| 1 | /* |
| 2 | * This program can either change modification time of the given |
| 3 | * file(s) or just print it. The program does not change atime or |
| 4 | * ctime (their values are explicitly preserved). |
| 5 | * |
| 6 | * The mtime can be changed to an absolute value: |
| 7 | * |
| 8 | * test-tool chmtime =<seconds> file... |
| 9 | * |
| 10 | * Relative to the current time as returned by time(3): |
| 11 | * |
| 12 | * test-tool chmtime =+<seconds> (or =-<seconds>) file... |
| 13 | * |
| 14 | * Or relative to the current mtime of the file: |
| 15 | * |
| 16 | * test-tool chmtime <seconds> file... |
| 17 | * test-tool chmtime +<seconds> (or -<seconds>) file... |
| 18 | * |
| 19 | * Examples: |
| 20 | * |
| 21 | * To print the mtime and the file name use --verbose and set |
| 22 | * the file mtime offset to 0: |
| 23 | * |
| 24 | * test-tool chmtime -v +0 file |
| 25 | * |
| 26 | * To print only the mtime use --get: |
| 27 | * |
| 28 | * test-tool chmtime --get file |
| 29 | * |
| 30 | * To set the mtime to current time: |
| 31 | * |
| 32 | * test-tool chmtime =+0 file |
| 33 | * |
| 34 | * To set the file mtime offset to +1 and print the new value: |
| 35 | * |
| 36 | * test-tool chmtime --get +1 file |
| 37 | * |
| 38 | */ |
| 39 | #include "test-tool.h" |
| 40 | #include "git-compat-util.h" |
| 41 | #include <utime.h> |
| 42 | |
| 43 | static const char usage_str[] = |
| 44 | "(-v|--verbose|-g|--get) (+|=|=+|=-|-)<seconds> <file>..."; |
| 45 | |
| 46 | static int timespec_arg(const char *arg, long int *set_time, int *set_eq) |
| 47 | { |
| 48 | char *test; |
| 49 | const char *timespec = arg; |
| 50 | *set_eq = (*timespec == '=') ? 1 : 0; |
| 51 | if (*set_eq) { |
| 52 | timespec++; |
| 53 | if (*timespec == '+') { |
| 54 | *set_eq = 2; /* relative "in the future" */ |
| 55 | timespec++; |
| 56 | } |
| 57 | } |
| 58 | *set_time = strtol(timespec, &test, 10); |
| 59 | if (*test) { |
| 60 | return 0; |
| 61 | } |
| 62 | if ((*set_eq && *set_time < 0) || *set_eq == 2) { |
| 63 | time_t now = time(NULL); |
| 64 | *set_time += now; |
| 65 | } |
| 66 | return 1; |
| 67 | } |
| 68 | |
| 69 | int cmd__chmtime(int argc, const char **argv) |
| 70 | { |
| 71 | static int verbose; |
| 72 | static int get; |
| 73 | |
| 74 | int i = 1; |
| 75 | /* no mtime change by default */ |
| 76 | int set_eq = 0; |
| 77 | long int set_time = 0; |
| 78 | |
| 79 | if (argc < 3) |
| 80 | goto usage; |
| 81 | |
| 82 | if (strcmp(argv[i], "--get") == 0 || strcmp(argv[i], "-g") == 0) { |
| 83 | get = 1; |
| 84 | ++i; |
| 85 | } else if (strcmp(argv[i], "--verbose") == 0 || strcmp(argv[i], "-v") == 0) { |
| 86 | verbose = 1; |
| 87 | ++i; |
| 88 | } |
| 89 | |
| 90 | if (i == argc) { |
| 91 | goto usage; |
| 92 | } |
| 93 | |
| 94 | if (timespec_arg(argv[i], &set_time, &set_eq)) { |
| 95 | ++i; |
| 96 | } else { |
| 97 | if (get == 0 && verbose == 0) { |
| 98 | fprintf(stderr, "Not a base-10 integer: %s\n", argv[i] + 1); |
| 99 | goto usage; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | if (i == argc) |
| 104 | goto usage; |
| 105 | |
| 106 | for (; i < argc; i++) { |
| 107 | struct stat sb; |
| 108 | struct utimbuf utb; |
| 109 | uintmax_t mtime; |
| 110 | |
| 111 | if (stat(argv[i], &sb) < 0) { |
| 112 | fprintf(stderr, "Failed to stat %s: %s. Skipping\n", |
| 113 | argv[i], strerror(errno)); |
| 114 | continue; |
| 115 | } |
| 116 | |
| 117 | #ifdef GIT_WINDOWS_NATIVE |
| 118 | if (!(sb.st_mode & S_IWUSR) && |
| 119 | chmod(argv[i], sb.st_mode | S_IWUSR)) { |
| 120 | fprintf(stderr, "Could not make user-writable %s: %s", |
| 121 | argv[i], strerror(errno)); |
| 122 | return 1; |
| 123 | } |
| 124 | #endif |
| 125 | |
| 126 | utb.actime = sb.st_atime; |
| 127 | utb.modtime = set_eq ? set_time : sb.st_mtime + set_time; |
| 128 | |
| 129 | mtime = utb.modtime < 0 ? 0: utb.modtime; |
| 130 | if (get) { |
| 131 | printf("%"PRIuMAX"\n", mtime); |
| 132 | } else if (verbose) { |
| 133 | printf("%"PRIuMAX"\t%s\n", mtime, argv[i]); |
| 134 | } |
| 135 | |
| 136 | if (utb.modtime != sb.st_mtime && utime(argv[i], &utb) < 0) { |
| 137 | #ifdef GIT_WINDOWS_NATIVE |
| 138 | if (S_ISDIR(sb.st_mode)) { |
| 139 | /* |
| 140 | * NEEDSWORK: The Windows version of `utime()` |
| 141 | * (aka `mingw_utime()`) does not correctly |
| 142 | * handle directory arguments, since it uses |
| 143 | * `_wopen()`. Ignore it for now since this |
| 144 | * is just a test. |
| 145 | */ |
| 146 | fprintf(stderr, |
| 147 | ("Failed to modify time on directory %s. " |
| 148 | "Skipping\n"), argv[i]); |
| 149 | continue; |
| 150 | } |
| 151 | #endif |
| 152 | fprintf(stderr, "Failed to modify time on %s: %s\n", |
| 153 | argv[i], strerror(errno)); |
| 154 | return 1; |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | return 0; |
| 159 | |
| 160 | usage: |
| 161 | fprintf(stderr, "usage: %s %s\n", argv[0], usage_str); |
| 162 | return 1; |
| 163 | } |