kernel-lts.guncellendi
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419
talimatname/temel-ek/kernel-lts/aufs_type.h
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talimatname/temel-ek/kernel-lts/aufs_type.h
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/*
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* Copyright (C) 2005-2016 Junjiro R. Okajima
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*
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* This program, aufs is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __AUFS_TYPE_H__
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#define __AUFS_TYPE_H__
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#define AUFS_NAME "aufs"
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#ifdef __KERNEL__
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/*
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* define it before including all other headers.
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* sched.h may use pr_* macros before defining "current", so define the
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* no-current version first, and re-define later.
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*/
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#define pr_fmt(fmt) AUFS_NAME " %s:%d: " fmt, __func__, __LINE__
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#include <linux/sched.h>
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#undef pr_fmt
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#define pr_fmt(fmt) \
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AUFS_NAME " %s:%d:%.*s[%d]: " fmt, __func__, __LINE__, \
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(int)sizeof(current->comm), current->comm, current->pid
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#else
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#include <stdint.h>
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#include <sys/types.h>
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#endif /* __KERNEL__ */
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#include <linux/limits.h>
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#define AUFS_VERSION "4.4-20160912"
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/* todo? move this to linux-2.6.19/include/magic.h */
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#define AUFS_SUPER_MAGIC ('a' << 24 | 'u' << 16 | 'f' << 8 | 's')
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/* ---------------------------------------------------------------------- */
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#ifdef CONFIG_AUFS_BRANCH_MAX_127
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typedef int8_t aufs_bindex_t;
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#define AUFS_BRANCH_MAX 127
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#else
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typedef int16_t aufs_bindex_t;
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#ifdef CONFIG_AUFS_BRANCH_MAX_511
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#define AUFS_BRANCH_MAX 511
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#elif defined(CONFIG_AUFS_BRANCH_MAX_1023)
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#define AUFS_BRANCH_MAX 1023
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#elif defined(CONFIG_AUFS_BRANCH_MAX_32767)
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#define AUFS_BRANCH_MAX 32767
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#endif
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#endif
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#ifdef __KERNEL__
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#ifndef AUFS_BRANCH_MAX
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#error unknown CONFIG_AUFS_BRANCH_MAX value
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#endif
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#endif /* __KERNEL__ */
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/* ---------------------------------------------------------------------- */
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#define AUFS_FSTYPE AUFS_NAME
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#define AUFS_ROOT_INO 2
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#define AUFS_FIRST_INO 11
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#define AUFS_WH_PFX ".wh."
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#define AUFS_WH_PFX_LEN ((int)sizeof(AUFS_WH_PFX) - 1)
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#define AUFS_WH_TMP_LEN 4
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/* a limit for rmdir/rename a dir and copyup */
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#define AUFS_MAX_NAMELEN (NAME_MAX \
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- AUFS_WH_PFX_LEN * 2 /* doubly whiteouted */\
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- 1 /* dot */\
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- AUFS_WH_TMP_LEN) /* hex */
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#define AUFS_XINO_FNAME "." AUFS_NAME ".xino"
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#define AUFS_XINO_DEFPATH "/tmp/" AUFS_XINO_FNAME
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#define AUFS_XINO_DEF_SEC 30 /* seconds */
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#define AUFS_XINO_DEF_TRUNC 45 /* percentage */
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#define AUFS_DIRWH_DEF 3
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#define AUFS_RDCACHE_DEF 10 /* seconds */
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#define AUFS_RDCACHE_MAX 3600 /* seconds */
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#define AUFS_RDBLK_DEF 512 /* bytes */
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#define AUFS_RDHASH_DEF 32
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#define AUFS_WKQ_NAME AUFS_NAME "d"
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#define AUFS_MFS_DEF_SEC 30 /* seconds */
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#define AUFS_MFS_MAX_SEC 3600 /* seconds */
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#define AUFS_FHSM_CACHE_DEF_SEC 30 /* seconds */
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#define AUFS_PLINK_WARN 50 /* number of plinks in a single bucket */
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/* pseudo-link maintenace under /proc */
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#define AUFS_PLINK_MAINT_NAME "plink_maint"
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#define AUFS_PLINK_MAINT_DIR "fs/" AUFS_NAME
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#define AUFS_PLINK_MAINT_PATH AUFS_PLINK_MAINT_DIR "/" AUFS_PLINK_MAINT_NAME
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#define AUFS_DIROPQ_NAME AUFS_WH_PFX ".opq" /* whiteouted doubly */
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#define AUFS_WH_DIROPQ AUFS_WH_PFX AUFS_DIROPQ_NAME
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#define AUFS_BASE_NAME AUFS_WH_PFX AUFS_NAME
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#define AUFS_PLINKDIR_NAME AUFS_WH_PFX "plnk"
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#define AUFS_ORPHDIR_NAME AUFS_WH_PFX "orph"
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/* doubly whiteouted */
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#define AUFS_WH_BASE AUFS_WH_PFX AUFS_BASE_NAME
