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authorEric Paris <eparis@redhat.com>2011-04-25 13:10:27 -0400
committerEric Paris <eparis@redhat.com>2011-04-25 18:14:07 -0400
commita269434d2fb48a4d66c1d7bf821b7874b59c5b41 (patch)
tree9c84b5f3e9f3adb3dd4a7e9da2b72dd7fe7eec49 /security/smack
parentf48b7399840b453e7282b523f535561fe9638a2d (diff)
downloadvexpress-lsk-a269434d2fb48a4d66c1d7bf821b7874b59c5b41.tar.gz
LSM: separate LSM_AUDIT_DATA_DENTRY from LSM_AUDIT_DATA_PATH
This patch separates and audit message that only contains a dentry from one that contains a full path. This allows us to make it harder to misuse the interfaces or for the interfaces to be implemented wrong. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Diffstat (limited to 'security/smack')
-rw-r--r--security/smack/smack.h7
-rw-r--r--security/smack/smack_lsm.c34
2 files changed, 21 insertions, 20 deletions
diff --git a/security/smack/smack.h b/security/smack/smack.h
index a16925c0e91..2b6c6a51612 100644
--- a/security/smack/smack.h
+++ b/security/smack/smack.h
@@ -316,12 +316,7 @@ static inline void smk_ad_setfield_u_tsk(struct smk_audit_info *a,
static inline void smk_ad_setfield_u_fs_path_dentry(struct smk_audit_info *a,
struct dentry *d)
{
- a->a.u.path.dentry = d;
-}
-static inline void smk_ad_setfield_u_fs_path_mnt(struct smk_audit_info *a,
- struct vfsmount *m)
-{
- a->a.u.path.mnt = m;
+ a->a.u.dentry = d;
}
static inline void smk_ad_setfield_u_fs_inode(struct smk_audit_info *a,
struct inode *i)
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index eeb393fbf92..a3bdd138392 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -383,7 +383,7 @@ static int smack_sb_statfs(struct dentry *dentry)
int rc;
struct smk_audit_info ad;
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
rc = smk_curacc(sbp->smk_floor, MAY_READ, &ad);
@@ -425,10 +425,13 @@ static int smack_sb_umount(struct vfsmount *mnt, int flags)
{
struct superblock_smack *sbp;
struct smk_audit_info ad;
+ struct path path;
+
+ path.dentry = mnt->mnt_root;
+ path.mnt = mnt;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
- smk_ad_setfield_u_fs_path_dentry(&ad, mnt->mnt_root);
- smk_ad_setfield_u_fs_path_mnt(&ad, mnt);
+ smk_ad_setfield_u_fs_path(&ad, path);
sbp = mnt->mnt_sb->s_security;
return smk_curacc(sbp->smk_floor, MAY_WRITE, &ad);
@@ -563,7 +566,7 @@ static int smack_inode_link(struct dentry *old_dentry, struct inode *dir,
struct smk_audit_info ad;
int rc;
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, old_dentry);
isp = smk_of_inode(old_dentry->d_inode);
@@ -592,7 +595,7 @@ static int smack_inode_unlink(struct inode *dir, struct dentry *dentry)
struct smk_audit_info ad;
int rc;
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
/*
@@ -623,7 +626,7 @@ static int smack_inode_rmdir(struct inode *dir, struct dentry *dentry)
struct smk_audit_info ad;
int rc;
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
/*
@@ -663,7 +666,7 @@ static int smack_inode_rename(struct inode *old_inode,
char *isp;
struct smk_audit_info ad;
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, old_dentry);
isp = smk_of_inode(old_dentry->d_inode);
@@ -720,7 +723,7 @@ static int smack_inode_setattr(struct dentry *dentry, struct iattr *iattr)
*/
if (iattr->ia_valid & ATTR_FORCE)
return 0;
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
return smk_curacc(smk_of_inode(dentry->d_inode), MAY_WRITE, &ad);
@@ -736,10 +739,13 @@ static int smack_inode_setattr(struct dentry *dentry, struct iattr *iattr)
static int smack_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
{
struct smk_audit_info ad;
+ struct path path;
+
+ path.dentry = dentry;
+ path.mnt = mnt;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
- smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
- smk_ad_setfield_u_fs_path_mnt(&ad, mnt);
+ smk_ad_setfield_u_fs_path(&ad, path);
return smk_curacc(smk_of_inode(dentry->d_inode), MAY_READ, &ad);
}
@@ -784,7 +790,7 @@ static int smack_inode_setxattr(struct dentry *dentry, const char *name,
} else
rc = cap_inode_setxattr(dentry, name, value, size, flags);
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
if (rc == 0)
@@ -845,7 +851,7 @@ static int smack_inode_getxattr(struct dentry *dentry, const char *name)
{
struct smk_audit_info ad;
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
return smk_curacc(smk_of_inode(dentry->d_inode), MAY_READ, &ad);
@@ -877,7 +883,7 @@ static int smack_inode_removexattr(struct dentry *dentry, const char *name)
} else
rc = cap_inode_removexattr(dentry, name);
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
if (rc == 0)
rc = smk_curacc(smk_of_inode(dentry->d_inode), MAY_WRITE, &ad);
@@ -1070,7 +1076,7 @@ static int smack_file_lock(struct file *file, unsigned int cmd)
{
struct smk_audit_info ad;
- smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
+ smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, file->f_path.dentry);
return smk_curacc(file->f_security, MAY_WRITE, &ad);
}