mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2026-05-23 02:44:41 +03:00
Move the world out of /zfs/ and seperate out module build tree
This commit is contained in:
Brian Behlendorf
@@ -0,0 +1,885 @@
|
||||
/*
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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 2008 Sun Microsystems, Inc. All rights reserved.
|
||||
* Use is subject to license terms.
|
||||
*/
|
||||
|
||||
#include <assert.h>
|
||||
#include <fcntl.h>
|
||||
#include <poll.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <zlib.h>
|
||||
#include <sys/spa.h>
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||||
#include <sys/stat.h>
|
||||
#include <sys/processor.h>
|
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#include <sys/zfs_context.h>
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||||
#include <sys/zmod.h>
|
||||
#include <sys/utsname.h>
|
||||
|
||||
/*
|
||||
* Emulation of kernel services in userland.
|
||||
*/
|
||||
|
||||
uint64_t physmem;
|
||||
vnode_t *rootdir = (vnode_t *)0xabcd1234;
|
||||
char hw_serial[11];
|
||||
|
||||
struct utsname utsname = {
|
||||
"userland", "libzpool", "1", "1", "na"
|
||||
};
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* threads
|
||||
* =========================================================================
|
||||
*/
|
||||
/*ARGSUSED*/
|
||||
kthread_t *
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||||
zk_thread_create(void (*func)(), void *arg)
|
||||
{
|
||||
thread_t tid;
|
||||
|
||||
VERIFY(thr_create(0, 0, (void *(*)(void *))func, arg, THR_DETACHED,
|
||||
&tid) == 0);
|
||||
|
||||
return ((void *)(uintptr_t)tid);
|
||||
}
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* kstats
|
||||
* =========================================================================
|
||||
*/
|
||||
/*ARGSUSED*/
|
||||
kstat_t *
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||||
kstat_create(char *module, int instance, char *name, char *class,
|
||||
uchar_t type, ulong_t ndata, uchar_t ks_flag)
|
||||
{
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
/*ARGSUSED*/
|
||||
void
|
||||
kstat_install(kstat_t *ksp)
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||||
{}
|
||||
|
||||
/*ARGSUSED*/
|
||||
void
|
||||
kstat_delete(kstat_t *ksp)
|
||||
{}
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* mutexes
|
||||
* =========================================================================
|
||||
*/
|
||||
void
|
||||
zmutex_init(kmutex_t *mp)
|
||||
{
|
||||
mp->m_owner = NULL;
|
||||
mp->initialized = B_TRUE;
|
||||
(void) _mutex_init(&mp->m_lock, USYNC_THREAD, NULL);
|
||||
}
|
||||
|
||||
void
|
||||
zmutex_destroy(kmutex_t *mp)
|
||||
{
|
||||
ASSERT(mp->initialized == B_TRUE);
|
||||
ASSERT(mp->m_owner == NULL);
|
||||
(void) _mutex_destroy(&(mp)->m_lock);
|
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mp->m_owner = (void *)-1UL;
|
||||
mp->initialized = B_FALSE;
|
||||
}
|
||||
|
||||
void
|
||||
mutex_enter(kmutex_t *mp)
|
||||
{
|
||||
ASSERT(mp->initialized == B_TRUE);
|
||||
ASSERT(mp->m_owner != (void *)-1UL);
|
||||
ASSERT(mp->m_owner != curthread);
|
||||
VERIFY(mutex_lock(&mp->m_lock) == 0);
