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tools: bpftool: fix format string for p_err() in query_flow_dissector()

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The format string passed to one call to the p_err() function in
query_flow_dissector() does not match the value that should be printed,
resulting in some garbage integer being printed instead of
strerror(errno) if /proc/self/ns/net cannot be open. Let's fix the
format string.

Fixes: 7f0c57fec8 ("bpftool: show flow_dissector attachment status")
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Quentin Monnet 2019-08-15 15:32:18 +01:00 committed by Alexei Starovoitov
parent ed4a3983cd
commit 8a15d5ced8
1 changed files with 1 additions and 1 deletions
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2
tools/bpf/bpftool/net.c
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@ -226,7 +226,7 @@ static int query_flow_dissector(struct bpf_attach_info *attach_info)
fd = open("/proc/self/ns/net", O_RDONLY);
if (fd < 0) {
p_err("can't open /proc/self/ns/net: %d",
p_err("can't open /proc/self/ns/net: %s",
strerror(errno));
return -1;
}