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715f6251 | 1 | /* |
2 | * This file is part of the SPL: Solaris Porting Layer. | |
3 | * | |
4 | * Copyright (c) 2008 Lawrence Livermore National Security, LLC. | |
5 | * Produced at Lawrence Livermore National Laboratory | |
6 | * Written by: | |
7 | * Brian Behlendorf <behlendorf1@llnl.gov>, | |
8 | * Herb Wartens <wartens2@llnl.gov>, | |
9 | * Jim Garlick <garlick@llnl.gov> | |
10 | * UCRL-CODE-235197 | |
11 | * | |
12 | * This is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This is distributed in the hope that it will be useful, but WITHOUT | |
18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
20 | * for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License along | |
23 | * with this program; if not, write to the Free Software Foundation, Inc., | |
24 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
25 | */ | |
26 | ||
14c5326c | 27 | #include <sys/sysmacros.h> |
af828292 | 28 | #include <sys/vmsystm.h> |
29 | #include <sys/vnode.h> | |
c19c06f3 | 30 | #include <sys/kmem.h> |
9ab1ac14 | 31 | #include <sys/mutex.h> |
8d0f1ee9 | 32 | #include <sys/debug.h> |
57d1b188 | 33 | #include <sys/proc.h> |
04a479f7 | 34 | #include <sys/kstat.h> |
691d2bd7 | 35 | #include <sys/utsname.h> |
f23e92fa | 36 | #include <linux/kmod.h> |
f1b59d26 | 37 | |
57d1b188 | 38 | #ifdef DEBUG_SUBSYSTEM |
39 | #undef DEBUG_SUBSYSTEM | |
40 | #endif | |
8d0f1ee9 | 41 | |
57d1b188 | 42 | #define DEBUG_SUBSYSTEM S_GENERIC |
f23e92fa | 43 | |
3561541c | 44 | char spl_version[16] = "SPL v" VERSION; |
45 | ||
937879f1 | 46 | long spl_hostid = 0; |
f23e92fa | 47 | EXPORT_SYMBOL(spl_hostid); |
8d0f1ee9 | 48 | |
937879f1 | 49 | char hw_serial[11] = "<none>"; |
50 | EXPORT_SYMBOL(hw_serial); | |
f1b59d26 | 51 | |
52 | int p0 = 0; | |
53 | EXPORT_SYMBOL(p0); | |
70eadc19 | 54 | |
af828292 | 55 | vmem_t *zio_alloc_arena = NULL; |
56 | EXPORT_SYMBOL(zio_alloc_arena); | |
57 | ||
77b1fe8f | 58 | int |
59 | highbit(unsigned long i) | |
60 | { | |
61 | register int h = 1; | |
57d1b188 | 62 | ENTRY; |
77b1fe8f | 63 | |
64 | if (i == 0) | |
57d1b188 | 65 | RETURN(0); |
77b1fe8f | 66 | #if BITS_PER_LONG == 64 |
67 | if (i & 0xffffffff00000000ul) { | |
68 | h += 32; i >>= 32; | |
69 | } | |
70 | #endif | |
71 | if (i & 0xffff0000) { | |
72 | h += 16; i >>= 16; | |
73 | } | |
74 | if (i & 0xff00) { | |
75 | h += 8; i >>= 8; | |
76 | } | |
77 | if (i & 0xf0) { | |
78 | h += 4; i >>= 4; | |
79 | } | |
80 | if (i & 0xc) { | |
81 | h += 2; i >>= 2; | |
82 | } | |
83 | if (i & 0x2) { | |
84 | h += 1; | |
85 | } | |
57d1b188 | 86 | RETURN(h); |
77b1fe8f | 87 | } |
88 | EXPORT_SYMBOL(highbit); | |
89 | ||
2f5d55aa | 90 | int |
91 | ddi_strtoul(const char *str, char **nptr, int base, unsigned long *result) | |
92 | { | |
93 | char *end; | |
94 | return (*result = simple_strtoul(str, &end, base)); | |
95 | } | |
96 | EXPORT_SYMBOL(ddi_strtoul); | |
97 | ||
691d2bd7 | 98 | struct new_utsname *__utsname(void) |
