+ current->sec->request_key_auth = authkey;
ret = authkey->serial;

error:
diff --git a/security/keys/permission.c b/security/keys/permission.c
index 3b41f9b..07898bd 100644
--- a/security/keys/permission.c
+++ b/security/keys/permission.c
@@ -22,6 +22,7 @@ int key_task_permission(const key_ref_t key_ref,
struct task_struct *context,
key_perm_t perm)
{
+ struct task_security *sec = context->act_as;
struct key *key;
key_perm_t kperm;
int ret;
@@ -29,7 +30,7 @@ int key_task_permission(const key_ref_t key_ref,
key = key_ref_to_ptr(key_ref);

/* use the second 8-bits of permissions for keys the caller owns */
- if (key->uid == context->fsuid) {
+ if (key->uid == sec->fsuid) {
kperm = key->perm >> 16;
goto use_these_perms;
}
@@ -37,14 +38,14 @@ int key_task_permission(const key_ref_t key_ref,
/* use the third 8-bits of permissions for keys the caller has a group
* membership in common with */
if (key->gid != -1 && key->perm & KEY_GRP_ALL) {
- if (key->gid == context->fsgid) {
+ if (key->gid == sec->fsgid) {
kperm = key->perm >> 8;
goto use_these_perms;
}

- task_lock(context);
- ret = groups_search(context->group_info, key->gid);
- task_unlock(context);
+ spin_lock(&sec->lock);
+ ret = groups_search(sec->group_info, key->gid);
+ spin_unlock(&sec->lock);

if (ret) {
kperm = key->perm >> 8;
diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index c886a2b..a016e9b 100644
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -145,7 +145,7 @@ int install_thread_keyring(struct task_struct *tsk)

sprintf(buf, "_tid.%u", tsk->pid);

- keyring = keyring_alloc(buf, tsk->uid, tsk->gid, tsk,
+ keyring = keyring_alloc(buf, tsk->sec->uid, tsk->sec->gid, tsk,
KEY_ALLOC_QUOTA_OVERRUN, NULL);
if (IS_ERR(keyring)) {
ret = PTR_ERR(keyring);
@@ -153,8 +153,8 @@ int install_thread_keyring(struct task_struct *tsk)
}

task_lock(tsk);
- old = tsk->thread_keyring;
- tsk->thread_keyring = keyring;
+ old = tsk->sec->thread_keyring;
+ tsk->sec->thread_keyring = keyring;
task_unlock(tsk);

ret = 0;
@@ -180,7 +180,7 @@ int install_process_keyring(struct task_struct *tsk)
if (!tsk->signal->process_keyring) {
sprintf(buf, "_pid.%u", tsk->tgid);

- keyring = keyring_alloc(buf, tsk->uid, tsk->gid, tsk,
+ keyring = keyring_alloc(buf, tsk->sec->uid, tsk->sec->gid, tsk,
KEY_ALLOC_QUOTA_OVERRUN, NULL);
if (IS_ERR(keyring)) {
ret = PTR_ERR(keyring);
@@ -226,7 +226,7 @@ static int install_session_keyring(struct task_struct *tsk,
if (tsk->signal->session_keyring)
flags = KEY_ALLOC_IN_QUOTA;

- keyring = keyring_alloc(buf, tsk->uid, tsk->gid, tsk,
+ keyring = keyring_alloc(buf, tsk->sec->uid, tsk->sec->gid, tsk,
flags, NULL);
if (IS_ERR(keyring))
return PTR_ERR(keyring);
@@ -280,14 +280,14 @@ int copy_thread_group_keys(struct task_struct *tsk)
*/
int copy_keys(unsigned long clone_flags, struct task_struct *tsk)
{
- key_check(tsk->thread_keyring);
- key_check(tsk->request_key_auth);
+ key_check(tsk->sec->thread_keyring);
+ key_check(tsk->sec->request_key_auth);

/* no thread keyring yet */
- tsk->thread_keyring = NULL;
+ tsk->sec->thread_keyring = NULL;

/* copy the request_key() authorisation for this thread */
- key_get(tsk->request_key_auth);
+ key_get(tsk->sec->request_key_auth);

return 0;

