xref: /freebsd/sys/contrib/openzfs/module/os/freebsd/spl/spl_misc.c (revision cfd6422a5217410fbd66f7a7a8a64d9d85e61229)
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/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include <sys/types.h>
31 #include <sys/param.h>
32 #include <sys/jail.h>
33 #include <sys/kernel.h>
34 #include <sys/libkern.h>
35 #include <sys/limits.h>
36 #include <sys/misc.h>
37 #include <sys/sysctl.h>
38 #include <sys/vnode.h>
39 
40 #include <sys/zfs_context.h>
41 
42 static struct opensolaris_utsname hw_utsname = {
43 	.machine = MACHINE
44 };
45 
46 #ifndef KERNEL_STATIC
47 char hw_serial[11] = "0";
48 
49 utsname_t *
50 utsname(void)
51 {
52 	return (&hw_utsname);
53 }
54 #endif
55 
56 static void
57 opensolaris_utsname_init(void *arg)
58 {
59 
60 	hw_utsname.sysname = ostype;
61 	hw_utsname.nodename = prison0.pr_hostname;
62 	hw_utsname.release = osrelease;
63 	snprintf(hw_utsname.version, sizeof (hw_utsname.version),
64 	    "%d", osreldate);
65 }
66 
67 char *
68 kmem_strdup(const char *s)
69 {
70 	char *buf;
71 
72 	buf = kmem_alloc(strlen(s) + 1, KM_SLEEP);
73 	strcpy(buf, s);
74 	return (buf);
75 }
76 
77 int
78 ddi_copyin(const void *from, void *to, size_t len, int flags)
79 {
80 	/* Fake ioctl() issued by kernel, 'from' is a kernel address */
81 	if (flags & FKIOCTL) {
82 		memcpy(to, from, len);
83 		return (0);
84 	}
85 
86 	return (copyin(from, to, len));
87 }
88 
89 int
90 ddi_copyout(const void *from, void *to, size_t len, int flags)
91 {
92 	/* Fake ioctl() issued by kernel, 'from' is a kernel address */
93 	if (flags & FKIOCTL) {
94 		memcpy(to, from, len);
95 		return (0);
96 	}
97 
98 	return (copyout(from, to, len));
99 }
100 
101 int
102 spl_panic(const char *file, const char *func, int line, const char *fmt, ...)
103 {
104 	va_list ap;
105 
106 	va_start(ap, fmt);
107 	vpanic(fmt, ap);
108 	va_end(ap);
109 }
110 
111 
112 SYSINIT(opensolaris_utsname_init, SI_SUB_TUNABLES, SI_ORDER_ANY,
113     opensolaris_utsname_init, NULL);
114