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wifi-scripts: iwinfo scan() must not abort the interpreter on failure

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Replace exit(1) on every failure path with return null so callers that
iterate over multiple radios can collect results from the radios that
did succeed instead of aborting on the first one that refuses an
off-channel scan.

Route diagnostics to stderr via warn() so stdout stays clean for
callers parsing JSON output, and include the device name in each
message to disambiguate per-radio failures.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
John Crispin
2026-04-14 13:30:41 +02:00
committed by Felix Fietkau
parent cb7414055c
commit 0c2fb39c5a
1 changed files with 10 additions and 9 deletions
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package/network/config/wifi-scripts/files-ucode/usr/share/ucode/iwinfo.uc
+10 -9
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@@ -577,23 +577,24 @@ export function scan(dev) {
scan_ssids: [ '' ],
};
let res = nl80211.request(nl80211.const.NL80211_CMD_TRIGGER_SCAN, 0, params);
if (res === false) {
printf("Unable to trigger scan: " + nl80211.error() + "\n");
exit(1);
nl80211.request(nl80211.const.NL80211_CMD_TRIGGER_SCAN, 0, params);
let err = nl80211.error();
if (err) {
warn("Unable to trigger scan on " + dev + ": " + err + "\n");
return null;
}
res = nl80211.waitfor([
let res = nl80211.waitfor([
nl80211.const.NL80211_CMD_NEW_SCAN_RESULTS,
nl80211.const.NL80211_CMD_SCAN_ABORTED
], 5000);
if (!res) {
printf("Netlink error while awaiting scan results: " + nl80211.error() + "\n");
exit(1);
warn("Netlink error while awaiting scan results on " + dev + ": " + nl80211.error() + "\n");
return null;
} else if (res.cmd == nl80211.const.NL80211_CMD_SCAN_ABORTED) {
printf("Scan aborted by kernel\n");
exit(1);
warn("Scan aborted by kernel on " + dev + "\n");
return null;
}
let scan = nl80211.request(nl80211.const.NL80211_CMD_GET_SCAN, nl80211.const.NLM_F_DUMP, { dev });