Last change
on this file since 2776 was 2725, checked in by Bruno Cornec, 13 years ago |
- Update mindi-busybox to 1.18.3 to avoid problems with the tar command which is now failing on recent versions with busybox 1.7.3
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File size:
1.2 KB
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Rev | Line | |
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[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * tty implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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| 6 | *
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[2725] | 7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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[821] | 8 | */
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| 9 |
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[2725] | 10 | /* BB_AUDIT SUSv4 compliant */
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| 11 | /* http://www.opengroup.org/onlinepubs/9699919799/utilities/tty.html */
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[821] | 12 |
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[1765] | 13 | #include "libbb.h"
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[821] | 14 |
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[2725] | 15 | int tty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 16 | int tty_main(int argc UNUSED_PARAM, char **argv)
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[821] | 17 | {
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| 18 | const char *s;
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[2725] | 19 | IF_INCLUDE_SUSv2(int silent;) /* Note: No longer relevant in SUSv3. */
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[821] | 20 | int retval;
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| 21 |
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[2725] | 22 | xfunc_error_retval = 2; /* SUSv3 requires > 1 for error. */
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[821] | 23 |
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[2725] | 24 | IF_INCLUDE_SUSv2(silent = getopt32(argv, "s");)
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| 25 | IF_INCLUDE_SUSv2(argv += optind;)
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| 26 | IF_NOT_INCLUDE_SUSv2(argv += 1;)
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[821] | 27 |
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| 28 | /* gnu tty outputs a warning that it is ignoring all args. */
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[2725] | 29 | bb_warn_ignoring_args(argv[0]);
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[821] | 30 |
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[2725] | 31 | retval = EXIT_SUCCESS;
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[821] | 32 |
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[2725] | 33 | s = xmalloc_ttyname(STDIN_FILENO);
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[1765] | 34 | if (s == NULL) {
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[2725] | 35 | /* According to SUSv3, ttyname can fail with EBADF or ENOTTY.
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[821] | 36 | * We know the file descriptor is good, so failure means not a tty. */
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| 37 | s = "not a tty";
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[2725] | 38 | retval = EXIT_FAILURE;
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[821] | 39 | }
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[2725] | 40 | IF_INCLUDE_SUSv2(if (!silent) puts(s);)
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| 41 | IF_NOT_INCLUDE_SUSv2(puts(s);)
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[821] | 42 |
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[1765] | 43 | fflush_stdout_and_exit(retval);
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[821] | 44 | }
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