xref: /freebsd/sys/contrib/openzfs/module/os/freebsd/spl/spl_misc.c (revision 06c3fb2749bda94cb5201f81ffdb8fa6c3161b2e)
1 /*
2  * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/types.h>
28 #include <sys/param.h>
29 #include <sys/jail.h>
30 #include <sys/kernel.h>
31 #include <sys/libkern.h>
32 #include <sys/limits.h>
33 #include <sys/misc.h>
34 #include <sys/sysctl.h>
35 #include <sys/vnode.h>
36 
37 #include <sys/zfs_context.h>
38 
39 static struct opensolaris_utsname hw_utsname = {
40 	.machine = MACHINE
41 };
42 
43 utsname_t *
44 utsname(void)
45 {
46 	return (&hw_utsname);
47 }
48 
49 static void
50 opensolaris_utsname_init(void *arg)
51 {
52 
53 	hw_utsname.sysname = ostype;
54 	hw_utsname.nodename = prison0.pr_hostname;
55 	hw_utsname.release = osrelease;
56 	snprintf(hw_utsname.version, sizeof (hw_utsname.version),
57 	    "%d", osreldate);
58 }
59 
60 char *
61 kmem_strdup(const char *s)
62 {
63 	char *buf;
64 
65 	buf = kmem_alloc(strlen(s) + 1, KM_SLEEP);
66 	strcpy(buf, s);
67 	return (buf);
68 }
69 
70 int
71 ddi_copyin(const void *from, void *to, size_t len, int flags)
72 {
73 	/* Fake ioctl() issued by kernel, 'from' is a kernel address */
74 	if (flags & FKIOCTL) {
75 		memcpy(to, from, len);
76 		return (0);
77 	}
78 
79 	return (copyin(from, to, len));
80 }
81 
82 int
83 ddi_copyout(const void *from, void *to, size_t len, int flags)
84 {
85 	/* Fake ioctl() issued by kernel, 'from' is a kernel address */
86 	if (flags & FKIOCTL) {
87 		memcpy(to, from, len);
88 		return (0);
89 	}
90 
91 	return (copyout(from, to, len));
92 }
93 
94 void
95 spl_panic(const char *file, const char *func, int line, const char *fmt, ...)
96 {
97 	va_list ap;
98 
99 	va_start(ap, fmt);
100 	vpanic(fmt, ap);
101 	va_end(ap);
102 }
103 
104 
105 SYSINIT(opensolaris_utsname_init, SI_SUB_TUNABLES, SI_ORDER_ANY,
106     opensolaris_utsname_init, NULL);
107