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-rw-r--r--ubi-utils/src/ubiupdatevol.c355
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diff --git a/ubi-utils/src/ubiupdatevol.c b/ubi-utils/src/ubiupdatevol.c
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+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ *
+ * 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.
+ */
+
+/*
+ * An utility to update UBI volumes.
+ *
+ * Authors: Frank Haverkamp
+ * Joshua W. Boyer
+ * Artem Bityutskiy
+ */
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <getopt.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#include <libubi.h>
+#include "common.h"
+
+#define PROGRAM_VERSION "1.1"
+#define PROGRAM_NAME "ubiupdatevol"
+
+struct args {
+ int truncate;
+ const char *node;
+ const char *img;
+ /* For deprecated -d and -B options handling */
+ int devn;
+ char dev_name[256];
+ int broken_update;
+ int size;
+ int use_stdin;
+};
+
+static struct args args = {
+ .devn = -1,
+};
+
+static const char *doc = PROGRAM_NAME " version " PROGRAM_VERSION
+ " - a tool to write data to UBI volumes.";
+
+static const char *optionsstr =
+"-t, --truncate truncate volume (wipe it out)\n"
+"-h, --help print help message\n"
+"-V, --version print program version\n\n"
+"-s, --size=<bytes> bytes in input, if not reading from file\n"
+"The following are compatibility options which are deprecated, do not use them\n"
+"-d, --devn=<devn> UBI device number - may be used instead of the UBI\n"
+" device node name in which case the utility assumes\n"
+" that the device node is \"/dev/ubi<devn>\"\n"
+"-B, --broken-update broken update, this is for testing";
+
+static const char *usage =
+"Usage: " PROGRAM_NAME " <UBI volume node file name> [-t] [-h] [-V] [--truncate] [--size=x] [--help]\n"
+"\t\t\t[--version] <image file>\n\n"
+"Example 1: " PROGRAM_NAME " /dev/ubi0_1 fs.img - write file \"fs.img\" to UBI volume /dev/ubi0_1\n"
+"Example 2: " PROGRAM_NAME " /dev/ubi0_1 -t - wipe out UBI volume /dev/ubi0_1";
+
+struct option long_options[] = {
+ { .name = "truncate", .has_arg = 0, .flag = NULL, .val = 't' },
+ { .name = "help", .has_arg = 0, .flag = NULL, .val = 'h' },
+ { .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' },
+ { .name = "size", .has_arg = 1, .flag = NULL, .val = 's' },
+ /* Deprecated -d and -B options */
+ { .name = "devn", .has_arg = 1, .flag = NULL, .val = 'd' },
+ { .name = "broken-update", .has_arg = 1, .flag = NULL, .val = 'B' },
+ { NULL, 0, NULL, 0}
+};
+
+static int parse_opt(int argc, char * const argv[])
+{
+ while (1) {
+ int key;
+ char *endp;
+
+ key = getopt_long(argc, argv, "n:th?Vd:s:", long_options, NULL);
+ if (key == -1)
+ break;
+
+ switch (key) {
+ case 't':
+ args.truncate = 1;
+ break;
+
+ case 's':
+ args.size = strtoul(optarg, &endp, 0);
+ if (*endp != '\0' || endp == optarg || args.size < 0)
+ return errmsg("bad size: " "\"%s\"", optarg);
+ break;
+
+ case 'h':
+ case '?':
+ fprintf(stderr, "%s\n\n", doc);
+ fprintf(stderr, "%s\n\n", usage);
+ fprintf(stderr, "%s\n", optionsstr);
+ exit(EXIT_SUCCESS);
+
+ case 'd':
+ /* Handle deprecated -d option */
+ warnmsg("-d is depricated and will be removed, do not use it");
+ args.devn = strtoul(optarg, &endp, 0);
+ if (*endp != '\0' || endp == optarg || args.devn < 0)
+ return errmsg("bad UBI device number: " "\"%s\"", optarg);
+ break;
+
+ case 'B':
+ /* Handle deprecated -B option */
+ warnmsg("-B is depricated and will be removed, do not use it");
+ args.broken_update = 1;
+ break;
+
+ case 'V':
+ fprintf(stderr, "%s\n", PROGRAM_VERSION);
+ exit(EXIT_SUCCESS);
+
+ case ':':
+ return errmsg("parameter is missing");
+
+ default:
+ fprintf(stderr, "Use -h for help\n");
+ return -1;
+ }
+ }
+
+ /* Handle deprecated -d option */
+ if (args.devn != -1) {
+ sprintf(args.dev_name, "/dev/ubi%d", args.devn);
+ args.node = args.dev_name;
+ } else {
+ if (optind == argc)
+ return errmsg("UBI device name was not specified (use -h for help)");
+ else if (optind != argc - 2 && !args.truncate)