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#define AUFS_WH_PLINKDIR AUFS_WH_PFX AUFS_PLINKDIR_NAME
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#define AUFS_WH_ORPHDIR AUFS_WH_PFX AUFS_ORPHDIR_NAME
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/* branch permissions and attributes */
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#define AUFS_BRPERM_RW "rw"
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#define AUFS_BRPERM_RO "ro"
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#define AUFS_BRPERM_RR "rr"
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#define AUFS_BRATTR_COO_REG "coo_reg"
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#define AUFS_BRATTR_COO_ALL "coo_all"
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#define AUFS_BRATTR_FHSM "fhsm"
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#define AUFS_BRATTR_UNPIN "unpin"
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#define AUFS_BRATTR_ICEX "icex"
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#define AUFS_BRATTR_ICEX_SEC "icexsec"
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#define AUFS_BRATTR_ICEX_SYS "icexsys"
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#define AUFS_BRATTR_ICEX_TR "icextr"
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#define AUFS_BRATTR_ICEX_USR "icexusr"
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#define AUFS_BRATTR_ICEX_OTH "icexoth"
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#define AUFS_BRRATTR_WH "wh"
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#define AUFS_BRWATTR_NLWH "nolwh"
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#define AUFS_BRWATTR_MOO "moo"
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#define AuBrPerm_RW 1 /* writable, hardlinkable wh */
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#define AuBrPerm_RO (1 << 1) /* readonly */
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#define AuBrPerm_RR (1 << 2) /* natively readonly */
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#define AuBrPerm_Mask (AuBrPerm_RW | AuBrPerm_RO | AuBrPerm_RR)
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#define AuBrAttr_COO_REG (1 << 3) /* copy-up on open */
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#define AuBrAttr_COO_ALL (1 << 4)
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#define AuBrAttr_COO_Mask (AuBrAttr_COO_REG | AuBrAttr_COO_ALL)
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#define AuBrAttr_FHSM (1 << 5) /* file-based hsm */
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#define AuBrAttr_UNPIN (1 << 6) /* rename-able top dir of
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branch. meaningless since
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linux-3.18-rc1 */
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/* ignore error in copying XATTR */
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#define AuBrAttr_ICEX_SEC (1 << 7)
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#define AuBrAttr_ICEX_SYS (1 << 8)
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#define AuBrAttr_ICEX_TR (1 << 9)
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#define AuBrAttr_ICEX_USR (1 << 10)
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#define AuBrAttr_ICEX_OTH (1 << 11)
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#define AuBrAttr_ICEX (AuBrAttr_ICEX_SEC \
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| AuBrAttr_ICEX_SYS \
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| AuBrAttr_ICEX_TR \
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| AuBrAttr_ICEX_USR \
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| AuBrAttr_ICEX_OTH)
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#define AuBrRAttr_WH (1 << 12) /* whiteout-able */
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#define AuBrRAttr_Mask AuBrRAttr_WH
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#define AuBrWAttr_NoLinkWH (1 << 13) /* un-hardlinkable whiteouts */
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#define AuBrWAttr_MOO (1 << 14) /* move-up on open */
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#define AuBrWAttr_Mask (AuBrWAttr_NoLinkWH | AuBrWAttr_MOO)
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#define AuBrAttr_CMOO_Mask (AuBrAttr_COO_Mask | AuBrWAttr_MOO)
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/* #warning test userspace */
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#ifdef __KERNEL__
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#ifndef CONFIG_AUFS_FHSM
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#undef AuBrAttr_FHSM
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#define AuBrAttr_FHSM 0
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#endif
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#ifndef CONFIG_AUFS_XATTR
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#undef AuBrAttr_ICEX
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#define AuBrAttr_ICEX 0
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#undef AuBrAttr_ICEX_SEC
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#define AuBrAttr_ICEX_SEC 0
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#undef AuBrAttr_ICEX_SYS
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#define AuBrAttr_ICEX_SYS 0
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#undef AuBrAttr_ICEX_TR
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#define AuBrAttr_ICEX_TR 0
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#undef AuBrAttr_ICEX_USR
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#define AuBrAttr_ICEX_USR 0
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#undef AuBrAttr_ICEX_OTH
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#define AuBrAttr_ICEX_OTH 0
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#endif
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#endif
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/* the longest combination */
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/* AUFS_BRATTR_ICEX and AUFS_BRATTR_ICEX_TR don't affect here */
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#define AuBrPermStrSz sizeof(AUFS_BRPERM_RW \
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"+" AUFS_BRATTR_COO_REG \
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"+" AUFS_BRATTR_FHSM \
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"+" AUFS_BRATTR_UNPIN \
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"+" AUFS_BRATTR_ICEX_SEC \
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"+" AUFS_BRATTR_ICEX_SYS \
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"+" AUFS_BRATTR_ICEX_USR \
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"+" AUFS_BRATTR_ICEX_OTH \
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"+" AUFS_BRWATTR_NLWH)
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typedef struct {
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char a[AuBrPermStrSz];
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} au_br_perm_str_t;
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static inline int au_br_writable(int brperm)
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{
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return brperm & AuBrPerm_RW;
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}
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static inline int au_br_whable(int brperm)
