99639e4a13
Minimal support added for the zone_get_hostid() function. Only global zones are supported therefore this function must be called with a NULL argumment. Additionally, I've added the HW_HOSTID_LEN define and updated all instances where a hard coded magic value of 11 was used; "A good riddance of bad rubbish!"
342 lines
7.8 KiB
C
342 lines
7.8 KiB
C
/*
|
|
* This file is part of the SPL: Solaris Porting Layer.
|
|
*
|
|
* Copyright (c) 2008 Lawrence Livermore National Security, LLC.
|
|
* Produced at Lawrence Livermore National Laboratory
|
|
* Written by:
|
|
* Brian Behlendorf <behlendorf1@llnl.gov>,
|
|
* Herb Wartens <wartens2@llnl.gov>,
|
|
* Jim Garlick <garlick@llnl.gov>
|
|
* UCRL-CODE-235197
|
|
*
|
|
* This is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include <sys/sysmacros.h>
|
|
#include <sys/systeminfo.h>
|
|
#include <sys/vmsystm.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/kmem.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/taskq.h>
|
|
#include <sys/debug.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/kstat.h>
|
|
#include <sys/utsname.h>
|
|
#include <linux/kmod.h>
|
|
|
|
#ifdef DEBUG_SUBSYSTEM
|
|
#undef DEBUG_SUBSYSTEM
|
|
#endif
|
|
|
|
#define DEBUG_SUBSYSTEM S_GENERIC
|
|
|
|
char spl_version[16] = "SPL v" VERSION;
|
|
|
|
long spl_hostid = 0;
|
|
EXPORT_SYMBOL(spl_hostid);
|
|
|
|
char hw_serial[HW_HOSTID_LEN] = "<none>";
|
|
EXPORT_SYMBOL(hw_serial);
|
|
|
|
int p0 = 0;
|
|
EXPORT_SYMBOL(p0);
|
|
|
|
int
|
|
highbit(unsigned long i)
|
|
{
|
|
register int h = 1;
|
|
ENTRY;
|
|
|
|
if (i == 0)
|
|
RETURN(0);
|
|
#if BITS_PER_LONG == 64
|
|
if (i & 0xffffffff00000000ul) {
|
|
h += 32; i >>= 32;
|
|
}
|
|
#endif
|
|
if (i & 0xffff0000) {
|
|
h += 16; i >>= 16;
|
|
}
|
|
if (i & 0xff00) {
|
|
h += 8; i >>= 8;
|
|
}
|
|
if (i & 0xf0) {
|
|
h += 4; i >>= 4;
|
|
}
|
|
if (i & 0xc) {
|
|
h += 2; i >>= 2;
|
|
}
|
|
if (i & 0x2) {
|
|
h += 1;
|
|
}
|
|
RETURN(h);
|
|
}
|
|
EXPORT_SYMBOL(highbit);
|
|
|
|
/*
|
|
* Implementation of 64 bit division for 32-bit machines.
|
|
*/
|
|
#if BITS_PER_LONG == 32
|
|
uint64_t __udivdi3(uint64_t dividend, uint64_t divisor)
|
|
{
|
|
#ifdef HAVE_DIV64_64
|
|
return div64_64(dividend, divisor);
|
|
#else
|
|
/* Taken from a 2.6.24 kernel. */
|
|
uint32_t high, d;
|
|
|
|
high = divisor >> 32;
|
|
if (high) {
|
|
unsigned int shift = fls(high);
|
|
|
|
d = divisor >> shift;
|
|
dividend >>= shift;
|
|
} else
|
|
d = divisor;
|
|
|
|
do_div(dividend, d);
|
|
|
|
return dividend;
|
|
#endif
|
|
}
|
|
EXPORT_SYMBOL(__udivdi3);
|
|
|
|
/*
|
|
* Implementation of 64 bit modulo for 32-bit machines.
