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| Current File : //usr/src/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h |
/*
* 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
*/
#ifndef _SYS_ZFS_CONTEXT_H
#define _SYS_ZFS_CONTEXT_H
#ifdef __cplusplus
extern "C" {
#endif
#define _SYS_MUTEX_H
#define _SYS_RWLOCK_H
#define _SYS_CONDVAR_H
#define _SYS_SYSTM_H
#define _SYS_DEBUG_H
#define _SYS_T_LOCK_H
#define _SYS_VNODE_H
#define _SYS_VFS_H
#define _SYS_SUNDDI_H
#define _SYS_CALLB_H
#define _SYS_SCHED_H_
#include <solaris.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 <thread.h>
#include <assert.h>
#include <limits.h>
#include <dirent.h>
#include <time.h>
#include <math.h>
#include <umem.h>
#include <inttypes.h>
#include <fsshare.h>
#include <sys/note.h>
#include <sys/types.h>
#include <sys/cred.h>
#include <sys/atomic.h>
#include <sys/sysmacros.h>
#include <sys/bitmap.h>
#include <sys/resource.h>
#include <sys/byteorder.h>
#include <sys/list.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/mntent.h>
#include <sys/mnttab.h>
#include <sys/zfs_debug.h>
#include <sys/debug.h>
#include <sys/sdt.h>
#include <sys/kstat.h>
#include <sys/u8_textprep.h>
#include <sys/kernel.h>
#include <sys/disk.h>
#include <sys/sysevent.h>
#include <sys/sysevent/eventdefs.h>
#include <sys/sysevent/dev.h>
#include <machine/atomic.h>
#define ZFS_EXPORTS_PATH "/etc/zfs/exports"
/*
* 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
*/
#define ZFS_LOG(...) do { } while (0)
typedef u_longlong_t rlim64_t;
#define RLIM64_INFINITY ((rlim64_t)-3)
#ifdef ZFS_DEBUG
extern void dprintf_setup(int *argc, char **argv);
#endif /* ZFS_DEBUG */
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;
/* This definition is copied from assert.h. */
#if defined(__STDC__)
#if __STDC_VERSION__ - 0 >= 199901L
#define zverify(EX) (void)((EX) || (aok) || \
(__assert(#EX, __FILE__, __LINE__), 0))
#else
#define zverify(EX) (void)((EX) || (aok) || \
(__assert(#EX, __FILE__, __LINE__), 0))
#endif /* __STDC_VERSION__ - 0 >= 199901L */
#else
#define zverify(EX) (void)((EX) || (aok) || \
(_assert("EX", __FILE__, __LINE__), 0))
#endif /* __STDC__ */
#define VERIFY zverify
#define ASSERT zverify
#undef assert
#define assert zverify
extern void __assert(const char *, const char *, int);
#ifdef lint
#define VERIFY3_IMPL(x, y, z, t) if (x == z) ((void)0)
#else
/* BEGIN CSTYLED */
#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
const TYPE __left = (TYPE)(LEFT); \
const TYPE __right = (TYPE)(RIGHT); \
if (!(__left OP __right) && (!aok)) { \
char *__buf = alloca(256); \
(void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \
#LEFT, #OP, #RIGHT, \
(u_longlong_t)__left, #OP, (u_longlong_t)__right); \
__assert(__buf, __FILE__, __LINE__); \
} \
_NOTE(CONSTCOND) } while (0)
/* END CSTYLED */
#endif /* lint */
#define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t)
#define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t)
#define VERIFY3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t)
#ifdef NDEBUG
#define ASSERT3S(x, y, z) ((void)0)
#define ASSERT3U(x, y, z) ((void)0)
#define ASSERT3P(x, y, z) ((void)0)
#else
#define ASSERT3S(x, y, z) VERIFY3S(x, y, z)
#define ASSERT3U(x, y, z) VERIFY3U(x, y, z)
#define ASSERT3P(x, y, z) VERIFY3P(x, y, z)
#endif
/*
* DTrace SDT probes have different signatures in userland than they do in
* kernel. If they're being used in kernel code, re-define them out of
* existence for their counterparts in libzpool.
*/
#ifdef DTRACE_PROBE
#undef DTRACE_PROBE
#define DTRACE_PROBE(a) ((void)0)
#endif /* DTRACE_PROBE */
#ifdef DTRACE_PROBE1
#undef DTRACE_PROBE1
#define DTRACE_PROBE1(a, b, c) ((void)0)
#endif /* DTRACE_PROBE1 */
#ifdef DTRACE_PROBE2
#undef DTRACE_PROBE2
#define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
#endif /* DTRACE_PROBE2 */
#ifdef DTRACE_PROBE3
#undef DTRACE_PROBE3
#define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
#endif /* DTRACE_PROBE3 */
#ifdef DTRACE_PROBE4
#undef DTRACE_PROBE4
#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
#endif /* DTRACE_PROBE4 */
/*
* Threads
*/
#define curthread ((void *)(uintptr_t)thr_self())
typedef struct kthread kthread_t;
#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
zk_thread_create(func, arg)
#define thread_exit() thr_exit(NULL)
#define thread_join(t) panic("libzpool cannot join threads")
#define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
/* in libzpool, p0 exists only to have its address taken */
struct proc {
uintptr_t this_is_never_used_dont_dereference_it;
};
extern struct proc p0;
#define curproc (&p0)
#define PS_NONE -1
extern kthread_t *zk_thread_create(void (*func)(), void *arg);
#define issig(why) (FALSE)
#define ISSIG(thr, why) (FALSE)
/*
* Mutexes
*/
typedef struct kmutex {
void *m_owner;
boolean_t initialized;
mutex_t m_lock;
} kmutex_t;
#define MUTEX_DEFAULT USYNC_THREAD
#undef MUTEX_HELD
#undef MUTEX_NOT_HELD
#define MUTEX_HELD(m) ((m)->m_owner == curthread)
#define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
#define _mutex_held(m) pthread_mutex_isowned_np(m)
/*
* Argh -- we have to get cheesy here because the kernel and userland
* have different signatures for the same routine.
