Added RERR_VANISHED.
[rsync/rsync.git] / backup.c
index 52590c1..c45b3df 100644 (file)
--- a/backup.c
+++ b/backup.c
 #include "rsync.h"
 
 extern int verbose;
+extern int backup_suffix_len;
+extern int backup_dir_len;
 extern char *backup_suffix;
 extern char *backup_dir;
 
-
 extern int am_root;
 extern int preserve_devices;
 extern int preserve_links;
@@ -34,20 +35,20 @@ extern int preserve_hard_links;
 static int make_simple_backup(char *fname)
 {
        char fnamebak[MAXPATHLEN];
-       if (strlen(fname) + strlen(backup_suffix) > (MAXPATHLEN-1)) {
-               rprintf(FERROR,"backup filename too long\n");
+       if (strlen(fname) + backup_suffix_len > MAXPATHLEN-1) {
+               rprintf(FERROR, "backup filename too long\n");
                return 0;
        }
 
-       slprintf(fnamebak,sizeof(fnamebak),"%s%s",fname,backup_suffix);
-       if (do_rename(fname,fnamebak) != 0) {
+       snprintf(fnamebak, sizeof(fnamebak), "%s%s", fname, backup_suffix);
+       if (do_rename(fname, fnamebak) != 0) {
                /* cygwin (at least version b19) reports EINVAL */
                if (errno != ENOENT && errno != EINVAL) {
-                       rprintf(FERROR,"rename %s %s : %s\n",fname,fnamebak,strerror(errno));
+                       rsyserr(FERROR, errno, "rename %s to backup %s", fname, fnamebak);
                        return 0;
                }
        } else if (verbose > 1) {
-               rprintf(FINFO,"backed up %s to %s\n",fname,fnamebak);
+               rprintf(FINFO, "backed up %s to %s\n", fname, fnamebak);
        }
        return 1;
 }
@@ -80,50 +81,53 @@ static int make_dir(char *name, int mask)
 Create a directory given an absolute path, perms based upon another directory
 path
 ****************************************************************************/
-static int make_bak_dir(char *fname,char *bak_path)
+static int make_bak_dir(char *fname, char *bak_path)
 {
-        STRUCT_STAT st;
-        STRUCT_STAT *st2;
-        char fullpath[MAXPATHLEN];
-        extern int orig_umask;
-        char *p;
-        char *q;
-
-        while(strncmp(bak_path,"./",2)==0) bak_path += 2;
-
-        if(bak_path[strlen(bak_path)-1]!='/') {
-                slprintf(fullpath,sizeof(fullpath),"%s/",bak_path);
-        } else {
-                slprintf(fullpath,sizeof(fullpath),"%s",bak_path);
-        }
-        p=fullpath;
-        q=&fullpath[strlen(fullpath)];  /* End of bak_path string */
-        strcat(fullpath,fname);
-
-        /* Make the directories */
-        while ((p=strchr(p,'/'))) {
-                *p = 0;
-                if(do_lstat(fullpath,&st)!=0) {
-                        do_mkdir(fullpath,0777 & ~orig_umask);
-                        if(p>q) {
-                                if(do_lstat(q,&st)!=0) {
-                                        rprintf(FERROR,"make_bak_dir stat %s : %s\n",fullpath,strerror(errno));
-                                } else {
-                                        st2=&st;
-                                        set_modtime(fullpath,st2->st_mtime);
-                                        if(do_lchown(fullpath,st2->st_uid,st2->st_gid)!=0) {
-                                                rprintf(FERROR,"make_bak_dir chown %s : %s\n",fullpath,strerror(errno));
-                                        };
-                                        if(do_chmod(fullpath,st2->st_mode)!=0) {
-                                                rprintf(FERROR,"make_bak_dir failed to set permissions on %s : %s\n",fullpath,strerror(errno));
-                                        };
-                                };
-                        }
-                };
-                *p = '/';
-                p++;
-        }
-        return 0;
+       STRUCT_STAT st;
+       STRUCT_STAT *st2;
+       char fullpath[MAXPATHLEN];
+       extern int orig_umask;
+       char *p;
+       char *q;
+
+       while(strncmp(bak_path, "./", 2) == 0) bak_path += 2;
+
+       if(bak_path[strlen(bak_path)-1] != '/') {
+               snprintf(fullpath, sizeof(fullpath), "%s/", bak_path);
+       } else {
+               snprintf(fullpath, sizeof(fullpath), "%s", bak_path);
+       }
+       p = fullpath;
+       q = &fullpath[strlen(fullpath)];  /* End of bak_path string */
+       strcat(fullpath, fname);
+
+       /* Make the directories */
+       while ((p = strchr(p, '/'))) {
+               *p = 0;
+               if(do_lstat(fullpath, &st) != 0) {
+                       do_mkdir(fullpath, 0777 & ~orig_umask);
+                       if(p>q) {
+                               if(do_lstat(q, &st) != 0) {
+                                       rprintf(FERROR, "make_bak_dir stat %s failed: %s\n",
+                                               full_fname(fullpath), strerror(errno));
+                               } else {
+                                       st2 = &st;
+                                       set_modtime(fullpath, st2->st_mtime);
+                                       if(do_lchown(fullpath, st2->st_uid, st2->st_gid) != 0) {
+                                               rprintf(FERROR, "make_bak_dir chown %s failed: %s\n",
+                                                       full_fname(fullpath), strerror(errno));
+                                       }
+                                       if(do_chmod(fullpath, st2->st_mode) != 0) {
+                                               rprintf(FERROR, "make_bak_dir failed to set permissions on %s: %s\n",
+                                                       full_fname(fullpath), strerror(errno));
+                                       }
+                               }
+                       }
+               }
+               *p = '/';
+               p++;
+       }
+       return 0;
 }
 
