1 // SPDX-License-Identifier: GPL-2.0
24 #define xstr(s) #s  argument
25 #define str(s) xstr(s)  argument
29 #define padlen(_off, _align) (((_align) - ((_off) & ((_align) - 1))) % (_align))
31 /* zero-padding the filename field for data alignment is limited by PATH_MAX */
52 		return -1;  in push_buf()
68 		return -1;  in push_pad()
80 		return -1;  in push_rest()
92 	len = dprintf(outfd, "%s%08X%08X%08lX%08lX%08X%08lX"  in cpio_trailer()
96 		0,			/* mode */  in cpio_trailer()
113 		return -1;  in cpio_trailer()
116 		return -1;  in cpio_trailer()
122 			 unsigned int mode, uid_t uid, gid_t gid)  in cpio_mkslink()  argument
131 	len = dprintf(outfd, "%s%08X%08X%08lX%08lX%08X%08lX"  in cpio_mkslink()
135 		S_IFLNK | mode,		/* mode */  in cpio_mkslink()
154 		return -1;  in cpio_mkslink()
164 	unsigned int mode;  in cpio_mkslink_line()  local
167 	int rc = -1;  in cpio_mkslink_line()
169 …if (5 != sscanf(line, "%" str(PATH_MAX) "s %" str(PATH_MAX) "s %o %d %d", name, target, &mode, &ui…  in cpio_mkslink_line()
170 		fprintf(stderr, "Unrecognized dir format '%s'", line);  in cpio_mkslink_line()
173 	rc = cpio_mkslink(name, target, mode, uid, gid);  in cpio_mkslink_line()
178 static int cpio_mkgeneric(const char *name, unsigned int mode,  in cpio_mkgeneric()  argument
188 	len = dprintf(outfd, "%s%08X%08X%08lX%08lX%08X%08lX"  in cpio_mkgeneric()
192 		mode,			/* mode */  in cpio_mkgeneric()
208 		return -1;  in cpio_mkgeneric()
221 	mode_t mode;  member
227 		.mode = S_IFDIR
231 		.mode = S_IFIFO
235 		.mode = S_IFSOCK
242 	unsigned int mode;  in cpio_mkgeneric_line()  local
245 	int rc = -1;  in cpio_mkgeneric_line()
247 	if (4 != sscanf(line, "%" str(PATH_MAX) "s %o %d %d", name, &mode, &uid, &gid)) {  in cpio_mkgeneric_line()
248 		fprintf(stderr, "Unrecognized %s format '%s'",  in cpio_mkgeneric_line()
252 	mode |= generic_type_table[gt].mode;  in cpio_mkgeneric_line()
253 	rc = cpio_mkgeneric(name, mode, uid, gid);  in cpio_mkgeneric_line()
273 static int cpio_mknod(const char *name, unsigned int mode,  in cpio_mknod()  argument
281 		mode |= S_IFBLK;  in cpio_mknod()
283 		mode |= S_IFCHR;  in cpio_mknod()
289 	len = dprintf(outfd, "%s%08X%08X%08lX%08lX%08X%08lX"  in cpio_mknod()
293 		mode,			/* mode */  in cpio_mknod()
309 		return -1;  in cpio_mknod()
317 	unsigned int mode;  in cpio_mknod_line()  local
323 	int rc = -1;  in cpio_mknod_line()
325 	if (7 != sscanf(line, "%" str(PATH_MAX) "s %o %d %d %c %u %u",  in cpio_mknod_line()
326 			 name, &mode, &uid, &gid, &dev_type, &maj, &min)) {  in cpio_mknod_line()
327 		fprintf(stderr, "Unrecognized nod format '%s'", line);  in cpio_mknod_line()
330 	rc = cpio_mknod(name, mode, uid, gid, dev_type, maj, min);  in cpio_mknod_line()
344 			return -1;  in cpio_mkfile_csum()
349 		size -= this_read;  in cpio_mkfile_csum()
353 		return -1;  in cpio_mkfile_csum()
359 			unsigned int mode, uid_t uid, gid_t gid,  in cpio_mkfile()  argument
365 	int rc = -1;  in cpio_mkfile()
372 	mode |= S_IFREG;  in cpio_mkfile()
