[rsync/rsync.git] / backup.c

/*
 * Backup handling code.
 *
 * Copyright (C) 1999 Andrew Tridgell
 * Copyright (C) 2003-2008 Wayne Davison
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, visit the http://fsf.org website.
 */

#include "rsync.h"

extern int verbose;
extern int am_root;
extern int preserve_acls;
extern int preserve_xattrs;
extern int preserve_devices;
extern int preserve_specials;
extern int preserve_links;
extern int safe_symlinks;
extern int backup_dir_len;
extern unsigned int backup_dir_remainder;
extern char backup_dir_buf[MAXPATHLEN];
extern char *backup_suffix;
extern char *backup_dir;

/* make a complete pathname for backup file */
char *get_backup_name(const char *fname)
{
	if (backup_dir) {
		if (stringjoin(backup_dir_buf + backup_dir_len, backup_dir_remainder,
			       fname, backup_suffix, NULL) < backup_dir_remainder)
			return backup_dir_buf;
	} else {
		if (stringjoin(backup_dir_buf, MAXPATHLEN,
			       fname, backup_suffix, NULL) < MAXPATHLEN)
			return backup_dir_buf;
	}

	rprintf(FERROR, "backup filename too long\n");
	return NULL;
}

/* simple backup creates a backup with a suffix in the same directory */
static int make_simple_backup(const char *fname)
{
	int rename_errno;
	const char *fnamebak = get_backup_name(fname);

	if (!fnamebak)
		return 0;

	while (1) {
		if (do_rename(fname, fnamebak) == 0) {
			if (verbose > 1) {
				rprintf(FINFO, "backed up %s to %s\n",
					fname, fnamebak);
			}
			break;
		}
		/* cygwin (at least version b19) reports EINVAL */
		if (errno == ENOENT || errno == EINVAL)
			break;

		rename_errno = errno;
		if (errno == EISDIR && do_rmdir(fnamebak) == 0)
			continue;
		if (errno == ENOTDIR && do_unlink(fnamebak) == 0)
			continue;

		rsyserr(FERROR, rename_errno, "rename %s to backup %s",
			fname, fnamebak);
		errno = rename_errno;
		return 0;
	}

	return 1;
}


/****************************************************************************
Create a directory given an absolute path, perms based upon another directory
path
****************************************************************************/
int make_bak_dir(const char *fullpath)
{
	char fbuf[MAXPATHLEN], *rel, *end, *p;
	struct file_struct *file;
	int len = backup_dir_len;
	stat_x sx;

	while (*fullpath == '.' && fullpath[1] == '/') {
		fullpath += 2;
		len -= 2;
	}

	if (strlcpy(fbuf, fullpath, sizeof fbuf) >= sizeof fbuf)
		return -1;

	rel = fbuf + len;
	end = p = rel + strlen(rel);

	/* Try to find an existing dir, starting from the deepest dir. */
	while (1) {
		if (--p == fbuf)
			return -1;
		if (*p == '/') {
			*p = '\0';
			if (mkdir_defmode(fbuf) == 0)
				break;
			if (errno != ENOENT) {
				rsyserr(FERROR, errno,
					"make_bak_dir mkdir %s failed",
					full_fname(fbuf));
				return -1;
			}
		}
	}

	/* Make all the dirs that we didn't find on the way here. */
	while (1) {
		if (p >= rel) {
			/* Try to transfer the directory settings of the
			 * actual dir that the files are coming from. */
			if (x_stat(rel, &sx.st, NULL) < 0) {
				rsyserr(FERROR, errno,
					"make_bak_dir stat %s failed",
					full_fname(rel));
			} else {
#ifdef SUPPORT_ACLS
				sx.acc_acl = sx.def_acl = NULL;
#endif
#ifdef SUPPORT_XATTRS
				sx.xattr = NULL;
#endif
				if (!(file = make_file(rel, NULL, NULL, 0, NO_FILTERS)))
					continue;
#ifdef SUPPORT_ACLS
				if (preserve_acls && !S_ISLNK(file->mode)) {
					get_acl(rel, &sx);
					cache_acl(file, &sx);
					free_acl(&sx);
				}
#endif
#ifdef SUPPORT_XATTRS
				if (preserve_xattrs) {
					get_xattr(rel, &sx);
					cache_xattr(file, &sx);
					free_xattr(&sx);
				}
#endif
				set_file_attrs(fbuf, file, NULL, NULL, 0);
				unmake_file(file);
			}
		}
		*p = '/';
		p += strlen(p);
		if (p == end)
			break;
		if (mkdir_defmode(fbuf) < 0) {
			rsyserr(FERROR, errno, "make_bak_dir mkdir %s failed",
				full_fname(fbuf));
			return -1;
		}
	}

