git.saurik.com Git - apple/xnu.git/blame_incremental

... / ...

Commit	Line	Data
	1	/*
	2	* Copyright (c) 2012 Apple, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. Please obtain a copy of the License at
	10	* http://www.opensource.apple.com/apsl/ and read it before using this
	11	* file.
	12	*
	13	* The Original Code and all software distributed under the License are
	14	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	15	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	16	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	18	* Please see the License for the specific language governing rights and
	19	* limitations under the License.
	20	*
	21	* @APPLE_LICENSE_HEADER_END@
	22	*/
	23
	24	#include <stdio.h>
	25	#include <stdlib.h>
	26	#include <unistd.h>
	27	#include <stdbool.h>
	28	#include <errno.h>
	29	#include <err.h>
	30	#include <sysexits.h>
	31
	32	#include <sys/stat.h>
	33	#include <sys/fcntl.h>
	34	#include <sys/param.h>
	35	#include <sys/time.h>
	36
	37	#include <copyfile.h>
	38
	39	void usage(void);
	40
	41	int
	42	main(int argc, char * argv[])
	43	{
	44	struct stat sb;
	45	void *mset;
	46	mode_t mode;
	47	bool gotmode = false;
	48	int ch;
	49	int ret;
	50	int srcfd, dstfd;
	51	const char *src = NULL;
	52	const char *dst = NULL;
	53	char dsttmpname[MAXPATHLEN];
	54
	55	while ((ch = getopt(argc, argv, "cSm:")) != -1) {
	56	switch (ch) {
	57	case 'c':
	58	case 'S':
	59	/* ignored for compatibility */
	60	break;
	61	case 'm':
	62	gotmode = true;
	63	mset = setmode(optarg);
	64	if (!mset) {
	65	errx(EX_USAGE, "Unrecognized mode %s", optarg);
	66	}
	67
	68	mode = getmode(mset, 0);
	69	free(mset);
	70	break;
	71	case '?':
	72	default:
	73	usage();
	74	}
	75	}
	76
	77	argc -= optind;
	78	argv += optind;
	79
	80	if (argc < 2) {
	81	usage();
	82	}
	83
	84	src = argv[0];
	85	dst = argv[1];
	86
	87	srcfd = open(src, O_RDONLY \| O_SYMLINK, 0);
	88	if (srcfd < 0) {
	89	err(EX_NOINPUT, "open(%s)", src);
	90	}
	91
	92	ret = fstat(srcfd, &sb);
	93	if (ret < 0) {
	94	err(EX_NOINPUT, "fstat(%s)", src);
	95	}
	96
	97	if (!S_ISREG(sb.st_mode)) {
	98	err(EX_USAGE, "%s is not a regular file", src);
	99	}
	100
	101	snprintf(dsttmpname, sizeof(dsttmpname), "%s.XXXXXX", dst);
	102
	103	dstfd = mkstemp(dsttmpname);
	104	if (dstfd < 0) {
	105	err(EX_UNAVAILABLE, "mkstemp(%s)", dsttmpname);
	106	}
	107
	108	ret = fcopyfile(srcfd, dstfd, NULL,
	109	COPYFILE_DATA);
	110	if (ret < 0) {
	111	err(EX_UNAVAILABLE, "fcopyfile(%s, %s)", src, dsttmpname);
	112	}
	113
	114	ret = futimes(dstfd, NULL);
	115	if (ret < 0) {
	116	err(EX_UNAVAILABLE, "futimes(%s)", dsttmpname);
	117	}
	118
	119	if (gotmode) {
	120	ret = fchmod(dstfd, mode);
	121	if (ret < 0) {
	122	err(EX_NOINPUT, "fchmod(%s, %ho)", dsttmpname, mode);
	123	}
	124	}
	125
	126	ret = rename(dsttmpname, dst);
	127	if (ret < 0) {
	128	err(EX_NOINPUT, "rename(%s, %s)", dsttmpname, dst);
	129	}
	130
	131	ret = close(dstfd);
	132	if (ret < 0) {
	133	err(EX_NOINPUT, "close(dst)");
	134	}
	135
	136	ret = close(srcfd);
	137	if (ret < 0) {
	138	err(EX_NOINPUT, "close(src)");
	139	}
	140
	141	return 0;
	142	}
	143
	144	void
	145	usage(void)
	146	{
	147	fprintf(stderr, "Usage: %s [-c] [-S] [-m <mode>] <src> <dst>\n",
	148	getprogname());
	149	exit(EX_USAGE);
	150	}