diff options
Diffstat (limited to 'coreutils')
| -rw-r--r-- | coreutils/touch.c | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/coreutils/touch.c b/coreutils/touch.c index 0b58179..78ae4a5 100644 --- a/coreutils/touch.c +++ b/coreutils/touch.c @@ -21,24 +21,55 @@ /* This is a NOFORK applet. Be very careful! */ +/* coreutils implements: + * -a change only the access time + * -c, --no-create + * do not create any files + * -d, --date=STRING + * parse STRING and use it instead of current time + * -f (ignored, BSD compat) + * -m change only the modification time + * -r, --reference=FILE + * use this file's times instead of current time + * -t STAMP + * use [[CC]YY]MMDDhhmm[.ss] instead of current time + * --time=WORD + * change the specified time: WORD is access, atime, or use + */ + int touch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int touch_main(int argc ATTRIBUTE_UNUSED, char **argv) { +#if ENABLE_DESKTOP + struct utimbuf timebuf; + char *reference_file = NULL; +#else +#define reference_file NULL +#define timebuf (*(struct utimbuf*)NULL) +#endif int fd; int status = EXIT_SUCCESS; - int flags = getopt32(argv, "cf"); + int flags = getopt32(argv, "c" USE_DESKTOP("r:") + /*ignored:*/ "fma" + USE_DESKTOP(, &reference_file)); - flags &= 1; /* ignoring -f (BSD compat thingy) */ + flags &= 1; /* only -c bit is left */ argv += optind; - if (!*argv) { bb_show_usage(); } + if (reference_file) { + struct stat stbuf; + xstat(reference_file, &stbuf); + timebuf.actime = stbuf.st_atime; + timebuf.modtime = stbuf.st_mtime; + } + do { - if (utime(*argv, NULL)) { - if (errno == ENOENT) { /* no such file */ - if (flags) { /* Creation is disabled, so ignore. */ + if (utime(*argv, reference_file ? &timebuf : NULL)) { + if (errno == ENOENT) { /* no such file */ + if (flags) { /* creation is disabled, so ignore */ continue; } /* Try to create the file. */ @@ -46,6 +77,8 @@ int touch_main(int argc ATTRIBUTE_UNUSED, char **argv) S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH ); if ((fd >= 0) && !close(fd)) { + if (reference_file) + utime(*argv, &timebuf); continue; } } |