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nmount: Ignore errors when copying out an error string

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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

(cherry picked from commit 099d25c354d93d9cd9c9cd261428f5ab0547a194)
This commit is contained in:
Mark Johnston 2023-12-25 20:43:21 -05:00
parent bd287fa8bc
commit 7bc713a5a5
1 changed files with 1 additions and 1 deletions
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2
sys/kern/vfs_mount.c
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@ -1025,7 +1025,7 @@ 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);
}