summaryrefslogtreecommitdiff
path: root/ubi-utils/old-utils/src/libubi.c
diff options
context:
space:
mode:
Diffstat (limited to 'ubi-utils/old-utils/src/libubi.c')
-rw-r--r--ubi-utils/old-utils/src/libubi.c915
1 files changed, 0 insertions, 915 deletions
diff --git a/ubi-utils/old-utils/src/libubi.c b/ubi-utils/old-utils/src/libubi.c
deleted file mode 100644
index a536b47..0000000
--- a/ubi-utils/old-utils/src/libubi.c
+++ /dev/null
@@ -1,915 +0,0 @@
-/*
- * 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: Artem B. Bityutskiy
- *
- * UBI (Unsorted Block Images) library.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-#include <limits.h>
-#include "libubi.h"
-#include "libubi_int.h"
-
-libubi_t libubi_open(void)
-{
- int fd, version;
- struct libubi *lib;
-
- lib = calloc(1, sizeof(struct libubi));
- if (!lib)
- return NULL;
-
- /* TODO: this must be discovered instead */
- lib->sysfs = strdup("/sys");
- if (!lib->sysfs)
- goto error;
-
- lib->sysfs_ubi = mkpath(lib->sysfs, SYSFS_UBI);
- if (!lib->sysfs_ubi)
- goto error;
-
- /* Make sure UBI is present */
- fd = open(lib->sysfs_ubi, O_RDONLY);
- if (fd == -1)
- goto error;
- close(fd);
-
- lib->ubi_dev = mkpath(lib->sysfs_ubi, UBI_DEV_NAME_PATT);
- if (!lib->ubi_dev)
- goto error;
-
- lib->ubi_version = mkpath(lib->sysfs_ubi, UBI_VER);
- if (!lib->ubi_version)
- goto error;
-
- lib->dev_dev = mkpath(lib->ubi_dev, DEV_DEV);
- if (!lib->dev_dev)
- goto error;
-
- lib->dev_avail_ebs = mkpath(lib->ubi_dev, DEV_AVAIL_EBS);
- if (!lib->dev_avail_ebs)
- goto error;
-
- lib->dev_total_ebs = mkpath(lib->ubi_dev, DEV_TOTAL_EBS);
- if (!lib->dev_total_ebs)
- goto error;
-
- lib->dev_bad_count = mkpath(lib->ubi_dev, DEV_BAD_COUNT);
- if (!lib->dev_bad_count)
- goto error;
-
- lib->dev_eb_size = mkpath(lib->ubi_dev, DEV_EB_SIZE);
- if (!lib->dev_eb_size)
- goto error;
-
- lib->dev_max_ec = mkpath(lib->ubi_dev, DEV_MAX_EC);
- if (!lib->dev_max_ec)
- goto error;
-
- lib->dev_bad_rsvd = mkpath(lib->ubi_dev, DEV_MAX_RSVD);
- if (!lib->dev_bad_rsvd)
- goto error;
-
- lib->dev_max_vols = mkpath(lib->ubi_dev, DEV_MAX_VOLS);
- if (!lib->dev_max_vols)
- goto error;
-
- lib->dev_min_io_size = mkpath(lib->ubi_dev, DEV_MIN_IO_SIZE);
- if (!lib->dev_min_io_size)
- goto error;
-
- lib->ubi_vol = mkpath(lib->sysfs_ubi, UBI_VOL_NAME_PATT);
- if (!lib->ubi_vol)
- goto error;
-
- lib->vol_type = mkpath(lib->ubi_vol, VOL_TYPE);
- if (!lib->vol_type)
- goto error;
-
- lib->vol_dev = mkpath(lib->ubi_vol, VOL_DEV);
- if (!lib->vol_dev)
- goto error;
-
- lib->vol_alignment = mkpath(lib->ubi_vol, VOL_ALIGNMENT);
- if (!lib->vol_alignment)
- goto error;
-
- lib->vol_data_bytes = mkpath(lib->ubi_vol, VOL_DATA_BYTES);
- if (!lib->vol_data_bytes)
- goto error;
-
- lib->vol_rsvd_ebs = mkpath(lib->ubi_vol, VOL_RSVD_EBS);
- if (!lib->vol_rsvd_ebs)
- goto error;
-
- lib->vol_eb_size = mkpath(lib->ubi_vol, VOL_EB_SIZE);
- if (!lib->vol_eb_size)
- goto error;
-
- lib->vol_corrupted = mkpath(lib->ubi_vol, VOL_CORRUPTED);
- if (!lib->vol_corrupted)
- goto error;
-
- lib->vol_name = mkpath(lib->ubi_vol, VOL_NAME);
- if (!lib->vol_name)
- goto error;
-
- if (read_int(lib->ubi_version, &version))
- goto error;
- if (version != LIBUBI_UBI_VERSION) {
