mirror/libbpf
1
0
Fork 0
mirror of https://github.com/netdata/libbpf.git synced 2026-03-22 17:29:07 +08:00
Code Issues Packages Projects Releases Wiki Activity

libbpf: Make gen_loader data aligned.

Browse Source 
Align gen_loader data to 8 byte boundary to make sure union bpf_attr,
bpf_insns and other structs are aligned.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210927145941.1383001-9-memxor@gmail.com
This commit is contained in:
Alexei Starovoitov
2021-09-27 20:29:37 +05:30
committed by Andrii Nakryiko
parent b0feb9b4d5
commit f49c65d216
1 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/gen_loader.c
View File

@@ -5,6 +5,7 @@
#include <string.h>
#include <errno.h>
#include <linux/filter.h>
#include <sys/param.h>
#include "btf.h"
#include "bpf.h"
#include "libbpf.h"
@@ -135,13 +136,17 @@ void bpf_gen__init(struct bpf_gen *gen, int log_level)
static int add_data(struct bpf_gen *gen, const void *data, __u32 size)
{
__u32 size8 = roundup(size, 8);
__u64 zero = 0;
void *prev;
if (realloc_data_buf(gen, size))
if (realloc_data_buf(gen, size8))
return 0;
prev = gen->data_cur;
memcpy(gen->data_cur, data, size);
gen->data_cur += size;
memcpy(gen->data_cur, &zero, size8 - size);
gen->data_cur += size8 - size;
return prev - gen->data_start;
}