[ostree] gnomeos: Some yocto work



commit 070b2cbb747464d9e3e5f7a491a73bee8db6b506
Author: Colin Walters <walters verbum org>
Date:   Sun Nov 13 18:53:14 2011 -0500

    gnomeos: Some yocto work

 gnomeos/ostree-init/.gitignore                     |    1 +
 gnomeos/yocto/TODO                                 |    3 +
 .../NetworkManager/NetworkManager.inc              |    6 +-
 .../NetworkManager/NetworkManager_0.8.997.bb       |    4 -
 .../NetworkManager/NetworkManager_0.9.2.0.bb       |    3 +
 .../yocto/recipies-core/images/gnomeos-image.bb    |   11 +-
 gnomeos/yocto/recipies-core/ostree-init/COPYING    |  340 ++++++++++++++++++++
 .../yocto/recipies-core/ostree-init/ostree-init.bb |   12 +
 .../yocto/recipies-core/ostree-init/ostree-init.c  |  159 +++++++++
 9 files changed, 522 insertions(+), 17 deletions(-)
---
diff --git a/gnomeos/ostree-init/.gitignore b/gnomeos/ostree-init/.gitignore
new file mode 100644
index 0000000..2b0f05d
--- /dev/null
+++ b/gnomeos/ostree-init/.gitignore
@@ -0,0 +1 @@
+ostree-init
diff --git a/gnomeos/yocto/TODO b/gnomeos/yocto/TODO
new file mode 100644
index 0000000..2f2a16c
--- /dev/null
+++ b/gnomeos/yocto/TODO
@@ -0,0 +1,3 @@
+* Add ostree-init binary for the non-initramfs case
+  - Just need to do the chroot before running real init
+* Modify init scripts to do read only bind mounts etc.
diff --git a/gnomeos/yocto/recipies-core/NetworkManager/NetworkManager.inc b/gnomeos/yocto/recipies-core/NetworkManager/NetworkManager.inc
index 54fcd1e..e99743b 100644
--- a/gnomeos/yocto/recipies-core/NetworkManager/NetworkManager.inc
+++ b/gnomeos/yocto/recipies-core/NetworkManager/NetworkManager.inc
@@ -3,12 +3,12 @@ HOMEPAGE = "http://projects.gnome.org/NetworkManager/";
 LICENSE = "GPLv2+"
 LIC_FILES_CHKSUM = "file://COPYING;md5=cbbffd568227ada506640fe950a4823b"
 
-DEPENDS = "wpa-supplicant ppp glib-2.0 dbus-glib util-linux"
+DEPENDS = "gnutls wpa-supplicant libnl wireless-tools ppp glib-2.0 dbus-glib util-linux virtual/gettext"
 
-SRC_URI = "http://ftp.acc.umu.se/pub/GNOME/sources/NetworkManager/0.8/NetworkManager-${PV}.tar.bz2 \
+SRC_URI = "http://ftp.acc.umu.se/pub/GNOME/sources/NetworkManager/0.9/NetworkManager-${PV}.tar.bz2 \
            file://0001-configure-Allow-specifying-with-distro-generic.patch \
           "
 
 inherit autotools pkgconfig
 
-EXTRA_OECONF = "--with-distro=generic"
+EXTRA_OECONF = "--with-distro=generic --with-crypto=gnutls"
diff --git a/gnomeos/yocto/recipies-core/NetworkManager/NetworkManager_0.9.2.0.bb b/gnomeos/yocto/recipies-core/NetworkManager/NetworkManager_0.9.2.0.bb
new file mode 100644
index 0000000..bc4825d
--- /dev/null
+++ b/gnomeos/yocto/recipies-core/NetworkManager/NetworkManager_0.9.2.0.bb
@@ -0,0 +1,3 @@
+require NetworkManager.inc
+
+SRC_URI[sha256sum] = "a178ed2f0b5a1045ec47b217ea531d0feba9208f6bcfe64b701174a5c1479816"
diff --git a/gnomeos/yocto/recipies-core/images/gnomeos-image.bb b/gnomeos/yocto/recipies-core/images/gnomeos-image.bb
index 8cd5a45..16ce3a1 100644
--- a/gnomeos/yocto/recipies-core/images/gnomeos-image.bb
+++ b/gnomeos/yocto/recipies-core/images/gnomeos-image.bb
@@ -7,16 +7,7 @@ LICENSE = "LGPL2"
 
 inherit core-image
 
-PACKAGES = "\
-	task-gnomeos-base \
-	"
-
-RDEPENDS_task-gnomeos-base = "\
-	gtk+ \
-	mesa-dri \
-	task-core-x11 \
-	NetworkManager \
-	"
+IMAGE_INSTALL += "ostree-init"
 
