git: 099d25c354d9 - main - nmount: Ignore errors when copying out an error string

From: Mark Johnston <markj_at_FreeBSD.org>
Date: Tue, 26 Dec 2023 02:04:33 UTC
The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=099d25c354d93d9cd9c9cd261428f5ab0547a194

commit 099d25c354d93d9cd9c9cd261428f5ab0547a194
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2023-12-26 01:43:21 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2023-12-26 02:04:01 +0000

    nmount: Ignore errors when copying out an error string
    
    In general we copy error strings as part of reporting an error from
    lower layers, so if the copyout() fails there's nothing to do since we'd
    prefer to preserve the original error.
    
    This is in preparation for annotating copyin() and related functions
    with __result_use_check.
    
    Reviewed by:    olce, kib
    MFC after:      1 week
    Differential Revision:  https://reviews.freebsd.org/D43147
---
 sys/kern/vfs_mount.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/kern/vfs_mount.c b/sys/kern/vfs_mount.c
index 331e4887c200..347ec7f70aaf 100644
--- a/sys/kern/vfs_mount.c
+++ b/sys/kern/vfs_mount.c
@@ -1024,7 +1024,7 @@ bail:
 			    fsoptions->uio_iov[2 * errmsg_pos + 1].iov_base,
 			    fsoptions->uio_iov[2 * errmsg_pos + 1].iov_len);
 		} else {
-			copyout(errmsg,
+			(void)copyout(errmsg,
 			    fsoptions->uio_iov[2 * errmsg_pos + 1].iov_base,
 			    fsoptions->uio_iov[2 * errmsg_pos + 1].iov_len);
 		}