+ return errmsg("specify UBI device name and image file name as first 2 "
+ "parameters (use -h for help)");
+ }
+
+ args.node = argv[optind];
+ args.img = argv[optind + 1];
+
+ if (args.img && args.truncate)
+ return errmsg("You can't truncate and specify an image (use -h for help)");
+
+ if (args.img && !args.truncate) {
+ if (strcmp(args.img, "-") == 0)
+ args.use_stdin = 1;
+ if (args.use_stdin && !args.size)
+ return errmsg("file size must be specified if input is stdin");
+ }
+
+ return 0;
+}
+
+static int truncate_volume(libubi_t libubi)
+{
+ int err, fd;
+
+ fd = open(args.node, O_RDWR);
+ if (fd == -1)
+ return sys_errmsg("cannot open \"%s\"", args.node);
+
+ err = ubi_update_start(libubi, fd, 0);
+ if (err) {
+ sys_errmsg("cannot truncate volume \"%s\"", args.node);
+ close(fd);
+ return -1;
+ }
+
+ close(fd);
+ return 0;
+}
+
+static int ubi_write(int fd, const void *buf, int len)
+{
+ int ret;
+
+ while (len) {
+ ret = write(fd, buf, len);
+ if (ret < 0) {
+ if (errno == EINTR) {
+ warnmsg("do not interrupt me!");
+ continue;
+ }
+ return sys_errmsg("cannot write %d bytes to volume \"%s\"",
+ len, args.node);
+ }
+
+ if (ret == 0)
+ return errmsg("cannot write %d bytes to volume \"%s\"", len, args.node);
+
+ len -= ret;
+ buf += ret;
+ }
+
+ return 0;
+}
+
+static int update_volume(libubi_t libubi, struct ubi_vol_info *vol_info)
+{
+ int err, fd, ifd;
+ long long bytes;
+ char *buf;
+
+ buf = malloc(vol_info->leb_size);
+ if (!buf)
+ return errmsg("cannot allocate %d bytes of memory", vol_info->leb_size);
+
+ if (!args.size) {
+ struct stat st;
+ err = stat(args.img, &st);
+ if (err < 0) {
+ errmsg("stat failed on \"%s\"", args.img);
+ goto out_free;
+ }
+
+ bytes = st.st_size;
+ } else
+ bytes = args.size;
+
+ if (bytes > vol_info->rsvd_bytes) {
+ errmsg("\"%s\" (size %lld) will not fit volume \"%s\" (size %lld)",
+ args.img, bytes, args.node, vol_info->rsvd_bytes);
+ goto out_free;
+ }
+
+ /* A hack to handle deprecated -B option */
+ if (args.broken_update)
+ bytes = 1;
+
+ fd = open(args.node, O_RDWR);
+ if (fd == -1) {
+ sys_errmsg("cannot open UBI volume \"%s\"", args.node);
+ goto out_free;
+ }
+
+ if (args.use_stdin)
+ ifd = STDIN_FILENO;
+ else {
+ ifd = open(args.img, O_RDONLY);
+ if (ifd == -1) {
+ sys_errmsg("cannot open \"%s\"", args.img);
+ goto out_close1;
+ }
+ }
+
+ err = ubi_update_start(libubi, fd, bytes);
+ if (err) {
+ sys_errmsg("cannot start volume \"%s\" update", args.node);
+ goto out_close;
+ }
+
+ while (bytes) {
+ int ret, to_copy = vol_info->leb_size;
+
+ if (to_copy > bytes)
+ to_copy = bytes;
+
+ ret = read(ifd, buf, to_copy);
+ if (ret <= 0) {
+ if (errno == EINTR) {
+ warnmsg("do not interrupt me!");
+ continue;
+ } else {
+ sys_errmsg("cannot read %d bytes from \"%s\"",
+ to_copy, args.img);
+ goto out_close;
+ }
+ }
+
+ err = ubi_write(fd, buf, ret);
+ if (err)
+ goto out_close;
+ bytes -= ret;
+ }
+
+ close(ifd);
+ close(fd);
+ free(buf);
+ return 0;
+
+out_close:
+ close(ifd);
+out_close1:
+ close(fd);
+out_free:
+ free(buf);
+ return -1;
+}
+
+int main(int argc, char * const argv[])
+{
+ int err;
+ libubi_t libubi;
+ struct ubi_vol_info vol_info;
+
+ err = parse_opt(argc, argv);
+ if (err)
+ return -1;
+
+ libubi = libubi_open(1);
+ if (libubi == NULL) {
+ sys_errmsg("cannot open libubi");
+ goto out_libubi;
+ }
+
+ err = ubi_node_type(libubi, args.node);
+ if (err == 1) {
+ errmsg("\"%s\" is an UBI device node, not an UBI volume node",
+ args.node);
+ goto out_libubi;
+ } else if (err < 0) {
+ errmsg("\"%s\" is not an UBI volume node", args.node);
+ goto out_libubi;
+ }
+
+ err = ubi_get_vol_info(libubi, args.node, &vol_info);
+ if (err) {
+ sys_errmsg("cannot get information about UBI volume \"%s\"",
+ args.node);
+ goto out_libubi;
+ }
+
+ if (args.truncate)
+ err = truncate_volume(libubi);
+ else
+ err = update_volume(libubi, &vol_info);
+ if (err)
+ goto out_libubi;
+
+ libubi_close(libubi);
+ return 0;
+
+out_libubi:
+ libubi_close(libubi);
+ return -1;
+}
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