/* /usr/include/fcntl.h */ int fcntl(int fd, int cmd); int open(char *file, int oflag); int open64(char *file, int oflag); int openat(int fd, char *file, int oflag); int openat64(int fd, char *file, int oflag); int creat(char *file, __mode_t mode); int creat64(char *file, __mode_t mode); int lockf(int fd, int cmd, __off_t len); int lockf64(int fd, int cmd, __off64_t len); int posix_fadvise(int fd, __off_t offset, __off_t len, int advise); int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advise); int posix_fallocate(int fd, __off_t offset, __off_t len); int posix_fallocate64(int fd, __off64_t offset, __off64_t len);