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"
32 #include <sys/ioctl.h>
34 #include <sys/types.h>
36 #include "libubi_int.h"
39 * mkpath - compose full path from 2 given components.
40 * @path: the first component
41 * @name: the second component
43 * This function returns the resulting path in case of success and %NULL in
46 static char *mkpath(const char *path
, const char *name
)
49 int len1
= strlen(path
);
50 int len2
= strlen(name
);
52 n
= malloc(len1
+ len2
+ 2);
54 sys_errmsg("cannot allocate %d bytes", len1
+ len2
+ 2);
58 memcpy(n
, path
, len1
);
59 if (n
[len1
- 1] != '/')
62 memcpy(n
+ len1
, name
, len2
+ 1);
67 * read_positive_ll - read a positive 'long long' value from a file.
68 * @file: the file to read from
69 * @value: the result is stored here
71 * This function reads file @file and interprets its contents as a positive
72 * 'long long' integer. If this is not true, it fails with %EINVAL error code.
73 * Returns %0 in case of success and %-1 in case of failure.
75 static int read_positive_ll(const char *file
, long long *value
)
80 fd
= open(file
, O_RDONLY
);
84 rd
= read(fd
, buf
, sizeof(buf
));
86 sys_errmsg("cannot read \"%s\"", file
);
89 if (rd
== sizeof(buf
)) {
90 errmsg("contents of \"%s\" is too long", file
);
96 if (sscanf(buf
, "%lld\n", value
) != 1) {
97 errmsg("cannot read integer from \"%s\"\n", file
);
103 errmsg("negative value %lld in \"%s\"", *value
, file
);
109 sys_errmsg("close failed on \"%s\"", file
);
121 * read_positive_int - read a positive 'int' value from a file.
122 * @file: the file to read from
123 * @value: the result is stored here
125 * This function is the same as 'read_positive_ll()', but it reads an 'int'
126 * value, not 'long long'.
128 static int read_positive_int(const char *file
, int *value
)
132 if (read_positive_ll(file
, &res
))
135 /* Make sure the value is not too big */
137 errmsg("value %lld read from file \"%s\" is out of range",
148 * read_data - read data from a file.
149 * @file: the file to read from
150 * @buf: the buffer to read to
151 * @buf_len: buffer length
153 * This function returns number of read bytes in case of success and %-1 in
154 * case of failure. Note, if the file contains more then @buf_len bytes of
155 * date, this function fails with %EINVAL error code.
157 static int read_data(const char *file
, void *buf
, int buf_len
)
159 int fd
, rd
, tmp
, tmp1
;
161 fd
= open(file
, O_RDONLY
);
165 rd
= read(fd
, buf
, buf_len
);
167 sys_errmsg("cannot read \"%s\"", file
);
172 errmsg("contents of \"%s\" is too long", file
);
177 ((char *)buf
)[rd
] = '\0';
179 /* Make sure all data is read */
180 tmp1
= read(fd
, &tmp
, 1);
182 sys_errmsg("cannot read \"%s\"", file
);
186 errmsg("file \"%s\" contains too much data (> %d bytes)",
193 sys_errmsg("close failed on \"%s\"", file
);
205 * read_major - read major and minor numbers from a file.
206 * @file: name of the file to read from
207 * @major: major number is returned here
208 * @minor: minor number is returned here
210 * This function returns % in case of succes, and %-1 in case of failure.
212 static int read_major(const char *file
, int *major
, int *minor
)
217 ret
= read_data(file
, buf
, 50);
221 ret
= sscanf(buf
, "%d:%d\n", major
, minor
);
224 errmsg("\"%s\" does not have major:minor format", file
);
228 if (*major
< 0 || *minor
< 0) {
230 errmsg("bad major:minor %d:%d in \"%s\"",
231 *major
, *minor
, file
);
239 * dev_read_int - read a positive 'int' value from an UBI device sysfs file.
240 * @patt: file pattern to read from
241 * @dev_num: UBI device number
242 * @value: the result is stored here
244 * This function returns %0 in case of success and %-1 in case of failure.
246 static int dev_read_int(const char *patt
, int dev_num
, int *value
)
248 char file
[strlen(patt
) + 50];
250 sprintf(file
, patt
, dev_num
);
251 return read_positive_int(file
, value
);
255 * vol_read_int - read a positive 'int' value from an UBI volume sysfs file.
