| /* |
| * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms 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. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| #ifndef __XFS_LINUX__ |
| #define __XFS_LINUX__ |
| |
| #include <linux/types.h> |
| |
| /* |
| * Some types are conditional depending on the target system. |
| * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits. |
| * XFS_BIG_INUMS needs the VFS inode number to be 64 bits, as well |
| * as requiring XFS_BIG_BLKNOS to be set. |
| */ |
| #if defined(CONFIG_LBD) || (BITS_PER_LONG == 64) |
| # define XFS_BIG_BLKNOS 1 |
| # if BITS_PER_LONG == 64 |
| # define XFS_BIG_INUMS 1 |
| # else |
| # define XFS_BIG_INUMS 0 |
| # endif |
| #else |
| # define XFS_BIG_BLKNOS 0 |
| # define XFS_BIG_INUMS 0 |
| #endif |
| |
| #include <xfs_types.h> |
| #include <xfs_arch.h> |
| |
| #include <kmem.h> |
| #include <mrlock.h> |
| #include <sv.h> |
| #include <mutex.h> |
| #include <time.h> |
| |
| #include <support/ktrace.h> |
| #include <support/debug.h> |
| #include <support/uuid.h> |
| |
| #include <linux/semaphore.h> |
| #include <linux/mm.h> |
| #include <linux/kernel.h> |
| #include <linux/blkdev.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/file.h> |
| #include <linux/swap.h> |
| #include <linux/errno.h> |
| #include <linux/sched.h> |
| #include <linux/bitops.h> |
| #include <linux/major.h> |
| #include <linux/pagemap.h> |
| #include <linux/vfs.h> |
| #include <linux/seq_file.h> |
| #include <linux/init.h> |
| #include <linux/list.h> |
| #include <linux/proc_fs.h> |
| #include <linux/sort.h> |
| #include <linux/cpu.h> |
| #include <linux/notifier.h> |
| #include <linux/delay.h> |
| #include <linux/log2.h> |
| #include <linux/spinlock.h> |
| #include <linux/random.h> |
| #include <linux/ctype.h> |
| |
| #include <asm/page.h> |
| #include <asm/div64.h> |
| #include <asm/param.h> |
| #include <asm/uaccess.h> |
| #include <asm/byteorder.h> |
| #include <asm/unaligned.h> |
| |
| #include <xfs_vfs.h> |
| #include <xfs_cred.h> |
| #include <xfs_vnode.h> |
| #include <xfs_stats.h> |
| #include <xfs_sysctl.h> |
| #include <xfs_iops.h> |
| #include <xfs_aops.h> |
| #include <xfs_super.h> |
| #include <xfs_globals.h> |
| #include <xfs_fs_subr.h> |
| #include <xfs_lrw.h> |
| #include <xfs_buf.h> |
| |
| /* |
| * Feature macros (disable/enable) |
| */ |
| #ifdef CONFIG_SMP |
| #define HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ |
| #else |
| #undef HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ |
| #endif |
| |
| #define restricted_chown xfs_params.restrict_chown.val |
| #define irix_sgid_inherit xfs_params.sgid_inherit.val |
| #define irix_symlink_mode xfs_params.symlink_mode.val |
| #define xfs_panic_mask xfs_params.panic_mask.val |
| #define xfs_error_level xfs_params.error_level.val |
| #define xfs_syncd_centisecs xfs_params.syncd_timer.val |
| #define xfs_stats_clear xfs_params.stats_clear.val |
| #define xfs_inherit_sync xfs_params.inherit_sync.val |
| #define xfs_inherit_nodump xfs_params.inherit_nodump.val |
| #define xfs_inherit_noatime xfs_params.inherit_noatim.val |
| #define xfs_buf_timer_centisecs xfs_params.xfs_buf_timer.val |
| #define xfs_buf_age_centisecs xfs_params.xfs_buf_age.val |
| #define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val |
| #define xfs_rotorstep xfs_params.rotorstep.val |
| #define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val |
| #define xfs_fstrm_centisecs xfs_params.fstrm_timer.val |
| |
| #define current_cpu() (raw_smp_processor_id()) |
| #define current_pid() (current->pid) |
| #define current_fsuid(cred) (current->fsuid) |
| #define current_fsgid(cred) (current->fsgid) |
| #define current_test_flags(f) (current->flags & (f)) |
| #define current_set_flags_nested(sp, f) \ |
| (*(sp) = current->flags, current->flags |= (f)) |
| #define current_clear_flags_nested(sp, f) \ |
| (*(sp) = current->flags, current->flags &= ~(f)) |
| #define current_restore_flags_nested(sp, f) \ |
| (current->flags = ((current->flags & ~(f)) | (*(sp) & (f)))) |
| |
| #define spinlock_destroy(lock) |
| |
| #define NBBY 8 /* number of bits per byte */ |
| |
| /* |
| * Size of block device i/o is parameterized here. |
| * Currently the system supports page-sized i/o. |
