summaryrefslogtreecommitdiff
path: root/security/smack/smack_lsm.c
diff options
context:
space:
mode:
Diffstat (limited to 'security/smack/smack_lsm.c')
-rw-r--r--security/smack/smack_lsm.c40
1 files changed, 19 insertions, 21 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 654345de62e7..1fa72317bbec 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -160,7 +160,7 @@ static int smk_bu_file(struct file *file, int mode, int rc)
{
struct task_smack *tsp = current_security();
struct smack_known *sskp = tsp->smk_task;
- struct inode *inode = file->f_inode;
+ struct inode *inode = file_inode(file);
char acc[SMK_NUM_ACCESS_TYPE + 1];
if (rc <= 0)
@@ -168,7 +168,7 @@ static int smk_bu_file(struct file *file, int mode, int rc)
smk_bu_mode(mode, acc);
pr_info("Smack Bringup: (%s %s %s) file=(%s %ld %pD) %s\n",
- sskp->smk_known, (char *)file->f_security, acc,
+ sskp->smk_known, smk_of_inode(inode)->smk_known, acc,
inode->i_sb->s_id, inode->i_ino, file,
current->comm);
return 0;
@@ -1347,6 +1347,9 @@ static int smack_file_permission(struct file *file, int mask)
* The security blob for a file is a pointer to the master
* label list, so no allocation is done.
*
+ * f_security is the owner security information. It
+ * isn't used on file access checks, it's for send_sigio.
+ *
* Returns 0
*/
static int smack_file_alloc_security(struct file *file)
@@ -1384,17 +1387,18 @@ static int smack_file_ioctl(struct file *file, unsigned int cmd,
{
int rc = 0;
struct smk_audit_info ad;
+ struct inode *inode = file_inode(file);
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
if (_IOC_DIR(cmd) & _IOC_WRITE) {
- rc = smk_curacc(file->f_security, MAY_WRITE, &ad);
+ rc = smk_curacc(smk_of_inode(inode), MAY_WRITE, &ad);
rc = smk_bu_file(file, MAY_WRITE, rc);
}
if (rc == 0 && (_IOC_DIR(cmd) & _IOC_READ)) {
- rc = smk_curacc(file->f_security, MAY_READ, &ad);
+ rc = smk_curacc(smk_of_inode(inode), MAY_READ, &ad);
rc = smk_bu_file(file, MAY_READ, rc);
}
@@ -1412,10 +1416,11 @@ static int smack_file_lock(struct file *file, unsigned int cmd)
{
struct smk_audit_info ad;
int rc;
+ struct inode *inode = file_inode(file);
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
- rc = smk_curacc(file->f_security, MAY_LOCK, &ad);
+ rc = smk_curacc(smk_of_inode(inode), MAY_LOCK, &ad);
rc = smk_bu_file(file, MAY_LOCK, rc);
return rc;
}
@@ -1437,7 +1442,7 @@ static int smack_file_fcntl(struct file *file, unsigned int cmd,
{
struct smk_audit_info ad;
int rc = 0;
-
+ struct inode *inode = file_inode(file);
switch (cmd) {
case F_GETLK:
@@ -1446,14 +1451,14 @@ static int smack_file_fcntl(struct file *file, unsigned int cmd,
case F_SETLKW:
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
- rc = smk_curacc(file->f_security, MAY_LOCK, &ad);
+ rc = smk_curacc(smk_of_inode(inode), MAY_LOCK, &ad);
rc = smk_bu_file(file, MAY_LOCK, rc);
break;
case F_SETOWN:
case F_SETSIG:
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
- rc = smk_curacc(file->f_security, MAY_WRITE, &ad);
+ rc = smk_curacc(smk_of_inode(inode), MAY_WRITE, &ad);
rc = smk_bu_file(file, MAY_WRITE, rc);
break;
default:
@@ -1571,14 +1576,10 @@ static int smack_mmap_file(struct file *file,
* smack_file_set_fowner - set the file security blob value
* @file: object in question
*
- * Returns 0
- * Further research may be required on this one.
*/
static void smack_file_set_fowner(struct file *file)
{
- struct smack_known *skp = smk_of_current();
-
- file->f_security = skp;
+ file->f_security = smk_of_current();
}
/**
@@ -1630,6 +1631,7 @@ static int smack_file_receive(struct file *file)
int rc;
int may = 0;
struct smk_audit_info ad;
+ struct inode *inode = file_inode(file);
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
@@ -1641,7 +1643,7 @@ static int smack_file_receive(struct file *file)
if (file->f_mode & FMODE_WRITE)
may |= MAY_WRITE;
- rc = smk_curacc(file->f_security, may, &ad);
+ rc = smk_curacc(smk_of_inode(inode), may, &ad);
rc = smk_bu_file(file, may, rc);
return rc;
}
@@ -1661,21 +1663,17 @@ static int smack_file_receive(struct file *file)
static int smack_file_open(struct file *file, const struct cred *cred)
{
struct task_smack *tsp = cred->security;
- struct inode_smack *isp = file_inode(file)->i_security;
+ struct inode *inode = file_inode(file);
struct smk_audit_info ad;
int rc;
- if (smack_privileged(CAP_MAC_OVERRIDE)) {
- file->f_security = isp->smk_inode;
+ if (smack_privileged(CAP_MAC_OVERRIDE))
return 0;
- }
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
- rc = smk_access(tsp->smk_task, isp->smk_inode, MAY_READ, &ad);
+ rc = smk_access(tsp->smk_task, smk_of_inode(inode), MAY_READ, &ad);
rc = smk_bu_credfile(cred, file, MAY_READ, rc);
- if (rc == 0)
- file->f_security = isp->smk_inode;
return rc;
}