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| author | Ulrich Drepper <drepper@gmail.com> | 2011-05-16 09:35:51 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2011-05-16 09:35:51 -0400 |
| commit | 68a3f91fcad464c4737c1eaed4ae0bf539801fb2 (patch) | |
| tree | 759c77da645a8dae65ae83cbe97a792197c9fa8c | |
| parent | 15cc7dd182a6be79cbb01a5de4f13e958717bd69 (diff) | |
| download | glibc-68a3f91fcad464c4737c1eaed4ae0bf539801fb2.tar.gz glibc-68a3f91fcad464c4737c1eaed4ae0bf539801fb2.tar.xz glibc-68a3f91fcad464c4737c1eaed4ae0bf539801fb2.zip | |
Fix reporting of invalid timeouts in emulated pselect
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | NEWS | 14 | ||||
| -rw-r--r-- | misc/pselect.c | 14 |
3 files changed, 23 insertions, 9 deletions
diff --git a/ChangeLog b/ChangeLog index c04155975d..b830ff8f35 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2011-05-16 Ulrich Drepper <drepper@gmail.com> + [BZ #11895] + * misc/pselect.c (__pselect): Handle timeout value errors hidden + through underflows. + [BZ #12766] * misc/error.c (error_at_line): Ensure file_name and old_file_name point to strings before performing equality test for error_one_per_line diff --git a/NEWS b/NEWS index ef27e60428..d8ced3cac8 100644 --- a/NEWS +++ b/NEWS @@ -10,13 +10,13 @@ Version 2.14 * The following bugs are resolved with this release: 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11257, 11258, - 11487, 11532, 11578, 11653, 11668, 11697, 11724, 11820, 11901, 11945, - 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12393, - 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489, 12509, - 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583, 12587, - 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655, 12660, - 12681, 12685, 12711, 12713, 12714, 12717, 12723, 12724, 12734, 12738, - 12746, 12766 + 11487, 11532, 11578, 11653, 11668, 11697, 11724, 11820, 11895, 11901, + 11945, 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, + 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489, + 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583, + 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655, + 12660, 12681, 12685, 12711, 12713, 12714, 12717, 12723, 12724, 12734, + 12738, 12746, 12766 * The RPC implementation in libc is obsoleted. Old programs keep working but new programs cannot be linked with the routines in libc anymore. diff --git a/misc/pselect.c b/misc/pselect.c index 80cf8be4b3..e29d7b36ad 100644 --- a/misc/pselect.c +++ b/misc/pselect.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996-1998,2001,2002,2003,2006 Free Software Foundation, Inc. +/* Copyright (C) 1996-1998,2001-2003,2006,2011 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. @@ -43,7 +43,17 @@ __pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, precision and therefore the `pselect` should be available. But for now it is hardly found. */ if (timeout != NULL) - TIMESPEC_TO_TIMEVAL (&tval, timeout); + { + /* Catch bugs which would be hidden by the TIMESPEC_TO_TIMEVAL + computations. The division by 1000 truncates values. */ + if (__builtin_expect (timeout->tv_nsec < 0, 0)) + { + __set_errno (EINVAL); + return -1; + } + + TIMESPEC_TO_TIMEVAL (&tval, timeout); + } /* The setting and restoring of the signal mask and the select call should be an atomic operation. This can't be done without kernel |