1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6#ifndef __XFS_LINUX__ 7#define __XFS_LINUX__ 8 9#include <linux/types.h> 10#include <linux/uuid.h> 11 12/* 13 * Kernel specific type declarations for XFS 14 */ 15 16typedef __s64 xfs_off_t; /* <file offset> type */ 17typedef unsigned long long xfs_ino_t; /* <inode> type */ 18typedef __s64 xfs_daddr_t; /* <disk address> type */ 19typedef __u32 xfs_dev_t; 20typedef __u32 xfs_nlink_t; 21 22#include "xfs_types.h" 23 24#include "kmem.h" 25#include "mrlock.h" 26 27#include <linux/semaphore.h> 28#include <linux/mm.h> 29#include <linux/sched/mm.h> 30#include <linux/kernel.h> 31#include <linux/blkdev.h> 32#include <linux/slab.h> 33#include <linux/crc32c.h> 34#include <linux/module.h> 35#include <linux/mutex.h> 36#include <linux/file.h> 37#include <linux/swap.h> 38#include <linux/errno.h> 39#include <linux/sched/signal.h> 40#include <linux/bitops.h> 41#include <linux/major.h> 42#include <linux/pagemap.h> 43#include <linux/vfs.h> 44#include <linux/seq_file.h> 45#include <linux/init.h> 46#include <linux/list.h> 47#include <linux/proc_fs.h> 48#include <linux/sort.h> 49#include <linux/cpu.h> 50#include <linux/notifier.h> 51#include <linux/delay.h> 52#include <linux/log2.h> 53#include <linux/spinlock.h> 54#include <linux/random.h> 55#include <linux/ctype.h> 56#include <linux/writeback.h> 57#include <linux/capability.h> 58#include <linux/kthread.h> 59#include <linux/freezer.h> 60#include <linux/list_sort.h> 61#include <linux/ratelimit.h> 62#include <linux/rhashtable.h> 63#include <linux/xattr.h> 64 65#include <asm/page.h> 66#include <asm/div64.h> 67#include <asm/param.h> 68#include <linux/uaccess.h> 69#include <asm/byteorder.h> 70#include <asm/unaligned.h> 71 72#include "xfs_fs.h" 73#include "xfs_stats.h" 74#include "xfs_sysctl.h" 75#include "xfs_iops.h" 76#include "xfs_aops.h" 77#include "xfs_super.h" 78#include "xfs_cksum.h" 79#include "xfs_buf.h" 80#include "xfs_message.h" 81 82#ifdef __BIG_ENDIAN 83#define XFS_NATIVE_HOST 1 84#else 85#undef XFS_NATIVE_HOST 86#endif 87 88#define irix_sgid_inherit xfs_params.sgid_inherit.val 89#define irix_symlink_mode xfs_params.symlink_mode.val 90#define xfs_panic_mask xfs_params.panic_mask.val 91#define xfs_error_level xfs_params.error_level.val 92#define xfs_syncd_centisecs xfs_params.syncd_timer.val 93#define xfs_stats_clear xfs_params.stats_clear.val 94#define xfs_inherit_sync xfs_params.inherit_sync.val 95#define xfs_inherit_nodump xfs_params.inherit_nodump.val 96#define xfs_inherit_noatime xfs_params.inherit_noatim.val 97#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val 98#define xfs_rotorstep xfs_params.rotorstep.val 99#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val 100#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val 101#define xfs_eofb_secs xfs_params.eofb_timer.val 102#define xfs_cowb_secs xfs_params.cowb_timer.val 103 104#define current_cpu() (raw_smp_processor_id()) 105#define current_set_flags_nested(sp, f) \ 106 (*(sp) = current->flags, current->flags |= (f)) 107#define current_restore_flags_nested(sp, f) \ 108 (current->flags = ((current->flags & ~(f)) | (*(sp) & (f)))) 109 110#define NBBY 8 /* number of bits per byte */ 111 112/* 113 * Size of block device i/o is parameterized here. 114 * Currently the system supports page-sized i/o. 115 */ 116#define BLKDEV_IOSHIFT PAGE_SHIFT 117#define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT) 118/* number of BB's per block device block */ 119#define BLKDEV_BB BTOBB(BLKDEV_IOSIZE) 120 121#define ENOATTR ENODATA /* Attribute not found */ 122#define EWRONGFS EINVAL /* Mount with wrong filesystem type */ 123#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ 124#define EFSBADCRC EBADMSG /* Bad CRC detected */ 125 126#define __return_address __builtin_return_address(0) 127 128/* 129 * Return the address of a label. Use barrier() so that the optimizer 130 * won't reorder code to refactor the error jumpouts into a single 131 * return, which throws off the reported address. 