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daff6b7e35
mirror_zfs/include/sys/zfs_context.h
Rob Norris daff6b7e35 libspl: move utsname() etc to sys/misc.h; initialise in libspl_init() 
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #17861
2025-11-12 10:01:21 -08:00

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// SPDX-License-Identifier: CDDL-1.0
/*
* 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 https://opensource.org/licenses/CDDL-1.0.
* 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 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2012, 2018 by Delphix. 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
/*
* This code compiles in three different contexts. When __KERNEL__ is defined,
* the code uses "unix-like" kernel interfaces. When _STANDALONE is defined, the
* code is running in a reduced capacity environment of the boot loader which is
* generally a subset of both POSIX and kernel interfaces (with a few unique
* interfaces too). When neither are defined, it's in a userland POSIX or
* similar environment.
*/
#if defined(__KERNEL__) || defined(_STANDALONE)
#include <sys/types.h>
#include <sys/atomic.h>
#include <sys/sysmacros.h>
#include <sys/vmsystm.h>
#include <sys/condvar.h>
#include <sys/cmn_err.h>
#include <sys/kmem.h>
#include <sys/kmem_cache.h>
#include <sys/vmem.h>
#include <sys/misc.h>
#include <sys/taskq.h>
#include <sys/param.h>
#include <sys/disp.h>
#include <sys/debug.h>
#include <sys/random.h>
#include <sys/string.h>
#include <sys/byteorder.h>
#include <sys/list.h>
#include <sys/time.h>
#include <sys/zone.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 <sys/procfs_list.h>
#include <sys/mod.h>
#include <sys/uio_impl.h>
#include <sys/zfs_context_os.h>
#else /* _KERNEL || _STANDALONE */
#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 <setjmp.h>
#include <assert.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/types.h>
#include <sys/cred.h>
#include <sys/sysmacros.h>
#include <sys/resource.h>
#include <sys/byteorder.h>
#include <sys/list.h>
#include <sys/mod.h>
#include <sys/uio.h>
#include <sys/zfs_debug.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/trace_zfs.h>
#include <sys/mutex.h>
#include <sys/rwlock.h>
#include <sys/condvar.h>
#include <sys/cmn_err.h>
#include <sys/thread.h>
#include <sys/taskq.h>
#include <sys/tsd.h>
#include <sys/procfs_list.h>
#include <sys/kmem.h>
#include <sys/zfs_delay.h>
#include <sys/vnode.h>
#include <sys/random.h>
#include <sys/callb.h>
#include <sys/trace.h>
#include <sys/systm.h>
#include <sys/misc.h>
#include <sys/zfs_context_os.h>
/*
* Stack
*/
#define noinline __attribute__((noinline))
#define likely(x) __builtin_expect((x), 1)
#define unlikely(x) __builtin_expect((x), 0)
/*
* 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)
#ifdef DTRACE_PROBE1
#undef DTRACE_PROBE1
#endif /* DTRACE_PROBE1 */
#define DTRACE_PROBE1(a, b, c)
#ifdef DTRACE_PROBE2
#undef DTRACE_PROBE2
#endif /* DTRACE_PROBE2 */
#define DTRACE_PROBE2(a, b, c, d, e)
#ifdef DTRACE_PROBE3
#undef DTRACE_PROBE3
#endif /* DTRACE_PROBE3 */
#define DTRACE_PROBE3(a, b, c, d, e, f, g)
#ifdef DTRACE_PROBE4
#undef DTRACE_PROBE4
#endif /* DTRACE_PROBE4 */
#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)
#ifdef __FreeBSD__
typedef off_t loff_t;
#endif
extern char *vn_dumpdir;
/*
* Random stuff
*/
#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 defclsyspri 0
/* Write issue taskq priority. */
#define wtqclsyspri -19
#define maxclsyspri -20
#define CPU_SEQID ((uintptr_t)pthread_self() & (max_ncpus - 1))
#define CPU_SEQID_UNSTABLE CPU_SEQID
#define NN_DIVISOR_1000 (1U << 0)
#define NN_NUMBUF_SZ (6)
extern const char *random_path;
extern const char *urandom_path;
extern int highbit64(uint64_t i);
extern int lowbit64(uint64_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);
static __inline__ uint32_t
random_in_range(uint32_t range)
{
uint32_t r;
ASSERT(range != 0);
if (range == 1)
return (0);
(void) random_get_pseudo_bytes((uint8_t *)&r, sizeof (r));
return (r % range);
}
extern void random_init(void);
extern void random_fini(void);
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 uint32_t zone_get_hostid(void *zonep);
/*
* Hostname information
*/
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;
};
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)
/*
* Kernel modules
*/
#define __init
#define __exit
#endif /* _KERNEL || _STANDALONE */
#ifdef __cplusplus
};
#endif
#endif /* _SYS_ZFS_CONTEXT_H */
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