[PATCH v4] mtdinfo: add regioninfo/eraseblock map display
Mike Frysinger
vapier at gentoo.org
Wed Jun 8 15:11:32 EDT 2011
This brings the mtdinfo utility in line with the functionality
of the flash_info utility. It dumps the erase regioninfo (if
the devices has it) as well as showing a handy eraseblock map
(if the user has requested it). The eraseblock map also shows
which blocks are locked and which ones are bad.
Signed-off-by: Mike Frysinger <vapier at gentoo.org>
---
v4
- still show region info when map isn't requested
ubi-utils/src/mtdinfo.c | 122 +++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 119 insertions(+), 3 deletions(-)
diff --git a/ubi-utils/src/mtdinfo.c b/ubi-utils/src/mtdinfo.c
index 38b63ca..e4b9f70 100644
--- a/ubi-utils/src/mtdinfo.c
+++ b/ubi-utils/src/mtdinfo.c
@@ -29,6 +29,7 @@
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
#include <mtd/mtd-user.h>
#include <libubigen.h>
@@ -41,6 +42,7 @@ struct args {
int mtdn;
unsigned int all:1;
unsigned int ubinfo:1;
+ unsigned int map:1;
const char *node;
};
@@ -59,14 +61,15 @@ static const char optionsstr[] =
" (deprecated option, will be removed, do not use)\n"
"-u, --ubi-info print what would UBI layout be if it was put\n"
" on this MTD device\n"
+"-M, --map print eraseblock map\n"
"-a, --all print information about all MTD devices\n"
"-h, --help print help message\n"
"-V, --version print program version";
static const char usage[] =
-"Usage 1: " PROGRAM_NAME " [-m <MTD device number>] [-u] [-h] [-V] [--mtdn <MTD device number>]\n"
+"Usage 1: " PROGRAM_NAME " [-m <MTD device number>] [-u] [-M] [-h] [-V] [--mtdn <MTD device number>]\n"
"\t\t[--ubi-info] [--help] [--version]\n"
-"Usage 2: " PROGRAM_NAME " <MTD device node file name> [-u] [-h] [-V] [--ubi-info] [--help]\n"
+"Usage 2: " PROGRAM_NAME " <MTD device node file name> [-u] [-M] [-h] [-V] [--ubi-info] [--help]\n"
"\t\t[--version]\n"
"Example 1: " PROGRAM_NAME " - (no arguments) print general MTD information\n"
"Example 2: " PROGRAM_NAME " -m 1 - print information about MTD device number 1\n"
@@ -79,6 +82,7 @@ static const char usage[] =
static const struct option long_options[] = {
{ .name = "mtdn", .has_arg = 1, .flag = NULL, .val = 'm' },
{ .name = "ubi-info", .has_arg = 0, .flag = NULL, .val = 'u' },
+ { .name = "map", .has_arg = 0, .flag = NULL, .val = 'M' },
{ .name = "all", .has_arg = 0, .flag = NULL, .val = 'a' },
{ .name = "help", .has_arg = 0, .flag = NULL, .val = 'h' },
{ .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' },
@@ -90,7 +94,7 @@ static int parse_opt(int argc, char * const argv[])
while (1) {
int key, error = 0;
- key = getopt_long(argc, argv, "am:uhV", long_options, NULL);
+ key = getopt_long(argc, argv, "am:uMhV", long_options, NULL);
if (key == -1)
break;
@@ -110,6 +114,10 @@ static int parse_opt(int argc, char * const argv[])
warnmsg("-m/--mtdn is depecated, will be removed in mtd-utils-1.4.6");
break;
+ case 'M':
+ args.map = 1;
+ break;
+
case 'h':
printf("%s\n\n", doc);
printf("%s\n\n", usage);
@@ -139,6 +147,9 @@ static int parse_opt(int argc, char * const argv[])
