2 * Copyright (c) International Business Machines Corp., 2006
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 * Author: Artem Bityutskiy
20 * UBI (Unsorted Block Images) library.
23 #define PROGRAM_NAME "libubi"
25 #include <sys/sysmacros.h>
33 #include <sys/ioctl.h>
35 #include <sys/types.h>
37 #include "libubi_int.h"
40 * mkpath - compose full path from 2 given components.
41 * @path: the first component
42 * @name: the second component
44 * This function returns the resulting path in case of success and %NULL in
47 static char *mkpath(const char *path
, const char *name
)
50 int len1
= strlen(path
);
51 int len2
= strlen(name
);
53 n
= malloc(len1
+ len2
+ 2);
55 sys_errmsg("cannot allocate %d bytes", len1
+ len2
+ 2);
59 memcpy(n
, path
, len1
);
60 if (n
[len1
- 1] != '/')
63 memcpy(n
+ len1
, name
, len2
+ 1);
68 * read_positive_ll - read a positive 'long long' value from a file.
69 * @file: the file to read from
70 * @value: the result is stored here
72 * This function reads file @file and interprets its contents as a positive
73 * 'long long' integer. If this is not true, it fails with %EINVAL error code.
74 * Returns %0 in case of success and %-1 in case of failure.
76 static int read_positive_ll(const char *file
, long long *value
)
81 fd
= open(file
, O_RDONLY
);
85 rd
= read(fd
, buf
, sizeof(buf
));
87 sys_errmsg("cannot read \"%s\"", file
);
90 if (rd
== sizeof(buf
)) {
91 errmsg("contents of \"%s\" is too long", file
);
97 if (sscanf(buf
, "%lld\n", value
) != 1) {
98 errmsg("cannot read integer from \"%s\"\n", file
);
104 errmsg("negative value %lld in \"%s\"", *value
, file
);
110 sys_errmsg("close failed on \"%s\"", file
);
122 * read_positive_int - read a positive 'int' value from a file.
123 * @file: the file to read from
124 * @value: the result is stored here
126 * This function is the same as 'read_positive_ll()', but it reads an 'int'
127 * value, not 'long long'.
129 static int read_positive_int(const char *file
, int *value
)
133 if (read_positive_ll(file
, &res
))
136 /* Make sure the value is not too big */
138 errmsg("value %lld read from file \"%s\" is out of range",
149 * read_data - read data from a file.
150 * @file: the file to read from
151 * @buf: the buffer to read to
152 * @buf_len: buffer length
154 * This function returns number of read bytes in case of success and %-1 in
155 * case of failure. Note, if the file contains more then @buf_len bytes of
156 * date, this function fails with %EINVAL error code.
158 static int read_data(const char *file
, void *buf
, int buf_len
)
160 int fd
, rd
, tmp
, tmp1
;
162 fd
= open(file
, O_RDONLY
);
166 rd
= read(fd
, buf
, buf_len
);
168 sys_errmsg("cannot read \"%s\"", file
);
173 errmsg("contents of \"%s\" is too long", file
);
178 ((char *)buf
)[rd
] = '\0';
180 /* Make sure all data is read */
181 tmp1
= read(fd
, &tmp
, 1);
183 sys_errmsg("cannot read \"%s\"", file
);
187 errmsg("file \"%s\" contains too much data (> %d bytes)",
194 sys_errmsg("close failed on \"%s\"", file
);
206 * read_major - read major and minor numbers from a file.
207 * @file: name of the file to read from
208 * @major: major number is returned here
209 * @minor: minor number is returned here
211 * This function returns % in case of succes, and %-1 in case of failure.
213 static int read_major(const char *file
, int *major
, int *minor
)
218 ret
= read_data(file
, buf
, 50);
222 ret
= sscanf(buf
, "%d:%d\n", major
, minor
);
225 errmsg("\"%s\" does not have major:minor format", file
);
229 if (*major
< 0 || *minor
< 0) {
231 errmsg("bad major:minor %d:%d in \"%s\"",
232 *major
, *minor
, file
);
240 * dev_read_int - read a positive 'int' value from an UBI device sysfs file.
241 * @patt: file pattern to read from
242 * @dev_num: UBI device number
243 * @value: the result is stored here
245 * This function returns %0 in case of success and %-1 in case of failure.