256 * @patt: file pattern to read from
257 * @dev_num: UBI device number
259 * @value: the result is stored here
261 * This function returns %0 in case of success and %-1 in case of failure.
263 static int vol_read_int(const char *patt
, int dev_num
, int vol_id
, int *value
)
265 char file
[strlen(patt
) + 100];
267 sprintf(file
, patt
, dev_num
, vol_id
);
268 return read_positive_int(file
, value
);
272 * dev_read_ll - read a positive 'long long' value from an UBI device sysfs file.
273 * @patt: file pattern to read from
274 * @dev_num: UBI device number
275 * @value: the result is stored here
277 * This function returns %0 in case of success and %-1 in case of failure.
279 static int dev_read_ll(const char *patt
, int dev_num
, long long *value
)
281 char file
[strlen(patt
) + 50];
283 sprintf(file
, patt
, dev_num
);
284 return read_positive_ll(file
, value
);
288 * vol_read_ll - read a positive 'long long' value from an UBI volume sysfs file.
289 * @patt: file pattern to read from
290 * @dev_num: UBI device number
292 * @value: the result is stored here
294 * This function returns %0 in case of success and %-1 in case of failure.
296 static int vol_read_ll(const char *patt
, int dev_num
, int vol_id
,
299 char file
[strlen(patt
) + 100];
301 sprintf(file
, patt
, dev_num
, vol_id
);
302 return read_positive_ll(file
, value
);
306 * vol_read_data - read data from an UBI volume's sysfs file.
307 * @patt: file pattern to read from
308 * @dev_num: UBI device number
310 * @buf: buffer to read to
311 * @buf_len: buffer length
313 * This function returns number of read bytes in case of success and %-1 in
316 static int vol_read_data(const char *patt
, int dev_num
, int vol_id
, void *buf
,
319 char file
[strlen(patt
) + 100];
321 sprintf(file
, patt
, dev_num
, vol_id
);
322 return read_data(file
, buf
, buf_len
);
326 * dev_get_major - get major and minor numbers of an UBI device.
327 * @lib: libubi descriptor
328 * @dev_num: UBI device number
329 * @major: major number is returned here
330 * @minor: minor number is returned here
332 * This function returns zero in case of succes and %-1 in case of failure.
334 static int dev_get_major(struct libubi
*lib
, int dev_num
, int *major
, int *minor
)
336 char file
[strlen(lib
->dev_dev
) + 50];
338 sprintf(file
, lib
->dev_dev
, dev_num
);
339 return read_major(file
, major
, minor
);
343 * vol_get_major - get major and minor numbers of an UBI volume.
344 * @lib: libubi descriptor
345 * @dev_num: UBI device number
347 * @major: major number is returned here
348 * @minor: minor number is returned here
350 * This function returns zero in case of succes and %-1 in case of failure.
352 static int vol_get_major(struct libubi
*lib
, int dev_num
, int vol_id
,
353 int *major
, int *minor
)
355 char file
[strlen(lib
->vol_dev
) + 100];
357 sprintf(file
, lib
->vol_dev
, dev_num
, vol_id
);
358 return read_major(file
, major
, minor
);
362 * vol_node2nums - find UBI device number and volume ID by volume device node
364 * @lib: UBI library descriptor
365 * @node: UBI character device node name
366 * @dev_num: UBI device number is returned here
367 * @vol_id: volume ID is returned hers
369 * This function returns zero in case of succes and %-1 in case of failure.
371 static int vol_node2nums(struct libubi
*lib
, const char *node
, int *dev_num
,
375 struct ubi_info info
;
376 int i
, fd
, major
, minor
;
377 char file
[strlen(lib
->ubi_vol
) + 100];
379 if (stat(node
, &st
)) {
380 sys_errmsg("cannot get information about \"%s\"",
384 if (!S_ISCHR(st
.st_mode
)) {
386 errmsg("\"%s\" is not a character device", node
);
390 major
= major(st
.st_rdev
);
391 minor
= minor(st
.st_rdev
);
395 errmsg("\"%s\" is not a volume character device", node
);
399 if (ubi_get_info((libubi_t
*)lib
, &info
))
402 for (i
= info
.lowest_dev_num
; i
<= info
.highest_dev_num
; i
++) {
403 int major1
, minor1
, ret
;
405 ret
= dev_get_major(lib
, i
, &major1
, &minor1
);
416 if (i
> info
.highest_dev_num
) {
421 /* Make sure this UBI volume exists */
422 sprintf(file
, lib
->ubi_vol
, i
, minor
- 1);
423 fd
= open(file
, O_RDONLY
);
436 * dev_node2num - find UBI device number by its character device node.
