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| author | David Quigley <dpquigl@tycho.nsa.gov> | 2006-06-30 01:55:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-30 11:25:37 -0700 |
| commit | a1836a42daf5ddfe9a891973734bd9a7d62eb504 (patch) | |
| tree | e8819aec40aff3fa0eecd2ef9d92df8213bce58b /security | |
| parent | 7a01955f99b65622a00ba5c8b39202ddc6fa65f8 (diff) | |
| download | linux-a1836a42daf5ddfe9a891973734bd9a7d62eb504.tar.bz2 | |
[PATCH] SELinux: Add security hook definition for getioprio and insert hooks
Add a new security hook definition for the sys_ioprio_get operation. At
present, the SELinux hook function implementation for this hook is
identical to the getscheduler implementation but a separate hook is
introduced to allow this check to be specialized in the future if
necessary.
This patch also creates a helper function get_task_ioprio which handles the
access check in addition to retrieving the ioprio value for the task.
Signed-off-by: David Quigley <dpquigl@tycho.nsa.gov>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/dummy.c | 6 | ||||
| -rw-r--r-- | security/selinux/hooks.c | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/security/dummy.c b/security/dummy.c index de53f6eb0c08..d417936562db 100644 --- a/security/dummy.c +++ b/security/dummy.c @@ -524,6 +524,11 @@ static int dummy_task_setioprio (struct task_struct *p, int ioprio) return 0; } +static int dummy_task_getioprio (struct task_struct *p) +{ + return 0; +} + static int dummy_task_setrlimit (unsigned int resource, struct rlimit *new_rlim) { return 0; @@ -988,6 +993,7 @@ void security_fixup_ops (struct security_operations *ops) set_to_dummy_if_null(ops, task_setgroups); set_to_dummy_if_null(ops, task_setnice); set_to_dummy_if_null(ops, task_setioprio); + set_to_dummy_if_null(ops, task_getioprio); set_to_dummy_if_null(ops, task_setrlimit); set_to_dummy_if_null(ops, task_setscheduler); set_to_dummy_if_null(ops, task_getscheduler); diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index a5189a347354..51bec4c88f19 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -2671,6 +2671,11 @@ static int selinux_task_setioprio(struct task_struct *p, int ioprio) return task_has_perm(current, p, PROCESS__SETSCHED); } +static int selinux_task_getioprio(struct task_struct *p) +{ + return task_has_perm(current, p, PROCESS__GETSCHED); +} + static int selinux_task_setrlimit(unsigned int resource, struct rlimit *new_rlim) { struct rlimit *old_rlim = current->signal->rlim + resource; @@ -4449,6 +4454,7 @@ static struct security_operations selinux_ops = { .task_setgroups = selinux_task_setgroups, .task_setnice = selinux_task_setnice, .task_setioprio = selinux_task_setioprio, + .task_getioprio = selinux_task_getioprio, .task_setrlimit = selinux_task_setrlimit, .task_setscheduler = selinux_task_setscheduler, .task_getscheduler = selinux_task_getscheduler, |