- fprintf(stderr, "LIBUBI: this library was made for UBI version "
- "%d, but UBI version %d is detected\n",
- LIBUBI_UBI_VERSION, version);
- goto error;
- }
-
- return lib;
-
-error:
- free(lib->vol_corrupted);
- free(lib->vol_eb_size);
- free(lib->vol_rsvd_ebs);
- free(lib->vol_data_bytes);
- free(lib->vol_alignment);
- free(lib->vol_dev);
- free(lib->vol_type);
- free(lib->ubi_vol);
- free(lib->dev_min_io_size);
- free(lib->dev_max_vols);
- free(lib->dev_bad_rsvd);
- free(lib->dev_max_ec);
- free(lib->dev_eb_size);
- free(lib->dev_bad_count);
- free(lib->dev_total_ebs);
- free(lib->dev_avail_ebs);
- free(lib->dev_dev);
- free(lib->ubi_version);
- free(lib->ubi_dev);
- free(lib->sysfs_ubi);
- free(lib->sysfs);
- free(lib);
- return NULL;
-}
-
-void libubi_close(libubi_t desc)
-{
- struct libubi *lib = (struct libubi *)desc;
-
- free(lib->vol_name);
- free(lib->vol_corrupted);
- free(lib->vol_eb_size);
- free(lib->vol_rsvd_ebs);
- free(lib->vol_data_bytes);
- free(lib->vol_alignment);
- free(lib->vol_dev);
- free(lib->vol_type);
- free(lib->ubi_vol);
- free(lib->dev_min_io_size);
- free(lib->dev_max_vols);
- free(lib->dev_bad_rsvd);
- free(lib->dev_max_ec);
- free(lib->dev_eb_size);
- free(lib->dev_bad_count);
- free(lib->dev_total_ebs);
- free(lib->dev_avail_ebs);
- free(lib->dev_dev);
- free(lib->ubi_version);
- free(lib->ubi_dev);
- free(lib->sysfs_ubi);
- free(lib->sysfs);
- free(lib);
-}
-
-int ubi_get_info(libubi_t desc, struct ubi_info *info)
-{
- DIR *sysfs_ubi;
- struct dirent *dirent;
- struct libubi *lib = (struct libubi *)desc;
-
- memset(info, '\0', sizeof(struct ubi_info));
-
- /*
- * We have to scan the UBI sysfs directory to identify how many UBI
- * devices are present.
- */
- sysfs_ubi = opendir(lib->sysfs_ubi);
- if (!sysfs_ubi)
- return -1;
-
- info->lowest_dev_num = INT_MAX;
- while ((dirent = readdir(sysfs_ubi))) {
- char *name = &dirent->d_name[0];
- int dev_num, ret;
-
- ret = sscanf(name, UBI_DEV_NAME_PATT, &dev_num);
- if (ret == 1) {
- info->dev_count += 1;
- if (dev_num > info->highest_dev_num)
- info->highest_dev_num = dev_num;
- if (dev_num < info->lowest_dev_num)
- info->lowest_dev_num = dev_num;
- }
- }
-
- if (info->lowest_dev_num == INT_MAX)
- info->lowest_dev_num = 0;
-
- if (read_int(lib->ubi_version, &info->version))
- goto close;
-
- return closedir(sysfs_ubi);
-
-close:
- closedir(sysfs_ubi);
- return -1;
-}
-
-int ubi_mkvol(libubi_t desc, const char *node, struct ubi_mkvol_request *req)
-{
- int fd, ret;
- struct ubi_mkvol_req r;
- size_t n;
-
- desc = desc;
- r.vol_id = req->vol_id;
- r.alignment = req->alignment;
- r.bytes = req->bytes;
- r.vol_type = req->vol_type;
-
- n = strlen(req->name);
- if (n > UBI_MAX_VOLUME_NAME)
- return -1;
-
- strncpy(r.name, req->name, UBI_MAX_VOLUME_NAME + 1);
- r.name_len = n;
-
- fd = open(node, O_RDONLY);
- if (fd == -1)
- return -1;
-
- ret = ioctl(fd, UBI_IOCMKVOL, &r);
- if (!ret)
- req->vol_id = r.vol_id;
-
- close(fd);
- return ret;
-}
-
-int ubi_rmvol(libubi_t desc, const char *node, int vol_id)
-{
- int fd, ret;
-
- desc = desc;
- fd = open(node, O_RDONLY);
- if (fd == -1)
- return -1;
-
- ret = ioctl(fd, UBI_IOCRMVOL, &vol_id);
- close(fd);
- return ret;
-}
-
