mirror of
https://github.com/ostreedev/ostree.git
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659c99417c
Since we're making a shared library, it should be usable by non-GPL apps. To allow more code sharing between the core and the tests, move them to the LGPLv2+ too. A few bits of test and other code are still GPL. See the new COPYING file for more information.
363 lines
9.7 KiB
C
363 lines
9.7 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
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*
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* Copyright (C) 2011 Colin Walters <walters@verbum.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Colin Walters <walters@verbum.org>
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*/
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#include "config.h"
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#include "ostree.h"
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#include "otutil.h"
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enum {
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PROP_0,
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PROP_REPO,
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PROP_PATH
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};
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G_DEFINE_TYPE (OstreeCheckout, ostree_checkout, G_TYPE_OBJECT)
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#define GET_PRIVATE(o) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((o), OSTREE_TYPE_CHECKOUT, OstreeCheckoutPrivate))
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typedef struct _OstreeCheckoutPrivate OstreeCheckoutPrivate;
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struct _OstreeCheckoutPrivate {
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OstreeRepo *repo;
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char *path;
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};
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static void
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ostree_checkout_finalize (GObject *object)
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{
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OstreeCheckout *self = OSTREE_CHECKOUT (object);
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OstreeCheckoutPrivate *priv = GET_PRIVATE (self);
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g_free (priv->path);
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g_clear_object (&priv->repo);
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G_OBJECT_CLASS (ostree_checkout_parent_class)->finalize (object);
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}
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static void
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ostree_checkout_set_property(GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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OstreeCheckout *self = OSTREE_CHECKOUT (object);
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OstreeCheckoutPrivate *priv = GET_PRIVATE (self);
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switch (prop_id)
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{
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case PROP_PATH:
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priv->path = g_value_dup_string (value);
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break;
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case PROP_REPO:
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priv->repo = g_value_dup_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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ostree_checkout_get_property(GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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OstreeCheckout *self = OSTREE_CHECKOUT (object);
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OstreeCheckoutPrivate *priv = GET_PRIVATE (self);
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switch (prop_id)
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{
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case PROP_PATH:
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g_value_set_string (value, priv->path);
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break;
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case PROP_REPO:
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g_value_set_object (value, priv->repo);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GObject *
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ostree_checkout_constructor (GType gtype,
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guint n_properties,
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GObjectConstructParam *properties)
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{
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GObject *object;
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GObjectClass *parent_class;
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OstreeCheckoutPrivate *priv;
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parent_class = G_OBJECT_CLASS (ostree_checkout_parent_class);
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object = parent_class->constructor (gtype, n_properties, properties);
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priv = GET_PRIVATE (object);
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g_assert (priv->path != NULL);
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return object;
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}
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static void
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ostree_checkout_class_init (OstreeCheckoutClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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g_type_class_add_private (klass, sizeof (OstreeCheckoutPrivate));
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object_class->constructor = ostree_checkout_constructor;
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object_class->get_property = ostree_checkout_get_property;
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object_class->set_property = ostree_checkout_set_property;
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object_class->finalize = ostree_checkout_finalize;
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g_object_class_install_property (object_class,
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PROP_PATH,
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g_param_spec_string ("path", "", "",
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NULL,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
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g_object_class_install_property (object_class,
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PROP_REPO,
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g_param_spec_object ("repo", "", "",
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OSTREE_TYPE_REPO,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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ostree_checkout_init (OstreeCheckout *self)
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{
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}
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OstreeCheckout*
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ostree_checkout_new (OstreeRepo *repo,
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const char *path)
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{
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return g_object_new (OSTREE_TYPE_CHECKOUT, "repo", repo, "path", path, NULL);
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}
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static gboolean
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executable_exists_in_checkout (const char *path,
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const char *executable)
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{
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int i;
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const char *subdirs[] = {"bin", "sbin", "usr/bin", "usr/sbin"};
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for (i = 0; i < G_N_ELEMENTS (subdirs); i++)
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{
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char *possible_path = g_build_filename (path, subdirs[i], executable, NULL);
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gboolean exists;
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exists = g_file_test (possible_path, G_FILE_TEST_EXISTS);
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g_free (possible_path);
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if (exists)
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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run_trigger (OstreeCheckout *self,
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GFile *trigger,
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gboolean requires_chroot,
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GError **error)
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{
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OstreeCheckoutPrivate *priv = GET_PRIVATE (self);
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gboolean ret = FALSE;
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char *path = NULL;
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char *temp_path = NULL;
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char *rel_temp_path = NULL;
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GFile *temp_copy = NULL;
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char *basename = NULL;
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GPtrArray *args = NULL;
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int estatus;
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path = g_file_get_path (trigger);
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basename = g_path_get_basename (path);
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args = g_ptr_array_new ();
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if (requires_chroot)
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{
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temp_path = g_build_filename (priv->path, basename, NULL);
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rel_temp_path = g_strconcat ("./", basename, NULL);
