io_jail: Add minijail_rlimit

The virtio-fs server opens a lot of fds and needs to have it's open file
limit increased.

BUG=b:136128319
TEST=run pjdfstests

Change-Id: I9ccc9e0753f990788c9cef2540b3a1aab5f5d15d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1890583
Tested-by: Chirantan Ekbote <chirantan@chromium.org>
Commit-Queue: Chirantan Ekbote <chirantan@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/io_jail/src/libminijail.rs b/io_jail/src/libminijail.rs
index f8c3654..227e753 100644
--- a/io_jail/src/libminijail.rs
+++ b/io_jail/src/libminijail.rs
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-use libc::{gid_t, pid_t, uid_t};
+use libc::{gid_t, pid_t, rlim_t, uid_t};
 use std::os::raw::{c_char, c_int, c_ulong};
 
 /// Struct minijail is an opaque type inside libminijail.
@@ -19,6 +19,7 @@ extern "C" {
     pub fn minijail_keep_supplementary_gids(j: *mut minijail);
     pub fn minijail_change_user(j: *mut minijail, user: *const c_char) -> c_int;
     pub fn minijail_change_group(j: *mut minijail, group: *const c_char) -> c_int;
+    pub fn minijail_rlimit(j: *mut minijail, kind: c_int, cur: rlim_t, max: rlim_t) -> c_int;
     pub fn minijail_use_seccomp(j: *mut minijail);
     pub fn minijail_no_new_privs(j: *mut minijail);
     pub fn minijail_use_seccomp_filter(j: *mut minijail);