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-rw-r--r--security/integrity/ima/ima.h10
-rw-r--r--security/integrity/ima/ima_api.c6
-rw-r--r--security/integrity/ima/ima_appraise.c14
-rw-r--r--security/integrity/ima/ima_asymmetric_keys.c2
-rw-r--r--security/integrity/ima/ima_main.c26
-rw-r--r--security/integrity/ima/ima_policy.c11
-rw-r--r--security/integrity/ima/ima_queue_keys.c2
7 files changed, 36 insertions, 35 deletions
diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h
index 03b440921e61..d8530e722515 100644
--- a/security/integrity/ima/ima.h
+++ b/security/integrity/ima/ima.h
@@ -254,7 +254,7 @@ static inline void ima_process_queued_keys(void) {}
#endif /* CONFIG_IMA_QUEUE_EARLY_BOOT_KEYS */
/* LIM API function definitions */
-int ima_get_action(struct user_namespace *mnt_userns, struct inode *inode,
+int ima_get_action(struct mnt_idmap *idmap, struct inode *inode,
const struct cred *cred, u32 secid, int mask,
enum ima_hooks func, int *pcr,
struct ima_template_desc **template_desc,
@@ -268,7 +268,7 @@ void ima_store_measurement(struct integrity_iint_cache *iint, struct file *file,
struct evm_ima_xattr_data *xattr_value,
int xattr_len, const struct modsig *modsig, int pcr,
struct ima_template_desc *template_desc);
-int process_buffer_measurement(struct user_namespace *mnt_userns,
+int process_buffer_measurement(struct mnt_idmap *idmap,
struct inode *inode, const void *buf, int size,
const char *eventname, enum ima_hooks func,
int pcr, const char *func_data,
@@ -285,7 +285,7 @@ void ima_free_template_entry(struct ima_template_entry *entry);
const char *ima_d_path(const struct path *path, char **pathbuf, char *filename);
/* IMA policy related functions */
-int ima_match_policy(struct user_namespace *mnt_userns, struct inode *inode,
+int ima_match_policy(struct mnt_idmap *idmap, struct inode *inode,
const struct cred *cred, u32 secid, enum ima_hooks func,
int mask, int flags, int *pcr,
struct ima_template_desc **template_desc,
@@ -318,7 +318,7 @@ int ima_appraise_measurement(enum ima_hooks func,
struct file *file, const unsigned char *filename,
struct evm_ima_xattr_data *xattr_value,
int xattr_len, const struct modsig *modsig);
-int ima_must_appraise(struct user_namespace *mnt_userns, struct inode *inode,
+int ima_must_appraise(struct mnt_idmap *idmap, struct inode *inode,
int mask, enum ima_hooks func);
void ima_update_xattr(struct integrity_iint_cache *iint, struct file *file);
enum integrity_status ima_get_cache_status(struct integrity_iint_cache *iint,
@@ -346,7 +346,7 @@ static inline int ima_appraise_measurement(enum ima_hooks func,
return INTEGRITY_UNKNOWN;
}
-static inline int ima_must_appraise(struct user_namespace *mnt_userns,
+static inline int ima_must_appraise(struct mnt_idmap *idmap,
struct inode *inode, int mask,
enum ima_hooks func)
{
diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
index c1e76282b5ee..9345fd66f5b8 100644
--- a/security/integrity/ima/ima_api.c
+++ b/security/integrity/ima/ima_api.c
@@ -163,7 +163,7 @@ err_out:
/**
* ima_get_action - appraise & measure decision based on policy.
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @inode: pointer to the inode associated with the object being validated
* @cred: pointer to credentials structure to validate
* @secid: secid of the task being validated
@@ -186,7 +186,7 @@ err_out:
* Returns IMA_MEASURE, IMA_APPRAISE mask.