 # remove not needed ipkg informations
 ROOTFS_POSTPROCESS_COMMAND += "remove_packaging_data_files ; "
diff --git a/gnomeos/yocto/recipies-core/ostree-init/COPYING b/gnomeos/yocto/recipies-core/ostree-init/COPYING
new file mode 100644
index 0000000..d60c31a
--- /dev/null
+++ b/gnomeos/yocto/recipies-core/ostree-init/COPYING
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
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+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
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+This General Public License does not permit incorporating your program into
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+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/gnomeos/yocto/recipies-core/ostree-init/ostree-init.bb b/gnomeos/yocto/recipies-core/ostree-init/ostree-init.bb
new file mode 100644
index 0000000..0c9056d
--- /dev/null
+++ b/gnomeos/yocto/recipies-core/ostree-init/ostree-init.bb
@@ -0,0 +1,12 @@
+SUMMARY = "Root switcher"
+LICENSE = "GPLv2+"
+LIC_FILES_CHKSUM = "file://COPYING;md5=94d55d512a9ba36caa9b7df079bae19f"
+
+SRC_URI = "file://ostree-init.c \
+	   file://Makefile.in \
+	   file://configure \
+	   file://COPYING"
+
+S = "${WORKDIR}"
+
+inherit autotools
diff --git a/gnomeos/yocto/recipies-core/ostree-init/ostree-init.c b/gnomeos/yocto/recipies-core/ostree-init/ostree-init.c
new file mode 100644
index 0000000..deeb330
--- /dev/null
+++ b/gnomeos/yocto/recipies-core/ostree-init/ostree-init.c
@@ -0,0 +1,159 @@
+/* -*- c-file-style: "gnu" -*-
+ * ostree-init.c - switch to new root directory and start init.
+ * Copyright 2011 Colin Walters <walters verbum org>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#define _GNU_SOURCE
+#include <sys/mount.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <fcntl.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#include <dirent.h>
+
+#define INIT_PATH "/sbin/init"
+
+static int
+perrorv (const char *format, ...) __attribute__ ((format (printf, 1, 2)));
+
+static int
+perrorv (const char *format, ...)
+{
+  va_list args;
+  char buf[PATH_MAX];
+  char *p;
+
+  p = strerror_r (errno, buf, sizeof (buf));
+
+  va_start (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, ": %s\n", p);
+  fflush (stderr);
+
+  va_end (args);
+
+  sleep (3);
+	
+  return 0;
+}
+
+int main(int argc, char *argv[])
+{
+  FILE *cmdline_f = NULL;
+  const char *ostree_root = NULL;
+  const char *p = NULL;
+  size_t bytes_read;
+  size_t buf_size;
+  size_t buf_used;
+  char destpath[PATH_MAX];
+  char *buf;
+  struct stat stbuf;
+  char **init_argv = NULL;
+  int i;
+
+  cmdline_f = fopen ("/proc/cmdline", "r");
+  if (!cmdline_f)
+    {
+      perrorv ("Failed to open /proc/cmdline");
+      return 1;
+    }
+
+  buf_size = 8;
+  buf_used = 0;
+  buf = malloc (buf_size);
+  assert (buf);
+
+  while ((bytes_read = fread (buf + buf_used, 1, buf_size - buf_used, cmdline_f)) > 0)
+    {
+      buf_used += bytes_read;
+      if (buf_size == buf_used)
+	{
+	  buf_size *= 2;
+	  buf = realloc (buf, buf_size);
+	  assert (buf);
+	}
+    }
+  if (bytes_read < 0)
+    {
+      perrorv ("Failed to read from /proc/cmdline");
+      exit (1);
+    }
+
+  for (p = buf; *p; p += strlen (p) + 1)
+    {
+      if (!strcmp (p, "ostree="))
+	{
+	  ostree_root = p + strlen ("ostree=");
+	  break;
+	}
+    }
+
+  if (ostree_root)
+    {
+      snprintf (destpath, sizeof(destpath), "/ostree/%s", ostree_root);
+      if (stat (destpath, &stbuf) < 0)
+	{
+	  perrorv ("Invalid ostree root '%s'", destpath);
+	  exit (1);
+	}
+
+      snprintf (destpath, sizeof(destpath), "/ostree/%s/sysroot", ostree_root);
+      if (mount ("/", destpath, NULL, MS_BIND, NULL) < 0)
+	{
+	  perrorv ("Failed to bind mount / to '%s'", destpath);
+	  exit (1);
+	}
+
+      snprintf (destpath, sizeof(destpath), "/ostree/%s", ostree_root);
+      if (chroot (destpath) < 0)
+	{
+	  perrorv ("failed to change root to '%s'", destpath);
+	  exit (1);
+	}
+
+      if (chdir ("/") < 0)
+	{
+	  perrorv ("failed to chdir to subroot");
+	  exit (1);
+	}
+      
+    }
+  else
+    {
+      fprintf (stderr, "No ostree= argument specified\n");
+      exit (1);
+    }
+
+  init_argv = malloc (sizeof (char*)*(argc+1));
+  init_argv[0] = INIT_PATH;
+  for (i = 1; i < argc; i++)
+    init_argv[i] = argv[i];
+  init_argv[i] = NULL;
+  
+  execv (INIT_PATH, init_argv);
+  perrorv ("Failed to exec init '%s'", INIT_PATH);
+  exit (1);
+}
+



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