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zfs/include/sys/zfs_context.h

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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
* Copyright (c) 2012, 2015 by Delphix. All rights reserved.
*/
#ifndef _SYS_ZFS_CONTEXT_H
#define _SYS_ZFS_CONTEXT_H
#ifdef __KERNEL__
#include <sys/note.h>
#include <sys/types.h>
#include <sys/t_lock.h>
#include <sys/atomic.h>
#include <sys/sysmacros.h>
#include <sys/bitmap.h>
#include <sys/cmn_err.h>
#include <sys/kmem.h>
#include <sys/kmem_cache.h>
#include <sys/vmem.h>
#include <sys/taskq.h>
#include <sys/buf.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/cpuvar.h>
#include <sys/kobj.h>
#include <sys/conf.h>
#include <sys/disp.h>
#include <sys/debug.h>
#include <sys/random.h>
#include <sys/byteorder.h>
#include <sys/systm.h>
#include <sys/list.h>
#include <sys/uio_impl.h>
#include <sys/dirent.h>
#include <sys/time.h>
#include <vm/seg_kmem.h>
#include <sys/zone.h>
#include <sys/sdt.h>
#include <sys/kstat.h>
#include <sys/zfs_debug.h>
#include <sys/sysevent.h>
#include <sys/sysevent/eventdefs.h>
#include <sys/zfs_delay.h>
#include <sys/sunddi.h>
#include <sys/ctype.h>
#include <sys/disp.h>
#include <sys/trace.h>
#include <linux/dcache_compat.h>
#include <linux/utsname_compat.h>
#else /* _KERNEL */
#define _SYS_MUTEX_H
#define _SYS_RWLOCK_H
#define _SYS_CONDVAR_H
#define _SYS_SYSTM_H
#define _SYS_T_LOCK_H
#define _SYS_VNODE_H
#define _SYS_VFS_H
#define _SYS_SUNDDI_H
#define _SYS_CALLB_H
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdarg.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <strings.h>
#include <pthread.h>
#include <synch.h>
#include <assert.h>
#include <alloca.h>
#include <umem.h>
#include <limits.h>
#include <atomic.h>
#include <dirent.h>
#include <time.h>
#include <ctype.h>
#include <signal.h>
#include <sys/mman.h>
#include <sys/note.h>
#include <sys/types.h>
#include <sys/cred.h>
#include <sys/sysmacros.h>
#include <sys/bitmap.h>
#include <sys/resource.h>
#include <sys/byteorder.h>
#include <sys/list.h>
#include <sys/uio.h>
#include <sys/zfs_debug.h>
#include <sys/sdt.h>
#include <sys/kstat.h>
#include <sys/u8_textprep.h>
#include <sys/sysevent.h>
#include <sys/sysevent/eventdefs.h>
#include <sys/sunddi.h>
#include <sys/debug.h>
#include <sys/utsname.h>
/*
* Stack
*/
#define noinline __attribute__((noinline))
#define likely(x) __builtin_expect((x), 1)
/*
* Debugging
*/
/*
* Note that we are not using the debugging levels.
*/
#define CE_CONT 0 /* continuation */
#define CE_NOTE 1 /* notice */
#define CE_WARN 2 /* warning */
#define CE_PANIC 3 /* panic */
#define CE_IGNORE 4 /* print nothing */
/*
* ZFS debugging
*/
extern void dprintf_setup(int *argc, char **argv);
extern void cmn_err(int, const char *, ...);
extern void vcmn_err(int, const char *, va_list);
extern void panic(const char *, ...);
extern void vpanic(const char *, va_list);
#define fm_panic panic
extern int aok;
/*
* DTrace SDT probes have different signatures in userland than they do in
* the kernel. If they're being used in kernel code, re-define them out of
* existence for their counterparts in libzpool.
