why is this here

poolbuf.h

@@ -1,143 +0,0 @@
-/*
- * poolbuf - https://codeberg.org/sewn/drwl
- *
- * Copyright (c) 2023-2024 sewn <sewn@disroot.org>
- * 
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- * 
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-#include <stddef.h>
-#include <stdint.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <wayland-client.h>
-
-typedef struct {
-    struct wl_buffer *wl_buf;
-    int32_t stride;
-    int32_t size;
-    void *data;
-} PoolBuf;
-
-#if defined(__linux__) || defined(___FreeBSD__)
-#ifdef __linux__
-#include <linux/memfd.h>
-#endif
-#define __POOLBUF_HAS_MEMFD_CREATE
-int memfd_create(const char *, unsigned);
-#else
-static void
-randname(char *buf)
-{
-	struct timespec ts;
-	clock_gettime(CLOCK_REALTIME, &ts);
-	long r = ts.tv_nsec;
-	for (int i = 0; i < 6; ++i) {
-		buf[i] = 'A'+(r&15)+(r&16)*2;
-		r >>= 5;
-	}
-}
-
-static int
-create_shm(void)
-{
-	char name[] = "/poolbuf-XXXXXX";
-	int retries = 100;
-
-	do {
-		randname(name + sizeof(name) - 7);
-		--retries;
-		int fd = shm_open(name, O_RDWR | O_CREAT | O_EXCL, 0600);
-		if (fd >= 0) {
-			shm_unlink(name);
-			return fd;
-		}
-	} while (retries > 0 && errno == EEXIST);
-	return -1;
-}
-#endif
-
-static void
-poolbuf_destroy(PoolBuf *buf)
-{
-	wl_buffer_destroy(buf->wl_buf);
-	munmap(buf->data, buf->size);
-	free(buf);
-}
-
-static void
-poolbuf_buffer_release(void *data, struct wl_buffer *wl_buffer)
-{
-	PoolBuf *buf = data;
-	poolbuf_destroy(buf);
-}
-
-static struct wl_buffer_listener poolbuf_buffer_listener = {
-	.release = poolbuf_buffer_release,
-};
-
-/* Caller must call poolbuf_destroy after finalizing usage if norelease is passed */
-static PoolBuf *
-poolbuf_create(struct wl_shm *shm,
-		int32_t width, int32_t height, int32_t stride, int norelease)
-{
-	int fd;
-	void *data;
-	struct wl_shm_pool *shm_pool;
-	struct wl_buffer *wl_buf;
-	int32_t size = stride * height;
-	PoolBuf *buf;
-
-#ifdef __POOLBUF_HAS_MEMFD_CREATE
-	fd = memfd_create("poolbuf-shm-buffer-pool",
-		MFD_CLOEXEC | MFD_ALLOW_SEALING | MFD_NOEXEC_SEAL);
-#else
-	fd = create_shm();
-#endif
-    if (fd < 0)
-		return NULL;
-
-	if ((ftruncate(fd, size)) < 0) {
-		close(fd);
-		return NULL;
-	}
-
-	data = mmap(NULL, size,
-			PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
-	if (data == MAP_FAILED) {
-		close(fd);
-		return NULL;
-	}
-
-	shm_pool = wl_shm_create_pool(shm, fd, size);
-	wl_buf = wl_shm_pool_create_buffer(shm_pool, 0,
-			width, height, stride, WL_SHM_FORMAT_ARGB8888);
-	wl_shm_pool_destroy(shm_pool);
-	close(fd);
-
-	buf = calloc(1, sizeof(PoolBuf));
-	buf->wl_buf = wl_buf;
-	buf->stride = stride;
-	buf->size = size;
-	buf->data = data;
-	if (!norelease)
-		wl_buffer_add_listener(wl_buf, &poolbuf_buffer_listener, buf);
-	return buf;
-}