247 static int dev_read_int(const char *patt
, int dev_num
, int *value
)
249 char file
[strlen(patt
) + 50];
251 sprintf(file
, patt
, dev_num
);
252 return read_positive_int(file
, value
);
256 * vol_read_int - read a positive 'int' value from an UBI volume sysfs file.
257 * @patt: file pattern to read from
258 * @dev_num: UBI device number
260 * @value: the result is stored here
262 * This function returns %0 in case of success and %-1 in case of failure.
264 static int vol_read_int(const char *patt
, int dev_num
, int vol_id
, int *value
)
266 char file
[strlen(patt
) + 100];
268 sprintf(file
, patt
, dev_num
, vol_id
);
269 return read_positive_int(file
, value
);
273 * dev_read_ll - read a positive 'long long' value from an UBI device sysfs file.
274 * @patt: file pattern to read from
275 * @dev_num: UBI device number
276 * @value: the result is stored here
278 * This function returns %0 in case of success and %-1 in case of failure.
280 static int dev_read_ll(const char *patt
, int dev_num
, long long *value
)
282 char file
[strlen(patt
) + 50];
284 sprintf(file
, patt
, dev_num
);
285 return read_positive_ll(file
, value
);
289 * vol_read_ll - read a positive 'long long' value from an UBI volume sysfs file.
290 * @patt: file pattern to read from
291 * @dev_num: UBI device number
293 * @value: the result is stored here
295 * This function returns %0 in case of success and %-1 in case of failure.
297 static int vol_read_ll(const char *patt
, int dev_num
, int vol_id
,
300 char file
[strlen(patt
) + 100];
302 sprintf(file
, patt
, dev_num
, vol_id
);
303 return read_positive_ll(file
, value
);
307 * vol_read_data - read data from an UBI volume's sysfs file.
308 * @patt: file pattern to read from
309 * @dev_num: UBI device number
311 * @buf: buffer to read to
312 * @buf_len: buffer length
314 * This function returns number of read bytes in case of success and %-1 in
317 static int vol_read_data(const char *patt
, int dev_num
, int vol_id
, void *buf
,
320 char file
[strlen(patt
) + 100];
322 sprintf(file
, patt
, dev_num
, vol_id
);
323 return read_data(file
, buf
, buf_len
);
327 * dev_get_major - get major and minor numbers of an UBI device.
328 * @lib: libubi descriptor
329 * @dev_num: UBI device number
330 * @major: major number is returned here
331 * @minor: minor number is returned here
333 * This function returns zero in case of succes and %-1 in case of failure.
335 static int dev_get_major(struct libubi
*lib
, int dev_num
, int *major
, int *minor
)
337 char file
[strlen(lib
->dev_dev
) + 50];
339 sprintf(file
, lib
->dev_dev
, dev_num
);
340 return read_major(file
, major
, minor
);
344 * vol_get_major - get major and minor numbers of an UBI volume.
345 * @lib: libubi descriptor
346 * @dev_num: UBI device number
348 * @major: major number is returned here
349 * @minor: minor number is returned here
351 * This function returns zero in case of succes and %-1 in case of failure.
353 static int vol_get_major(struct libubi
*lib
, int dev_num
, int vol_id
,
354 int *major
, int *minor
)
356 char file
[strlen(lib
->vol_dev
) + 100];
358 sprintf(file
, lib
->vol_dev
, dev_num
, vol_id
);
359 return read_major(file
, major
, minor
);
363 * vol_node2nums - find UBI device number and volume ID by volume device node
365 * @lib: UBI library descriptor
366 * @node: UBI character device node name
367 * @dev_num: UBI device number is returned here
368 * @vol_id: volume ID is returned hers
370 * This function returns zero in case of succes and %-1 in case of failure.
