[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 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 (INFO_GTE(BACKUP, 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))) {
		int save_errno;
		do_unlink(buf);
		if (do_mknod(buf, file->mode, sx.st.st_rdev) < 0) {
			save_errno = errno ? errno : EINVAL; /* 0 paranoia */
			if (errno == ENOENT && make_bak_dir(buf) == 0) {
				if (do_mknod(buf, file->mode, sx.st.st_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
			save_errno = 0;
		if (DEBUG_GTE(BACKUP, 1) && save_errno == 0) {
			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 (DEBUG_GTE(BACKUP, 1)) {
			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 (INFO_GTE(SYMSAFE, 1)) {
				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 (INFO_GTE(BACKUP, 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
378a074c	23	extern int am_root;
1c3344a1	24	extern int preserve_acls;
16edf865	25	extern int preserve_xattrs;
378a074c	26	extern int preserve_devices;
b5c6a6ae	27	extern int preserve_specials;
378a074c	28	extern int preserve_links;
377dbd20	29	extern int safe_symlinks;
6b2a3d5d	30	extern int backup_dir_len;
82ad07c4 WD	31	extern unsigned int backup_dir_remainder;
	32	extern char backup_dir_buf[MAXPATHLEN];
	33	extern char *backup_suffix;
	34	extern char *backup_dir;
378a074c	35
c94e4afb	36	/* make a complete pathname for backup file */
45d8bfe0	37	char get_backup_name(const char fname)
c94e4afb	38	{
c94e4afb WD	39	if (backup_dir) {
	40	if (stringjoin(backup_dir_buf + backup_dir_len, backup_dir_remainder,
	41	fname, backup_suffix, NULL) < backup_dir_remainder)
	42	return backup_dir_buf;
	43	} else {
fb22c277 WD	44	if (stringjoin(backup_dir_buf, MAXPATHLEN,
	45	fname, backup_suffix, NULL) < MAXPATHLEN)
	46	return backup_dir_buf;
c94e4afb WD	47	}
	48
	49	rprintf(FERROR, "backup filename too long\n");
	50	return NULL;
	51	}
	52
66203a98	53	/* simple backup creates a backup with a suffix in the same directory */
45d8bfe0	54	static int make_simple_backup(const char *fname)
3d19b4c8	55	{
ba679d51	56	int rename_errno;
45d8bfe0	57	const char *fnamebak = get_backup_name(fname);
5d2a7071	58
c94e4afb	59	if (!fnamebak)
3d19b4c8	60	return 0;
3d19b4c8	61
ba679d51 WD	62	while (1) {
ba679d51 WD	63	if (do_rename(fname, fnamebak) == 0) {
951e826b	64	if (INFO_GTE(BACKUP, 1)) {
ba679d51	65	rprintf(FINFO, "backed up %s to %s\n",
45c49b52	66	fname, fnamebak);
ba679d51 WD	67	}
ba679d51 WD	68	break;
3d19b4c8	69	}
ba679d51 WD	70	/* cygwin (at least version b19) reports EINVAL */
	71	if (errno == ENOENT \|\| errno == EINVAL)
	72	break;
	73
	74	rename_errno = errno;
	75	if (errno == EISDIR && do_rmdir(fnamebak) == 0)
	76	continue;
	77	if (errno == ENOTDIR && do_unlink(fnamebak) == 0)
	78	continue;
	79
	80	rsyserr(FERROR, rename_errno, "rename %s to backup %s",
45c49b52	81	fname, fnamebak);
ba679d51 WD	82	errno = rename_errno;
ba679d51 WD	83	return 0;
3d19b4c8	84	}
ba679d51	85
3d19b4c8 AT	86	return 1;
3d19b4c8 AT	87	}
66203a98 AT	88
66203a98 AT	89
378a074c AT	90	/****************************************************************************
	91	Create a directory given an absolute path, perms based upon another directory
	92	path
	93	****************************************************************************/
