8:33 a.m.
echo_daemon is a simple echo which can be used to test connectivity between the
client and daemon.
---
daemon/Makefile.am | 1 +
daemon/echo_daemon.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
daemon/m4/stddef_h.m4 | 45 +++++++++++++++++++++++++++++++++
po/POTFILES.in | 1 +
src/MAX_PROC_NR | 2 +-
src/generator.ml | 7 +++++
6 files changed, 121 insertions(+), 1 deletions(-)
create mode 100644 daemon/echo_daemon.c
create mode 100644 daemon/m4/stddef_h.m4
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 83ee408..ae74699 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -36,6 +36,7 @@ guestfsd_SOURCES = \
dmesg.c \
dropcaches.c \
du.c \
+ echo_daemon.c \
ext2.c \
fallocate.c \
file.c \
diff --git a/daemon/echo_daemon.c b/daemon/echo_daemon.c
new file mode 100644
index 0000000..dbede2f
--- /dev/null
+++ b/daemon/echo_daemon.c
@@ -0,0 +1,66 @@
+/* libguestfs - the guestfsd daemon
+ * Copyright (C) 2009 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "actions.h"
+
+char *
+do_echo_daemon (char *const *argv)
+{
+ char *out = NULL;
+ size_t out_len = 0;
+
+ /* Iterate over argv entries until reaching the NULL terminator */
+ while (*argv) {
+ char add_space = 0;
+
+ /* Store the end of current output */
+ size_t out_end = out_len;
+
+ /* Calculate the new output size */
+ size_t arg_len = strlen(*argv);
+ out_len += arg_len;
+
+ /* We will prepend a space if this isn't the first argument added */
+ if (NULL != out) {
+ out_len++;
+ add_space = 1;
+ }
+
+ /* Make the output buffer big enough for the string and its terminator */
+ out = realloc (out, out_len + 1);
+
+ /* Prepend a space if required */
+ if (add_space) {
+ out[out_end++] = ' ';
+ }
+
+ /* Copy the argument to the output */
+ memcpy(&out[out_end], *argv, arg_len);
+
+ argv++;
+ }
+
+ /* NULL terminate the output */
+ out[out_len] = '\0';
+
+ return out;
+}
diff --git a/daemon/m4/stddef_h.m4 b/daemon/m4/stddef_h.m4
new file mode 100644
index 0000000..682e9c6
--- /dev/null
+++ b/daemon/m4/stddef_h.m4
@@ -0,0 +1,45 @@
+dnl A placeholder for POSIX 2008 <stddef.h>, for platforms that have issues.
+# stddef_h.m4 serial 1
+dnl Copyright (C) 2009 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_STDDEF_H],
+[
+ AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+ AC_REQUIRE([gt_TYPE_WCHAR_T])
+ if test $gt_cv_c_wchar_t = no; then
+ HAVE_WCHAR_T=0
+ STDDEF_H=stddef.h
+ fi
+ AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions],
+ [gl_cv_decl_null_works],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
+ int test[2 * (sizeof NULL == sizeof (void *)) -1];
+]])],
+ [gl_cv_decl_null_works=yes],
+ [gl_cv_decl_null_works=no])])
+ if test $gl_cv_decl_null_works = no; then
+ REPLACE_NULL=1
+ STDDEF_H=stddef.h
+ fi
+ if test -n "$STDDEF_H"; then
+ gl_CHECK_NEXT_HEADERS([stddef.h])
+ fi
+])
+
+AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
+[
+ dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+ AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+
GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+])
+
+AC_DEFUN([gl_STDDEF_H_DEFAULTS],
+[
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ REPLACE_NULL=0; AC_SUBST([REPLACE_NULL])
+ HAVE_WCHAR_T=1; AC_SUBST([HAVE_WCHAR_T])
+ STDDEF_H=''; AC_SUBST([STDDEF_H])
+])
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 1b2f82a..44e472b 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -12,6 +12,7 @@ daemon/dir.c
daemon/dmesg.c
daemon/dropcaches.c
daemon/du.c
+daemon/echo_daemon.c
daemon/ext2.c
daemon/fallocate.c
daemon/file.c
diff --git a/src/MAX_PROC_NR b/src/MAX_PROC_NR
index 205a12b..6bb2f98 100644
--- a/src/MAX_PROC_NR
+++ b/src/MAX_PROC_NR
@@ -1 +1 @@
-194
+195
diff --git a/src/generator.ml b/src/generator.ml
index 439c9c4..f820e1f 100755
--- a/src/generator.ml
+++ b/src/generator.ml
@@ -3595,6 +3595,13 @@ This loads a kernel module in the appliance.
The kernel module must have been whitelisted when libguestfs
was built (see C<appliance/kmod.whitelist.in> in the source).");
+ ("echo_daemon", (RString "output", [StringList "words"]),
195, [],
+ [InitNone, Always, TestRun [["echo_daemon"; "\"This is a
test\""]]],
+ "echo arguments back to the client",
+ "\
+This commands works much like the unix echo command. It returns its arguments as
+a string.");
+
]
let all_functions = non_daemon_functions @ daemon_functions
--
1.6.2.5