* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
- * For details, see <http://github.com/behlendorf/spl/>.
+ * For details, see <http://zfsonlinux.org/>.
*
* The SPL is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
#include <sys/debug.h>
#include <sys/proc.h>
#include <sys/kstat.h>
-#include <sys/utsname.h>
#include <sys/file.h>
#include <linux/kmod.h>
+#include <linux/math64_compat.h>
#include <linux/proc_compat.h>
-#include <spl-debug.h>
-
-#ifdef SS_DEBUG_SUBSYS
-#undef SS_DEBUG_SUBSYS
-#endif
-
-#define SS_DEBUG_SUBSYS SS_GENERIC
char spl_version[32] = "SPL v" SPL_META_VERSION "-" SPL_META_RELEASE;
EXPORT_SYMBOL(spl_version);
-unsigned long spl_hostid = HW_INVALID_HOSTID;
+unsigned long spl_hostid = 0;
EXPORT_SYMBOL(spl_hostid);
module_param(spl_hostid, ulong, 0644);
MODULE_PARM_DESC(spl_hostid, "The system hostid.");
-char hw_serial[HW_HOSTID_LEN] = "<none>";
-EXPORT_SYMBOL(hw_serial);
-
proc_t p0 = { 0 };
EXPORT_SYMBOL(p0);
-#ifndef HAVE_KALLSYMS_LOOKUP_NAME
-DECLARE_WAIT_QUEUE_HEAD(spl_kallsyms_lookup_name_waitq);
-kallsyms_lookup_name_t spl_kallsyms_lookup_name_fn = SYMBOL_POISON;
-#endif
-
-int
-highbit(unsigned long i)
-{
- register int h = 1;
- SENTRY;
-
- if (i == 0)
- SRETURN(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;
- }
- SRETURN(h);
-}
-EXPORT_SYMBOL(highbit);
-
#if BITS_PER_LONG == 32
/*
* Support 64/64 => 64 division on a 32-bit platform. While the kernel
EXPORT_SYMBOL(__put_task_struct);
#endif /* HAVE_PUT_TASK_STRUCT */
-struct new_utsname *__utsname(void)
-{
-#ifdef HAVE_INIT_UTSNAME
- return init_utsname();
-#else
- return &system_utsname;
-#endif
-}
-EXPORT_SYMBOL(__utsname);
-
-
/*
* Read the unique system identifier from the /etc/hostid file.
*
int result;
uint64_t size;
struct _buf *file;
- unsigned long hostid = 0;
+ uint32_t hostid = 0;
file = kobj_open_file(spl_hostid_path);
return 0;
}
-#define GET_HOSTID_CMD \
- "exec 0</dev/null " \
- " 1>/proc/sys/kernel/spl/hostid " \
- " 2>/dev/null; " \
- "hostid"
-
-static int
-hostid_exec(void)
-{
- char *argv[] = { "/bin/sh",
- "-c",
- GET_HOSTID_CMD,
- NULL };
- char *envp[] = { "HOME=/",
- "TERM=linux",
- "PATH=/sbin:/usr/sbin:/bin:/usr/bin",
- NULL };
- int rc;
-
- /* 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 horrific solution but it will do for now.
- */
- rc = call_usermodehelper(argv[0], argv, envp, 1);
- if (rc)
- printk("SPL: Failed user helper '%s %s %s', rc = %d\n",
- argv[0], argv[1], argv[2], rc);
-
- return rc;
-}
-
uint32_t
zone_get_hostid(void *zone)
{
static int first = 1;
- unsigned long hostid;
- int rc;
/* Only the global zone is supported */
ASSERT(zone == NULL);
/*
* Get the hostid if it was not passed as a module parameter.
- * Try reading the /etc/hostid file directly, and then fall
- * back to calling the /usr/bin/hostid utility.
+ * Try reading the /etc/hostid file directly.
*/
- if ((spl_hostid == HW_INVALID_HOSTID) &&
- (rc = hostid_read()) && (rc = hostid_exec()))
- return HW_INVALID_HOSTID;
+ if (hostid_read())
+ spl_hostid = 0;
printk(KERN_NOTICE "SPL: using hostid 0x%08x\n",
(unsigned int) spl_hostid);
}
- if (ddi_strtoul(hw_serial, NULL, HW_HOSTID_LEN-1, &hostid) != 0)
- return HW_INVALID_HOSTID;
-
- return (uint32_t)hostid;
+ return spl_hostid;
}
EXPORT_SYMBOL(zone_get_hostid);
-#ifndef HAVE_KALLSYMS_LOOKUP_NAME
-/*
- * The kallsyms_lookup_name() kernel function is not an exported symbol in
- * Linux 2.6.19 through 2.6.32 inclusive.
- *
- * This function replaces the functionality by performing an upcall to user
- * space where /proc/kallsyms is consulted for the requested address.