e1ac7791	94	int make_bak_dir(const char *fullpath)
378a074c	95	{
e1ac7791	96	char fbuf[MAXPATHLEN], rel, end, *p;
1c3344a1	97	struct file_struct *file;
e1ac7791	98	int len = backup_dir_len;
13710874	99	stat_x sx;
de0e2250	100
e1ac7791	101	while (*fullpath == '.' && fullpath[1] == '/') {
de0e2250	102	fullpath += 2;
e1ac7791 WD	103	len -= 2;
	104	}
	105
	106	if (strlcpy(fbuf, fullpath, sizeof fbuf) >= sizeof fbuf)
	107	return -1;
	108
	109	rel = fbuf + len;
	110	end = p = rel + strlen(rel);
de0e2250 WD	111
	112	/* Try to find an existing dir, starting from the deepest dir. */
	113	while (1) {
e1ac7791 WD	114	if (--p == fbuf)
e1ac7791 WD	115	return -1;
de0e2250 WD	116	if (*p == '/') {
de0e2250 WD	117	*p = '\0';
e1ac7791	118	if (mkdir_defmode(fbuf) == 0)
de0e2250 WD	119	break;
de0e2250 WD	120	if (errno != ENOENT) {
d62bcc17 WD	121	rsyserr(FERROR, errno,
d62bcc17 WD	122	"make_bak_dir mkdir %s failed",
e1ac7791 WD	123	full_fname(fbuf));
e1ac7791 WD	124	return -1;
de0e2250 WD	125	}
de0e2250 WD	126	}
47d6a60c	127	}
de0e2250 WD	128
	129	/* Make all the dirs that we didn't find on the way here. */
	130	while (1) {
	131	if (p >= rel) {
	132	/* Try to transfer the directory settings of the
	133	* actual dir that the files are coming from. */
9439c0cb	134	if (x_stat(rel, &sx.st, NULL) < 0) {
d62bcc17 WD	135	rsyserr(FERROR, errno,
	136	"make_bak_dir stat %s failed",
	137	full_fname(rel));
de0e2250	138	} else {
1c3344a1 WD	139	#ifdef SUPPORT_ACLS
1c3344a1 WD	140	sx.acc_acl = sx.def_acl = NULL;
16edf865 WD	141	#endif
	142	#ifdef SUPPORT_XATTRS
	143	sx.xattr = NULL;
1c3344a1 WD	144	#endif
	145	if (!(file = make_file(rel, NULL, NULL, 0, NO_FILTERS)))
	146	continue;
	147	#ifdef SUPPORT_ACLS
	148	if (preserve_acls && !S_ISLNK(file->mode)) {
	149	get_acl(rel, &sx);
	150	cache_acl(file, &sx);
	151	free_acl(&sx);
	152	}
1e999f9f	153	#endif
16edf865 WD	154	#ifdef SUPPORT_XATTRS
	155	if (preserve_xattrs) {
	156	get_xattr(rel, &sx);
	157	cache_xattr(file, &sx);
	158	free_xattr(&sx);
	159	}
	160	#endif
e1ac7791	161	set_file_attrs(fbuf, file, NULL, NULL, 0);
b13505da	162	unmake_file(file);
47d6a60c S	163	}
47d6a60c S	164	}
de0e2250 WD	165	*p = '/';
	166	p += strlen(p);
	167	if (p == end)
	168	break;
e1ac7791	169	if (mkdir_defmode(fbuf) < 0) {
d62bcc17	170	rsyserr(FERROR, errno, "make_bak_dir mkdir %s failed",
e1ac7791 WD	171	full_fname(fbuf));
e1ac7791 WD	172	return -1;
de0e2250	173	}
47d6a60c	174	}
de0e2250	175
e1ac7791	176	return 0;
378a074c AT	177	}
378a074c AT	178
66203a98	179	/* robustly move a file, creating new directory structures if necessary */
45d8bfe0	180	static int robust_move(const char src, char dst)
66203a98	181	{
f1ca7c44 WD	182	if (robust_rename(src, dst, NULL, 0755) < 0) {
	183	int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
	184	if (errno == ENOENT && make_bak_dir(dst) == 0) {
	185	if (robust_rename(src, dst, NULL, 0755) < 0)
	186	save_errno = errno ? errno : save_errno;
	187	else
	188	save_errno = 0;
	189	}
	190	if (save_errno) {
	191	errno = save_errno;
	192	return -1;
	193	}
	194	}
62c9e6b3	195	return 0;
de0e2250	196	}
66203a98 AT	197
66203a98 AT	198
de0e2250 WD	199	/* If we have a --backup-dir, then we get here from make_backup().