*
* Here's an example of how to use the set-error probes in userland:
* zfs$target:::set-error /arg0 == EBUSY/ {stack();}
*
* Here's an example of how to use DTRACE_PROBE probes in userland:
* If there is a probe declared as follows:
* DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn);
* Then you can use it as follows:
* zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/
* {printf("%u %p\n", arg1, arg2);}
*/
#ifdef DTRACE_PROBE
#undef DTRACE_PROBE
#endif /* DTRACE_PROBE */
#define DTRACE_PROBE(a) \
ZFS_PROBE0(#a)
#ifdef DTRACE_PROBE1
#undef DTRACE_PROBE1
#endif /* DTRACE_PROBE1 */
#define DTRACE_PROBE1(a, b, c) \
ZFS_PROBE1(#a, (unsigned long)c)
#ifdef DTRACE_PROBE2
#undef DTRACE_PROBE2
#endif /* DTRACE_PROBE2 */
#define DTRACE_PROBE2(a, b, c, d, e) \
ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e)
#ifdef DTRACE_PROBE3
#undef DTRACE_PROBE3
#endif /* DTRACE_PROBE3 */
#define DTRACE_PROBE3(a, b, c, d, e, f, g) \
ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g)
#ifdef DTRACE_PROBE4
#undef DTRACE_PROBE4
#endif /* DTRACE_PROBE4 */
#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \
ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \
(unsigned long)i)
/*
* We use the comma operator so that this macro can be used without much
* additional code. For example, "return (EINVAL);" becomes
* "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated
* twice, so it should not have side effects (e.g. something like:
* "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
*/
#define SET_ERROR(err) (ZFS_SET_ERROR(err), err)
/*
* Threads. TS_STACK_MIN is dictated by the minimum allowed pthread stack
* size. While TS_STACK_MAX is somewhat arbitrary, it was selected to be
* large enough for the expected stack depth while small enough to avoid
* exhausting address space with high thread counts.
*/
#define TS_MAGIC 0x72f158ab4261e538ull
#define TS_RUN 0x00000002
#define TS_STACK_MIN MAX(PTHREAD_STACK_MIN, 32768)
#define TS_STACK_MAX (256 * 1024)
/* in libzpool, p0 exists only to have its address taken */
typedef struct proc {
uintptr_t this_is_never_used_dont_dereference_it;
} proc_t;
extern struct proc p0;
#define curproc (&p0)
typedef void (*thread_func_t)(void *);
typedef void (*thread_func_arg_t)(void *);
typedef pthread_t kt_did_t;
#define kpreempt(x) ((void)0)
typedef struct kthread {
kt_did_t t_tid;
thread_func_t t_func;
void * t_arg;
pri_t t_pri;
} kthread_t;
#define curthread zk_thread_current()
#define getcomm() "unknown"
#define thread_exit zk_thread_exit
#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
zk_thread_create(stk, stksize, (thread_func_t)func, arg, \
len, NULL, state, pri, PTHREAD_CREATE_DETACHED)
#define thread_join(t) zk_thread_join(t)
#define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
extern kthread_t *zk_thread_current(void);
extern void zk_thread_exit(void);
extern kthread_t *zk_thread_create(caddr_t stk, size_t stksize,
thread_func_t func, void *arg, size_t len,
proc_t *pp, int state, pri_t pri, int detachstate);
extern void zk_thread_join(kt_did_t tid);
#define kpreempt_disable() ((void)0)
#define kpreempt_enable() ((void)0)
#define PS_NONE -1
#define issig(why) (FALSE)
#define ISSIG(thr, why) (FALSE)
/*
* Mutexes
*/
#define MTX_MAGIC 0x9522f51362a6e326ull
#define MTX_INIT ((void *)NULL)
#define MTX_DEST ((void *)-1UL)
typedef struct kmutex {
void *m_owner;
uint64_t m_magic;
pthread_mutex_t m_lock;
