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ksmbd: don't remove dos attribute xattr on O_TRUNC open

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When smb client open file in ksmbd share with O_TRUNC, dos attribute
xattr is removed as well as data in file. This cause the FSCTL_SET_SPARSE
request from the client fails because ksmbd can't update the dos attribute
after setting ATTR_SPARSE_FILE. And this patch fix xfstests generic/469
test also.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Namjae Jeon 2022-08-14 22:40:25 +09:00 committed by Steve French
parent c90b31eaf9
commit 17661ecf6a
1 changed files with 9 additions and 9 deletions
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18
fs/ksmbd/smb2pdu.c
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@ -2330,15 +2330,15 @@ static int smb2_remove_smb_xattrs(struct path *path)
name += strlen(name) + 1) {
ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name));
if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) &&
strncmp(&name[XATTR_USER_PREFIX_LEN], DOS_ATTRIBUTE_PREFIX,
DOS_ATTRIBUTE_PREFIX_LEN) &&
strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, STREAM_PREFIX_LEN))
continue;
err = ksmbd_vfs_remove_xattr(user_ns, path->dentry, name);
if (err)
ksmbd_debug(SMB, "remove xattr failed : %s\n", name);
if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) &&
!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
STREAM_PREFIX_LEN)) {
err = ksmbd_vfs_remove_xattr(user_ns, path->dentry,
name);
if (err)
ksmbd_debug(SMB, "remove xattr failed : %s\n",
name);
}
}
out:
kvfree(xattr_list);