372 static int vol_node2nums(struct libubi
*lib
, const char *node
, int *dev_num
,
376 struct ubi_info info
;
377 int i
, fd
, major
, minor
;
378 char file
[strlen(lib
->ubi_vol
) + 100];
380 if (stat(node
, &st
)) {
381 sys_errmsg("cannot get information about \"%s\"",
385 if (!S_ISCHR(st
.st_mode
)) {
387 errmsg("\"%s\" is not a character device", node
);
391 major
= major(st
.st_rdev
);
392 minor
= minor(st
.st_rdev
);
396 errmsg("\"%s\" is not a volume character device", node
);
400 if (ubi_get_info((libubi_t
*)lib
, &info
))
403 for (i
= info
.lowest_dev_num
; i
<= info
.highest_dev_num
; i
++) {
404 int major1
, minor1
, ret
;
406 ret
= dev_get_major(lib
, i
, &major1
, &minor1
);
417 if (i
> info
.highest_dev_num
) {
422 /* Make sure this UBI volume exists */
423 sprintf(file
, lib
->ubi_vol
, i
, minor
- 1);
424 fd
= open(file
, O_RDONLY
);
437 * dev_node2num - find UBI device number by its character device node.
438 * @lib: UBI library descriptor
439 * @node: UBI character device node name
440 * @dev_num: UBI device number is returned here
442 * This function returns %0 in case of success and %-1 in case of failure.
444 static int dev_node2num(struct libubi
*lib
, const char *node
, int *dev_num
)
447 struct ubi_info info
;
450 if (stat(node
, &st
)) {
451 sys_errmsg("cannot get information about \"%s\"", node
);
454 if (!S_ISCHR(st
.st_mode
)) {
456 errmsg("\"%s\" is not a character device", node
);
460 major
= major(st
.st_rdev
);
461 minor
= minor(st
.st_rdev
);
465 errmsg("\"%s\" is not an UBI character device", node
);
469 if (ubi_get_info((libubi_t
*)lib
, &info
))
472 for (i
= info
.lowest_dev_num
; i
<= info
.highest_dev_num
; i
++) {
473 int major1
, minor1
, ret
;
475 ret
= dev_get_major(lib
, i
, &major1
, &minor1
);
482 if (major1
== major
) {
484 errmsg("UBI character device minor number is "
485 "%d, but must be 0", minor1
);
499 int mtd_num2ubi_dev(libubi_t desc
, int mtd_num
, int *dev_num
)
501 struct ubi_info info
;
502 int i
, ret
, mtd_num1
;
503 struct libubi
*lib
= desc
;
505 if (ubi_get_info(desc
, &info
))
508 for (i
= info
.lowest_dev_num
; i
<= info
.highest_dev_num
; i
++) {
509 ret
= dev_read_int(lib
->dev_mtd_num
, i
, &mtd_num1
);
516 if (mtd_num1
== mtd_num
) {
527 libubi_t
libubi_open(void)
532 lib
= calloc(1, sizeof(struct libubi
));
536 lib
->sysfs_ctrl
= mkpath("/sys", SYSFS_CTRL
);
537 if (!lib
->sysfs_ctrl
)
540 lib
->ctrl_dev
= mkpath(lib
->sysfs_ctrl
, CTRL_DEV
);
544 lib
->sysfs_ubi
= mkpath("/sys", SYSFS_UBI
);
548 /* Make sure UBI is present */
549 fd
= open(lib
->sysfs_ubi
, O_RDONLY
);
556 sys_errmsg("close failed on \"%s\"", lib
->sysfs_ubi
);
560 lib
->ubi_dev
= mkpath(lib
->sysfs_ubi
, UBI_DEV_NAME_PATT
);
564 lib
->ubi_version
= mkpath(lib
->sysfs_ubi
, UBI_VER
);
565 if (!lib
->ubi_version
)
568 lib
->dev_dev
= mkpath(lib
->ubi_dev
, DEV_DEV
);
572 lib
->dev_avail_ebs
= mkpath(lib
->ubi_dev
, DEV_AVAIL_EBS
);
573 if (!lib
->dev_avail_ebs
)
576 lib
->dev_total_ebs
= mkpath(lib
->ubi_dev
, DEV_TOTAL_EBS
);
577 if (!lib
->dev_total_ebs
)
580 lib
->dev_bad_count
