diff options
Diffstat (limited to 'meta-filesystems/recipes-utils/aufs-util/aufs-util/aufs_type.h')
| -rw-r--r-- | meta-filesystems/recipes-utils/aufs-util/aufs-util/aufs_type.h | 419 |
1 files changed, 0 insertions, 419 deletions
diff --git a/meta-filesystems/recipes-utils/aufs-util/aufs-util/aufs_type.h b/meta-filesystems/recipes-utils/aufs-util/aufs-util/aufs_type.h deleted file mode 100644 index c948033a4c..0000000000 --- a/meta-filesystems/recipes-utils/aufs-util/aufs-util/aufs_type.h +++ /dev/null @@ -1,419 +0,0 @@ -/* - * Copyright (C) 2005-2015 Junjiro R. Okajima - * - * This program, aufs 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; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will 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, see <http://www.gnu.org/licenses/>. - */ - -#ifndef __AUFS_TYPE_H__ -#define __AUFS_TYPE_H__ - -#define AUFS_NAME "aufs" - -#ifdef __KERNEL__ -/* - * define it before including all other headers. - * sched.h may use pr_* macros before defining "current", so define the - * no-current version first, and re-define later. - */ -#define pr_fmt(fmt) AUFS_NAME " %s:%d: " fmt, __func__, __LINE__ -#include <linux/sched.h> -#undef pr_fmt -#define pr_fmt(fmt) \ - AUFS_NAME " %s:%d:%.*s[%d]: " fmt, __func__, __LINE__, \ - (int)sizeof(current->comm), current->comm, current->pid -#else -#include <stdint.h> -#include <sys/types.h> -#endif /* __KERNEL__ */ - -#include <linux/limits.h> - -#define AUFS_VERSION "3.18-20150406" - -/* todo? move this to linux-2.6.19/include/magic.h */ -#define AUFS_SUPER_MAGIC ('a' << 24 | 'u' << 16 | 'f' << 8 | 's') - -/* ---------------------------------------------------------------------- */ - -#ifdef CONFIG_AUFS_BRANCH_MAX_127 -typedef int8_t aufs_bindex_t; -#define AUFS_BRANCH_MAX 127 -#else -typedef int16_t aufs_bindex_t; -#ifdef CONFIG_AUFS_BRANCH_MAX_511 -#define AUFS_BRANCH_MAX 511 -#elif defined(CONFIG_AUFS_BRANCH_MAX_1023) -#define AUFS_BRANCH_MAX 1023 -#elif defined(CONFIG_AUFS_BRANCH_MAX_32767) -#define AUFS_BRANCH_MAX 32767 -#endif -#endif - -#ifdef __KERNEL__ -#ifndef AUFS_BRANCH_MAX -#error unknown CONFIG_AUFS_BRANCH_MAX value -#endif -#endif /* __KERNEL__ */ - -/* ---------------------------------------------------------------------- */ - -#define AUFS_FSTYPE AUFS_NAME - -#define AUFS_ROOT_INO 2 -#define AUFS_FIRST_INO 11 - -#define AUFS_WH_PFX ".wh." -#define AUFS_WH_PFX_LEN ((int)sizeof(AUFS_WH_PFX) - 1) -#define AUFS_WH_TMP_LEN 4 -/* a limit for rmdir/rename a dir and copyup */ -#define AUFS_MAX_NAMELEN (NAME_MAX \ - - AUFS_WH_PFX_LEN * 2 /* doubly whiteouted */\ - - 1 /* dot */\ - - AUFS_WH_TMP_LEN) /* hex */ -#define AUFS_XINO_FNAME "." AUFS_NAME ".xino" -#define AUFS_XINO_DEFPATH "/tmp/" AUFS_XINO_FNAME -#define AUFS_XINO_DEF_SEC 30 /* seconds */ -#define AUFS_XINO_DEF_TRUNC 45 /* percentage */ -#define AUFS_DIRWH_DEF 3 -#define AUFS_RDCACHE_DEF 10 /* seconds */ -#define AUFS_RDCACHE_MAX 3600 /* seconds */ -#define AUFS_RDBLK_DEF 