|
||||
ASSERT(mp->m_owner == NULL);
|
||||
mp->m_owner = curthread;
|
||||
}
|
||||
|
||||
int
|
||||
mutex_tryenter(kmutex_t *mp)
|
||||
{
|
||||
ASSERT(mp->initialized == B_TRUE);
|
||||
ASSERT(mp->m_owner != (void *)-1UL);
|
||||
if (0 == mutex_trylock(&mp->m_lock)) {
|
||||
ASSERT(mp->m_owner == NULL);
|
||||
mp->m_owner = curthread;
|
||||
return (1);
|
||||
} else {
|
||||
return (0);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
mutex_exit(kmutex_t *mp)
|
||||
{
|
||||
ASSERT(mp->initialized == B_TRUE);
|
||||
ASSERT(mutex_owner(mp) == curthread);
|
||||
mp->m_owner = NULL;
|
||||
VERIFY(mutex_unlock(&mp->m_lock) == 0);
|
||||
}
|
||||
|
||||
void *
|
||||
mutex_owner(kmutex_t *mp)
|
||||
{
|
||||
ASSERT(mp->initialized == B_TRUE);
|
||||
return (mp->m_owner);
|
||||
}
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* rwlocks
|
||||
* =========================================================================
|
||||
*/
|
||||
/*ARGSUSED*/
|
||||
void
|
||||
rw_init(krwlock_t *rwlp, char *name, int type, void *arg)
|
||||
{
|
||||
rwlock_init(&rwlp->rw_lock, USYNC_THREAD, NULL);
|
||||
rwlp->rw_owner = NULL;
|
||||
rwlp->initialized = B_TRUE;
|
||||
}
|
||||
|
||||
void
|
||||
rw_destroy(krwlock_t *rwlp)
|
||||
{
|
||||
rwlock_destroy(&rwlp->rw_lock);
|
||||
rwlp->rw_owner = (void *)-1UL;
|
||||
rwlp->initialized = B_FALSE;
|
||||
}
|
||||
|
||||
void
|
||||
rw_enter(krwlock_t *rwlp, krw_t rw)
|
||||
{
|
||||
ASSERT(!RW_LOCK_HELD(rwlp));
|
||||
ASSERT(rwlp->initialized == B_TRUE);
|
||||
ASSERT(rwlp->rw_owner != (void *)-1UL);
|
||||
ASSERT(rwlp->rw_owner != curthread);
|
||||
|
||||
if (rw == RW_READER)
|
||||
VERIFY(rw_rdlock(&rwlp->rw_lock) == 0);
|
||||
else
|
||||
VERIFY(rw_wrlock(&rwlp->rw_lock) == 0);
|
||||
|
||||
rwlp->rw_owner = curthread;
|
||||
}
|
||||
|
||||
void
|
||||
rw_exit(krwlock_t *rwlp)
|
||||
{
|
||||
ASSERT(rwlp->initialized == B_TRUE);
|
||||
ASSERT(rwlp->rw_owner != (void *)-1UL);
|
||||
|
||||
rwlp->rw_owner = NULL;
|
||||
VERIFY(rw_unlock(&rwlp->rw_lock) == 0);
|
||||
}
|
||||
|
||||
int
|
||||
rw_tryenter(krwlock_t *rwlp, krw_t rw)
|
||||
{
|
||||
int rv;
|
||||
|
||||
ASSERT(rwlp->initialized == B_TRUE);
|
||||
ASSERT(rwlp->rw_owner != (void *)-1UL);
|
||||
|
||||
if (rw == RW_READER)
|
||||
rv = rw_tryrdlock(&rwlp->rw_lock);
|
||||
else
|
||||
rv = rw_trywrlock(&rwlp->rw_lock);
|
||||
|
||||
if (rv == 0) {
|
||||
rwlp->rw_owner = curthread;
|
||||
return (1);
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*ARGSUSED*/
|
||||
int
|
||||
rw_tryupgrade(krwlock_t *rwlp)
|
||||
{
|
||||
ASSERT(rwlp->initialized == B_TRUE);
|
||||
ASSERT(rwlp->rw_owner != (void *)-1UL);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* condition variables
|
||||
* =========================================================================
|
||||
*/
|
||||
/*ARGSUSED*/
|
||||
void
|
||||
cv_init(kcondvar_t *cv, char *name, int type, void *arg)
|
||||
{
|
||||
VERIFY(cond_init(cv, type, NULL) == 0);
|
||||
}
|
||||
|
||||
void
|
||||
cv_destroy(kcondvar_t *cv)
|
||||
{
|
||||
VERIFY(cond_destroy(cv) == 0);
|
||||
}
|
||||
|
||||
void
|
||||
cv_wait(kcondvar_t *cv, kmutex_t *mp)
|
||||
{
|
||||
