mirror of
https://github.com/fluencelabs/musl
synced 2025-06-06 11:31:35 +00:00
46 lines
923 B
C
46 lines
923 B
C
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#include <unistd.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/wait.h>
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#include <errno.h>
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int system(const char *cmd)
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{
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pid_t pid;
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sigset_t old, new;
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struct sigaction sa, oldint, oldquit;
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int status;
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if (!cmd) return 1;
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sa.sa_handler = SIG_IGN;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = 0;
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sigaction(SIGINT, &sa, &oldint);
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sigaction(SIGQUIT, &sa, &oldquit);
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sigaddset(&sa.sa_mask, SIGCHLD);
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sigprocmask(SIG_BLOCK, &new, &old);
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pid = fork();
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if (pid <= 0) {
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sigaction(SIGINT, &oldint, NULL);
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sigaction(SIGQUIT, &oldquit, NULL);
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sigprocmask(SIG_SETMASK, &old, NULL);
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if (pid == 0) {
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execl("/bin/sh", "sh", "-c", cmd, (char *)0);
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_exit(127);
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}
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return -1;
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}
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while (waitpid(pid, &status, 0) == -1)
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if (errno != EINTR) {
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status = -1;
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break;
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}
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sigaction(SIGINT, &oldint, NULL);
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sigaction(SIGQUIT, &oldquit, NULL);
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sigprocmask(SIG_SETMASK, &old, NULL);
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return status;
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}
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