= mkpath(lib
->ubi_dev
, DEV_BAD_COUNT
);
581 if (!lib
->dev_bad_count
)
584 lib
->dev_eb_size
= mkpath(lib
->ubi_dev
, DEV_EB_SIZE
);
585 if (!lib
->dev_eb_size
)
588 lib
->dev_max_ec
= mkpath(lib
->ubi_dev
, DEV_MAX_EC
);
589 if (!lib
->dev_max_ec
)
592 lib
->dev_bad_rsvd
= mkpath(lib
->ubi_dev
, DEV_MAX_RSVD
);
593 if (!lib
->dev_bad_rsvd
)
596 lib
->dev_max_vols
= mkpath(lib
->ubi_dev
, DEV_MAX_VOLS
);
597 if (!lib
->dev_max_vols
)
600 lib
->dev_min_io_size
= mkpath(lib
->ubi_dev
, DEV_MIN_IO_SIZE
);
601 if (!lib
->dev_min_io_size
)
604 lib
->dev_mtd_num
= mkpath(lib
->ubi_dev
, DEV_MTD_NUM
);
605 if (!lib
->dev_mtd_num
)
608 lib
->ubi_vol
= mkpath(lib
->sysfs_ubi
, UBI_VOL_NAME_PATT
);
612 lib
->vol_type
= mkpath(lib
->ubi_vol
, VOL_TYPE
);
616 lib
->vol_dev
= mkpath(lib
->ubi_vol
, VOL_DEV
);
620 lib
->vol_alignment
= mkpath(lib
->ubi_vol
, VOL_ALIGNMENT
);
621 if (!lib
->vol_alignment
)
624 lib
->vol_data_bytes
= mkpath(lib
->ubi_vol
, VOL_DATA_BYTES
);
625 if (!lib
->vol_data_bytes
)
628 lib
->vol_rsvd_ebs
= mkpath(lib
->ubi_vol
, VOL_RSVD_EBS
);
629 if (!lib
->vol_rsvd_ebs
)
632 lib
->vol_eb_size
= mkpath(lib
->ubi_vol
, VOL_EB_SIZE
);
633 if (!lib
->vol_eb_size
)
636 lib
->vol_corrupted
= mkpath(lib
->ubi_vol
, VOL_CORRUPTED
);
637 if (!lib
->vol_corrupted
)
640 lib
->vol_name
= mkpath(lib
->ubi_vol
, VOL_NAME
);
644 if (read_positive_int(lib
->ubi_version
, &version
))
646 if (version
!= LIBUBI_UBI_VERSION
) {
647 errmsg("this library was made for UBI version %d, but UBI "
648 "version %d is detected\n", LIBUBI_UBI_VERSION
, version
);
655 libubi_close((libubi_t
)lib
);
659 void libubi_close(libubi_t desc
)
661 struct libubi
*lib
= (struct libubi
*)desc
;
664 free(lib
->vol_corrupted
);
665 free(lib
->vol_eb_size
);
666 free(lib
->vol_rsvd_ebs
);
667 free(lib
->vol_data_bytes
);
668 free(lib
->vol_alignment
);
672 free(lib
->dev_mtd_num
);
673 free(lib
->dev_min_io_size
);
674 free(lib
->dev_max_vols
);
675 free(lib
->dev_bad_rsvd
);
676 free(lib
->dev_max_ec
);
677 free(lib
->dev_eb_size
);
678 free(lib
->dev_bad_count
);
679 free(lib
->dev_total_ebs
);
680 free(lib
->dev_avail_ebs
);
682 free(lib
->ubi_version
);
684 free(lib
->sysfs_ubi
);
686 free(lib
->sysfs_ctrl
);
691 * do_attach - perform the actual attach operation.
692 * @node: name of the UBI control character device node
695 * This function performs the actual UBI attach operation. Returns %0 in case of
696 * success and %-1 in case of failure. @r->ubi_num contains newly created UBI
699 static int do_attach(const char *node
, const struct ubi_attach_req
*r
)
703 fd
= open(node
, O_RDONLY
);
705 sys_errmsg("cannot open \"%s\"", node
);
708 ret
= ioctl(fd
, UBI_IOCATT
, r
);
713 #ifdef UDEV_SETTLE_HACK
714 // if (system("udevsettle") == -1)
721 #ifndef MTD_CHAR_MAJOR
723 * This is taken from kernel <linux/mtd/mtd.h> and is unlikely to change anytime
726 #define MTD_CHAR_MAJOR 90
730 * mtd_node_to_num - converts device node to MTD number.
731 * @mtd_dev_node: path to device node to convert
733 * This function converts given @mtd_dev_node to MTD device number.
