[MTD] UBI: Removed automake, autoconf, added ubi userspace headers.

Signed-off-by: Frank Haverkamp <haver@vnet.ibm.com>

1 files changed, 352 insertions, 0 deletions

diff --git a/ubi-utils/src/ubiupdatevol.c b/ubi-utils/src/ubiupdatevol.c
new file mode 100644
index 0000000..28e1e8f
--- /dev/null
+++ b/ubi-utils/src/ubiupdatevol.c
@@ -0,0 +1,352 @@
+/*
+ * 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.
+ *
+ * Author: Frank Haverkamp
+ *
+ * An utility to update UBI volumes.
+ */
+
+#include <config.h>
+
+#include <argp.h>
+#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/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <libubi.h>
+
+#define MAXPATH		1024
+#define BUFSIZE		128 * 1024
+#define MIN(x,y)	((x)<(y)?(x):(y))
+
+struct args {
+	int device;
+	int volume;
+	int truncate;
+	int broken_update;
+	int bufsize;
+
+	/* special stuff needed to get additional arguments */
+	char *arg1;
+	char **options;		/* [STRING...] */
+};
+
+static struct args myargs = {
+	.device = -1,
+	.volume = -1,
+	.truncate = 0,
+	.broken_update = 0,
+	.bufsize = BUFSIZE,
+	.arg1 = NULL,
+	.options = NULL,
+};
+
+static int verbose = 0;
+
+static error_t parse_opt (int key, char *arg, struct argp_state *state);
+
+const char *argp_program_bug_address = PACKAGE_BUGREPORT;
+
+static char doc[] = "\nVersion: " PACKAGE_VERSION "\n\t"
+	BUILD_OS" "BUILD_CPU" at "__DATE__" "__TIME__"\n"
+	"\nWrite to UBI Volume.\n";
+
+static struct argp_option options[] = {
+	{ .name = "device",
+	  .key = 'd',
+	  .arg = "<device number>",
+	  .flags = 0,
+	  .doc = "UBI device",
+	  .group = OPTION_ARG_OPTIONAL },
+
+	{ .name = "volume",
+	  .key = 'n',
+	  .arg = "<volume id>",
+	  .flags = 0,
+	  .doc = "UBI volume id",
+	  .group = OPTION_ARG_OPTIONAL },
+
+	{ .name = "truncate",
+	  .key = 't',
+	  .arg = NULL,
+	  .flags = 0,
+	  .doc = "truncate volume",
+	  .group = OPTION_ARG_OPTIONAL },
+
+	{ .name = "broken-update",
+	  .key = 'B',
+	  .arg = NULL,
+	  .flags = 0,
+	  .doc = "broken update, this is for testing",
+	  .group = OPTION_ARG_OPTIONAL },
+
+	{ .name = NULL, .key = 0, .arg = NULL, .flags = 0,
+	  .doc = NULL, .group = 0 },
+};
+
+static struct argp argp = {
+	.options = options,
+	.parser = parse_opt,
+	.args_doc = 0,
+	.doc =	doc,
+	.children = NULL,
+	.help_filter = NULL,
+	.argp_domain = NULL,
+};
+
+/*
+ * @brief Parse the arguments passed into the test case.
+ *
+ * @param key            The parameter.
+ * @param arg            Argument passed to parameter.
+ * @param state          Location to put information on parameters.
+ *
+ * @return error
+ *
+ * Get the `input' argument from `argp_parse', which we know is a
+ * pointer to our arguments structure.
+ */
+static error_t
+parse_opt(int key, char *arg, struct argp_state *state)
+{
+	struct args *args = state->input;
+
+	switch (key) {
+	case 'v': /* --verbose=<level> */
+		verbose = strtoul(arg, (char **)NULL, 0);
+		break;
+
+	case 'd': /* --device=<device number> */
+		args->device = strtol(arg, (char **)NULL, 0);
+		break;
+
+	case 'b': /* --bufsize=<bufsize> */
+		args->bufsize = strtol(arg, (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 'n': /* --volume=<volume id> */
+		args->volume = strtol(arg, (char **)NULL, 0);
+		break;
+
+	case ARGP_KEY_NO_ARGS:
+		/* argp_usage(state); */
+		break;
+
+	case ARGP_KEY_ARG:
+		args->arg1 = arg;
+		/* Now we consume all the rest of the arguments.
+                   `state->next' is the index in `state->argv' of the
+                   next argument to be parsed, which is the first STRING
+                   we're interested in, so we can just use
+                   `&state->argv[state->next]' as the value for
+                   arguments->strings.
+
+                   _In addition_, by setting `state->next' to the end
+                   of the arguments, we can force argp to stop parsing here and
+                   return. */
+
+		args->options = &state->argv[state->next];
+		state->next = state->argc;
+		break;
+
+	case ARGP_KEY_END:
+		/* argp_usage(state); */
+		break;
+
+	default:
+		return(ARGP_ERR_UNKNOWN);
+	}
+
+	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)
+{
+	int rc, ofd;
+	char path[MAXPATH];
+	int old_errno;
+
+	snprintf(path, MAXPATH-1, "/dev/ubi%d_%d", args->device, args->volume);
+	path[MAXPATH-1] = '\0';
+
+	ofd = open(path, O_RDWR);
+	if (ofd < 0) {
+		fprintf(stderr, "Cannot open volume %s\n", path);
+		exit(EXIT_FAILURE);
+	}
+	rc = ioctl(ofd, UBI_IOCVOLUP, &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)
+{
+	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 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->device, args->volume);
+	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 = ioctl(ofd, UBI_IOCVOLUP, &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;
+
+	argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, &myargs);
+
+	if (myargs.truncate) {
+		rc = ubi_truncate_volume(&myargs, 0LL);
+		if (rc < 0)
+			exit(EXIT_FAILURE);
+		exit(EXIT_SUCCESS);
+	}
+	if (myargs.broken_update) {
+		rc = ubi_truncate_volume(&myargs, 1LL);
+		if (rc < 0)
+			exit(EXIT_FAILURE);
+		exit(EXIT_SUCCESS);
+	}
+	rc = ubi_update_volume(&myargs);
+	if (rc < 0)
+		exit(EXIT_FAILURE);
+
+	exit(EXIT_SUCCESS);
+}