The branch main has been updated by vmaffione:
URL:
https://cgit.FreeBSD.org/src/commit/?id=ab639bb2873034786cd2ec4d2d9c4489fbf6f424
commit ab639bb2873034786cd2ec4d2d9c4489fbf6f424
Author: Vincenzo Maffione <vmaffi...@freebsd.org>
AuthorDate: 2021-04-02 14:31:57 +0000
Commit: Vincenzo Maffione <vmaffi...@freebsd.org>
CommitDate: 2021-04-02 14:31:57 +0000
libnetmap: reset errno in nmreq_register_decode()
The reset is necessary at the beginning of the function, because of
the errno logic in the error path (set errno to EINVAL if not set).
If errno is already set when calling the function, and the function
fails, the previous errno value will be inherited.
---
lib/libnetmap/nmreq.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/libnetmap/nmreq.c b/lib/libnetmap/nmreq.c
index 390f791cb4dd..2c35b3a30089 100644
--- a/lib/libnetmap/nmreq.c
+++ b/lib/libnetmap/nmreq.c
@@ -257,6 +257,8 @@ nmreq_register_decode(const char **pifname, struct
nmreq_register *r, struct nmc
uint16_t nr_ringid;
uint64_t nr_flags;
+ errno = 0;
+
/* fill the request */
p_state = P_START;
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