Index: fusl/src/process/system.c |
diff --git a/fusl/src/process/system.c b/fusl/src/process/system.c |
new file mode 100644 |
index 0000000000000000000000000000000000000000..8cbdda060d0275c7fd6480b2be676b7c25945d3e |
--- /dev/null |
+++ b/fusl/src/process/system.c |
@@ -0,0 +1,47 @@ |
+#include <unistd.h> |
+#include <stdlib.h> |
+#include <signal.h> |
+#include <sys/wait.h> |
+#include <spawn.h> |
+#include <errno.h> |
+#include "pthread_impl.h" |
+#include "libc.h" |
+ |
+extern char **__environ; |
+ |
+int system(const char *cmd) |
+{ |
+ pid_t pid; |
+ sigset_t old, reset; |
+ struct sigaction sa = { .sa_handler = SIG_IGN }, oldint, oldquit; |
+ int status = 0x7f00, ret; |
+ posix_spawnattr_t attr; |
+ |
+ pthread_testcancel(); |
+ |
+ if (!cmd) return 1; |
+ |
+ sigaction(SIGINT, &sa, &oldint); |
+ sigaction(SIGQUIT, &sa, &oldquit); |
+ sigaddset(&sa.sa_mask, SIGCHLD); |
+ sigprocmask(SIG_BLOCK, &sa.sa_mask, &old); |
+ |
+ sigemptyset(&reset); |
+ if (oldint.sa_handler != SIG_IGN) sigaddset(&reset, SIGINT); |
+ if (oldquit.sa_handler != SIG_IGN) sigaddset(&reset, SIGQUIT); |
+ posix_spawnattr_init(&attr); |
+ posix_spawnattr_setsigmask(&attr, &old); |
+ posix_spawnattr_setsigdefault(&attr, &reset); |
+ posix_spawnattr_setflags(&attr, POSIX_SPAWN_SETSIGDEF|POSIX_SPAWN_SETSIGMASK); |
+ ret = posix_spawn(&pid, "/bin/sh", 0, &attr, |
+ (char *[]){"sh", "-c", (char *)cmd, 0}, __environ); |
+ posix_spawnattr_destroy(&attr); |
+ |
+ if (!ret) while (waitpid(pid, &status, 0)<0 && errno == EINTR); |
+ sigaction(SIGINT, &oldint, NULL); |
+ sigaction(SIGQUIT, &oldquit, NULL); |
+ sigprocmask(SIG_SETMASK, &old, NULL); |
+ |
+ if (ret) errno = ret; |
+ return status; |
+} |