Merge branch 'next' into for-linus

99 files changed, 653 insertions, 502 deletions

diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index 2a983d49d19..14d94420457 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -120,7 +120,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
 	switch (access) {
 	case V9FS_ACCESS_SINGLE:
 	case V9FS_ACCESS_USER:
-		uid = current->fsuid;
+		uid = current_fsuid();
 		any = 0;
 		break;
 
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 2dfcf5487ef..81f8bbf12f9 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -215,8 +215,8 @@ struct inode *v9fs_get_inode(struct super_block *sb, int mode)
 	inode = new_inode(sb);
 	if (inode) {
 		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
+		inode->i_uid = current_fsuid();
+		inode->i_gid = current_fsgid();
 		inode->i_blocks = 0;
 		inode->i_rdev = 0;
 		inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index d6cb1a0ca72..93212e40221 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -113,8 +113,8 @@ static int v9fs_get_sb(struct file_system_type *fs_type, int flags,
 	struct v9fs_session_info *v9ses = NULL;
 	struct p9_wstat *st = NULL;
 	int mode = S_IRWXUGO | S_ISVTX;
-	uid_t uid = current->fsuid;
-	gid_t gid = current->fsgid;
+	uid_t uid = current_fsuid();
+	gid_t gid = current_fsgid();
 	struct p9_fid *fid;
 	int retval = 0;
 
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index a13b334a391..415d9c67ac1 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -293,8 +293,8 @@ affs_new_inode(struct inode *dir)
 	mark_buffer_dirty_inode(bh, inode);
 	affs_brelse(bh);
 
-	inode->i_uid     = current->fsuid;
-	inode->i_gid     = current->fsgid;
+	inode->i_uid     = current_fsuid();
+	inode->i_gid     = current_fsgid();
 	inode->i_ino     = block;
 	inode->i_nlink   = 1;
 	inode->i_mtime   = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 8989c93193e..a19d64b582a 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -163,8 +163,8 @@ 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_uid();
+	*gid        = current_gid();
 	*reserved   = 2;
 	*root       = -1;
 	*blocksize  = -1;
diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 3662dd44896..c16d9be1b01 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -154,8 +154,8 @@ static struct inode *anon_inode_mkinode(void)
 	 */
 	inode->i_state = I_DIRTY;
 	inode->i_mode = S_IRUSR | S_IWUSR;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
 	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 	return inode;
 }
diff --git a/fs/attr.c b/fs/attr.c
index 7a83819f6ba..f4360192a93 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -29,13 +29,13 @@ int inode_change_ok(struct inode *inode, struct iattr *attr)
 
 	/* Make sure a caller can chown. */
 	if ((ia_valid & ATTR_UID) &&
-	    (current->fsuid != inode->i_uid ||
+	    (current_fsuid() != inode->i_uid ||
 	     attr->ia_uid != inode->i_uid) && !capable(CAP_CHOWN))
 		goto error;
 
 	/* Make sure caller can chgrp. */
 	if ((ia_valid & ATTR_GID) &&
-	    (current->fsuid != inode->i_uid ||
+	    (current_fsuid() != inode->i_uid ||
 	    (!in_group_p(attr->ia_gid) && attr->ia_gid != inode->i_gid)) &&
 	    !capable(CAP_CHOWN))
 		goto error;
diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index b70eea1e8c5..c773680d5c6 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -76,8 +76,8 @@ 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_uid();
+	*gid = current_gid();
 	*pgrp = task_pgrp_nr(current);
 
 	*minproto = *maxproto = AUTOFS_PROTO_VERSION;
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 33bf8cbfd05..63b7c7afe8d 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -308,7 +308,8 @@ static int autofs_dev_ioctl_open_mountpoint(const char *path, dev_t devid)
 			goto out;
 		}
 
-		filp = dentry_open(nd.path.dentry, nd.path.mnt, O_RDONLY);
+		filp = dentry_open(nd.path.dentry, nd.path.mnt, O_RDONLY,
+				   current_cred());
 		if (IS_ERR(filp)) {
 			err = PTR_ERR(filp);
 			goto out;
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index c7e65bb30ba..7b19802cfef 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -235,8 +235,8 @@ 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_uid();
+	*gid = current_gid();
 	*pgrp = task_pgrp_nr(current);
 