} kmutex_t;
#define MUTEX_DEFAULT 0
#define MUTEX_NOLOCKDEP MUTEX_DEFAULT
#define MUTEX_HELD(m) ((m)->m_owner == curthread)
#define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
extern void mutex_destroy(kmutex_t *mp);
extern void mutex_enter(kmutex_t *mp);
extern void mutex_exit(kmutex_t *mp);
extern int mutex_tryenter(kmutex_t *mp);
extern void *mutex_owner(kmutex_t *mp);
extern int mutex_held(kmutex_t *mp);
/*
* RW locks
*/
#define RW_MAGIC 0x4d31fb123648e78aull
#define RW_INIT ((void *)NULL)
#define RW_DEST ((void *)-1UL)
typedef struct krwlock {
void *rw_owner;
void *rw_wr_owner;
uint64_t rw_magic;
pthread_rwlock_t rw_lock;
uint_t rw_readers;
} krwlock_t;
typedef int krw_t;
#define RW_READER 0
#define RW_WRITER 1
#define RW_DEFAULT RW_READER
#define RW_NOLOCKDEP RW_READER
#define RW_READ_HELD(x) ((x)->rw_readers > 0)
#define RW_WRITE_HELD(x) ((x)->rw_wr_owner == curthread)
#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
#undef RW_LOCK_HELD
#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
#undef RW_LOCK_HELD
#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
extern void rw_destroy(krwlock_t *rwlp);
extern void rw_enter(krwlock_t *rwlp, krw_t rw);
extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
extern int rw_tryupgrade(krwlock_t *rwlp);
extern void rw_exit(krwlock_t *rwlp);
#define rw_downgrade(rwlp) do { } while (0)
extern uid_t crgetuid(cred_t *cr);
extern uid_t crgetruid(cred_t *cr);
extern gid_t crgetgid(cred_t *cr);
extern int crgetngroups(cred_t *cr);
extern gid_t *crgetgroups(cred_t *cr);
/*
* Condition variables
*/
#define CV_MAGIC 0xd31ea9a83b1b30c4ull
typedef struct kcondvar {
uint64_t cv_magic;
pthread_cond_t cv;
} kcondvar_t;
#define CV_DEFAULT 0
#define CALLOUT_FLAG_ABSOLUTE 0x2
extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
extern void cv_destroy(kcondvar_t *cv);
extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim,
hrtime_t res, int flag);
extern void cv_signal(kcondvar_t *cv);
extern void cv_broadcast(kcondvar_t *cv);
#define cv_timedwait_sig(cv, mp, at) cv_timedwait(cv, mp, at)
#define cv_wait_sig(cv, mp) cv_wait(cv, mp)
#define cv_wait_io(cv, mp) cv_wait(cv, mp)
#define cv_timedwait_sig_hires(cv, mp, t, r, f) \
cv_timedwait_hires(cv, mp, t, r, f)
/*
* Thread-specific data
*/
#define tsd_get(k) pthread_getspecific(k)
#define tsd_set(k, v) pthread_setspecific(k, v)
#define tsd_create(kp, d) pthread_key_create(kp, d)
#define tsd_destroy(kp) /* nothing */
/*
* Thread-specific data
*/
#define tsd_get(k) pthread_getspecific(k)
#define tsd_set(k, v) pthread_setspecific(k, v)
#define tsd_create(kp, d) pthread_key_create(kp, d)
#define tsd_destroy(kp) /* nothing */
/*
* kstat creation, installation and deletion
*/
extern kstat_t *kstat_create(const char *, int,
const char *, const char *, uchar_t, ulong_t, uchar_t);
extern void kstat_install(kstat_t *);
extern void kstat_delete(kstat_t *);
extern void kstat_waitq_enter(kstat_io_t *);
extern void kstat_waitq_exit(kstat_io_t *);
extern void kstat_runq_enter(kstat_io_t *);
extern void kstat_runq_exit(kstat_io_t *);
extern void kstat_waitq_to_runq(kstat_io_t *);
extern void kstat_runq_back_to_waitq(kstat_io_t *);
extern void kstat_set_raw_ops(kstat_t *ksp,
int (*headers)(char *buf, size_t size),
int (*data)(char *buf, size_t size, void *data),
void *(*addr)(kstat_t *ksp, loff_t index));
/*
* Kernel memory
*/
#define KM_SLEEP UMEM_NOFAIL
