Please ignore this patch-set, "disk: part: Extend API to get partition info" won't be used and was sent by by confusion. I'll re-send a single "cmd: part: Add 'number' sub-command" as v5.
On Fri, Jun 14, 2019 at 4:04 PM Igor Opaniuk igor.opaniuk@gmail.com wrote:
This patch-series extends `part` cmd and disk/part C API for getting partition info by it's name:
- part "number" sub-command serves for getting the partition index from
partition name. Also it can be used to test the existence of specified partition.
- Introduces part_get_info_by_dev_and_name_or_num() function which
allows us to get partition info from its number or name. Partition of interest is specified by string like "device_num:partition_number" or "device_num#partition_name".
Initially these patches were a part of "android: implement A/B boot process" [1] patch-series, but then due to multiple requests decided to send it separately, while the work on A/B series is still in progress.
Use case:
For example, in Linaro Lab this U-Boot command for automatic testing of Linux rootfs is used:
=> setenv bootpart 1:fwhere 0xf is "userdata" partition. But the number of "userdata" partition can be changed any time, when partition table is changed.
So it would be nice to get rid of that 0xf magic number and use partition name instead, like this:
=> part number mmc 1 userdata part_num => setenv bootpart 1:${part_num}[1] https://patchwork.ozlabs.org/cover/1044152/
Ruslan Trofymenko (2): cmd: part: Add 'number' sub-command disk: part: Extend API to get partition info
cmd/part.c | 16 +++++++++++- disk/part.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/part.h | 21 ++++++++++++++++ 3 files changed, 104 insertions(+), 1 deletion(-)
-- 2.17.1