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https://github.com/varun-r-mallya/sysprof.git
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sysprofd: implement org.gnome.Sysprof2 compatability API
This allows the new sysprofd to service requests for older clients expecting to talk to or.gnome.Sysprof2.
This commit is contained in:
Christian Hergert
216
src/sysprofd/ipc-legacy-impl.c
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216
src/sysprofd/ipc-legacy-impl.c
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/* ipc-legacy-impl.c
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*
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* Copyright 2019 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#define G_LOG_DOMAIN "ipc-legacy-impl"
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#include "config.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <gio/gunixfdlist.h>
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#include <polkit/polkit.h>
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#include <string.h>
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#include <sys/syscall.h>
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#include <time.h>
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#include <unistd.h>
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#include "../libsysprof/sysprof-kallsyms.h"
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#include "helpers.h"
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#include "ipc-legacy-impl.h"
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struct _IpcLegacyImpl
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{
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IpcLegacySysprof2Skeleton parent;
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};
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enum {
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ACTIVITY,
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N_SIGNALS
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};
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static guint signals [N_SIGNALS];
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static gboolean
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ipc_legacy_impl_handle_perf_event_open (IpcLegacySysprof2 *service,
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GDBusMethodInvocation *invocation,
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GVariant *options,
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gint32 pid,
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gint32 cpu,
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guint64 flags)
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{
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gint out_fd = -1;
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gint handle;
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g_assert (IPC_IS_LEGACY_IMPL (service));
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g_assert (G_IS_DBUS_METHOD_INVOCATION (invocation));
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g_message ("LEGACY: PerfEventOpen(pid=%d, cpu=%d)", pid, cpu);
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errno = 0;
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if (!helpers_perf_event_open (options, pid, cpu, -1, flags, &out_fd))
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{
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g_dbus_method_invocation_return_error (g_steal_pointer (&invocation),
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G_DBUS_ERROR,
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G_DBUS_ERROR_FAILED,
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"Failed to create perf counter: %s",
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g_strerror (errno));
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}
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else
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{
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g_autoptr(GUnixFDList) out_fd_list = g_unix_fd_list_new ();
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g_autoptr(GError) error = NULL;
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if (-1 == (handle = g_unix_fd_list_append (out_fd_list, out_fd, &error)))
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{
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g_dbus_method_invocation_return_error (g_steal_pointer (&invocation),
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G_DBUS_ERROR,
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G_DBUS_ERROR_LIMITS_EXCEEDED,
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"Failed to create file-descriptor for reply");
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}
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else
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{
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g_dbus_method_invocation_return_value_with_unix_fd_list (g_steal_pointer (&invocation),
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g_variant_new ("(h)", handle),
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out_fd_list);
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}
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}
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if (out_fd != -1)
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close (out_fd);
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return TRUE;
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}
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static gboolean
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ipc_legacy_impl_handle_get_kernal_symbols (IpcLegacySysprof2 *service,
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GDBusMethodInvocation *invocation)
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{
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g_autoptr(SysprofKallsyms) kallsyms = NULL;
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GVariantBuilder builder;
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const gchar *name;
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guint64 addr;
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guint8 type;
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g_assert (IPC_IS_LEGACY_IMPL (service));
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g_assert (G_IS_DBUS_METHOD_INVOCATION (invocation));
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g_message ("LEGACY: GetKernelSymbols()");
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if (!(kallsyms = sysprof_kallsyms_new ("/proc/kallsyms")))
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{
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g_dbus_method_invocation_return_error (g_steal_pointer (&invocation),
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G_DBUS_ERROR,
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G_DBUS_ERROR_FAILED,
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"Failed to create parse kallsyms");
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return TRUE;
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}
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g_variant_builder_init (&builder, G_VARIANT_TYPE ("a(tys)"));
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while (sysprof_kallsyms_next (kallsyms, &name, &addr, &type))
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g_variant_builder_add (&builder, "(tys)", addr, type, name);
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ipc_legacy_sysprof2_complete_get_kernel_symbols (service,
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g_steal_pointer (&invocation),
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g_variant_builder_end (&builder));
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return TRUE;
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}
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static gboolean
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ipc_legacy_impl_g_authorize_method (GDBusInterfaceSkeleton *skeleton,
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GDBusMethodInvocation *invocation)
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{
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PolkitAuthorizationResult *res = NULL;
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PolkitAuthority *authority = NULL;
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PolkitSubject *subject = NULL;
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const gchar *peer_name;
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gboolean ret = TRUE;
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g_assert (IPC_IS_LEGACY_IMPL (skeleton));
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g_assert (G_IS_DBUS_METHOD_INVOCATION (invocation));
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g_signal_emit (skeleton, signals [ACTIVITY], 0);
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peer_name = g_dbus_method_invocation_get_sender (invocation);
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if (!(authority = polkit_authority_get_sync (NULL, NULL)) ||
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!(subject = polkit_system_bus_name_new (peer_name)) ||
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!(res = polkit_authority_check_authorization_sync (authority,
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POLKIT_SUBJECT (subject),
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"org.gnome.sysprof3.profile",
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NULL,
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POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION,
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NULL,
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NULL)) ||
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!polkit_authorization_result_get_is_authorized (res))
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{
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g_dbus_method_invocation_return_error (g_steal_pointer (&invocation),
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G_DBUS_ERROR,
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G_DBUS_ERROR_ACCESS_DENIED,
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"Not authorized to make request");
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ret = FALSE;
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}
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g_clear_object (&authority);
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g_clear_object (&subject);
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g_clear_object (&res);
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return ret;
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}
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static void
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sysprof2_iface_init (IpcLegacySysprof2Iface *iface)
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{
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iface->handle_perf_event_open = ipc_legacy_impl_handle_perf_event_open;
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iface->handle_get_kernel_symbols = ipc_legacy_impl_handle_get_kernal_symbols;
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}
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G_DEFINE_TYPE_WITH_CODE (IpcLegacyImpl, ipc_legacy_impl, IPC_LEGACY_TYPE_SYSPROF2_SKELETON,
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G_IMPLEMENT_INTERFACE (IPC_LEGACY_TYPE_SYSPROF2, sysprof2_iface_init))
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static void
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ipc_legacy_impl_class_init (IpcLegacyImplClass *klass)
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{
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GDBusInterfaceSkeletonClass *skeleton_class = G_DBUS_INTERFACE_SKELETON_CLASS (klass);
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skeleton_class->g_authorize_method = ipc_legacy_impl_g_authorize_method;
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signals [ACTIVITY] =
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g_signal_new ("activity",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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0,
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NULL, NULL,
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NULL,
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G_TYPE_NONE, 0);
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}
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static void
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ipc_legacy_impl_init (IpcLegacyImpl *self)
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{
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g_dbus_interface_skeleton_set_flags (G_DBUS_INTERFACE_SKELETON (self),
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G_DBUS_INTERFACE_SKELETON_FLAGS_HANDLE_METHOD_INVOCATIONS_IN_THREAD);
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}
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IpcLegacySysprof2 *
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ipc_legacy_impl_new (void)
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{
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return g_object_new (IPC_TYPE_LEGACY_IMPL, NULL);
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}
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