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authorLinus Torvalds <torvalds@linux-foundation.org>2009-08-28 10:53:56 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-08 11:07:43 -0700
commitf1ac9f6bfea6f21e8ab6dbbe46879d62a6fba8c0 (patch)
tree01b4e3c84e1403f6c900dd4412aa09cd335c030c
parentb7a437b08a44a3ed7e3a052eb39d2c5f618b603b (diff)
Simplify exec_permission_lite() further
This function is only called for path components that are already known to be directories (they have a '->lookup' method). So don't bother doing that whole S_ISDIR() testing, the whole point of the 'lite()' version is that we know that we are looking at a directory component, and that we're only checking name lookup permission. Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/namei.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 8c3580610ee..929f535fb22 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -445,13 +445,7 @@ static int exec_permission_lite(struct inode *inode)
if (mode & MAY_EXEC)
goto ok;
- if ((inode->i_mode & S_IXUGO) && capable(CAP_DAC_OVERRIDE))
- goto ok;
-
- if (S_ISDIR(inode->i_mode) && capable(CAP_DAC_OVERRIDE))
- goto ok;
-
- if (S_ISDIR(inode->i_mode) && capable(CAP_DAC_READ_SEARCH))
+ if (capable(CAP_DAC_OVERRIDE) || capable(CAP_DAC_READ_SEARCH))
goto ok;
return -EACCES;