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authorDavid Howells <dhowells@redhat.com>2008-11-14 10:38:51 +1100
committerJames Morris <jmorris@namei.org>2008-11-14 10:38:51 +1100
commit4c9c544e4987efe6643ad5692af47a0abfd4e0d1 (patch)
tree3414afce05e2757f4a21e483d15833c5679df7a2
parent6a2f90e9fae0824e8b6b123f1ea7d9fff9079ef3 (diff)
CRED: Wrap task credential accesses in the Ext4 filesystem
Wrap access to task credentials so that they can be separated more easily from the task_struct during the introduction of COW creds. Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id(). Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more sense to use RCU directly rather than a convenient wrapper; these will be addressed by later patches. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: adilger@sun.com Cc: linux-ext4@vger.kernel.org Signed-off-by: James Morris <jmorris@namei.org>
-rw-r--r--fs/ext4/balloc.c2
-rw-r--r--fs/ext4/ialloc.c4
2 files changed, 3 insertions, 3 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index d2003cdc36a..a932b9a2924 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -624,7 +624,7 @@ int ext4_has_free_blocks(struct ext4_sb_info *sbi, s64 nblocks)
return 1;
/* Hm, nope. Are (enough) root reserved blocks available? */
- if (sbi->s_resuid == current->fsuid ||
+ if (sbi->s_resuid == current_fsuid() ||
((sbi->s_resgid != 0) && in_group_p(sbi->s_resgid)) ||
capable(CAP_SYS_RESOURCE)) {
if (free_blocks >= (nblocks + dirty_blocks))
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index fe34d74cfb1..c8ea50ed023 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -785,7 +785,7 @@ got:
spin_unlock(sb_bgl_lock(sbi, flex_group));
}
- inode->i_uid = current->fsuid;
+ inode->i_uid = current_fsuid();
if (test_opt(sb, GRPID))
inode->i_gid = dir->i_gid;
else if (dir->i_mode & S_ISGID) {
@@ -793,7 +793,7 @@ got:
if (S_ISDIR(mode))
mode |= S_ISGID;
} else
- inode->i_gid = current->fsgid;
+ inode->i_gid = current_fsgid();
inode->i_mode = mode;
inode->i_ino = ino + group * EXT4_INODES_PER_GROUP(sb);