@@ -310,8 +310,8 @@ void exit_thread_group_keys(struct signal_struct *tg)
*/
void exit_keys(struct task_struct *tsk)
{
- key_put(tsk->thread_keyring);
- key_put(tsk->request_key_auth);
+ key_put(tsk->sec->thread_keyring);
+ key_put(tsk->sec->request_key_auth);

} /* end exit_keys() */

@@ -325,8 +325,8 @@ int exec_keys(struct task_struct *tsk)

/* newly exec'd tasks don't get a thread keyring */
task_lock(tsk);
- old = tsk->thread_keyring;
- tsk->thread_keyring = NULL;
+ old = tsk->sec->thread_keyring;
+ tsk->sec->thread_keyring = NULL;
task_unlock(tsk);

key_put(old);
@@ -361,10 +361,11 @@ int suid_keys(struct task_struct *tsk)
void key_fsuid_changed(struct task_struct *tsk)
{
/* update the ownership of the thread keyring */
- if (tsk->thread_keyring) {
- down_write(&tsk->thread_keyring->sem);
- tsk->thread_keyring->uid = tsk->fsuid;
- up_write(&tsk->thread_keyring->sem);
+ BUG_ON(!tsk->sec);
+ if (tsk->sec->thread_keyring) {
+ down_write(&tsk->sec->thread_keyring->sem);
+ tsk->sec->thread_keyring->uid = tsk->sec->fsuid;
+ up_write(&tsk->sec->thread_keyring->sem);
}

} /* end key_fsuid_changed() */
@@ -376,10 +377,11 @@ void key_fsuid_changed(struct task_struct *tsk)
void key_fsgid_changed(struct task_struct *tsk)
{
/* update the ownership of the thread keyring */
- if (tsk->thread_keyring) {
- down_write(&tsk->thread_keyring->sem);
- tsk->thread_keyring->gid = tsk->fsgid;
- up_write(&tsk->thread_keyring->sem);
+ BUG_ON(!tsk->sec);
+ if (tsk->sec->thread_keyring) {
+ down_write(&tsk->sec->thread_keyring->sem);
+ tsk->sec->thread_keyring->gid = tsk->sec->fsgid;
+ up_write(&tsk->sec->thread_keyring->sem);
}

} /* end key_fsgid_changed() */
@@ -414,9 +416,9 @@ key_ref_t search_process_keyrings(struct key_type *type,
err = ERR_PTR(-EAGAIN);

/* search the thread keyring first */
- if (context->thread_keyring) {
+ if (context->sec->thread_keyring) {
key_ref = keyring_search_aux(
- make_key_ref(context->thread_keyring, 1),
+ make_key_ref(context->sec->thread_keyring, 1),
context, type, description, match);
if (!IS_ERR(key_ref))
goto found;
@@ -483,7 +485,7 @@ key_ref_t search_process_keyrings(struct key_type *type,
/* or search the user-session keyring */
else {
key_ref = keyring_search_aux(
- make_key_ref(context->user->session_keyring, 1),
+ make_key_ref(context->sec->user->session_keyring, 1),
context, type, description, match);
if (!IS_ERR(key_ref))
goto found;
@@ -505,20 +507,20 @@ key_ref_t search_process_keyrings(struct key_type *type,
* search the keyrings of the process mentioned there
* - we don't permit access to request_key auth keys via this method
*/
- if (context->request_key_auth &&
+ if (context->sec->request_key_auth &&
context == current &&
type != &key_type_request_key_auth
) {
/* defend against the auth key being revoked */
- down_read(&context->request_key_auth->sem);
+ down_read(&context->sec->request_key_auth->sem);

- if (key_validate(context->request_key_auth) == 0) {
- rka = context->request_key_auth->payload.data;
+ if (key_validate(context->sec->request_key_auth) == 0) {
+ rka = context->sec->request_key_auth->payload.data;

key_ref = search_process_keyrings(type, description,
match, rka->context);

- up_read(&context->request_key_auth->sem);
+ up_read(&context->sec->request_key_auth->sem);

if (!IS_ERR(key_ref))
goto found;
@@ -535,7 +537,7 @@ key_ref_t search_process_keyrings(struct key_type *type,
break;
}
} else {
- up_read(&context->request_key_auth->sem);
+ up_read(&context->sec->request_key_auth->sem);
}
}

