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| author | Ahmed S. Darwish <darwish.07@gmail.com> | 2008-03-01 20:51:09 +0100 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2008-04-19 01:52:32 +0200 |
| commit | 8a076191f373abaeb4aa5f6755d22e49db98940f (patch) | |
| tree | 1311a11332abb0828999a7347a07509a68dffb5f /security | |
| parent | x86 PAT: fix mmap() of holes (diff) | |
| download | linux-8a076191f373abaeb4aa5f6755d22e49db98940f.tar.xz linux-8a076191f373abaeb4aa5f6755d22e49db98940f.zip | |
LSM: Introduce inode_getsecid and ipc_getsecid hooks
Introduce inode_getsecid(inode, secid) and ipc_getsecid(ipcp, secid)
LSM hooks. These hooks will be used instead of similar exported
SELinux interfaces.
Let {inode,ipc,task}_getsecid hooks set the secid to 0 by default
if CONFIG_SECURITY is not defined or if the hook is set to
NULL (dummy). This is done to notify the caller that no valid
secid exists.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Acked-by: James Morris <jmorris@namei.org>
Reviewed-by: Paul Moore <paul.moore@hp.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/dummy.c | 16 | ||||
| -rw-r--r-- | security/security.c | 10 |
2 files changed, 25 insertions, 1 deletions
diff --git a/security/dummy.c b/security/dummy.c index 78d8f92310a4..fb2e942efbb6 100644 --- a/security/dummy.c +++ b/security/dummy.c @@ -424,6 +424,11 @@ static int dummy_inode_listsecurity(struct inode *inode, char *buffer, size_t bu return 0; } +static void dummy_inode_getsecid(const struct inode *inode, u32 *secid) +{ + *secid = 0; +} + static int dummy_file_permission (struct file *file, int mask) { return 0; @@ -542,7 +547,9 @@ static int dummy_task_getsid (struct task_struct *p) } static void dummy_task_getsecid (struct task_struct *p, u32 *secid) -{ } +{ + *secid = 0; +} static int dummy_task_setgroups (struct group_info *group_info) { @@ -616,6 +623,11 @@ static int dummy_ipc_permission (struct kern_ipc_perm *ipcp, short flag) return 0; } +static void dummy_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) +{ + *secid = 0; +} + static int dummy_msg_msg_alloc_security (struct msg_msg *msg) { return 0; @@ -1058,6 +1070,7 @@ void security_fixup_ops (struct security_operations *ops) set_to_dummy_if_null(ops, inode_getsecurity); set_to_dummy_if_null(ops, inode_setsecurity); set_to_dummy_if_null(ops, inode_listsecurity); + set_to_dummy_if_null(ops, inode_getsecid); set_to_dummy_if_null(ops, file_permission); set_to_dummy_if_null(ops, file_alloc_security); set_to_dummy_if_null(ops, file_free_security); @@ -1094,6 +1107,7 @@ void security_fixup_ops (struct security_operations *ops) set_to_dummy_if_null(ops, task_reparent_to_init); set_to_dummy_if_null(ops, task_to_inode); set_to_dummy_if_null(ops, ipc_permission); + set_to_dummy_if_null(ops, ipc_getsecid); set_to_dummy_if_null(ops, msg_msg_alloc_security); set_to_dummy_if_null(ops, msg_msg_free_security); set_to_dummy_if_null(ops, msg_queue_alloc_security); diff --git a/security/security.c b/security/security.c index 9beecac933b4..290482bdbbb0 100644 --- a/security/security.c +++ b/security/security.c @@ -523,6 +523,11 @@ int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer return security_ops->inode_listsecurity(inode, buffer, buffer_size); } +void security_inode_getsecid(const struct inode *inode, u32 *secid) +{ + security_ops->inode_getsecid(inode, secid); +} + int security_file_permission(struct file *file, int mask) { return security_ops->file_permission(file, mask); @@ -712,6 +717,11 @@ int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) return security_ops->ipc_permission(ipcp, flag); } +void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) +{ + security_ops->ipc_getsecid(ipcp, secid); +} + int security_msg_msg_alloc(struct msg_msg *msg) { return security_ops->msg_msg_alloc_security(msg); |