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Handle EINTR from write(2) when writing to pipes and socket pairs.

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This commit is contained in:
Todd C. Miller
2014-05-27 10:16:49 -06:00
parent 9e5a68627f
commit d628e17ead
3 changed files with 28 additions and 7 deletions
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15
src/exec.c
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@@ -877,7 +877,10 @@ handler(int s, siginfo_t *info, void *context)
* The pipe is non-blocking, if we overflow the kernel's pipe
* buffer we drop the signal. This is not a problem in practice.
*/
ignore_result(write(signal_pipe[1], &signo, sizeof(signo)));
while (write(signal_pipe[1], &signo, sizeof(signo)) == -1) {
if (errno != EINTR)
break;
}
}
#else
void
@@ -889,7 +892,10 @@ handler(int s)
* The pipe is non-blocking, if we overflow the kernel's pipe
* buffer we drop the signal. This is not a problem in practice.
*/
ignore_result(write(signal_pipe[1], &signo, sizeof(signo)));
while (write(signal_pipe[1], &signo, sizeof(signo)) == -1) {
if (errno != EINTR)
break;
}
}
#endif
@@ -911,7 +917,10 @@ handler_user_only(int s, siginfo_t *info, void *context)
* The pipe is non-blocking, if we overflow the kernel's pipe
* buffer we drop the signal. This is not a problem in practice.
*/
ignore_result(write(signal_pipe[1], &signo, sizeof(signo)));
while (write(signal_pipe[1], &signo, sizeof(signo)) == -1) {
if (errno != EINTR)
break;
}
}
}
#endif /* SA_SIGINFO */