 /* robustly move a file, creating new directory structures if necessary */
@@ -146,7 +150,7 @@ static int robust_move(char *src, char *dst)
                if (failed) {
                        if (verbose > 2)
                                rprintf (FERROR, "robust_move failed: %s(%d)\n",
-                                       strerror (errno), errno);
+                                   strerror (errno), errno);
                        switch (errno) {
                                /* external filesystem */
                                case EXDEV:
@@ -155,7 +159,7 @@ static int robust_move(char *src, char *dst)
                                        break;
                                /* no directory to write to */
                                case ENOENT:
-                                       make_dir (dst, 0755);
+                                       make_dir(dst, 0700);
                                        keep_trying--;
                                        break;
                                default:
@@ -179,12 +183,12 @@ static int keep_backup(char *fname)
        STRUCT_STAT st;
        struct file_struct *file;
 
-       int kept=0;
+       int kept = 0;
        int ret_code;
 
        if (!initialised) {
-               if (backup_dir[strlen(backup_dir) - 1] == '/')
-                       backup_dir[strlen(backup_dir) - 1] = 0;
+               if (backup_dir_len && backup_dir[backup_dir_len - 1] == '/')
+                       backup_dir[--backup_dir_len] = '\0';
                if (verbose > 0)
                        rprintf (FINFO, "backup_dir is %s\n", backup_dir);
                initialised = 1;
@@ -197,76 +201,86 @@ static int keep_backup(char *fname)
        if (do_stat (fname, &st)) return 1;
 #endif
 
-       file = make_file (0, fname);
+       file = make_file(fname, NULL, NO_EXCLUDES);
 
-        /* make a complete pathname for backup file */
-        if (strlen(backup_dir) + strlen(fname) > (MAXPATHLEN - 1)) {
-                rprintf (FERROR, "keep_backup filename too long\n");
-                return 0;
-        }
+       /* the file could have disappeared */
+       if (!file) return 1;
 
-        slprintf(keep_name, sizeof (keep_name), "%s/%s", backup_dir, fname);
+       /* make a complete pathname for backup file */
+       if (backup_dir_len+strlen(fname)+backup_suffix_len > MAXPATHLEN-1) {
+               rprintf (FERROR, "keep_backup filename too long\n");
+               return 0;
+       }
 
+       snprintf(keep_name, sizeof (keep_name), "%s/%s%s",
+           backup_dir, fname, backup_suffix);
 
