47 lines
763 B
C
47 lines
763 B
C
/* See LICENSE file for copyright and license details. */
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "util.h"
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static void
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usage(void)
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{
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eprintf("usage: %s dir [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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char *shell[] = { "/bin/sh", "-i", NULL }, *aux, *cmd;
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int savederrno;
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argv0 = *argv, argv0 ? (argc--, argv++) : (void *)0;
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if (!argc)
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usage();
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if ((aux = getenv("SHELL")))
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shell[0] = aux;
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if (chroot(argv[0]) < 0)
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eprintf("chroot %s:", argv[0]);
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if (chdir("/") < 0)
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eprintf("chdir:");
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if (argc == 1) {
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cmd = *shell;
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execvp(cmd, shell);
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} else {
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cmd = argv[1];
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execvp(cmd, argv + 1);
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}
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savederrno = errno;
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weprintf("execvp %s:", cmd);
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_exit(126 + (savederrno == ENOENT));
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}
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