diff options
Diffstat (limited to 'src/3rdparty')
| -rw-r--r-- | src/3rdparty/forkfd/forkfd.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/src/3rdparty/forkfd/forkfd.c b/src/3rdparty/forkfd/forkfd.c index ad05ab1a01..7b711e197b 100644 --- a/src/3rdparty/forkfd/forkfd.c +++ b/src/3rdparty/forkfd/forkfd.c @@ -30,6 +30,9 @@ #include "forkfd.h" #include <sys/types.h> +#if defined(__OpenBSD__) || defined(__NetBSD__) +# include <sys/param.h> +#endif #include <sys/time.h> #include <sys/resource.h> #include <sys/wait.h> @@ -65,7 +68,9 @@ # undef HAVE_WAITID #endif -#if defined(__FreeBSD__) && defined(__FreeBSD_version) && __FreeBSD_version >= 1000032 +#if (defined(__FreeBSD__) && defined(__FreeBSD_version) && __FreeBSD_version >= 1000032) || \ + (defined(__OpenBSD__) && OpenBSD >= 201505) || \ + (defined(__NetBSD__) && __NetBSD_Version__ >= 600000000) # define HAVE_PIPE2 1 #endif #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__) || \ @@ -410,6 +415,26 @@ chain_handler: old_sigaction.sa_handler(signum); } +static void ignore_sigpipe() +{ +#ifdef O_NOSIGPIPE + static ffd_atomic_int done = FFD_ATOMIC_INIT(0); + if (ffd_atomic_load(&done, FFD_ATOMIC_RELAXED)) + return; +#endif + + struct sigaction action; + memset(&action, 0, sizeof action); + sigemptyset(&action.sa_mask); + action.sa_handler = SIG_IGN; + action.sa_flags = 0; + sigaction(SIGPIPE, &action, NULL); + +#ifdef O_NOSIGPIPE + ffd_atomic_store(&done, 1, FFD_ATOMIC_RELAXED); +#endif +} + static void forkfd_initialize() { #if defined(HAVE_BROKEN_WAITID) @@ -446,6 +471,11 @@ static void forkfd_initialize() */ sigaction(SIGCHLD, &action, &old_sigaction); +#ifndef O_NOSIGPIPE + /* disable SIGPIPE too */ + ignore_sigpipe(); +#endif + #ifndef __GNUC__ atexit(cleanup); #endif @@ -486,13 +516,23 @@ static void cleanup() static int create_pipe(int filedes[], int flags) { - int ret; + int ret = -1; #ifdef HAVE_PIPE2 /* use pipe2(2) whenever possible, since it can thread-safely create a * cloexec pair of pipes. Without it, we have a race condition setting * FD_CLOEXEC */ - ret = pipe2(filedes, O_CLOEXEC); + +# ifdef O_NOSIGPIPE + /* try first with O_NOSIGPIPE */ + ret = pipe2(filedes, O_CLOEXEC | O_NOSIGPIPE); + if (ret == -1) { + /* O_NOSIGPIPE not supported, ignore SIGPIPE */ + ignore_sigpipe(); + } +# endif + if (ret == -1) + ret = pipe2(filedes, O_CLOEXEC); if (ret == -1) return ret; |