args.node = NULL;
}
+ if (args.map && !args.node)
+ return errmsg("-M requires MTD device node name");
+
return 0;
}
@@ -181,6 +192,109 @@ static void print_ubi_info(const struct mtd_info *mtd_info,
printf("Maximum UBI volumes count: %d\n", ui.max_volumes);
}
+static void print_region_map(const struct mtd_dev_info *mtd, int fd,
+ const region_info_t *reginfo)
+{
+ unsigned long start;
+ int i, width;
+ int ret_locked, errno_locked, ret_bad, errno_bad;
+
+ printf("Eraseblock map:\n");
+
+ /* figure out the number of spaces to pad w/out libm */
+ for (i = 1, width = 0; i < reginfo->numblocks; i *= 10, ++width)
+ continue;
+
+ /* if we don't have a fd to query, just show the bare map */
+ if (fd == -1) {
+ ret_locked = ret_bad = -1;
+ errno_locked = errno_bad = ENODEV;
+ } else
+ ret_locked = ret_bad = errno_locked = errno_bad = 0;
+
+ for (i = 0; i < reginfo->numblocks; ++i) {
+ start = reginfo->offset + i * reginfo->erasesize;
+ printf(" %*i: %08lx ", width, i, start);
+
+ if (ret_locked != -1) {
+ ret_locked = mtd_is_locked(mtd, fd, i);
+ if (ret_locked == 1)
+ printf("RO ");
+ else
+ errno_locked = errno;
+ }
+ if (ret_locked != 1)
+ printf(" ");
+
+ if (ret_bad != -1) {
+ ret_bad = mtd_is_bad(mtd, fd, i);
+ if (ret_bad == 1)
+ printf("BAD ");
+ else
+ errno_bad = errno;
+ }
+ if (ret_bad != 1)
+ printf(" ");
+
+ if (((i + 1) % 4) == 0)
+ printf("\n");
+ }
+ if (i % 4)
+ printf("\n");
+
+ if (ret_locked == -1 && errno_locked != EOPNOTSUPP) {
+ errno = errno_locked;
+ sys_errmsg("could not read locked block info");
+ }
+
+ if (mtd->bb_allowed && ret_bad == -1 && errno_bad != EOPNOTSUPP) {
+ errno = errno_bad;
+ sys_errmsg("could not read bad block info");
+ }
+}
+
+static void print_region_info(const struct mtd_dev_info *mtd)
+{
+ region_info_t reginfo;
+ int r, fd;
+
+ /* If we don't have any region info, just return */
+ if (!args.map && mtd->region_cnt == 0)
+ return;
+
+ /* First open the device so we can query it */
+ fd = open(args.node, O_RDONLY | O_CLOEXEC);
+ if (fd == -1) {
+ sys_errmsg("couldn't open MTD dev: %s", args.node);
+ if (mtd->region_cnt)
+ return;
+ }
+
+ /* Walk all the regions and show the map for them */
+ if (mtd->region_cnt) {
+ for (r = 0; r < mtd->region_cnt; ++r) {
+ printf("Eraseblock region %i: ", r);
+ if (mtd_regioninfo(fd, r, ®info) == 0) {
+ printf(" offset: %#x size: %#x numblocks: %#x\n",
+ reginfo.offset, reginfo.erasesize,
+ reginfo.numblocks);
+ if (args.map)
+ print_region_map(mtd, fd, ®info);
+ } else
+ printf(" info is unavailable\n");
+ }
+ } else {
+ reginfo.offset = 0;
+ reginfo.erasesize = mtd->eb_size;
+ reginfo.numblocks = mtd->eb_cnt;
+ reginfo.regionindex = 0;
+ print_region_map(mtd, fd, ®info);
+ }
+
+ if (fd != -1)
+ close(fd);
+}
+
static int print_dev_info(libmtd_t libmtd, const struct mtd_info *mtd_info, int mtdn)
{
int err;
@@ -229,6 +343,8 @@ static int print_dev_info(libmtd_t libmtd, const struct mtd_info *mtd_info, int
if (args.ubinfo)
print_ubi_info(mtd_info, &mtd);
+ print_region_info(&mtd);
+
printf("\n");
return 0;
}
--
1.7.5.3
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