*/
//extern int _mutex_init(mutex_t *mp, int type, void *arg);
//extern int _mutex_destroy(mutex_t *mp);
//extern int _mutex_owned(mutex_t *mp);
#define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp))
#define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp))
#define mutex_owned(mp) zmutex_owned((kmutex_t *)(mp))
extern void zmutex_init(kmutex_t *mp);
extern void zmutex_destroy(kmutex_t *mp);
extern int zmutex_owned(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);
/*
* RW locks
*/
typedef struct krwlock {
int rw_count;
void *rw_owner;
boolean_t initialized;
rwlock_t rw_lock;
} krwlock_t;
typedef int krw_t;
#define RW_READER 0
#define RW_WRITER 1
#define RW_DEFAULT USYNC_THREAD
#undef RW_READ_HELD
#define RW_READ_HELD(x) ((x)->rw_owner == NULL && (x)->rw_count > 0)
#undef RW_WRITE_HELD
#define RW_WRITE_HELD(x) ((x)->rw_owner == curthread)
#define RW_LOCK_HELD(x) rw_lock_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);
extern int rw_lock_held(krwlock_t *rwlp);
#define rw_downgrade(rwlp) do { } while (0)
extern uid_t crgetuid(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
*/
typedef cond_t kcondvar_t;
#define CV_DEFAULT USYNC_THREAD
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 void cv_signal(kcondvar_t *cv);
extern void cv_broadcast(kcondvar_t *cv);
/*
* Kernel memory
*/
#define KM_SLEEP UMEM_NOFAIL
#define KM_PUSHPAGE KM_SLEEP
#define KM_NOSLEEP UMEM_DEFAULT
#define KM_NODEBUG 0
#define KMC_NODEBUG UMC_NODEBUG
#define KMC_NOTOUCH 0 /* not needed for userland caches */
#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 kmem_size() (physmem * PAGESIZE)
#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) /* nothing */
#define kmem_cache_set_move(_c, _cb) /* nothing */
#define POINTER_INVALIDATE(_pp) /* nothing */
#define POINTER_IS_VALID(_p) 0
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
*/
typedef struct taskq taskq_t;
typedef uintptr_t taskqid_t;
typedef void (task_func_t)(void *);
#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 void taskq_destroy(taskq_t *);
extern void taskq_wait(taskq_t *);
extern int taskq_member(taskq_t *, void *);
extern void system_taskq_init(void);
extern void system_taskq_fini(void);
#define taskq_dispatch_safe(tq, func, arg, flags, task) \
taskq_dispatch((tq), (func), (arg), (flags))
#define XVA_MAPSIZE 3
#define XVA_MAGIC 0x78766174
/*
* vnodes
*/
typedef struct vnode {
uint64_t v_size;
int v_fd;
char *v_path;
} vnode_t;
#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) 0
#define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
#define VOP_GETATTR(vp, vap, cr) fop_getattr((vp), (vap));
#define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
#define VN_RELE(vp) vn_close(vp, 0, NULL, NULL)
#define VN_RELE_ASYNC(vp, taskq) vn_close(vp, 0, NULL, NULL)
#define vn_lock(vp, type)
#define VOP_UNLOCK(vp, type)
#ifdef VFS_LOCK_GIANT
#undef VFS_LOCK_GIANT
#endif
#define VFS_LOCK_GIANT(mp) 0
#ifdef VFS_UNLOCK_GIANT
#undef VFS_UNLOCK_GIANT
#endif
#define VFS_UNLOCK_GIANT(vfslocked)
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, int openflag, cred_t *cr, kthread_t *td);
#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 */
#define FTRUNC O_TRUNC
/*
* 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 (thr_self() & (max_ncpus - 1))
#define kcred NULL
#define CRED() NULL
#ifndef ptob
#define ptob(x) ((x) * PAGESIZE)
#endif
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 struct utsname utsname;
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);
/* Random compatibility stuff. */
#define lbolt (gethrtime() >> 23)
#define lbolt64 (gethrtime() >> 23)
extern uint64_t physmem;
#define gethrestime_sec() time(NULL)
#define pwrite64(d, p, n, o) pwrite(d, p, n, o)
#define readdir64(d) readdir(d)
#define SIGPENDING(td) (0)
#define root_mount_wait() do { } while (0)
#define root_mounted() (1)
struct file {
void *dummy;
};
#define FCREAT O_CREAT
#define FOFFMAX 0x0
/* 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 *);
typedef uint32_t idmap_rid_t;
#define DDI_SLEEP KM_SLEEP
#define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) (0)
#define SX_SYSINIT(name, lock, desc)
#define SYSCTL_DECL(...)
#define SYSCTL_NODE(...)
#define SYSCTL_INT(...)
#define SYSCTL_UINT(...)
#define SYSCTL_ULONG(...)
#define SYSCTL_QUAD(...)
#define SYSCTL_UQUAD(...)
#ifdef TUNABLE_INT
#undef TUNABLE_INT
#undef TUNABLE_ULONG
#undef TUNABLE_QUAD
#endif
#define TUNABLE_INT(...)
#define TUNABLE_ULONG(...)
#define TUNABLE_QUAD(...)
/* Errors */
#ifndef ERESTART
#define ERESTART (-1)
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SYS_ZFS_CONTEXT_H */