-int ubi_rsvol(libubi_t desc, const char *node, int vol_id, long long bytes)
-{
- int fd, ret;
- struct ubi_rsvol_req req;
-
- desc = desc;
- fd = open(node, O_RDONLY);
- if (fd == -1)
- return -1;
-
- req.bytes = bytes;
- req.vol_id = vol_id;
-
- ret = ioctl(fd, UBI_IOCRSVOL, &req);
- close(fd);
- return ret;
-}
-
-int ubi_update_start(libubi_t desc, int fd, long long bytes)
-{
- desc = desc;
- if (ioctl(fd, UBI_IOCVOLUP, &bytes))
- return -1;
- return 0;
-}
-
-int ubi_get_dev_info(libubi_t desc, const char *node, struct ubi_dev_info *info)
-{
- int dev_num;
- struct libubi *lib = (struct libubi *)desc;
-
- dev_num = find_dev_num(lib, node);
- if (dev_num == -1)
- return -1;
-
- return ubi_get_dev_info1(desc, dev_num, info);
-}
-
-int ubi_get_dev_info1(libubi_t desc, int dev_num, struct ubi_dev_info *info)
-{
- DIR *sysfs_ubi;
- struct dirent *dirent;
- struct libubi *lib = (struct libubi *)desc;
-
- memset(info, '\0', sizeof(struct ubi_dev_info));
- info->dev_num = dev_num;
-
- sysfs_ubi = opendir(lib->sysfs_ubi);
- if (!sysfs_ubi)
- return -1;
-
- info->lowest_vol_num = INT_MAX;
- while ((dirent = readdir(sysfs_ubi))) {
- char *name = &dirent->d_name[0];
- int vol_id, ret, devno;
-
- ret = sscanf(name, UBI_VOL_NAME_PATT, &devno, &vol_id);
- if (ret == 2 && devno == dev_num) {
- info->vol_count += 1;
- if (vol_id > info->highest_vol_num)
- info->highest_vol_num = vol_id;
- if (vol_id < info->lowest_vol_num)
- info->lowest_vol_num = vol_id;
- }
- }
-
- closedir(sysfs_ubi);
-
- if (info->lowest_vol_num == INT_MAX)
- info->lowest_vol_num = 0;
-
- if (dev_read_int(lib->dev_avail_ebs, dev_num, &info->avail_ebs))
- return -1;
- if (dev_read_int(lib->dev_total_ebs, dev_num, &info->total_ebs))
- return -1;
- if (dev_read_int(lib->dev_bad_count, dev_num, &info->bad_count))
- return -1;
- if (dev_read_int(lib->dev_eb_size, dev_num, &info->eb_size))
- return -1;
- if (dev_read_int(lib->dev_bad_rsvd, dev_num, &info->bad_rsvd))
- return -1;
- if (dev_read_ll(lib->dev_max_ec, dev_num, &info->max_ec))
- return -1;
- if (dev_read_int(lib->dev_max_vols, dev_num, &info->max_vol_count))
- return -1;
- if (dev_read_int(lib->dev_min_io_size, dev_num, &info->min_io_size))
- return -1;
-
- info->avail_bytes = info->avail_ebs * info->eb_size;
- info->total_bytes = info->total_ebs * info->eb_size;
-
- return 0;
-}
-
-int ubi_get_vol_info(libubi_t desc, const char *node, struct ubi_vol_info *info)
-{
- int vol_id, dev_num;
- struct libubi *lib = (struct libubi *)desc;
-
- dev_num = find_dev_num_vol(lib, node);
- if (dev_num == -1)
- return -1;
-
- vol_id = find_vol_num(lib, dev_num, node);
- if (vol_id == -1)
- return -1;
-
- return ubi_get_vol_info1(desc, dev_num, vol_id, info);
-}
-
-int ubi_get_vol_info1(libubi_t desc, int dev_num, int vol_id,
- struct ubi_vol_info *info)
-{
- int ret;
- struct libubi *lib = (struct libubi *)desc;
- char buf[50];
-
- memset(info, '\0', sizeof(struct ubi_vol_info));
- info->dev_num = dev_num;
- info->vol_id = vol_id;
-
- ret = vol_read_data(lib->vol_type, dev_num, vol_id, &buf[0], 50);
- if (ret < 0)
- return -1;
-
- if (strncmp(&buf[0], "static\n", ret) == 0)
- info->type = UBI_STATIC_VOLUME;
- else if (strncmp(&buf[0], "dynamic\n", ret) == 0)