@@ -577,7 +579,7 @@ key_ref_t lookup_user_key(struct task_struct *context, key_serial_t id,

switch (id) {
case KEY_SPEC_THREAD_KEYRING:
- if (!context->thread_keyring) {
+ if (!context->sec->thread_keyring) {
if (!create)
goto error;

@@ -588,7 +590,7 @@ key_ref_t lookup_user_key(struct task_struct *context, key_serial_t id,
}
}

- key = context->thread_keyring;
+ key = context->sec->thread_keyring;
atomic_inc(&key->usage);
key_ref = make_key_ref(key, 1);
break;
@@ -615,7 +617,7 @@ key_ref_t lookup_user_key(struct task_struct *context, key_serial_t id,
/* always install a session keyring upon access if one
* doesn't exist yet */
ret = install_session_keyring(
- context, context->user->session_keyring);
+ context, context->sec->user->session_keyring);
if (ret < 0)
goto error;
}
@@ -628,13 +630,13 @@ key_ref_t lookup_user_key(struct task_struct *context, key_serial_t id,
break;

case KEY_SPEC_USER_KEYRING:
- key = context->user->uid_keyring;
+ key = context->sec->user->uid_keyring;
atomic_inc(&key->usage);
key_ref = make_key_ref(key, 1);
break;

case KEY_SPEC_USER_SESSION_KEYRING:
- key = context->user->session_keyring;
+ key = context->sec->user->session_keyring;
atomic_inc(&key->usage);
key_ref = make_key_ref(key, 1);
break;
@@ -645,7 +647,7 @@ key_ref_t lookup_user_key(struct task_struct *context, key_serial_t id,
goto error;

case KEY_SPEC_REQKEY_AUTH_KEY:
- key = context->request_key_auth;
+ key = context->sec->request_key_auth;
if (!key)
goto error;

@@ -747,7 +749,7 @@ long join_session_keyring(const char *name)
keyring = find_keyring_by_name(name, 0);
if (PTR_ERR(keyring) == -ENOKEY) {
/* not found - try and create a new one */
- keyring = keyring_alloc(name, tsk->uid, tsk->gid, tsk,
+ keyring = keyring_alloc(name, tsk->sec->uid, tsk->sec->gid, tsk,
KEY_ALLOC_IN_QUOTA, NULL);
if (IS_ERR(keyring)) {
ret = PTR_ERR(keyring);
diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index 21efac2..5b5ad42 100644
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -97,7 +97,8 @@ static int call_sbin_request_key(struct key_construction *cons,

/* we specify the process's default keyrings */
sprintf(keyring_str[0], "%d",
- tsk->thread_keyring ? tsk->thread_keyring->serial : 0);
+ tsk->act_as->thread_keyring ?
+ tsk->act_as->thread_keyring->serial : 0);

prkey = 0;
if (tsk->signal->process_keyring)
@@ -110,7 +111,7 @@ static int call_sbin_request_key(struct key_construction *cons,
sskey = rcu_dereference(tsk->signal->session_keyring)->serial;
rcu_read_unlock();
} else {
- sskey = tsk->user->session_keyring->serial;
+ sskey = tsk->act_as->user->session_keyring->serial;
}

sprintf(keyring_str[2], "%d", sskey);
@@ -216,10 +217,10 @@ static void construct_key_make_link(struct key *key, struct key *dest_keyring)

/* find the appropriate keyring */
if (!dest_keyring) {
- switch (tsk->jit_keyring) {
+ switch (tsk->act_as->jit_keyring) {
case KEY_REQKEY_DEFL_DEFAULT:
case KEY_REQKEY_DEFL_THREAD_KEYRING:
- dest_keyring = tsk->thread_keyring;
+ dest_keyring = tsk->act_as->thread_keyring;
if (dest_keyring)
break;

