#define PATH_MAX 256
-struct mtd_priv {
+struct mtd_volume {
+ struct volume v;
int fd;
int idx;
char *chr;
return open(mtd, flags);
}
-static void mtd_volume_close(struct volume *v)
+static void mtd_volume_close(struct mtd_volume *p)
{
- struct mtd_priv *p = (struct mtd_priv*) v->priv;
-
if (!p->fd)
return;
p->fd = 0;
}
-static int mtd_volume_load(struct volume *v)
+static int mtd_volume_load(struct mtd_volume *p)
{
- struct mtd_priv *p = (struct mtd_priv*) v->priv;
+ struct volume *v = &p->v;
struct mtd_info_user mtdInfo;
struct erase_info_user mtdLockInfo;
- if (p->fd)
+ if (p->fd) {
+ lseek(p->fd, 0, SEEK_SET);
return 0;
+ }
if (!p->chr)
return -1;
}
if (ioctl(p->fd, MEMGETINFO, &mtdInfo)) {
- mtd_volume_close(v);
+ mtd_volume_close(p);
ULOG_ERR("Could not get MTD device info from %s\n", p->chr);
return -1;
}
return index;
}
-static int mtd_volume_find(struct volume *v, char *name)
+static struct volume *mtd_volume_find(char *name)
{
char *idx = mtd_find_index(name);
- struct mtd_priv *p;
+ struct mtd_volume *p;
+ struct volume *v;
char buffer[32];
if (!idx)
- return -1;
+ return NULL;
- p = calloc(1, sizeof(struct mtd_priv));
+ p = calloc(1, sizeof(struct mtd_volume));
if (!p)
- return -1;
+ return NULL;
- v->priv = p;
+ v = &p->v;
v->name = strdup(name);
v->drv = &mtd_driver;
p->idx = atoi(idx);
snprintf(buffer, sizeof(buffer), "/dev/mtd%s", idx);
p->chr = strdup(buffer);
- if (mtd_volume_load(v)) {
+ if (mtd_volume_load(p)) {
ULOG_ERR("reading %s failed\n", v->name);
- return -1;
+ free(p);
+ return NULL;
}
- return 0;
+ return v;
}
static int mtd_volume_identify(struct volume *v)
{
- struct mtd_priv *p = (struct mtd_priv*) v->priv;
+ struct mtd_volume *p = container_of(v, struct mtd_volume, v);;
__u32 deadc0de;
__u16 jffs2;
size_t sz;
- if (mtd_volume_load(v)) {
+ if (mtd_volume_load(p)) {
ULOG_ERR("reading %s failed\n", v->name);
return -1;
}
static int mtd_volume_erase(struct volume *v, int offset, int len)
{
- struct mtd_priv *p = (struct mtd_priv*) v->priv;
+ struct mtd_volume *p = container_of(v, struct mtd_volume, v);;
struct erase_info_user eiu;
int first_block, num_blocks;
- if (mtd_volume_load(v))
+ if (mtd_volume_load(p))
return -1;
if (offset % v->block_size || len % v->block_size) {
ULOG_ERR("Failed to erase block at 0x%x\n", eiu.start);
}
- mtd_volume_close(v);
+ mtd_volume_close(p);
return 0;
}
static int mtd_volume_erase_all(struct volume *v)
{
+ struct mtd_volume *p = container_of(v, struct mtd_volume, v);;
+
mtd_volume_erase(v, 0, v->size);
- mtd_volume_close(v);
+ mtd_volume_close(p);
return 0;
}
static int mtd_volume_init(struct volume *v)
{
- struct mtd_priv *p = (struct mtd_priv*) v->priv;
+ struct mtd_volume *p = container_of(v, struct mtd_volume, v);;
struct mtd_info_user mtdinfo;
int ret;
- if (mtd_volume_load(v))
+ if (mtd_volume_load(p))
return -1;
ret = ioctl(p->fd, MEMGETINFO, &mtdinfo);
static int mtd_volume_read(struct volume *v, void *buf, int offset, int length)
{
- struct mtd_priv *p = (struct mtd_priv*) v->priv;
+ struct mtd_volume *p = container_of(v, struct mtd_volume, v);;
- if (mtd_volume_load(v))
+ if (mtd_volume_load(p))
return -1;
if (lseek(p->fd, offset, SEEK_SET) == (off_t) -1) {
static int mtd_volume_write(struct volume *v, void *buf, int offset, int length)
{
- struct mtd_priv *p = (struct mtd_priv*) v->priv;
+ struct mtd_volume *p = container_of(v, struct mtd_volume, v);;
- if (mtd_volume_load(v))
+ if (mtd_volume_load(p))
return -1;
if (lseek(p->fd, offset, SEEK_SET) == (off_t) -1) {