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s3: smbd: Change smb_unix_read_symlink() to use a real directory fsp for SMB_VFS_READLINKAT().

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Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Noel Power <noel.power@suse.com>
This commit is contained in:
Jeremy Allison 2021-02-10 14:50:36 -08:00
parent 92ec8a0097
commit 0cbb940080
1 changed files with 16 additions and 1 deletions
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17
source3/smbd/trans2.c
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@ -4957,6 +4957,9 @@ static NTSTATUS smb_unix_read_symlink(connection_struct *conn,
NTSTATUS status;
size_t len = 0;
int link_len = 0;
struct smb_filename *parent_fname = NULL;
struct smb_filename *base_name = NULL;
char *buffer = talloc_array(talloc_tos(), char, PATH_MAX+1);
if (!buffer) {
@ -4971,12 +4974,24 @@ static NTSTATUS smb_unix_read_symlink(connection_struct *conn,
return NT_STATUS_DOS(ERRSRV, ERRbadlink);
}
link_len = SMB_VFS_READLINKAT(conn,
status = parent_pathref(talloc_tos(),
conn->cwd_fsp,
smb_fname,
&parent_fname,
&base_name);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(buffer);
return status;
}
link_len = SMB_VFS_READLINKAT(conn,
parent_fname->fsp,
base_name,
buffer,
PATH_MAX);
TALLOC_FREE(parent_fname);
if (link_len == -1) {
TALLOC_FREE(buffer);
return map_nt_error_from_unix(errno);