Annotated linux kernel syscalls using a new plugin.

1 files changed, 108 insertions, 0 deletions

diff --git a/plugins/lnxsyscalls/syscall.c b/plugins/lnxsyscalls/syscall.c
new file mode 100644
index 0000000..e177d6e
--- /dev/null
+++ b/plugins/lnxsyscalls/syscall.c
@@ -0,0 +1,108 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * syscall.h - prototypes pour la définition d'appels système Linux
+ *
+ * Copyright (C) 2018 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide 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.
+ *
+ *  Chrysalide 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 Chrysalide.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "syscall.h"
+
+
+#include <assert.h>
+#include <malloc.h>
+#include <string.h>
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : nr   = indice de l'appel système à décrire.                  *
+*                name = désignation humaine de ce même appel système.         *
+*                                                                             *
+*  Description : Crée un début de description d'appel système.                *
+*                                                                             *
+*  Retour      : Structure mise en place.                                     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+syscall_info_t *create_syscall_info(unsigned int nr, const char *name)
+{
+    syscall_info_t *result;                 /* Description à retourner     */
+
+    result = (syscall_info_t *)calloc(1, sizeof(syscall_info_t));
+
+    result->nr = nr;
+    result->name = strdup(name);
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : info = description d'appel système à supprimer.              *
+*                                                                             *
+*  Description : Efface de la mémoire une description d'appel système.        *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+void delete_syscall_info(syscall_info_t *info)
+{
+    size_t i;                               /* Boucle de parcours          */
+
+    free(info->name);
+
+    for (i = 0; i < info->argc; i++)
+        free(info->argv[i]);
+
+    if (info->filename != NULL)
+        free(info->filename);
+
+    free(info);
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : info = description d'appel système à compléter.              *
+*                arg  = description d'un argument supplémentaire.             *
+*                                                                             *
+*  Description : Ajoute un argument à une description d'appel système.        *
+*                                                                             *
+*  Retour      : Structure mise en place.                                     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+void append_arg_to_syscall_info(syscall_info_t *info, const char *arg)
+{
+    assert(info->argc < 6);
+
+    info->argv[info->argc++] = strdup(arg);
+
+}