+ssize_t failtest_pread(int fd, void *buf, size_t count, off_t offset,
+ const char *file, unsigned line);
+ssize_t failtest_pwrite(int fd, const void *buf, size_t count, off_t offset,
+ const char *file, unsigned line);
+void *failtest_mmap(void *addr, size_t length, int prot, int flags,
+ int fd, off_t offset, const char *file, unsigned line);
+void *failtest_mmap_noloc(void *addr, size_t length, int prot, int flags,
+ int fd, off_t offset);
+off_t failtest_lseek(int fd, off_t offset, int whence,
+ const char *file, unsigned line);
+int failtest_close(int fd, const char *file, unsigned line);
+int failtest_fcntl(int fd, const char *file, unsigned line, int cmd, ...);
+pid_t failtest_getpid(const char *file, unsigned line);