@@ -239,11 +240,11 @@ static void construct_key_make_link(struct key *key, struct key *dest_keyring)
break;

case KEY_REQKEY_DEFL_USER_SESSION_KEYRING:
- dest_keyring = tsk->user->session_keyring;
+ dest_keyring = tsk->act_as->user->session_keyring;
break;

case KEY_REQKEY_DEFL_USER_KEYRING:
- dest_keyring = tsk->user->uid_keyring;
+ dest_keyring = tsk->act_as->user->uid_keyring;
break;

case KEY_REQKEY_DEFL_GROUP_KEYRING:
diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c
index 980d8cb..d306412 100644
--- a/security/keys/request_key_auth.c
+++ b/security/keys/request_key_auth.c
@@ -162,22 +162,22 @@ struct key *request_key_auth_new(struct key *target, const void *callout_info,

/* see if the calling process is already servicing the key request of
* another process */
- if (current->request_key_auth) {
+ if (current->act_as->request_key_auth) {
/* it is - use that instantiation context here too */
- down_read(&current->request_key_auth->sem);
+ down_read(&current->act_as->request_key_auth->sem);

/* if the auth key has been revoked, then the key we're
* servicing is already instantiated */
if (test_bit(KEY_FLAG_REVOKED,
- &current->request_key_auth->flags))
+ &current->act_as->request_key_auth->flags))
goto auth_key_revoked;

- irka = current->request_key_auth->payload.data;
+ irka = current->act_as->request_key_auth->payload.data;
rka->context = irka->context;
rka->pid = irka->pid;
get_task_struct(rka->context);

- up_read(&current->request_key_auth->sem);
+ up_read(&current->act_as->request_key_auth->sem);
}
else {
/* it isn't - use this process as the context */
@@ -211,7 +211,7 @@ struct key *request_key_auth_new(struct key *target, const void *callout_info,
return authkey;

auth_key_revoked:
- up_read(&current->request_key_auth->sem);
+ up_read(&current->act_as->request_key_auth->sem);
kfree(rka->callout_info);
kfree(rka);
kleave("= -EKEYREVOKED");
diff --git a/security/selinux/exports.c b/security/selinux/exports.c
index 87d2bb3..5a0daa5 100644
--- a/security/selinux/exports.c
+++ b/security/selinux/exports.c
@@ -60,7 +60,7 @@ void selinux_get_ipc_sid(const struct kern_ipc_perm *ipcp, u32 *sid)
void selinux_get_task_sid(struct task_struct *tsk, u32 *sid)
{
if (selinux_enabled) {
- struct task_security_struct *tsec = tsk->security;
+ struct task_security_struct *tsec = tsk->sec->security;
*sid = tsec->sid;
return;
}
@@ -81,7 +81,7 @@ EXPORT_SYMBOL_GPL(selinux_string_to_sid);
int selinux_secmark_relabel_packet_permission(u32 sid)
{
if (selinux_enabled) {
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;

return avc_has_perm(tsec->sid, sid, SECCLASS_PACKET,
PACKET__RELABELTO, NULL);
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index face4b4..74cd7e2 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -163,21 +163,21 @@ static int task_alloc_security(struct task_struct *task)

tsec->task = task;
tsec->osid = tsec->sid = tsec->ptrace_sid = SECINITSID_UNLABELED;
- task->security = tsec;
+ task->sec->security = tsec;

return 0;
}

static void task_free_security(struct task_struct *task)
{
- struct task_security_struct *tsec = task->security;
- task->security = NULL;
+ struct task_security_struct *tsec = task->sec->security;
+ task->sec->security = NULL;
kfree(tsec);
}

static int inode_alloc_security(struct inode *inode)
{
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;
struct inode_security_struct *isec;

isec = kmem_cache_zalloc(sel_inode_cache, GFP_KERNEL);
@@ -211,7 +211,7 @@ static void inode_free_security(struct inode *inode)

static int file_alloc_security(struct file *file)
{
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;
struct file_security_struct *fsec;

fsec = kzalloc(sizeof(struct file_security_struct), GFP_KERNEL);
@@ -561,7 +561,7 @@ static int selinux_set_mnt_opts(struct super_block *sb, char **mount_options,
int *flags, int num_opts)
{
int rc = 0, i;
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;
struct superblock_security_struct *sbsec = sb->s_security;
const char *name = sb->s_type->name;
struct inode *inode = sbsec->sb->s_root->d_inode;
@@ -1266,8 +1266,8 @@ static int task_has_perm(struct task_struct *tsk1,
{
struct task_security_struct *tsec1, *tsec2;

