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fix ima breakage

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The "Untangling ima mess, part 2 with counters" patch messed
up the counters.  Based on conversations with Al Viro, this patch
streamlines ima_path_check() by removing the counter maintaince.
The counters are now updated independently, from measuring the file,
in __dentry_open() and alloc_file() by calling ima_counts_get().
ima_path_check() is called from nfsd and do_filp_open().
It also did not measure all files that should have been measured.
Reason: ima_path_check() got bogus value passed as mask.
[AV: mea culpa]
[AV: add missing nfsd bits]

Signed-off-by: Mimi Zohar <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Mimi Zohar 2010-01-20 15:35:41 -05:00 • committed by Al Viro
commit 8eb988c70e
4 changed files with 97 additions and 152 deletions
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6
fs/namei.c
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@ -1736,8 +1736,7 @@ do_last:
if (nd.root.mnt)
path_put(&nd.root);
if (!IS_ERR(filp)) {
error = ima_path_check(&filp->f_path, filp->f_mode &
(MAY_READ | MAY_WRITE | MAY_EXEC));
error = ima_path_check(filp, acc_mode);
if (error) {
fput(filp);
filp = ERR_PTR(error);
@ -1797,8 +1796,7 @@ ok:
}
filp = nameidata_to_filp(&nd);
if (!IS_ERR(filp)) {
error = ima_path_check(&filp->f_path, filp->f_mode &
(MAY_READ | MAY_WRITE | MAY_EXEC));
error = ima_path_check(filp, acc_mode);
if (error) {
fput(filp);
filp = ERR_PTR(error);