|
|
*/
|
|
uint64_t __umoddi3(uint64_t dividend, uint64_t divisor)
|
|
{
|
|
return dividend - divisor * (dividend / divisor);
|
|
}
|
|
EXPORT_SYMBOL(__umoddi3);
|
|
#endif
|
|
|
|
/* NOTE: The strtoxx behavior is solely based on my reading of the Solaris
|
|
* ddi_strtol(9F) man page. I have not verified the behavior of these
|
|
* functions against their Solaris counterparts. It is possible that I
|
|
* may have misinterpretted the man page or the man page is incorrect.
|
|
*/
|
|
int ddi_strtoul(const char *, char **, int, unsigned long *);
|
|
int ddi_strtol(const char *, char **, int, long *);
|
|
int ddi_strtoull(const char *, char **, int, unsigned long long *);
|
|
int ddi_strtoll(const char *, char **, int, long long *);
|
|
|
|
#define define_ddi_strtoux(type, valtype) \
|
|
int ddi_strtou##type(const char *str, char **endptr, \
|
|
int base, valtype *result) \
|
|
{ \
|
|
valtype last_value, value = 0; \
|
|
char *ptr = (char *)str; \
|
|
int flag = 1, digit; \
|
|
\
|
|
if (strlen(ptr) == 0) \
|
|
return EINVAL; \
|
|
\
|
|
/* Auto-detect base based on prefix */ \
|
|
if (!base) { \
|
|
if (str[0] == '0') { \
|
|
if (tolower(str[1])=='x' && isxdigit(str[2])) { \
|
|
base = 16; /* hex */ \
|
|
ptr += 2; \
|
|
} else if (str[1] >= '0' && str[1] < 8) { \
|
|
base = 8; /* octal */ \
|
|
ptr += 1; \
|
|
} else { \
|
|
return EINVAL; \
|
|
} \
|
|
} else { \
|
|
base = 10; /* decimal */ \
|
|
} \
|
|
} \
|
|
\
|
|
while (1) { \
|
|
if (isdigit(*ptr)) \
|
|
digit = *ptr - '0'; \
|
|
else if (isalpha(*ptr)) \
|
|
digit = tolower(*ptr) - 'a' + 10; \
|
|
else \
|
|
break; \
|
|
\
|
|
if (digit >= base) \
|
|
break; \
|
|
\
|
|
last_value = value; \
|
|
value = value * base + digit; \
|
|
if (last_value > value) /* Overflow */ \
|
|
return ERANGE; \
|
|
\
|
|
flag = 1; \
|
|
ptr++; \
|
|
} \
|
|
\
|
|
if (flag) \
|
|
*result = value; \
|
|
\
|
|
if (endptr) \
|
|
*endptr = (char *)(flag ? ptr : str); \
|
|
\
|
|
return 0; \
|
|
} \
|
|
|
|
#define define_ddi_strtox(type, valtype) \
|
|
int ddi_strto##type(const char *str, char **endptr, \
|
|
int base, valtype *result) \
|
|
{ \
|
|
int rc; \
|
|
\
|
|
if (*str == '-') { \
|
|
rc = ddi_strtou##type(str + 1, endptr, base, result); \
|
|
if (!rc) { \
|
|
if (*endptr == str + 1) \
|
|
*endptr = (char *)str; \
|
|
else \
|
|
*result = -*result; \
|
|
} \
|
|
} else { \
|
|
rc = ddi_strtou##type(str, endptr, base, result); \
|
|
} \
|
|
\
|
|
return rc; \
|
|
}
|
|
|
|
define_ddi_strtoux(l, unsigned long)
|
|
define_ddi_strtox(l, long)
|
|
define_ddi_strtoux(ll, unsigned long long)
|
|
define_ddi_strtox(ll, long long)
|
|
|
|
EXPORT_SYMBOL(ddi_strtoul);
|
|
EXPORT_SYMBOL(ddi_strtol);
|
|
EXPORT_SYMBOL(ddi_strtoll);
|
|
EXPORT_SYMBOL(ddi_strtoull);
|
|
|
|
struct new_utsname *__utsname(void)
|
|
{
|
|
#ifdef HAVE_INIT_UTSNAME
|
|
return init_utsname();
|
|
#else
|
|
return &system_utsname;
|
|
#endif
|
|
}
|
|
EXPORT_SYMBOL(__utsname);
|
|
|
|
static int
|
|
set_hostid(void)
|
|
{
|
|
char sh_path[] = "/bin/sh";
|
|
char *argv[] = { sh_path,
|
|
"-c",
|
|
"/usr/bin/hostid >/proc/sys/kernel/spl/hostid",
|
|
NULL };
|
|
char *envp[] = { "HOME=/",
|
|
"TERM=linux",
|
|
"PATH=/sbin:/usr/sbin:/bin:/usr/bin",
|
|
NULL };
|
|
|
|
/* Doing address resolution in the kernel is tricky and just
|
|
* not a good idea in general. So to set the proper 'hw_serial'
|
|
* use the usermodehelper support to ask '/bin/sh' to run
|
|
* '/usr/bin/hostid' and redirect the result to /proc/sys/spl/hostid
|
|
* for us to use. It's a horific solution but it will do for now.
