| 1 | /* |
| 2 | Copyright (C) Andrew Tridgell 1999 |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU General Public License as published by |
| 6 | the Free Software Foundation; either version 2 of the License, or |
| 7 | (at your option) any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, write to the Free Software |
| 16 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 17 | */ |
| 18 | |
| 19 | /* backup handling code */ |
| 20 | |
| 21 | #include "rsync.h" |
| 22 | |
| 23 | extern int verbose; |
| 24 | extern char *backup_suffix; |
| 25 | |
| 26 | |
| 27 | int make_backup(char *fname) |
| 28 | { |
| 29 | char fnamebak[MAXPATHLEN]; |
| 30 | if (strlen(fname) + strlen(backup_suffix) > (MAXPATHLEN-1)) { |
| 31 | rprintf(FERROR,"backup filename too long\n"); |
| 32 | return 0; |
| 33 | } |
| 34 | |
| 35 | slprintf(fnamebak,sizeof(fnamebak),"%s%s",fname,backup_suffix); |
| 36 | if (do_rename(fname,fnamebak) != 0) { |
| 37 | /* cygwin (at least version b19) reports EINVAL */ |
| 38 | if (errno != ENOENT && errno != EINVAL) { |
| 39 | rprintf(FERROR,"rename %s %s : %s\n",fname,fnamebak,strerror(errno)); |
| 40 | return 0; |
| 41 | } |
| 42 | } else if (verbose > 1) { |
| 43 | rprintf(FINFO,"backed up %s to %s\n",fname,fnamebak); |
| 44 | } |
| 45 | return 1; |
| 46 | } |