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authorEric Paris <eparis@redhat.com>2009-11-03 16:35:32 +1100
committerJames Morris <jmorris@namei.org>2009-11-10 09:33:46 +1100
commitdd8dbf2e6880e30c00b18600c962d0cb5a03c555 (patch)
tree24835aaf40cec5ceb2aeecccde9240ee173f70f1 /include
parent6e65f92ff0d6f18580737321718d09035085a3fb (diff)
security: report the module name to security_module_request
For SELinux to do better filtering in userspace we send the name of the module along with the AVC denial when a program is denied module_request. Example output: type=SYSCALL msg=audit(11/03/2009 10:59:43.510:9) : arch=x86_64 syscall=write success=yes exit=2 a0=3 a1=7fc28c0d56c0 a2=2 a3=7fffca0d7440 items=0 ppid=1727 pid=1729 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=rpc.nfsd exe=/usr/sbin/rpc.nfsd subj=system_u:system_r:nfsd_t:s0 key=(null) type=AVC msg=audit(11/03/2009 10:59:43.510:9) : avc: denied { module_request } for pid=1729 comm=rpc.nfsd kmod="net-pf-10" scontext=system_u:system_r:nfsd_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=system Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/lsm_audit.h18
-rw-r--r--include/linux/security.h7
2 files changed, 14 insertions, 11 deletions
diff --git a/include/linux/lsm_audit.h b/include/linux/lsm_audit.h
index 190c3785487..f78f83d7663 100644
--- a/include/linux/lsm_audit.h
+++ b/include/linux/lsm_audit.h
@@ -26,14 +26,15 @@
/* Auxiliary data to use in generating the audit record. */
struct common_audit_data {
- char type;
-#define LSM_AUDIT_DATA_FS 1
-#define LSM_AUDIT_DATA_NET 2
-#define LSM_AUDIT_DATA_CAP 3
-#define LSM_AUDIT_DATA_IPC 4
-#define LSM_AUDIT_DATA_TASK 5
-#define LSM_AUDIT_DATA_KEY 6
-#define LSM_AUDIT_NO_AUDIT 7
+ char type;
+#define LSM_AUDIT_DATA_FS 1
+#define LSM_AUDIT_DATA_NET 2
+#define LSM_AUDIT_DATA_CAP 3
+#define LSM_AUDIT_DATA_IPC 4
+#define LSM_AUDIT_DATA_TASK 5
+#define LSM_AUDIT_DATA_KEY 6
+#define LSM_AUDIT_NO_AUDIT 7
+#define LSM_AUDIT_DATA_KMOD 8
struct task_struct *tsk;
union {
struct {
@@ -66,6 +67,7 @@ struct common_audit_data {
char *key_desc;
} key_struct;
#endif
+ char *kmod_name;
} u;
/* this union contains LSM specific data */
union {
diff --git a/include/linux/security.h b/include/linux/security.h
index ed0faea60b8..466cbadbd1e 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -706,6 +706,7 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
* @kernel_module_request:
* Ability to trigger the kernel to automatically upcall to userspace for
* userspace to load a kernel module with the given name.
+ * @kmod_name name of the module requested by the kernel
* Return 0 if successful.
* @task_setuid:
* Check permission before setting one or more of the user identity
@@ -1577,7 +1578,7 @@ struct security_operations {
void (*cred_transfer)(struct cred *new, const struct cred *old);
int (*kernel_act_as)(struct cred *new, u32 secid);
int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
- int (*kernel_module_request)(void);
+ int (*kernel_module_request)(char *kmod_name);
int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
int (*task_fix_setuid) (struct cred *new, const struct cred *old,
int flags);
@@ -1842,7 +1843,7 @@ void security_commit_creds(struct cred *new, const struct cred *old);
void security_transfer_creds(struct cred *new, const struct cred *old);
int security_kernel_act_as(struct cred *new, u32 secid);
int security_kernel_create_files_as(struct cred *new, struct inode *inode);
-int security_kernel_module_request(void);
+int security_kernel_module_request(char *kmod_name);
int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
int security_task_fix_setuid(struct cred *new, const struct cred *old,
int flags);
@@ -2407,7 +2408,7 @@ static inline int security_kernel_create_files_as(struct cred *cred,
return 0;
}
-static inline int security_kernel_module_request(void)
+static inline int security_kernel_module_request(char *kmod_name)
{
return 0;
}