aboutsummaryrefslogtreecommitdiffstats
path: root/security/smack/smackfs.c
diff options
context:
space:
mode:
Diffstat (limited to 'security/smack/smackfs.c')
-rw-r--r--security/smack/smackfs.c53
1 files changed, 27 insertions, 26 deletions
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index 53a08b85bda4..ab167037b2dd 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -66,7 +66,7 @@ static DEFINE_MUTEX(smk_netlbladdr_lock);
* If it isn't somehow marked, use this.
* It can be reset via smackfs/ambient
*/
-char *smack_net_ambient;
+struct smack_known *smack_net_ambient;
/*
* This is the level in a CIPSO header that indicates a
@@ -112,7 +112,7 @@ struct smack_master_list {
LIST_HEAD(smack_rule_list);
struct smack_parsed_rule {
- char *smk_subject;
+ struct smack_known *smk_subject;
char *smk_object;
int smk_access1;
int smk_access2;
@@ -163,9 +163,11 @@ static inline void smack_catset_bit(unsigned int cat, char *catsetp)
*/
static void smk_netlabel_audit_set(struct netlbl_audit *nap)
{
+ struct smack_known *skp = smk_of_current();
+
nap->loginuid = audit_get_loginuid(current);
nap->sessionid = audit_get_sessionid(current);
- nap->secid = smack_to_secid(smk_of_current());
+ nap->secid = skp->smk_secid;
}
/*
@@ -306,7 +308,7 @@ static int smk_fill_rule(const char *subject, const char *object,
struct smack_known *skp;
if (import) {
- rule->smk_subject = smk_import(subject, len);
+ rule->smk_subject = smk_import_entry(subject, len);
if (rule->smk_subject == NULL)
return -1;
@@ -321,7 +323,7 @@ static int smk_fill_rule(const char *subject, const char *object,
kfree(cp);
if (skp == NULL)
return -1;
- rule->smk_subject = skp->smk_known;
+ rule->smk_subject = skp;
cp = smk_parse_smack(object, len);
if (cp == NULL)
@@ -445,7 +447,6 @@ static ssize_t smk_write_rules_list(struct file *file, const char __user *buf,
struct list_head *rule_list,
struct mutex *rule_lock, int format)
{
- struct smack_known *skp;
struct smack_parsed_rule *rule;
char *data;
int datalen;
@@ -505,12 +506,10 @@ static ssize_t smk_write_rules_list(struct file *file, const char __user *buf,
goto out_free_rule;
}
-
if (rule_list == NULL) {
load = 1;
- skp = smk_find_entry(rule->smk_subject);
- rule_list = &skp->smk_rules;
- rule_lock = &skp->smk_rules_lock;
+ rule_list = &rule->smk_subject->smk_rules;
+ rule_lock = &rule->smk_subject->smk_rules_lock;
}
rc = smk_set_access(rule, rule_list, rule_lock, load);
@@ -579,13 +578,14 @@ static void smk_rule_show(struct seq_file *s, struct smack_rule *srp, int max)
* because you should expect to be able to write
* anything you read back.
*/
- if (strlen(srp->smk_subject) >= max || strlen(srp->smk_object) >= max)
+ if (strlen(srp->smk_subject->smk_known) >= max ||
+ strlen(srp->smk_object) >= max)
return;
if (srp->smk_access == 0)
return;
- seq_printf(s, "%s %s", srp->smk_subject, srp->smk_object);
+ seq_printf(s, "%s %s", srp->smk_subject->smk_known, srp->smk_object);
seq_putc(s, ' ');
@@ -738,9 +738,9 @@ static void smk_unlbl_ambient(char *oldambient)
__func__, __LINE__, rc);
}
if (smack_net_ambient == NULL)
- smack_net_ambient = smack_known_floor.smk_known;
+ smack_net_ambient = &smack_known_floor;
- rc = netlbl_cfg_unlbl_map_add(smack_net_ambient, PF_INET,
+ rc = netlbl_cfg_unlbl_map_add(smack_net_ambient->smk_known, PF_INET,
NULL, NULL, &nai);
if (rc != 0)
printk(KERN_WARNING "%s:%d add rc = %d\n",
@@ -881,7 +881,7 @@ static ssize_t smk_set_cipso(struct file *file, const char __user *buf,
if (format == SMK_FIXED24_FMT)
rule += SMK_LABELLEN;
else
- rule += strlen(skp->smk_known);
+ rule += strlen(skp->smk_known) + 1;
ret = sscanf(rule, "%d", &maplevel);
if (ret != 1 || maplevel > SMACK_CIPSO_MAXLEVEL)
@@ -1535,11 +1535,12 @@ static ssize_t smk_read_ambient(struct file *filp, char __user *buf,
*/
mutex_lock(&smack_ambient_lock);
- asize = strlen(smack_net_ambient) + 1;
+ asize = strlen(smack_net_ambient->smk_known) + 1;
if (cn >= asize)
rc = simple_read_from_buffer(buf, cn, ppos,
- smack_net_ambient, asize);
+ smack_net_ambient->smk_known,
+ asize);
else
rc = -EINVAL;
@@ -1560,8 +1561,8 @@ static ssize_t smk_read_ambient(struct file *filp, char __user *buf,
static ssize_t smk_write_ambient(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
+ struct smack_known *skp;
char *oldambient;
- char *smack = NULL;
char *data;
int rc = count;
@@ -1577,16 +1578,16 @@ static ssize_t smk_write_ambient(struct file *file, const char __user *buf,
goto out;
}
- smack = smk_import(data, count);
- if (smack == NULL) {
+ skp = smk_import_entry(data, count);
+ if (skp == NULL) {
rc = -EINVAL;
goto out;
}
mutex_lock(&smack_ambient_lock);
- oldambient = smack_net_ambient;
- smack_net_ambient = smack;
+ oldambient = smack_net_ambient->smk_known;
+ smack_net_ambient = skp;
smk_unlbl_ambient(oldambient);
mutex_unlock(&smack_ambient_lock);
@@ -1645,7 +1646,7 @@ static ssize_t smk_write_onlycap(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
char *data;
- char *sp = smk_of_task(current->cred->security);
+ struct smack_known *skp = smk_of_task(current->cred->security);
int rc = count;
if (!smack_privileged(CAP_MAC_ADMIN))
@@ -1656,7 +1657,7 @@ static ssize_t smk_write_onlycap(struct file *file, const char __user *buf,
* explicitly for clarity. The smk_access() implementation
* would use smk_access(smack_onlycap, MAY_WRITE)
*/
- if (smack_onlycap != NULL && smack_onlycap != sp)
+ if (smack_onlycap != NULL && smack_onlycap != skp->smk_known)
return -EPERM;
data = kzalloc(count, GFP_KERNEL);
@@ -1866,8 +1867,8 @@ static ssize_t smk_user_access(struct file *file, const char __user *buf,
if (res)
return -EINVAL;
- res = smk_access(rule.smk_subject, rule.smk_object, rule.smk_access1,
- NULL);
+ res = smk_access(rule.smk_subject, rule.smk_object,
+ rule.smk_access1, NULL);
data[0] = res == 0 ? '1' : '0';
data[1] = '\0';
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.