- tsec1 = tsk1->security;
- tsec2 = tsk2->security;
+ tsec1 = tsk1->act_as->security;
+ tsec2 = tsk2->sec->security;
return avc_has_perm(tsec1->sid, tsec2->sid,
SECCLASS_PROCESS, perms, NULL);
}
@@ -1279,7 +1279,7 @@ static int task_has_capability(struct task_struct *tsk,
struct task_security_struct *tsec;
struct avc_audit_data ad;

- tsec = tsk->security;
+ tsec = tsk->sec->security;

AVC_AUDIT_DATA_INIT(&ad,CAP);
ad.tsk = tsk;
@@ -1295,7 +1295,7 @@ static int task_has_system(struct task_struct *tsk,
{
struct task_security_struct *tsec;

- tsec = tsk->security;
+ tsec = tsk->sec->security;

return avc_has_perm(tsec->sid, SECINITSID_KERNEL,
SECCLASS_SYSTEM, perms, NULL);
@@ -1316,7 +1316,7 @@ static int inode_has_perm(struct task_struct *tsk,
if (unlikely (IS_PRIVATE (inode)))
return 0;

- tsec = tsk->security;
+ tsec = tsk->sec->security;
isec = inode->i_security;

if (!adp) {
@@ -1356,7 +1356,7 @@ static int file_has_perm(struct task_struct *tsk,
struct file *file,
u32 av)
{
- struct task_security_struct *tsec = tsk->security;
+ struct task_security_struct *tsec = tsk->sec->security;
struct file_security_struct *fsec = file->f_security;
struct vfsmount *mnt = file->f_path.mnt;
struct dentry *dentry = file->f_path.dentry;
@@ -1396,7 +1396,7 @@ static int may_create(struct inode *dir,
struct avc_audit_data ad;
int rc;

- tsec = current->security;
+ tsec = current->act_as->security;
dsec = dir->i_security;
sbsec = dir->i_sb->s_security;

@@ -1433,7 +1433,7 @@ static int may_create_key(u32 ksid,
{
struct task_security_struct *tsec;

- tsec = ctx->security;
+ tsec = ctx->sec->security;

return avc_has_perm(tsec->sid, ksid, SECCLASS_KEY, KEY__CREATE, NULL);
}
@@ -1454,7 +1454,7 @@ static int may_link(struct inode *dir,
u32 av;
int rc;

- tsec = current->security;
+ tsec = current->act_as->security;
dsec = dir->i_security;
isec = dentry->d_inode->i_security;

@@ -1498,7 +1498,7 @@ static inline int may_rename(struct inode *old_dir,
int old_is_dir, new_is_dir;
int rc;

- tsec = current->security;
+ tsec = current->act_as->security;
old_dsec = old_dir->i_security;
old_isec = old_dentry->d_inode->i_security;
old_is_dir = S_ISDIR(old_dentry->d_inode->i_mode);
@@ -1551,7 +1551,7 @@ static int superblock_has_perm(struct task_struct *tsk,
struct task_security_struct *tsec;
struct superblock_security_struct *sbsec;

- tsec = tsk->security;
+ tsec = tsk->act_as->security;
sbsec = sb->s_security;
return avc_has_perm(tsec->sid, sbsec->sid, SECCLASS_FILESYSTEM,
perms, ad);
@@ -1606,8 +1606,8 @@ static inline u32 file_to_av(struct file *file)

static int selinux_ptrace(struct task_struct *parent, struct task_struct *child)
{
- struct task_security_struct *psec = parent->security;
- struct task_security_struct *csec = child->security;
+ struct task_security_struct *psec = parent->act_as->security;
+ struct task_security_struct *csec = child->sec->security;
int rc;

rc = secondary_ops->ptrace(parent,child);
@@ -1715,7 +1715,7 @@ static int selinux_sysctl(ctl_table *table, int op)
if (rc)
return rc;

- tsec = current->security;
+ tsec = current->act_as->security;

rc = selinux_sysctl_get_sid(table, (op == 0001) ?
SECCLASS_DIR : SECCLASS_FILE, &tsid);
@@ -1824,7 +1824,7 @@ static int selinux_syslog(int type)
static int selinux_vm_enough_memory(struct mm_struct *mm, long pages)
{
int rc, cap_sys_admin = 0;
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;

rc = secondary_ops->capable(current, CAP_SYS_ADMIN);
if (rc == 0)
@@ -1877,7 +1877,7 @@ static int selinux_bprm_set_security(struct linux_binprm *bprm)
if (bsec->set)
return 0;

