Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Mini touch implementation for busybox |
| 4 | * |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 6 | * |
"Robert P. J. Day" | 801ab14 | 2006-07-12 07:56:04 +0000 | [diff] [blame] | 7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 8 | */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 9 | |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 10 | /* BB_AUDIT SUSv3 _NOT_ compliant -- options -a, -m, -r, -t not supported. */ |
| 11 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/touch.html */ |
| 12 | |
| 13 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) |
| 14 | * |
| 15 | * Previous version called open() and then utime(). While this will be |
| 16 | * be necessary to implement -r and -t, it currently only makes things bigger. |
| 17 | * Also, exiting on a failure was a bug. All args should be processed. |
| 18 | */ |
| 19 | |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 20 | #include "libbb.h" |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 21 | |
Denis Vlasenko | 3f3aa2a | 2007-04-09 21:35:07 +0000 | [diff] [blame] | 22 | /* This is a NOFORK applet. Be very careful! */ |
| 23 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 24 | int touch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | 68404f1 | 2008-03-17 09:00:54 +0000 | [diff] [blame^] | 25 | int touch_main(int argc ATTRIBUTE_UNUSED, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 26 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 27 | int fd; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 28 | int status = EXIT_SUCCESS; |
Denis Vlasenko | c253778 | 2007-11-28 19:25:32 +0000 | [diff] [blame] | 29 | int flags = getopt32(argv, "cf"); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 30 | |
Denis Vlasenko | c253778 | 2007-11-28 19:25:32 +0000 | [diff] [blame] | 31 | flags &= 1; /* ignoring -f (BSD compat thingy) */ |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 32 | argv += optind; |
| 33 | |
| 34 | if (!*argv) { |
| 35 | bb_show_usage(); |
Eric Andersen | 5a0a2aa | 2000-06-02 23:26:44 +0000 | [diff] [blame] | 36 | } |
| 37 | |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 38 | do { |
Eric Andersen | 5a0a2aa | 2000-06-02 23:26:44 +0000 | [diff] [blame] | 39 | if (utime(*argv, NULL)) { |
Denis Vlasenko | 3f3aa2a | 2007-04-09 21:35:07 +0000 | [diff] [blame] | 40 | if (errno == ENOENT) { /* no such file */ |
Bernhard Reutner-Fischer | d19f4aa | 2007-01-20 21:32:38 +0000 | [diff] [blame] | 41 | if (flags) { /* Creation is disabled, so ignore. */ |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 42 | continue; |
| 43 | } |
| 44 | /* Try to create the file. */ |
| 45 | fd = open(*argv, O_RDWR | O_CREAT, |
| 46 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH |
| 47 | ); |
| 48 | if ((fd >= 0) && !close(fd)) { |
| 49 | continue; |
| 50 | } |
| 51 | } |
| 52 | status = EXIT_FAILURE; |
Denis Vlasenko | 0c97c9d | 2007-10-01 11:58:38 +0000 | [diff] [blame] | 53 | bb_simple_perror_msg(*argv); |
Eric Andersen | 5a0a2aa | 2000-06-02 23:26:44 +0000 | [diff] [blame] | 54 | } |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 55 | } while (*++argv); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 56 | |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 57 | return status; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 58 | } |