- *
- */
-
-#define GET_KALLSYMS_ADDR_CMD \
- "exec 0</dev/null " \
- " 1>/proc/sys/kernel/spl/kallsyms_lookup_name " \
- " 2>/dev/null; " \
- "awk '{ if ( $3 == \"kallsyms_lookup_name\" ) { print $1 } }' " \
- " /proc/kallsyms "
-
-static int
-set_kallsyms_lookup_name(void)
-{
- char *argv[] = { "/bin/sh",
- "-c",
- GET_KALLSYMS_ADDR_CMD,
- NULL };
- char *envp[] = { "HOME=/",
- "TERM=linux",
- "PATH=/sbin:/usr/sbin:/bin:/usr/bin",
- NULL };
- int rc;
-
- rc = call_usermodehelper(argv[0], argv, envp, 1);
-
- /*
- * Due to I/O buffering the helper may return successfully before
- * the proc handler has a chance to execute. To catch this case
- * wait up to 1 second to verify spl_kallsyms_lookup_name_fn was
- * updated to a non SYMBOL_POISON value.
- */
- if (rc == 0) {
- rc = wait_event_timeout(spl_kallsyms_lookup_name_waitq,
- spl_kallsyms_lookup_name_fn != SYMBOL_POISON, HZ);
- if (rc == 0)
- rc = -ETIMEDOUT;
- else if (spl_kallsyms_lookup_name_fn == SYMBOL_POISON)
- rc = -EFAULT;
- else
- rc = 0;
- }
-
- if (rc)
- printk("SPL: Failed user helper '%s %s %s', rc = %d\n",
- argv[0], argv[1], argv[2], rc);
-
- return rc;
-}
-#endif
-
static int
__init spl_init(void)
{
int rc = 0;
- if ((rc = spl_debug_init()))
- return rc;
-
if ((rc = spl_kmem_init()))
- SGOTO(out1, rc);
+ goto out1;
if ((rc = spl_mutex_init()))
- SGOTO(out2, rc);
+ goto out2;
if ((rc = spl_rw_init()))
- SGOTO(out3, rc);
+ goto out3;
if ((rc = spl_taskq_init()))
- SGOTO(out4, rc);
+ goto out4;
if ((rc = spl_vn_init()))
- SGOTO(out5, rc);
+ goto out5;
if ((rc = spl_proc_init()))
- SGOTO(out6, rc);
+ goto out6;
if ((rc = spl_kstat_init()))
- SGOTO(out7, rc);
+ goto out7;
if ((rc = spl_tsd_init()))
- SGOTO(out8, rc);
+ goto out8;
if ((rc = spl_zlib_init()))
- SGOTO(out9, rc);
-
-#ifndef HAVE_KALLSYMS_LOOKUP_NAME
- if ((rc = set_kallsyms_lookup_name()))
- SGOTO(out10, rc = -EADDRNOTAVAIL);
-#endif /* HAVE_KALLSYMS_LOOKUP_NAME */
-
- if ((rc = spl_kmem_init_kallsyms_lookup()))
- SGOTO(out10, rc);
-
- if ((rc = spl_vn_init_kallsyms_lookup()))
- SGOTO(out10, rc);
+ goto out9;
printk(KERN_NOTICE "SPL: Loaded module v%s-%s%s\n", SPL_META_VERSION,
SPL_META_RELEASE, SPL_DEBUG_STR);
- SRETURN(rc);
-out10:
- spl_zlib_fini();
+ return (rc);
+
out9:
spl_tsd_fini();
out8:
out2:
spl_kmem_fini();
out1:
- spl_debug_fini();
-
printk(KERN_NOTICE "SPL: Failed to Load Solaris Porting Layer "
"v%s-%s%s, rc = %d\n", SPL_META_VERSION, SPL_META_RELEASE,
SPL_DEBUG_STR, rc);
+
return rc;
}
static void
spl_fini(void)
{
- SENTRY;
-
printk(KERN_NOTICE "SPL: Unloaded module v%s-%s%s\n",
SPL_META_VERSION, SPL_META_RELEASE, SPL_DEBUG_STR);
spl_zlib_fini();
spl_rw_fini();
spl_mutex_fini();
spl_kmem_fini();
- spl_debug_fini();
}
/* Called when a dependent module is loaded */
module_init(spl_init);
module_exit(spl_fini);
-MODULE_AUTHOR("Lawrence Livermore National Labs");
MODULE_DESCRIPTION("Solaris Porting Layer");
-MODULE_LICENSE("GPL");
+MODULE_AUTHOR(SPL_META_AUTHOR);
+MODULE_LICENSE(SPL_META_LICENSE);
+MODULE_VERSION(SPL_META_VERSION "-" SPL_META_RELEASE);
projects / mirror_spl.git / blobdiff