734 * @mtd_dev_node should contain path to the MTD device node. Returns MTD device
735 * number in case of success and %-1 in case of failure (errno is set).
737 static int mtd_node_to_num(const char *mtd_dev_node
)
742 if (stat(mtd_dev_node
, &sb
) < 0) {
743 sys_errmsg("cannot stat \"%s\"", mtd_dev_node
);
747 if (!S_ISCHR(sb
.st_mode
)) {
749 sys_errmsg("\"%s\" is not a character device",
754 major
= major(sb
.st_rdev
);
755 minor
= minor(sb
.st_rdev
);
757 if (major
!= MTD_CHAR_MAJOR
) {
759 sys_errmsg("\"%s\" is not an MTD device", mtd_dev_node
);
766 int ubi_attach(libubi_t desc
, const char *node
, struct ubi_attach_request
*req
)
768 struct ubi_attach_req r
;
773 if (req
->mtd_dev_node
) {
775 * User has passed path to device node. Lets find out MTD
776 * device number of the device and update req->mtd_num with it
778 req
->mtd_num
= mtd_node_to_num(req
->mtd_dev_node
);
779 if (req
->mtd_num
== -1)
783 memset(&r
, 0, sizeof(struct ubi_attach_req
));
784 r
.ubi_num
= req
->dev_num
;
785 r
.mtd_num
= req
->mtd_num
;
786 r
.vid_hdr_offset
= req
->vid_hdr_offset
;
788 if (req
->max_beb_per1024
) {
790 * We first have to check if the running kernel supports the
791 * 'max_beb_per1024' parameter. To do this, we invoke the
792 * "attach" ioctl 2 times: first with incorrect value %-1 of
795 * If the ioctl succeeds, it means that the kernel doesn't
796 * support the feature and just ignored our 'max_beb_per1024'
799 * If the ioctl returns -EINVAL, we assume this is because
800 * 'max_beb_per1024' was set to -1, and we invoke the ioctl for
801 * the second time with the 'max_beb_per1024' value.
803 r
.max_beb_per1024
= -1;
804 ret
= do_attach(node
, &r
);
806 req
->dev_num
= r
.ubi_num
;
808 * The call succeeded. It means that the kernel ignored
809 * 'max_beb_per1024' parameter.
812 } else if (errno
!= EINVAL
)
816 r
.max_beb_per1024
= req
->max_beb_per1024
;
818 ret
= do_attach(node
, &r
);
820 req
->dev_num
= r
.ubi_num
;
825 int ubi_detach_mtd(libubi_t desc
, const char *node
, int mtd_num
)
829 ret
= mtd_num2ubi_dev(desc
, mtd_num
, &ubi_dev
);
835 return ubi_remove_dev(desc
, node
, ubi_dev
);
838 int ubi_detach(libubi_t desc
, const char *node
, const char *mtd_dev_node
)
847 mtd_num
= mtd_node_to_num(mtd_dev_node
);
851 return ubi_detach_mtd(desc
, node
, mtd_num
);
854 int ubi_remove_dev(libubi_t desc
, const char *node
, int ubi_dev
)
860 fd
= open(node
, O_RDONLY
);
862 sys_errmsg("cannot open \"%s\"", node
);
865 ret
= ioctl(fd
, UBI_IOCFDET
, &ubi_dev
);
869 #ifdef UDEV_SETTLE_HACK
870 // if (system("udevsettle") == -1)
880 int ubi_probe_node(libubi_t desc
, const char *node
)
883 struct ubi_info info
;
884 int i
, fd
, major
, minor
;
885 struct libubi
*lib
= (struct libubi
*)desc
;
886 char file
[strlen(lib
->ubi_vol
) + 100];
888 if (stat(node
, &st
)) {
889 sys_errmsg("cannot get information about \"%s\"", node
);
893 if (!S_ISCHR(st
.st_mode
)) {
894 errmsg("\"%s\" is not a character device", node
);
899 major
= major(st
.st_rdev
);
900 minor
= minor(st
.st_rdev
);
902 if (ubi_get_info((libubi_t
*)lib
, &info
))
905 for (i
= info
.lowest_dev_num
; i
<= info
.highest_dev_num
; i
++) {
906 int major1
, minor1
, ret
;
908 ret
= dev_get_major(lib
, i
, &major1
, &minor1
);
921 if (i
> info
.highest_dev_num
)
927 /* This is supposdely an UBI volume device node */
928 sprintf(file
, lib
->ubi_vol
, i
, minor
- 1);
929 fd
= open(file
, O_RDONLY
);
936 errmsg("\"%s\" has major:minor %d:%d, but this does not correspond to "
937 "any existing UBI device or volume", node
, major
, minor
);
942 int ubi_get_info(libubi_t desc
, struct ubi_info
*info
)
945 struct dirent
*dirent
;
946 struct libubi
*lib
= (struct libubi
*)desc
;
948 memset(info
, 0, sizeof(struct ubi_info
));
950 if (read_major(lib
->ctrl_dev
, &info
->ctrl_major
, &info
->ctrl_minor
)) {
952 * Older UBI versions did not have control device, so we do not
953 * panic here for compatibility reasons. May be few years later
954 * we could return -1 here, but for now just set major:minor to
957 info
->ctrl_major
= info
->ctrl_minor
= -1;
961 * We have to scan the UBI sysfs directory to identify how many UBI
962 * devices are present.
