Got rid of the RSYNC_RSH_IO stuff for now.
[rsync/rsync.git] / rsync.c
diff --git a/rsync.c b/rsync.c
index ceabfda..cfee2d0 100644 (file)
--- a/rsync.c
+++ b/rsync.c
@@ -1,17 +1,17 @@
-/* 
+/*
    Copyright (C) Andrew Tridgell 1996
    Copyright (C) Paul Mackerras 1996
-   
+
    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 2 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, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
@@ -30,7 +30,6 @@ extern int preserve_uid;
 extern int preserve_gid;
 extern int preserve_perms;
 extern int make_backups;
-extern char *backup_suffix;
 
 
 /*
@@ -44,8 +43,8 @@ void free_sums(struct sum_struct *s)
 
 
 /*
- * delete a file or directory. If force_delet is set then delete 
- * recursively 
+ * delete a file or directory. If force_delete is set then delete
+ * recursively
  */
 int delete_file(char *fname)
 {
@@ -57,56 +56,63 @@ int delete_file(char *fname)
        int ret;
        extern int recurse;
 
-       if (do_unlink(fname) == 0 || errno == ENOENT) return 0;
-
 #if SUPPORT_LINKS
        ret = do_lstat(fname, &st);
 #else
        ret = do_stat(fname, &st);
 #endif
        if (ret) {
-               rprintf(FERROR,"stat(%s) : %s\n", fname, strerror(errno));
                return -1;
        }
 
        if (!S_ISDIR(st.st_mode)) {
-               rprintf(FERROR,"unlink(%s) : %s\n", fname, strerror(errno));
+               if (robust_unlink(fname) == 0 || errno == ENOENT) return 0;
+               rprintf(FERROR, "delete_file: unlink %s failed: %s\n",
+                       full_fname(fname), strerror(errno));
                return -1;
        }
 
        if (do_rmdir(fname) == 0 || errno == ENOENT) return 0;
-       if (!force_delete || !recurse || 
+       if (!force_delete || !recurse ||
            (errno != ENOTEMPTY && errno != EEXIST)) {
-               rprintf(FERROR,"rmdir(%s) : %s\n", fname, strerror(errno));
+               rprintf(FERROR, "delete_file: rmdir %s failed: %s\n",
+                       full_fname(fname), strerror(errno));
                return -1;
        }
 
        /* now we do a recsursive delete on the directory ... */
        d = opendir(fname);
        if (!d) {
-               rprintf(FERROR,"opendir(%s): %s\n",
-                       fname,strerror(errno));
+               rprintf(FERROR, "delete_file: opendir %s failed: %s\n",
+                       full_fname(fname), strerror(errno));
                return -1;
        }
 
-       for (di=readdir(d); di; di=readdir(d)) {
+       for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
                char *dname = d_name(di);
-               if (strcmp(dname,".")==0 ||
-                   strcmp(dname,"..")==0)
+               if (strcmp(dname,".") == 0
+                   || strcmp(dname,"..") == 0)
                        continue;
-               slprintf(buf, sizeof(buf), "%s/%s", fname, dname);
+               snprintf(buf, sizeof(buf), "%s/%s", fname, dname);
                if (verbose > 0)
                        rprintf(FINFO,"deleting %s\n", buf);
                if (delete_file(buf) != 0) {
                        closedir(d);
                        return -1;
                }
-       }       
+       }
+       if (errno) {
+               rprintf(FERROR, "delete_file: readdir %s failed: %s\n",
+                       full_fname(fname), strerror(errno));
+               closedir(d);
+               return -1;
+       }
 
        closedir(d);
-       
+
        if (do_rmdir(fname) != 0) {
-               rprintf(FERROR,"rmdir(%s) : %s\n", fname, strerror(errno));
+               rprintf(FERROR, "delete_file: rmdir %s failed: %s\n",
+                       full_fname(fname), strerror(errno));
                return -1;
        }
 
@@ -115,10 +121,10 @@ int delete_file(char *fname)
 
 static int is_in_group(gid_t gid)
 {
-#ifdef HAVE_GETGROUPS
+#ifdef GETGROUPS_T
        static gid_t last_in = (gid_t) -2, last_out;
        static int ngroups = -2;
-       static gid_t *gidset;
+       static GETGROUPS_T *gidset;
        int n;
 
        if (gid == last_in)
@@ -127,7 +133,7 @@ static int is_in_group(gid_t gid)
                /* treat failure (-1) as if not member of any group */
                ngroups = getgroups(0, 0);
                if (ngroups > 0) {
-                       gidset = (gid_t *) malloc(ngroups * sizeof(gid_t));
+                       gidset = new_array(GETGROUPS_T, ngroups);
                        ngroups = getgroups(ngroups, gidset);
                }
        }
@@ -148,31 +154,31 @@ static int is_in_group(gid_t gid)
 }
 
