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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-01-30 13:29:46 +0100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-01-30 16:23:03 +0100 |
commit | f2ed769880271654297a4be420f26ab94d39666b (patch) | |
tree | 4cbfc23184993e8ef11bb1d60b307cbb3644a259 /dhcpcd/compat/pollts.c | |
parent | arphole: New test (diff) | |
download | rtems-libbsd-f2ed769880271654297a4be420f26ab94d39666b.tar.bz2 |
DHCPCD(8): Import
Import DHCPCD(8) from:
http://roy.marples.name/projects/dhcpcd/
The upstream sources can be obtained via:
fossil clone http://roy.marples.name/projects/dhcpcd
The imported version is 2014-01-29 19:46:44 [6b209507bb].
Diffstat (limited to 'dhcpcd/compat/pollts.c')
-rw-r--r-- | dhcpcd/compat/pollts.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/dhcpcd/compat/pollts.c b/dhcpcd/compat/pollts.c new file mode 100644 index 00000000..232a87ea --- /dev/null +++ b/dhcpcd/compat/pollts.c @@ -0,0 +1,63 @@ +/* + * dhcpcd - DHCP client daemon + * Copyright (c) 2006-2013 Roy Marples <roy@marples.name> + * All rights reserved + + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/time.h> +#include <sys/types.h> + +#include <limits.h> +#include <poll.h> +#include <signal.h> +#include <unistd.h> + +#include "pollts.h" + +#warning "This pollts(2) implementation is not entirely race condition safe." +#warning "Only operating system support for pollts(2) can correct this." + +int +pollts(struct pollfd *restrict fds, nfds_t nfds, + const struct timespec *restrict ts, const sigset_t *restrict sigmask) +{ + int r, timeout; + sigset_t oldset; + + if (ts == NULL) + timeout = -1; + else if (ts->tv_sec > INT_MAX / 1000 || + (ts->tv_sec == INT_MAX / 1000 && + (ts->tv_nsec + 999999) / 1000000 > INT_MAX % 1000000)) + timeout = INT_MAX; + else + timeout = ts->tv_sec * 1000 + (ts->tv_nsec + 999999) / 1000000; + if (sigmask && sigprocmask(SIG_SETMASK, sigmask, &oldset) == -1) + return -1; + r = poll(fds, nfds, timeout); + if (sigmask && sigprocmask(SIG_SETMASK, &oldset, NULL) == -1) + return -1; + + return r; +} |