From 87b8530fe24408b0ef41c9b80f38c395ccafad2c Mon Sep 17 00:00:00 2001 From: Petr Kulhavy Date: Fri, 9 Sep 2016 10:27:15 +0200 Subject: disk: part: implement generic function part_get_info_by_name() So far partition search by name has been supported only on the EFI partition table. This patch extends the search to all partition tables. Rename part_get_info_efi_by_name() to part_get_info_by_name(), move it from part_efi.c into part.c and make it a generic function which traverses all part drivers and searches all partitions (in the order given by the linked list). For this a new variable struct part_driver.max_entries is added, which limits the number of partitions searched. For EFI this was GPT_ENTRY_NUMBERS. Similarly the limit is defined for DOS, ISO, MAC and AMIGA partition tables. Signed-off-by: Petr Kulhavy Reviewed-by: Tom Rini Acked-by: Steve Rae --- disk/part.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'disk/part.c') diff --git a/disk/part.c b/disk/part.c index 6a1c02d..8317e80 100644 --- a/disk/part.c +++ b/disk/part.c @@ -615,3 +615,29 @@ cleanup: free(dup_str); return ret; } + +int part_get_info_by_name(struct blk_desc *dev_desc, const char *name, + disk_partition_t *info) +{ + struct part_driver *first_drv = + ll_entry_start(struct part_driver, part_driver); + const int n_drvs = ll_entry_count(struct part_driver, part_driver); + struct part_driver *part_drv; + + for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) { + int ret; + int i; + for (i = 1; i < part_drv->max_entries; i++) { + ret = part_drv->get_info(dev_desc, i, info); + if (ret != 0) { + /* no more entries in table */ + break; + } + if (strcmp(name, (const char *)info->name) == 0) { + /* matched */ + return 0; + } + } + } + return -1; +} -- cgit v1.1