376 		fprintf (stderr, "File %s could not be opened for reading\n", location);  in cpio_mkfile()
382 		fprintf(stderr, "File %s could not be stat()'ed\n", location);  in cpio_mkfile()
391 			fprintf(stderr, "%s: Timestamp exceeds maximum cpio timestamp, clipping.\n",  in cpio_mkfile()
397 			fprintf(stderr, "%s: Timestamp negative, clipping.\n",  in cpio_mkfile()
404 		fprintf(stderr, "%s: Size exceeds maximum cpio file size\n",  in cpio_mkfile()
410 		fprintf(stderr, "Failed to checksum file %s\n", location);  in cpio_mkfile()
430 					"%s: best-effort alignment %u missed\n",  in cpio_mkfile()
436 		len = dprintf(outfd, "%s%08X%08X%08lX%08lX%08X%08lX"  in cpio_mkfile()
440 			mode,			/* mode */  in cpio_mkfile()
465 				size -= this_read;  in cpio_mkfile()
476 				fprintf(stderr, "Can not read %s file\n", location);  in cpio_mkfile()
485 			size -= this_read;  in cpio_mkfile()
510 		snprintf(expanded, sizeof expanded, "%s%s%s",  in cpio_replace_env()
523 	unsigned int mode;  in cpio_mkfile_line()  local
528 	int rc = -1;  in cpio_mkfile_line()
530 	if (5 > sscanf(line, "%" str(PATH_MAX) "s %" str(PATH_MAX)  in cpio_mkfile_line()
531 				"s %o %d %d %n",  in cpio_mkfile_line()
532 				name, location, &mode, &uid, &gid, &end)) {  in cpio_mkfile_line()
533 		fprintf(stderr, "Unrecognized file format '%s'", line);  in cpio_mkfile_line()
551 			if (sscanf(line + end, "%" str(PATH_MAX) "s %n",  in cpio_mkfile_line()
564 	                 mode, uid, gid, nlinks);  in cpio_mkfile_line()
573 		"\t%s [-t <timestamp>] [-c] [-o <output_file>] [-a <data_align>] <cpio_list>\n"  in usage()
579 		"file <name> <location> <mode> <uid> <gid> [<hard links>]\n"  in usage()
580 		"dir <name> <mode> <uid> <gid>\n"  in usage()
581 		"nod <name> <mode> <uid> <gid> <dev_type> <maj> <min>\n"  in usage()
582 		"slink <name> <target> <mode> <uid> <gid>\n"  in usage()
583 		"pipe <name> <mode> <uid> <gid>\n"  in usage()
584 		"sock <name> <mode> <uid> <gid>\n"  in usage()
590 		"<mode>       mode/permissions of the file\n"  in usage()
610 		"-c: calculate and store 32-bit checksums for file data.\n"  in usage()
612 		"<data_align>: attempt to align file data by zero-padding the\n"  in usage()
614 		"Alignment is best-effort; PATH_MAX limits filename padding.\n",  in usage()
659 		if (opt == -1)  in main()
665 				fprintf(stderr, "Invalid timestamp: %s\n",  in main()
680 				fprintf(stderr, "failed to open %s\n", optarg);  in main()
688 				fprintf(stderr, "Invalid data_align: %s\n",  in main()
702 	 * Timestamps after 2106-02-07 06:28:15 UTC have an ascii hex time_t  in main()
711 	if (argc - optind != 1) {  in main()
716 	if (!strcmp(filename, "-"))  in main()
719 		fprintf(stderr, "ERROR: unable to open '%s': %s\n\n",  in main()
732 			/* comment - skip to next line */  in main()
738 				"ERROR: incorrect format, could not locate file type line %d: '%s'\n",  in main()
740 			ec = -1;  in main()
756 				"ERROR: incorrect format, newline required line %d: '%s'\n",  in main()
758 			ec = -1;  in main()
773 			fprintf(stderr, "unknown file type line %d: '%s'\n",  in main()