diff options
Diffstat (limited to 'include/part.h')
| -rw-r--r-- | include/part.h | 42 |
1 files changed, 38 insertions, 4 deletions
diff --git a/include/part.h b/include/part.h index 6ca87d0..6197101 100644 --- a/include/part.h +++ b/include/part.h @@ -129,9 +129,43 @@ void dev_print(struct blk_desc *dev_desc); */ int blk_get_device_by_str(const char *ifname, const char *dev_str, struct blk_desc **dev_desc); -int get_device_and_partition(const char *ifname, const char *dev_part_str, - struct blk_desc **dev_desc, - disk_partition_t *info, int allow_whole_dev); + +/** + * blk_get_device_part_str() - Get a block device and partition + * + * This calls blk_get_device_by_str() to look up a device. It also looks up + * a partition and returns information about it. + * + * @dev_part_str is in the format: + * <dev>.<hw_part>:<part> where <dev> is the device number, + * <hw_part> is the optional hardware partition number and + * <part> is the partition number + * + * If ifname is "hostfs" then this function returns the sandbox host block + * device. + * + * If ifname is ubi, then this function returns 0, with @info set to a + * special UBI device. + * + * If @dev_part_str is NULL or empty or "-", then this function looks up + * the "bootdevice" environment variable and uses that string instead. + * + * If the partition string is empty then the first partition is used. If the + * partition string is "auto" then the first bootable partition is used. + * + * @ifname: Interface name (e.g. "ide", "scsi") + * @dev_part_str: Device and partition string + * @dev_desc: Returns a pointer to the block device on success + * @info: Returns partition information + * @allow_whole_dev: true to allow the user to select partition 0 + * (which means the whole device), false to require a valid + * partition number >= 1 + * @return partition number, or -1 on error + * + */ +int blk_get_device_part_str(const char *ifname, const char *dev_part_str, + struct blk_desc **dev_desc, + disk_partition_t *info, int allow_whole_dev); #else static inline struct blk_desc *blk_get_dev(const char *ifname, int dev) { return NULL; } @@ -153,7 +187,7 @@ static inline void dev_print(struct blk_desc *dev_desc) {} static inline int blk_get_device_by_str(const char *ifname, const char *dev_str, struct blk_desc **dev_desc) { return -1; } -static inline int get_device_and_partition(const char *ifname, +static inline int blk_get_device_part_str(const char *ifname, const char *dev_part_str, struct blk_desc **dev_desc, disk_partition_t *info, |