#define KM_PUSHPAGE KM_SLEEP
#define KM_NOSLEEP UMEM_DEFAULT
#define KMC_NODEBUG UMC_NODEBUG
#define KMC_KMEM 0x0
#define KMC_VMEM 0x0
#define kmem_alloc(_s, _f) umem_alloc(_s, _f)
#define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
#define kmem_free(_b, _s) umem_free(_b, _s)
#define vmem_alloc(_s, _f) kmem_alloc(_s, _f)
#define vmem_zalloc(_s, _f) kmem_zalloc(_s, _f)
#define vmem_free(_b, _s) kmem_free(_b, _s)
#define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
#define kmem_cache_destroy(_c) umem_cache_destroy(_c)
#define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
#define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
#define kmem_debugging() 0
#define kmem_cache_reap_now(_c) umem_cache_reap_now(_c);
#define kmem_cache_set_move(_c, _cb) /* nothing */
#define vmem_qcache_reap(_v) /* nothing */
#define POINTER_INVALIDATE(_pp) /* nothing */
#define POINTER_IS_VALID(_p) 0
extern vmem_t *zio_arena;
typedef umem_cache_t kmem_cache_t;
typedef enum kmem_cbrc {
KMEM_CBRC_YES,
KMEM_CBRC_NO,
KMEM_CBRC_LATER,
KMEM_CBRC_DONT_NEED,
KMEM_CBRC_DONT_KNOW
} kmem_cbrc_t;
/*
* Task queues
*/
#define TASKQ_NAMELEN 31
typedef uintptr_t taskqid_t;
typedef void (task_func_t)(void *);
typedef struct taskq_ent {
struct taskq_ent *tqent_next;
struct taskq_ent *tqent_prev;
task_func_t *tqent_func;
void *tqent_arg;
uintptr_t tqent_flags;
} taskq_ent_t;
typedef struct taskq {
char tq_name[TASKQ_NAMELEN + 1];
kmutex_t tq_lock;
krwlock_t tq_threadlock;
kcondvar_t tq_dispatch_cv;
kcondvar_t tq_wait_cv;
kthread_t **tq_threadlist;
int tq_flags;
int tq_active;
int tq_nthreads;
int tq_nalloc;
int tq_minalloc;
int tq_maxalloc;
kcondvar_t tq_maxalloc_cv;
int tq_maxalloc_wait;
taskq_ent_t *tq_freelist;
taskq_ent_t tq_task;
} taskq_t;
#define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */
#define TASKQ_PREPOPULATE 0x0001
#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
#define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
#define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
#define TQ_SLEEP KM_SLEEP /* Can block for memory */
#define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
#define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
#define TQ_FRONT 0x08 /* Queue in front */
extern taskq_t *system_taskq;
extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
#define taskq_create_proc(a, b, c, d, e, p, f) \
(taskq_create(a, b, c, d, e, f))
#define taskq_create_sysdc(a, b, d, e, p, dc, f) \
(taskq_create(a, b, maxclsyspri, d, e, f))
extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
extern taskqid_t taskq_dispatch_delay(taskq_t *, task_func_t, void *, uint_t,
clock_t);
extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
taskq_ent_t *);
extern int taskq_empty_ent(taskq_ent_t *);
extern void taskq_init_ent(taskq_ent_t *);
extern void taskq_destroy(taskq_t *);
extern void taskq_wait(taskq_t *);
extern void taskq_wait_id(taskq_t *, taskqid_t);
extern void taskq_wait_outstanding(taskq_t *, taskqid_t);
extern int taskq_member(taskq_t *, kthread_t *);
extern int taskq_cancel_id(taskq_t *, taskqid_t);
extern void system_taskq_init(void);
extern void system_taskq_fini(void);
#define XVA_MAPSIZE 3
#define XVA_MAGIC 0x78766174
/*
* vnodes
*/
typedef struct vnode {
uint64_t v_size;
int v_fd;
char *v_path;
int v_dump_fd;
} vnode_t;
extern char *vn_dumpdir;
#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