	return 0;
}

/* robustly move a file, creating new directory structures if necessary */
static int robust_move(const char *src, char *dst)
{
	if (robust_rename(src, dst, NULL, 0755) < 0) {
		int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
		if (errno == ENOENT && make_bak_dir(dst) == 0) {
			if (robust_rename(src, dst, NULL, 0755) < 0)
				save_errno = errno ? errno : save_errno;
			else
				save_errno = 0;
		}
		if (save_errno) {
			errno = save_errno;
			return -1;
		}
	}
	return 0;
}


/* If we have a --backup-dir, then we get here from make_backup().
 * We will move the file to be deleted into a parallel directory tree. */
static int keep_backup(const char *fname)
{
	stat_x sx;
	struct file_struct *file;
	char *buf;
	int save_preserve_xattrs = preserve_xattrs;
	int kept = 0;
	int ret_code;

	/* return if no file to keep */
	if (x_lstat(fname, &sx.st, NULL) < 0)
		return 1;
#ifdef SUPPORT_ACLS
	sx.acc_acl = sx.def_acl = NULL;
#endif
#ifdef SUPPORT_XATTRS
	sx.xattr = NULL;
#endif

	if (!(file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
		return 1; /* the file could have disappeared */

	if (!(buf = get_backup_name(fname))) {
		unmake_file(file);
		return 0;
	}

#ifdef SUPPORT_ACLS
	if (preserve_acls && !S_ISLNK(file->mode)) {
		get_acl(fname, &sx);
		cache_acl(file, &sx);
		free_acl(&sx);
	}
#endif
#ifdef SUPPORT_XATTRS
	if (preserve_xattrs) {
		get_xattr(fname, &sx);
		cache_xattr(file, &sx);
		free_xattr(&sx);
	}
#endif

	/* Check to see if this is a device file, or link */
	if ((am_root && preserve_devices && IS_DEVICE(file->mode))
	 || (preserve_specials && IS_SPECIAL(file->mode))) {
		uint32 *devp = F_RDEV_P(file);
		dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
		do_unlink(buf);
		if (do_mknod(buf, file->mode, rdev) < 0) {
			int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
			if (errno == ENOENT && make_bak_dir(buf) == 0) {
				if (do_mknod(buf, file->mode, rdev) < 0)
					save_errno = errno ? errno : save_errno;
				else
					save_errno = 0;
			}
			if (save_errno) {
				rsyserr(FERROR, save_errno, "mknod %s failed",
					full_fname(buf));
			}
		} else if (verbose > 2) {
			rprintf(FINFO, "make_backup: DEVICE %s successful.\n",
				fname);
		}
		kept = 1;
		do_unlink(fname);
	}

	if (!kept && S_ISDIR(file->mode)) {
		/* make an empty directory */
		if (do_mkdir(buf, file->mode) < 0) {
			int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
			if (errno == ENOENT && make_bak_dir(buf) == 0) {
				if (do_mkdir(buf, file->mode) < 0)
					save_errno = errno ? errno : save_errno;
				else
					save_errno = 0;
			}
			if (save_errno) {
				rsyserr(FINFO, save_errno, "mkdir %s failed",
					full_fname(buf));
			}
		}

		ret_code = do_rmdir(fname);
		if (verbose > 2) {
			rprintf(FINFO, "make_backup: RMDIR %s returns %i\n",
				full_fname(fname), ret_code);
		}
		kept = 1;
	}

