diff options
author | des <des@FreeBSD.org> | 2009-06-06 19:07:15 +0000 |
---|---|---|
committer | des <des@FreeBSD.org> | 2009-06-06 19:07:15 +0000 |
commit | 7758932884199b8e72ce2ee07f29a0a6614451ce (patch) | |
tree | e81838ea7ec1b60f0daa6ad9ec944e0b5fda485a /tools/regression/lib | |
parent | 94e760567d654ada216cd794352e9deca31dff08 (diff) | |
download | FreeBSD-src-7758932884199b8e72ce2ee07f29a0a6614451ce.zip FreeBSD-src-7758932884199b8e72ce2ee07f29a0a6614451ce.tar.gz |
Check that flopen() can lock against self and that children inherit the lock.
Diffstat (limited to 'tools/regression/lib')
-rw-r--r-- | tools/regression/lib/libutil/test-flopen.c | 47 |
1 files changed, 41 insertions, 6 deletions
diff --git a/tools/regression/lib/libutil/test-flopen.c b/tools/regression/lib/libutil/test-flopen.c index c8191d0..30b1b89 100644 --- a/tools/regression/lib/libutil/test-flopen.c +++ b/tools/regression/lib/libutil/test-flopen.c @@ -30,6 +30,7 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#include <sys/signal.h> #include <sys/types.h> #include <sys/fcntl.h> @@ -89,14 +90,13 @@ test_flopen_open(void) return (result); } -#if FLOPEN_CAN_LOCK_AGAINST_SELF /* * Test that flopen() can lock against itself */ const char * test_flopen_lock_self(void) { - const char *fn = "test_flopen_lock"; + const char *fn = "test_flopen_lock_self"; const char *result = NULL; int fd1, fd2; @@ -115,7 +115,6 @@ test_flopen_lock_self(void) unlink(fn); return (result); } -#endif /* * Test that flopen() can lock against other processes @@ -123,7 +122,7 @@ test_flopen_lock_self(void) const char * test_flopen_lock_other(void) { - const char *fn = "test_flopen_lock"; + const char *fn = "test_flopen_lock_other"; const char *result = NULL; volatile int fd1, fd2; @@ -148,16 +147,52 @@ test_flopen_lock_other(void) return (result); } +/* + * Test that child processes inherit the lock + */ +const char * +test_flopen_lock_child(void) +{ + const char *fn = "test_flopen_lock_child"; + const char *result = NULL; + pid_t pid; + volatile int fd1, fd2; + + unlink(fn); + fd1 = flopen(fn, O_RDWR|O_CREAT, 0640); + if (fd1 < 0) { + result = strerror(errno); + } else { + if ((pid = fork()) == 0) { + select(0, 0, 0, 0, 0); + _exit(0); + } + close(fd1); + fd2 = -42; + if (vfork() == 0) { + fd2 = flopen(fn, O_RDWR|O_NONBLOCK); + close(fd2); + _exit(0); + } + if (fd2 == -42) + result = "vfork() doesn't work as expected"; + if (fd2 >= 0) + result = "second open succeeded"; + kill(pid, SIGINT); + } + unlink(fn); + return (result); +} + static struct test { const char *name; const char *(*func)(void); } t[] = { { "flopen_create", test_flopen_create }, { "flopen_open", test_flopen_open }, -#if FLOPEN_CAN_LOCK_AGAINST_SELF { "flopen_lock_self", test_flopen_lock_self }, -#endif { "flopen_lock_other", test_flopen_lock_other }, + { "flopen_lock_child", test_flopen_lock_child }, }; int |