512 /* bytes */ -#define AUFS_RDHASH_DEF 32 -#define AUFS_WKQ_NAME AUFS_NAME "d" -#define AUFS_MFS_DEF_SEC 30 /* seconds */ -#define AUFS_MFS_MAX_SEC 3600 /* seconds */ -#define AUFS_FHSM_CACHE_DEF_SEC 30 /* seconds */ -#define AUFS_PLINK_WARN 50 /* number of plinks in a single bucket */ - -/* pseudo-link maintenace under /proc */ -#define AUFS_PLINK_MAINT_NAME "plink_maint" -#define AUFS_PLINK_MAINT_DIR "fs/" AUFS_NAME -#define AUFS_PLINK_MAINT_PATH AUFS_PLINK_MAINT_DIR "/" AUFS_PLINK_MAINT_NAME - -#define AUFS_DIROPQ_NAME AUFS_WH_PFX ".opq" /* whiteouted doubly */ -#define AUFS_WH_DIROPQ AUFS_WH_PFX AUFS_DIROPQ_NAME - -#define AUFS_BASE_NAME AUFS_WH_PFX AUFS_NAME -#define AUFS_PLINKDIR_NAME AUFS_WH_PFX "plnk" -#define AUFS_ORPHDIR_NAME AUFS_WH_PFX "orph" - -/* doubly whiteouted */ -#define AUFS_WH_BASE AUFS_WH_PFX AUFS_BASE_NAME -#define AUFS_WH_PLINKDIR AUFS_WH_PFX AUFS_PLINKDIR_NAME -#define AUFS_WH_ORPHDIR AUFS_WH_PFX AUFS_ORPHDIR_NAME - -/* branch permissions and attributes */ -#define AUFS_BRPERM_RW "rw" -#define AUFS_BRPERM_RO "ro" -#define AUFS_BRPERM_RR "rr" -#define AUFS_BRATTR_COO_REG "coo_reg" -#define AUFS_BRATTR_COO_ALL "coo_all" -#define AUFS_BRATTR_FHSM "fhsm" -#define AUFS_BRATTR_UNPIN "unpin" -#define AUFS_BRATTR_ICEX "icex" -#define AUFS_BRATTR_ICEX_SEC "icexsec" -#define AUFS_BRATTR_ICEX_SYS "icexsys" -#define AUFS_BRATTR_ICEX_TR "icextr" -#define AUFS_BRATTR_ICEX_USR "icexusr" -#define AUFS_BRATTR_ICEX_OTH "icexoth" -#define AUFS_BRRATTR_WH "wh" -#define AUFS_BRWATTR_NLWH "nolwh" -#define AUFS_BRWATTR_MOO "moo" - -#define AuBrPerm_RW 1 /* writable, hardlinkable wh */ -#define AuBrPerm_RO (1 << 1) /* readonly */ -#define AuBrPerm_RR (1 << 2) /* natively readonly */ -#define AuBrPerm_Mask (AuBrPerm_RW | AuBrPerm_RO | AuBrPerm_RR) - -#define AuBrAttr_COO_REG (1 << 3) /* copy-up on open */ -#define AuBrAttr_COO_ALL (1 << 4) -#define AuBrAttr_COO_Mask (AuBrAttr_COO_REG | AuBrAttr_COO_ALL) - -#define AuBrAttr_FHSM (1 << 5) /* file-based hsm */ -#define AuBrAttr_UNPIN (1 << 6) /* rename-able top dir of - branch. meaningless since - linux-3.18-rc1 */ - -/* ignore error in copying XATTR */ -#define AuBrAttr_ICEX_SEC (1 << 7) -#define AuBrAttr_ICEX_SYS (1 << 8) -#define AuBrAttr_ICEX_TR (1 << 9) -#define AuBrAttr_ICEX_USR (1 << 10) -#define AuBrAttr_ICEX_OTH (1 << 11) -#define AuBrAttr_ICEX (AuBrAttr_ICEX_SEC \ - | AuBrAttr_ICEX_SYS \ - | AuBrAttr_ICEX_TR \ - | AuBrAttr_ICEX_USR \ - | AuBrAttr_ICEX_OTH) - -#define AuBrRAttr_WH (1 << 12) /* whiteout-able */ -#define AuBrRAttr_Mask AuBrRAttr_WH - -#define AuBrWAttr_NoLinkWH (1 << 13) /* un-hardlinkable whiteouts */ -#define AuBrWAttr_MOO (1 << 14) /* move-up on open */ -#define AuBrWAttr_Mask (AuBrWAttr_NoLinkWH | AuBrWAttr_MOO) - -#define AuBrAttr_CMOO_Mask (AuBrAttr_COO_Mask | AuBrWAttr_MOO) - -/* #warning test userspace */ -#ifdef __KERNEL__ -#ifndef CONFIG_AUFS_FHSM -#undef AuBrAttr_FHSM -#define AuBrAttr_FHSM 0 -#endif -#ifndef CONFIG_AUFS_XATTR -#undef