ASSERT(mutex_owner(mp) == curthread);
|
||||
mp->m_owner = NULL;
|
||||
int ret = cond_wait(cv, &mp->m_lock);
|
||||
VERIFY(ret == 0 || ret == EINTR);
|
||||
mp->m_owner = curthread;
|
||||
}
|
||||
|
||||
clock_t
|
||||
cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime)
|
||||
{
|
||||
int error;
|
||||
timestruc_t ts;
|
||||
clock_t delta;
|
||||
|
||||
top:
|
||||
delta = abstime - lbolt;
|
||||
if (delta <= 0)
|
||||
return (-1);
|
||||
|
||||
ts.tv_sec = delta / hz;
|
||||
ts.tv_nsec = (delta % hz) * (NANOSEC / hz);
|
||||
|
||||
ASSERT(mutex_owner(mp) == curthread);
|
||||
mp->m_owner = NULL;
|
||||
error = cond_reltimedwait(cv, &mp->m_lock, &ts);
|
||||
mp->m_owner = curthread;
|
||||
|
||||
if (error == ETIME)
|
||||
return (-1);
|
||||
|
||||
if (error == EINTR)
|
||||
goto top;
|
||||
|
||||
ASSERT(error == 0);
|
||||
|
||||
return (1);
|
||||
}
|
||||
|
||||
void
|
||||
cv_signal(kcondvar_t *cv)
|
||||
{
|
||||
VERIFY(cond_signal(cv) == 0);
|
||||
}
|
||||
|
||||
void
|
||||
cv_broadcast(kcondvar_t *cv)
|
||||
{
|
||||
VERIFY(cond_broadcast(cv) == 0);
|
||||
}
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* vnode operations
|
||||
* =========================================================================
|
||||
*/
|
||||
/*
|
||||
* Note: for the xxxat() versions of these functions, we assume that the
|
||||
* starting vp is always rootdir (which is true for spa_directory.c, the only
|
||||
* ZFS consumer of these interfaces). We assert this is true, and then emulate
|
||||
* them by adding '/' in front of the path.
|
||||
*/
|
||||
|
||||
/*ARGSUSED*/
|
||||
int
|
||||
vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3)
|
||||
{
|
||||
int fd;
|
||||
vnode_t *vp;
|
||||
int old_umask;
|
||||
char realpath[MAXPATHLEN];
|
||||
struct stat64 st;
|
||||
|
||||
/*
|
||||
* If we're accessing a real disk from userland, we need to use
|
||||
* the character interface to avoid caching. This is particularly
|
||||
* important if we're trying to look at a real in-kernel storage
|
||||
* pool from userland, e.g. via zdb, because otherwise we won't
|
||||
* see the changes occurring under the segmap cache.
|
||||
* On the other hand, the stupid character device returns zero
|
||||
* for its size. So -- gag -- we open the block device to get
|
||||
* its size, and remember it for subsequent VOP_GETATTR().
|
||||
*/
|
||||
if (strncmp(path, "/dev/", 5) == 0) {
|
||||
char *dsk;
|
||||
fd = open64(path, O_RDONLY);
|
||||
if (fd == -1)
|
||||
return (errno);
|
||||
if (fstat64(fd, &st) == -1) {
|
||||
close(fd);
|
||||
return (errno);
|
||||
}
|
||||
close(fd);
|
||||
(void) sprintf(realpath, "%s", path);
|
||||
dsk = strstr(path, "/dsk/");
|
||||
if (dsk != NULL)
|
||||
(void) sprintf(realpath + (dsk - path) + 1, "r%s",
|
||||
dsk + 1);
|
||||
} else {
|
||||
(void) sprintf(realpath, "%s", path);
|
||||
if (!(flags & FCREAT) && stat64(realpath, &st) == -1)
|
||||
return (errno);
|
||||
}
|
||||
|
||||
if (flags & FCREAT)
|
||||
old_umask = umask(0);
|
||||
|
||||
/*
|
||||
* The construct 'flags - FREAD' conveniently maps combinations of
|
||||
* FREAD and FWRITE to the corresponding O_RDONLY, O_WRONLY, and O_RDWR.
