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Simplify exec_permission_lite() further

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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>
This commit is contained in:
Linus Torvalds 2009-08-28 10:53:56 -07:00
parent b7a437b08a
commit f1ac9f6bfe
1 changed files with 1 additions and 7 deletions
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8
fs/namei.c
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@ -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;