AuBrAttr_ICEX -#define AuBrAttr_ICEX 0 -#undef AuBrAttr_ICEX_SEC -#define AuBrAttr_ICEX_SEC 0 -#undef AuBrAttr_ICEX_SYS -#define AuBrAttr_ICEX_SYS 0 -#undef AuBrAttr_ICEX_TR -#define AuBrAttr_ICEX_TR 0 -#undef AuBrAttr_ICEX_USR -#define AuBrAttr_ICEX_USR 0 -#undef AuBrAttr_ICEX_OTH -#define AuBrAttr_ICEX_OTH 0 -#endif -#endif - -/* the longest combination */ -/* AUFS_BRATTR_ICEX and AUFS_BRATTR_ICEX_TR don't affect here */ -#define AuBrPermStrSz sizeof(AUFS_BRPERM_RW \ - "+" AUFS_BRATTR_COO_REG \ - "+" AUFS_BRATTR_FHSM \ - "+" AUFS_BRATTR_UNPIN \ - "+" AUFS_BRATTR_ICEX_SEC \ - "+" AUFS_BRATTR_ICEX_SYS \ - "+" AUFS_BRATTR_ICEX_USR \ - "+" AUFS_BRATTR_ICEX_OTH \ - "+" AUFS_BRWATTR_NLWH) - -typedef struct { - char a[AuBrPermStrSz]; -} au_br_perm_str_t; - -static inline int au_br_writable(int brperm) -{ - return brperm & AuBrPerm_RW; -} - -static inline int au_br_whable(int brperm) -{ - return brperm & (AuBrPerm_RW | AuBrRAttr_WH); -} - -static inline int au_br_wh_linkable(int brperm) -{ - return !(brperm & AuBrWAttr_NoLinkWH); -} - -static inline int au_br_cmoo(int brperm) -{ - return brperm & AuBrAttr_CMOO_Mask; -} - -static inline int au_br_fhsm(int brperm) -{ - return brperm & AuBrAttr_FHSM; -} - -/* ---------------------------------------------------------------------- */ - -/* ioctl */ -enum { - /* readdir in userspace */ - AuCtl_RDU, - AuCtl_RDU_INO, - - AuCtl_WBR_FD, /* pathconf wrapper */ - AuCtl_IBUSY, /* busy inode */ - AuCtl_MVDOWN, /* move-down */ - AuCtl_BR, /* info about branches */ - AuCtl_FHSM_FD /* connection for fhsm */ -}; - -/* borrowed from linux/include/linux/kernel.h */ -#ifndef ALIGN -#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1) -#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask)) -#endif - -/* borrowed from linux/include/linux/compiler-gcc3.h */ -#ifndef __aligned -#define __aligned(x) __attribute__((aligned(x))) -#endif - -#ifdef __KERNEL__ -#ifndef __packed -#define __packed __attribute__((packed)) -#endif -#endif - -struct au_rdu_cookie { - uint64_t h_pos; - int16_t bindex; - uint8_t flags; - uint8_t pad; - uint32_t generation; -} __aligned(8); - -struct au_rdu_ent { - uint64_t ino; - int16_t bindex; - uint8_t type; - uint8_t nlen; - uint8_t wh; - char name[0]; -} __aligned(8); - -static inline int au_rdu_len(int nlen) -{ - /* include the terminating NULL */ - return ALIGN(sizeof(struct au_rdu_ent) + nlen + 1, - sizeof(uint64_t)); -} - -union au_rdu_ent_ul { - struct au_rdu_ent *e; - uint64_t ul; -}; - -enum { - AufsCtlRduV_SZ, - AufsCtlRduV_End -}; - -struct aufs_rdu { - /* input */ - union { - uint64_t sz; /* AuCtl_RDU */ - uint64_t nent; /* AuCtl_RDU_INO */ - }; - union au_rdu_ent_ul ent; - uint16_t verify[AufsCtlRduV_End]; - - /* input/output */ - uint32_t blk; - - /* output */ - union au_rdu_ent_ul tail; - /* number of entries which were added in a single call */ - uint64_t rent; - uint8_t full; - uint8_t shwh; - - struct au_rdu_cookie