diff options
Diffstat (limited to 'fs/xfs/support')
-rw-r--r-- | fs/xfs/support/debug.c | 127 | ||||
-rw-r--r-- | fs/xfs/support/debug.h | 72 | ||||
-rw-r--r-- | fs/xfs/support/ktrace.c | 346 | ||||
-rw-r--r-- | fs/xfs/support/ktrace.h | 101 | ||||
-rw-r--r-- | fs/xfs/support/move.c | 66 | ||||
-rw-r--r-- | fs/xfs/support/move.h | 84 | ||||
-rw-r--r-- | fs/xfs/support/qsort.c | 155 | ||||
-rw-r--r-- | fs/xfs/support/qsort.h | 41 | ||||
-rw-r--r-- | fs/xfs/support/uuid.c | 151 | ||||
-rw-r--r-- | fs/xfs/support/uuid.h | 48 |
10 files changed, 1191 insertions, 0 deletions
diff --git a/fs/xfs/support/debug.c b/fs/xfs/support/debug.c new file mode 100644 index 000000000000..7d6e1f37df10 --- /dev/null +++ b/fs/xfs/support/debug.c @@ -0,0 +1,127 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ + +#include "debug.h" + +#include <asm/page.h> +#include <linux/sched.h> +#include <linux/kernel.h> + +int doass = 1; +static char message[256]; /* keep it off the stack */ +static DEFINE_SPINLOCK(xfs_err_lock); + +/* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */ +#define XFS_MAX_ERR_LEVEL 7 +#define XFS_ERR_MASK ((1 << 3) - 1) +static char *err_level[XFS_MAX_ERR_LEVEL+1] = + {KERN_EMERG, KERN_ALERT, KERN_CRIT, + KERN_ERR, KERN_WARNING, KERN_NOTICE, + KERN_INFO, KERN_DEBUG}; + +void +assfail(char *a, char *f, int l) +{ + printk("XFS assertion failed: %s, file: %s, line: %d\n", a, f, l); + BUG(); +} + +#if ((defined(DEBUG) || defined(INDUCE_IO_ERRROR)) && !defined(NO_WANT_RANDOM)) + +unsigned long +random(void) +{ + static unsigned long RandomValue = 1; + /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */ + register long rv = RandomValue; + register long lo; + register long hi; + + hi = rv / 127773; + lo = rv % 127773; + rv = 16807 * lo - 2836 * hi; + if( rv <= 0 ) rv += 2147483647; + return( RandomValue = rv ); +} + +int +get_thread_id(void) +{ + return current->pid; +} + +#endif /* DEBUG || INDUCE_IO_ERRROR || !NO_WANT_RANDOM */ + +void +cmn_err(register int level, char *fmt, ...) +{ + char *fp = fmt; + int len; + ulong flags; + va_list ap; + + level &= XFS_ERR_MASK; + if (level > XFS_MAX_ERR_LEVEL) + level = XFS_MAX_ERR_LEVEL; + spin_lock_irqsave(&xfs_err_lock,flags); + va_start(ap, fmt); + if (*fmt == '!') fp++; + len = vsprintf(message, fp, ap); + if (message[len-1] != '\n') + strcat(message, "\n"); + printk("%s%s", err_level[level], message); + va_end(ap); + spin_unlock_irqrestore(&xfs_err_lock,flags); + + if (level == CE_PANIC) + BUG(); +} + + +void +icmn_err(register int level, char *fmt, va_list ap) +{ + ulong flags; + int len; + + level &= XFS_ERR_MASK; + if(level > XFS_MAX_ERR_LEVEL) + level = XFS_MAX_ERR_LEVEL; + spin_lock_irqsave(&xfs_err_lock,flags); + len = vsprintf(message, fmt, ap); + if (message[len-1] != '\n') + strcat(message, "\n"); + spin_unlock_irqrestore(&xfs_err_lock,flags); + printk("%s%s", err_level[level], message); + if (level == CE_PANIC) + BUG(); +} diff --git a/fs/xfs/support/debug.h b/fs/xfs/support/debug.h new file mode 100644 index 000000000000..40b0f4c54d9e --- /dev/null +++ b/fs/xfs/support/debug.h @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ +#ifndef __XFS_SUPPORT_DEBUG_H__ +#define __XFS_SUPPORT_DEBUG_H__ + +#include <stdarg.h> + +#define CE_DEBUG 7 /* debug */ +#define CE_CONT 6 /* continuation */ +#define CE_NOTE 5 /* notice */ +#define CE_WARN 4 /* warning */ +#define CE_ALERT 1 /* alert */ +#define CE_PANIC 0 /* panic */ + +extern void icmn_err(int, char *, va_list); +/* PRINTFLIKE2 */ +extern void cmn_err(int, char *, ...); + +#ifndef STATIC +# define STATIC static +#endif + +#ifdef DEBUG +# ifdef lint +# define ASSERT(EX) ((void)0) /* avoid "constant in conditional" babble */ +# else +# define ASSERT(EX) ((!doass||(EX))?((void)0):assfail(#EX, __FILE__, __LINE__)) +# endif /* lint */ +#else +# define ASSERT(x) ((void)0) +#endif + +extern int doass; /* dynamically turn off asserts */ +extern void assfail(char *, char *, int); +#ifdef DEBUG +extern unsigned long random(void); +extern int get_thread_id(void); +#endif + +#define ASSERT_ALWAYS(EX) ((EX)?((void)0):assfail(#EX, __FILE__, __LINE__)) +#define debug_stop_all_cpus(param) /* param is "cpumask_t *" */ + +#endif /* __XFS_SUPPORT_DEBUG_H__ */ diff --git a/fs/xfs/support/ktrace.c b/fs/xfs/support/ktrace.c new file mode 100644 index 000000000000..3dae14c8c55a --- /dev/null +++ b/fs/xfs/support/ktrace.c @@ -0,0 +1,346 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ + +#include <xfs.h> + +static kmem_zone_t *ktrace_hdr_zone; +static kmem_zone_t *ktrace_ent_zone; +static int ktrace_zentries; + +void +ktrace_init(int zentries) +{ + ktrace_zentries = zentries; + + ktrace_hdr_zone = kmem_zone_init(sizeof(ktrace_t), + "ktrace_hdr"); + ASSERT(ktrace_hdr_zone); + + ktrace_ent_zone = kmem_zone_init(ktrace_zentries + * sizeof(ktrace_entry_t), + "ktrace_ent"); + ASSERT(ktrace_ent_zone); +} + +void +ktrace_uninit(void) +{ + kmem_cache_destroy(ktrace_hdr_zone); + kmem_cache_destroy(ktrace_ent_zone); +} + +/* + * ktrace_alloc() + * + * Allocate a ktrace header and enough buffering for the given + * number of entries. + */ +ktrace_t * +ktrace_alloc(int nentries, int sleep) +{ + ktrace_t *ktp; + ktrace_entry_t *ktep; + + ktp = (ktrace_t*)kmem_zone_alloc(ktrace_hdr_zone, sleep); + + if (ktp == (ktrace_t*)NULL) { + /* + * KM_SLEEP callers don't expect failure. + */ + if (sleep & KM_SLEEP) + panic("ktrace_alloc: NULL memory on KM_SLEEP request!"); + + return NULL; + } + + /* + * Special treatment for buffers with the ktrace_zentries entries + */ + if (nentries == ktrace_zentries) { + ktep = (ktrace_entry_t*)kmem_zone_zalloc(ktrace_ent_zone, + sleep); + } else { + ktep = (ktrace_entry_t*)kmem_zalloc((nentries * sizeof(*ktep)), + sleep); + } + + if (ktep == NULL) { + /* + * KM_SLEEP callers don't expect failure. + */ + if (sleep & KM_SLEEP) + panic("ktrace_alloc: NULL memory on KM_SLEEP request!"); + + kmem_free(ktp, sizeof(*ktp)); + + return NULL; + } + + spinlock_init(&(ktp->kt_lock), "kt_lock"); + + ktp->kt_entries = ktep; + ktp->kt_nentries = nentries; + ktp->kt_index = 0; + ktp->kt_rollover = 0; + return ktp; +} + + +/* + * ktrace_free() + * + * Free up the ktrace header and buffer. It is up