|
||||
*/
|
||||
fd = open64(realpath, flags - FREAD, mode);
|
||||
|
||||
if (flags & FCREAT)
|
||||
(void) umask(old_umask);
|
||||
|
||||
if (fd == -1)
|
||||
return (errno);
|
||||
|
||||
if (fstat64(fd, &st) == -1) {
|
||||
close(fd);
|
||||
return (errno);
|
||||
}
|
||||
|
||||
(void) fcntl(fd, F_SETFD, FD_CLOEXEC);
|
||||
|
||||
*vpp = vp = umem_zalloc(sizeof (vnode_t), UMEM_NOFAIL);
|
||||
|
||||
vp->v_fd = fd;
|
||||
vp->v_size = st.st_size;
|
||||
vp->v_path = spa_strdup(path);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*ARGSUSED*/
|
||||
int
|
||||
vn_openat(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2,
|
||||
int x3, vnode_t *startvp, int fd)
|
||||
{
|
||||
char *realpath = umem_alloc(strlen(path) + 2, UMEM_NOFAIL);
|
||||
int ret;
|
||||
|
||||
ASSERT(startvp == rootdir);
|
||||
(void) sprintf(realpath, "/%s", path);
|
||||
|
||||
/* fd ignored for now, need if want to simulate nbmand support */
|
||||
ret = vn_open(realpath, x1, flags, mode, vpp, x2, x3);
|
||||
|
||||
umem_free(realpath, strlen(path) + 2);
|
||||
|
||||
return (ret);
|
||||
}
|
||||
|
||||
/*ARGSUSED*/
|
||||
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)
|
||||
{
|
||||
ssize_t iolen, split;
|
||||
|
||||
if (uio == UIO_READ) {
|
||||
iolen = pread64(vp->v_fd, addr, len, offset);
|
||||
} else {
|
||||
/*
|
||||
* To simulate partial disk writes, we split writes into two
|
||||
* system calls so that the process can be killed in between.
|
||||
*/
|
||||
split = (len > 0 ? rand() % len : 0);
|
||||
iolen = pwrite64(vp->v_fd, addr, split, offset);
|
||||
iolen += pwrite64(vp->v_fd, (char *)addr + split,
|
||||
len - split, offset + split);
|
||||
}
|
||||
|
||||
if (iolen == -1)
|
||||
return (errno);
|
||||
if (residp)
|
||||
*residp = len - iolen;
|
||||
else if (iolen != len)
|
||||
return (EIO);
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
vn_close(vnode_t *vp)
|
||||
{
|
||||
close(vp->v_fd);
|
||||
spa_strfree(vp->v_path);
|
||||
umem_free(vp, sizeof (vnode_t));
|
||||
}
|
||||
|
||||
#ifdef ZFS_DEBUG
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* Figure out which debugging statements to print
|
||||
* =========================================================================
|
||||
*/
|
||||
|
||||
static char *dprintf_string;
|
||||
static int dprintf_print_all;
|
||||
|
||||
int
|
||||
dprintf_find_string(const char *string)
|
||||
{
|
||||
char *tmp_str = dprintf_string;
|
||||
int len = strlen(string);
|
||||
|
||||
/*
|
||||
* Find out if this is a string we want to print.
|
||||
* String format: file1.c,function_name1,file2.c,file3.c
|
||||
*/
|
||||
|
||||
while (tmp_str != NULL) {
|
||||
if (strncmp(tmp_str, string, len) == 0 &&
|
||||
(tmp_str[len] == ',' || tmp_str[len] == '\0'))
|
||||
return (1);
|
||||
tmp_str = strchr(tmp_str, ',');
|
||||
if (tmp_str != NULL)
|
||||
tmp_str++; /* Get rid of , */
|
||||
}
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
dprintf_setup(int *argc, char **argv)
|
||||
{
|
||||
int i, j;
|
||||
|
||||
/*
|
||||
* Debugging can be specified two ways: by setting the
|
||||
* environment variable ZFS_DEBUG, or by including a
|
||||
* "debug=..." argument on the command line. The command
|
||||
* line setting overrides the environment variable.