437 * @lib: UBI library descriptor
438 * @node: UBI character device node name
439 * @dev_num: UBI device number is returned here
441 * This function returns %0 in case of success and %-1 in case of failure.
443 static int dev_node2num(struct libubi
*lib
, const char *node
, int *dev_num
)
446 struct ubi_info info
;
449 if (stat(node
, &st
)) {
450 sys_errmsg("cannot get information about \"%s\"", node
);
453 if (!S_ISCHR(st
.st_mode
)) {
455 errmsg("\"%s\" is not a character device", node
);
459 major
= major(st
.st_rdev
);
460 minor
= minor(st
.st_rdev
);
464 errmsg("\"%s\" is not an UBI character device", node
);
468 if (ubi_get_info((libubi_t
*)lib
, &info
))
471 for (i
= info
.lowest_dev_num
; i
<= info
.highest_dev_num
; i
++) {
472 int major1
, minor1
, ret
;
474 ret
= dev_get_major(lib
, i
, &major1
, &minor1
);
481 if (major1
== major
) {
483 errmsg("UBI character device minor number is "
484 "%d, but must be 0", minor1
);
498 int mtd_num2ubi_dev(libubi_t desc
, int mtd_num
, int *dev_num
)
500 struct ubi_info info
;
501 int i
, ret
, mtd_num1
;
502 struct libubi
*lib
= desc
;
504 if (ubi_get_info(desc
, &info
))
507 for (i
= info
.lowest_dev_num
; i
<= info
.highest_dev_num
; i
++) {
508 ret
= dev_read_int(lib
->dev_mtd_num
, i
, &mtd_num1
);
515 if (mtd_num1
== mtd_num
) {
526 libubi_t
libubi_open(void)
531 lib
= calloc(1, sizeof(struct libubi
));
535 lib
->sysfs_ctrl
= mkpath("/sys", SYSFS_CTRL
);
536 if (!lib
->sysfs_ctrl
)
539 lib
->ctrl_dev
= mkpath(lib
->sysfs_ctrl
, CTRL_DEV
);
543 lib
->sysfs_ubi
= mkpath("/sys", SYSFS_UBI
);
547 /* Make sure UBI is present */
548 fd
= open(lib
->sysfs_ubi
, O_RDONLY
);
555 sys_errmsg("close failed on \"%s\"", lib
->sysfs_ubi
);
559 lib
->ubi_dev
= mkpath(lib
->sysfs_ubi
, UBI_DEV_NAME_PATT
);
563 lib
->ubi_version
= mkpath(lib
->sysfs_ubi
, UBI_VER
);
564 if (!lib
->ubi_version
)
567 lib
->dev_dev
= mkpath(lib
->ubi_dev
, DEV_DEV
);
571 lib
->dev_avail_ebs
= mkpath(lib
->ubi_dev
, DEV_AVAIL_EBS
);
572 if (!lib
->dev_avail_ebs
)
575 lib
->dev_total_ebs
= mkpath(lib
->ubi_dev
, DEV_TOTAL_EBS
);
576 if (!lib
->dev_total_ebs
)
579 lib
->dev_bad_count
= mkpath(lib
->ubi_dev
, DEV_BAD_COUNT
);
580 if (!lib
->dev_bad_count
)
583 lib
->dev_eb_size
= mkpath(lib
->ubi_dev
, DEV_EB_SIZE
);
584 if (!lib
->dev_eb_size
)
587 lib
->dev_max_ec
= mkpath(lib
->ubi_dev
, DEV_MAX_EC
);
588 if (!lib
->dev_max_ec
)
591 lib
->dev_bad_rsvd
= mkpath(lib
->ubi_dev
, DEV_MAX_RSVD
);
592 if (!lib
->dev_bad_rsvd
)
595 lib
->dev_max_vols
= mkpath(lib
->ubi_dev
, DEV_MAX_VOLS
);
596 if (!lib
->dev_max_vols
)
599 lib
->dev_min_io_size
= mkpath(lib
->ubi_dev
, DEV_MIN_IO_SIZE
);
600 if (!lib
->dev_min_io_size
)
603 lib
