1 // SPDX-License-Identifier: GPL-2.0
26 #define MIN(a, b) ((a) < (b) ? (a) : (b))  macro
29 #define padlen(_off, _align) (((_align) - ((_off) & ((_align) - 1))) % (_align))
31 /* zero-padding the filename field for data alignment is limited by PATH_MAX */
48 	ssize_t len;  in push_buf()  local
50 	len = write(outfd, name, name_len);  in push_buf()
51 	if (len != name_len)  in push_buf()
52 		return -1;  in push_buf()
60 	ssize_t len = 0;  in push_pad()  local
66 		len = write(outfd, padding, padlen);  in push_pad()
67 	if (len != padlen)  in push_pad()
68 		return -1;  in push_pad()
76 	ssize_t len;  in push_rest()  local
78 	len = write(outfd, name, name_len);  in push_rest()
79 	if (len != name_len)  in push_rest()
80 		return -1;  in push_rest()
89 	int len;  in cpio_trailer()  local
92 	len = dprintf(outfd, "%s%08X%08X%08lX%08lX%08X%08lX"  in cpio_trailer()
108 	offset += len;  in cpio_trailer()
110 	if (len != CPIO_HDR_LEN ||  in cpio_trailer()
113 		return -1;  in cpio_trailer()
116 		return -1;  in cpio_trailer()
124 	int len;  in cpio_mkslink()  local
131 	len = dprintf(outfd, "%s%08X%08X%08lX%08lX%08X%08lX"  in cpio_mkslink()
147 	offset += len;  in cpio_mkslink()
149 	if (len != CPIO_HDR_LEN ||  in cpio_mkslink()
154 		return -1;  in cpio_mkslink()
167 	int rc = -1;  in cpio_mkslink_line()
181 	int len;  in cpio_mkgeneric()  local
188 	len = dprintf(outfd, "%s%08X%08X%08lX%08lX%08X%08lX"  in cpio_mkgeneric()
204 	offset += len;  in cpio_mkgeneric()
206 	if (len != CPIO_HDR_LEN ||  in cpio_mkgeneric()
208 		return -1;  in cpio_mkgeneric()
245 	int rc = -1;  in cpio_mkgeneric_line()
275 		       unsigned int maj, unsigned int min)  in cpio_mknod()  argument
277 	int len;  in cpio_mknod()  local
289 	len = dprintf(outfd, "%s%08X%08X%08lX%08lX%08X%08lX"  in cpio_mknod()
302 		min,			/* rminor */  in cpio_mknod()
305 	offset += len;  in cpio_mknod()
307 	if (len != CPIO_HDR_LEN ||  in cpio_mknod()
309 		return -1;  in cpio_mknod()
322 	unsigned int min;  in cpio_mknod_line()  local
323 	int rc = -1;  in cpio_mknod_line()
326 			 name, &mode, &uid, &gid, &dev_type, &maj, &min)) {  in cpio_mknod_line()
330 	rc = cpio_mknod(name, mode, uid, gid, dev_type, maj, min);  in cpio_mknod_line()
340 		size_t i, this_size = MIN(size, sizeof(filebuf));  in cpio_mkfile_csum()
344 			return -1;  in cpio_mkfile_csum()
349 		size -= this_read;  in cpio_mkfile_csum()
353 		return -1;  in cpio_mkfile_csum()
364 	int file, retval, len;  in cpio_mkfile()  local
365 	int rc = -1;  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()
452 		offset += len;  in cpio_mkfile()
454 		if (len != CPIO_HDR_LEN ||  in cpio_mkfile()
465 				size -= this_read;  in cpio_mkfile()
472 			size_t this_size = MIN(size, sizeof(filebuf));  in cpio_mkfile()
485 			size -= this_read;  in cpio_mkfile()
528 	int rc = -1;  in cpio_mkfile_line()
537 		int len;  in cpio_mkfile_line()  local
554 			len = strlen(name) + 1;  in cpio_mkfile_line()
555 			memcpy(dname + dname_len, name, len);  in cpio_mkfile_line()
556 			dname_len += len;  in cpio_mkfile_line()
573 		"\t%s [-t <timestamp>] [-c] [-o <output_file>] [-a <data_align>] <cpio_list>\n"  in usage()
581 		"nod <name> <mode> <uid> <gid> <dev_type> <maj> <min>\n"  in usage()
595 		"<min>        minor number of nod\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()
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()
732 			/* comment - skip to next line */  in main()
740 			ec = -1;  in main()
758 			ec = -1;  in main()