642 lines
17 KiB
C
642 lines
17 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#ifndef _SYS_ZFS_CONTEXT_H
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#define _SYS_ZFS_CONTEXT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define _SYS_MUTEX_H
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#define _SYS_RWLOCK_H
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#define _SYS_CONDVAR_H
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#define _SYS_SYSTM_H
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#define _SYS_DEBUG_H
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#define _SYS_T_LOCK_H
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#define _SYS_VNODE_H
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#define _SYS_VFS_H
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#define _SYS_SUNDDI_H
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#define _SYS_CALLB_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <strings.h>
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#include <pthread.h>
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#include <assert.h>
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#include <alloca.h>
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#include <umem.h>
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#include <limits.h>
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#include <atomic.h>
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#include <dirent.h>
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#include <time.h>
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#include <libsysevent.h>
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#include <sys/note.h>
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#include <sys/types.h>
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#include <sys/cred.h>
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#include <sys/sysmacros.h>
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#include <sys/bitmap.h>
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#include <sys/resource.h>
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#include <sys/byteorder.h>
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#include <sys/list.h>
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#include <sys/uio.h>
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#include <sys/zfs_debug.h>
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#include <sys/sdt.h>
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#include <sys/kstat.h>
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#include <sys/u8_textprep.h>
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#include <sys/sysevent/eventdefs.h>
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#include <sys/sysevent/dev.h>
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#include <sys/sunddi.h>
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/*
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* Debugging
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*/
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/*
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* Note that we are not using the debugging levels.
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*/
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#define CE_CONT 0 /* continuation */
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#define CE_NOTE 1 /* notice */
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#define CE_WARN 2 /* warning */
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#define CE_PANIC 3 /* panic */
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#define CE_IGNORE 4 /* print nothing */
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extern int aok;
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/*
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* ZFS debugging
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*/
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#ifdef ZFS_DEBUG
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extern void dprintf_setup(int *argc, char **argv);
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#endif /* ZFS_DEBUG */
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extern void cmn_err(int, const char *, ...);
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extern void vcmn_err(int, const char *, __va_list);
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extern void panic(const char *, ...);
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extern void vpanic(const char *, __va_list);
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#define fm_panic panic
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extern int aok;
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/* This definition is copied from assert.h. */
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#if defined(__STDC__)
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#if __STDC_VERSION__ - 0 >= 199901L
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#define zverify(EX) (void)((EX) || (aok) || \
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(__assert_c99(#EX, __FILE__, __LINE__, __func__), 0))
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#else
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#define zverify(EX) (void)((EX) || (aok) || \
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(__assert(#EX, __FILE__, __LINE__), 0))
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#endif /* __STDC_VERSION__ - 0 >= 199901L */
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#else
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#define zverify(EX) (void)((EX) || (aok) || \
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(_assert("EX", __FILE__, __LINE__), 0))
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#endif /* __STDC__ */
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#define VERIFY zverify
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#define ASSERT zverify
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#undef assert
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#define assert zverify
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extern void __assert(const char *, const char *, int);
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#ifdef lint
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#define VERIFY3_IMPL(x, y, z, t) if (x == z) ((void)0)
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#else
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/* BEGIN CSTYLED */
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#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
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const TYPE __left = (TYPE)(LEFT); \
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const TYPE __right = (TYPE)(RIGHT); \
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if (!(__left OP __right) && (!aok)) { \
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char *__buf = alloca(256); \
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(void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \
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#LEFT, #OP, #RIGHT, \
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(u_longlong_t)__left, #OP, (u_longlong_t)__right); \
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__assert(__buf, __FILE__, __LINE__); \
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} \
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_NOTE(CONSTCOND) } while (0)
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/* END CSTYLED */
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#endif /* lint */
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#define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t)
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#define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t)
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#define VERIFY3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t)
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#ifdef NDEBUG
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#define ASSERT3S(x, y, z) ((void)0)
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#define ASSERT3U(x, y, z) ((void)0)
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#define ASSERT3P(x, y, z) ((void)0)
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#else
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#define ASSERT3S(x, y, z) VERIFY3S(x, y, z)
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#define ASSERT3U(x, y, z) VERIFY3U(x, y, z)
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#define ASSERT3P(x, y, z) VERIFY3P(x, y, z)
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#endif
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/*
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* DTrace SDT probes have different signatures in userland than they do in
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* kernel. If they're being used in kernel code, re-define them out of
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* existence for their counterparts in libzpool.