->dev_mtd_num
= mkpath(lib
->ubi_dev
, DEV_MTD_NUM
);
604 if (!lib
->dev_mtd_num
)
607 lib
->ubi_vol
= mkpath(lib
->sysfs_ubi
, UBI_VOL_NAME_PATT
);
611 lib
->vol_type
= mkpath(lib
->ubi_vol
, VOL_TYPE
);
615 lib
->vol_dev
= mkpath(lib
->ubi_vol
, VOL_DEV
);
619 lib
->vol_alignment
= mkpath(lib
->ubi_vol
, VOL_ALIGNMENT
);
620 if (!lib
->vol_alignment
)
623 lib
->vol_data_bytes
= mkpath(lib
->ubi_vol
, VOL_DATA_BYTES
);
624 if (!lib
->vol_data_bytes
)
627 lib
->vol_rsvd_ebs
= mkpath(lib
->ubi_vol
, VOL_RSVD_EBS
);
628 if (!lib
->vol_rsvd_ebs
)
631 lib
->vol_eb_size
= mkpath(lib
->ubi_vol
, VOL_EB_SIZE
);
632 if (!lib
->vol_eb_size
)
635 lib
->vol_corrupted
= mkpath(lib
->ubi_vol
, VOL_CORRUPTED
);
636 if (!lib
->vol_corrupted
)
639 lib
->vol_name
= mkpath(lib
->ubi_vol
, VOL_NAME
);
643 if (read_positive_int(lib
->ubi_version
, &version
))
645 if (version
!= LIBUBI_UBI_VERSION
) {
646 errmsg("this library was made for UBI version %d, but UBI "
647 "version %d is detected\n", LIBUBI_UBI_VERSION
, version
);
654 libubi_close((libubi_t
)lib
);
658 void libubi_close(libubi_t desc
)
660 struct libubi
*lib
= (struct libubi
*)desc
;
663 free(lib
->vol_corrupted
);
664 free(lib
->vol_eb_size
);
665 free(lib
->vol_rsvd_ebs
);
666 free(lib
->vol_data_bytes
);
667 free(lib
->vol_alignment
);
671 free(lib
->dev_mtd_num
);
672 free(lib
->dev_min_io_size
);
673 free(lib
->dev_max_vols
);
674 free(lib
->dev_bad_rsvd
);
675 free(lib
->dev_max_ec
);
676 free(lib
->dev_eb_size
);
677 free(lib
->dev_bad_count
);
678 free(lib
->dev_total_ebs
);
679 free(lib
->dev_avail_ebs
);
681 free(lib
->ubi_version
);
683 free(lib
->sysfs_ubi
);
685 free(lib
->sysfs_ctrl
);
690 * do_attach - perform the actual attach operation.
691 * @node: name of the UBI control character device node
694 * This function performs the actual UBI attach operation. Returns %0 in case of
695 * success and %-1 in case of failure. @r->ubi_num contains newly created UBI
698 static int do_attach(const char *node
, const struct ubi_attach_req
*r
)
702 fd
= open(node
, O_RDONLY
);
704 sys_errmsg("cannot open \"%s\"", node
);
707 ret
= ioctl(fd
, UBI_IOCATT
, r
);
712 #ifdef UDEV_SETTLE_HACK
713 // if (system("udevsettle") == -1)
720 #ifndef MTD_CHAR_MAJOR
722 * This is taken from kernel <linux/mtd/mtd.h> and is unlikely to change anytime
725 #define MTD_CHAR_MAJOR 90
729 * mtd_node_to_num - converts device node to MTD number.
730 * @mtd_dev_node: path to device node to convert
732 * This function converts given @mtd_dev_node to MTD device number.
733 * @mtd_dev_node should contain path to the MTD device node. Returns MTD device
734 * number in case of success and %-1 in case of failure (errno is set).
