From: Felix Fietkau <nbd@nbd.name>
Date: Sun, 17 Aug 2025 09:10:49 +0000 (+0200)
Subject: ucode: add ferror() call to check for closed write file descriptor
X-Git-Url: http://git.openwrt.org/%22https:/collectd.org//%22http:/www.crowdsec.net/%22/%22https:/collectd.org/%22http:/www.crowdsec.net/%22?a=commitdiff_plain;h=892647b81d30fcec8d275a2c5da05b94192c095d;p=project%2Fudebug.git

ucode: add ferror() call to check for closed write file descriptor

Fixes stale udebug stream processes when run over ssh

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/lib-ucode.c b/lib-ucode.c
index d282197..00ab1c8 100644
--- a/lib-ucode.c
+++ b/lib-ucode.c
@@ -417,6 +417,9 @@ uc_udebug_pcap_write(uc_vm_t *vm, size_t nargs)
 		ret = true;
 	}
 
+	if (ferror(p->f))
+		return NULL;
+
 out:
 	return ucv_boolean_new(ret);
 }