1*d7847a8dSBrooks Davis /*
2*d7847a8dSBrooks Davis * SPDX-License-Identifier: BSD-2-Clause
3*d7847a8dSBrooks Davis *
4*d7847a8dSBrooks Davis * Copyright (c) 2019 Kyle Evans <kevans@FreeBSD.org>
5*d7847a8dSBrooks Davis *
6*d7847a8dSBrooks Davis * Redistribution and use in source and binary forms, with or without
7*d7847a8dSBrooks Davis * modification, are permitted provided that the following conditions
8*d7847a8dSBrooks Davis * are met:
9*d7847a8dSBrooks Davis * 1. Redistributions of source code must retain the above copyright
10*d7847a8dSBrooks Davis * notice(s), this list of conditions and the following disclaimer as
11*d7847a8dSBrooks Davis * the first lines of this file unmodified other than the possible
12*d7847a8dSBrooks Davis * addition of one or more copyright notices.
13*d7847a8dSBrooks Davis * 2. Redistributions in binary form must reproduce the above copyright
14*d7847a8dSBrooks Davis * notice(s), this list of conditions and the following disclaimer in
15*d7847a8dSBrooks Davis * the documentation and/or other materials provided with the
16*d7847a8dSBrooks Davis * distribution.
17*d7847a8dSBrooks Davis *
18*d7847a8dSBrooks Davis * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
19*d7847a8dSBrooks Davis * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20*d7847a8dSBrooks Davis * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21*d7847a8dSBrooks Davis * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
22*d7847a8dSBrooks Davis * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23*d7847a8dSBrooks Davis * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24*d7847a8dSBrooks Davis * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25*d7847a8dSBrooks Davis * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26*d7847a8dSBrooks Davis * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27*d7847a8dSBrooks Davis * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
28*d7847a8dSBrooks Davis * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29*d7847a8dSBrooks Davis */
30*d7847a8dSBrooks Davis
31*d7847a8dSBrooks Davis #include <sys/param.h>
32*d7847a8dSBrooks Davis #include <sys/filio.h>
33*d7847a8dSBrooks Davis #include <sys/mman.h>
34*d7847a8dSBrooks Davis
35*d7847a8dSBrooks Davis #include <errno.h>
36*d7847a8dSBrooks Davis #include <fcntl.h>
37*d7847a8dSBrooks Davis #include <string.h>
38*d7847a8dSBrooks Davis #include <unistd.h>
39*d7847a8dSBrooks Davis
40*d7847a8dSBrooks Davis #include "libc_private.h"
41*d7847a8dSBrooks Davis
42*d7847a8dSBrooks Davis __weak_reference(shm_open, _shm_open);
43*d7847a8dSBrooks Davis __weak_reference(shm_open, __sys_shm_open);
44*d7847a8dSBrooks Davis
45*d7847a8dSBrooks Davis int
shm_open(const char * path,int flags,mode_t mode)46*d7847a8dSBrooks Davis shm_open(const char *path, int flags, mode_t mode)
47*d7847a8dSBrooks Davis {
48*d7847a8dSBrooks Davis return (__sys_shm_open2(path, flags | O_CLOEXEC, mode, 0, NULL));
49*d7847a8dSBrooks Davis }
50*d7847a8dSBrooks Davis
51*d7847a8dSBrooks Davis int
shm_create_largepage(const char * path,int flags,int psind,int alloc_policy,mode_t mode)52*d7847a8dSBrooks Davis shm_create_largepage(const char *path, int flags, int psind, int alloc_policy,
53*d7847a8dSBrooks Davis mode_t mode)
54*d7847a8dSBrooks Davis {
55*d7847a8dSBrooks Davis struct shm_largepage_conf slc;
56*d7847a8dSBrooks Davis int error, fd, saved_errno;
57*d7847a8dSBrooks Davis
58*d7847a8dSBrooks Davis fd = __sys_shm_open2(path, flags | O_CREAT, mode, SHM_LARGEPAGE, NULL);
59*d7847a8dSBrooks Davis if (fd == -1)
60*d7847a8dSBrooks Davis return (-1);
61*d7847a8dSBrooks Davis
62*d7847a8dSBrooks Davis memset(&slc, 0, sizeof(slc));
63*d7847a8dSBrooks Davis slc.psind = psind;
64*d7847a8dSBrooks Davis slc.alloc_policy = alloc_policy;
65*d7847a8dSBrooks Davis error = ioctl(fd, FIOSSHMLPGCNF, &slc);
66*d7847a8dSBrooks Davis if (error == -1) {
67*d7847a8dSBrooks Davis saved_errno = errno;
68*d7847a8dSBrooks Davis close(fd);
69*d7847a8dSBrooks Davis errno = saved_errno;
70*d7847a8dSBrooks Davis return (-1);
71*d7847a8dSBrooks Davis }
72*d7847a8dSBrooks Davis return (fd);
73*d7847a8dSBrooks Davis }
74