|
||||
*/
|
||||
|
||||
for (i = 1; i < *argc; i++) {
|
||||
int len = strlen("debug=");
|
||||
/* First look for a command line argument */
|
||||
if (strncmp("debug=", argv[i], len) == 0) {
|
||||
dprintf_string = argv[i] + len;
|
||||
/* Remove from args */
|
||||
for (j = i; j < *argc; j++)
|
||||
argv[j] = argv[j+1];
|
||||
argv[j] = NULL;
|
||||
(*argc)--;
|
||||
}
|
||||
}
|
||||
|
||||
if (dprintf_string == NULL) {
|
||||
/* Look for ZFS_DEBUG environment variable */
|
||||
dprintf_string = getenv("ZFS_DEBUG");
|
||||
}
|
||||
|
||||
/*
|
||||
* Are we just turning on all debugging?
|
||||
*/
|
||||
if (dprintf_find_string("on"))
|
||||
dprintf_print_all = 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* debug printfs
|
||||
* =========================================================================
|
||||
*/
|
||||
void
|
||||
__dprintf(const char *file, const char *func, int line, const char *fmt, ...)
|
||||
{
|
||||
const char *newfile;
|
||||
va_list adx;
|
||||
|
||||
/*
|
||||
* Get rid of annoying "../common/" prefix to filename.
|
||||
*/
|
||||
newfile = strrchr(file, '/');
|
||||
if (newfile != NULL) {
|
||||
newfile = newfile + 1; /* Get rid of leading / */
|
||||
} else {
|
||||
newfile = file;
|
||||
}
|
||||
|
||||
if (dprintf_print_all ||
|
||||
dprintf_find_string(newfile) ||
|
||||
dprintf_find_string(func)) {
|
||||
/* Print out just the function name if requested */
|
||||
flockfile(stdout);
|
||||
if (dprintf_find_string("pid"))
|
||||
(void) printf("%d ", getpid());
|
||||
if (dprintf_find_string("tid"))
|
||||
(void) printf("%u ", thr_self());
|
||||
if (dprintf_find_string("cpu"))
|
||||
(void) printf("%u ", getcpuid());
|
||||
if (dprintf_find_string("time"))
|
||||
(void) printf("%llu ", gethrtime());
|
||||
if (dprintf_find_string("long"))
|
||||
(void) printf("%s, line %d: ", newfile, line);
|
||||
(void) printf("%s: ", func);
|
||||
va_start(adx, fmt);
|
||||
(void) vprintf(fmt, adx);
|
||||
va_end(adx);
|
||||
funlockfile(stdout);
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* ZFS_DEBUG */
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* cmn_err() and panic()
|
||||
* =========================================================================
|
||||
*/
|
||||
static char ce_prefix[CE_IGNORE][10] = { "", "NOTICE: ", "WARNING: ", "" };
|
||||
static char ce_suffix[CE_IGNORE][2] = { "", "\n", "\n", "" };
|
||||
|
||||
void
|
||||
vpanic(const char *fmt, va_list adx)
|
||||
{
|
||||
(void) fprintf(stderr, "error: ");
|
||||
(void) vfprintf(stderr, fmt, adx);
|
||||
(void) fprintf(stderr, "\n");
|
||||
|
||||
abort(); /* think of it as a "user-level crash dump" */
|
||||
}
|
||||
|
||||
void
|
||||
panic(const char *fmt, ...)
