* Copyright (C) 1996-2000 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2003-2008 Wayne Davison
+ * Copyright (C) 2003-2009 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
extern int max_delete;
extern int force_delete;
extern int one_file_system;
+extern int skipped_deletes;
extern struct stats stats;
extern dev_t filesystem_dev;
extern mode_t orig_umask;
extern uid_t our_uid;
-extern char *backup_dir;
-extern char *backup_suffix;
-extern int backup_suffix_len;
extern char *basis_dir[MAX_BASIS_DIRS+1];
extern struct file_list *cur_flist, *first_flist, *dir_flist;
extern struct filter_list_struct daemon_filter_list;
-int ignore_perishable = 0;
-int non_perishable_cnt = 0;
int maybe_ATTRS_REPORT = 0;
static dev_t dev_zero;
-static int skipped_deletes = 0;
static int deldelay_size = 0, deldelay_cnt = 0;
static char *deldelay_buf = NULL;
static int deldelay_fd = -1;
static int need_retouch_dir_perms;
static const char *solo_file = NULL;
-/* For calling delete_item() and delete_dir_contents(). */
-#define DEL_NO_UID_WRITE (1<<0) /* file/dir has our uid w/o write perm */
-#define DEL_RECURSE (1<<1) /* if dir, delete all contents */
-#define DEL_DIR_IS_EMPTY (1<<2) /* internal delete_FUNCTIONS use only */
-#define DEL_FOR_FILE (1<<3) /* making room for a replacement file */
-#define DEL_FOR_DIR (1<<4) /* making room for a replacement dir */
-#define DEL_FOR_SYMLINK (1<<5) /* making room for a replacement symlink */
-#define DEL_FOR_DEVICE (1<<6) /* making room for a replacement device */
-#define DEL_FOR_SPECIAL (1<<7) /* making room for a replacement special */
-
-#define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
-
enum nonregtype {
TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
};
-enum delret {
- DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
-};
-
/* Forward declarations. */
-static enum delret delete_dir_contents(char *fname, uint16 flags);
#ifdef SUPPORT_HARD_LINKS
static void handle_skipped_hlink(struct file_struct *file, int itemizing,
enum logcode code, int f_out);
#endif
-static int is_backup_file(char *fn)
-{
- int k = strlen(fn) - backup_suffix_len;
- return k > 0 && strcmp(fn+k, backup_suffix) == 0;
-}
-
-/* Delete a file or directory. If DEL_RECURSE is set in the flags, this will
- * delete recursively.
- *
- * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
- * a directory! (The buffer is used for recursion, but returned unchanged.)
- */
-static enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
-{
- enum delret ret;
- char *what;
- int ok;
-
- if (DEBUG_GTE(DEL, 2)) {
- rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
- fbuf, (int)mode, (int)flags);
- }
-
- if (flags & DEL_NO_UID_WRITE)
- do_chmod(fbuf, mode | S_IWUSR);
-
- if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
- int save_uid_ndx = uid_ndx;
- /* This only happens on the first call to delete_item() since
- * delete_dir_contents() always calls us w/DEL_DIR_IS_EMPTY. */
- if (!uid_ndx)
- uid_ndx = ++file_extra_cnt;
- ignore_perishable = 1;
- /* If DEL_RECURSE is not set, this just reports emptiness. */
- ret = delete_dir_contents(fbuf, flags);
- ignore_perishable = 0;
- if (!save_uid_ndx) {
- --file_extra_cnt;
- uid_ndx = 0;
- }
- if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
- goto check_ret;
- /* OK: try to delete the directory. */
- }
-
- if (!(flags & DEL_MAKE_ROOM) && max_delete >= 0 && stats.deleted_files >= max_delete) {
- skipped_deletes++;
- return DR_AT_LIMIT;
- }
-
- if (S_ISDIR(mode)) {
- what = "rmdir";
- ok = do_rmdir(fbuf) == 0;
- } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
- what = "make_backup";
- ok = make_backup(fbuf);
- } else {
- what = "unlink";
- ok = robust_unlink(fbuf) == 0;
- }
-
- if (ok) {
- if (!(flags & DEL_MAKE_ROOM)) {
- log_delete(fbuf, mode);
- stats.deleted_files++;
- if (S_ISREG(mode)) {
- /* Nothing more to count */
- } else if (S_ISDIR(mode))
- stats.deleted_dirs++;
-#ifdef SUPPORT_LINKS
- else if (S_ISLNK(mode))
- stats.deleted_symlinks++;
-#endif
- else if (IS_DEVICE(mode))
- stats.deleted_symlinks++;
- else
- stats.deleted_specials++;
- }
- ret = DR_SUCCESS;
- } else {
- if (S_ISDIR(mode) && errno == ENOTEMPTY) {
- rprintf(FINFO, "cannot delete non-empty directory: %s\n",
- fbuf);
- ret = DR_NOT_EMPTY;
- } else if (errno != ENOENT) {
- rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
- what, fbuf);
- ret = DR_FAILURE;
- } else
- ret = DR_SUCCESS;
- }
-
- check_ret:
- if (ret != DR_SUCCESS && flags & DEL_MAKE_ROOM) {
- const char *desc;
- switch (flags & DEL_MAKE_ROOM) {
- case DEL_FOR_FILE: desc = "regular file"; break;
- case DEL_FOR_DIR: desc = "directory"; break;
- case DEL_FOR_SYMLINK: desc = "symlink"; break;
- case DEL_FOR_DEVICE: desc = "device file"; break;
- case DEL_FOR_SPECIAL: desc = "special file"; break;
- default: exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE */
- }
- rprintf(FERROR_XFER, "could not make way for new %s: %s\n",
- desc, fbuf);
- }
- return ret;
-}
-
-/* The directory is about to be deleted: if DEL_RECURSE is given, delete all
- * its contents, otherwise just checks for content. Returns DR_SUCCESS or
- * DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
- * buffer is used for recursion, but returned unchanged.)
- */
-static enum delret delete_dir_contents(char *fname, uint16 flags)
-{
- struct file_list *dirlist;
- enum delret ret;
- unsigned remainder;
- void *save_filters;
- int j, dlen;
- char *p;
-
- if (DEBUG_GTE(DEL, 3)) {
- rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
- fname, flags);
- }
-
- dlen = strlen(fname);
- save_filters = push_local_filters(fname, dlen);
-
- non_perishable_cnt = 0;
- dirlist = get_dirlist(fname, dlen, 0);
- ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
-
- if (!dirlist->used)
- goto done;
-
- if (!(flags & DEL_RECURSE)) {
- ret = DR_NOT_EMPTY;
- goto done;
- }
-
- p = fname + dlen;
- if (dlen != 1 || *fname != '/')
- *p++ = '/';
- remainder = MAXPATHLEN - (p - fname);
-
- /* We do our own recursion, so make delete_item() non-recursive. */
- flags = (flags & ~(DEL_RECURSE|DEL_MAKE_ROOM|DEL_NO_UID_WRITE))
- | DEL_DIR_IS_EMPTY;
-
- for (j = dirlist->used; j--; ) {
- struct file_struct *fp = dirlist->files[j];
-
- if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
- if (DEBUG_GTE(DEL, 1)) {
- rprintf(FINFO,
- "mount point, %s, pins parent directory\n",
- f_name(fp, NULL));
- }
- ret = DR_NOT_EMPTY;
- continue;
- }
-
- strlcpy(p, fp->basename, remainder);
- if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
- do_chmod(fname, fp->mode | S_IWUSR);
- /* Save stack by recursing to ourself directly. */
- if (S_ISDIR(fp->mode)) {
- if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
- ret = DR_NOT_EMPTY;
- }
- if (delete_item(fname, fp->mode, flags) != DR_SUCCESS)
- ret = DR_NOT_EMPTY;
- }
-
- fname[dlen] = '\0';
-
- done:
- flist_free(dirlist);
- pop_local_filters(save_filters);
-
- if (ret == DR_NOT_EMPTY) {
- rprintf(FINFO, "cannot delete non-empty directory: %s\n",
- fname);
- }
- return ret;
-}
-
static int start_delete_delay_temp(void)
{
char fnametmp[MAXPATHLEN];
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff