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WORKAROUND: signalfd(2) flags are broken on kernels older than Linux 2.6.27

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git-svn-id: svn://svn.code.sf.net/p/libkqueue/code/trunk@458 fb4e3144-bc1c-4b72-a658-5bcd248dd7f7
This commit is contained in:
mheily 2011-03-19 14:28:29 +00:00
parent c8762ecddb
commit 50bb5cb827
1 changed files with 7 additions and 1 deletions
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8
src/linux/signal.c
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@ -55,13 +55,19 @@ signalfd_add(int epfd, int sigfd, void *ptr)
static int
signalfd_create(int epfd, void *ptr, int signum)
{
static int flags = SFD_NONBLOCK;
sigset_t sigmask;
int sigfd;
/* Create a signalfd */
sigemptyset(&sigmask);
sigaddset(&sigmask, signum);
sigfd = signalfd(-1, &sigmask, SFD_NONBLOCK);
sigfd = signalfd(-1, &sigmask, flags);
/* WORKAROUND: Flags are broken on kernels older than Linux 2.6.27 */
if (sigfd < 0 && errno == EINVAL && flags != 0) {
flags = 0;
sigfd = signalfd(-1, &sigmask, flags);
}
if (sigfd < 0) {
dbg_perror("signalfd(2)");
goto errout;