736 static int mtd_node_to_num(const char *mtd_dev_node
)
741 if (stat(mtd_dev_node
, &sb
) < 0) {
742 sys_errmsg("cannot stat \"%s\"", mtd_dev_node
);
746 if (!S_ISCHR(sb
.st_mode
)) {
748 sys_errmsg("\"%s\" is not a character device",
753 major
= major(sb
.st_rdev
);
754 minor
= minor(sb
.st_rdev
);
756 if (major
!= MTD_CHAR_MAJOR
) {
758 sys_errmsg("\"%s\" is not an MTD device", mtd_dev_node
);
765 int ubi_attach(libubi_t desc
, const char *node
, struct ubi_attach_request
*req
)
767 struct ubi_attach_req r
;
772 if (req
->mtd_dev_node
) {
774 * User has passed path to device node. Lets find out MTD
775 * device number of the device and update req->mtd_num with it
777 req
->mtd_num
= mtd_node_to_num(req
->mtd_dev_node
);
778 if (req
->mtd_num
== -1)
782 memset(&r
, 0, sizeof(struct ubi_attach_req
));
783 r
.ubi_num
= req
->dev_num
;
784 r
.mtd_num
= req
->mtd_num
;
785 r
.vid_hdr_offset
= req
->vid_hdr_offset
;
787 if (req
->max_beb_per1024
) {
789 * We first have to check if the running kernel supports the
790 * 'max_beb_per1024' parameter. To do this, we invoke the
791 * "attach" ioctl 2 times: first with incorrect value %-1 of
794 * If the ioctl succeeds, it means that the kernel doesn't
795 * support the feature and just ignored our 'max_beb_per1024'
798 * If the ioctl returns -EINVAL, we assume this is because
799 * 'max_beb_per1024' was set to -1, and we invoke the ioctl for
800 * the second time with the 'max_beb_per1024' value.
802 r
.max_beb_per1024
= -1;
803 ret
= do_attach(node
, &r
);
805 req
->dev_num
= r
.ubi_num
;
807 * The call succeeded. It means that the kernel ignored
808 * 'max_beb_per1024' parameter.
811 } else if (errno
!= EINVAL
)
815 r
.max_beb_per1024
= req
->max_beb_per1024
;
817 ret
= do_attach(node
, &r
);
819 req
->dev_num
= r
.ubi_num
;
824 int ubi_detach_mtd(libubi_t desc
, const char *node
, int mtd_num
)
828 ret
= mtd_num2ubi_dev(desc
, mtd_num
, &ubi_dev
);
834 return ubi_remove_dev(desc
, node
, ubi_dev
);
837 int ubi_detach(libubi_t desc
, const char *node
, const char *mtd_dev_node
)
846 mtd_num
= mtd_node_to_num(mtd_dev_node
);
850 return ubi_detach_mtd(desc
, node
, mtd_num
);
853 int ubi_remove_dev(libubi_t desc
, const char *node
, int ubi_dev
)
859 fd
= open(node
, O_RDONLY
);
861 sys_errmsg("cannot open \"%s\"", node
);
864 ret
= ioctl(fd
, UBI_IOCFDET
, &ubi_dev
);
868 #ifdef UDEV_SETTLE_HACK
869 // if (system("udevsettle") == -1)
879 int ubi_probe_node(libubi_t desc
, const char *node
)
882 struct ubi_info info
;
883 int i
, fd
, major
, minor
;
884 struct libubi
*lib
= (struct libubi
*)desc
;
885 char file
[strlen(lib
->ubi_vol
) + 100];
887 if (stat(node
, &st
)) {
888 sys_errmsg("cannot get information about \"%s\"", node
);
892 if (!S_ISCHR(st
.st_mode
)) {
893 errmsg("\"%s\" is not a character device", node
);
898 major
= major(st
.st_rdev
);
899 minor
= minor(st
.st_rdev
);
901 if (ubi_get_info((libubi_t
*)lib
, &info
))
904 for (i
= info
.lowest_dev_num
; i
<= info
.highest_dev_num
; i
++) {
905 int major1
, minor1
, ret
;
907 ret
= dev_get_major(lib
, i
, &major1
, &minor1
);
920 if (i
> info
.highest_dev_num
)
926 /* This is supposdely an UBI volume device node */
927 sprintf(file
, lib
->ubi_vol
, i
, minor
- 1);
928 fd
= open(file
, O_RDONLY
);
935 errmsg("\"%s\" has major:minor %d:%d, but this does not correspond to "
936 "any existing UBI device or volume", node
, major
, minor
);
941 int ubi_get_info(libubi_t desc
, struct ubi_info
*info
)
944 struct dirent
*dirent
;
945 struct libubi
*lib
= (struct libubi
*)desc
;
947 memset(info
, 0, sizeof(struct ubi_info
));
949 if (read_major(lib
->ctrl_dev
, &info
->ctrl_major
, &info
->ctrl_minor
)) {
951 * Older UBI versions did not have control device, so we do not
952 * panic here for compatibility reasons. May be few years later
953 * we could return -1 here, but for now just set major:minor to
956 info
->ctrl_major
= info
->ctrl_minor
= -1;
960 * We have to scan the UBI sysfs directory to identify how many UBI
961 * devices are present.
