summaryrefslogtreecommitdiff
path: root/ubi-utils/src/ubiupdatevol.c
diff options
context:
space:
mode:
Diffstat (limited to 'ubi-utils/src/ubiupdatevol.c')
-rw-r--r--ubi-utils/src/ubiupdatevol.c336
1 files changed, 336 insertions, 0 deletions
diff --git a/ubi-utils/src/ubiupdatevol.c b/ubi-utils/src/ubiupdatevol.c
new file mode 100644
index 0000000..807b961
--- /dev/null
+++ b/ubi-utils/src/ubiupdatevol.c
@@ -0,0 +1,336 @@
+/*
+ * 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.
+ *
+ * Author: Frank Haverkamp
+ * Joshua W. Boyer
+ *
+ * 1.0 Reworked the userinterface to use argp.
+ * 1.1 Removed argp parsing because we want to use uClib.
+ * 1.2 Minor cleanups
+ * 1.3 Use a different libubi
+ */
+
+#include <errno.h>
+#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 <config.h>
+#include <libubi.h>
+
+#define PROGRAM_VERSION "1.3"
+
+#define MAXPATH 1024
+#define BUFSIZE 128 * 1024
+#define MIN(x,y) ((x)<(y)?(x):(y))
+
+struct args {
+ int devn;
+ int vol_id;
+ int truncate;
+ int broken_update;
+ int bufsize;
+
+ /* special stuff needed to get additional arguments */
+ char *arg1;
+ char **options; /* [STRING...] */
+};
+
+static struct args myargs = {
+ .devn = -1,
+ .vol_id = -1,
+ .truncate = 0,
+ .broken_update = 0,
+ .bufsize = BUFSIZE,
+ .arg1 = NULL,
+ .options = NULL,
+};
+
+static int verbose = 0;
+
+static char doc[] = "\nVersion: " PROGRAM_VERSION "\n"
+ "ubiupdatevol - write to UBI Volume.\n";
+
+static const char *optionsstr =
+" -B, --broken-update broken update, this is for testing\n"
+" -d, --devn=<devn> UBI device\n"
+" -n, --vol_id=<volume id> UBI volume id\n"
+" -t, --truncate truncate volume\n"
+" -?, --help Give this help list\n"
+" --usage Give a short usage message\n"
+" -V, --version Print program version\n";
+
+static const char *usage =
+"Usage: ubiupdatevol [-Bt?V] [-d <devn>] [-n <volume id>] [--broken-update]\n"
+" [--devn=<devn>] [--vol_id=<volume id>] [--truncate] [--help]\n"
+" [--usage] [--version] <image file>\n";
+
+struct option long_options[] = {
+ { .name = "broken-update", .has_arg = 0, .flag = NULL, .val = 'B' },
+ { .name = "devn", .has_arg = 1, .flag = NULL, .val = 'd' },
+ { .name = "vol_id", .has_arg = 1, .flag = NULL, .val = 'n' },
+ { .name = "truncate", .has_arg = 0, .flag = NULL, .val = 't' },
+ { .name = "help", .has_arg = 0, .flag = NULL, .val = '?' },
+ { .name = "usage", .has_arg = 0, .flag = NULL, .val = 0 },
+ { .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' },
+ { NULL, 0, NULL, 0}
+};
+
+/*
+ * @brief Parse the arguments passed into the test case.
+ */
+static int
+parse_opt(int argc, char **argv, struct args *args)
+{
+ while (1) {
+ int key;
+
+ key = getopt_long(argc, argv, "Bd:n:t?V", long_options, NULL);
+ if (key == -1)
+ break;
+
+ switch (key) {
+ case 'v': /* --verbose=<level> */
+ verbose = strtoul(optarg, (char **)NULL, 0);
+ break;
+
+ case 'n': /* --vol_id=<volume id> */
+ args->vol_id = strtol(optarg, (char **)NULL, 0);
+ break;
+
+ case 'd': /* --devn=<device number> */
+ args->devn = strtol(optarg, (char **)NULL, 0);
+ break;
+
+ case 'b': /* --bufsize=<bufsize> */
+ args->bufsize = strtol(optarg, (char **)NULL, 0);
+ if (args->bufsize <= 0)
+ args->bufsize = BUFSIZE;
+ break;
+
+ case 't': /* --truncate */
+ args->truncate = 1;
+ break;
+
+ case 'B': /* --broken-update */
+ args->broken_update = 1;
+ break;
+
+ case '?': /* help */
+ fprintf(stderr, "Usage: "
+ "ubiupdatevol [OPTION...] <image file>\n%s%s"
+ "\nReport bugs to %s\n",
+ doc, optionsstr, PACKAGE_BUGREPORT);
+ exit(EXIT_SUCCESS);
+ break;
+
+ case 'V':
+ fprintf(stderr, "%s\n", PROGRAM_VERSION);
+ exit(0);
+ break;
+
+ default:
+ fprintf(stderr, "%s", usage);
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ if (optind < argc) {
+ /* only one additional argument required */
+ args->arg1 = argv[optind++];
+ }
+ return 0;
+}
+
+/**
+ * @bytes bytes must be always 0, if not 0 this is a testcase for a
+ * broken volume update where data is promissed to be written, but for
+ * some reason nothing is written. The volume is unusable after this.