*
*/
-int ima_get_action(struct user_namespace *mnt_userns, struct inode *inode,
+int ima_get_action(struct mnt_idmap *idmap, struct inode *inode,
const struct cred *cred, u32 secid, int mask,
enum ima_hooks func, int *pcr,
struct ima_template_desc **template_desc,
@@ -196,7 +196,7 @@ int ima_get_action(struct user_namespace *mnt_userns, struct inode *inode,
flags &= ima_policy_flag;
- return ima_match_policy(mnt_userns, inode, cred, secid, func, mask,
+ return ima_match_policy(idmap, inode, cred, secid, func, mask,
flags, pcr, template_desc, func_data,
allowed_algos);
}
diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c
index 734a6818a545..4078a9ad8531 100644
--- a/security/integrity/ima/ima_appraise.c
+++ b/security/integrity/ima/ima_appraise.c
@@ -70,7 +70,7 @@ bool is_ima_appraise_enabled(void)
*
* Return 1 to appraise or hash
*/
-int ima_must_appraise(struct user_namespace *mnt_userns, struct inode *inode,
+int ima_must_appraise(struct mnt_idmap *idmap, struct inode *inode,
int mask, enum ima_hooks func)
{
u32 secid;
@@ -79,7 +79,7 @@ int ima_must_appraise(struct user_namespace *mnt_userns, struct inode *inode,
return 0;
security_current_getsecid_subj(&secid);
- return ima_match_policy(mnt_userns, inode, current_cred(), secid,
+ return ima_match_policy(idmap, inode, current_cred(), secid,
func, mask, IMA_APPRAISE | IMA_HASH, NULL,
NULL, NULL, NULL);
}
@@ -98,7 +98,7 @@ static int ima_fix_xattr(struct dentry *dentry,
iint->ima_hash->xattr.ng.type = IMA_XATTR_DIGEST_NG;
iint->ima_hash->xattr.ng.algo = algo;
}
- rc = __vfs_setxattr_noperm(&init_user_ns, dentry, XATTR_NAME_IMA,
+ rc = __vfs_setxattr_noperm(&nop_mnt_idmap, dentry, XATTR_NAME_IMA,
&iint->ima_hash->xattr.data[offset],
(sizeof(iint->ima_hash->xattr) - offset) +
iint->ima_hash->length, 0);
@@ -456,7 +456,7 @@ int ima_check_blacklist(struct integrity_iint_cache *iint,
rc = is_binary_blacklisted(digest, digestsize);
if ((rc == -EPERM) && (iint->flags & IMA_MEASURE))
- process_buffer_measurement(&init_user_ns, NULL, digest, digestsize,
+ process_buffer_measurement(&nop_mnt_idmap, NULL, digest, digestsize,
"blacklisted-hash", NONE,
pcr, NULL, false, NULL, 0);
}
@@ -622,7 +622,7 @@ void ima_update_xattr(struct integrity_iint_cache *iint, struct file *file)
/**
* ima_inode_post_setattr - reflect file metadata changes
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @dentry: pointer to the affected dentry
*
* Changes to a dentry's metadata might result in needing to appraise.
@@ -630,7 +630,7 @@ void ima_update_xattr(struct integrity_iint_cache *iint, struct file *file)
* This function is called from notify_change(), which expects the caller
* to lock the inode's i_mutex.
*/
-void ima_inode_post_setattr(struct user_namespace *mnt_userns,
+void ima_inode_post_setattr(struct mnt_idmap *idmap,
struct dentry *dentry)
{
struct inode *inode = d_backing_inode(dentry);
@@ -641,7 +641,7 @@ void ima_inode_post_setattr(struct user_namespace *mnt_userns,
|| !(inode->i_opflags & IOP_XATTR))
return;
- action = ima_must_appraise(mnt_userns, inode, MAY_ACCESS, POST_SETATTR);
+ action = ima_must_appraise(idmap, inode, MAY_ACCESS, POST_SETATTR);
iint = integrity_iint_find(inode);
if (iint) {
set_bit(IMA_CHANGE_ATTR, &iint->atomic_flags);
diff --git a/security/integrity/ima/ima_asymmetric_keys.c b/security/integrity/ima/ima_asymmetric_keys.c
index f6aa0b47a772..caacfe6860b1 100644
--- a/security/integrity/ima/ima_asymmetric_keys.c
+++ b/security/integrity/ima/ima_asymmetric_keys.c
@@ -60,7 +60,7 @@ void ima_post_key_create_or_update(struct key *keyring, struct key *key,
* if the IMA policy is configured to measure a key linked
* to the given keyring.
