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libdm: cache target arg validation

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Add some arg validation for dm_tree_node_add_cache_target().
This commit is contained in:
Zdenek Kabelac 2015-08-11 13:31:26 +02:00
parent 9edd2258ff
commit 08f047eb51
2 changed files with 27 additions and 0 deletions
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1
WHATS_NEW_DM
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@ -1,5 +1,6 @@
Version 1.02.105 -
===================================
Add more arg validation for dm_tree_node_add_cache_target().
Version 1.02.104 - 10th August 2015
===================================

26
libdm/libdm-deptree.c
View File

@ -3358,6 +3358,32 @@ int dm_tree_node_add_cache_target(struct dm_tree_node *node,
struct dm_config_node *cn;
struct load_segment *seg;
switch (feature_flags &
(DM_CACHE_FEATURE_PASSTHROUGH |
DM_CACHE_FEATURE_WRITETHROUGH |
DM_CACHE_FEATURE_WRITEBACK)) {
case DM_CACHE_FEATURE_PASSTHROUGH:
case DM_CACHE_FEATURE_WRITETHROUGH:
case DM_CACHE_FEATURE_WRITEBACK:
break;
default:
log_error("Invalid cache's feature flag " FMTu64 ".",
feature_flags);
return 0;
}
if (data_block_size < DM_CACHE_MIN_DATA_BLOCK_SIZE) {
log_error("Data block size %u is lower then %u sectors.",
data_block_size, DM_CACHE_MIN_DATA_BLOCK_SIZE);
return 0;
}
if (data_block_size > DM_CACHE_MAX_DATA_BLOCK_SIZE) {
log_error("Data block size %u is higher then %u sectors.",
data_block_size, DM_CACHE_MAX_DATA_BLOCK_SIZE);
return 0;
}
if (!(seg = _add_segment(node, SEG_CACHE, size)))
return_0;