fs/xfs/xfs_linux.h

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
delay
xfs_kuid_to_uid
xfs_uid_to_kuid
xfs_kgid_to_gid
xfs_gid_to_kgid
xfs_to_linux_dev_t
linux_to_xfs_dev_t
roundup_64
howmany_64
   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 
  16 typedef __s64                   xfs_off_t;      /* <file offset> type */
  17 typedef unsigned long long      xfs_ino_t;      /* <inode> type */
  18 typedef __s64                   xfs_daddr_t;    /* <disk address> type */
  19 typedef __u32                   xfs_dev_t;
  20 typedef __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 
  64 #include <asm/page.h>
  65 #include <asm/div64.h>
  66 #include <asm/param.h>
  67 #include <linux/uaccess.h>
  68 #include <asm/byteorder.h>
  69 #include <asm/unaligned.h>
  70 
  71 #include "xfs_fs.h"
  72 #include "xfs_stats.h"
  73 #include "xfs_sysctl.h"
  74 #include "xfs_iops.h"
  75 #include "xfs_aops.h"
  76 #include "xfs_super.h"
  77 #include "xfs_cksum.h"
  78 #include "xfs_buf.h"
  79 #include "xfs_message.h"
  80 
  81 #ifdef __BIG_ENDIAN
  82 #define XFS_NATIVE_HOST 1
  83 #else
  84 #undef XFS_NATIVE_HOST
  85 #endif
  86 
  87 #define irix_sgid_inherit       xfs_params.sgid_inherit.val
  88 #define irix_symlink_mode       xfs_params.symlink_mode.val
  89 #define xfs_panic_mask          xfs_params.panic_mask.val
  90 #define xfs_error_level         xfs_params.error_level.val
  91 #define xfs_syncd_centisecs     xfs_params.syncd_timer.val
  92 #define xfs_stats_clear         xfs_params.stats_clear.val
  93 #define xfs_inherit_sync        xfs_params.inherit_sync.val
  94 #define xfs_inherit_nodump      xfs_params.inherit_nodump.val
  95 #define xfs_inherit_noatime     xfs_params.inherit_noatim.val
  96 #define xfs_inherit_nosymlinks  xfs_params.inherit_nosym.val
  97 #define xfs_rotorstep           xfs_params.rotorstep.val
  98 #define xfs_inherit_nodefrag    xfs_params.inherit_nodfrg.val
  99 #define xfs_fstrm_centisecs     xfs_params.fstrm_timer.val
 100 #define xfs_eofb_secs           xfs_params.eofb_timer.val
 101 #define xfs_cowb_secs           xfs_params.cowb_timer.val
 102 
 103 #define current_cpu()           (raw_smp_processor_id())
 104 #define current_pid()           (current->pid)
 105 #define current_test_flags(f)   (current->flags & (f))
 106 #define current_set_flags_nested(sp, f)         \
 107                 (*(sp) = current->flags, current->flags |= (f))
 108 #define current_clear_flags_nested(sp, f)       \
 109                 (*(sp) = current->flags, current->flags &= ~(f))
 110 #define current_restore_flags_nested(sp, f)     \
 111                 (current->flags = ((current->flags & ~(f)) | (*(sp) & (f))))
 112 
 113 #define NBBY            8               /* number of bits per byte */
 114 
 115 /*
 116  * Size of block device i/o is parameterized here.
 117  * Currently the system supports page-sized i/o.
 118  */
 119 #define BLKDEV_IOSHIFT          PAGE_SHIFT
 120 #define BLKDEV_IOSIZE           (1<<BLKDEV_IOSHIFT)
 121 /* number of BB's per block device block */
 122 #define BLKDEV_BB               BTOBB(BLKDEV_IOSIZE)
 123 
 124 #define ENOATTR         ENODATA         /* Attribute not found */
 125 #define EWRONGFS        EINVAL          /* Mount with wrong filesystem type */
 126 #define EFSCORRUPTED    EUCLEAN         /* Filesystem is corrupted */
 127 #define EFSBADCRC       EBADMSG         /* Bad CRC detected */
 128 
 129 #define SYNCHRONIZE()   barrier()
 130 #define __return_address __builtin_return_address(0)
 131 
 132 /*
 133  * Return the address of a label.  Use barrier() so that the optimizer
 134  * won't reorder code to refactor the error jumpouts into a single
 135  * return, which throws off the reported address.
 136  */
 137 #define __this_address  ({ __label__ __here; __here: barrier(); &&__here; })
 138 
 139 #define XFS_PROJID_DEFAULT      0
 140 
 141 #define howmany(x, y)   (((x)+((y)-1))/(y))
 142 
 143 static inline void delay(long ticks)
 144 {
 145         schedule_timeout_uninterruptible(ticks);
 146 }
 147 
 148 /*