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*/
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#ifdef DTRACE_PROBE
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#undef DTRACE_PROBE
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#define DTRACE_PROBE(a) ((void)0)
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#endif /* DTRACE_PROBE */
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#ifdef DTRACE_PROBE1
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#undef DTRACE_PROBE1
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#define DTRACE_PROBE1(a, b, c) ((void)0)
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#endif /* DTRACE_PROBE1 */
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#ifdef DTRACE_PROBE2
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#undef DTRACE_PROBE2
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#define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
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#endif /* DTRACE_PROBE2 */
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#ifdef DTRACE_PROBE3
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#undef DTRACE_PROBE3
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#define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
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#endif /* DTRACE_PROBE3 */
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#ifdef DTRACE_PROBE4
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#undef DTRACE_PROBE4
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#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
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#endif /* DTRACE_PROBE4 */
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/*
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* Threads
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*/
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#define TS_MAGIC 0x72f158ab4261e538ull
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#define TS_RUN 0x00000002
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#ifdef __linux__
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#define STACK_SIZE 8192 /* Linux x86 and amd64 */
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#else
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#define STACK_SIZE 24576 /* Solaris */
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#endif
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#ifdef NPTL_GUARD_WITHIN_STACK
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#define EXTRA_GUARD_BYTES PAGESIZE
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#else
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#define EXTRA_GUARD_BYTES 0
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#endif
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/* in libzpool, p0 exists only to have its address taken */
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typedef struct proc {
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uintptr_t this_is_never_used_dont_dereference_it;
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} proc_t;
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extern struct proc p0;
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typedef void (*thread_func_t)(void *);
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typedef void (*thread_func_arg_t)(void *);
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typedef pthread_t kt_did_t;
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typedef struct kthread {
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kt_did_t t_tid;
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thread_func_t t_func;
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void * t_arg;
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} kthread_t;
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#define tsd_get(key) pthread_getspecific(key)
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#define tsd_set(key, val) pthread_setspecific(key, val)
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#define curthread zk_thread_current()
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#define thread_exit zk_thread_exit
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#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
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zk_thread_create(stk, stksize, (thread_func_t)func, arg, \
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len, NULL, state, pri)
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#define thread_join(t) zk_thread_join(t)
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#define newproc(f,a,cid,pri,ctp,pid) (ENOSYS)
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extern kthread_t *zk_thread_current(void);
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extern void zk_thread_exit(void);
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extern kthread_t *zk_thread_create(caddr_t stk, size_t stksize,
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thread_func_t func, void *arg, size_t len,
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proc_t *pp, int state, pri_t pri);
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extern void zk_thread_join(kt_did_t tid);
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#define PS_NONE -1
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#define issig(why) (FALSE)
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#define ISSIG(thr, why) (FALSE)
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/*
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* Mutexes
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*/
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#define MTX_MAGIC 0x9522f51362a6e326ull
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#define MTX_INIT ((void *)NULL)
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#define MTX_DEST ((void *)-1UL)
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typedef struct kmutex {
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void *m_owner;
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uint64_t m_magic;
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pthread_mutex_t m_lock;
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} kmutex_t;
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#define MUTEX_DEFAULT 0