963 sysfs_ubi
= opendir(lib
->sysfs_ubi
);
967 info
->lowest_dev_num
= INT_MAX
;
973 dirent
= readdir(sysfs_ubi
);
977 if (strlen(dirent
->d_name
) >= 255) {
978 errmsg("invalid entry in %s: \"%s\"",
979 lib
->sysfs_ubi
, dirent
->d_name
);
984 ret
= sscanf(dirent
->d_name
, UBI_DEV_NAME_PATT
"%s",
987 info
->dev_count
+= 1;
988 if (dev_num
> info
->highest_dev_num
)
989 info
->highest_dev_num
= dev_num
;
990 if (dev_num
< info
->lowest_dev_num
)
991 info
->lowest_dev_num
= dev_num
;
995 if (!dirent
&& errno
) {
996 sys_errmsg("readdir failed on \"%s\"", lib
->sysfs_ubi
);
1000 if (closedir(sysfs_ubi
)) {
1001 sys_errmsg("closedir failed on \"%s\"", lib
->sysfs_ubi
);
1004 if (info
->lowest_dev_num
== INT_MAX
)
1005 info
->lowest_dev_num
= 0;
1007 if (read_positive_int(lib
->ubi_version
, &info
->version
))
1013 closedir(sysfs_ubi
);
1017 int ubi_mkvol(libubi_t desc
, const char *node
, struct ubi_mkvol_request
*req
)
1020 struct ubi_mkvol_req r
;
1023 memset(&r
, 0, sizeof(struct ubi_mkvol_req
));
1026 r
.vol_id
= req
->vol_id
;
1027 r
.alignment
= req
->alignment
;
1028 r
.bytes
= req
->bytes
;
1029 r
.vol_type
= req
->vol_type
;
1031 n
= strlen(req
->name
);
1032 if (n
> UBI_MAX_VOLUME_NAME
)
1035 strncpy(r
.name
, req
->name
, UBI_MAX_VOLUME_NAME
+ 1);
1039 fd
= open(node
, O_RDONLY
);
1041 sys_errmsg("cannot open \"%s\"", node
);
1044 ret
= ioctl(fd
, UBI_IOCMKVOL
, &r
);
1051 req
->vol_id
= r
.vol_id
;
1053 #ifdef UDEV_SETTLE_HACK
1054 // if (system("udevsettle") == -1)
1062 int ubi_rmvol(libubi_t desc
, const char *node
, int vol_id
)
1067 fd
= open(node
, O_RDONLY
);
1069 sys_errmsg("cannot open \"%s\"", node
);
1073 ret
= ioctl(fd
, UBI_IOCRMVOL
, &vol_id
);
1081 #ifdef UDEV_SETTLE_HACK
1082 // if (system("udevsettle") == -1)
1090 int ubi_rnvols(libubi_t desc
, const char *node
, struct ubi_rnvol_req
*rnvol
)
1095 fd
= open(node
, O_RDONLY
);
1099 ret
= ioctl(fd
, UBI_IOCRNVOL
, rnvol
);
1107 #ifdef UDEV_SETTLE_HACK
1108 // if (system("udevsettle") == -1)
1116 int ubi_rsvol(libubi_t desc
, const char *node
, int vol_id
, long long bytes
)
1119 struct ubi_rsvol_req req
;
1122 fd
= open(node
, O_RDONLY
);
1124 sys_errmsg("cannot open \"%s\"", node
);
1128 req
.vol_id
= vol_id
;
1130 ret
= ioctl(fd
, UBI_IOCRSVOL
, &req
);
1135 int ubi_update_start(libubi_t desc
, int fd
, long long bytes
)
1138 if (ioctl(fd
, UBI_IOCVOLUP
, &bytes
))
1143 int ubi_leb_change_start(libubi_t desc
, int fd
, int lnum
, int bytes
)
1145 struct ubi_leb_change_req req
;
1148 memset(&req
, 0, sizeof(struct ubi_leb_change_req
));
1153 if (ioctl(fd
