diff options
| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2009-06-26 22:05:27 +0400 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-06-29 02:59:10 +0400 |
| commit | 94e5d714f604d4cb4cb13163f01ede278e69258b (patch) | |
| tree | 1f7f50f5eddf74e6930eaf0384538549f263b8fe /security/integrity/ima | |
| parent | 79b854c549c62c54fa27f87e04465c01db889f8d (diff) | |
| download | linux-94e5d714f604d4cb4cb13163f01ede278e69258b.tar.xz | |
integrity: add ima_counts_put (updated)
This patch fixes an imbalance message as reported by J.R. Okajima.
The IMA file counters are incremented in ima_path_check. If the
actual open fails, such as ETXTBSY, decrement the counters to
prevent unnecessary imbalance messages.
Reported-by: J.R. Okajima <hooanon05@yahoo.co.jp>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/integrity/ima')
| -rw-r--r-- | security/integrity/ima/ima_main.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index 6f611874d10e..101c512564ec 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -238,7 +238,34 @@ out: } /* - * ima_opens_get - increment file counts + * ima_counts_put - decrement file counts + * + * File counts are incremented in ima_path_check. On file open + * error, such as ETXTBSY, decrement the counts to prevent + * unnecessary imbalance messages. + */ +void ima_counts_put(struct path *path, int mask) +{ + struct inode *inode = path->dentry->d_inode; + struct ima_iint_cache *iint; + + if (!ima_initialized || !S_ISREG(inode->i_mode)) + return; + iint = ima_iint_find_insert_get(inode); + if (!iint) + return; + + mutex_lock(&iint->mutex); + iint->opencount--; + if ((mask & MAY_WRITE) || (mask == 0)) + iint->writecount--; + else if (mask & (MAY_READ | MAY_EXEC)) + iint->readcount--; + mutex_unlock(&iint->mutex); +} + +/* + * ima_counts_get - increment file counts * * - for IPC shm and shmat file. * - for nfsd exported files. |