| /* |
| * This program can either change modification time of the given |
| * file(s) or just print it. The program does not change atime nor |
| * ctime (their values are explicitly preserved). |
| * |
| * The mtime can be changed to an absolute value: |
| * |
| * test-chmtime =<seconds> file... |
| * |
| * Relative to the current time as returned by time(3): |
| * |
| * test-chmtime =+<seconds> (or =-<seconds>) file... |
| * |
| * Or relative to the current mtime of the file: |
| * |
| * test-chmtime <seconds> file... |
| * test-chmtime +<seconds> (or -<seconds>) file... |
| * |
| * Examples: |
| * |
| * To just print the mtime use --verbose and set the file mtime offset to 0: |
| * |
| * test-chmtime -v +0 file |
| * |
| * To set the mtime to current time: |
| * |
| * test-chmtime =+0 file |
| * |
| */ |
| #include "git-compat-util.h" |
| #include <utime.h> |
| |
| static const char usage_str[] = "-v|--verbose (+|=|=+|=-|-)<seconds> <file>..."; |
| |
| static int timespec_arg(const char *arg, long int *set_time, int *set_eq) |
| { |
| char *test; |
| const char *timespec = arg; |
| *set_eq = (*timespec == '=') ? 1 : 0; |
| if (*set_eq) { |
| timespec++; |
| if (*timespec == '+') { |
| *set_eq = 2; /* relative "in the future" */ |
| timespec++; |
| } |
| } |
| *set_time = strtol(timespec, &test, 10); |
| if (*test) { |
| fprintf(stderr, "Not a base-10 integer: %s\n", arg + 1); |
| return 0; |
| } |
| if ((*set_eq && *set_time < 0) || *set_eq == 2) { |
| time_t now = time(NULL); |
| *set_time += now; |
| } |
| return 1; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| static int verbose; |
| |
| int i = 1; |
| /* no mtime change by default */ |
| int set_eq = 0; |
| long int set_time = 0; |
| |
| if (argc < 3) |
| goto usage; |
| |
| if (strcmp(argv[i], "--verbose") == 0 || strcmp(argv[i], "-v") == 0) { |
| verbose = 1; |
| ++i; |
| } |
| if (timespec_arg(argv[i], &set_time, &set_eq)) |
| ++i; |
| else |
| goto usage; |
| |
| for (; i < argc; i++) { |
| struct stat sb; |
| struct utimbuf utb; |
| |
| if (stat(argv[i], &sb) < 0) { |
| fprintf(stderr, "Failed to stat %s: %s\n", |
| argv[i], strerror(errno)); |
| return 1; |
| } |
| |
| #ifdef GIT_WINDOWS_NATIVE |
| if (!(sb.st_mode & S_IWUSR) && |
| chmod(argv[i], sb.st_mode | S_IWUSR)) { |
| fprintf(stderr, "Could not make user-writable %s: %s", |
| argv[i], strerror(errno)); |
| return 1; |
| } |
| #endif |
| |
| utb.actime = sb.st_atime; |
| utb.modtime = set_eq ? set_time : sb.st_mtime + set_time; |
| |
| if (verbose) { |
| uintmax_t mtime = utb.modtime < 0 ? 0: utb.modtime; |
| printf("%"PRIuMAX"\t%s\n", mtime, argv[i]); |
| } |
| |
| if (utb.modtime != sb.st_mtime && utime(argv[i], &utb) < 0) { |
| fprintf(stderr, "Failed to modify time on %s: %s\n", |
| argv[i], strerror(errno)); |
| return 1; |
| } |
| } |
| |
| return 0; |
| |
| usage: |
| fprintf(stderr, "usage: %s %s\n", argv[0], usage_str); |
| return 1; |
| } |