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temp_copy = ot_util_new_file_for_path (temp_path);
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if (!g_file_copy (trigger, temp_copy, 0, NULL, NULL, NULL, error))
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goto out;
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g_ptr_array_add (args, "chroot");
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g_ptr_array_add (args, ".");
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g_ptr_array_add (args, rel_temp_path);
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g_ptr_array_add (args, NULL);
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}
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else
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{
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g_ptr_array_add (args, path);
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g_ptr_array_add (args, NULL);
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}
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g_print ("Running trigger: %s\n", path);
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if (!g_spawn_sync (priv->path,
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(char**)args->pdata,
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NULL,
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G_SPAWN_SEARCH_PATH,
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NULL, NULL, NULL, NULL,
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&estatus,
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error))
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{
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g_prefix_error (error, "Failed to run trigger %s: ", basename);
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goto out;
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}
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ret = TRUE;
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out:
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if (requires_chroot && temp_path)
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(void)unlink (temp_path);
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g_free (path);
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g_free (basename);
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g_free (temp_path);
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g_free (rel_temp_path);
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g_clear_object (&temp_copy);
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if (args)
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g_ptr_array_free (args, TRUE);
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return ret;
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}
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static gboolean
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check_trigger (OstreeCheckout *self,
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GFile *trigger,
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GError **error)
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{
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OstreeCheckoutPrivate *priv = GET_PRIVATE (self);
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gboolean ret = FALSE;
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GInputStream *instream = NULL;
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GDataInputStream *datain = NULL;
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GError *temp_error = NULL;
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char *line;
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gsize len;
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gboolean requires_chroot = TRUE;
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gboolean matches = FALSE;
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instream = (GInputStream*)g_file_read (trigger, NULL, error);
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if (!instream)
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goto out;
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datain = g_data_input_stream_new (instream);
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while ((line = g_data_input_stream_read_line (datain, &len, NULL, &temp_error)) != NULL)
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{
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if (g_str_has_prefix (line, "# IfExecutable: "))
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{
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char *executable = g_strdup (line + strlen ("# IfExecutable: "));
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g_strchomp (executable);
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matches = executable_exists_in_checkout (priv->path, executable);
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g_free (executable);
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}
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g_free (line);
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}
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if (line == NULL && temp_error != NULL)
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{
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g_propagate_error (error, temp_error);
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goto out;
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}
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if (matches)
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{
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if (!run_trigger (self, trigger, requires_chroot, error))
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goto out;
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}
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ret = TRUE;
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out:
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g_clear_object (&instream);
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g_clear_object (&datain);
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return ret;
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}
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gboolean
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ostree_checkout_run_triggers (OstreeCheckout *self,
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GError **error)
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{
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gboolean ret = FALSE;
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GError *temp_error = NULL;
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char *triggerdir_path = NULL;
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GFile *triggerdir = NULL;
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GFileInfo *file_info = NULL;
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GFileEnumerator *enumerator = NULL;
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triggerdir_path = g_build_filename (LIBEXECDIR, "ostree", "triggers.d", NULL);
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triggerdir = ot_util_new_file_for_path (triggerdir_path);
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enumerator = g_file_enumerate_children (triggerdir, OSTREE_GIO_FAST_QUERYINFO,
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G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
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NULL,
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error);
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if (!enumerator)
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goto out;
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while ((file_info = g_file_enumerator_next_file (enumerator, NULL, &temp_error)) != NULL)
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{
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const char *name;
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guint32 type;
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char *child_path = NULL;
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GFile *child = NULL;
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gboolean success;
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name = g_file_info_get_attribute_byte_string (file_info, "standard::name");
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type = g_file_info_get_attribute_uint32 (file_info, "standard::type");
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if (type == G_FILE_TYPE_REGULAR && g_str_has_suffix (name, ".trigger"))
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{
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child_path = g_build_filename (triggerdir_path, name, NULL);
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child = ot_util_new_file_for_path (child_path);
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success = check_trigger (self, child, error);
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}
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else
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success = TRUE;
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g_object_unref (file_info);
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g_free (child_path);
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g_clear_object (&child);
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if (!success)
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goto out;
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}
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if (file_info == NULL && temp_error != NULL)
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{
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g_propagate_error (error, temp_error);
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goto out;
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}
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ret = TRUE;
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out:
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g_free (triggerdir_path);
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g_clear_object (&triggerdir);
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g_clear_object (&enumerator);
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return ret;
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}
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