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libsysprof: get kallsyms from helper

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This commit is contained in:
Christian Hergert
2019-05-09 16:33:23 -07:00
parent 2aea96d537
commit 0bb1eadf91
1 changed files with 16 additions and 81 deletions
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97
src/libsysprof/sysprof-kernel-symbol.c
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@ -23,11 +23,9 @@
#include "config.h"
#include <gio/gio.h>
#ifdef ENABLE_POLKIT
# include <polkit/polkit.h>
#endif
#include <sysprof-capture.h>
#include "sysprof-helpers.h"
#include "sysprof-kallsyms.h"
#include "sysprof-kernel-symbol.h"
@ -69,7 +67,7 @@ static const gchar *kernel_symbols_skip[] = {
static gint
sysprof_kernel_symbol_compare (gconstpointer a,
gconstpointer b)
gconstpointer b)
{
const SysprofKernelSymbol *syma = a;
const SysprofKernelSymbol *symb = b;
@ -89,96 +87,33 @@ type_is_ignored (guint8 type)
return (type != 't' && type != 'T');
}
static gboolean
authorize_proxy (GDBusConnection *conn)
{
#ifdef ENABLE_POLKIT
PolkitSubject *subject = NULL;
GPermission *permission = NULL;
const gchar *name;
g_assert (G_IS_DBUS_CONNECTION (conn));
name = g_dbus_connection_get_unique_name (conn);
if (name == NULL)
goto failure;
subject = polkit_system_bus_name_new (name);
if (subject == NULL)
goto failure;
permission = polkit_permission_new_sync ("org.gnome.sysprof2.get-kernel-symbols", subject, NULL, NULL);
if (permission == NULL)
goto failure;
if (!g_permission_acquire (permission, NULL, NULL))
goto failure;
return TRUE;
failure:
g_clear_object (&subject);
g_clear_object (&permission);
#endif
return FALSE;
}
static gboolean
sysprof_kernel_symbol_load_from_sysprofd (void)
{
g_autoptr(GDBusConnection) conn = NULL;
g_autoptr(GVariant) ret = NULL;
g_autoptr(GVariant) results = NULL;
SysprofHelpers *helpers = sysprof_helpers_get_default ();
g_autoptr(SysprofKallsyms) kallsyms = NULL;
g_autofree gchar *contents = NULL;
g_autoptr(GArray) ar = NULL;
g_autoptr(GError) error = NULL;
GVariantIter iter;
const gchar *name;
guint64 addr;
guint8 type;
if (!(conn = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, NULL)))
if (!sysprof_helpers_get_proc_file (helpers, "/proc/kallsyms", NULL, &contents, NULL))
return FALSE;
if (!authorize_proxy (conn))
kallsyms = sysprof_kallsyms_new_take (g_steal_pointer (&contents));
while (sysprof_kallsyms_next (kallsyms, &name, &addr, &type))
{
g_warning ("Failed to acquire sufficient credentials to read kernel symbols");
return FALSE;
}
if (!type_is_ignored (type))
{
SysprofKernelSymbol sym;
ret = g_dbus_connection_call_sync (conn,
"org.gnome.Sysprof2",
"/org/gnome/Sysprof2",
"org.gnome.Sysprof2",
"GetKernelSymbols",
NULL,
G_VARIANT_TYPE ("(a(tys))"),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
sym.address = addr;
sym.name = g_string_chunk_insert_const (kernel_symbol_strs, name);
if (error != NULL)
{
g_warning ("Failed to load symbols from sysprofd: %s", error->message);
return FALSE;
}
ar = g_array_new (FALSE, TRUE, sizeof (SysprofKernelSymbol));
results = g_variant_get_child_value (ret, 0);
g_variant_iter_init (&iter, results);
while (g_variant_iter_loop (&iter, "(ty&s)", &addr, &type, &name))
{
SysprofKernelSymbol sym;
if (type_is_ignored (type))
continue;
sym.address = addr;
sym.name = g_string_chunk_insert_const (kernel_symbol_strs, name);
g_array_append_val (ar, sym);
g_array_append_val (ar, sym);
}
}
g_array_sort (ar, sysprof_kernel_symbol_compare);