- tsec = current->security;
+ tsec = current->sec->security;
isec = inode->i_security;

/* Default to the current task SID. */
@@ -1943,7 +1943,7 @@ static int selinux_bprm_check_security (struct linux_binprm *bprm)

static int selinux_bprm_secureexec (struct linux_binprm *bprm)
{
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->sec->security;
int atsecure = 0;

if (tsec->osid != tsec->sid) {
@@ -2066,7 +2066,7 @@ static void selinux_bprm_apply_creds(struct linux_binprm *bprm, int unsafe)

secondary_ops->bprm_apply_creds(bprm, unsafe);

- tsec = current->security;
+ tsec = current->sec->security;

bsec = bprm->security;
sid = bsec->sid;
@@ -2111,7 +2111,7 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm)
struct bprm_security_struct *bsec;
int rc, i;

- tsec = current->security;
+ tsec = current->sec->security;
bsec = bprm->security;

if (bsec->unsafe) {
@@ -2366,7 +2366,7 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
int rc;
char *namep = NULL, *context;

- tsec = current->security;
+ tsec = current->act_as->security;
dsec = dir->i_security;
sbsec = dir->i_sb->s_security;

@@ -2551,7 +2551,7 @@ static int selinux_inode_setotherxattr(struct dentry *dentry, char *name)

static int selinux_inode_setxattr(struct dentry *dentry, char *name, void *value, size_t size, int flags)
{
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;
struct inode *inode = dentry->d_inode;
struct inode_security_struct *isec = inode->i_security;
struct superblock_security_struct *sbsec;
@@ -2738,7 +2738,7 @@ static int selinux_revalidate_file_permission(struct file *file, int mask)
static int selinux_file_permission(struct file *file, int mask)
{
struct inode *inode = file->f_path.dentry->d_inode;
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;
struct file_security_struct *fsec = file->f_security;
struct inode_security_struct *isec = inode->i_security;

@@ -2846,7 +2846,8 @@ static int selinux_file_mmap(struct file *file, unsigned long reqprot,
unsigned long addr, unsigned long addr_only)
{
int rc = 0;
- u32 sid = ((struct task_security_struct*)(current->security))->sid;
+ u32 sid = ((struct task_security_struct *)
+ (current->act_as->security))->sid;

if (addr < mmap_min_addr)
rc = avc_has_perm(sid, sid, SECCLASS_MEMPROTECT,
@@ -2958,7 +2959,7 @@ static int selinux_file_set_fowner(struct file *file)
struct task_security_struct *tsec;
struct file_security_struct *fsec;

- tsec = current->security;
+ tsec = current->act_as->security;
fsec = file->f_security;
fsec->fown_sid = tsec->sid;

@@ -2976,7 +2977,7 @@ static int selinux_file_send_sigiotask(struct task_struct *tsk,
/* struct fown_struct is never outside the context of a struct file */
file = container_of(fown, struct file, f_owner);

- tsec = tsk->security;
+ tsec = tsk->sec->security;
fsec = file->f_security;

if (!signum)
@@ -3039,12 +3040,12 @@ static int selinux_task_alloc_security(struct task_struct *tsk)
struct task_security_struct *tsec1, *tsec2;
int rc;

- tsec1 = current->security;
+ tsec1 = current->act_as->security;

rc = task_alloc_security(tsk);
if (rc)
return rc;
- tsec2 = tsk->security;
+ tsec2 = tsk->sec->security;

tsec2->osid = tsec1->osid;
tsec2->sid = tsec1->sid;
@@ -3201,7 +3202,7 @@ static int selinux_task_kill(struct task_struct *p, struct siginfo *info,
perm = PROCESS__SIGNULL; /* null signal; existence test */
else
perm = signal_to_av(sig);
- tsec = p->security;
+ tsec = p->sec->security;
if (secid)
rc = avc_has_perm(secid, tsec->sid, SECCLASS_PROCESS, perm, NULL);
else
@@ -3232,7 +3233,7 @@ static void selinux_task_reparent_to_init(struct task_struct *p)

secondary_ops->task_reparent_to_init(p);

