[PATCH] fs: check for CAP_SYS_RESOURCE instead of CAP_SYS_ADMIN

[Nicolas Belouin]

This check is meant to allow a privileged process to go above max_files,
such a check must be done against CAP_SYS_RESOURCE as its role is to
allow resources limits override.

Signed-off-by: Nicolas Belouin <nico...@belouin.fr>
---
 fs/file_table.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/file_table.c b/fs/file_table.c
index 61517f57f8ef..4bc74fd50838 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -111,7 +111,8 @@ struct file *get_empty_filp(void)
        /*
         * Privileged users can go above max_files
         */
-       if (get_nr_files() >= files_stat.max_files && !capable(CAP_SYS_ADMIN)) {
+       if (get_nr_files() >= files_stat.max_files && !capable(CAP_SYS_ADMIN) &&
+           !capable(CAP_SYS_RESOURCE)) {
                /*
                 * percpu_counters are inaccurate.  Do an expensive check before
                 * we go and fail.
-- 
2.14.2