backup/restore/restore.c

3  * Use is subject to license terms.
18 /* undef MAXNAMLEN to prevent compiler warnings about redef in dirent.h */
106  * This is used by the 'i' option to undo previous requests made by addfile.
138  * other files in them which need to be moved out first. As
139  * directories to be deleted are found, they are put on the
159 	vprintf(stdout, gettext("Mark entries to be removed.\n"));
190  *	KEEP - entries that are to be left alone.
191  *	NEW - new entries to be added.
193  *	LINK - new links to be added.
218 	 * Check to see if the file is on the tape.
223 	 * Check to see if the name exists, and if the name is a link.
238 	 * Check to see if the inode exists, and if one of its links
239 	 * corresponds to the name (if one was found).
247 				 * Need to set the NEW flag on the hard link
269 	 * correspond to the same file, then both the inode that has
270 	 * been found and the inode corresponding to the name that
271 	 * has been found need to be renamed. The current pathname
273 	 * all files to be deleted have already been removed, the
301 	 * a name and inode are found that correspond to different files.
308 	 * Mark it as KEEP so that other links to the inode can be
321 	 * corresponding to a different file in the previous dump.
322 	 * Since all files to be deleted have already been removed,
345 	 * Add it to the file system, and request its extraction.
365 	 * link to the file. Hard links to directories are not
366 	 * permitted, and are either deleted or converted to
368 	 * a request is made to extract it.
389 			    "deleted hard link %s to directory %s\n"),
401 	 * A previously known file which is to be updated.
423 	 * that we need to rename, so we delete it from the symbol
424 	 * table, and put it on the list to be deleted eventually.
425 	 * Conversely if a directory is to be created, it must be
436 			/* changing from leaf to node */
442 			/* changing from node to leaf */
457 	 * A hard link to a directory that has been removed.
580  *	N is the number of directory entries to be removed.
616  * This is the routine used to extract files for the 'r' command.
642 		 * the lost files must have been due to a tape read error,
646 		 * sooner.  Due to the e_flags manipulation, lowerbnd()
686 		 * If the file is to be extracted, then the old file must
688 		 * to another (eg "file" to "character special"). But we
689 		 * also need to preserve any existing extended attributes;
712 		 * as to simplify the amount of work required by the
725  * This is the routine used to extract files for the 'x' and 'i' commands.
753 		 * Check to see if any files remain to be extracted
758 		 * If a map of inode numbers to tape volumes is
759 		 * available, then select the next volume to be read.
802 		 * Since we only attempt to extract files listed in the
803 		 * dump map, the lost files must have been due to a tape
856 	char *to, *from;
864 		to = savename(myname(ep));
874 						from, to, strerror(saverr));
880 				(void) lf_linkit(to, from, SYMLINK);
882 				(void) lf_linkit(to, from, HARDLINK);
891 		freename(to);
897  * We do this to insure that all the requested work was done, and
962  * themselves are assumed to be removed automatically when the
986  * Move all the extended attributes associated with orig to
994 	char *to, *from;
1003 		/* no attributes to move */
1014 		/* no attributes to move */
1028 	resolve(targ, &tfd, &to);
1029 	if ((tofd = openat64(tfd, to, O_RDONLY|O_NONBLOCK)) == -1 ||
1031 		fprintf(stderr, gettext("%s: cannot create attributes: "), to);
1041 	gettext("%s: cannot allocate DIR structure to attribute directory: "),