git: 9a3edc8d5dbc - main - zfs readdir: if there were no dirents to copy out, return EINVAL same as UFS

[Konstantin Belousov]

The branch main has been updated by kib:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=9a3edc8d5dbcb896179cfa7867f961184e146a09

commit 9a3edc8d5dbcb896179cfa7867f961184e146a09
Author:     Konstantin Belousov <k...@freebsd.org>
AuthorDate: 2025-08-16 01:33:09 +0000
Commit:     Konstantin Belousov <k...@freebsd.org>
CommitDate: 2025-08-18 13:30:04 +0000

    zfs readdir: if there were no dirents to copy out, return EINVAL same as UFS
    
    Reviewed by:    allanjude, markj, rmacklem
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
    Differential revision:  https://reviews.freebsd.org/D51930
---
 sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c 
b/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
index 6b55329da7a7..174141a5deab 100644
--- a/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
+++ b/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
@@ -1695,6 +1695,7 @@ zfs_readdir(vnode_t *vp, zfs_uio_t *uio, cred_t *cr, int 
*eofp,
        objset_t        *os;
        caddr_t         outbuf;
        size_t          bufsize;
+       ssize_t         orig_resid;
        zap_cursor_t    zc;
        zap_attribute_t *zap;
        uint_t          bytes_wanted;
@@ -1743,6 +1744,7 @@ zfs_readdir(vnode_t *vp, zfs_uio_t *uio, cred_t *cr, int 
*eofp,
        error = 0;
        os = zfsvfs->z_os;
        offset = zfs_uio_offset(uio);
+       orig_resid = zfs_uio_resid(uio);
        prefetch = zp->z_zn_prefetch;
        zap = zap_attribute_long_alloc();
 
@@ -1922,7 +1924,7 @@ update:
                kmem_free(outbuf, bufsize);
 
        if (error == ENOENT)
-               error = 0;
+               error = orig_resid == zfs_uio_resid(uio) ? EINVAL : 0;
 
        ZFS_ACCESSTIME_STAMP(zfsvfs, zp);