, UBI_IOCEBCH
, &req
))
1158 int ubi_dev_present(libubi_t desc
, int dev_num
)
1161 struct libubi
*lib
= (struct libubi
*)desc
;
1162 char file
[strlen(lib
->ubi_dev
) + 50];
1164 sprintf(file
, lib
->ubi_dev
, dev_num
);
1165 return !stat(file
, &st
);
1168 int ubi_get_dev_info1(libubi_t desc
, int dev_num
, struct ubi_dev_info
*info
)
1171 struct dirent
*dirent
;
1172 struct libubi
*lib
= (struct libubi
*)desc
;
1174 memset(info
, 0, sizeof(struct ubi_dev_info
));
1175 info
->dev_num
= dev_num
;
1177 if (!ubi_dev_present(desc
, dev_num
))
1180 sysfs_ubi
= opendir(lib
->sysfs_ubi
);
1184 info
->lowest_vol_id
= INT_MAX
;
1187 int vol_id
, ret
, devno
;
1191 dirent
= readdir(sysfs_ubi
);
1195 if (strlen(dirent
->d_name
) >= 255) {
1196 errmsg("invalid entry in %s: \"%s\"",
1197 lib
->sysfs_ubi
, dirent
->d_name
);
1201 ret
= sscanf(dirent
->d_name
, UBI_VOL_NAME_PATT
"%s", &devno
, &vol_id
, tmp_buf
);
1202 if (ret
== 2 && devno
== dev_num
) {
1203 info
->vol_count
+= 1;
1204 if (vol_id
> info
->highest_vol_id
)
1205 info
->highest_vol_id
= vol_id
;
1206 if (vol_id
< info
->lowest_vol_id
)
1207 info
->lowest_vol_id
= vol_id
;
1211 if (!dirent
&& errno
) {
1212 sys_errmsg("readdir failed on \"%s\"", lib
->sysfs_ubi
);
1216 if (closedir(sysfs_ubi
)) {
1217 sys_errmsg("closedir failed on \"%s\"", lib
->sysfs_ubi
);
1220 if (info
->lowest_vol_id
== INT_MAX
)
1221 info
->lowest_vol_id
= 0;
1223 if (dev_get_major(lib
, dev_num
, &info
->major
, &info
->minor
))
1226 if (dev_read_int(lib
->dev_mtd_num
, dev_num
, &info
->mtd_num
))
1228 if (dev_read_int(lib
->dev_avail_ebs
, dev_num
, &info
->avail_lebs
))
1230 if (dev_read_int(lib
->dev_total_ebs
, dev_num
, &info
->total_lebs
))
1232 if (dev_read_int(lib
->dev_bad_count
, dev_num
, &info
->bad_count
))
1234 if (dev_read_int(lib
->dev_eb_size
, dev_num
, &info
->leb_size
))
1236 if (dev_read_int(lib
->dev_bad_rsvd
, dev_num
, &info
->bad_rsvd
))
1238 if (dev_read_ll(lib
->dev_max_ec
, dev_num
, &info
->max_ec
))
1240 if (dev_read_int(lib
->dev_max_vols
, dev_num
, &info
->max_vol_count
))
1242 if (dev_read_int(lib
->dev_min_io_size
, dev_num
, &info
->min_io_size
))
1245 info
->avail_bytes
= (long long)info
->avail_lebs
* info
->leb_size
;
1246 info
->total_bytes
= (long long)info
->total_lebs
* info
->leb_size
;
1251 closedir(sysfs_ubi
);
1255 int ubi_get_dev_info(libubi_t desc
, const char *node
, struct ubi_dev_info
*info
)
1257 int err
, dev_num
= 0;
1258 struct libubi
*lib
= (struct libubi
*)desc
;
1260 err
= ubi_probe_node(desc
, node
);
1267 if (dev_node2num(lib
, node
, &dev_num
))
