some new features

.venv/lib/python3.12/site-packages/Cython/Includes/posix/fcntl.pxd

@@ -0,0 +1,86 @@
+# https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/fcntl.h.html
+
+from posix.types cimport mode_t, off_t, pid_t
+
+cdef extern from "<fcntl.h>" nogil:
+
+    enum: F_DUPFD
+    enum: F_DUPFD_CLOEXEC
+    enum: F_GETFD
+    enum: F_SETFD
+    enum: F_GETFL
+    enum: F_SETFL
+    enum: F_GETLK
+    enum: F_SETLK
+    enum: F_SETLKW
+    enum: F_GETOWN
+    enum: F_SETOWN
+
+    enum: FD_CLOEXEC
+
+    enum: F_RDLCK
+    enum: F_UNLCK
+    enum: F_WRLCK
+
+    enum: SEEK_SET
+    enum: SEEK_CUR
+    enum: SEEK_END
+
+    enum: O_CLOEXEC
+    enum: O_CREAT
+    enum: O_DIRECT
+    enum: O_DIRECTORY
+    enum: O_EXCL
+    enum: O_NOCTTY
+    enum: O_TRUNC
+    enum: O_TTY_INIT
+
+    enum: O_APPEND
+    enum: O_DSYNC
+    enum: O_NONBLOCK
+    enum: O_RSYNC
+    enum: O_SYNC
+
+    enum: O_ACCMODE # O_RDONLY|O_WRONLY|O_RDWR
+
+    enum: O_EXEC
+    enum: O_RDONLY
+    enum: O_WRONLY
+    enum: O_RDWR
+    enum: O_SEARCH
+
+    enum: AT_FDCWD
+    enum: AT_EACCESS
+    enum: AT_SYMLINK_NOFOLLOW
+    enum: AT_SYMLINK_FOLLOW
+    enum: AT_REMOVEDIR
+
+    enum: S_IFMT
+    enum: S_IFBLK
+    enum: S_IFCHR
+    enum: S_IFIFO
+    enum: S_IFREG
+    enum: S_IFDIR
+    enum: S_IFLNK
+    enum: S_IFSOCK
+
+    enum: POSIX_FADV_DONTNEED
+    enum: POSIX_FADV_NOREUSE
+    enum: POSIX_FADV_NORMAL
+    enum: POSIX_FADV_RANDOM
+    enum: POSIX_FADV_SEQUENTIAL
+    enum: POSIX_FADV_WILLNEED
+
+    struct flock:
+        short l_type
+        short l_whence
+        off_t l_start
+        off_t l_len
+        pid_t l_pid
+
+    int creat(const char *, mode_t)
+    int fcntl(int, int, ...)
+    int open(const char *, int, ...)
+    int openat(int, const char *, int, ...)
+    int posix_fadvise(int, off_t, off_t, int)
+    int posix_fallocate(int, off_t, off_t)