diff options
| author | Andrii Nakryiko <andriin@fb.com> | 2020-08-19 04:36:04 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-08-19 04:38:25 +0300 |
| commit | 029258d7b22894fabcecb1626e1b87d18a6823f4 (patch) | |
| tree | 15b1b7ecf8e298c62341d0d81578763d69216511 /tools/lib/bpf/ringbuf.c | |
| parent | 00b2e95325f8c9dd56a7dae691b01e321838a557 (diff) | |
| download | linux-029258d7b22894fabcecb1626e1b87d18a6823f4.tar.xz | |
libbpf: Remove any use of reallocarray() in libbpf
Re-implement glibc's reallocarray() for libbpf internal-only use.
reallocarray(), unfortunately, is not available in all versions of glibc, so
requires extra feature detection and using reallocarray() stub from
<tools/libc_compat.h> and COMPAT_NEED_REALLOCARRAY. All this complicates build
of libbpf unnecessarily and is just a maintenance burden. Instead, it's
trivial to implement libbpf-specific internal version and use it throughout
libbpf.
Which is what this patch does, along with converting some realloc() uses that
should really have been reallocarray() in the first place.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200819013607.3607269-2-andriin@fb.com
Diffstat (limited to 'tools/lib/bpf/ringbuf.c')
| -rw-r--r-- | tools/lib/bpf/ringbuf.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/tools/lib/bpf/ringbuf.c b/tools/lib/bpf/ringbuf.c index 4fc6c6cbb4eb..5bd234be8a14 100644 --- a/tools/lib/bpf/ringbuf.c +++ b/tools/lib/bpf/ringbuf.c @@ -16,7 +16,6 @@ #include <asm/barrier.h> #include <sys/mman.h> #include <sys/epoll.h> -#include <tools/libc_compat.h> #include "libbpf.h" #include "libbpf_internal.h" @@ -82,12 +81,12 @@ int ring_buffer__add(struct ring_buffer *rb, int map_fd, return -EINVAL; } - tmp = reallocarray(rb->rings, rb->ring_cnt + 1, sizeof(*rb->rings)); + tmp = libbpf_reallocarray(rb->rings, rb->ring_cnt + 1, sizeof(*rb->rings)); if (!tmp) return -ENOMEM; rb->rings = tmp; - tmp = reallocarray(rb->events, rb->ring_cnt + 1, sizeof(*rb->events)); + tmp = libbpf_reallocarray(rb->events, rb->ring_cnt + 1, sizeof(*rb->events)); if (!tmp) return -ENOMEM; rb->events = tmp; |