132 */ 133#define __this_address ({ __label__ __here; __here: barrier(); &&__here; }) 134 135#define XFS_PROJID_DEFAULT 0 136 137#define howmany(x, y) (((x)+((y)-1))/(y)) 138 139static inline void delay(long ticks) 140{ 141 schedule_timeout_uninterruptible(ticks); 142} 143 144/* 145 * XFS wrapper structure for sysfs support. It depends on external data 146 * structures and is embedded in various internal data structures to implement 147 * the XFS sysfs object heirarchy. Define it here for broad access throughout 148 * the codebase. 149 */ 150struct xfs_kobj { 151 struct kobject kobject; 152 struct completion complete; 153}; 154 155struct xstats { 156 struct xfsstats __percpu *xs_stats; 157 struct xfs_kobj xs_kobj; 158}; 159 160extern struct xstats xfsstats; 161 162static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev) 163{ 164 return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev)); 165} 166 167static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev) 168{ 169 return sysv_encode_dev(dev); 170} 171 172/* 173 * Various platform dependent calls that don't fit anywhere else 174 */ 175#define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) 176#define xfs_stack_trace() dump_stack() 177 178static inline uint64_t rounddown_64(uint64_t x, uint32_t y) 179{ 180 do_div(x, y); 181 return x * y; 182} 183 184static inline uint64_t roundup_64(uint64_t x, uint32_t y) 185{ 186 x += y - 1; 187 do_div(x, y); 188 return x * y; 189} 190 191static inline uint64_t howmany_64(uint64_t x, uint32_t y) 192{ 193 x += y - 1; 194 do_div(x, y); 195 return x; 196} 197 198int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count, 199 char *data, unsigned int op); 200 201#define ASSERT_ALWAYS(expr) \ 202 (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__)) 203 204#ifdef DEBUG 205#define ASSERT(expr) \ 206 (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__)) 207 208#else /* !DEBUG */ 209 210#ifdef XFS_WARN 211 212#define ASSERT(expr) \ 213 (likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__)) 214 215#else /* !DEBUG && !XFS_WARN */ 216 217#define ASSERT(expr) ((void)0) 218 219#endif /* XFS_WARN */ 220#endif /* DEBUG */ 221 222#define XFS_IS_CORRUPT(mp, expr) \ 223 (unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \ 224 NULL, 0, __FILE__, __LINE__, \ 225 __this_address), \ 226 true : false) 227 228#define STATIC static noinline 229 230#ifdef CONFIG_XFS_RT 231 232/* 233 * make sure we ignore the inode flag if the filesystem doesn't have a 234 * configured realtime device. 235 */ 236#define XFS_IS_REALTIME_INODE(ip) \ 237 (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) && \ 238 (ip)->i_mount->m_rtdev_targp) 239#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0) 240#else 241#define XFS_IS_REALTIME_INODE(ip) (0) 242#define XFS_IS_REALTIME_MOUNT(mp) (0) 243#endif 244 245/* 246 * Starting in Linux 4.15, the %p (raw pointer value) printk modifier 247 * prints a hashed version of the pointer to avoid leaking kernel 248 * pointers into dmesg. If we're trying to debug the kernel we want the 249 * raw values, so override this behavior as best we can. 250 */ 251#ifdef DEBUG 252# define PTR_FMT "%px" 253#else 254# define PTR_FMT "%p" 255#endif 256 257#endif /* __XFS_LINUX__ */ 258