964 sysfs_ubi
= opendir(lib
->sysfs_ubi
);
968 info
->lowest_dev_num
= INT_MAX
;
974 dirent
= readdir(sysfs_ubi
);
978 if (strlen(dirent
->d_name
) >= 255) {
979 errmsg("invalid entry in %s: \"%s\"",
980 lib
->sysfs_ubi
, dirent
->d_name
);
985 ret
= sscanf(dirent
->d_name
, UBI_DEV_NAME_PATT
"%s",
988 info
->dev_count
+= 1;
989 if (dev_num
> info
->highest_dev_num
)
990 info
->highest_dev_num
= dev_num
;
991 if (dev_num
< info
->lowest_dev_num
)
992 info
->lowest_dev_num
= dev_num
;
996 if (!dirent
&& errno
) {
997 sys_errmsg("readdir failed on \"%s\"", lib
->sysfs_ubi
);
1001 if (closedir(sysfs_ubi
)) {
1002 sys_errmsg("closedir failed on \"%s\"", lib
->sysfs_ubi
);
1005 if (info
->lowest_dev_num
== INT_MAX
)
1006 info
->lowest_dev_num
= 0;
1008 if (read_positive_int(lib
->ubi_version
, &info
->version
))
1014 closedir(sysfs_ubi
);
1018 int ubi_mkvol(libubi_t desc
, const char *node
, struct ubi_mkvol_request
*req
)
1021 struct ubi_mkvol_req r
;
1024 memset(&r
, 0, sizeof(struct ubi_mkvol_req
));
1027 r
.vol_id
= req
->vol_id
;
1028 r
.alignment
= req
->alignment
;
1029 r
.bytes
= req
->bytes
;
1030 r
.vol_type
= req
->vol_type
;
1032 n
= strlen(req
->name
);
1033 if (n
> UBI_MAX_VOLUME_NAME
)
1036 strncpy(r
.name
, req
->name
, UBI_MAX_VOLUME_NAME
+ 1);
1040 fd
= open(node
, O_RDONLY
);
1042 sys_errmsg("cannot open \"%s\"", node
);
1045 ret
= ioctl(fd
, UBI_IOCMKVOL
, &r
);
1052 req
->vol_id
= r
.vol_id
;
1054 #ifdef UDEV_SETTLE_HACK
1055 // if (system("udevsettle") == -1)
1063 int ubi_rmvol(libubi_t desc
, const char *node
, int vol_id
)
1068 fd
= open(node
, O_RDONLY
);
1070 sys_errmsg("cannot open \"%s\"", node
);
1074 ret
= ioctl(fd
, UBI_IOCRMVOL
, &vol_id
);
1082 #ifdef UDEV_SETTLE_HACK
1083 // if (system("udevsettle") == -1)
1091 int ubi_rnvols(libubi_t desc
, const char *node
, struct ubi_rnvol_req
*rnvol
)
1096 fd
= open(node
, O_RDONLY
);
1100 ret
= ioctl(fd
, UBI_IOCRNVOL
, rnvol
);
1108 #ifdef UDEV_SETTLE_HACK
1109 // if (system("udevsettle") == -1)
1117 int ubi_rsvol(libubi_t desc
, const char *node
, int vol_id
, long long bytes
)
1120 struct ubi_rsvol_req req
;
1123 fd
= open(node
, O_RDONLY
);
1125 sys_errmsg("cannot open \"%s\"", node
);
1129 req
.vol_id
= vol_id
;
1131 ret
= ioctl(fd
, UBI_IOCRSVOL
, &req
);
1136 int ubi_update_start(libubi_t desc
, int fd
, long long bytes
)
1139 if (ioctl(fd
, UBI_IOCVOLUP
, &bytes
))
1144 int ubi_leb_change_start(libubi_t desc
, int fd
, int lnum
, int bytes
)
1146 struct ubi_leb_change_req req
;
1149 memset(&req
, 0, sizeof(struct ubi_leb_change_req
));
1154 if (ioctl(fd
