1 files changed, 91 insertions, 0 deletions
diff --git a/coreutils/touch.c b/coreutils/touch.c
new file mode 100644
index 0000000..92f2023
--- /dev/null
+++ b/coreutils/touch.c
@@ -0,0 +1,91 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini touch implementation for busybox
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* BB_AUDIT SUSv3 _NOT_ compliant -- options -a, -m, -r, -t not supported. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/touch.html */
+
+/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
+ *
+ * Previous version called open() and then utime().  While this will be
+ * be necessary to implement -r and -t, it currently only makes things bigger.
+ * Also, exiting on a failure was a bug.  All args should be processed.
+ */
+
+#include "libbb.h"
+
+/* 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 UNUSED_PARAM, 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, "c" USE_DESKTOP("r:")
+				/*ignored:*/ "fma"
+				USE_DESKTOP(, &reference_file));
+
+	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, reference_file ? &timebuf : NULL)) {
+			if (errno == ENOENT) { /* no such file */
+				if (flags) { /* creation is disabled, so ignore */
+					continue;
+				}
+				/* Try to create the file. */
+				fd = open(*argv, O_RDWR | O_CREAT,
+						  S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
+						  );
+				if ((fd >= 0) && !close(fd)) {
+					if (reference_file)
+						utime(*argv, &timebuf);
+					continue;
+				}
+			}
+			status = EXIT_FAILURE;
+			bb_simple_perror_msg(*argv);
+		}
+	} while (*++argv);
+
+	return status;
+}