diff options
| author | Steven Whitehouse <swhiteho@redhat.com> | 2006-07-03 10:25:08 -0400 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-07-03 10:25:08 -0400 |
| commit | 0a1340c185734a57fbf4775927966ad4a1347b02 (patch) | |
| tree | d9ed8f0dd809a7c542a3356601125ea5b5aaa804 /fs/ioprio.c | |
| parent | af18ddb8864b096e3ed4732e2d4b21c956dcfe3a (diff) | |
| parent | 29454dde27d8e340bb1987bad9aa504af7081eba (diff) | |
Merge rsync://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
include/linux/kernel.h
Diffstat (limited to 'fs/ioprio.c')
| -rw-r--r-- | fs/ioprio.c | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/fs/ioprio.c b/fs/ioprio.c index ca77008146c..93aa5715f22 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; @@ -119,11 +125,24 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio) return ret; } +static int get_task_ioprio(struct task_struct *p) +{ + int ret; + + ret = security_task_getioprio(p); + if (ret) + goto out; + ret = p->ioprio; +out: + return ret; +} + asmlinkage long sys_ioprio_get(int which, int who) { struct task_struct *g, *p; struct user_struct *user; int ret = -ESRCH; + int tmpio; read_lock_irq(&tasklist_lock); switch (which) { @@ -133,16 +152,19 @@ asmlinkage long sys_ioprio_get(int which, int who) else p = find_task_by_pid(who); if (p) - ret = p->ioprio; + ret = get_task_ioprio(p); break; case IOPRIO_WHO_PGRP: if (!who) who = process_group(current); do_each_task_pid(who, PIDTYPE_PGID, p) { + tmpio = get_task_ioprio(p); + if (tmpio < 0) + continue; if (ret == -ESRCH) - ret = p->ioprio; + ret = tmpio; else - ret = ioprio_best(ret, p->ioprio); + ret = ioprio_best(ret, tmpio); } while_each_task_pid(who, PIDTYPE_PGID, p); break; case IOPRIO_WHO_USER: @@ -157,10 +179,13 @@ asmlinkage long sys_ioprio_get(int which, int who) do_each_thread(g, p) { if (p->uid != user->uid) continue; + tmpio = get_task_ioprio(p); + if (tmpio < 0) + continue; if (ret == -ESRCH) - ret = p->ioprio; + ret = tmpio; else - ret = ioprio_best(ret, p->ioprio); + ret = ioprio_best(ret, tmpio); } while_each_thread(g, p); if (who) |