- tsec = p->security;
+ tsec = p->sec->security;
tsec->osid = tsec->sid;
tsec->sid = SECINITSID_KERNEL;
return;
@@ -3241,7 +3242,7 @@ static void selinux_task_reparent_to_init(struct task_struct *p)
static void selinux_task_to_inode(struct task_struct *p,
struct inode *inode)
{
- struct task_security_struct *tsec = p->security;
+ struct task_security_struct *tsec = p->sec->security;
struct inode_security_struct *isec = inode->i_security;

isec->sid = tsec->sid;
@@ -3483,7 +3484,7 @@ static int socket_has_perm(struct task_struct *task, struct socket *sock,
struct avc_audit_data ad;
int err = 0;

- tsec = task->security;
+ tsec = task->act_as->security;
isec = SOCK_INODE(sock)->i_security;

if (isec->sid == SECINITSID_KERNEL)
@@ -3507,7 +3508,7 @@ static int selinux_socket_create(int family, int type,
if (kern)
goto out;

- tsec = current->security;
+ tsec = current->act_as->security;
newsid = tsec->sockcreate_sid ? : tsec->sid;
err = avc_has_perm(tsec->sid, newsid,
socket_type_to_security_class(family, type,
@@ -3528,7 +3529,7 @@ static int selinux_socket_post_create(struct socket *sock, int family,

isec = SOCK_INODE(sock)->i_security;

- tsec = current->security;
+ tsec = current->act_as->security;
newsid = tsec->sockcreate_sid ? : tsec->sid;
isec->sclass = socket_type_to_security_class(family, type, protocol);
isec->sid = kern ? SECINITSID_KERNEL : newsid;
@@ -3574,7 +3575,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
struct sock *sk = sock->sk;
u32 sid, node_perm, addrlen;

- tsec = current->security;
+ tsec = current->act_as->security;
isec = SOCK_INODE(sock)->i_security;

if (family == PF_INET) {
@@ -4521,7 +4522,7 @@ static int ipc_alloc_security(struct task_struct *task,
struct kern_ipc_perm *perm,
u16 sclass)
{
- struct task_security_struct *tsec = task->security;
+ struct task_security_struct *tsec = task->act_as->security;
struct ipc_security_struct *isec;

isec = kzalloc(sizeof(struct ipc_security_struct), GFP_KERNEL);
@@ -4573,7 +4574,7 @@ static int ipc_has_perm(struct kern_ipc_perm *ipc_perms,
struct ipc_security_struct *isec;
struct avc_audit_data ad;

- tsec = current->security;
+ tsec = current->act_as->security;
isec = ipc_perms->security;

AVC_AUDIT_DATA_INIT(&ad, IPC);
@@ -4604,7 +4605,7 @@ static int selinux_msg_queue_alloc_security(struct msg_queue *msq)
if (rc)
return rc;

- tsec = current->security;
+ tsec = current->act_as->security;
isec = msq->q_perm.security;

AVC_AUDIT_DATA_INIT(&ad, IPC);
@@ -4630,7 +4631,7 @@ static int selinux_msg_queue_associate(struct msg_queue *msq, int msqflg)
struct ipc_security_struct *isec;
struct avc_audit_data ad;

- tsec = current->security;
+ tsec = current->act_as->security;
isec = msq->q_perm.security;

AVC_AUDIT_DATA_INIT(&ad, IPC);
@@ -4676,7 +4677,7 @@ static int selinux_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
struct avc_audit_data ad;
int rc;

- tsec = current->security;
+ tsec = current->act_as->security;
isec = msq->q_perm.security;
msec = msg->security;

@@ -4724,7 +4725,7 @@ static int selinux_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
struct avc_audit_data ad;
int rc;

- tsec = target->security;
+ tsec = target->act_as->security;
isec = msq->q_perm.security;
msec = msg->security;

@@ -4751,7 +4752,7 @@ static int selinux_shm_alloc_security(struct shmid_kernel *shp)
if (rc)
return rc;

- tsec = current->security;
+ tsec = current->act_as->security;
isec = shp->shm_perm.security;