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{
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return brperm & (AuBrPerm_RW | AuBrRAttr_WH);
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}
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static inline int au_br_wh_linkable(int brperm)
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{
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return !(brperm & AuBrWAttr_NoLinkWH);
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}
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static inline int au_br_cmoo(int brperm)
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{
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return brperm & AuBrAttr_CMOO_Mask;
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}
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static inline int au_br_fhsm(int brperm)
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{
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return brperm & AuBrAttr_FHSM;
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}
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/* ---------------------------------------------------------------------- */
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/* ioctl */
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enum {
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/* readdir in userspace */
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AuCtl_RDU,
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AuCtl_RDU_INO,
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AuCtl_WBR_FD, /* pathconf wrapper */
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AuCtl_IBUSY, /* busy inode */
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AuCtl_MVDOWN, /* move-down */
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AuCtl_BR, /* info about branches */
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AuCtl_FHSM_FD /* connection for fhsm */
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};
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/* borrowed from linux/include/linux/kernel.h */
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#ifndef ALIGN
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#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1)
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#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
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#endif
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/* borrowed from linux/include/linux/compiler-gcc3.h */
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#ifndef __aligned
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#define __aligned(x) __attribute__((aligned(x)))
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#endif
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#ifdef __KERNEL__
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#ifndef __packed
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#define __packed __attribute__((packed))
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#endif
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#endif
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struct au_rdu_cookie {
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uint64_t h_pos;
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int16_t bindex;
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uint8_t flags;
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uint8_t pad;
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uint32_t generation;
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} __aligned(8);
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struct au_rdu_ent {
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uint64_t ino;
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int16_t bindex;
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uint8_t type;
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uint8_t nlen;
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uint8_t wh;
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char name[0];
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} __aligned(8);
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static inline int au_rdu_len(int nlen)
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{
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/* include the terminating NULL */
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return ALIGN(sizeof(struct au_rdu_ent) + nlen + 1,
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sizeof(uint64_t));
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}
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union au_rdu_ent_ul {
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struct au_rdu_ent *e;
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uint64_t ul;
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};
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enum {
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AufsCtlRduV_SZ,
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AufsCtlRduV_End
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};
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struct aufs_rdu {
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/* input */
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union {
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uint64_t sz; /* AuCtl_RDU */
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uint64_t nent; /* AuCtl_RDU_INO */
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};
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union au_rdu_ent_ul ent;
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uint16_t verify[AufsCtlRduV_End];
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/* input/output */
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uint32_t blk;
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/* output */
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union au_rdu_ent_ul tail;
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/* number of entries which were added in a single call */
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uint64_t rent;
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uint8_t full;
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uint8_t shwh;
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struct au_rdu_cookie cookie;
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} __aligned(8);
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/* ---------------------------------------------------------------------- */
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struct aufs_wbr_fd {
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uint32_t oflags;
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int16_t brid;
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} __aligned(8);
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/* ---------------------------------------------------------------------- */
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struct aufs_ibusy {
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uint64_t ino, h_ino;
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int16_t bindex;
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} __aligned(8);
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/* ---------------------------------------------------------------------- */
