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authorJames Morris <jmorris@namei.org>2006-06-23 02:03:58 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:42:53 -0700
commit03e68060636e05989ea94bcb671ab633948f328c (patch)
treeaee5e7b55f31998536dd3a4f54f38caeee6105d6 /fs/ioprio.c
parent9216dfad4fc97ab639ef0885efc713f3d7a20d5b (diff)
downloadlinux-03e68060636e05989ea94bcb671ab633948f328c.tar.gz
[PATCH] lsm: add task_setioprio hook
Implement an LSM hook for setting a task's IO priority, similar to the hook for setting a tasks's nice value. A previous version of this LSM hook was included in an older version of multiadm by Jan Engelhardt, although I don't recall it being submitted upstream. Also included is the corresponding SELinux hook, which re-uses the setsched permission in the proccess class. Signed-off-by: James Morris <jmorris@namei.org> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Cc: Chris Wright <chrisw@sous-sol.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 'fs/ioprio.c')
-rw-r--r--fs/ioprio.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ioprio.c b/fs/ioprio.c
index ca77008146c..7fa76ed53c1 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -24,15 +24,21 @@
#include <linux/blkdev.h>
#include <linux/capability.h>
#include <linux/syscalls.h>
+#include <linux/security.h>
static int set_task_ioprio(struct task_struct *task, int ioprio)
{
+ int err;
struct io_context *ioc;
if (task->uid != current->euid &&
task->uid != current->uid && !capable(CAP_SYS_NICE))
return -EPERM;
+ err = security_task_setioprio(task, ioprio);
+ if (err)
+ return err;
+
task_lock(task);
task->ioprio = ioprio;