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libbpf: Stringify errno in log messages in the remaining code

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Convert numeric error codes into the string representations in log
messages in the rest of libbpf source files.

Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241111212919.368971-5-mykyta.yatsenko5@gmail.com
This commit is contained in:
Mykyta Yatsenko
2024-11-11 21:29:19 +00:00
committed by Andrii Nakryiko
parent da7d63a690
commit db73e46709
6 changed files with 56 additions and 53 deletions
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34
src/ringbuf.c
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@@ -21,6 +21,7 @@
#include "libbpf.h"
#include "libbpf_internal.h"
#include "bpf.h"
#include "str_error.h"
struct ring {
ring_buffer_sample_fn sample_cb;
@@ -88,8 +89,8 @@ int ring_buffer__add(struct ring_buffer *rb, int map_fd,
err = bpf_map_get_info_by_fd(map_fd, &info, &len);
if (err) {
err = -errno;
pr_warn("ringbuf: failed to get map info for fd=%d: %d\n",
map_fd, err);
pr_warn("ringbuf: failed to get map info for fd=%d: %s\n",
map_fd, errstr(err));
return libbpf_err(err);
}
@@ -123,8 +124,8 @@ int ring_buffer__add(struct ring_buffer *rb, int map_fd,
tmp = mmap(NULL, rb->page_size, PROT_READ | PROT_WRITE, MAP_SHARED, map_fd, 0);
if (tmp == MAP_FAILED) {
err = -errno;
pr_warn("ringbuf: failed to mmap consumer page for map fd=%d: %d\n",
map_fd, err);
pr_warn("ringbuf: failed to mmap consumer page for map fd=%d: %s\n",
map_fd, errstr(err));
goto err_out;
}
r->consumer_pos = tmp;
@@ -142,8 +143,8 @@ int ring_buffer__add(struct ring_buffer *rb, int map_fd,
tmp = mmap(NULL, (size_t)mmap_sz, PROT_READ, MAP_SHARED, map_fd, rb->page_size);
if (tmp == MAP_FAILED) {
err = -errno;
pr_warn("ringbuf: failed to mmap data pages for map fd=%d: %d\n",
map_fd, err);
pr_warn("ringbuf: failed to mmap data pages for map fd=%d: %s\n",
map_fd, errstr(err));
goto err_out;
}
r->producer_pos = tmp;
@@ -156,8 +157,8 @@ int ring_buffer__add(struct ring_buffer *rb, int map_fd,
e->data.fd = rb->ring_cnt;
if (epoll_ctl(rb->epoll_fd, EPOLL_CTL_ADD, map_fd, e) < 0) {
err = -errno;
pr_warn("ringbuf: failed to epoll add map fd=%d: %d\n",
map_fd, err);
pr_warn("ringbuf: failed to epoll add map fd=%d: %s\n",
map_fd, errstr(err));
goto err_out;
}
@@ -205,7 +206,7 @@ ring_buffer__new(int map_fd, ring_buffer_sample_fn sample_cb, void *ctx,
rb->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
if (rb->epoll_fd < 0) {
err = -errno;
pr_warn("ringbuf: failed to create epoll instance: %d\n", err);
pr_warn("ringbuf: failed to create epoll instance: %s\n", errstr(err));
goto err_out;
}
@@ -458,7 +459,8 @@ static int user_ringbuf_map(struct user_ring_buffer *rb, int map_fd)
err = bpf_map_get_info_by_fd(map_fd, &info, &len);
if (err) {
err = -errno;
pr_warn("user ringbuf: failed to get map info for fd=%d: %d\n", map_fd, err);
pr_warn("user ringbuf: failed to get map info for fd=%d: %s\n",
map_fd, errstr(err));
return err;
}
@@ -474,8 +476,8 @@ static int user_ringbuf_map(struct user_ring_buffer *rb, int map_fd)
tmp = mmap(NULL, rb->page_size, PROT_READ, MAP_SHARED, map_fd, 0);
if (tmp == MAP_FAILED) {
err = -errno;
pr_warn("user ringbuf: failed to mmap consumer page for map fd=%d: %d\n",
map_fd, err);
pr_warn("user ringbuf: failed to mmap consumer page for map fd=%d: %s\n",
map_fd, errstr(err));
return err;
}
rb->consumer_pos = tmp;
@@ -494,8 +496,8 @@ static int user_ringbuf_map(struct user_ring_buffer *rb, int map_fd)
map_fd, rb->page_size);
if (tmp == MAP_FAILED) {
err = -errno;
pr_warn("user ringbuf: failed to mmap data pages for map fd=%d: %d\n",
map_fd, err);
pr_warn("user ringbuf: failed to mmap data pages for map fd=%d: %s\n",
map_fd, errstr(err));
return err;
}
@@ -506,7 +508,7 @@ static int user_ringbuf_map(struct user_ring_buffer *rb, int map_fd)
rb_epoll->events = EPOLLOUT;
if (epoll_ctl(rb->epoll_fd, EPOLL_CTL_ADD, map_fd, rb_epoll) < 0) {
err = -errno;
pr_warn("user ringbuf: failed to epoll add map fd=%d: %d\n", map_fd, err);
pr_warn("user ringbuf: failed to epoll add map fd=%d: %s\n", map_fd, errstr(err));
return err;
}
@@ -531,7 +533,7 @@ user_ring_buffer__new(int map_fd, const struct user_ring_buffer_opts *opts)
rb->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
if (rb->epoll_fd < 0) {
err = -errno;
pr_warn("user ringbuf: failed to create epoll instance: %d\n", err);
pr_warn("user ringbuf: failed to create epoll instance: %s\n", errstr(err));
goto err_out;
}