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/* error code for move-down */
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/* the actual message strings are implemented in aufs-util.git */
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enum {
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EAU_MVDOWN_OPAQUE = 1,
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EAU_MVDOWN_WHITEOUT,
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EAU_MVDOWN_UPPER,
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EAU_MVDOWN_BOTTOM,
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EAU_MVDOWN_NOUPPER,
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EAU_MVDOWN_NOLOWERBR,
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EAU_Last
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};
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/* flags for move-down */
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#define AUFS_MVDOWN_DMSG 1
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#define AUFS_MVDOWN_OWLOWER (1 << 1) /* overwrite lower */
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#define AUFS_MVDOWN_KUPPER (1 << 2) /* keep upper */
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#define AUFS_MVDOWN_ROLOWER (1 << 3) /* do even if lower is RO */
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#define AUFS_MVDOWN_ROLOWER_R (1 << 4) /* did on lower RO */
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#define AUFS_MVDOWN_ROUPPER (1 << 5) /* do even if upper is RO */
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#define AUFS_MVDOWN_ROUPPER_R (1 << 6) /* did on upper RO */
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#define AUFS_MVDOWN_BRID_UPPER (1 << 7) /* upper brid */
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#define AUFS_MVDOWN_BRID_LOWER (1 << 8) /* lower brid */
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#define AUFS_MVDOWN_FHSM_LOWER (1 << 9) /* find fhsm attr for lower */
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#define AUFS_MVDOWN_STFS (1 << 10) /* req. stfs */
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#define AUFS_MVDOWN_STFS_FAILED (1 << 11) /* output: stfs is unusable */
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#define AUFS_MVDOWN_BOTTOM (1 << 12) /* output: no more lowers */
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/* index for move-down */
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enum {
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AUFS_MVDOWN_UPPER,
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AUFS_MVDOWN_LOWER,
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AUFS_MVDOWN_NARRAY
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};
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/*
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* additional info of move-down
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* number of free blocks and inodes.
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* subset of struct kstatfs, but smaller and always 64bit.
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*/
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struct aufs_stfs {
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uint64_t f_blocks;
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uint64_t f_bavail;
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uint64_t f_files;
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uint64_t f_ffree;
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};
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struct aufs_stbr {
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int16_t brid; /* optional input */
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int16_t bindex; /* output */
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struct aufs_stfs stfs; /* output when AUFS_MVDOWN_STFS set */
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} __aligned(8);
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struct aufs_mvdown {
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uint32_t flags; /* input/output */
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struct aufs_stbr stbr[AUFS_MVDOWN_NARRAY]; /* input/output */
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int8_t au_errno; /* output */
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} __aligned(8);
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/* ---------------------------------------------------------------------- */
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union aufs_brinfo {
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/* PATH_MAX may differ between kernel-space and user-space */
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char _spacer[4096];
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struct {
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int16_t id;
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int perm;
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char path[0];
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};
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} __aligned(8);
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/* ---------------------------------------------------------------------- */
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#define AuCtlType 'A'
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#define AUFS_CTL_RDU _IOWR(AuCtlType, AuCtl_RDU, struct aufs_rdu)
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#define AUFS_CTL_RDU_INO _IOWR(AuCtlType, AuCtl_RDU_INO, struct aufs_rdu)
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#define AUFS_CTL_WBR_FD _IOW(AuCtlType, AuCtl_WBR_FD, \
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struct aufs_wbr_fd)
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#define AUFS_CTL_IBUSY _IOWR(AuCtlType, AuCtl_IBUSY, struct aufs_ibusy)
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#define AUFS_CTL_MVDOWN _IOWR(AuCtlType, AuCtl_MVDOWN, \
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struct aufs_mvdown)
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#define AUFS_CTL_BRINFO _IOW(AuCtlType, AuCtl_BR, union aufs_brinfo)
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#define AUFS_CTL_FHSM_FD _IOW(AuCtlType, AuCtl_FHSM_FD, int)
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#endif /* __AUFS_TYPE_H__ */
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@ -45,6 +45,7 @@ aufs4.4-20160912.patch
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lockdep-debug.patch
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tmpfs-idr.patch
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vfs-ino.patch
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aufs_type.h
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$name.config $name.config_64)
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## Time to build everything
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@ -145,6 +146,8 @@ done
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# depmod needed
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depmod -b $PKG -a ${KERNEL_VERSION}
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install -D -m 644 $SRC/aufs_type.h "${PKG}/usr/include/linux/aufs_type.h
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# Install config and kernel files
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cd $SRC/linux-${_version}
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