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d2824f5294
This reverts commit 9016d288f1.
Tools that have no options are required by POSIX to support "--" so
that conforming applications have a way to shield their operands from
implementations that provide options as an extension.
echo(1) is just an exception, so it is handled specially.
See OPTIONS in https://pubs.opengroup.org/onlinepubs/9699919799.2018edition/utilities/V3_chap01.html#tag_17_04
50 lines
752 B
C
50 lines
752 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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ARGBEGIN {
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default:
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usage();
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} ARGEND
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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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