99 | { | |
100 | return init_utsname(); | |
101 | } | |
102 | EXPORT_SYMBOL(__utsname); | |
103 | ||
8d0f1ee9 | 104 | static int |
57d1b188 | 105 | set_hostid(void) |
8d0f1ee9 | 106 | { |
f23e92fa | 107 | char sh_path[] = "/bin/sh"; |
108 | char *argv[] = { sh_path, | |
109 | "-c", | |
57d86234 | 110 | "/usr/bin/hostid >/proc/sys/kernel/spl/hostid", |
f23e92fa | 111 | NULL }; |
112 | char *envp[] = { "HOME=/", | |
113 | "TERM=linux", | |
114 | "PATH=/sbin:/usr/sbin:/bin:/usr/bin", | |
115 | NULL }; | |
8d0f1ee9 | 116 | |
57d1b188 | 117 | /* Doing address resolution in the kernel is tricky and just |
937879f1 | 118 | * not a good idea in general. So to set the proper 'hw_serial' |
57d1b188 | 119 | * use the usermodehelper support to ask '/bin/sh' to run |
120 | * '/usr/bin/hostid' and redirect the result to /proc/sys/spl/hostid | |
121 | * for us to use. It's a horific solution but it will do for now. | |
122 | */ | |
123 | return call_usermodehelper(sh_path, argv, envp, 1); | |
124 | } | |
8d0f1ee9 | 125 | |
57d1b188 | 126 | static int __init spl_init(void) |
127 | { | |
128 | int rc = 0; | |
f23e92fa | 129 | |
57d1b188 | 130 | if ((rc = debug_init())) |
18c9eadf | 131 | return rc; |
f23e92fa | 132 | |
8d0f1ee9 | 133 | if ((rc = kmem_init())) |
57d1b188 | 134 | GOTO(out , rc); |
8d0f1ee9 | 135 | |
9ab1ac14 | 136 | if ((rc = spl_mutex_init())) |
137 | GOTO(out2 , rc); | |
138 | ||
8d0f1ee9 | 139 | if ((rc = vn_init())) |
9ab1ac14 | 140 | GOTO(out3, rc); |
8d0f1ee9 | 141 | |
57d1b188 | 142 | if ((rc = proc_init())) |
9ab1ac14 | 143 | GOTO(out4, rc); |
af828292 | 144 | |
04a479f7 | 145 | if ((rc = kstat_init())) |
146 | GOTO(out5, rc); | |
147 | ||
57d1b188 | 148 | if ((rc = set_hostid())) |
04a479f7 | 149 | GOTO(out6, rc = -EADDRNOTAVAIL); |
f23e92fa | 150 | |
937879f1 | 151 | printk("SPL: Loaded Solaris Porting Layer v%s\n", VERSION); |
57d1b188 | 152 | RETURN(rc); |
04a479f7 | 153 | out6: |
154 | kstat_fini(); | |
9ab1ac14 | 155 | out5: |
57d1b188 | 156 | proc_fini(); |
9ab1ac14 | 157 | out4: |
57d1b188 | 158 | vn_fini(); |
9ab1ac14 | 159 | out3: |
160 | spl_mutex_fini(); | |
8d0f1ee9 | 161 | out2: |
57d1b188 | 162 | kmem_fini(); |
8d0f1ee9 | 163 | out: |
57d1b188 | 164 | debug_fini(); |
8d0f1ee9 | 165 | |
57d1b188 | 166 | printk("SPL: Failed to Load Solaris Porting Layer v%s, " |
167 | "rc = %d\n", VERSION, rc); | |
18c9eadf | 168 | return rc; |
70eadc19 | 169 | } |
170 | ||
171 | static void spl_fini(void) | |
172 | { | |
57d1b188 | 173 | ENTRY; |
174 | ||
937879f1 | 175 | printk("SPL: Unloaded Solaris Porting Layer v%s\n", VERSION); |
04a479f7 | 176 | kstat_fini(); |
57d1b188 | 177 | proc_fini(); |
af828292 | 178 | vn_fini(); |
e4f1d29f | 179 | kmem_fini(); |
57d1b188 | 180 | debug_fini(); |
70eadc19 | 181 | } |
182 | ||
183 | module_init(spl_init); | |
184 | module_exit(spl_fini); | |
185 | ||
186 | MODULE_AUTHOR("Lawrence Livermore National Labs"); | |
187 | MODULE_DESCRIPTION("Solaris Porting Layer"); | |
188 | MODULE_LICENSE("GPL"); |