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authorUlrich Drepper <drepper@redhat.com>2000-04-14 17:42:46 +0000
committerUlrich Drepper <drepper@redhat.com>2000-04-14 17:42:46 +0000
commita204dbb2ec570cf20d4932dc5b17859a159d8708 (patch)
treece8f10127633e481d9267751ee3e4119080e2b2f
parent12d3e5790003cee28a01c64c9d4d579dcbe68ed5 (diff)
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Implement posix_memalign for glibc.
-rw-r--r--malloc/malloc.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c
index f674f4ebfe..7f33ebf252 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -4746,6 +4746,29 @@ free_atfork(mem, caller) Void_t* mem; const Void_t *caller;
 
 
 #ifdef _LIBC
+/* We need a wrapper function for one of the additions of POSIX.  */
+int
+__posix_memalign (void **memptr, size_t alignment, size_t size)
+{
+  void *mem;
+
+  /* Test whether the SIZE argument is valid.  It must be a power of
+     two multiple of sizeof (void *).  */
+  if (size % sizeof (void *) != 0 || (size & (size - 1)) != 0)
+    return EINVAL;
+
+  mem = __libc_memalign (alignment, size);
+
+  if (mem != NULL)
+    {
+      *memptr = mem;
+      return 0;
+    }
+
+  return ENOMEM;
+}
+weak_alias (__posix_memalign, posix_memalign)
+
 weak_alias (__libc_calloc, __calloc) weak_alias (__libc_calloc, calloc)
 weak_alias (__libc_free, __cfree) weak_alias (__libc_free, cfree)
 weak_alias (__libc_free, __free) weak_alias (__libc_free, free)