- info->type = UBI_DYNAMIC_VOLUME;
- else {
- fprintf(stderr, "LIBUBI: bad value at sysfs file\n");
- errno = EINVAL;
- return -1;
- }
-
- ret = vol_read_int(lib->vol_alignment, dev_num, vol_id,
- &info->alignment);
- if (ret)
- return -1;
- ret = vol_read_ll(lib->vol_data_bytes, dev_num, vol_id,
- &info->data_bytes);
- if (ret)
- return -1;
- ret = vol_read_int(lib->vol_rsvd_ebs, dev_num, vol_id, &info->rsvd_ebs);
- if (ret)
- return -1;
- ret = vol_read_int(lib->vol_eb_size, dev_num, vol_id, &info->eb_size);
- if (ret)
- return -1;
- ret = vol_read_int(lib->vol_corrupted, dev_num, vol_id,
- &info->corrupted);
- if (ret)
- return -1;
- info->rsvd_bytes = info->eb_size * info->rsvd_ebs;
-
- ret = vol_read_data(lib->vol_name, dev_num, vol_id, &info->name,
- UBI_VOL_NAME_MAX + 2);
- if (ret < 0)
- return -1;
-
- info->name[ret - 1] = '\0';
- return 0;
-}
-
-/**
- * read_int - read an 'int' value from a file.
- *
- * @file the file to read from
- * @value the result is stored here
- *
- * This function returns %0 in case of success and %-1 in case of failure.
- */
-static int read_int(const char *file, int *value)
-{
- int fd, rd;
- char buf[50];
-
- fd = open(file, O_RDONLY);
- if (fd == -1)
- return -1;
-
- rd = read(fd, &buf[0], 50);
- if (rd == -1)
- goto error;
-
- if (sscanf(&buf[0], "%d\n", value) != 1) {
- /* This must be a UBI bug */
- fprintf(stderr, "LIBUBI: bad value at sysfs file\n");
- errno = EINVAL;
- goto error;
- }
-
- close(fd);
- return 0;
-
-error:
- close(fd);
- return -1;
-}
-
-/**
- * dev_read_int - read an 'int' value from an UBI device's sysfs file.
- *
- * @patt the file pattern to read from
- * @dev_num UBI device number
- * @value the result is stored here
- *
- * This function returns %0 in case of success and %-1 in case of failure.
- */
-static int dev_read_int(const char *patt, int dev_num, int *value)
-{
- int fd, rd;
- char buf[50];
- char file[strlen(patt) + 50];
-
- sprintf(&file[0], patt, dev_num);
- fd = open(&file[0], O_RDONLY);
- if (fd == -1)
- return -1;
-
- rd = read(fd, &buf[0], 50);
- if (rd == -1)
- goto error;
-
- if (sscanf(&buf[0], "%d\n", value) != 1) {
- /* This must be a UBI bug */
- fprintf(stderr, "LIBUBI: bad value at sysfs file\n");
- errno = EINVAL;
- goto error;
- }
-
- close(fd);
- return 0;
-
-error:
- close(fd);
- return -1;
-}
-
-/**
- * dev_read_ll - read a 'long long' value from an UBI device's sysfs file.
- *
- * @patt the file pattern to read from
- * @dev_num UBI device number
- * @value the result is stored here
- *
- * This function returns %0 in case of success and %-1 in case of failure.
- */
-static int dev_read_ll(const char *patt, int dev_num, long long *value)
-{
- int fd, rd;
- char buf[50];
- char file[strlen(patt) + 50];
-
- sprintf(&file[0], patt, dev_num);
- fd = open(&file[0], O_RDONLY);
- if (fd == -1)
- return -1;
-
- rd = read(fd, &buf[0], 50);
- if (rd == -1)
- goto error;
-
- if (sscanf(&buf[0], "%lld\n", value) != 1) {
- /* This must be a UBI bug */
- fprintf(stderr, "LIBUBI: bad value at sysfs file\n");
- errno = EINVAL;
- goto error;
- }
-
- close(fd);
- return 0;
-
-error:
- close(fd);
- return -1;
-}
-
-/**
- * dev_read_data - read data from an UBI device's sysfs file.