1270 return ubi_get_dev_info1(desc
, dev_num
, info
);
1273 int ubi_get_vol_info1(libubi_t desc
, int dev_num
, int vol_id
,
1274 struct ubi_vol_info
*info
)
1277 struct libubi
*lib
= (struct libubi
*)desc
;
1280 memset(info
, 0, sizeof(struct ubi_vol_info
));
1281 info
->dev_num
= dev_num
;
1282 info
->vol_id
= vol_id
;
1284 if (vol_get_major(lib
, dev_num
, vol_id
, &info
->major
, &info
->minor
))
1287 ret
= vol_read_data(lib
->vol_type
, dev_num
, vol_id
, buf
, 50);
1291 if (strncmp(buf
, "static\n", ret
) == 0)
1292 info
->type
= UBI_STATIC_VOLUME
;
1293 else if (strncmp(buf
, "dynamic\n", ret
) == 0)
1294 info
->type
= UBI_DYNAMIC_VOLUME
;
1296 errmsg("bad value at \"%s\"", buf
);
1301 ret
= vol_read_int(lib
->vol_alignment
, dev_num
, vol_id
,
1305 ret
= vol_read_ll(lib
->vol_data_bytes
, dev_num
, vol_id
,
1309 ret
= vol_read_int(lib
->vol_rsvd_ebs
, dev_num
, vol_id
, &info
->rsvd_lebs
);
1312 ret
= vol_read_int(lib
->vol_eb_size
, dev_num
, vol_id
, &info
->leb_size
);
1315 ret
= vol_read_int(lib
->vol_corrupted
, dev_num
, vol_id
,
1319 info
->rsvd_bytes
= (long long)info
->leb_size
* info
->rsvd_lebs
;
1321 ret
= vol_read_data(lib
->vol_name
, dev_num
, vol_id
, &info
->name
,
1322 UBI_VOL_NAME_MAX
+ 2);
1326 info
->name
[ret
- 1] = '\0';
1330 int ubi_get_vol_info(libubi_t desc
, const char *node
, struct ubi_vol_info
*info
)
1332 int err
, vol_id
= 0, dev_num
= 0;
1333 struct libubi
*lib
= (struct libubi
*)desc
;
1335 err
= ubi_probe_node(desc
, node
);
1342 if (vol_node2nums(lib
, node
, &dev_num
, &vol_id
))
1345 return ubi_get_vol_info1(desc
, dev_num
, vol_id
, info
);
1348 int ubi_get_vol_info1_nm(libubi_t desc
, int dev_num
, const char *name
,
1349 struct ubi_vol_info
*info
)
1352 unsigned int nlen
= strlen(name
);
1353 struct ubi_dev_info dev_info
;
1356 errmsg("bad \"name\" input parameter");
1361 err
= ubi_get_dev_info1(desc
, dev_num
, &dev_info
);
1365 for (i
= dev_info
.lowest_vol_id
;
1366 i
<= dev_info
.highest_vol_id
; i
++) {
1367 err
= ubi_get_vol_info1(desc
, dev_num
, i
, info
);
1369 if (errno
== ENOENT
)
1374 if (nlen
== strlen(info
->name
) && !strcmp(name
, info
->name
))
1382 int ubi_set_property(int fd
, uint8_t property
, uint64_t value
)
1384 struct ubi_set_vol_prop_req r
;
1386 memset(&r
, 0, sizeof(struct ubi_set_vol_prop_req
));
1387 r
.property
= property
;
1390 return ioctl(fd
, UBI_IOCSETVOLPROP
, &r
);
1393 int ubi_leb_unmap(int fd
, int lnum
)
1395 return ioctl(fd
, UBI_IOCEBUNMAP
, &lnum
);
1398 int ubi_is_mapped(int fd
, int lnum
)
1400 return ioctl(fd
, UBI_IOCEBISMAP
, &lnum
);