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tools: bpftool: use correct argument in cgroup errors 

cgroup code tries to use argv[0] as the cgroup path,
but if it fails uses argv[1] to report errors.

Fixes: 5ccda64d38 ("bpftool: implement cgroup bpf operations")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Jakub Kicinski 2019-06-25 09:56:31 -07:00 committed by Daniel Borkmann
parent f7019b7b0a
commit 6c6874f401
1 changed files with 3 additions and 3 deletions
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6
tools/bpf/bpftool/cgroup.c
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@ -168,7 +168,7 @@ static int do_show(int argc, char **argv)
cgroup_fd = open(argv[0], O_RDONLY);
if (cgroup_fd < 0) {
p_err("can't open cgroup %s", argv[1]);
p_err("can't open cgroup %s", argv[0]);
goto exit;
}
@ -356,7 +356,7 @@ static int do_attach(int argc, char **argv)
cgroup_fd = open(argv[0], O_RDONLY);
if (cgroup_fd < 0) {
p_err("can't open cgroup %s", argv[1]);
p_err("can't open cgroup %s", argv[0]);
goto exit;
}
@ -414,7 +414,7 @@ static int do_detach(int argc, char **argv)
cgroup_fd = open(argv[0], O_RDONLY);
if (cgroup_fd < 0) {
p_err("can't open cgroup %s", argv[1]);
p_err("can't open cgroup %s", argv[0]);
goto exit;
}