54 lines
964 B
C
54 lines
964 B
C
/* See LICENSE file for copyright and license details. */
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#include <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <unistd.h>
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#include "util.h"
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enum { Error = 127, Found = 126 };
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static void
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usage(void)
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{
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eprintf("usage: %s cmd [arg ...]\n", argv0);
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}
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int
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main(int argc, char *argv[])
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{
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int fd;
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ARGBEGIN {
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default:
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usage();
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} ARGEND;
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if (argc == 0)
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usage();
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if (signal(SIGHUP, SIG_IGN) == SIG_ERR)
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enprintf(Error, "signal HUP:");
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if (isatty(STDOUT_FILENO)) {
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if ((fd = open("nohup.out", O_APPEND|O_CREAT,
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S_IRUSR|S_IWUSR)) < 0) {
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enprintf(Error, "open nohup.out:");
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}
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if (dup2(fd, STDOUT_FILENO) < 0)
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enprintf(Error, "dup2:");
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close(fd);
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}
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if (isatty(STDERR_FILENO))
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if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0)
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enprintf(Error, "dup2:");
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execvp(argv[0], &argv[0]);
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enprintf(errno == ENOENT ? Error : Found, "exec %s:", argv[0]);
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_exit(Error);
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/* unreachable */
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return 0;
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}
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