to the caller + * to ensure that no-one is referencing it. + */ +void +ktrace_free(ktrace_t *ktp) +{ + int entries_size; + + if (ktp == (ktrace_t *)NULL) + return; + + spinlock_destroy(&ktp->kt_lock); + + /* + * Special treatment for the Vnode trace buffer. + */ + if (ktp->kt_nentries == ktrace_zentries) { + kmem_zone_free(ktrace_ent_zone, ktp->kt_entries); + } else { + entries_size = (int)(ktp->kt_nentries * sizeof(ktrace_entry_t)); + + kmem_free(ktp->kt_entries, entries_size); + } + + kmem_zone_free(ktrace_hdr_zone, ktp); +} + + +/* + * Enter the given values into the "next" entry in the trace buffer. + * kt_index is always the index of the next entry to be filled. + */ +void +ktrace_enter( + ktrace_t *ktp, + void *val0, + void *val1, + void *val2, + void *val3, + void *val4, + void *val5, + void *val6, + void *val7, + void *val8, + void *val9, + void *val10, + void *val11, + void *val12, + void *val13, + void *val14, + void *val15) +{ + static lock_t wrap_lock = SPIN_LOCK_UNLOCKED; + unsigned long flags; + int index; + ktrace_entry_t *ktep; + + ASSERT(ktp != NULL); + + /* + * Grab an entry by pushing the index up to the next one. + */ + spin_lock_irqsave(&wrap_lock, flags); + index = ktp->kt_index; + if (++ktp->kt_index == ktp->kt_nentries) + ktp->kt_index = 0; + spin_unlock_irqrestore(&wrap_lock, flags); + + if (!ktp->kt_rollover && index == ktp->kt_nentries - 1) + ktp->kt_rollover = 1; + + ASSERT((index >= 0) && (index < ktp->kt_nentries)); + + ktep = &(ktp->kt_entries[index]); + + ktep->val[0] = val0; + ktep->val[1] = val1; + ktep->val[2] = val2; + ktep->val[3] = val3; + ktep->val[4] = val4; + ktep->val[5] = val5; + ktep->val[6] = val6; + ktep->val[7] = val7; + ktep->val[8] = val8; + ktep->val[9] = val9; + ktep->val[10] = val10; + ktep->val[11] = val11; + ktep->val[12] = val12; + ktep->val[13] = val13; + ktep->val[14] = val14; + ktep->val[15] = val15; +} + +/* + * Return the number of entries in the trace buffer. + */ +int +ktrace_nentries( + ktrace_t *ktp) +{ + if (ktp == NULL) { + return 0; + } + + return (ktp->kt_rollover ? ktp->kt_nentries : ktp->kt_index); +} + +/* + * ktrace_first() + * + * This is used to find the start of the trace buffer. + * In conjunction with ktrace_next() it can be used to + * iterate through the entire trace buffer. This code does + * not do any locking because it is assumed that it is called + * from the debugger. + * + * The caller must pass in a pointer to a ktrace_snap + * structure in which we will keep some state used to + * iterate through the buffer. This state must not touched + * by any code outside of this module. + */ +ktrace_entry_t * +ktrace_first(ktrace_t *ktp, ktrace_snap_t *ktsp) +{ + ktrace_entry_t *ktep; + int index; + int nentries; + + if (ktp->kt_rollover) + index = ktp->kt_index; + else + index = 0; + + ktsp->ks_start = index; + ktep = &(ktp->kt_entries[index]); + + nentries = ktrace_nentries(ktp); + index++; + if (index < nentries) { + ktsp->ks_index = index; + } else { + ktsp->ks_index = 0; + if (index > nentries) + ktep = NULL; + } + return ktep; +} + +/* + * ktrace_next() + * + * This