- djm@cvs.openbsd.org 2008/04/18 12:32:11
[sftp-client.c sftp-client.h sftp-server.c sftp.1 sftp.c sftp.h]
introduce sftp extension methods statvfs@openssh.com and
fstatvfs@openssh.com that implement statvfs(2)-like operations,
based on a patch from miklos AT szeredi.hu (bz#1399)
also add a "df" command to the sftp client that uses the
statvfs@openssh.com to produce a df(1)-like display of filesystem
space and inode utilisation
ok markus@
diff --git a/sftp-server.c b/sftp-server.c
index d9549f5..300fd5c 100644
--- a/sftp-server.c
+++ b/sftp-server.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sftp-server.c,v 1.78 2008/02/27 20:21:15 djm Exp $ */
+/* $OpenBSD: sftp-server.c,v 1.79 2008/04/18 12:32:11 djm Exp $ */
/*
* Copyright (c) 2000-2004 Markus Friedl. All rights reserved.
*
@@ -23,6 +23,8 @@
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
+#include <sys/mount.h>
+#include <sys/statvfs.h>
#include <dirent.h>
#include <errno.h>
@@ -475,6 +477,33 @@
buffer_free(&msg);
}
+static void
+send_statvfs(u_int32_t id, struct statvfs *st)
+{
+ Buffer msg;
+ u_int64_t flag;
+
+ flag = (st->f_flag & ST_RDONLY) ? SSH2_FXE_STATVFS_ST_RDONLY : 0;
+ flag |= (st->f_flag & ST_NOSUID) ? SSH2_FXE_STATVFS_ST_NOSUID : 0;
+
+ buffer_init(&msg);
+ buffer_put_char(&msg, SSH2_FXP_EXTENDED_REPLY);
+ buffer_put_int(&msg, id);
+ buffer_put_int(&msg, st->f_bsize);
+ buffer_put_int(&msg, st->f_frsize);
+ buffer_put_int64(&msg, st->f_blocks);
+ buffer_put_int64(&msg, st->f_bfree);
+ buffer_put_int64(&msg, st->f_bavail);
+ buffer_put_int64(&msg, st->f_files);
+ buffer_put_int64(&msg, st->f_ffree);
+ buffer_put_int64(&msg, st->f_favail);
+ buffer_put_int(&msg, st->f_fsid);
+ buffer_put_int(&msg, flag);
+ buffer_put_int(&msg, st->f_namemax);
+ send_msg(&msg);
+ buffer_free(&msg);
+}
+
/* parse incoming */
static void
@@ -490,6 +519,10 @@
/* POSIX rename extension */
buffer_put_cstring(&msg, "posix-rename@openssh.com");
buffer_put_cstring(&msg, "1"); /* version */
+ buffer_put_cstring(&msg, "statvfs@openssh.com");
+ buffer_put_cstring(&msg, "1"); /* version */
+ buffer_put_cstring(&msg, "fstatvfs@openssh.com");
+ buffer_put_cstring(&msg, "1"); /* version */
send_msg(&msg);
buffer_free(&msg);
}
@@ -1100,6 +1133,42 @@
}
static void
+process_extended_statvfs(u_int32_t id)
+{
+ char *path;
+ struct statvfs st;
+
+ path = get_string(NULL);
+ debug3("request %u: statfs", id);
+ logit("statfs \"%s\"", path);
+
+ if (statvfs(path, &st) != 0)
+ send_status(id, errno_to_portable(errno));
+ else
+ send_statvfs(id, &st);
+ xfree(path);
+}
+
+static void
+process_extended_fstatvfs(u_int32_t id)
+{
+ int handle, fd;
+ struct statvfs st;
+
+ handle = get_handle();
+ debug("request %u: fstatvfs \"%s\" (handle %u)",
+ id, handle_to_name(handle), handle);
+ if ((fd = handle_to_fd(handle)) < 0) {
+ send_status(id, SSH2_FX_FAILURE);
+ return;
+ }
+ if (fstatvfs(fd, &st) != 0)
+ send_status(id, errno_to_portable(errno));
+ else
+ send_statvfs(id, &st);
+}
+
+static void
process_extended(void)
{
u_int32_t id;
@@ -1109,6 +1178,10 @@
request = get_string(NULL);
if (strcmp(request, "posix-rename@openssh.com") == 0)
process_extended_posix_rename(id);
+ else if (strcmp(request, "statvfs@openssh.com") == 0)
+ process_extended_statvfs(id);
+ else if (strcmp(request, "fstatvfs@openssh.com") == 0)
+ process_extended_fstatvfs(id);
else
send_status(id, SSH2_FX_OP_UNSUPPORTED); /* MUST */
xfree(request);