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// --------------------------------------------------------------------------
//
// File
// Name: intercept.h
// Purpose: Syscall interception code for unit tests
// Created: 2006/11/29
//
// --------------------------------------------------------------------------
#ifndef INTERCEPT_H
#define INTERCEPT_H
#ifndef PLATFORM_CLIB_FNS_INTERCEPTION_IMPOSSIBLE
#include <dirent.h>
#ifdef __NetBSD__ //__NetBSD_Version__ is defined in sys/param.h
#include <sys/param.h>
#endif
#if defined __NetBSD_Version__ && __NetBSD_Version__ >= 399000800 //3.99.8 vers.
#define FUNC_OPENDIR "__opendir30"
#define FUNC_READDIR "__readdir30"
#else
#define FUNC_OPENDIR "opendir"
#define FUNC_READDIR "readdir"
#endif
#include <sys/types.h>
#include <sys/stat.h>
extern "C"
{
typedef DIR *(opendir_t) (const char *name);
typedef struct dirent *(readdir_t) (DIR *dir);
typedef struct dirent *(readdir_t) (DIR *dir);
typedef int (closedir_t)(DIR *dir);
#if defined __GNUC__ && __GNUC__ >= 2
#define LINUX_WEIRD_LSTAT
#define STAT_STRUCT struct stat /* should be stat64 */
typedef int (lstat_t) (int ver, const char *file_name,
STAT_STRUCT *buf);
#else
#define STAT_STRUCT struct stat
typedef int (lstat_t) (const char *file_name,
STAT_STRUCT *buf);
#endif
}
typedef int (lstat_post_hook_t) (int old_ret, const char *file_name,
struct stat *buf);
void intercept_setup_error(const char *filename, unsigned int errorafter,
int errortoreturn, int syscalltoerror);
void intercept_setup_delay(const char *filename, unsigned int delay_after,
int delay_ms, int syscall_to_delay, int num_delays);
bool intercept_triggered();
void intercept_setup_readdir_hook(const char *dirname, readdir_t hookfn);
void intercept_setup_lstat_hook (const char *filename, lstat_t hookfn);
void intercept_setup_lstat_post_hook(lstat_post_hook_t hookfn);
void intercept_setup_stat_post_hook (lstat_post_hook_t hookfn);
void intercept_clear_setup();
// Some newer architectures don't have an open() syscall, but use openat() instead.
// In these cases we define SYS_open (which is otherwise undefined) to equal SYS_openat
// (which is defined) so that everywhere else we can call intercept_setup_error(SYS_open)
// without caring about the difference.
// https://chromium.googlesource.com/linux-syscall-support/
#if !HAVE_DECL_SYS_OPEN && HAVE_DECL_SYS_OPENAT
# define SYS_open SYS_openat
#endif
#endif // !PLATFORM_CLIB_FNS_INTERCEPTION_IMPOSSIBLE
#endif // !INTERCEPT_H
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