|
||||
{
|
||||
va_list adx;
|
||||
|
||||
va_start(adx, fmt);
|
||||
vpanic(fmt, adx);
|
||||
va_end(adx);
|
||||
}
|
||||
|
||||
void
|
||||
vcmn_err(int ce, const char *fmt, va_list adx)
|
||||
{
|
||||
if (ce == CE_PANIC)
|
||||
vpanic(fmt, adx);
|
||||
if (ce != CE_NOTE) { /* suppress noise in userland stress testing */
|
||||
(void) fprintf(stderr, "%s", ce_prefix[ce]);
|
||||
(void) vfprintf(stderr, fmt, adx);
|
||||
(void) fprintf(stderr, "%s", ce_suffix[ce]);
|
||||
}
|
||||
}
|
||||
|
||||
/*PRINTFLIKE2*/
|
||||
void
|
||||
cmn_err(int ce, const char *fmt, ...)
|
||||
{
|
||||
va_list adx;
|
||||
|
||||
va_start(adx, fmt);
|
||||
vcmn_err(ce, fmt, adx);
|
||||
va_end(adx);
|
||||
}
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* kobj interfaces
|
||||
* =========================================================================
|
||||
*/
|
||||
struct _buf *
|
||||
kobj_open_file(char *name)
|
||||
{
|
||||
struct _buf *file;
|
||||
vnode_t *vp;
|
||||
|
||||
/* set vp as the _fd field of the file */
|
||||
if (vn_openat(name, UIO_SYSSPACE, FREAD, 0, &vp, 0, 0, rootdir,
|
||||
-1) != 0)
|
||||
return ((void *)-1UL);
|
||||
|
||||
file = umem_zalloc(sizeof (struct _buf), UMEM_NOFAIL);
|
||||
file->_fd = (intptr_t)vp;
|
||||
return (file);
|
||||
}
|
||||
|
||||
int
|
||||
kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off)
|
||||
{
|
||||
ssize_t resid;
|
||||
|
||||
vn_rdwr(UIO_READ, (vnode_t *)file->_fd, buf, size, (offset_t)off,
|
||||
UIO_SYSSPACE, 0, 0, 0, &resid);
|
||||
|
||||
return (size - resid);
|
||||
}
|
||||
|
||||
void
|
||||
kobj_close_file(struct _buf *file)
|
||||
{
|
||||
vn_close((vnode_t *)file->_fd);
|
||||
umem_free(file, sizeof (struct _buf));
|
||||
}
|
||||
|
||||
int
|
||||
kobj_get_filesize(struct _buf *file, uint64_t *size)
|
||||
{
|
||||
struct stat64 st;
|
||||
vnode_t *vp = (vnode_t *)file->_fd;
|
||||
|
||||
if (fstat64(vp->v_fd, &st) == -1) {
|
||||
vn_close(vp);
|
||||
return (errno);
|
||||
}
|
||||
*size = st.st_size;
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* misc routines
|
||||
* =========================================================================
|
||||
*/
|
||||
|
||||
void
|
||||
delay(clock_t ticks)
|
||||
{
|
||||
poll(0, 0, ticks * (1000 / hz));
|
||||
}
|
||||
|
||||
/*
|
||||
* Find highest one bit set.
|
||||
* Returns bit number + 1 of highest bit that is set, otherwise returns 0.
|
||||
* High order bit is 31 (or 63 in _LP64 kernel).