- *
- * @patt the file pattern to read from
- * @dev_num UBI device number
- * @buf buffer to read data to
- * @buf_len buffer length
- *
- * This function returns number of read bytes in case of success and %-1 in
- * case of failure.
- */
-static int dev_read_data(const char *patt, int dev_num, void *buf, int buf_len)
-{
- int fd, rd;
- char file[strlen(patt) + 50];
-
- sprintf(&file[0], patt, dev_num);
- fd = open(&file[0], O_RDONLY);
- if (fd == -1)
- return -1;
-
- rd = read(fd, buf, buf_len);
- if (rd == -1) {
- close(fd);
- return -1;
- }
-
- close(fd);
- return rd;
-}
-
-/**
- * vol_read_int - read an 'int' value from an UBI volume's sysfs file.
- *
- * @patt the file pattern to read from
- * @dev_num UBI device number
- * @vol_id volume identifier
- * @value the result is stored here
- *
- * This function returns %0 in case of success and %-1 in case of failure.
- */
-static int vol_read_int(const char *patt, int dev_num, int vol_id, int *value)
-{
- int fd, rd;
- char buf[50];
- char file[strlen(patt) + 100];
-
- sprintf(&file[0], patt, dev_num, vol_id);
- fd = open(&file[0], O_RDONLY);
- if (fd == -1)
- return -1;
-
- rd = read(fd, &buf[0], 50);
- if (rd == -1)
- goto error;
-
- if (sscanf(&buf[0], "%d\n", value) != 1) {
- /* This must be a UBI bug */
- fprintf(stderr, "LIBUBI: bad value at sysfs file\n");
- errno = EINVAL;
- goto error;
- }
-
- close(fd);
- return 0;
-
-error:
- close(fd);
- return -1;
-}
-
-/**
- * vol_read_ll - read a 'long long' value from an UBI volume's sysfs file.
- *
- * @patt the file pattern to read from
- * @dev_num UBI device number
- * @vol_id volume identifier
- * @value the result is stored here
- *
- * This function returns %0 in case of success and %-1 in case of failure.
- */
-static int vol_read_ll(const char *patt, int dev_num, int vol_id,
- long long *value)
-{
- int fd, rd;
- char buf[50];
- char file[strlen(patt) + 100];
-
- sprintf(&file[0], patt, dev_num, vol_id);
- fd = open(&file[0], O_RDONLY);
- if (fd == -1)
- return -1;
-
- rd = read(fd, &buf[0], 50);
- if (rd == -1)
- goto error;
-
- if (sscanf(&buf[0], "%lld\n", value) != 1) {
- /* This must be a UBI bug */
- fprintf(stderr, "LIBUBI: bad value at sysfs file\n");
- errno = EINVAL;
- goto error;
- }
-
- close(fd);
- return 0;
-
-error:
- close(fd);
- return -1;
-}
-
-/**
- * vol_read_data - read data from an UBI volume's sysfs file.
- *
- * @patt the file pattern to read from
- * @dev_num UBI device number
- * @vol_id volume identifier
- * @buf buffer to read to
- * @buf_len buffer length
- *
- * This function returns number of read bytes in case of success and %-1 in
- * case of failure.
- */
-static int vol_read_data(const char *patt, int dev_num, int vol_id, void *buf,
- int buf_len)
-{
- int fd, rd;
- char file[strlen(patt) + 100];
-
- sprintf(&file[0], patt, dev_num, vol_id);
- fd = open(&file[0], O_RDONLY);
- if (fd == -1)
- return -1;
-
- rd = read(fd, buf, buf_len);
- if (rd == -1) {
- close(fd);
- return -1;
- }
-
- close(fd);
- return rd;
-}
-
-/**
- * mkpath - compose full path from 2 given components.
- *
- * @path first component
- * @name second component
- *
- * This function returns the resulting path in case of success and %NULL in
- * case of failure.
- */
-static char *mkpath(const char *path, const char *name)
-{
- char *n;
- int len1 = strlen(path);
- int len2 = strlen(name);
-
- n = malloc(len1 + len2 + 2);
- if (!n)
- return NULL;
-
- memcpy(n, path, len1);
- if (n[len1 - 1] != '/')
- n[len1++] = '/';
-
- memcpy(n + len1, name, len2 + 1);
- return n;
-}
-
-/**
- * find_dev_num - find UBI device number by its character device node.