is used to iterate through the entries of the given + * trace buffer. The caller must pass in the ktrace_snap_t + * structure initialized by ktrace_first(). The return value + * will be either a pointer to the next ktrace_entry or NULL + * if all of the entries have been traversed. + */ +ktrace_entry_t * +ktrace_next( + ktrace_t *ktp, + ktrace_snap_t *ktsp) +{ + int index; + ktrace_entry_t *ktep; + + index = ktsp->ks_index; + if (index == ktsp->ks_start) { + ktep = NULL; + } else { + ktep = &ktp->kt_entries[index]; + } + + index++; + if (index == ktrace_nentries(ktp)) { + ktsp->ks_index = 0; + } else { + ktsp->ks_index = index; + } + + return ktep; +} + +/* + * ktrace_skip() + * + * Skip the next "count" entries and return the entry after that. + * Return NULL if this causes us to iterate past the beginning again. + */ +ktrace_entry_t * +ktrace_skip( + ktrace_t *ktp, + int count, + ktrace_snap_t *ktsp) +{ + int index; + int new_index; + ktrace_entry_t *ktep; + int nentries = ktrace_nentries(ktp); + + index = ktsp->ks_index; + new_index = index + count; + while (new_index >= nentries) { + new_index -= nentries; + } + if (index == ktsp->ks_start) { + /* + * We've iterated around to the start, so we're done. + */ + ktep = NULL; + } else if ((new_index < index) && (index < ktsp->ks_index)) { + /* + * We've skipped past the start again, so we're done. + */ + ktep = NULL; + ktsp->ks_index = ktsp->ks_start; + } else { + ktep = &(ktp->kt_entries[new_index]); + new_index++; + if (new_index == nentries) { + ktsp->ks_index = 0; + } else { + ktsp->ks_index = new_index; + } + } + return ktep; +} diff --git a/fs/xfs/support/ktrace.h b/fs/xfs/support/ktrace.h new file mode 100644 index 000000000000..92d1a1a5d04b --- /dev/null +++ b/fs/xfs/support/ktrace.h @@ -0,0 +1,101 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ +#ifndef __XFS_SUPPORT_KTRACE_H__ +#define __XFS_SUPPORT_KTRACE_H__ + +#include <spin.h> + +/* + * Trace buffer entry structure. + */ +typedef struct ktrace_entry { + void *val[16]; +} ktrace_entry_t; + +/* + * Trace buffer header structure. + */ +typedef struct ktrace { + lock_t kt_lock; /* mutex to guard counters */ + int kt_nentries; /* number of entries in trace buf */ + int kt_index; /* current index in entries */ + int kt_rollover; + ktrace_entry_t *kt_entries; /* buffer of entries */ +} ktrace_t; + +/* + * Trace buffer snapshot structure. + */ +typedef struct ktrace_snap { + int ks_start; /* kt_index at time of snap */ + int ks_index; /* current index */ +} ktrace_snap_t; + + +#ifdef CONFIG_XFS_TRACE + +extern void ktrace_init(int zentries); +extern void ktrace_uninit(void); + +extern ktrace_t *ktrace_alloc(int, int); +extern void ktrace_free(ktrace_t *); + +extern void ktrace_enter( + ktrace_t *, + void *, + void *, + void *, + void *, + void *, + void *, + void *, + void *, + void *, + void *, + void *, + void *, + void *, + void *, + void *, + void *); + +extern ktrace_entry_t *ktrace_first(ktrace_t *, ktrace_snap_t *); +extern int ktrace_nentries(ktrace_t *); +extern ktrace_entry_t *ktrace_next(ktrace_t *, ktrace_snap_t *); +extern