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#define MUTEX_HELD(m) ((m)->m_owner == curthread)
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#define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
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extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
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extern void mutex_destroy(kmutex_t *mp);
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extern void mutex_enter(kmutex_t *mp);
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extern void mutex_exit(kmutex_t *mp);
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extern int mutex_tryenter(kmutex_t *mp);
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extern void *mutex_owner(kmutex_t *mp);
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extern int mutex_held(kmutex_t *mp);
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/*
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* RW locks
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*/
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#define RW_MAGIC 0x4d31fb123648e78aull
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#define RW_INIT ((void *)NULL)
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#define RW_DEST ((void *)-1UL)
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typedef struct krwlock {
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void *rw_owner;
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void *rw_wr_owner;
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uint64_t rw_magic;
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pthread_rwlock_t rw_lock;
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uint_t rw_readers;
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} krwlock_t;
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typedef int krw_t;
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#define RW_READER 0
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#define RW_WRITER 1
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#define RW_DEFAULT RW_READER
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#define RW_READ_HELD(x) ((x)->rw_readers > 0)
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#define RW_WRITE_HELD(x) ((x)->rw_wr_owner == curthread)
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#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
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extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
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extern void rw_destroy(krwlock_t *rwlp);
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extern void rw_enter(krwlock_t *rwlp, krw_t rw);
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extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
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extern int rw_tryupgrade(krwlock_t *rwlp);
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extern void rw_exit(krwlock_t *rwlp);
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#define rw_downgrade(rwlp) do { } while (0)
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extern uid_t crgetuid(cred_t *cr);
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extern gid_t crgetgid(cred_t *cr);
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extern int crgetngroups(cred_t *cr);
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extern gid_t *crgetgroups(cred_t *cr);
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/*
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* Condition variables
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*/
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#define CV_MAGIC 0xd31ea9a83b1b30c4ull
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typedef struct kcondvar {
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uint64_t cv_magic;
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pthread_cond_t cv;
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} kcondvar_t;
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#define CV_DEFAULT 0
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extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
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extern void cv_destroy(kcondvar_t *cv);
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extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
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extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
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extern void cv_signal(kcondvar_t *cv);
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extern void cv_broadcast(kcondvar_t *cv);
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/*
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* kstat creation, installation and deletion
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*/
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extern kstat_t *kstat_create(char *, int,
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char *, char *, uchar_t, ulong_t, uchar_t);
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extern void kstat_install(kstat_t *);
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extern void kstat_delete(kstat_t *);
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/*
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* Kernel memory
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*/
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#define KM_SLEEP UMEM_NOFAIL
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#define KM_PUSHPAGE KM_SLEEP
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#define KM_NOSLEEP UMEM_DEFAULT
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#define KMC_NODEBUG UMC_NODEBUG
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#define kmem_alloc(_s, _f) umem_alloc(_s, _f)
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#define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
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#define kmem_free(_b, _s) umem_free(_b, _s)
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#define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
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umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
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#define kmem_cache_destroy(_c) umem_cache_destroy(_c)
