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libbpf: Add ring__map_fd

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Add ring__map_fd to get the file descriptor underlying a given
ringbuffer.

Signed-off-by: Martin Kelly <martin.kelly@crowdstrike.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230925215045.2375758-12-martin.kelly@crowdstrike.com
This commit is contained in:
Martin Kelly
2023-09-25 14:50:42 -07:00
committed by Andrii Nakryiko
parent cd3fe56c75
commit 6413c2d063
3 changed files with 15 additions and 0 deletions
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5
src/ringbuf.c
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@@ -366,6 +366,11 @@ size_t ring__size(const struct ring *r)
return r->mask + 1;
}
int ring__map_fd(const struct ring *r)
{
return r->map_fd;
}
static void user_ringbuf_unmap_ring(struct user_ring_buffer *rb)
{
if (rb->consumer_pos) {