#ifdef SUPPORT_LINKS
	if (!kept && preserve_links && S_ISLNK(file->mode)) {
		const char *sl = F_SYMLINK(file);
		if (safe_symlinks && unsafe_symlink(sl, buf)) {
			if (verbose) {
				rprintf(FINFO, "ignoring unsafe symlink %s -> %s\n",
					full_fname(buf), sl);
			}
			kept = 1;
		} else {
			do_unlink(buf);
			if (do_symlink(sl, buf) < 0) {
				int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
				if (errno == ENOENT && make_bak_dir(buf) == 0) {
					if (do_symlink(sl, buf) < 0)
						save_errno = errno ? errno : save_errno;
					else
						save_errno = 0;
				}
				if (save_errno) {
					rsyserr(FERROR, save_errno, "link %s -> \"%s\"",
						full_fname(buf), sl);
				}
			}
			do_unlink(fname);
			kept = 1;
		}
	}
#endif

	if (!kept && !S_ISREG(file->mode)) {
		rprintf(FINFO, "make_bak: skipping non-regular file %s\n",
			fname);
		unmake_file(file);
		return 1;
	}

	/* move to keep tree if a file */
	if (!kept) {
		if (robust_move(fname, buf) != 0) {
			rsyserr(FERROR, errno, "keep_backup failed: %s -> \"%s\"",
				full_fname(fname), buf);
		} else if (sx.st.st_nlink > 1) {
			/* If someone has hard-linked the file into the backup
			 * dir, rename() might return success but do nothing! */
			robust_unlink(fname); /* Just in case... */
		}
	}
	preserve_xattrs = 0;
	set_file_attrs(buf, file, NULL, fname, 0);
	preserve_xattrs = save_preserve_xattrs;
	unmake_file(file);

	if (verbose > 1) {
		rprintf(FINFO, "backed up %s to %s\n",
			fname, buf);
	}
	return 1;
}