de0e2250 WD	200	* We will move the file to be deleted into a parallel directory tree. */
45d8bfe0	201	static int keep_backup(const char *fname)
66203a98	202	{
13710874	203	stat_x sx;
66203a98	204	struct file_struct *file;
c94e4afb	205	char *buf;
e9489cd6	206	int save_preserve_xattrs = preserve_xattrs;
47d6a60c	207	int kept = 0;
378a074c AT	208	int ret_code;
378a074c AT	209
66203a98	210	/* return if no file to keep */
9439c0cb	211	if (x_lstat(fname, &sx.st, NULL) < 0)
9fd62d15	212	return 1;
1c3344a1 WD	213	#ifdef SUPPORT_ACLS
	214	sx.acc_acl = sx.def_acl = NULL;
	215	#endif
16edf865 WD	216	#ifdef SUPPORT_XATTRS
	217	sx.xattr = NULL;
	218	#endif
66203a98	219
3de73827	220	if (!(file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
c94e4afb	221	return 1; /* the file could have disappeared */
66203a98	222
82ad07c4 WD	223	if (!(buf = get_backup_name(fname))) {
82ad07c4 WD	224	unmake_file(file);
47d6a60c	225	return 0;
82ad07c4	226	}
378a074c	227
1c3344a1 WD	228	#ifdef SUPPORT_ACLS
	229	if (preserve_acls && !S_ISLNK(file->mode)) {
	230	get_acl(fname, &sx);
	231	cache_acl(file, &sx);
	232	free_acl(&sx);
	233	}
	234	#endif
16edf865 WD	235	#ifdef SUPPORT_XATTRS
	236	if (preserve_xattrs) {
	237	get_xattr(fname, &sx);
	238	cache_xattr(file, &sx);
	239	free_xattr(&sx);
	240	}
	241	#endif
1c3344a1	242
378a074c	243	/* Check to see if this is a device file, or link */
b5c6a6ae WD	244	if ((am_root && preserve_devices && IS_DEVICE(file->mode))
b5c6a6ae WD	245	\|\| (preserve_specials && IS_SPECIAL(file->mode))) {
88e05f84	246	int save_errno;
93e28fbd	247	do_unlink(buf);
a64f19e2	248	if (do_mknod(buf, file->mode, sx.st.st_rdev) < 0) {
88e05f84	249	save_errno = errno ? errno : EINVAL; /* 0 paranoia */
f1ca7c44	250	if (errno == ENOENT && make_bak_dir(buf) == 0) {
a64f19e2	251	if (do_mknod(buf, file->mode, sx.st.st_rdev) < 0)
f1ca7c44 WD	252	save_errno = errno ? errno : save_errno;
	253	else
	254	save_errno = 0;
	255	}
	256	if (save_errno) {
	257	rsyserr(FERROR, save_errno, "mknod %s failed",
	258	full_fname(buf));
	259	}
88e05f84 WD	260	} else
88e05f84 WD	261	save_errno = 0;
951e826b	262	if (DEBUG_GTE(BACKUP, 1) && save_errno == 0) {
93e28fbd	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);
951e826b	287	if (DEBUG_GTE(BACKUP, 1)) {
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)) {
951e826b	298	if (INFO_GTE(SYMSAFE, 1)) {
47d6a60c	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
951e826b	347	if (INFO_GTE(BACKUP, 1)) {
4875d6b6	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	}