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tools: bpftool: maps: close json array on error paths of show

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We can't return from the middle of do_show(), because
json_array will not be closed.  Break out of the loop.
Note that the error handling after the loop depends on
errno, so no need to set err.

Fixes: 831a0aafe5 ("tools: bpftool: add JSON output for `bpftool map *` commands")
Signed-off-by: Jakub Kicinski <[email protected]>
Acked-by: Quentin Monnet <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
This commit is contained in:
Jakub Kicinski 2017-12-22 11:36:05 -08:00 • committed by Daniel Borkmann
commit b3b1b65328
1 changed files with 3 additions and 3 deletions
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6
tools/bpf/bpftool/map.c
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@ -523,21 +523,21 @@ static int do_show(int argc, char **argv)
break;
p_err("can't get next map: %s%s", strerror(errno),
errno == EINVAL ? " -- kernel too old?" : "");
return -1;
break;
}
fd = bpf_map_get_fd_by_id(id);
if (fd < 0) {
p_err("can't get map by id (%u): %s",
id, strerror(errno));
return -1;
break;
}
err = bpf_obj_get_info_by_fd(fd, &info, &len);
if (err) {
p_err("can't get map info: %s", strerror(errno));
close(fd);
return -1;
break;
}
if (json_output)