 	*minproto = AUTOFS_MIN_PROTO_VERSION;
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 4b67c2a2d77..e02cc8ae5eb 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -391,8 +391,8 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
 		memcpy(&wq->name, &qstr, sizeof(struct qstr));
 		wq->dev = autofs4_get_dev(sbi);
 		wq->ino = autofs4_get_ino(sbi);
-		wq->uid = current->uid;
-		wq->gid = current->gid;
+		wq->uid = current_uid();
+		wq->gid = current_gid();
 		wq->pid = current->pid;
 		wq->tgid = current->tgid;
 		wq->status = -EINTR; /* Status return if interrupted */
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index daae463068e..4dd1b623f93 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -106,8 +106,8 @@ static int bfs_create(struct inode *dir, struct dentry *dentry, int mode,
 	}
 	set_bit(ino, info->si_imap);
 	info->si_freei--;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current_fsgid();
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 	inode->i_blocks = 0;
 	inode->i_op = &bfs_file_inops;
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index 204cfd1d767..f1f3f4192a6 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -320,7 +320,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
 	current->mm->free_area_cache = current->mm->mmap_base;
 	current->mm->cached_hole_size = 0;
 
-	compute_creds(bprm);
+	install_exec_creds(bprm);
  	current->flags &= ~PF_FORKNOEXEC;
 #ifdef __sparc__
 	if (N_MAGIC(ex) == NMAGIC) {
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 8fcfa398d35..f458c1217c5 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -157,7 +157,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
 	int items;
 	elf_addr_t *elf_info;
 	int ei_index = 0;
-	struct task_struct *tsk = current;
+	const struct cred *cred = current_cred();
 	struct vm_area_struct *vma;
 
 	/*
@@ -223,10 +223,10 @@ 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, cred->uid);
+	NEW_AUX_ENT(AT_EUID, cred->euid);
+	NEW_AUX_ENT(AT_GID, cred->gid);
+	NEW_AUX_ENT(AT_EGID, cred->egid);
  	NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm));
 	NEW_AUX_ENT(AT_EXECFN, bprm->exec);
 	if (k_platform) {
@@ -956,7 +956,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
 	}
 #endif /* ARCH_HAS_SETUP_ADDITIONAL_PAGES */
 
-	compute_creds(bprm);
+	install_exec_creds(bprm);
 	current->flags &= ~PF_FORKNOEXEC;
 	retval = create_elf_tables(bprm, &loc->elf_ex,
 			  load_addr, interp_load_addr);
@@ -1361,6 +1361,7 @@ static void fill_prstatus(struct elf_prstatus *prstatus,
 static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
 		       struct mm_struct *mm)
 {
+	const struct cred *cred;
 	unsigned int i, len;
 	
 	/* first copy the parameters from user space */
@@ -1388,8 +1389,11 @@ 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);
+	rcu_read_lock();
+	cred = __task_cred(p);
+	SET_UID(psinfo->pr_uid, cred->uid);
+	SET_GID(psinfo->pr_gid, cred->gid);
+	rcu_read_unlock();
 	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 5b5424cb339..aa5b43205e3 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -404,7 +404,7 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
 	current->mm->start_stack = current->mm->start_brk + stack_size;
 #endif
 
-	compute_creds(bprm);
+	install_exec_creds(bprm);
 	current->flags &= ~PF_FORKNOEXEC;
 	if (create_elf_fdpic_tables(bprm, current->mm,
 				    &exec_params, &interp_params) < 0)
@@ -475,6 +475,7 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm,
 				   struct elf_fdpic_params *exec_params,
 				   struct elf_fdpic_params *interp_params)
 {
+	const struct cred *cred = current_cred();
 	unsigned long sp, csp, nitems;
 	elf_caddr_t __user *argv, *envp;
 	size_t platform_len = 0, len;
@@ -623,10 +624,10 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm,
 	NEW_AUX_ENT(AT_BASE,	interp_params->elfhdr_addr);
 	NEW_AUX_ENT(AT_FLAGS,	0);
 	NEW_AUX_ENT(AT_ENTRY,	exec_params->entry_addr);
-	NEW_AUX_ENT(AT_UID,	(elf_addr_t) current->uid);
-	NEW_AUX_ENT(AT_EUID,	(elf_addr_t) current->euid);
-	NEW_AUX_ENT(AT_GID,	(elf_addr_t) current->gid);
-	NEW_AUX_ENT(AT_EGID,	(elf_addr_t) current->egid);
+	NEW_AUX_ENT(AT_UID,	(elf_addr_t) cred->uid);
+	NEW_AUX_ENT(AT_EUID,	(elf_addr_t) cred->euid);
+	NEW_AUX_ENT(AT_GID,	(elf_addr_t) cred->gid);
+	NEW_AUX_ENT(AT_EGID,	(elf_addr_t) cred->egid);
 	NEW_AUX_ENT(AT_SECURE,	security_bprm_secureexec(bprm));
 	NEW_AUX_ENT(AT_EXECFN,	bprm->exec);
 
@@ -1413,6 +1414,7 @@ static void fill_prstatus(struct elf_prstatus *prstatus,
 static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
 		       struct mm_struct *mm)
 {