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#define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
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#define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
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#define kmem_debugging() 0
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#define kmem_cache_reap_now(_c) /* nothing */
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#define kmem_cache_set_move(_c, _cb) /* nothing */
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#define POINTER_INVALIDATE(_pp) /* nothing */
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#define POINTER_IS_VALID(_p) 0
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typedef umem_cache_t kmem_cache_t;
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typedef enum kmem_cbrc {
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KMEM_CBRC_YES,
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KMEM_CBRC_NO,
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KMEM_CBRC_LATER,
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KMEM_CBRC_DONT_NEED,
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KMEM_CBRC_DONT_KNOW
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} kmem_cbrc_t;
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/*
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* Task queues
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*/
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typedef struct taskq taskq_t;
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typedef uintptr_t taskqid_t;
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typedef void (task_func_t)(void *);
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#define TASKQ_PREPOPULATE 0x0001
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#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
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#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
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#define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
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#define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
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#define TQ_SLEEP KM_SLEEP /* Can block for memory */
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#define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
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#define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
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#define TQ_FRONT 0x08 /* Queue in front */
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extern taskq_t *system_taskq;
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extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
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#define taskq_create_proc(a, b, c, d, e, p, f) \
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(taskq_create(a, b, c, d, e, f))
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#define taskq_create_sysdc(a, b, d, e, p, dc, f) \
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(taskq_create(a, b, maxclsyspri, d, e, f))
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extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
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extern void taskq_destroy(taskq_t *);
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extern void taskq_wait(taskq_t *);
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extern int taskq_member(taskq_t *, kthread_t *);
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extern void system_taskq_init(void);
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extern void system_taskq_fini(void);
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#define XVA_MAPSIZE 3
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#define XVA_MAGIC 0x78766174
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/*
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* vnodes
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*/
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typedef struct vnode {
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uint64_t v_size;
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int v_fd;
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char *v_path;
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} vnode_t;
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#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
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typedef struct xoptattr {
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timestruc_t xoa_createtime; /* Create time of file */
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uint8_t xoa_archive;
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uint8_t xoa_system;
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uint8_t xoa_readonly;
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uint8_t xoa_hidden;
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uint8_t xoa_nounlink;
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uint8_t xoa_immutable;
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uint8_t xoa_appendonly;
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uint8_t xoa_nodump;
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uint8_t xoa_settable;
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uint8_t xoa_opaque;
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uint8_t xoa_av_quarantined;
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uint8_t xoa_av_modified;
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uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
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uint8_t xoa_reparse;
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uint8_t xoa_offline;
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uint8_t xoa_sparse;
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} xoptattr_t;
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typedef struct vattr {
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uint_t va_mask; /* bit-mask of attributes */
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u_offset_t va_size; /* file size in bytes */
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} vattr_t;
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typedef struct xvattr {