+ */
+static int
+ubi_truncate_volume(struct args *args, int64_t bytes,libubi_t libubi)
+{
+ int rc, ofd;
+ char path[MAXPATH];
+ int old_errno;
+
+ snprintf(path, MAXPATH-1, "/dev/ubi%d_%d", args->devn, args->vol_id);
+ path[MAXPATH-1] = '\0';
+
+ ofd = open(path, O_RDWR);
+ if (ofd < 0) {
+ fprintf(stderr, "Cannot open volume %s\n", path);
+ exit(EXIT_FAILURE);
+ }
+ rc = ubi_update_start(libubi, ofd, bytes);
+ old_errno = errno;
+ if (rc < 0) {
+ perror("UBI volume update ioctl");
+ fprintf(stderr, " rc=%d errno=%d\n", rc, old_errno);
+ exit(EXIT_FAILURE);
+ }
+ close(ofd);
+ return 0;
+}
+
+static ssize_t ubi_write(int fd, const void *buf, size_t count)
+{
+ int rc;
+ int len = count;
+
+ while (len) {
+ rc = write(fd, buf, len);
+ if (rc == -1) {
+ if (errno == EINTR)
+ continue; /* try again */
+ perror("write error");
+ return rc;
+ }
+
+ len -= rc;
+ buf += rc;
+ }
+ return count;
+}
+
+static int
+ubi_update_volume(struct args *args, libubi_t libubi)
+{
+ int rc, ofd;
+ FILE *ifp = NULL;
+ struct stat st;
+ int size = 0;
+ char *fname = args->arg1;
+ char path[MAXPATH];
+ char *buf;
+ int64_t bytes = 0;
+ int old_errno;
+
+ buf = malloc(args->bufsize);
+ if (!buf) {
+ perror("Out of memory");
+ exit(EXIT_FAILURE);
+ }
+
+ if (fname == NULL) {
+ fprintf(stderr, "Please specify an existing image file.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ rc = stat(fname, &st);
+ if (rc < 0) {
+ fprintf(stderr, "Cannot stat input file %s\n", fname);
+ exit(EXIT_FAILURE);
+ }
+ bytes = size = st.st_size;
+
+ ifp = fopen(fname, "r");
+ if (!ifp)
+ exit(EXIT_FAILURE);
+
+ snprintf(path, MAXPATH-1, "/dev/ubi%d_%d", args->devn, args->vol_id);
+ path[MAXPATH-1] = '\0';
+
+ ofd = open(path, O_RDWR);
+ if (ofd < 0) {
+ fprintf(stderr, "Cannot open UBI volume %s\n", path);
+ exit(EXIT_FAILURE);
+ }
+
+ rc = ubi_update_start(libubi, ofd, bytes);
+ old_errno = errno;
+ if (rc < 0) {
+ perror("UBI volume update ioctl");
+ fprintf(stderr, " rc=%d errno=%d\n", rc, old_errno);
+ exit(EXIT_FAILURE);
+ }
+
+ while (size > 0) {
+ ssize_t tocopy = MIN(args->bufsize, size);
+
+ rc = fread(buf, tocopy, 1, ifp);
+ if (rc != 1) {
+ perror("Could not read everything.");
+ exit(EXIT_FAILURE);
+ }
+
+ rc = ubi_write(ofd, buf, tocopy);
+ old_errno = errno;
+ if (rc != tocopy) {
+ perror("Could not write to device");
+ fprintf(stderr, " rc=%d errno=%d\n", rc, old_errno);
+ exit(EXIT_FAILURE);
+ }
+ size -= tocopy;
+ }
+
+ free(buf);
+ fclose(ifp);
+ rc = close(ofd);
+ if (rc != 0) {
+ perror("UBI volume close failed");
+ exit(EXIT_FAILURE);
+ }
+ return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+ int rc;
+ libubi_t libubi;
+
+ parse_opt(argc, argv, &myargs);
+
+ libubi = libubi_open();
+ if (libubi == NULL) {
+ perror("Cannot open libubi");
+ return -1;
+ }
+
+ if (myargs.truncate) {
+ rc = ubi_truncate_volume(&myargs, 0LL, libubi);
+ if (rc < 0)
+ goto out_libubi;
+ }
+ else if (myargs.broken_update) {
+ rc = ubi_truncate_volume(&myargs, 1LL, libubi);
+ if (rc < 0)
+ goto out_libubi;
+ } else {
+ rc = ubi_update_volume(&myargs, libubi);
+ if (rc < 0)
+ goto out_libubi;
+ }
+
+ libubi_close(libubi);
+ return 0;
+
+out_libubi:
+ libubi_close(libubi);
+ return -1;
+}