 149  * XFS wrapper structure for sysfs support. It depends on external data
 150  * structures and is embedded in various internal data structures to implement
 151  * the XFS sysfs object heirarchy. Define it here for broad access throughout
 152  * the codebase.
 153  */
 154 struct xfs_kobj {
 155         struct kobject          kobject;
 156         struct completion       complete;
 157 };
 158 
 159 struct xstats {
 160         struct xfsstats __percpu        *xs_stats;
 161         struct xfs_kobj                 xs_kobj;
 162 };
 163 
 164 extern struct xstats xfsstats;
 165 
 166 /* Kernel uid/gid conversion. These are used to convert to/from the on disk
 167  * uid_t/gid_t types to the kuid_t/kgid_t types that the kernel uses internally.
 168  * The conversion here is type only, the value will remain the same since we
 169  * are converting to the init_user_ns. The uid is later mapped to a particular
 170  * user namespace value when crossing the kernel/user boundary.
 171  */
 172 static inline uint32_t xfs_kuid_to_uid(kuid_t uid)
 173 {
 174         return from_kuid(&init_user_ns, uid);
 175 }
 176 
 177 static inline kuid_t xfs_uid_to_kuid(uint32_t uid)
 178 {
 179         return make_kuid(&init_user_ns, uid);
 180 }
 181 
 182 static inline uint32_t xfs_kgid_to_gid(kgid_t gid)
 183 {
 184         return from_kgid(&init_user_ns, gid);
 185 }
 186 
 187 static inline kgid_t xfs_gid_to_kgid(uint32_t gid)
 188 {
 189         return make_kgid(&init_user_ns, gid);
 190 }
 191 
 192 static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev)
 193 {
 194         return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
 195 }
 196 
 197 static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev)
 198 {
 199         return sysv_encode_dev(dev);
 200 }
 201 
 202 /*
 203  * Various platform dependent calls that don't fit anywhere else
 204  */
 205 #define xfs_sort(a,n,s,fn)      sort(a,n,s,fn,NULL)
 206 #define xfs_stack_trace()       dump_stack()
 207 
 208 static inline uint64_t roundup_64(uint64_t x, uint32_t y)
 209 {
 210         x += y - 1;
 211         do_div(x, y);
 212         return x * y;
 213 }
 214 
 215 static inline uint64_t howmany_64(uint64_t x, uint32_t y)
 216 {
 217         x += y - 1;
 218         do_div(x, y);
 219         return x;
 220 }
 221 
 222 int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
 223                 char *data, unsigned int op);
 224 
 225 #define ASSERT_ALWAYS(expr)     \
 226         (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
 227 
 228 #ifdef DEBUG
 229 #define ASSERT(expr)    \
 230         (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
 231 
 232 #else   /* !DEBUG */
 233 
 234 #ifdef XFS_WARN
 235 
 236 #define ASSERT(expr)    \
 237         (likely(expr) ? (void)0 : asswarn(#expr, __FILE__, __LINE__))
 238 
 239 #else   /* !DEBUG && !XFS_WARN */
 240 
 241 #define ASSERT(expr)    ((void)0)
 242 
 243 #endif /* XFS_WARN */
 244 #endif /* DEBUG */
 245 
 246 #define STATIC static noinline
 247 
 248 #ifdef CONFIG_XFS_RT
 249 
 250 /*
 251  * make sure we ignore the inode flag if the filesystem doesn't have a
 252  * configured realtime device.
 253  */
 254 #define XFS_IS_REALTIME_INODE(ip)                       \
 255         (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) &&  \
 256          (ip)->i_mount->m_rtdev_targp)
 257 #define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0)
 258 #else
 259 #define XFS_IS_REALTIME_INODE(ip) (0)
 260 #define XFS_IS_REALTIME_MOUNT(mp) (0)
 261 #endif
 262 
 263 /*
 264  * Starting in Linux 4.15, the %p (raw pointer value) printk modifier
 265  * prints a hashed version of the pointer to avoid leaking kernel
 266  * pointers into dmesg.  If we're trying to debug the kernel we want the
 267  * raw values, so override this behavior as best we can.
 268  */
 269 #ifdef DEBUG
 270 # define PTR_FMT "%px"
 271 #else
 272 # define PTR_FMT "%p"
 273 #endif
 274 
 275 #endif /* __XFS_LINUX__ */
/* [<][>][^][v][top][bottom][index][help] */
root/fs/xfs/xfs_linux.h

INCLUDED FROM

DEFINITIONS
