150 lines
2.9 KiB
C
150 lines
2.9 KiB
C
#include <sys/sysmacros.h>
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#include <sys/vmsystm.h>
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#include <sys/vnode.h>
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#include <sys/kmem.h>
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#include <sys/mutex.h>
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#include <sys/debug.h>
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#include <sys/proc.h>
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#include <linux/kmod.h>
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#include "config.h"
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#ifdef DEBUG_SUBSYSTEM
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#undef DEBUG_SUBSYSTEM
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#endif
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#define DEBUG_SUBSYSTEM S_GENERIC
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char spl_version[16] = "SPL v" VERSION;
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long spl_hostid = 0;
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EXPORT_SYMBOL(spl_hostid);
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char hw_serial[11] = "<none>";
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EXPORT_SYMBOL(hw_serial);
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int p0 = 0;
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EXPORT_SYMBOL(p0);
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vmem_t *zio_alloc_arena = NULL;
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EXPORT_SYMBOL(zio_alloc_arena);
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int
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highbit(unsigned long i)
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{
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register int h = 1;
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ENTRY;
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if (i == 0)
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RETURN(0);
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#if BITS_PER_LONG == 64
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if (i & 0xffffffff00000000ul) {
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h += 32; i >>= 32;
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}
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#endif
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if (i & 0xffff0000) {
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h += 16; i >>= 16;
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}
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if (i & 0xff00) {
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h += 8; i >>= 8;
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}
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if (i & 0xf0) {
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h += 4; i >>= 4;
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}
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if (i & 0xc) {
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h += 2; i >>= 2;
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}
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if (i & 0x2) {
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h += 1;
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}
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RETURN(h);
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}
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EXPORT_SYMBOL(highbit);
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int
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ddi_strtoul(const char *str, char **nptr, int base, unsigned long *result)
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{
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char *end;
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return (*result = simple_strtoul(str, &end, base));
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}
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EXPORT_SYMBOL(ddi_strtoul);
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static int
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set_hostid(void)
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{
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char sh_path[] = "/bin/sh";
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char *argv[] = { sh_path,
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"-c",
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"/usr/bin/hostid >/proc/sys/spl/hostid",
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NULL };
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char *envp[] = { "HOME=/",
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"TERM=linux",
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"PATH=/sbin:/usr/sbin:/bin:/usr/bin",
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NULL };
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/* Doing address resolution in the kernel is tricky and just
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* not a good idea in general. So to set the proper 'hw_serial'
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* use the usermodehelper support to ask '/bin/sh' to run
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* '/usr/bin/hostid' and redirect the result to /proc/sys/spl/hostid
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* for us to use. It's a horific solution but it will do for now.
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*/
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return call_usermodehelper(sh_path, argv, envp, 1);
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}
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static int __init spl_init(void)
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{
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int rc = 0;
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if ((rc = debug_init()))
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return rc;
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if ((rc = kmem_init()))
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GOTO(out , rc);
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if ((rc = spl_mutex_init()))
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GOTO(out2 , rc);
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if ((rc = vn_init()))
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GOTO(out3, rc);
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if ((rc = proc_init()))
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GOTO(out4, rc);
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if ((rc = set_hostid()))
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GOTO(out5, rc = -EADDRNOTAVAIL);
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printk("SPL: Loaded Solaris Porting Layer v%s\n", VERSION);
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RETURN(rc);
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out5:
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proc_fini();
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out4:
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vn_fini();
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out3:
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spl_mutex_fini();
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out2:
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kmem_fini();
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out:
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debug_fini();
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printk("SPL: Failed to Load Solaris Porting Layer v%s, "
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"rc = %d\n", VERSION, rc);
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return rc;
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}
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static void spl_fini(void)
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{
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ENTRY;
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printk("SPL: Unloaded Solaris Porting Layer v%s\n", VERSION);
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proc_fini();
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vn_fini();
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kmem_fini();
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debug_fini();
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}
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module_init(spl_init);
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module_exit(spl_fini);
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MODULE_AUTHOR("Lawrence Livermore National Labs");
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MODULE_DESCRIPTION("Solaris Porting Layer");
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MODULE_LICENSE("GPL");
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