, UBI_IOCEBCH
, &req
))
1159 int ubi_dev_present(libubi_t desc
, int dev_num
)
1162 struct libubi
*lib
= (struct libubi
*)desc
;
1163 char file
[strlen(lib
->ubi_dev
) + 50];
1165 sprintf(file
, lib
->ubi_dev
, dev_num
);
1166 return !stat(file
, &st
);
1169 int ubi_get_dev_info1(libubi_t desc
, int dev_num
, struct ubi_dev_info
*info
)
1172 struct dirent
*dirent
;
1173 struct libubi
*lib
= (struct libubi
*)desc
;
1175 memset(info
, 0, sizeof(struct ubi_dev_info
));
1176 info
->dev_num
= dev_num
;
1178 if (!ubi_dev_present(desc
, dev_num
))
1181 sysfs_ubi
= opendir(lib
->sysfs_ubi
);
1185 info
->lowest_vol_id
= INT_MAX
;
1188 int vol_id
, ret
, devno
;
1192 dirent
= readdir(sysfs_ubi
);
1196 if (strlen(dirent
->d_name
) >= 255) {
1197 errmsg("invalid entry in %s: \"%s\"",
1198 lib
->sysfs_ubi
, dirent
->d_name
);
1202 ret
= sscanf(dirent
->d_name
, UBI_VOL_NAME_PATT
"%s", &devno
, &vol_id
, tmp_buf
);
1203 if (ret
== 2 && devno
== dev_num
) {
1204 info
->vol_count
+= 1;
1205 if (vol_id
> info
->highest_vol_id
)
1206 info
->highest_vol_id
= vol_id
;
1207 if (vol_id
< info
->lowest_vol_id
)
1208 info
->lowest_vol_id
= vol_id
;
1212 if (!dirent
&& errno
) {
1213 sys_errmsg("readdir failed on \"%s\"", lib
->sysfs_ubi
);
1217 if (closedir(sysfs_ubi
)) {
1218 sys_errmsg("closedir failed on \"%s\"", lib
->sysfs_ubi
);
1221 if (info
->lowest_vol_id
== INT_MAX
)
1222 info
->lowest_vol_id
= 0;
1224 if (dev_get_major(lib
, dev_num
, &info
->major
, &info
->minor
))
1227 if (dev_read_int(lib
->dev_mtd_num
, dev_num
, &info
->mtd_num
))
1229 if (dev_read_int(lib
->dev_avail_ebs
, dev_num
, &info
->avail_lebs
))
1231 if (dev_read_int(lib
->dev_total_ebs
, dev_num
, &info
->total_lebs
))
1233 if (dev_read_int(lib
->dev_bad_count
, dev_num
, &info
->bad_count
))
1235 if (dev_read_int(lib
->dev_eb_size
, dev_num
, &info
->leb_size
))
1237 if (dev_read_int(lib
->dev_bad_rsvd
, dev_num
, &info
->bad_rsvd
))
1239 if (dev_read_ll(lib
->dev_max_ec
, dev_num
, &info
->max_ec
))
1241 if (dev_read_int(lib
->dev_max_vols
, dev_num
, &info
->max_vol_count
))
1243 if (dev_read_int(lib
->dev_min_io_size
, dev_num
, &info
->min_io_size
))
1246 info
->avail_bytes
= (long long)info
->avail_lebs
* info
->leb_size
;
1247 info
->total_bytes
= (long long)info
->total_lebs
* info
->leb_size
;
1252 closedir(sysfs_ubi
);
1256 int ubi_get_dev_info(libubi_t desc
, const char *node
, struct ubi_dev_info
*info
)
1258 int err
, dev_num
= 0;
1259 struct libubi
*lib
= (struct libubi
*)desc
;
1261 err
= ubi_probe_node(desc
, node
);
1268 if (dev_node2num(lib
, node
, &dev_num
))
