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-rw-r--r--include/libmtd.h6
-rw-r--r--lib/libmtd.c58
-rw-r--r--lib/libmtd_int.h18
-rw-r--r--ubi-utils/src/ubiformat.c23
4 files changed, 86 insertions, 19 deletions
diff --git a/include/libmtd.h b/include/libmtd.h
index 0aea966..2bf9859 100644
--- a/include/libmtd.h
+++ b/include/libmtd.h
@@ -139,6 +139,7 @@ int mtd_get_dev_info1(libmtd_t desc, int mtd_num, struct mtd_dev_info *mtd);
/**
* mtd_erase - erase an eraseblock.
+ * @desc: MTD library descriptor
* @mtd: MTD device description object
* @fd: MTD device node file descriptor
* @eb: eraseblock to erase
@@ -146,10 +147,11 @@ int mtd_get_dev_info1(libmtd_t desc, int mtd_num, struct mtd_dev_info *mtd);
* This function erases eraseblock @eb of MTD device described by @fd. Returns
* %0 in case of success and %-1 in case of failure.
*/
-int mtd_erase(const struct mtd_dev_info *mtd, int fd, int eb);
+int mtd_erase(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb);
/**
* mtd_torture - torture an eraseblock.
+ * @desc: MTD library descriptor
* @mtd: MTD device description object
* @fd: MTD device node file descriptor
* @eb: eraseblock to torture
@@ -157,7 +159,7 @@ int mtd_erase(const struct mtd_dev_info *mtd, int fd, int eb);
* This function tortures eraseblock @eb. Returns %0 in case of success and %-1
* in case of failure.
*/
-int mtd_torture(const struct mtd_dev_info *mtd, int fd, int eb);
+int mtd_torture(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb);
/**
* mtd_is_bad - check if eraseblock is bad.
diff --git a/lib/libmtd.c b/lib/libmtd.c
index 3ff031c..a976679 100644
--- a/lib/libmtd.c
+++ b/lib/libmtd.c
@@ -560,6 +560,8 @@ libmtd_t libmtd_open(void)
if (!lib)
return NULL;
+ lib->offs64_ioctls = OFFS64_IOCTLS_UNKNOWN;
+
lib->sysfs_mtd = mkpath("/sys", SYSFS_MTD);
if (!lib->sysfs_mtd)
goto out_error;
@@ -789,13 +791,57 @@ int mtd_get_dev_info(libmtd_t desc, const char *node, struct mtd_dev_info *mtd)
return mtd_get_dev_info1(desc, mtd_num, mtd);
}
-int mtd_erase(const struct mtd_dev_info *mtd, int fd, int eb)
+int mtd_erase(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb)
{
+ int ret;
+ struct libmtd *lib = (struct libmtd *)desc;
+ struct erase_info_user64 ei64;
struct erase_info_user ei;
- ei.start = eb * mtd->eb_size;;
- ei.length = mtd->eb_size;
- return ioctl(fd, MEMERASE, &ei);
+ if (eb < 0 || eb >= mtd->eb_cnt) {
+ errmsg("bad eraseblock number %d, mtd%d has %d eraseblocks",
+ eb, mtd->mtd_num, mtd->eb_cnt);
+ errno = EINVAL;
+ return -1;
+ }
+
+ ei64.start = (__u64)eb * mtd->eb_size;
+ ei64.length = mtd->eb_size;
+
+ if (lib->offs64_ioctls == OFFS64_IOCTLS_SUPPORTED ||
+ lib->offs64_ioctls == OFFS64_IOCTLS_UNKNOWN) {
+ ret = ioctl(fd, MEMERASE64, &ei64);
+ if (ret == 0)
+ return ret;
+
+ if (errno != ENOTTY ||
+ lib->offs64_ioctls != OFFS64_IOCTLS_UNKNOWN)
+ return sys_errmsg("MEMERASE64 ioctl failed for "
+ "eraseblock %d (mtd%d)",
+ eb, mtd->mtd_num);
+
+ /*
+ * MEMERASE64 support was added in kernel version 2.6.31, so
+ * probably we are working with older kernel and this ioctl is
+ * not supported.
+ */
+ lib->offs64_ioctls = OFFS64_IOCTLS_NOT_SUPPORTED;
+ }
+
+ if (ei64.start + ei64.length > 0xFFFFFFFF) {
+ errmsg("this system can address only %u eraseblocks",
+ 0xFFFFFFFFU / mtd->eb_size);
+ errno = EINVAL;
+ return -1;
+ }
+
+ ei.start = ei64.start;
+ ei.length = ei64.length;
+ ret = ioctl(fd, MEMERASE, &ei);
+ if (ret < 0)
+ return sys_errmsg("MEMERASE ioctl failed for eraseblock %d "
+ "(mtd%d)", eb, mtd->mtd_num);
+ return 0;
}
/* Patterns to write to a physical eraseblock when torturing it */
@@ -820,7 +866,7 @@ static int check_pattern(const void *buf, uint8_t patt, int size)
return 1;
}
-int mtd_torture(const struct mtd_dev_info *mtd, int fd, int eb)
+int mtd_torture(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb)
{
int err, i, patt_count;
void *buf;
@@ -835,7 +881,7 @@ int mtd_torture(const struct mtd_dev_info *mtd, int fd, int eb)
}
for (i = 0; i < patt_count; i++) {
- err = mtd_erase(mtd, fd, eb);
+ err = mtd_erase(desc, mtd, fd, eb);
if (err)
goto out;
diff --git a/lib/libmtd_int.h b/lib/libmtd_int.h
index 7de4b42..bb48d35 100644
--- a/lib/libmtd_int.h
+++ b/lib/libmtd_int.h
@@ -43,6 +43,10 @@ extern "C" {
#define MTD_REGION_CNT "numeraseregions"
#define MTD_FLAGS "flags"
+#define OFFS64_IOCTLS_UNKNOWN 0
+#define OFFS64_IOCTLS_NOT_SUPPORTED 1
+#define OFFS64_IOCTLS_SUPPORTED 2
+
/**
* libmtd - MTD library description data structure.
