1 files changed, 73 insertions, 0 deletions
diff --git a/lib/libc/sys/shm_open.c b/lib/libc/sys/shm_open.c
new file mode 100644
index 000000000000..eb3022c857b1
--- /dev/null
+++ b/lib/libc/sys/shm_open.c
@@ -0,0 +1,73 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2019 Kyle Evans <kevans@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice(s), this list of conditions and the following disclaimer as
+ *    the first lines of this file unmodified other than the possible
+ *    addition of one or more copyright notices.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice(s), this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/filio.h>
+#include <sys/mman.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "libc_private.h"
+
+__weak_reference(shm_open, _shm_open);
+__weak_reference(shm_open, __sys_shm_open);
+
+int
+shm_open(const char *path, int flags, mode_t mode)
+{
+	return (__sys_shm_open2(path, flags | O_CLOEXEC, mode, 0, NULL));
+}
+
+int
+shm_create_largepage(const char *path, int flags, int psind, int alloc_policy,
+    mode_t mode)
+{
+	struct shm_largepage_conf slc;
+	int error, fd, saved_errno;
+
+	fd = __sys_shm_open2(path, flags | O_CREAT, mode, SHM_LARGEPAGE, NULL);
+	if (fd == -1)
+		return (-1);
+
+	memset(&slc, 0, sizeof(slc));
+	slc.psind = psind;
+	slc.alloc_policy = alloc_policy;
+	error = ioctl(fd, FIOSSHMLPGCNF, &slc);
+	if (error == -1) {
+		saved_errno = errno;
+		close(fd);
+		errno = saved_errno;
+		return (-1);
+	}
+	return (fd);
+}