ktrace_entry_t *ktrace_skip(ktrace_t *, int, ktrace_snap_t *); + +#else +#define ktrace_init(x) do { } while (0) +#define ktrace_uninit() do { } while (0) +#endif /* CONFIG_XFS_TRACE */ + +#endif /* __XFS_SUPPORT_KTRACE_H__ */ diff --git a/fs/xfs/support/move.c b/fs/xfs/support/move.c new file mode 100644 index 000000000000..15b5194f16b2 --- /dev/null +++ b/fs/xfs/support/move.c @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ + +#include <xfs.h> + +/* Read from kernel buffer at src to user/kernel buffer defined + * by the uio structure. Advance the pointer in the uio struct + * as we go. + */ +int +uio_read(caddr_t src, size_t len, struct uio *uio) +{ + size_t count; + + if (!len || !uio->uio_resid) + return 0; + + count = uio->uio_iov->iov_len; + if (!count) + return 0; + if (count > len) + count = len; + + if (uio->uio_segflg == UIO_USERSPACE) { + if (copy_to_user(uio->uio_iov->iov_base, src, count)) + return EFAULT; + } else { + ASSERT(uio->uio_segflg == UIO_SYSSPACE); + memcpy(uio->uio_iov->iov_base, src, count); + } + + uio->uio_iov->iov_base = (void*)((char*)uio->uio_iov->iov_base + count); + uio->uio_iov->iov_len -= count; + uio->uio_offset += count; + uio->uio_resid -= count; + return 0; +} diff --git a/fs/xfs/support/move.h b/fs/xfs/support/move.h new file mode 100644 index 000000000000..3d406dc1c89e --- /dev/null +++ b/fs/xfs/support/move.h @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + * + * Portions Copyright (c) 1982, 1986, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#ifndef __XFS_SUPPORT_MOVE_H__ +#define __XFS_SUPPORT_MOVE_H__ + +#include <linux/uio.h> +#include <asm/uaccess.h> + +/* Segment flag values. */ +enum uio_seg { + UIO_USERSPACE, /* from user data space */ + UIO_SYSSPACE, /* from system space */ +}; + +struct uio { + struct iovec *uio_iov; /* pointer to array of iovecs */ + int uio_iovcnt; /* number of iovecs in array */ + xfs_off_t uio_offset; /* offset in file this uio corresponds to */ + int uio_resid; /* residual i/o count */ + enum uio_seg uio_segflg; /* see above */ +}; + +typedef struct uio uio_t; +typedef struct iovec iovec_t; + +extern int uio_read (caddr_t, size_t, uio_t *); + +#endif /* __XFS_SUPPORT_MOVE_H__ */ diff --git a/fs/xfs/support/qsort.c b/fs/xfs/support/qsort.c new file mode 100644 index 000000000000..1ec824140cf7 --- /dev/null +++ b/fs/xfs/support/qsort.c @@ -0,0 +1,155 @@ +/* + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <linux/kernel.h> +#include <linux/string.h> + +/* + * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function". + */ +#define swapcode(TYPE, parmi, parmj, n) { \ + long i = (n) / sizeof (TYPE); \ + register TYPE *pi = (TYPE *) (parmi); \ + register TYPE *pj = (TYPE *) (parmj); \ + do { \ + register TYPE t = *pi; \ + *pi++ = *pj; \ + *pj++ = t; \ + } while (--i > 0); \ +} + +#define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \ + es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1; + +static __inline void +swapfunc(char *a, char *b, int n, int swaptype) +{ + if (swaptype <= 1) + swapcode(long, a, b, n) + else + swapcode(char, a, b, n) +} + +#define swap(a, b) \ + if (swaptype == 0) { \ + long t = *(long *)(a); \ + *(long *)(a) = *(long *)(b); \ + *(long *)(b) = t; \ + } else \ + swapfunc(a, b, es, swaptype) + +#define vecswap(a, b, n) if ((n) > 0) swapfunc(a, b, n, swaptype) + +static __inline char * +med3(char *a, char *b, char *c, int (*cmp)(const void *, const void *)) +{ + return cmp(a, b) < 0 ? + (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a )) + :(cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c )); +} + +void +qsort(void *aa, size_t n, size_t es, int (*cmp)(const void *, const void *)) +{ + char *pa, *pb, *pc, *pd, *pl, *pm, *pn; + int d, r, swaptype, swap_cnt; + register char *a = aa; + +loop: SWAPINIT(a, es); + swap_cnt = 0; + if (n < 7) { + for (pm = (char *)a + es; pm < (char *) a + n * es; pm += es) + for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0; + pl -= es) + swap(pl, pl - es); + return; + } + pm = (char *)a + (n / 2) * es; + if (n > 7) { + pl = (char *)a; + pn = (char *)a + (n - 1) * es; + if (n > 40) { + d = (n / 8) * es; + pl = med3(pl, pl + d, pl + 2 * d, cmp); + pm = med3(pm - d, pm, pm + d, cmp); + pn = med3(pn - 2 * d, pn - d, pn, cmp); + } + pm = med3(pl, pm, pn, cmp); + } + swap(a, pm); + pa = pb = (char *)a + es; + + pc = pd = (char *)a + (n - 1) * es; + for (;;) { + while (pb <= pc && (r = cmp(pb, a)) <= 0) { + if (r == 0) { + swap_cnt = 1; + swap(pa, pb); + pa += es; + } + pb += es; + } + while (pb <= pc && (r = cmp(pc, a)) >= 0) { + if (r == 0) { + swap_cnt = 1; + swap(pc, pd); + pd -= es; + } + pc -= es; + } + if (pb > pc) + break; + swap(pb, pc); + swap_cnt = 1; + pb += es; + pc -= es; + } + if (swap_cnt == 0) { /* Switch to insertion sort */ + for (pm = (char *) a + es; pm < (char *) a + n * es; pm += es) + for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0; + pl -= es) + swap(pl, pl - es); + return; + } + + pn = (char *)a + n * es; + r = min(pa - (char *)a, pb - pa); + vecswap(a, pb - r, r); + r = min((long)(pd - pc), (long)(pn - pd - es)); + vecswap(pb, pn - r, r); + if ((r = pb - pa) > es) + qsort(a, r / es, es, cmp); + if ((r = pd - pc) > es) { + /* Iterate rather than recurse to save stack space */ + a = pn - r; + n = r / es; + goto loop; + } +/* qsort(pn - r, r / es, es, cmp);*/ +} diff --git a/fs/xfs/support/qsort.h b/fs/xfs/support/qsort.h new file mode 100644 index 000000000000..94263106d716 --- /dev/null +++ b/fs/xfs/support/qsort.h @@ -0,0 +1,41 @@ +/* + * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ + +#ifndef QSORT_H +#define QSORT_H + +extern void qsort (void *const pbase, + size_t total_elems, + size_t size, + int (*cmp)(const void *, const void *)); + +#endif diff --git a/fs/xfs/support/uuid.c b/fs/xfs/support/uuid.c new file mode 100644 index 000000000000..81f40cfcb267 --- /dev/null +++ b/fs/xfs/support/uuid.c @@ -0,0 +1,151 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ + +#include <xfs.h> + +static mutex_t uuid_monitor; +static int uuid_table_size; +static uuid_t *uuid_table; + +void +uuid_init(void) +{ + mutex_init(&uuid_monitor, MUTEX_DEFAULT, "uuid_monitor"); +} + +/* + * uuid_getnodeuniq - obtain the node unique fields of a UUID. + * + * This is not in any way a standard or condoned UUID function; + * it just something that's needed for user-level file handles. + */ +void +uuid_getnodeuniq(uuid_t *uuid, int fsid [2]) +{ + char *uu = (char *)uuid; + + /* on IRIX, this function assumes big-endian fields within + * the uuid, so we use INT_GET to get the same result on + * little-endian systems + */ + + fsid[0] = (INT_GET(*(u_int16_t*)(uu+8), ARCH_CONVERT) << 16) + + INT_GET(*(u_int16_t*)(uu+4), ARCH_CONVERT); + fsid[1] = INT_GET(*(u_int32_t*)(uu ), ARCH_CONVERT); +} + +void +uuid_create_nil(uuid_t *uuid) +{ + memset(uuid, 0, sizeof(*uuid)); +} + +int +uuid_is_nil(uuid_t *uuid) +{ + int i; + char *cp = (char *)uuid; + + if (uuid == NULL) + return 0; + /* implied check of version number here... */ + for (i = 0; i < sizeof *uuid; i++) + if (*cp++) return 0; /* not nil */ + return 1; /* is nil */ +} + +int +uuid_equal(uuid_t *uuid1, uuid_t *uuid2) +{ + return memcmp(uuid1, uuid2, sizeof(uuid_t)) ? 0 : 1; +} + +/* + * Given a 128-bit uuid, return a 64-bit value by adding the top and bottom + * 64-bit words. NOTE: This function can not be changed EVER. Although + * brain-dead, some applications depend on this 64-bit value remaining + * persistent. Specifically, DMI vendors store the value as a persistent + * filehandle. + */ +__uint64_t +uuid_hash64(uuid_t *uuid) +{ + __uint64_t *sp = (__uint64_t *)uuid; + + return sp[0] + sp[1]; +} + +int +uuid_table_insert(uuid_t *uuid) +{ + int i, hole; + + mutex_lock(&uuid_monitor, PVFS); + for (i = 0, hole = -1; i < uuid_table_size; i++) { + if (uuid_is_nil(&uuid_table[i])) { + hole = i; + continue; + } + if (uuid_equal(uuid, &uuid_table[i])) { + mutex_unlock(&uuid_monitor); + return 0; + } + } + if (hole < 0) { + uuid_table = kmem_realloc(uuid_table, + (uuid_table_size + 1) * sizeof(*uuid_table), + uuid_table_size * sizeof(*uuid_table), + KM_SLEEP); + hole = uuid_table_size++; + } + uuid_table[hole] = *uuid; + mutex_unlock(&uuid_monitor); + return 1; +} + +void +uuid_table_remove(uuid_t *uuid) +{ + int i; + + mutex_lock(&uuid_monitor, PVFS); + for (i = 0; i < uuid_table_size; i++) { + if (uuid_is_nil(&uuid_table[i])) + continue; + if (!uuid_equal(uuid, &uuid_table[i])) + continue; + uuid_create_nil(&uuid_table[i]); + break; + } + ASSERT(i < uuid_table_size); + mutex_unlock(&uuid_monitor); +} diff --git a/fs/xfs/support/uuid.h b/fs/xfs/support/uuid.h new file mode 100644 index 000000000000..5220ea58ba2b --- /dev/null +++ b/fs/xfs/support/uuid.h @@ -0,0 +1,48 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ +#ifndef __XFS_SUPPORT_UUID_H__ +#define __XFS_SUPPORT_UUID_H__ + +typedef struct { + unsigned char __u_bits[16]; +} uuid_t; + +void uuid_init(void); +void uuid_create_nil(uuid_t *uuid); +int uuid_is_nil(uuid_t *uuid); +int uuid_equal(uuid_t *uuid1, uuid_t *uuid2); +void uuid_getnodeuniq(uuid_t *uuid, int fsid [2]); +__uint64_t uuid_hash64(uuid_t *uuid); +int uuid_table_insert(uuid_t *uuid); +void uuid_table_remove(uuid_t *uuid); + +#endif /* __XFS_SUPPORT_UUID_H__ */ |