diff options
| author | Dmitry Kasatkin <dmitry.kasatkin@intel.com> | 2012-09-20 22:38:53 +0300 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2013-01-16 15:47:07 -0500 |
| commit | def3e8b9ee23cb69036910e48ec4e3eff40e04cb (patch) | |
| tree | 0840ab9e618f15f4c3c5e8ee6fafe5a17c814af2 /security | |
| parent | e90805656d4683f84d360276102ae63adc777a38 (diff) | |
| download | talos-op-linux-def3e8b9ee23cb69036910e48ec4e3eff40e04cb.tar.gz talos-op-linux-def3e8b9ee23cb69036910e48ec4e3eff40e04cb.zip | |
ima: set appraise status in fix mode only when xattr is fixed
When a file system is mounted read-only, setting the xattr value in
fix mode fails with an error code -EROFS. The xattr should be fixed
after the file system is remounted read-write. This patch verifies
that the set xattr succeeds, before setting the appraise status value
to INTEGRITY_PASS.
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/integrity/ima/ima_appraise.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c index bdc8ba1d1d27..b240c58403e2 100644 --- a/security/integrity/ima/ima_appraise.c +++ b/security/integrity/ima/ima_appraise.c @@ -42,12 +42,13 @@ int ima_must_appraise(struct inode *inode, int mask, enum ima_hooks func) return ima_match_policy(inode, func, mask, IMA_APPRAISE); } -static void ima_fix_xattr(struct dentry *dentry, +static int ima_fix_xattr(struct dentry *dentry, struct integrity_iint_cache *iint) { iint->ima_xattr.type = IMA_XATTR_DIGEST; - __vfs_setxattr_noperm(dentry, XATTR_NAME_IMA, (u8 *)&iint->ima_xattr, - sizeof iint->ima_xattr, 0); + return __vfs_setxattr_noperm(dentry, XATTR_NAME_IMA, + (u8 *)&iint->ima_xattr, + sizeof(iint->ima_xattr), 0); } /* @@ -141,8 +142,8 @@ out: if ((ima_appraise & IMA_APPRAISE_FIX) && (!xattr_value || xattr_value->type != EVM_IMA_XATTR_DIGSIG)) { - ima_fix_xattr(dentry, iint); - status = INTEGRITY_PASS; + if (!ima_fix_xattr(dentry, iint)) + status = INTEGRITY_PASS; } integrity_audit_msg(AUDIT_INTEGRITY_DATA, inode, filename, op, cause, rc, 0); |