| */ |
| #define BLKDEV_IOSHIFT PAGE_CACHE_SHIFT |
| #define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT) |
| /* number of BB's per block device block */ |
| #define BLKDEV_BB BTOBB(BLKDEV_IOSIZE) |
| |
| #define ENOATTR ENODATA /* Attribute not found */ |
| #define EWRONGFS EINVAL /* Mount with wrong filesystem type */ |
| #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ |
| |
| #define SYNCHRONIZE() barrier() |
| #define __return_address __builtin_return_address(0) |
| |
| /* |
| * IRIX (BSD) quotactl makes use of separate commands for user/group, |
| * whereas on Linux the syscall encodes this information into the cmd |
| * field (see the QCMD macro in quota.h). These macros help keep the |
| * code portable - they are not visible from the syscall interface. |
| */ |
| #define Q_XSETGQLIM XQM_CMD(8) /* set groups disk limits */ |
| #define Q_XGETGQUOTA XQM_CMD(9) /* get groups disk limits */ |
| #define Q_XSETPQLIM XQM_CMD(10) /* set projects disk limits */ |
| #define Q_XGETPQUOTA XQM_CMD(11) /* get projects disk limits */ |
| |
| #define dfltprid 0 |
| #define MAXPATHLEN 1024 |
| |
| #define MIN(a,b) (min(a,b)) |
| #define MAX(a,b) (max(a,b)) |
| #define howmany(x, y) (((x)+((y)-1))/(y)) |
| |
| /* |
| * Various platform dependent calls that don't fit anywhere else |
| */ |
| #define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) |
| #define xfs_stack_trace() dump_stack() |
| #define xfs_itruncate_data(ip, off) \ |
| (-vmtruncate(VFS_I(ip), (off))) |
| |
| |
| /* Move the kernel do_div definition off to one side */ |
| |
| #if defined __i386__ |
| /* For ia32 we need to pull some tricks to get past various versions |
| * of the compiler which do not like us using do_div in the middle |
| * of large functions. |
| */ |
| static inline __u32 xfs_do_div(void *a, __u32 b, int n) |
| { |
| __u32 mod; |
| |
| switch (n) { |
| case 4: |
| mod = *(__u32 *)a % b; |
| *(__u32 *)a = *(__u32 *)a / b; |
| return mod; |
| case 8: |
| { |
| unsigned long __upper, __low, __high, __mod; |
| __u64 c = *(__u64 *)a; |
| __upper = __high = c >> 32; |
| __low = c; |
| if (__high) { |
| __upper = __high % (b); |
| __high = __high / (b); |
| } |
| asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); |
| asm("":"=A" (c):"a" (__low),"d" (__high)); |
| *(__u64 *)a = c; |
| return __mod; |
| } |
| } |
| |
| /* NOTREACHED */ |
| return 0; |
| } |
| |
| /* Side effect free 64 bit mod operation */ |
| static inline __u32 xfs_do_mod(void *a, __u32 b, int n) |
| { |
| switch (n) { |
| case 4: |
| return *(__u32 *)a % b; |
| case 8: |
| { |
| unsigned long __upper, __low, __high, __mod; |
| __u64 c = *(__u64 *)a; |
| __upper = __high = c >> 32; |
| __low = c; |
| if (__high) { |
| __upper = __high % (b); |
| __high = __high / (b); |
| } |
| asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); |
| asm("":"=A" (c):"a" (__low),"d" (__high)); |
| return __mod; |
| } |
| } |
| |
| /* NOTREACHED */ |
| return 0; |
| } |
| #else |
| static inline __u32 xfs_do_div(void *a, __u32 b, int n) |
| { |
| __u32 mod; |
| |
| switch (n) { |
| case 4: |
| mod = *(__u32 *)a % b; |
| *(__u32 *)a = *(__u32 *)a / b; |
| return mod; |
| case 8: |
| mod = do_div(*(__u64 *)a, b); |
| return mod; |
| } |
| |
| /* NOTREACHED */ |
| return 0; |
| } |
| |
| /* Side effect free 64 bit mod operation */ |
| static inline __u32 xfs_do_mod(void *a, __u32 b, int n) |
| { |
| switch (n) { |
| case 4: |
| return *(__u32 *)a % b; |
| case 8: |
| { |
| __u64 c = *(__u64 *)a; |
| return do_div(c, b); |
| } |
| } |
| |
| /* NOTREACHED */ |
| return 0; |
| } |
| #endif |
| |
| #undef do_div |
| #define do_div(a, b) xfs_do_div(&(a), (b), sizeof(a)) |
| #define do_mod(a, b) xfs_do_mod(&(a), (b), sizeof(a)) |
| |
| static inline __uint64_t roundup_64(__uint64_t x, __uint32_t y) |
| { |
| x += y - 1; |
| do_div(x, y); |
| return(x * y); |
| } |
| |
| static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y) |
| { |
| x += y - 1; |
| do_div(x, y); |
| return x; |
| } |
| |
| /* ARM old ABI has some weird alignment/padding */ |
| #if defined(__arm__) && !defined(__ARM_EABI__) |
| #define __arch_pack __attribute__((packed)) |
| #else |
| #define __arch_pack |
| #endif |
| |
| #endif /* __XFS_LINUX__ */ |