*/
- process_buffer_measurement(&init_user_ns, NULL, payload, payload_len,
+ process_buffer_measurement(&nop_mnt_idmap, NULL, payload, payload_len,
keyring->description, KEY_CHECK, 0,
keyring->description, false, NULL, 0);
}
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 377300973e6c..358578267fea 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -224,7 +224,7 @@ static int process_measurement(struct file *file, const struct cred *cred,
* bitmask based on the appraise/audit/measurement policy.
* Included is the appraise submask.
*/
- action = ima_get_action(file_mnt_user_ns(file), inode, cred, secid,
+ action = ima_get_action(file_mnt_idmap(file), inode, cred, secid,
mask, func, &pcr, &template_desc, NULL,
&allowed_algos);
violation_check = ((func == FILE_CHECK || func == MMAP_CHECK) &&
@@ -451,7 +451,7 @@ int ima_file_mprotect(struct vm_area_struct *vma, unsigned long prot)
security_current_getsecid_subj(&secid);
inode = file_inode(vma->vm_file);
- action = ima_get_action(file_mnt_user_ns(vma->vm_file), inode,
+ action = ima_get_action(file_mnt_idmap(vma->vm_file), inode,
current_cred(), secid, MAY_EXEC, MMAP_CHECK,
&pcr, &template, NULL, NULL);
@@ -638,14 +638,14 @@ EXPORT_SYMBOL_GPL(ima_inode_hash);
/**
* ima_post_create_tmpfile - mark newly created tmpfile as new
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @inode: inode of the newly created tmpfile
*
* No measuring, appraising or auditing of newly created tmpfiles is needed.
* Skip calling process_measurement(), but indicate which newly, created
* tmpfiles are in policy.
*/
-void ima_post_create_tmpfile(struct user_namespace *mnt_userns,
+void ima_post_create_tmpfile(struct mnt_idmap *idmap,
struct inode *inode)
{
struct integrity_iint_cache *iint;
@@ -654,7 +654,7 @@ void ima_post_create_tmpfile(struct user_namespace *mnt_userns,
if (!ima_policy_flag || !S_ISREG(inode->i_mode))
return;
- must_appraise = ima_must_appraise(mnt_userns, inode, MAY_ACCESS,
+ must_appraise = ima_must_appraise(idmap, inode, MAY_ACCESS,
FILE_CHECK);
if (!must_appraise)
return;
@@ -671,13 +671,13 @@ void ima_post_create_tmpfile(struct user_namespace *mnt_userns,
/**
* ima_post_path_mknod - mark as a new inode
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @dentry: newly created dentry
*
* Mark files created via the mknodat syscall as new, so that the
* file data can be written later.
*/
-void ima_post_path_mknod(struct user_namespace *mnt_userns,
+void ima_post_path_mknod(struct mnt_idmap *idmap,
struct dentry *dentry)
{
struct integrity_iint_cache *iint;
@@ -687,7 +687,7 @@ void ima_post_path_mknod(struct user_namespace *mnt_userns,
if (!ima_policy_flag || !S_ISREG(inode->i_mode))
return;
- must_appraise = ima_must_appraise(mnt_userns, inode, MAY_ACCESS,
+ must_appraise = ima_must_appraise(idmap, inode, MAY_ACCESS,
FILE_CHECK);
if (!must_appraise)
return;
@@ -869,7 +869,7 @@ int ima_post_load_data(char *buf, loff_t size,
/**
* process_buffer_measurement - Measure the buffer or the buffer data hash
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @inode: inode associated with the object being measured (NULL for KEY_CHECK)
* @buf: pointer to the buffer that needs to be added to the log.
* @size: size of buffer(in bytes).
@@ -887,7 +887,7 @@ int ima_post_load_data(char *buf, loff_t size,
* has been written to the passed location but not added to a measurement entry,
* a negative value otherwise.
