| /* |
| * 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> |
| |
| /* |
| * Kernel specific type declarations for XFS |
| */ |
| typedef signed char __int8_t; |
| typedef unsigned char __uint8_t; |
| typedef signed short int __int16_t; |
| typedef unsigned short int __uint16_t; |
| typedef signed int __int32_t; |
| typedef unsigned int __uint32_t; |
| typedef signed long long int __int64_t; |
| typedef unsigned long long int __uint64_t; |
| |
| typedef __s64 xfs_off_t; /* <file offset> type */ |
| typedef unsigned long long xfs_ino_t; /* <inode> type */ |
| typedef __s64 xfs_daddr_t; /* <disk address> type */ |
| typedef __u32 xfs_dev_t; |
| typedef __u32 xfs_nlink_t; |
| |
| #include "xfs_types.h" |
| |
| #include "kmem.h" |
| #include "mrlock.h" |
| #include "uuid.h" |
| |
| #include <linux/semaphore.h> |
| #include <linux/mm.h> |
| #include <linux/kernel.h> |
| #include <linux/blkdev.h> |
| #include <linux/slab.h> |
| #include <linux/crc32c.h> |
| #include <linux/module.h> |
| #include <linux/mutex.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 <linux/writeback.h> |
| #include <linux/capability.h> |
| #include <linux/kthread.h> |
| #include <linux/freezer.h> |
| #include <linux/list_sort.h> |
| #include <linux/ratelimit.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_fs.h" |
| #include "xfs_stats.h" |
| #include "xfs_sysctl.h" |
| #include "xfs_iops.h" |
| #include "xfs_aops.h" |
| #include "xfs_super.h" |
| #include "xfs_cksum.h" |
| #include "xfs_buf.h" |
| #include "xfs_message.h" |
| |
| #ifdef __BIG_ENDIAN |
| #define XFS_NATIVE_HOST 1 |
| #else |
| #undef XFS_NATIVE_HOST |
| #endif |
| |
| #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_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 xfs_eofb_secs xfs_params.eofb_timer.val |
| #define xfs_cowb_secs xfs_params.cowb_timer.val |
| |
| #define current_cpu() (raw_smp_processor_id()) |
| #define current_pid() (current->pid) |
| #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_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 EFSBADCRC EBADMSG /* Bad CRC detected */ |
| |
| #define SYNCHRONIZE() barrier() |
| #define __return_address __builtin_return_address(0) |
| |
| #define XFS_PROJID_DEFAULT 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)) |
| |
| static inline void delay(long ticks) |
| { |
| schedule_timeout_uninterruptible(ticks); |
| } |
| |
| /* |
| * XFS wrapper structure for sysfs support. It depends on external data |
| * structures and is embedded in various internal data structures to implement |
| * the XFS sysfs object heirarchy. Define it here for broad access throughout |
| * the codebase. |
| */ |
| struct xfs_kobj { |
| struct kobject kobject; |
| struct completion complete; |
| }; |
| |
| struct xstats { |
| struct xfsstats __percpu *xs_stats; |
| struct xfs_kobj xs_kobj; |
| }; |
| |
| extern struct xstats xfsstats; |
| |
| /* Kernel uid/gid conversion. These are used to convert to/from the on disk |
| * uid_t/gid_t types to the kuid_t/kgid_t types that the kernel uses internally. |
| * The conversion here is type only, the value will remain the same since we |
| * are converting to the init_user_ns. The uid is later mapped to a particular |
| * user namespace value when crossing the kernel/user boundary. |
| */ |
| static inline __uint32_t xfs_kuid_to_uid(kuid_t uid) |
| { |
| return from_kuid(&init_user_ns, uid); |
| } |
| |
| static inline kuid_t xfs_uid_to_kuid(__uint32_t uid) |
| { |
| return make_kuid(&init_user_ns, uid); |
| } |
| |
| static inline __uint32_t xfs_kgid_to_gid(kgid_t gid) |
| { |
| return from_kgid(&init_user_ns, gid); |
| } |
| |
| static inline kgid_t xfs_gid_to_kgid(__uint32_t gid) |
| { |
| return make_kgid(&init_user_ns, gid); |
| } |
| |
| /* |
| * 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() |
| |
| |
| /* 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; |
| } |
| |
| #define ASSERT_ALWAYS(expr) \ |
| (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
| |
| #ifdef DEBUG |
| #define ASSERT(expr) \ |
| (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
| |
| #ifndef STATIC |
| # define STATIC noinline |
| #endif |
| |
| #else /* !DEBUG */ |
| |
| #ifdef XFS_WARN |
| |
| #define ASSERT(expr) \ |
| (likely(expr) ? (void)0 : asswarn(#expr, __FILE__, __LINE__)) |
| |
| #ifndef STATIC |
| # define STATIC static noinline |
| #endif |
| |
| #else /* !DEBUG && !XFS_WARN */ |
| |
| #define ASSERT(expr) ((void)0) |
| |
| #ifndef STATIC |
| # define STATIC static noinline |
| #endif |
| |
| #endif /* XFS_WARN */ |
| #endif /* DEBUG */ |
| |
| #ifdef CONFIG_XFS_RT |
| |
| /* |
| * make sure we ignore the inode flag if the filesystem doesn't have a |
| * configured realtime device. |
| */ |
| #define XFS_IS_REALTIME_INODE(ip) \ |
| (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) && \ |
| (ip)->i_mount->m_rtdev_targp) |
| #else |
| #define XFS_IS_REALTIME_INODE(ip) (0) |
| #endif |
| |
| #endif /* __XFS_LINUX__ */ |