* @sysfs_mtd: MTD directory in sysfs
@@ -58,6 +62,19 @@ extern "C" {
* @mtd_region_cnt: count of additional erase regions file pattern
* @mtd_flags: MTD device flags file pattern
* @sysfs_supported: non-zero if sysfs is supported by MTD
+ * @offs64_ioctls: %OFFS64_IOCTLS_SUPPORTED if 64-bit %MEMERASE64,
+ * %MEMREADOOB64, %MEMWRITEOOB64 MTD device ioctls are
+ * supported, %OFFS64_IOCTLS_NOT_SUPPORTED if not, and
+ * %OFFS64_IOCTLS_UNKNOWN if it is not known yet;
+ *
+ * Note, we cannot find out whether 64-bit ioctls are supported by MTD when we
+ * are initializing the library, because this requires an MTD device node.
+ * Indeed, we have to actually call the ioctl and check for %ENOTTY to find
+ * out whether it is supported or not.
+ *
+ * Thus, we leave %offs64_ioctls uninitialized in 'libmtd_open()', and
+ * initialize it later, when corresponding libmtd function is used, and when
+ * we actually have a device node and can invoke an ioctl command on it.
*/
struct libmtd
{
@@ -74,6 +91,7 @@ struct libmtd
char *mtd_region_cnt;
char *mtd_flags;
unsigned int sysfs_supported:1;
+ unsigned int offs64_ioctls:2;
};
int legacy_libmtd_open(void);
diff --git a/ubi-utils/src/ubiformat.c b/ubi-utils/src/ubiformat.c
index 6052a35..4e27e4f 100644
--- a/ubi-utils/src/ubiformat.c
+++ b/ubi-utils/src/ubiformat.c
@@ -441,8 +441,8 @@ static int mark_bad(const struct mtd_dev_info *mtd, struct ubi_scan_info *si, in
return consecutive_bad_check(eb);
}
-static int flash_image(const struct mtd_dev_info *mtd, const struct ubigen_info *ui,
- struct ubi_scan_info *si)
+static int flash_image(libmtd_t libmtd, const struct mtd_dev_info *mtd,
+ const struct ubigen_info *ui, struct ubi_scan_info *si)
{
int fd, img_ebs, eb, written_ebs = 0, divisor;
off_t st_size;
@@ -488,7 +488,7 @@ static int flash_image(const struct mtd_dev_info *mtd, const struct ubigen_info
fflush(stdout);
}
- err = mtd_erase(mtd, args.node_fd, eb);
+ err = mtd_erase(libmtd, mtd, args.node_fd, eb);
if (err) {
if (!args.quiet)
printf("\n");
@@ -543,7 +543,7 @@ static int flash_image(const struct mtd_dev_info *mtd, const struct ubigen_info
if (errno != EIO)
goto out_close;
- err = mtd_torture(mtd, args.node_fd, eb);
+ err = mtd_torture(libmtd, mtd, args.node_fd, eb);
if (err) {
if (mark_bad(mtd, si, eb))
goto out_close;
@@ -564,8 +564,9 @@ out_close:
return -1;
}
-static int format(const struct mtd_dev_info *mtd, const struct ubigen_info *ui,
- struct ubi_scan_info *si, int start_eb, int novtbl)
+static int format(libmtd_t libmtd, const struct mtd_dev_info *mtd,
+ const struct ubigen_info *ui, struct ubi_scan_info *si,
+ int start_eb, int novtbl)
{
int eb, err, write_size;
struct ubi_ec_hdr *hdr;
@@ -606,7 +607,7 @@ static int format(const struct mtd_dev_info *mtd, const struct ubigen_info *ui,
fflush(stdout);
}
- err = mtd_erase(mtd, args.node_fd, eb);
+ err = mtd_erase(libmtd, mtd, args.node_fd, eb);
if (err) {
if (!args.quiet)
printf("\n");
@@ -652,7 +653,7 @@ static int format(const struct mtd_dev_info *mtd, const struct ubigen_info *ui,
goto out_free;
}
- err = mtd_torture(mtd, args.node_fd, eb);
+ err = mtd_torture(libmtd, mtd, args.node_fd, eb);
if (err) {
if (mark_bad(mtd, si, eb))
goto out_free;
@@ -922,15 +923,15 @@ int main(int argc, char * const argv[])
}
if (args.image) {
- err = flash_image(&mtd, &ui, si);
+ err = flash_image(libmtd, &mtd, &ui, si);
if (err < 0)
goto out_free;
- err = format(&mtd, &ui, si, err, 1);
+ err = format(libmtd, &mtd, &ui, si, err, 1);
if (err)
goto out_free;
} else {
- err = format(&mtd, &ui, si, 0, args.novtbl);
+ err = format(libmtd, &mtd, &ui, si, 0, args.novtbl);
if (err)
goto out_free;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-24 08:57:57 +0000