From af1f90925494deba97a4b877798cf250f7dc75cf Mon Sep 17 00:00:00 2001 From: Darren Tucker Date: Sun, 5 Dec 2010 09:02:47 +1100 Subject: - djm@cvs.openbsd.org 2010/12/04 00:18:01 [sftp-server.c sftp.1 sftp-client.h sftp.c PROTOCOL sftp-client.c] add a protocol extension to support a hard link operation. It is available through the "ln" command in the client. The old "ln" behaviour of creating a symlink is available using its "-s" option or through the preexisting "symlink" command; based on a patch from miklos AT szeredi.hu in bz#1555; ok markus@ --- sftp-server.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) (limited to 'sftp-server.c') diff --git a/sftp-server.c b/sftp-server.c index 47edcd0a..b268d088 100644 --- a/sftp-server.c +++ b/sftp-server.c @@ -1,4 +1,4 @@ -/* $OpenBSD: sftp-server.c,v 1.92 2010/11/04 02:45:34 djm Exp $ */ +/* $OpenBSD: sftp-server.c,v 1.93 2010/12/04 00:18:01 djm Exp $ */ /* * Copyright (c) 2000-2004 Markus Friedl. All rights reserved. * @@ -535,6 +535,9 @@ process_init(void) /* fstatvfs extension */ buffer_put_cstring(&msg, "fstatvfs@openssh.com"); buffer_put_cstring(&msg, "2"); /* version */ + /* hardlink extension */ + buffer_put_cstring(&msg, "hardlink@openssh.com"); + buffer_put_cstring(&msg, "1"); /* version */ send_msg(&msg); buffer_free(&msg); } @@ -1222,6 +1225,27 @@ process_extended_fstatvfs(u_int32_t id) send_statvfs(id, &st); } +static void +process_extended_hardlink(u_int32_t id) +{ + char *oldpath, *newpath; + int ret, status; + + oldpath = get_string(NULL); + newpath = get_string(NULL); + debug3("request %u: hardlink", id); + logit("hardlink old \"%s\" new \"%s\"", oldpath, newpath); + if (readonly) + status = SSH2_FX_PERMISSION_DENIED; + else { + ret = link(oldpath, newpath); + status = (ret == -1) ? errno_to_portable(errno) : SSH2_FX_OK; + } + send_status(id, status); + xfree(oldpath); + xfree(newpath); +} + static void process_extended(void) { @@ -1236,6 +1260,8 @@ process_extended(void) process_extended_statvfs(id); else if (strcmp(request, "fstatvfs@openssh.com") == 0) process_extended_fstatvfs(id); + else if (strcmp(request, "hardlink@openssh.com") == 0) + process_extended_hardlink(id); else send_status(id, SSH2_FX_OP_UNSUPPORTED); /* MUST */ xfree(request); -- cgit v1.2.1