 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
-             int report)
+               int report)
 {
        int updated = 0;
        STRUCT_STAT st2;
        int change_uid, change_gid;
-       extern int am_daemon;
 
        if (dry_run) return 0;
 
        if (!st) {
                if (link_stat(fname,&st2) != 0) {
-                       rprintf(FERROR,"stat %s : %s\n",fname,strerror(errno));
+                       rprintf(FERROR, "stat %s failed: %s\n",
+                               full_fname(fname), strerror(errno));
                        return 0;
                }
                st = &st2;
        }
 
        if (preserve_times && !S_ISLNK(st->st_mode) &&
-           st->st_mtime != file->modtime) {
+           cmp_modtime(st->st_mtime, file->modtime) != 0) {
                /* don't complain about not setting times on directories
                   because some filesystems can't do it */
                if (set_modtime(fname,file->modtime) != 0 &&
                    !S_ISDIR(st->st_mode)) {
-                       rprintf(FERROR,"failed to set times on %s : %s\n",
-                               fname,strerror(errno));
+                       rprintf(FERROR, "failed to set times on %s: %s\n",
+                               full_fname(fname), strerror(errno));
                        return 0;
                } else {
                        updated = 1;
@@ -180,8 +186,8 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
        }
 
        change_uid = am_root && preserve_uid && st->st_uid != file->uid;
-       change_gid = !am_daemon && preserve_gid && file->gid != -1 \
-                               && st->st_gid != file->gid;
+       change_gid = preserve_gid && file->gid != (gid_t) -1 && \
+                               st->st_gid != file->gid;
        if (change_gid && !am_root) {
                /* enforce bsd-style group semantics: non-root can only
                    change to groups that the user is a member of */
@@ -193,25 +199,32 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
                              change_gid?file->gid:st->st_gid) != 0) {
                        /* shouldn't have attempted to change uid or gid
                             unless have the privilege */
-                       rprintf(FERROR,"chown %s : %s\n", fname,strerror(errno));
+                       rprintf(FERROR, "chown %s failed: %s\n",
+                               full_fname(fname), strerror(errno));
                        return 0;
                }
+               /* a lchown had been done - we have to re-stat if the
+                   destination had the setuid or setgid bits set due
+                   to the side effect of the chown call */
+               if (st->st_mode & (S_ISUID | S_ISGID)) {
+                       link_stat(fname, st);
+               }
                updated = 1;
        }
 
 #ifdef HAVE_CHMOD
-       if (preserve_perms && !S_ISLNK(st->st_mode) &&
-           (st->st_mode != file->mode || 
-            (updated && (file->mode & ~ACCESSPERMS)))) {
-               updated = 1;
-               if (do_chmod(fname,file->mode) != 0) {
-                       rprintf(FERROR,"failed to set permissions on %s : %s\n",
-                               fname,strerror(errno));
-                       return 0;
+       if (!S_ISLNK(st->st_mode)) {
+               if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
+                       updated = 1;
+                       if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) {
+                               rprintf(FERROR, "failed to set permissions on %s: %s\n",
+                                       full_fname(fname), strerror(errno));
+                               return 0;
+                       }
                }
        }
 #endif
-    
+
        if (verbose > 1 && report) {
                if (updated)
                        rprintf(FINFO,"%s\n",fname);
@@ -227,26 +240,6 @@ void sig_int(void)
        exit_cleanup(RERR_SIGNAL);
 }
 
-int make_backup(char *fname)
-{
-       char fnamebak[MAXPATHLEN];
-       if (strlen(fname) + strlen(backup_suffix) > (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) {
-               if (errno != ENOENT) {
-                       rprintf(FERROR,"rename %s %s : %s\n",fname,fnamebak,strerror(errno));
-                       return 0;
-               }
-       } else if (verbose > 1) {
-               rprintf(FINFO,"backed up %s to %s\n",fname,fnamebak);
-       }
-       return 1;
-}
-
 
 /* finish off a file transfer, renaming the file and setting the permissions
    and ownership */
@@ -256,26 +249,23 @@ void finish_transfer(char *fname, char *fnametmp, struct file_struct *file)
                return;
 
        /* move tmp file over real file */
-       if (do_rename(fnametmp,fname) != 0) {
+       if (robust_rename(fnametmp,fname) != 0) {
                if (errno == EXDEV) {
-                       /* rename failed on cross-filesystem link.  
+                       /* rename failed on cross-filesystem link.
                           Copy the file instead. */
-                       if (copy_file(fnametmp,fname, file->mode & ACCESSPERMS)) {
-                               rprintf(FERROR,"copy %s -> %s : %s\n",
-                                       fnametmp,fname,strerror(errno));
+                       if (copy_file(fnametmp,fname, file->mode & INITACCESSPERMS)) {
+                               rprintf(FERROR, "copy %s -> \"%s\": %s\n",
+                                       full_fname(fnametmp), fname,
+                                       strerror(errno));
                        } else {
                                set_perms(fname,file,NULL,0);
                        }
-                       do_unlink(fnametmp);
                } else {
-                       rprintf(FERROR,"rename %s -> %s : %s\n",
-                               fnametmp,fname,strerror(errno));
-                       do_unlink(fnametmp);
+                       rprintf(FERROR,"rename %s -> \"%s\": %s\n",
+                               full_fname(fnametmp), fname, strerror(errno));
                }
+               do_unlink(fnametmp);
        } else {
                set_perms(fname,file,NULL,0);
        }
 }
-
-
-