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s3: smbd: Protect dos_mode_at_send() from running into a symlink.

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Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Noel Power<npower@samba.org>
This commit is contained in:
Jeremy Allison 2021-06-10 10:30:17 -07:00 committed by Noel Power
parent 4152499652
commit 72ace149f9
1 changed files with 14 additions and 0 deletions
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14
source3/smbd/dosmode.c
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@ -817,6 +817,20 @@ struct tevent_req *dos_mode_at_send(TALLOC_CTX *mem_ctx,
return tevent_req_post(req, ev);
}
if (smb_fname->fsp == NULL) {
/*
* The pathological case where a caller does
* dos_mode_at_send() and smb_fname points at a
* symlink in POSIX context. smb_fname->fsp is NULL.
*
* FIXME ? Should we move to returning
* FILE_ATTRIBUTE_REPARSE_POINT here ?
*/
state->dosmode = FILE_ATTRIBUTE_NORMAL;
tevent_req_done(req);
return tevent_req_post(req, ev);
}
subreq = SMB_VFS_GET_DOS_ATTRIBUTES_SEND(state,
ev,
dir_fsp,