1271 return ubi_get_dev_info1(desc
, dev_num
, info
);
1274 int ubi_get_vol_info1(libubi_t desc
, int dev_num
, int vol_id
,
1275 struct ubi_vol_info
*info
)
1278 struct libubi
*lib
= (struct libubi
*)desc
;
1281 memset(info
, 0, sizeof(struct ubi_vol_info
));
1282 info
->dev_num
= dev_num
;
1283 info
->vol_id
= vol_id
;
1285 if (vol_get_major(lib
, dev_num
, vol_id
, &info
->major
, &info
->minor
))
1288 ret
= vol_read_data(lib
->vol_type
, dev_num
, vol_id
, buf
, 50);
1292 if (strncmp(buf
, "static\n", ret
) == 0)
1293 info
->type
= UBI_STATIC_VOLUME
;
1294 else if (strncmp(buf
, "dynamic\n", ret
) == 0)
1295 info
->type
= UBI_DYNAMIC_VOLUME
;
1297 errmsg("bad value at \"%s\"", buf
);
1302 ret
= vol_read_int(lib
->vol_alignment
, dev_num
, vol_id
,
1306 ret
= vol_read_ll(lib
->vol_data_bytes
, dev_num
, vol_id
,
1310 ret
= vol_read_int(lib
->vol_rsvd_ebs
, dev_num
, vol_id
, &info
->rsvd_lebs
);
1313 ret
= vol_read_int(lib
->vol_eb_size
, dev_num
, vol_id
, &info
->leb_size
);
1316 ret
= vol_read_int(lib
->vol_corrupted
, dev_num
, vol_id
,
1320 info
->rsvd_bytes
= (long long)info
->leb_size
* info
->rsvd_lebs
;
1322 ret
= vol_read_data(lib
->vol_name
, dev_num
, vol_id
, &info
->name
,
1323 UBI_VOL_NAME_MAX
+ 2);
1327 info
->name
[ret
- 1] = '\0';
1331 int ubi_get_vol_info(libubi_t desc
, const char *node
, struct ubi_vol_info
*info
)
1333 int err
, vol_id
= 0, dev_num
= 0;
1334 struct libubi
*lib
= (struct libubi
*)desc
;
1336 err
= ubi_probe_node(desc
, node
);
1343 if (vol_node2nums(lib
, node
, &dev_num
, &vol_id
))
1346 return ubi_get_vol_info1(desc
, dev_num
, vol_id
, info
);
1349 int ubi_get_vol_info1_nm(libubi_t desc
, int dev_num
, const char *name
,
1350 struct ubi_vol_info
*info
)
1353 unsigned int nlen
= strlen(name
);
1354 struct ubi_dev_info dev_info
;
1357 errmsg("bad \"name\" input parameter");
1362 err
= ubi_get_dev_info1(desc
, dev_num
, &dev_info
);
1366 for (i
= dev_info
.lowest_vol_id
;
1367 i
<= dev_info
.highest_vol_id
; i
++) {
1368 err
= ubi_get_vol_info1(desc
, dev_num
, i
, info
);
1370 if (errno
== ENOENT
)
1375 if (nlen
== strlen(info
->name
) && !strcmp(name
, info
->name
))
1383 int ubi_set_property(int fd
, uint8_t property
, uint64_t value
)
1385 struct ubi_set_vol_prop_req r
;
1387 memset(&r
, 0, sizeof(struct ubi_set_vol_prop_req
));
1388 r
.property
= property
;
1391 return ioctl(fd
, UBI_IOCSETVOLPROP
, &r
);
1394 int ubi_leb_unmap(int fd
, int lnum
)
1396 return ioctl(fd
, UBI_IOCEBUNMAP
, &lnum
);
1399 int ubi_is_mapped(int fd
, int lnum
)
1401 return ioctl(fd
, UBI_IOCEBISMAP
, &lnum
);