diff options
| -rw-r--r-- | disk/part.c | 74 |
1 files changed, 64 insertions, 10 deletions
diff --git a/disk/part.c b/disk/part.c index b8c6aac..5e10cae 100644 --- a/disk/part.c +++ b/disk/part.c @@ -22,6 +22,7 @@ struct block_drvr { char *name; block_dev_desc_t* (*get_dev)(int dev); + int (*select_hwpart)(int dev_num, int hwpart); }; static const struct block_drvr block_drvr[] = { @@ -52,11 +53,13 @@ static const struct block_drvr block_drvr[] = { DECLARE_GLOBAL_DATA_PTR; #ifdef HAVE_BLOCK_DEVICE -block_dev_desc_t *get_dev(const char *ifname, int dev) +block_dev_desc_t *get_dev_hwpart(const char *ifname, int dev, int hwpart) { const struct block_drvr *drvr = block_drvr; block_dev_desc_t* (*reloc_get_dev)(int dev); + int (*select_hwpart)(int dev_num, int hwpart); char *name; + int ret; if (!ifname) return NULL; @@ -68,17 +71,41 @@ block_dev_desc_t *get_dev(const char *ifname, int dev) while (drvr->name) { name = drvr->name; reloc_get_dev = drvr->get_dev; + select_hwpart = drvr->select_hwpart; #ifdef CONFIG_NEEDS_MANUAL_RELOC name += gd->reloc_off; reloc_get_dev += gd->reloc_off; -#endif - if (strncmp(ifname, name, strlen(name)) == 0) - return reloc_get_dev(dev); + if (select_hwpart) + select_hwpart += gd->reloc_off; +#endif + if (strncmp(ifname, name, strlen(name)) == 0) { + block_dev_desc_t *dev_desc = reloc_get_dev(dev); + if (!dev_desc) + return NULL; + if (hwpart == -1) + return dev_desc; + if (!select_hwpart) + return NULL; + ret = select_hwpart(dev_desc->dev, hwpart); + if (ret < 0) + return NULL; + return dev_desc; + } drvr++; } return NULL; } + +block_dev_desc_t *get_dev(const char *ifname, int dev) +{ + return get_dev_hwpart(ifname, dev, -1); +} #else +block_dev_desc_t *get_dev_hwpart(const char *ifname, int dev, int hwpart) +{ + return NULL; +} + block_dev_desc_t *get_dev(const char *ifname, int dev) { return NULL; @@ -413,25 +440,52 @@ int get_partition_info(block_dev_desc_t *dev_desc, int part return -1; } -int get_device(const char *ifname, const char *dev_str, +int get_device(const char *ifname, const char *dev_hwpart_str, block_dev_desc_t **dev_desc) { char *ep; - int dev; + char *dup_str = NULL; + const char *dev_str, *hwpart_str; + int dev, hwpart; + + hwpart_str = strchr(dev_hwpart_str, '.'); + if (hwpart_str) { + dup_str = strdup(dev_hwpart_str); + dup_str[hwpart_str - dev_hwpart_str] = 0; + dev_str = dup_str; + hwpart_str++; + } else { + dev_str = dev_hwpart_str; + hwpart = -1; + } dev = simple_strtoul(dev_str, &ep, 16); if (*ep) { printf("** Bad device specification %s %s **\n", ifname, dev_str); - return -1; + dev = -1; + goto cleanup; + } + + if (hwpart_str) { + hwpart = simple_strtoul(hwpart_str, &ep, 16); + if (*ep) { + printf("** Bad HW partition specification %s %s **\n", + ifname, hwpart_str); + dev = -1; + goto cleanup; + } } - *dev_desc = get_dev(ifname, dev); + *dev_desc = get_dev_hwpart(ifname, dev, hwpart); if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) { - printf("** Bad device %s %s **\n", ifname, dev_str); - return -1; + printf("** Bad device %s %s **\n", ifname, dev_hwpart_str); + dev = -1; + goto cleanup; } +cleanup: + free(dup_str); return dev; } |