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systemd/SOURCES/0392-resolvconf-fixes-for-t...

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From 9b7aa39e7db5a6446d3c034741e64cda1a9dd200 Mon Sep 17 00:00:00 2001
From: Filipe Brandenburger <filbranden@google.com>
Date: Mon, 25 Jun 2018 18:07:48 -0700
Subject: [PATCH] resolvconf: fixes for the compatibility interface
Also use compat_main() when called as `resolvconf`, since the interface
is closer to that of `systemd-resolve`.
Use a heap allocated string to set arg_ifname, since a stack allocated
one would be lost after the function returns. (This last one broke the
case where an interface name was suffixed with a dot, such as in
`resolvconf -a tap0.dhcp`.)
Tested:
$ build/resolvconf -a nonexistent.abc </etc/resolv.conf
Unknown interface 'nonexistent': No such device
Fixes #9423.
(cherry picked from commit 5a01b3f35d7b6182c78b6973db8d99bdabd4f9c3)
Resolves: #1835594
---
src/resolve/resolvconf-compat.c | 4 +++-
src/resolve/resolvectl.c | 2 +-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/resolve/resolvconf-compat.c b/src/resolve/resolvconf-compat.c
index d7e68003e6..0723458945 100644
--- a/src/resolve/resolvconf-compat.c
+++ b/src/resolve/resolvconf-compat.c
@@ -53,6 +53,8 @@ static int parse_nameserver(const char *string) {
if (strv_push(&arg_set_dns, word) < 0)
return log_oom();
+
+ word = NULL;
}
return 0;
@@ -202,7 +204,7 @@ int resolvconf_parse_argv(int argc, char *argv[]) {
dot = strchr(argv[optind], '.');
if (dot) {
- iface = strndupa(argv[optind], dot - argv[optind]);
+ iface = strndup(argv[optind], dot - argv[optind]);
log_debug("Ignoring protocol specifier '%s'.", dot + 1);
} else
iface = argv[optind];
diff --git a/src/resolve/resolvectl.c b/src/resolve/resolvectl.c
index cf1ec323a4..355e5c62b1 100644
--- a/src/resolve/resolvectl.c
+++ b/src/resolve/resolvectl.c
@@ -3090,7 +3090,7 @@ int main(int argc, char **argv) {
goto finish;
}
- if (streq(program_invocation_short_name, "systemd-resolve"))
+ if (STR_IN_SET(program_invocation_short_name, "systemd-resolve", "resolvconf"))
r = compat_main(argc, argv, bus);
else
r = native_main(argc, argv, bus);