AVC_AUDIT_DATA_INIT(&ad, IPC);
@@ -4777,7 +4778,7 @@ static int selinux_shm_associate(struct shmid_kernel *shp, int shmflg)
struct ipc_security_struct *isec;
struct avc_audit_data ad;

- tsec = current->security;
+ tsec = current->act_as->security;
isec = shp->shm_perm.security;

AVC_AUDIT_DATA_INIT(&ad, IPC);
@@ -4850,7 +4851,7 @@ static int selinux_sem_alloc_security(struct sem_array *sma)
if (rc)
return rc;

- tsec = current->security;
+ tsec = current->act_as->security;
isec = sma->sem_perm.security;

AVC_AUDIT_DATA_INIT(&ad, IPC);
@@ -4876,7 +4877,7 @@ static int selinux_sem_associate(struct sem_array *sma, int semflg)
struct ipc_security_struct *isec;
struct avc_audit_data ad;

- tsec = current->security;
+ tsec = current->act_as->security;
isec = sma->sem_perm.security;

AVC_AUDIT_DATA_INIT(&ad, IPC);
@@ -4995,7 +4996,7 @@ static int selinux_getprocattr(struct task_struct *p,
return error;
}

- tsec = p->security;
+ tsec = p->sec->security;

if (!strcmp(name, "current"))
sid = tsec->sid;
@@ -5072,7 +5073,7 @@ static int selinux_setprocattr(struct task_struct *p,
operation. See selinux_bprm_set_security for the execve
checks and may_create for the file creation checks. The
operation will then fail if the context is not permitted. */
- tsec = p->security;
+ tsec = p->sec->security;
if (!strcmp(name, "exec"))
tsec->exec_sid = sid;
else if (!strcmp(name, "fscreate"))
@@ -5155,7 +5156,7 @@ static void selinux_release_secctx(char *secdata, u32 seclen)
static int selinux_key_alloc(struct key *k, struct task_struct *tsk,
unsigned long flags)
{
- struct task_security_struct *tsec = tsk->security;
+ struct task_security_struct *tsec = tsk->sec->security;
struct key_security_struct *ksec;

ksec = kzalloc(sizeof(struct key_security_struct), GFP_KERNEL);
@@ -5190,7 +5191,7 @@ static int selinux_key_permission(key_ref_t key_ref,

key = key_ref_to_ptr(key_ref);

- tsec = ctx->security;
+ tsec = ctx->sec->security;
ksec = key->security;

/* if no specific permissions are requested, we skip the
@@ -5417,7 +5418,7 @@ static __init int selinux_init(void)
/* Set the security state for the initial task. */
if (task_alloc_security(current))
panic("SELinux: Failed to initialize initial task.\n");
- tsec = current->security;
+ tsec = current->sec->security;
tsec->osid = tsec->sid = SECINITSID_KERNEL;

sel_inode_cache = kmem_cache_create("selinux_inode_security",
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 0341567..c245a14 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -93,7 +93,7 @@ static int task_has_security(struct task_struct *tsk,
{
struct task_security_struct *tsec;

- tsec = tsk->security;
+ tsec = tsk->act_as->security;
if (!tsec)
return -EACCES;

diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index 7e15820..562f790 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -201,7 +201,7 @@ static int selinux_xfrm_sec_ctx_alloc(struct xfrm_sec_ctx **ctxp,
struct xfrm_user_sec_ctx *uctx, u32 sid)
{
int rc = 0;
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;
struct xfrm_sec_ctx *ctx = NULL;
char *ctx_str = NULL;
u32 str_len;
@@ -342,7 +342,7 @@ void selinux_xfrm_policy_free(struct xfrm_policy *xp)
*/
int selinux_xfrm_policy_delete(struct xfrm_policy *xp)
{
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;
struct xfrm_sec_ctx *ctx = xp->security;
int rc = 0;

@@ -389,7 +389,7 @@ void selinux_xfrm_state_free(struct xfrm_state *x)
*/
int selinux_xfrm_state_delete(struct xfrm_state *x)
{
- struct task_security_struct *tsec = current->security;
+ struct task_security_struct *tsec = current->act_as->security;
struct xfrm_sec_ctx *ctx = x->security;
int rc = 0;