/* main backup switch routine */
int make_backup(const char *fname)
{
	if (backup_dir)
		return keep_backup(fname);
	return make_simple_backup(fname);
}
Commit	Line	Data
addf0c4a	1	/*
0f78b815 WD	2	* Backup handling code.
	3	*
	4	* Copyright (C) 1999 Andrew Tridgell
d3d07a5e	5	* Copyright (C) 2003-2008 Wayne Davison
0f78b815 WD	6	*
0f78b815 WD	7	* This program is free software; you can redistribute it and/or modify
8e41b68e WD	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 3 of the License, or
	10	* (at your option) any later version.
0f78b815 WD	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
e7c67065	17	* You should have received a copy of the GNU General Public License along
4fd842f9	18	* with this program; if not, visit the http://fsf.org website.
0f78b815	19	*/
3d19b4c8 AT	20
	21	#include "rsync.h"
	22
	23	extern int verbose;
378a074c	24	extern int am_root;
1c3344a1	25	extern int preserve_acls;
16edf865	26	extern int preserve_xattrs;
378a074c	27	extern int preserve_devices;
b5c6a6ae	28	extern int preserve_specials;
378a074c	29	extern int preserve_links;
377dbd20	30	extern int safe_symlinks;
6b2a3d5d	31	extern int backup_dir_len;
82ad07c4 WD	32	extern unsigned int backup_dir_remainder;
	33	extern char backup_dir_buf[MAXPATHLEN];
	34	extern char *backup_suffix;
	35	extern char *backup_dir;
378a074c	36
c94e4afb	37	/* make a complete pathname for backup file */
45d8bfe0	38	char get_backup_name(const char fname)
c94e4afb	39	{
c94e4afb WD	40	if (backup_dir) {
	41	if (stringjoin(backup_dir_buf + backup_dir_len, backup_dir_remainder,
	42	fname, backup_suffix, NULL) < backup_dir_remainder)
	43	return backup_dir_buf;
	44	} else {
fb22c277 WD	45	if (stringjoin(backup_dir_buf, MAXPATHLEN,
	46	fname, backup_suffix, NULL) < MAXPATHLEN)
	47	return backup_dir_buf;
c94e4afb WD	48	}
	49
	50	rprintf(FERROR, "backup filename too long\n");
	51	return NULL;
	52	}
	53
66203a98	54	/* simple backup creates a backup with a suffix in the same directory */
45d8bfe0	55	static int make_simple_backup(const char *fname)
3d19b4c8	56	{
ba679d51	57	int rename_errno;
45d8bfe0	58	const char *fnamebak = get_backup_name(fname);
5d2a7071	59
c94e4afb	60	if (!fnamebak)
3d19b4c8	61	return 0;
3d19b4c8	62
ba679d51 WD	63	while (1) {
	64	if (do_rename(fname, fnamebak) == 0) {
	65	if (verbose > 1) {
	66	rprintf(FINFO, "backed up %s to %s\n",
45c49b52	67	fname, fnamebak);
ba679d51 WD	68	}
ba679d51 WD	69	break;
3d19b4c8	70	}
ba679d51 WD	71	/* cygwin (at least version b19) reports EINVAL */
	72	if (errno == ENOENT \|\| errno == EINVAL)
	73	break;
	74
	75	rename_errno = errno;
	76	if (errno == EISDIR && do_rmdir(fnamebak) == 0)
	77	continue;
	78	if (errno == ENOTDIR && do_unlink(fnamebak) == 0)
	79	continue;
	80
	81	rsyserr(FERROR, rename_errno, "rename %s to backup %s",
45c49b52	82	fname, fnamebak);
ba679d51 WD	83	errno = rename_errno;
ba679d51 WD	84	return 0;
3d19b4c8	85	}
ba679d51	86
3d19b4c8 AT	87	return 1;
3d19b4c8 AT	88	}
66203a98 AT	89
66203a98 AT	90
378a074c AT	91	/****************************************************************************
	92	Create a directory given an absolute path, perms based upon another directory
	93	path
	94	****************************************************************************/
e1ac7791	95	int make_bak_dir(const char *fullpath)
378a074c	96	{
e1ac7791	97	char fbuf[MAXPATHLEN], rel, end, *p;
1c3344a1	98	struct file_struct *file;
e1ac7791	99	int len = backup_dir_len;
13710874	100	stat_x sx;
de0e2250	101
e1ac7791	102	while (*fullpath == '.' && fullpath[1] == '/') {
de0e2250	103	fullpath += 2;
e1ac7791 WD	104	len -= 2;
	105	}
	106
	107	if (strlcpy(fbuf, fullpath, sizeof fbuf) >= sizeof fbuf)
	108	return -1;
	109
	110	rel = fbuf + len;
	111	end = p = rel + strlen(rel);
de0e2250 WD	112
	113	/* Try to find an existing dir, starting from the deepest dir. */
	114	while (1) {
e1ac7791 WD	115	if (--p == fbuf)
e1ac7791 WD	116	return -1;
de0e2250 WD	117	if (*p == '/') {
