diff options
Diffstat (limited to 'package/toolbox/src/src/touch.c')
-rw-r--r-- | package/toolbox/src/src/touch.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/package/toolbox/src/src/touch.c b/package/toolbox/src/src/touch.c new file mode 100644 index 000000000..7c38aa05a --- /dev/null +++ b/package/toolbox/src/src/touch.c @@ -0,0 +1,115 @@ +#include <stdio.h> +#include <string.h> +#include <sys/types.h> +#include <fcntl.h> +#include <sys/stat.h> +#include <stdlib.h> +#include <fcntl.h> +#include <time.h> +#include <unistd.h> + +static void usage(void) +{ + fprintf(stderr, "touch: usage: touch [-alm] [-t YYYYMMDD[.hhmmss]] <file>\n"); + exit(1); +} + +static time_t parse_time(char *s) +{ + struct tm tm; + int day = atoi(s); + int hour = 0; + + while (*s && *s != '.') { + s++; + } + + if (*s) { + s++; + hour = atoi(s); + } + + tm.tm_year = day / 10000 - 1900; + tm.tm_mon = (day % 10000) / 100 - 1; + tm.tm_mday = day % 100; + tm.tm_hour = hour / 10000; + tm.tm_min = (hour % 10000) / 100; + tm.tm_sec = hour % 100; + tm.tm_isdst = -1; + + return mktime(&tm); +} + +int main(int argc, char *argv[]) +{ + int i, fd, aflag = 0, mflag = 0, debug = 0, flags = 0; + struct timespec specified_time, times[2]; + char *file = 0; + + specified_time.tv_nsec = UTIME_NOW; + + for (i = 1; i < argc; i++) { + if (argv[i][0] == '-') { + /* an option */ + const char *arg = argv[i]+1; + while (arg[0]) { + switch (arg[0]) { + case 'a': aflag = 1; break; + case 'm': mflag = 1; break; + case 't': + if ((i+1) >= argc) + usage(); + specified_time.tv_sec = parse_time(argv[++i]); + if (specified_time.tv_sec == -1) { + fprintf(stderr, "touch: invalid timestamp specified\n"); + exit(1); + } + specified_time.tv_nsec = 0; + break; + case 'l': flags |= AT_SYMLINK_NOFOLLOW; break; + case 'd': debug = 1; break; + default: + usage(); + } + arg++; + } + } else { + /* not an option, and only accept one filename */ + if (i+1 != argc) + usage(); + file = argv[i]; + } + } + + if (! file) { + fprintf(stderr, "touch: no file specified\n"); + exit(1); + } + + if (access(file, F_OK)) + if ((fd=creat(file, 0666)) != -1) + close(fd); + + if ((mflag == 0) && (aflag == 0)) + aflag = mflag = 1; + + if (aflag) + times[0] = specified_time; + else + times[0].tv_nsec = UTIME_OMIT; + + if (mflag) + times[1] = specified_time; + else + times[1].tv_nsec = UTIME_OMIT; + + if (debug) { + fprintf(stderr, "file = %s\n", file); + fprintf(stderr, "times[0].tv_sec = %lld, times[0].tv_nsec = %ld\n", (long long)times[0].tv_sec, (long)times[0].tv_nsec); + fprintf(stderr, "times[1].tv_sec = %lld, times[1].tv_nsec = %ld\n", (long long)times[1].tv_sec, (long)times[1].tv_nsec); + fprintf(stderr, "flags = 0x%8.8x\n", flags); + } + + return utimensat(AT_FDCWD, file, times, flags); +} + |