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libsysprof/util: add helper to get proc file

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This helper allows us to get the file locally or via sysprofd when the
GDBusConnection is provided.

Be careful about use as your local /proc may be different than the
"system" /proc where sysprofd lives.
This commit is contained in:
Christian Hergert
2025-03-21 12:00:14 -07:00
parent ae58643f4d
commit 2971f34541
3 changed files with 99 additions and 0 deletions
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1
src/libsysprof/meson.build
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@ -156,6 +156,7 @@ libsysprof_private_sources = [
'sysprof-process-info.c',
'sysprof-strings.c',
'sysprof-symbol-cache.c',
'sysprof-util.c',
'timsort/gtktimsort.c',
gnome.gdbus_codegen('ipc-unwinder',

31
src/libsysprof/sysprof-util-private.h Normal file
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@ -0,0 +1,31 @@
/*
* sysprof-util-private.h
*
* Copyright 2025 Christian Hergert <chergert@redhat.com>
*
* 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 3 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/>.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#pragma once
#include <libdex.h>
G_BEGIN_DECLS
DexFuture *sysprof_get_proc_file_bytes (GDBusConnection *connection,
const char *path);
G_END_DECLS

67
src/libsysprof/sysprof-util.c Normal file
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@ -0,0 +1,67 @@
/*
* sysprof-util.c
*
* Copyright 2025 Christian Hergert <chergert@redhat.com>
*
* 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 3 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/>.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include "config.h"
#include "sysprof-util-private.h"
DexFuture *
sysprof_get_proc_file_bytes (GDBusConnection *connection,
const char *path)
{
g_autoptr(GError) error = NULL;
dex_return_error_if_fail (!connection || G_IS_DBUS_CONNECTION (connection));
dex_return_error_if_fail (path != NULL);
if (connection != NULL)
{
g_autoptr(GVariant) reply = NULL;
g_autoptr(GBytes) bytes = NULL;
const char *contents = NULL;
if (!(reply = dex_await_variant (dex_dbus_connection_call (connection,
"org.gnome.Sysprof3",
"/org/gnome/Sysprof3",
"org.gnome.Sysprof3.Service",
"GetProcFile",
g_variant_new ("(^ay)", path),
G_VARIANT_TYPE ("(ay)"),
G_DBUS_CALL_FLAGS_ALLOW_INTERACTIVE_AUTHORIZATION,
G_MAXINT),
&error)))
return dex_future_new_for_error (g_steal_pointer (&error));
g_variant_get (reply, "(^&ay)", &contents);
g_assert (contents != NULL);
return dex_future_new_take_boxed (G_TYPE_BYTES,
g_bytes_new_with_free_func (contents, strlen (contents),
(GDestroyNotify) g_variant_unref,
g_steal_pointer (&reply)));
}
else
{
g_autoptr(GFile) file = g_file_new_for_path (path);
return dex_file_load_contents_bytes (file);
}
}