de0e2250 WD	118	*p = '\0';
e1ac7791	119	if (mkdir_defmode(fbuf) == 0)
de0e2250 WD	120	break;
de0e2250 WD	121	if (errno != ENOENT) {
d62bcc17 WD	122	rsyserr(FERROR, errno,
d62bcc17 WD	123	"make_bak_dir mkdir %s failed",
e1ac7791 WD	124	full_fname(fbuf));
e1ac7791 WD	125	return -1;
de0e2250 WD	126	}
de0e2250 WD	127	}
47d6a60c	128	}
de0e2250 WD	129
	130	/* Make all the dirs that we didn't find on the way here. */
	131	while (1) {
	132	if (p >= rel) {
	133	/* Try to transfer the directory settings of the
	134	* actual dir that the files are coming from. */
9439c0cb	135	if (x_stat(rel, &sx.st, NULL) < 0) {
d62bcc17 WD	136	rsyserr(FERROR, errno,
	137	"make_bak_dir stat %s failed",
	138	full_fname(rel));
de0e2250	139	} else {
1c3344a1 WD	140	#ifdef SUPPORT_ACLS
1c3344a1 WD	141	sx.acc_acl = sx.def_acl = NULL;
16edf865 WD	142	#endif
	143	#ifdef SUPPORT_XATTRS
	144	sx.xattr = NULL;
1c3344a1 WD	145	#endif
	146	if (!(file = make_file(rel, NULL, NULL, 0, NO_FILTERS)))
	147	continue;
	148	#ifdef SUPPORT_ACLS
	149	if (preserve_acls && !S_ISLNK(file->mode)) {
	150	get_acl(rel, &sx);
	151	cache_acl(file, &sx);
	152	free_acl(&sx);
	153	}
1e999f9f	154	#endif
16edf865 WD	155	#ifdef SUPPORT_XATTRS
	156	if (preserve_xattrs) {
	157	get_xattr(rel, &sx);
	158	cache_xattr(file, &sx);
	159	free_xattr(&sx);
	160	}
	161	#endif
e1ac7791	162	set_file_attrs(fbuf, file, NULL, NULL, 0);
b13505da	163	unmake_file(file);
47d6a60c S	164	}
47d6a60c S	165	}
de0e2250 WD	166	*p = '/';
	167	p += strlen(p);
	168	if (p == end)
	169	break;
e1ac7791	170	if (mkdir_defmode(fbuf) < 0) {
d62bcc17	171	rsyserr(FERROR, errno, "make_bak_dir mkdir %s failed",
e1ac7791 WD	172	full_fname(fbuf));
e1ac7791 WD	173	return -1;
de0e2250	174	}
47d6a60c	175	}
de0e2250	176
e1ac7791	177	return 0;
378a074c AT	178	}
378a074c AT	179
66203a98	180	/* robustly move a file, creating new directory structures if necessary */
45d8bfe0	181	static int robust_move(const char src, char dst)
66203a98	182	{
f1ca7c44 WD	183	if (robust_rename(src, dst, NULL, 0755) < 0) {
	184	int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
	185	if (errno == ENOENT && make_bak_dir(dst) == 0) {
	186	if (robust_rename(src, dst, NULL, 0755) < 0)
	187	save_errno = errno ? errno : save_errno;
	188	else
	189	save_errno = 0;
	190	}
	191	if (save_errno) {
	192	errno = save_errno;
	193	return -1;
	194	}
	195	}
62c9e6b3	196	return 0;
de0e2250	197	}
66203a98 AT	198
66203a98 AT	199
de0e2250 WD	200	/* If we have a --backup-dir, then we get here from make_backup().
de0e2250 WD	201	* We will move the file to be deleted into a parallel directory tree. */
45d8bfe0	202	static int keep_backup(const char *fname)
66203a98	203	{
13710874	204	stat_x sx;
66203a98	205	struct file_struct *file;
c94e4afb	206	char *buf;
e9489cd6	207	int save_preserve_xattrs = preserve_xattrs;
47d6a60c	208	int kept = 0;
378a074c AT	209	int ret_code;
378a074c AT	210
66203a98	211	/* return if no file to keep */
9439c0cb	212	if (x_lstat(fname, &sx.st, NULL) < 0)
9fd62d15	213	return 1;
1c3344a1 WD	214	#ifdef SUPPORT_ACLS
	215	sx.acc_acl = sx.def_acl = NULL;
	216	#endif
16edf865 WD	217	#ifdef SUPPORT_XATTRS
	218	sx.xattr = NULL;
	219	#endif
66203a98	220
3de73827	221	if (!(file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
c94e4afb	222	return 1; /* the file could have disappeared */
66203a98	223
82ad07c4 WD	224	if (!(buf = get_backup_name(fname))) {
82ad07c4 WD	225	unmake_file(file);
47d6a60c	226	return 0;
82ad07c4	227	}
378a074c	228
1c3344a1 WD	229	#ifdef SUPPORT_ACLS
	230	if (preserve_acls && !S_ISLNK(file->mode)) {
	231	get_acl(fname, &sx);
	232	cache_acl(file, &sx);
	233	free_acl(&sx);
	234	}
	235	#endif
16edf865 WD	236	#ifdef SUPPORT_XATTRS
	237	if (preserve_xattrs) {
	238	get_xattr(fname, &sx);
	239	cache_xattr(file, &sx);
	240	free_xattr(&sx);
	241	}
	242	#endif
1c3344a1	243
378a074c	244	/* Check to see if this is a device file, or link */
b5c6a6ae WD	245	if ((am_root && preserve_devices && IS_DEVICE(file->mode))