 #ifdef HAVE_MKNOD
        /* Check to see if this is a device file, or link */
-        if(IS_DEVICE(file->mode)) {
-                if(am_root && preserve_devices) {
-                        make_bak_dir(fname,backup_dir);
-                        if(do_mknod(keep_name,file->mode,file->rdev)!=0) {
-                                rprintf(FERROR,"mknod %s : %s\n",keep_name,strerror(errno));
-                        } else {
-                                if(verbose>2)
-                                        rprintf(FINFO,"make_backup : DEVICE %s successful.\n",fname);
-                        };
-                };
-               kept=1;
-                do_unlink(fname);
-        };
+       if(IS_DEVICE(file->mode)) {
+               if(am_root && preserve_devices) {
+                       make_bak_dir(fname, backup_dir);
+                       if(do_mknod(keep_name, file->mode, file->rdev) != 0) {
+                               rprintf(FERROR, "mknod %s failed: %s\n",
+                                       full_fname(keep_name), strerror(errno));
+                       } else if(verbose>2) {
+                               rprintf(FINFO, "make_backup: DEVICE %s successful.\n", fname);
+                       }
+               }
+               kept = 1;
+               do_unlink(fname);
+       }
 #endif
 
        if(!kept && S_ISDIR(file->mode)) {
                /* make an empty directory */
-                make_bak_dir(fname,backup_dir);
-                do_mkdir(keep_name,file->mode);
-                ret_code=do_rmdir(fname);
-                if(verbose>2)
-                        rprintf(FINFO,"make_backup : RMDIR %s returns %i\n",fname,ret_code);
-               kept=1;
-        };
+               make_bak_dir(fname, backup_dir);
+               do_mkdir(keep_name, file->mode);
+               ret_code = do_rmdir(fname);
+
+               if(verbose>2) {
+                       rprintf(FINFO, "make_backup: RMDIR %s returns %i\n",
+                               full_fname(fname), ret_code);
+               }
+               kept = 1;
+       }
 
 #if SUPPORT_LINKS
-        if(!kept && preserve_links && S_ISLNK(file->mode)) {
-                extern int safe_symlinks;
-                if (safe_symlinks && unsafe_symlink(file->link, keep_name)) {
-                        if (verbose) {
-                                rprintf(FINFO,"ignoring unsafe symlink %s -> %s\n",
-                                        keep_name,file->link);
-                        }
-                       kept=1;
-                }
-                make_bak_dir(fname,backup_dir);
-                if(do_symlink(file->link,keep_name) != 0) {
-                        rprintf(FERROR,"link %s -> %s : %s\n",keep_name,file->link,strerror(errno));
-                };
-                do_unlink(fname);
-               kept=1;
-        };
+       if(!kept && preserve_links && S_ISLNK(file->mode)) {
+               extern int safe_symlinks;
+               if (safe_symlinks && unsafe_symlink(file->link, keep_name)) {
+                       if (verbose) {
+                               rprintf(FINFO, "ignoring unsafe symlink %s -> %s\n",
+                                       full_fname(keep_name), file->link);
+                       }
+                       kept = 1;
+               }
+               make_bak_dir(fname, backup_dir);
+               if(do_symlink(file->link, keep_name) != 0) {
+                       rprintf(FERROR, "link %s -> %s : %s\n",
+                               full_fname(keep_name), file->link, strerror(errno));
+               }
+               do_unlink(fname);
+               kept = 1;
+       }
 #endif
-        if(!kept && preserve_hard_links && check_hard_link(file)) {
-                if(verbose > 1) rprintf(FINFO,"%s is a hard link\n",f_name(file));
-        };
+       if(!kept && preserve_hard_links && check_hard_link(file)) {
+               if(verbose > 1)
+                       rprintf(FINFO, "%s is a hard link\n", f_name(file));
+       }
 
-        if(!kept && !S_ISREG(file->mode)) {
-                rprintf(FINFO,"make_bak: skipping non-regular file %s\n",fname);
-        }
+       if(!kept && !S_ISREG(file->mode)) {
+               rprintf(FINFO, "make_bak: skipping non-regular file %s\n",
+                   fname);
+       }
 
        /* move to keep tree if a file */
        if(!kept) {
-               if (!robust_move (fname, keep_name))
-                       rprintf(FERROR, "keep_backup failed %s -> %s : %s\n",
-                               fname, keep_name, strerror(errno));
-       };
+               if (!robust_move (fname, keep_name)) {
+                       rprintf(FERROR, "keep_backup failed: %s -> \"%s\": %s\n",
+                               full_fname(fname), keep_name, strerror(errno));
+               }
+       }
        set_perms (keep_name, file, NULL, 0);
        free_file (file);
        free (file);
@@ -285,4 +299,3 @@ int make_backup(char *fname)
        else
                return (make_simple_backup(fname));
 }
-