|
|
*/
|
|
return call_usermodehelper(sh_path, argv, envp, 1);
|
|
}
|
|
|
|
uint32_t
|
|
zone_get_hostid(void *zone)
|
|
{
|
|
unsigned long hostid;
|
|
|
|
/* Only the global zone is supported */
|
|
ASSERT(zone == NULL);
|
|
|
|
if (ddi_strtoul(hw_serial, NULL, HW_HOSTID_LEN-1, &hostid) != 0)
|
|
return HW_INVALID_HOSTID;
|
|
|
|
return (uint32_t)hostid;
|
|
}
|
|
EXPORT_SYMBOL(zone_get_hostid);
|
|
|
|
static int __init spl_init(void)
|
|
{
|
|
int rc = 0;
|
|
|
|
if ((rc = debug_init()))
|
|
return rc;
|
|
|
|
if ((rc = spl_kmem_init()))
|
|
GOTO(out , rc);
|
|
|
|
if ((rc = spl_mutex_init()))
|
|
GOTO(out2 , rc);
|
|
|
|
if ((rc = spl_taskq_init()))
|
|
GOTO(out3, rc);
|
|
|
|
if ((rc = vn_init()))
|
|
GOTO(out4, rc);
|
|
|
|
if ((rc = proc_init()))
|
|
GOTO(out5, rc);
|
|
|
|
if ((rc = kstat_init()))
|
|
GOTO(out6, rc);
|
|
|
|
if ((rc = set_hostid()))
|
|
GOTO(out7, rc = -EADDRNOTAVAIL);
|
|
|
|
printk("SPL: Loaded Solaris Porting Layer v%s\n", VERSION);
|
|
RETURN(rc);
|
|
out7:
|
|
kstat_fini();
|
|
out6:
|
|
proc_fini();
|
|
out5:
|
|
vn_fini();
|
|
out4:
|
|
spl_taskq_fini();
|
|
out3:
|
|
spl_mutex_fini();
|
|
out2:
|
|
spl_kmem_fini();
|
|
out:
|
|
debug_fini();
|
|
|
|
printk("SPL: Failed to Load Solaris Porting Layer v%s, "
|
|
"rc = %d\n", VERSION, rc);
|
|
return rc;
|
|
}
|
|
|
|
static void spl_fini(void)
|
|
{
|
|
ENTRY;
|
|
|
|
printk("SPL: Unloaded Solaris Porting Layer v%s\n", VERSION);
|
|
kstat_fini();
|
|
proc_fini();
|
|
vn_fini();
|
|
spl_taskq_fini();
|
|
spl_mutex_fini();
|
|
spl_kmem_fini();
|
|
debug_fini();
|
|
}
|
|
|
|
module_init(spl_init);
|
|
module_exit(spl_fini);
|
|
|
|
MODULE_AUTHOR("Lawrence Livermore National Labs");
|
|
MODULE_DESCRIPTION("Solaris Porting Layer");
|
|
MODULE_LICENSE("GPL");
|