b5c6a6ae WD	246	\|\| (preserve_specials && IS_SPECIAL(file->mode))) {
e238c997 WD	247	uint32 *devp = F_RDEV_P(file);
e238c997 WD	248	dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
93e28fbd	249	do_unlink(buf);
f1ca7c44 WD	250	if (do_mknod(buf, file->mode, rdev) < 0) {
	251	int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
	252	if (errno == ENOENT && make_bak_dir(buf) == 0) {
	253	if (do_mknod(buf, file->mode, rdev) < 0)
	254	save_errno = errno ? errno : save_errno;
	255	else
	256	save_errno = 0;
	257	}
	258	if (save_errno) {
	259	rsyserr(FERROR, save_errno, "mknod %s failed",
	260	full_fname(buf));
	261	}
93e28fbd WD	262	} else if (verbose > 2) {
93e28fbd WD	263	rprintf(FINFO, "make_backup: DEVICE %s successful.\n",
45c49b52	264	fname);
47d6a60c S	265	}
	266	kept = 1;
	267	do_unlink(fname);
	268	}
378a074c	269
addf0c4a	270	if (!kept && S_ISDIR(file->mode)) {
378a074c	271	/* make an empty directory */
f1ca7c44 WD	272	if (do_mkdir(buf, file->mode) < 0) {
	273	int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
	274	if (errno == ENOENT && make_bak_dir(buf) == 0) {
	275	if (do_mkdir(buf, file->mode) < 0)
	276	save_errno = errno ? errno : save_errno;
	277	else
	278	save_errno = 0;
	279	}
	280	if (save_errno) {
	281	rsyserr(FINFO, save_errno, "mkdir %s failed",
	282	full_fname(buf));
	283	}
377dbd20	284	}
47d6a60c	285
377dbd20	286	ret_code = do_rmdir(fname);
addf0c4a	287	if (verbose > 2) {
ea42541f WD	288	rprintf(FINFO, "make_backup: RMDIR %s returns %i\n",
ea42541f WD	289	full_fname(fname), ret_code);
47d6a60c S	290	}
	291	kept = 1;
	292	}
378a074c	293
4f5b0756	294	#ifdef SUPPORT_LINKS
addf0c4a	295	if (!kept && preserve_links && S_ISLNK(file->mode)) {
82ad07c4 WD	296	const char *sl = F_SYMLINK(file);
82ad07c4 WD	297	if (safe_symlinks && unsafe_symlink(sl, buf)) {
47d6a60c S	298	if (verbose) {
47d6a60c S	299	rprintf(FINFO, "ignoring unsafe symlink %s -> %s\n",
82ad07c4	300	full_fname(buf), sl);
47d6a60c S	301	}
47d6a60c S	302	kept = 1;
93e28fbd WD	303	} else {
93e28fbd WD	304	do_unlink(buf);
f1ca7c44 WD	305	if (do_symlink(sl, buf) < 0) {
	306	int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
	307	if (errno == ENOENT && make_bak_dir(buf) == 0) {
	308	if (do_symlink(sl, buf) < 0)
	309	save_errno = errno ? errno : save_errno;
	310	else
	311	save_errno = 0;
	312	}
	313	if (save_errno) {
	314	rsyserr(FERROR, save_errno, "link %s -> \"%s\"",
	315	full_fname(buf), sl);
	316	}
93e28fbd WD	317	}
	318	do_unlink(fname);
	319	kept = 1;
47d6a60c	320	}
47d6a60c	321	}
378a074c	322	#endif
378a074c	323
addf0c4a	324	if (!kept && !S_ISREG(file->mode)) {
47d6a60c	325	rprintf(FINFO, "make_bak: skipping non-regular file %s\n",
45c49b52	326	fname);
82ad07c4	327	unmake_file(file);
f8c8ef9e	328	return 1;
47d6a60c	329	}
66203a98	330
66203a98	331	/* move to keep tree if a file */
addf0c4a	332	if (!kept) {
c94e4afb	333	if (robust_move(fname, buf) != 0) {
d62bcc17	334	rsyserr(FERROR, errno, "keep_backup failed: %s -> \"%s\"",
45c49b52	335	full_fname(fname), buf);
1c3344a1	336	} else if (sx.st.st_nlink > 1) {
394bcdb5	337	/* If someone has hard-linked the file into the backup
3cb22c20	338	* dir, rename() might return success but do nothing! */
394bcdb5	339	robust_unlink(fname); /* Just in case... */
47d6a60c S	340	}
47d6a60c S	341	}
e9489cd6	342	preserve_xattrs = 0;
16edf865	343	set_file_attrs(buf, file, NULL, fname, 0);
e9489cd6	344	preserve_xattrs = save_preserve_xattrs;
82ad07c4	345	unmake_file(file);
378a074c	346
4875d6b6 WD	347	if (verbose > 1) {
4875d6b6 WD	348	rprintf(FINFO, "backed up %s to %s\n",
45c49b52	349	fname, buf);
4875d6b6	350	}
66203a98	351	return 1;
de0e2250	352	}
66203a98 AT	353
	354
	355	/* main backup switch routine */
45d8bfe0	356	int make_backup(const char *fname)
66203a98 AT	357	{
66203a98 AT	358	if (backup_dir)
addf0c4a WD	359	return keep_backup(fname);
addf0c4a WD	360	return make_simple_backup(fname);
66203a98	361	}