- *
- * @lib UBI library descriptor
- * @node UBI character device node name
- *
- * This function returns positive UBI device number in case of success and %-1
- * in case of failure.
- */
-static int find_dev_num(struct libubi *lib, const char *node)
-{
- struct stat st;
- struct ubi_info info;
- int i, major, minor;
-
- if (stat(node, &st))
- return -1;
-
- if (!S_ISCHR(st.st_mode)) {
- errno = EINVAL;
- return -1;
- }
-
- major = major(st.st_rdev);
- minor = minor(st.st_rdev);
-
- if (minor != 0) {
- errno = -EINVAL;
- return -1;
- }
-
- if (ubi_get_info((libubi_t *)lib, &info))
- return -1;
-
- for (i = info.lowest_dev_num; i <= info.highest_dev_num; i++) {
- int major1, minor1, ret;
- char buf[50];
-
- ret = dev_read_data(lib->dev_dev, i, &buf[0], 50);
- if (ret < 0)
- return -1;
-
- ret = sscanf(&buf[0], "%d:%d\n", &major1, &minor1);
- if (ret != 2) {
- fprintf(stderr, "LIBUBI: bad value at sysfs file\n");
- errno = EINVAL;
- return -1;
- }
-
- if (minor1 == minor && major1 == major)
- return i;
- }
-
- errno = ENOENT;
- return -1;
-}
-
-/**
- * find_dev_num_vol - find UBI device number by volume character device node.
- *
- * @lib UBI library descriptor
- * @node UBI character device node name
- *
- * This function returns positive UBI device number in case of success and %-1
- * in case of failure.
- */
-static int find_dev_num_vol(struct libubi *lib, const char *node)
-{
- struct stat st;
- struct ubi_info info;
- int i, major;
-
- if (stat(node, &st))
- return -1;
-
- if (!S_ISCHR(st.st_mode)) {
- errno = EINVAL;
- return -1;
- }
-
- major = major(st.st_rdev);
-
- if (minor(st.st_rdev) == 0) {
- errno = -EINVAL;
- return -1;
- }
-
- if (ubi_get_info((libubi_t *)lib, &info))
- return -1;
-
- for (i = info.lowest_dev_num; i <= info.highest_dev_num; i++) {
- int major1, minor1, ret;
- char buf[50];
-
- ret = dev_read_data(lib->dev_dev, i, &buf[0], 50);
- if (ret < 0)
- return -1;
-
- ret = sscanf(&buf[0], "%d:%d\n", &major1, &minor1);
- if (ret != 2) {
- fprintf(stderr, "LIBUBI: bad value at sysfs file\n");
- errno = EINVAL;
- return -1;
- }
-
- if (major1 == major)
- return i;
- }
-
- errno = ENOENT;
- return -1;
-}
-
-/**
- * find_vol_num - find UBI volume number by its character device node.
- *
- * @lib UBI library descriptor
- * @dev_num UBI device number
- * @node UBI volume character device node name
- *
- * This function returns positive UBI volume number in case of success and %-1
- * in case of failure.
- */
-static int find_vol_num(struct libubi *lib, int dev_num, const char *node)
-{
- struct stat st;
- struct ubi_dev_info info;
- int i, major, minor;
-
- if (stat(node, &st))
- return -1;
-
- if (!S_ISCHR(st.st_mode)) {
- errno = EINVAL;
- return -1;
- }
-
- major = major(st.st_rdev);
- minor = minor(st.st_rdev);
-
- if (minor == 0) {
- errno = -EINVAL;
- return -1;
- }
-
- if (ubi_get_dev_info1((libubi_t *)lib, dev_num, &info))
- return -1;
-
- for (i = info.lowest_vol_num; i <= info.highest_vol_num; i++) {
- int major1, minor1, ret;
- char buf[50];
-
- ret = vol_read_data(lib->vol_dev, dev_num, i, &buf[0], 50);
- if (ret < 0)
- return -1;
-
- ret = sscanf(&buf[0], "%d:%d\n", &major1, &minor1);
- if (ret != 2) {
- fprintf(stderr, "LIBUBI: bad value at sysfs file\n");
- errno = EINVAL;
- return -1;
- }
-
- if (minor1 == minor && major1 == major)
- return i;
- }
-
- errno = ENOENT;
- return -1;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 16:27:13 +0000