|
||||
*/
|
||||
int
|
||||
highbit(ulong_t i)
|
||||
{
|
||||
register int h = 1;
|
||||
|
||||
if (i == 0)
|
||||
return (0);
|
||||
#ifdef _LP64
|
||||
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;
|
||||
}
|
||||
return (h);
|
||||
}
|
||||
|
||||
static int random_fd = -1, urandom_fd = -1;
|
||||
|
||||
static int
|
||||
random_get_bytes_common(uint8_t *ptr, size_t len, int fd)
|
||||
{
|
||||
size_t resid = len;
|
||||
ssize_t bytes;
|
||||
|
||||
ASSERT(fd != -1);
|
||||
|
||||
while (resid != 0) {
|
||||
bytes = read(fd, ptr, resid);
|
||||
ASSERT3S(bytes, >=, 0);
|
||||
ptr += bytes;
|
||||
resid -= bytes;
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
random_get_bytes(uint8_t *ptr, size_t len)
|
||||
{
|
||||
return (random_get_bytes_common(ptr, len, random_fd));
|
||||
}
|
||||
|
||||
int
|
||||
random_get_pseudo_bytes(uint8_t *ptr, size_t len)
|
||||
{
|
||||
return (random_get_bytes_common(ptr, len, urandom_fd));
|
||||
}
|
||||
|
||||
int
|
||||
ddi_strtoul(const char *hw_serial, char **nptr, int base, unsigned long *result)
|
||||
{
|
||||
char *end;
|
||||
|
||||
*result = strtoul(hw_serial, &end, base);
|
||||
if (*result == 0)
|
||||
return (errno);
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* =========================================================================
|
||||
* kernel emulation setup & teardown
|
||||
* =========================================================================
|
||||
*/
|
||||
static int
|
||||
umem_out_of_memory(void)
|
||||
{
|
||||
char errmsg[] = "out of memory -- generating core dump\n";
|
||||
|
||||
write(fileno(stderr), errmsg, sizeof (errmsg));
|
||||
abort();
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
kernel_init(int mode)
|
||||
{
|
||||
umem_nofail_callback(umem_out_of_memory);
|
||||
|
||||
physmem = sysconf(_SC_PHYS_PAGES);
|
||||
|
||||
dprintf("physmem = %llu pages (%.2f GB)\n", physmem,
|
||||
(double)physmem * sysconf(_SC_PAGE_SIZE) / (1ULL << 30));
|
||||
|
||||
snprintf(hw_serial, sizeof (hw_serial), "%ld", gethostid());
|
||||
|
||||
VERIFY((random_fd = open("/dev/random", O_RDONLY)) != -1);
|
||||
VERIFY((urandom_fd = open("/dev/urandom", O_RDONLY)) != -1);
|
||||
|
||||
system_taskq_init();
|
||||
|
||||
spa_init(mode);
|
||||
}
|
||||
|
||||
void
|
||||
kernel_fini(void)
|
||||
{
|
||||
spa_fini();
|
||||
|
||||
close(random_fd);
|
||||
close(urandom_fd);
|
||||
|
||||
random_fd = -1;
|
||||
urandom_fd = -1;
|
||||
}
|
||||
|
||||
int
|
||||
z_uncompress(void *dst, size_t *dstlen, const void *src, size_t srclen)
|
||||
{
|
||||
int ret;
|
||||
uLongf len = *dstlen;
|
||||
|
||||
if ((ret = uncompress(dst, &len, src, srclen)) == Z_OK)
|
||||
*dstlen = (size_t)len;
|
||||
|
||||
return (ret);
|
||||
}
|
||||
|
||||
int
|
||||
z_compress_level(void *dst, size_t *dstlen, const void *src, size_t srclen,
|
||||
int level)
|
||||
{
|
||||
int ret;
|
||||
uLongf len = *dstlen;
|
||||
|
||||
if ((ret = compress2(dst, &len, src, srclen, level)) == Z_OK)
|
||||
*dstlen = (size_t)len;
|
||||
|
||||
return (ret);
|
||||
}
|
||||
|
||||
uid_t
|
||||
crgetuid(cred_t *cr)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
gid_t
|
||||
crgetgid(cred_t *cr)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
crgetngroups(cred_t *cr)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
gid_t *
|
||||
crgetgroups(cred_t *cr)
|
||||
{
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
int
|
||||
zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
|
||||
{
|
||||
return (0);
|
||||
}
|
||||
|
||||
ksiddomain_t *
|
||||
ksid_lookupdomain(const char *dom)
|
||||
{
|
||||
ksiddomain_t *kd;
|
||||
|
||||
kd = umem_zalloc(sizeof (ksiddomain_t), UMEM_NOFAIL);
|
||||
kd->kd_name = spa_strdup(dom);
|
||||
return (kd);
|
||||
}
|
||||
|
||||
void
|
||||
ksiddomain_rele(ksiddomain_t *ksid)
|
||||
{
|
||||
spa_strfree(ksid->kd_name);
|
||||
umem_free(ksid, sizeof (ksiddomain_t));
|
||||
}
|
||||
Reference in New Issue
Block a user