#include <fcntl.h>
#include <stdarg.h>
#include <sys/param.h>
#include <sys/types.h>
#include <TargetConditionals.h>
#if !defined(__i386__)
#if TARGET_OS_OSX
#include <stdbool.h>
extern bool (*system_version_compat_check_path_suffix)(const char *orig_path);
extern int (*system_version_compat_open_shim)(int opened_fd, int openat_fd, const char *orig_path, int oflag, mode_t mode,
int (*close_syscall)(int), int (*open_syscall)(const char *, int, mode_t),
int (*openat_syscall)(int, const char *, int, mode_t),
int (*fcntl_syscall)(int, int, long));
#endif
#ifdef VARIANT_CANCELABLE
int __open(const char *path, int oflag, mode_t mode);
int __openat(int fd, const char *path, int oflag, mode_t mode);
#define OPEN_SYSCALL __open
#define OPENAT_SYSCALL __openat
#if TARGET_OS_OSX
int __fcntl(int fd, int cmd, long arg);
int close(int fd);
#define FCNTL_SYSCALL __fcntl
#define CLOSE_SYSCALL close
#endif
#else
int __open_nocancel(const char *path, int oflag, mode_t mode);
int __openat_nocancel(int fd, const char *path, int oflag, mode_t mode);
#define OPEN_SYSCALL __open_nocancel
#define OPENAT_SYSCALL __openat_nocancel
#if TARGET_OS_OSX
int __fcntl_nocancel(int fd, int cmd, long arg);
int __close_nocancel(int fd);
#define FCNTL_SYSCALL __fcntl_nocancel
#define CLOSE_SYSCALL __close_nocancel
#endif
#endif
#ifdef VARIANT_CANCELABLE
int
open(const char *path, int oflag, ...)
#else
int
open$NOCANCEL(const char *path, int oflag, ...)
#endif
{
int opened_fd = 0;
mode_t mode = 0;
if (oflag & O_CREAT) {
va_list ap;
va_start(ap, oflag);
mode = va_arg(ap, int);
va_end(ap);
}
opened_fd = OPEN_SYSCALL(path, oflag, mode);
#if !TARGET_OS_OSX
return opened_fd;
#else
if (opened_fd < 0) {
return opened_fd;
}
if (system_version_compat_check_path_suffix == NULL) {
return opened_fd;
}
if (!system_version_compat_check_path_suffix(path)) {
return opened_fd;
}
return system_version_compat_open_shim(opened_fd, -1, path, oflag, mode, CLOSE_SYSCALL, OPEN_SYSCALL,
NULL, FCNTL_SYSCALL);
#endif
}
#ifdef VARIANT_CANCELABLE
int
openat(int fd, const char *path, int oflag, ...)
#else
int
openat$NOCANCEL(int fd, const char *path, int oflag, ...)
#endif
{
int opened_fd = 0;
mode_t mode = 0;
if (oflag & O_CREAT) {
va_list ap;
va_start(ap, oflag);
mode = va_arg(ap, int);
va_end(ap);
}
opened_fd = OPENAT_SYSCALL(fd, path, oflag, mode);
#if !TARGET_OS_OSX
return opened_fd;
#else
if (opened_fd < 0) {
return opened_fd;
}
if (system_version_compat_check_path_suffix == NULL) {
return opened_fd;
}
if (!system_version_compat_check_path_suffix(path)) {
return opened_fd;
}
return system_version_compat_open_shim(opened_fd, fd, path, oflag, mode, CLOSE_SYSCALL, NULL,
OPENAT_SYSCALL, FCNTL_SYSCALL);
#endif
}
#endif