From 077c4d1a355d96bc81255ddeb068cdc401a9d548 Mon Sep 17 00:00:00 2001 From: Zdenek Kabelac Date: Wed, 21 Dec 2011 12:52:38 +0000 Subject: [PATCH] Add Thin API for parsing thin status Add dm_get_status_thin_pool and dm_get_status_thin functions to parse 'params' argument which is received via dm_get_next_target. Returns filed structure allocated from given mempool. --- libdm/libdevmapper.h | 23 +++++++++++++++++++++ libdm/libdm-deptree.c | 48 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 71 insertions(+) diff --git a/libdm/libdevmapper.h b/libdm/libdevmapper.h index 1975c349c..8c282cec7 100644 --- a/libdm/libdevmapper.h +++ b/libdm/libdevmapper.h @@ -238,6 +238,29 @@ void *dm_get_next_target(struct dm_task *dmt, void *next, uint64_t *start, uint64_t *length, char **target_type, char **params); +/* Parse params from STATUS call for thin_pool target */ +struct dm_pool; + +struct dm_status_thin_pool { + uint64_t transaction_id; + uint64_t used_meta_blocks; + uint64_t total_meta_blocks; + uint64_t used_data_blocks; + uint64_t total_data_blocks; +}; + +int dm_get_status_thin_pool(struct dm_pool *mem, const char *params, + struct dm_status_thin_pool **status); + +/* Parse params from STATUS call for thin target */ +struct dm_status_thin { + uint64_t mapped_sectors; + uint64_t highest_mapped_sector; +}; + +int dm_get_status_thin(struct dm_pool *mem, const char *params, + struct dm_status_thin **status); + /* * Call this to actually run the ioctl. */ diff --git a/libdm/libdm-deptree.c b/libdm/libdm-deptree.c index 9beb792aa..9531fb967 100644 --- a/libdm/libdm-deptree.c +++ b/libdm/libdm-deptree.c @@ -3030,6 +3030,54 @@ int dm_tree_node_add_thin_target(struct dm_tree_node *node, return 1; } + +int dm_get_status_thin_pool(struct dm_pool *mem, const char *params, + struct dm_status_thin_pool **status) +{ + struct dm_status_thin_pool *s; + + if (!(s = dm_pool_zalloc(mem, sizeof(struct dm_status_thin_pool)))) { + log_error("Failed to allocate thin_pool status structure."); + return 0; + } + + if (sscanf(params, "%" PRIu64 " %" PRIu64 "/%" PRIu64 " %" PRIu64 "/%" PRIu64, + &s->transaction_id, + &s->used_meta_blocks, + &s->total_meta_blocks, + &s->used_data_blocks, + &s->total_data_blocks) != 5) { + log_error("Failed to parse thin pool params: %s.", params); + return 0; + } + + *status = s; + + return 1; +} + +int dm_get_status_thin(struct dm_pool *mem, const char *params, + struct dm_status_thin **status) +{ + struct dm_status_thin *s; + + if (!(s = dm_pool_zalloc(mem, sizeof(struct dm_status_thin)))) { + log_error("Failed to allocate thin status structure."); + return 0; + } + + if (sscanf(params, "%" PRIu64 " %" PRIu64, + &s->mapped_sectors, + &s->highest_mapped_sector) != 2) { + log_error("Failed to parse thin params: %s.", params); + return 0; + } + + *status = s; + + return 1; +} + static int _add_area(struct dm_tree_node *node, struct load_segment *seg, struct dm_tree_node *dev_node, uint64_t offset) { struct seg_area *area; -- 2.43.5