Add dm_bitset_equal to libdevmapper.

diff --git a/WHATS_NEW_DM b/WHATS_NEW_DM
index 65784772852fb4a12b5a78b290a60ec31801f5ef..60725a8a469640f8e0496cacf2e937477462698c 100644 (file)
--- a/WHATS_NEW_DM
+++ b/WHATS_NEW_DM
@@ -1,6 +1,6 @@
 Version 1.02.47 -
 =================================
-  Add dm_bit_and.
+  Add dm_bit_and and dm_bitset_equal to libdevmapper.
   Simplify dm_bitset_create.
   Speed up dm_bit_get_next with ffs().
 

diff --git a/libdm/.exported_symbols b/libdm/.exported_symbols
index 67962aeea7772639f01157e80e7a4d0456a5d4c2..73ee5bd7db3b93b821851794b9d40199f98baae3 100644 (file)
--- a/libdm/.exported_symbols
+++ b/libdm/.exported_symbols
@@ -109,6 +109,7 @@ dm_pool_strndup
 dm_pool_zalloc
 dm_bitset_create
 dm_bitset_destroy
+dm_bitset_equal
 dm_bit_and
 dm_bit_union
 dm_bit_get_first

diff --git a/libdm/datastruct/bitset.c b/libdm/datastruct/bitset.c
index 6dd5952a6eb484751a7329652eb20c442914a4e1..9b8aff933c0c6ddc6c4df9c989ad3e11b06b8f0b 100644 (file)
--- a/libdm/datastruct/bitset.c
+++ b/libdm/datastruct/bitset.c
@@ -42,6 +42,17 @@ void dm_bitset_destroy(dm_bitset_t bs)
        dm_free(bs);
 }
 
+int dm_bitset_equal(dm_bitset_t in1, dm_bitset_t in2)
+{
+       int i;
+
+       for (i = (in1[0] / DM_BITS_PER_INT) + 1; i; i--)
+               if (in1[i] != in2[i])
+                       return 0;
+
+       return 1;
+}
+
 void dm_bit_and(dm_bitset_t out, dm_bitset_t in1, dm_bitset_t in2)
 {
        int i;

diff --git a/libdm/libdevmapper.h b/libdm/libdevmapper.h
index 24357742163181d0103c7fafe23e66ba0e93e1d2..0ee23fbb577bdbe9d9965bc3f986aac65239104f 100644 (file)
--- a/libdm/libdevmapper.h
+++ b/libdm/libdevmapper.h
@@ -600,6 +600,8 @@ typedef uint32_t *dm_bitset_t;
 dm_bitset_t dm_bitset_create(struct dm_pool *mem, unsigned num_bits);
 void dm_bitset_destroy(dm_bitset_t bs);
 
+int dm_bitset_equal(dm_bitset_t in1, dm_bitset_t in2);
+
 void dm_bit_and(dm_bitset_t out, dm_bitset_t in1, dm_bitset_t in2);
 void dm_bit_union(dm_bitset_t out, dm_bitset_t in1, dm_bitset_t in2);
 int dm_bit_get_first(dm_bitset_t bs);