typedef struct xoptattr {
timestruc_t xoa_createtime; /* Create time of file */
uint8_t xoa_archive;
uint8_t xoa_system;
uint8_t xoa_readonly;
uint8_t xoa_hidden;
uint8_t xoa_nounlink;
uint8_t xoa_immutable;
uint8_t xoa_appendonly;
uint8_t xoa_nodump;
uint8_t xoa_settable;
uint8_t xoa_opaque;
uint8_t xoa_av_quarantined;
uint8_t xoa_av_modified;
uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
uint8_t xoa_reparse;
uint8_t xoa_offline;
uint8_t xoa_sparse;
} xoptattr_t;
typedef struct vattr {
uint_t va_mask; /* bit-mask of attributes */
u_offset_t va_size; /* file size in bytes */
} vattr_t;
typedef struct xvattr {
vattr_t xva_vattr; /* Embedded vattr structure */
uint32_t xva_magic; /* Magic Number */
uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
xoptattr_t xva_xoptattrs; /* Optional attributes */
} xvattr_t;
typedef struct vsecattr {
uint_t vsa_mask; /* See below */
int vsa_aclcnt; /* ACL entry count */
void *vsa_aclentp; /* pointer to ACL entries */
int vsa_dfaclcnt; /* default ACL entry count */
void *vsa_dfaclentp; /* pointer to default ACL entries */
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) vn_close(vp)
#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 */
#define ddi_time_before(a, b) (a < b)
#define ddi_time_after(a, b) ddi_time_before(b, a)
#define ddi_time_before_eq(a, b) (!ddi_time_after(a, b))
#define ddi_time_after_eq(a, b) ddi_time_before_eq(b, a)
#define ddi_time_before64(a, b) (a < b)
#define ddi_time_after64(a, b) ddi_time_before64(b, a)
#define ddi_time_before_eq64(a, b) (!ddi_time_after64(a, b))
#define ddi_time_after_eq64(a, b) ddi_time_before_eq64(b, a)
extern void delay(clock_t ticks);
#define SEC_TO_TICK(sec) ((sec) * hz)
#define MSEC_TO_TICK(msec) ((msec) / (MILLISEC / hz))
#define USEC_TO_TICK(usec) ((usec) / (MICROSEC / hz))
#define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz))
#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 boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN))
/*
* Process priorities as defined by setpriority(2) and getpriority(2).
*/
#define minclsyspri 19
#define maxclsyspri -20
#define defclsyspri 0
#define CPU_SEQID ((uintptr_t)pthread_self() & (max_ncpus - 1))
#define kcred NULL
#define CRED() NULL
#define ptob(x) ((x) * PAGESIZE)
extern uint64_t physmem;
extern int highbit64(uint64_t i);
extern int lowbit64(uint64_t i);
extern int highbit(ulong_t i);
extern int lowbit(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);
extern void thread_init(void);
extern void thread_fini(void);
extern void random_init(void);
extern void random_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_vasprintf(const char *fmt, va_list adx);
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);
typedef struct utsname utsname_t;
extern utsname_t *utsname(void);
/* 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 int secpolicy_zfs(const 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)
#define zfs_sleep_until(wakeup) \
do { \
hrtime_t delta = wakeup - gethrtime(); \
struct timespec ts; \
ts.tv_sec = delta / NANOSEC; \
ts.tv_nsec = delta % NANOSEC; \
(void) nanosleep(&ts, NULL); \
} while (0)
typedef int fstrans_cookie_t;
extern fstrans_cookie_t spl_fstrans_mark(void);
extern void spl_fstrans_unmark(fstrans_cookie_t);
extern int spl_fstrans_check(void);
#endif /* _KERNEL */
#endif /* _SYS_ZFS_CONTEXT_H */
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