*/
-int process_buffer_measurement(struct user_namespace *mnt_userns,
+int process_buffer_measurement(struct mnt_idmap *idmap,
struct inode *inode, const void *buf, int size,
const char *eventname, enum ima_hooks func,
int pcr, const char *func_data,
@@ -931,7 +931,7 @@ int process_buffer_measurement(struct user_namespace *mnt_userns,
*/
if (func) {
security_current_getsecid_subj(&secid);
- action = ima_get_action(mnt_userns, inode, current_cred(),
+ action = ima_get_action(idmap, inode, current_cred(),
secid, 0, func, &pcr, &template,
func_data, NULL);
if (!(action & IMA_MEASURE) && !digest)
@@ -1011,7 +1011,7 @@ void ima_kexec_cmdline(int kernel_fd, const void *buf, int size)
if (!f.file)
return;
- process_buffer_measurement(file_mnt_user_ns(f.file), file_inode(f.file),
+ process_buffer_measurement(file_mnt_idmap(f.file), file_inode(f.file),
buf, size, "kexec-cmdline", KEXEC_CMDLINE, 0,
NULL, false, NULL, 0);
fdput(f);
@@ -1044,7 +1044,7 @@ int ima_measure_critical_data(const char *event_label,
if (!event_name || !event_label || !buf || !buf_len)
return -ENOPARAM;
- return process_buffer_measurement(&init_user_ns, NULL, buf, buf_len,
+ return process_buffer_measurement(&nop_mnt_idmap, NULL, buf, buf_len,
event_name, CRITICAL_DATA, 0,
event_label, hash, digest,
digest_len);
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index 6a68ec270822..2ba72bc5d9c2 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -552,7 +552,7 @@ static bool ima_match_rule_data(struct ima_rule_entry *rule,
/**
* ima_match_rules - determine whether an inode matches the policy rule.
* @rule: a pointer to a rule
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @inode: a pointer to an inode
* @cred: a pointer to a credentials structure for user validation
* @secid: the secid of the task to be validated
@@ -563,7 +563,7 @@ static bool ima_match_rule_data(struct ima_rule_entry *rule,
* Returns true on rule match, false on failure.
*/
static bool ima_match_rules(struct ima_rule_entry *rule,
- struct user_namespace *mnt_userns,
+ struct mnt_idmap *idmap,
struct inode *inode, const struct cred *cred,
u32 secid, enum ima_hooks func, int mask,
const char *func_data)
@@ -572,6 +572,7 @@ static bool ima_match_rules(struct ima_rule_entry *rule,
bool result = false;
struct ima_rule_entry *lsm_rule = rule;
bool rule_reinitialized = false;
+ struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
if ((rule->flags & IMA_FUNC) &&
(rule->func != func && func != POST_SETATTR))
@@ -713,7 +714,7 @@ static int get_subaction(struct ima_rule_entry *rule, enum ima_hooks func)
/**
* ima_match_policy - decision based on LSM and other conditions
- * @mnt_userns: user namespace of the mount the inode was found from
+ * @idmap: idmap of the mount the inode was found from
* @inode: pointer to an inode for which the policy decision is being made
* @cred: pointer to a credentials structure for which the policy decision is
* being made
@@ -732,7 +733,7 @@ static int get_subaction(struct ima_rule_entry *rule, enum ima_hooks func)
* list when walking it. Reads are many orders of magnitude more numerous
* than writes so ima_match_policy() is classical RCU candidate.
*/
-int ima_match_policy(struct user_namespace *mnt_userns, struct inode *inode,
+int ima_match_policy(struct mnt_idmap *idmap, struct inode *inode,
const struct cred *cred, u32 secid, enum ima_hooks func,
int mask, int flags, int *pcr,
struct ima_template_desc **template_desc,
@@ -752,7 +753,7 @@ int ima_match_policy(struct user_namespace *mnt_userns, struct inode *inode,
if (!(entry->action & actmask))
continue;
- if (!ima_match_rules(entry, mnt_userns, inode, cred, secid,
+ if (!ima_match_rules(entry, idmap, inode, cred, secid,
func, mask, func_data))
continue;
diff --git a/security/integrity/ima/ima_queue_keys.c b/security/integrity/ima/ima_queue_keys.c
index 93056c03bf5a..4f0aea155bf9 100644
--- a/security/integrity/ima/ima_queue_keys.c
+++ b/security/integrity/ima/ima_queue_keys.c
@@ -159,7 +159,7 @@ void ima_process_queued_keys(void)
list_for_each_entry_safe(entry, tmp, &ima_keys, list) {
if (!timer_expired)
- process_buffer_measurement(&init_user_ns, NULL,
+ process_buffer_measurement(&nop_mnt_idmap, NULL,
entry->payload,
entry->payload_len,
entry->keyring_name,
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-17 20:23:11 +0300