[PATCH] fs: check for CAP_SYS_RESOURCE instead of CAP_SYS_ADMIN
From: Nicolas Belouin <hidden>
Date: 2017-10-21 13:37:14
Also in:
linux-fsdevel, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
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 <redacted> --- 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