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-rw-r--r--util/os-compatibility.c149
1 files changed, 0 insertions, 149 deletions
diff --git a/util/os-compatibility.c b/util/os-compatibility.c
deleted file mode 100644
index bd39705d..00000000
--- a/util/os-compatibility.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Copyright © 2012 Collabora, Ltd.
- *
- * 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 (including the
- * next paragraph) 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.
- */
-
-#define _POSIX_C_SOURCE 200809L
-#include <errno.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <wlr/config.h>
-#include "util/os-compatibility.h"
-
-int os_fd_set_cloexec(int fd) {
- if (fd == -1) {
- return -1;
- }
-
- long flags = fcntl(fd, F_GETFD);
- if (flags == -1) {
- return -1;
- }
-
- if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1) {
- return -1;
- }
-
- return 0;
-}
-
-int set_cloexec_or_close(int fd) {
- if (os_fd_set_cloexec(fd) != 0) {
- close(fd);
- return -1;
- }
- return fd;
-}
-
-int create_tmpfile_cloexec(char *tmpname) {
- int fd;
- mode_t prev_umask = umask(0066);
-#ifdef HAVE_MKOSTEMP
- fd = mkostemp(tmpname, O_CLOEXEC);
- if (fd >= 0) {
- unlink(tmpname);
- }
-#else
- fd = mkstemp(tmpname);
- if (fd >= 0) {
- fd = set_cloexec_or_close(fd);
- unlink(tmpname);
- }
-#endif
- umask(prev_umask);
-
- return fd;
-}
-
-/*
- * Create a new, unique, anonymous file of the given size, and
- * return the file descriptor for it. The file descriptor is set
- * CLOEXEC. The file is immediately suitable for mmap()'ing
- * the given size at offset zero.
- *
- * The file should not have a permanent backing store like a disk,
- * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
- *
- * The file name is deleted from the file system.
- *
- * The file is suitable for buffer sharing between processes by
- * transmitting the file descriptor over Unix sockets using the
- * SCM_RIGHTS methods.
- *
- * If the C library implements posix_fallocate(), it is used to
- * guarantee that disk space is available for the file at the
- * given size. If disk space is insufficient, errno is set to ENOSPC.
- * If posix_fallocate() is not supported, program may receive
- * SIGBUS on accessing mmap()'ed file contents instead.
- */
-int os_create_anonymous_file(off_t size) {
- static const char template[] = "/wlroots-shared-XXXXXX";
-
- const char *path = getenv("XDG_RUNTIME_DIR");
- if (!path) {
- errno = ENOENT;
- return -1;
- }
-
- char *name = malloc(strlen(path) + sizeof(template));
- if (!name) {
- return -1;
- }
-
- strcpy(name, path);
- strcat(name, template);
-
- int fd = create_tmpfile_cloexec(name);
- free(name);
- if (fd < 0) {
- return -1;
- }
-
-#ifdef WLR_HAS_POSIX_FALLOCATE
- int ret;
- do {
- ret = posix_fallocate(fd, 0, size);
- } while (ret == EINTR);
- if (ret != 0) {
- close(fd);
- errno = ret;
- return -1;
- }
-#else
- int ret;
- do {
- ret = ftruncate(fd, size);
- } while (ret < 0 && errno == EINTR);
- if (ret < 0) {
- close(fd);
- return -1;
- }
-#endif
-
- return fd;
-}