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pipe: change the privilege required for growing a pipe beyond system max 

Change it to CAP_SYS_RESOURCE, as that more accurately models what
we want to control.

Suggested-by: Michael Kerrisk <mtk.manpages@googlemail.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Jens Axboe 2010-06-03 12:45:28 +02:00
parent 6a6ca57de9
commit 419f8367ea
1 changed files with 1 additions and 1 deletions
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2
fs/pipe.c
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@ -1178,7 +1178,7 @@ long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
nr_pages = (arg + PAGE_SIZE - 1) >> PAGE_SHIFT;
nr_pages = roundup_pow_of_two(nr_pages);
if (!capable(CAP_SYS_ADMIN) && nr_pages > pipe_max_pages) {
if (!capable(CAP_SYS_RESOURCE) && nr_pages > pipe_max_pages) {
ret = -EPERM;
goto out;
} else if (nr_pages < 1) {