diff options
| author | Kevin Krakauer <krakauer@google.com> | 2019-04-10 16:33:44 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2019-04-10 16:34:50 -0700 |
| commit | c8368e477b8f2dedaadacbd6efbb455879c9b1d6 (patch) | |
| tree | 70fb83188b5be26b755ef3af885fa78dcecec6fe /test/syscalls | |
| parent | 89cc8eef9ba6440a5f1772bb2cd200da9b4890d9 (diff) | |
rlimits test: don't exceed nr_open.
Even superuser cannot raise RLIMIT_NOFILE above /proc/sys/fs/nr_open, so
start the test by lowering the limits before raising.
Change-Id: Ied6021c64178a6cb9098088a1a3384db523a226f
PiperOrigin-RevId: 242965249
Diffstat (limited to 'test/syscalls')
| -rw-r--r-- | test/syscalls/linux/rlimits.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/test/syscalls/linux/rlimits.cc b/test/syscalls/linux/rlimits.cc index 5a6174d99..7b255d0f6 100644 --- a/test/syscalls/linux/rlimits.cc +++ b/test/syscalls/linux/rlimits.cc @@ -29,6 +29,12 @@ TEST(RlimitTest, SetRlimitHigher) { struct rlimit rl = {}; EXPECT_THAT(getrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds()); + // Lower the rlimit first, as it may be equal to /proc/sys/fs/nr_open, in + // which case even users with CAP_SYS_RESOURCE can't raise it. + rl.rlim_cur--; + rl.rlim_max--; + ASSERT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds()); + rl.rlim_max++; EXPECT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds()); } |