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 | ed90bda | 2008-06-28 01:18:09 +0000 | [diff] [blame] | 24 | /* coreutils implements: |
| 25 | * -a change only the access time |
| 26 | * -c, --no-create |
| 27 | * do not create any files |
| 28 | * -d, --date=STRING |
| 29 | * parse STRING and use it instead of current time |
| 30 | * -f (ignored, BSD compat) |
| 31 | * -m change only the modification time |
| 32 | * -r, --reference=FILE |
| 33 | * use this file's times instead of current time |
| 34 | * -t STAMP |
| 35 | * use [[CC]YY]MMDDhhmm[.ss] instead of current time |
| 36 | * --time=WORD |
| 37 | * change the specified time: WORD is access, atime, or use |
| 38 | */ |
| 39 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 40 | int touch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 41 | int touch_main(int argc UNUSED_PARAM, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 42 | { |
Denis Vlasenko | ed90bda | 2008-06-28 01:18:09 +0000 | [diff] [blame] | 43 | #if ENABLE_DESKTOP |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 44 | # if ENABLE_LONG_OPTS |
| 45 | static const char touch_longopts[] ALIGN1 = |
Denis Vlasenko | 7241e6d | 2009-03-15 01:28:30 +0000 | [diff] [blame] | 46 | /* name, has_arg, val */ |
| 47 | "no-create\0" No_argument "c" |
| 48 | "reference\0" Required_argument "r" |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 49 | "date\0" Required_argument "d" |
Denis Vlasenko | 7241e6d | 2009-03-15 01:28:30 +0000 | [diff] [blame] | 50 | ; |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 51 | # endif |
Denis Vlasenko | ed90bda | 2008-06-28 01:18:09 +0000 | [diff] [blame] | 52 | struct utimbuf timebuf; |
| 53 | char *reference_file = NULL; |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 54 | char *date_str = NULL; |
Denis Vlasenko | ed90bda | 2008-06-28 01:18:09 +0000 | [diff] [blame] | 55 | #else |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 56 | # define reference_file NULL |
| 57 | # define date_str NULL |
| 58 | # define timebuf (*(struct utimbuf*)NULL) |
Denis Vlasenko | ed90bda | 2008-06-28 01:18:09 +0000 | [diff] [blame] | 59 | #endif |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 60 | int fd; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 61 | int status = EXIT_SUCCESS; |
Denis Vlasenko | 7241e6d | 2009-03-15 01:28:30 +0000 | [diff] [blame] | 62 | int opts; |
| 63 | |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 64 | #if ENABLE_DESKTOP && ENABLE_LONG_OPTS |
| 65 | applet_long_options = touch_longopts; |
Denis Vlasenko | 7241e6d | 2009-03-15 01:28:30 +0000 | [diff] [blame] | 66 | #endif |
Denys Vlasenko | 38dd8aa | 2009-07-18 04:49:20 +0200 | [diff] [blame] | 67 | /* -d and -t both set time. In coreutils, |
| 68 | * accepted data format differs a bit between -d and -t. |
| 69 | * We accept the same formats for both */ |
| 70 | opts = getopt32(argv, "c" IF_DESKTOP("r:d:t:") |
Denis Vlasenko | ed90bda | 2008-06-28 01:18:09 +0000 | [diff] [blame] | 71 | /*ignored:*/ "fma" |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 72 | IF_DESKTOP(, &reference_file) |
| 73 | IF_DESKTOP(, &date_str) |
Denys Vlasenko | 38dd8aa | 2009-07-18 04:49:20 +0200 | [diff] [blame] | 74 | IF_DESKTOP(, &date_str) |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 75 | ); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 76 | |
Denis Vlasenko | 7241e6d | 2009-03-15 01:28:30 +0000 | [diff] [blame] | 77 | opts &= 1; /* only -c bit is left */ |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 78 | argv += optind; |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 79 | if (!*argv) { |
| 80 | bb_show_usage(); |
Eric Andersen | 5a0a2aa | 2000-06-02 23:26:44 +0000 | [diff] [blame] | 81 | } |
| 82 | |
Denis Vlasenko | ed90bda | 2008-06-28 01:18:09 +0000 | [diff] [blame] | 83 | if (reference_file) { |
| 84 | struct stat stbuf; |
| 85 | xstat(reference_file, &stbuf); |
| 86 | timebuf.actime = stbuf.st_atime; |
| 87 | timebuf.modtime = stbuf.st_mtime; |
| 88 | } |
| 89 | |
Denys Vlasenko | 7aca89a | 2009-07-18 03:41:29 +0200 | [diff] [blame] | 90 | if (date_str) { |
| 91 | struct tm tm_time; |
| 92 | time_t t; |
| 93 | |
| 94 | //time(&t); |
| 95 | //localtime_r(&t, &tm_time); |
| 96 | memset(&tm_time, 0, sizeof(tm_time)); |
| 97 | parse_datestr(date_str, &tm_time); |
| 98 | |
| 99 | /* Correct any day of week and day of year etc. fields */ |
| 100 | tm_time.tm_isdst = -1; /* Be sure to recheck dst */ |
| 101 | t = validate_tm_time(date_str, &tm_time); |
| 102 | |
| 103 | timebuf.actime = t; |
| 104 | timebuf.modtime = t; |
| 105 | } |
| 106 | |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 107 | do { |
Denis Vlasenko | ed90bda | 2008-06-28 01:18:09 +0000 | [diff] [blame] | 108 | if (utime(*argv, reference_file ? &timebuf : NULL)) { |
| 109 | if (errno == ENOENT) { /* no such file */ |
Denis Vlasenko | 7241e6d | 2009-03-15 01:28:30 +0000 | [diff] [blame] | 110 | if (opts) { /* creation is disabled, so ignore */ |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 111 | continue; |
| 112 | } |
| 113 | /* Try to create the file. */ |
| 114 | fd = open(*argv, O_RDWR | O_CREAT, |
| 115 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH |
| 116 | ); |
| 117 | if ((fd >= 0) && !close(fd)) { |
Denis Vlasenko | ed90bda | 2008-06-28 01:18:09 +0000 | [diff] [blame] | 118 | if (reference_file) |
| 119 | utime(*argv, &timebuf); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 120 | continue; |
| 121 | } |
| 122 | } |
| 123 | status = EXIT_FAILURE; |
Denis Vlasenko | 0c97c9d | 2007-10-01 11:58:38 +0000 | [diff] [blame] | 124 | bb_simple_perror_msg(*argv); |
Eric Andersen | 5a0a2aa | 2000-06-02 23:26:44 +0000 | [diff] [blame] | 125 | } |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 126 | } while (*++argv); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 127 | |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 128 | return status; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 129 | } |