diff options
| author | alfred <alfred@FreeBSD.org> | 1999-08-19 23:06:11 +0000 |
|---|---|---|
| committer | alfred <alfred@FreeBSD.org> | 1999-08-19 23:06:11 +0000 |
| commit | 557b906ef8a8572a4a3828011b21ce414ce2e283 (patch) | |
| tree | 0ec3230edcd09a8395fca2f7d9285598e2025c07 /lib/libpthread/thread/thr_poll.c | |
| parent | 0b6fbc2a5b83ef6eb4b1a5f56ab141146e1d09cc (diff) | |
| download | FreeBSD-src-557b906ef8a8572a4a3828011b21ce414ce2e283.zip FreeBSD-src-557b906ef8a8572a4a3828011b21ce414ce2e283.tar.gz | |
Sanity check time structures passed in, return EINVAL like the system
calls do to avoid corrupting the thread library's concept of wakeup
time.
PR: kern/12141
Reviewed by: deischen, eivind
Diffstat (limited to 'lib/libpthread/thread/thr_poll.c')
| -rw-r--r-- | lib/libpthread/thread/thr_poll.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/libpthread/thread/thr_poll.c b/lib/libpthread/thread/thr_poll.c index a54d023..2acd725 100644 --- a/lib/libpthread/thread/thr_poll.c +++ b/lib/libpthread/thread/thr_poll.c @@ -29,7 +29,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id$ + * $Id: uthread_poll.c,v 1.1 1999/06/20 08:28:36 jb Exp $ */ #include <unistd.h> #include <errno.h> @@ -58,13 +58,16 @@ poll(struct pollfd *fds, unsigned int nfds, int timeout) if (timeout == INFTIM) { /* Wait for ever: */ _thread_kern_set_timeout(NULL); - } else if (timeout != 0) { + } else if (timeout > 0) { /* Convert the timeout in msec to a timespec: */ ts.tv_sec = timeout / 1000; ts.tv_nsec = (timeout % 1000) * 1000; /* Set the wake up time: */ _thread_kern_set_timeout(&ts); + } else if (timeout < 0) { + /* a timeout less than zero but not == INFTIM is invalid */ + return (EINVAL); } if (((ret = _thread_sys_poll(fds, numfds, 0)) == 0) && (timeout != 0)) { |
