From 448a256359e951fd2e81ccb2926e3f2b1d7a09de Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Mon, 28 Dec 2020 09:50:23 -0300 Subject: malloc: Add scratch_buffer_dupfree It returns a copy of the buffer up to a defined size. It will be used on realpath sync with gnulib. --- include/scratch_buffer.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include') diff --git a/include/scratch_buffer.h b/include/scratch_buffer.h index f51456444f..36d0bef4bb 100644 --- a/include/scratch_buffer.h +++ b/include/scratch_buffer.h @@ -132,4 +132,20 @@ scratch_buffer_set_array_size (struct scratch_buffer *buffer, (buffer, nelem, size)); } +/* Return a copy of *BUFFER's first SIZE bytes as a heap-allocated block, + deallocating *BUFFER if it was heap-allocated. SIZE must be at + most *BUFFER's size. Return NULL (setting errno) on memory + exhaustion. */ +void *__libc_scratch_buffer_dupfree (struct scratch_buffer *buffer, + size_t size); +libc_hidden_proto (__libc_scratch_buffer_dupfree) + +/* Alias for __libc_scratch_dupfree. */ +static __always_inline void * +scratch_buffer_dupfree (struct scratch_buffer *buffer, size_t size) +{ + void *r = __libc_scratch_buffer_dupfree (buffer, size); + return __glibc_likely (r != NULL) ? r : NULL; +} + #endif /* _SCRATCH_BUFFER_H */ -- cgit 1.4.1