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vattr_t xva_vattr; /* Embedded vattr structure */
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uint32_t xva_magic; /* Magic Number */
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uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
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uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
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uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
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uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
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xoptattr_t xva_xoptattrs; /* Optional attributes */
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} xvattr_t;
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typedef struct vsecattr {
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uint_t vsa_mask; /* See below */
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int vsa_aclcnt; /* ACL entry count */
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void *vsa_aclentp; /* pointer to ACL entries */
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int vsa_dfaclcnt; /* default ACL entry count */
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void *vsa_dfaclentp; /* pointer to default ACL entries */
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size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
|
|
} vsecattr_t;
|
|
|
|
#define AT_TYPE 0x00001
|
|
#define AT_MODE 0x00002
|
|
#define AT_UID 0x00004
|
|
#define AT_GID 0x00008
|
|
#define AT_FSID 0x00010
|
|
#define AT_NODEID 0x00020
|
|
#define AT_NLINK 0x00040
|
|
#define AT_SIZE 0x00080
|
|
#define AT_ATIME 0x00100
|
|
#define AT_MTIME 0x00200
|
|
#define AT_CTIME 0x00400
|
|
#define AT_RDEV 0x00800
|
|
#define AT_BLKSIZE 0x01000
|
|
#define AT_NBLOCKS 0x02000
|
|
#define AT_SEQ 0x08000
|
|
#define AT_XVATTR 0x10000
|
|
|
|
#define CRCREAT 0
|
|
|
|
extern int fop_getattr(vnode_t *vp, vattr_t *vap);
|
|
|
|
#define VOP_CLOSE(vp, f, c, o, cr, ct) 0
|
|
#define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
|
|
#define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap));
|
|
|
|
#define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
|
|
|
|
#define VN_RELE(vp) vn_close(vp)
|
|
|
|
extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
|
|
int x2, int x3);
|
|
extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
|
|
int x2, int x3, vnode_t *vp, int fd);
|
|
extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
|
|
offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
|
|
extern void vn_close(vnode_t *vp);
|
|
|
|
#define vn_remove(path, x1, x2) remove(path)
|
|
#define vn_rename(from, to, seg) rename((from), (to))
|
|
#define vn_is_readonly(vp) B_FALSE
|
|
|
|
extern vnode_t *rootdir;
|
|
|
|
#include <sys/file.h> /* for FREAD, FWRITE, etc */
|
|
|
|
/*
|
|
* Random stuff
|
|
*/
|
|
#define ddi_get_lbolt() (gethrtime() >> 23)
|
|
#define ddi_get_lbolt64() (gethrtime() >> 23)
|
|
#define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
|
|
|
|
extern void delay(clock_t ticks);
|
|
|
|
#define gethrestime_sec() time(NULL)
|
|
#define gethrestime(t) \
|
|
do {\
|
|
(t)->tv_sec = gethrestime_sec();\
|
|
(t)->tv_nsec = 0;\
|
|
} while (0);
|
|
|
|
#define max_ncpus 64
|
|
|
|
#define minclsyspri 60
|
|
#define maxclsyspri 99
|
|
|
|
#define CPU_SEQID (pthread_self() & (max_ncpus - 1))
|
|
|
|
#define kcred NULL
|
|
#define CRED() NULL
|
|
|
|
#define ptob(x) ((x) * PAGESIZE)
|
|
|
|
extern uint64_t physmem;
|
|
|
|
extern int highbit(ulong_t i);
|
|
extern int random_get_bytes(uint8_t *ptr, size_t len);
|
|
extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
|
|
|
|
extern void kernel_init(int);
|
|
extern void kernel_fini(void);
|
|
|
|
struct spa;
|
|
extern void nicenum(uint64_t num, char *buf);
|
|
extern void show_pool_stats(struct spa *);
|
|
|
|
typedef struct callb_cpr {
|
|
kmutex_t *cc_lockp;
|
|
} callb_cpr_t;
|
|
|
|
#define CALLB_CPR_INIT(cp, lockp, func, name) { \
|
|
(cp)->cc_lockp = lockp; \
|
|
}
|
|
|
|
#define CALLB_CPR_SAFE_BEGIN(cp) { \
|
|
ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
|
|
}
|
|
|
|
#define CALLB_CPR_SAFE_END(cp, lockp) { \
|
|
ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
|
|
}
|
|
|
|
#define CALLB_CPR_EXIT(cp) { \
|
|
ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
|
|
mutex_exit((cp)->cc_lockp); \
|
|
}
|
|
|
|
#define zone_dataset_visible(x, y) (1)
|
|
#define INGLOBALZONE(z) (1)
|
|
|
|
extern char *kmem_asprintf(const char *fmt, ...);
|
|
#define strfree(str) kmem_free((str), strlen(str)+1)
|
|
|
|
/*
|
|
* Hostname information
|
|
*/
|
|
extern char hw_serial[]; /* for userland-emulated hostid access */
|
|
extern int ddi_strtoul(const char *str, char **nptr, int base,
|
|
unsigned long *result);
|
|
|
|
extern int ddi_strtoull(const char *str, char **nptr, int base,
|
|
u_longlong_t *result);
|
|
|
|
/* ZFS Boot Related stuff. */
|
|
|
|
struct _buf {
|
|
intptr_t _fd;
|
|
};
|
|
|
|
struct bootstat {
|
|
uint64_t st_size;
|
|
};
|
|
|
|
typedef struct ace_object {
|
|
uid_t a_who;
|
|
uint32_t a_access_mask;
|
|
uint16_t a_flags;
|
|
uint16_t a_type;
|
|
uint8_t a_obj_type[16];
|
|
uint8_t a_inherit_obj_type[16];
|
|
} ace_object_t;
|
|
|
|
|
|
#define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
|
|
#define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
|
|
#define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
|
|
#define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
|
|
|
|
extern struct _buf *kobj_open_file(char *name);
|
|
extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
|
|
unsigned off);
|
|
extern void kobj_close_file(struct _buf *file);
|
|
extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
|
|
extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
|
|
extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
|
|
cred_t *cr);
|
|
extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
|
|
extern zoneid_t getzoneid(void);
|
|
|
|
/* SID stuff */
|
|
typedef struct ksiddomain {
|
|
uint_t kd_ref;
|
|
uint_t kd_len;
|
|
char *kd_name;
|
|
} ksiddomain_t;
|
|
|
|
ksiddomain_t *ksid_lookupdomain(const char *);
|
|
void ksiddomain_rele(ksiddomain_t *);
|
|
|
|
#define DDI_SLEEP KM_SLEEP
|
|
#define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
|
|
sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_ZFS_CONTEXT_H */
|