| commit | f7c2d64bac1be2ff32f8e4f500c6e5429c1003e0 | [log] [tgz] |
|---|---|---|
| author | Chang-Hsien Tsai <luke.tw@gmail.com> | Sun May 19 09:05:44 2019 +0000 |
| committer | Daniel Borkmann <daniel@iogearbox.net> | Tue May 21 16:36:48 2019 +0200 |
| tree | 9daa3a8015f051b4fc36020d310b266f652627e5 | |
| parent | f7355a6c049711ecfbeed573e43d48bee7acb83a [diff] |
samples, bpf: fix to change the buffer size for read()
If the trace for read is larger than 4096, the return
value sz will be 4096. This results in off-by-one error
on buf:
static char buf[4096];
ssize_t sz;
sz = read(trace_fd, buf, sizeof(buf));
if (sz > 0) {
buf[sz] = 0;
puts(buf);
}
Signed-off-by: Chang-Hsien Tsai <luke.tw@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>