cookie; -} __aligned(8); - -/* ---------------------------------------------------------------------- */ - -struct aufs_wbr_fd { - uint32_t oflags; - int16_t brid; -} __aligned(8); - -/* ---------------------------------------------------------------------- */ - -struct aufs_ibusy { - uint64_t ino, h_ino; - int16_t bindex; -} __aligned(8); - -/* ---------------------------------------------------------------------- */ - -/* error code for move-down */ -/* the actual message strings are implemented in aufs-util.git */ -enum { - EAU_MVDOWN_OPAQUE = 1, - EAU_MVDOWN_WHITEOUT, - EAU_MVDOWN_UPPER, - EAU_MVDOWN_BOTTOM, - EAU_MVDOWN_NOUPPER, - EAU_MVDOWN_NOLOWERBR, - EAU_Last -}; - -/* flags for move-down */ -#define AUFS_MVDOWN_DMSG 1 -#define AUFS_MVDOWN_OWLOWER (1 << 1) /* overwrite lower */ -#define AUFS_MVDOWN_KUPPER (1 << 2) /* keep upper */ -#define AUFS_MVDOWN_ROLOWER (1 << 3) /* do even if lower is RO */ -#define AUFS_MVDOWN_ROLOWER_R (1 << 4) /* did on lower RO */ -#define AUFS_MVDOWN_ROUPPER (1 << 5) /* do even if upper is RO */ -#define AUFS_MVDOWN_ROUPPER_R (1 << 6) /* did on upper RO */ -#define AUFS_MVDOWN_BRID_UPPER (1 << 7) /* upper brid */ -#define AUFS_MVDOWN_BRID_LOWER (1 << 8) /* lower brid */ -#define AUFS_MVDOWN_FHSM_LOWER (1 << 9) /* find fhsm attr for lower */ -#define AUFS_MVDOWN_STFS (1 << 10) /* req. stfs */ -#define AUFS_MVDOWN_STFS_FAILED (1 << 11) /* output: stfs is unusable */ -#define AUFS_MVDOWN_BOTTOM (1 << 12) /* output: no more lowers */ - -/* index for move-down */ -enum { - AUFS_MVDOWN_UPPER, - AUFS_MVDOWN_LOWER, - AUFS_MVDOWN_NARRAY -}; - -/* - * additional info of move-down - * number of free blocks and inodes. - * subset of struct kstatfs, but smaller and always 64bit. - */ -struct aufs_stfs { - uint64_t f_blocks; - uint64_t f_bavail; - uint64_t f_files; - uint64_t f_ffree; -}; - -struct aufs_stbr { - int16_t brid; /* optional input */ - int16_t bindex; /* output */ - struct aufs_stfs stfs; /* output when AUFS_MVDOWN_STFS set */ -} __aligned(8); - -struct aufs_mvdown { - uint32_t flags; /* input/output */ - struct aufs_stbr stbr[AUFS_MVDOWN_NARRAY]; /* input/output */ - int8_t au_errno; /* output */ -} __aligned(8); - -/* ---------------------------------------------------------------------- */ - -union aufs_brinfo { - /* PATH_MAX may differ between kernel-space and user-space */ - char _spacer[4096]; - struct { - int16_t id; - int perm; - char path[0]; - }; -} __aligned(8); - -/* ---------------------------------------------------------------------- */ - -#define AuCtlType 'A' -#define AUFS_CTL_RDU _IOWR(AuCtlType, AuCtl_RDU, struct aufs_rdu) -#define AUFS_CTL_RDU_INO _IOWR(AuCtlType, AuCtl_RDU_INO, struct aufs_rdu) -#define AUFS_CTL_WBR_FD _IOW(AuCtlType, AuCtl_WBR_FD, \ - struct aufs_wbr_fd) -#define AUFS_CTL_IBUSY _IOWR(AuCtlType, AuCtl_IBUSY, struct aufs_ibusy) -#define AUFS_CTL_MVDOWN _IOWR(AuCtlType, AuCtl_MVDOWN, \ - struct aufs_mvdown) -#define AUFS_CTL_BRINFO _IOW(AuCtlType, AuCtl_BR, union aufs_brinfo) -#define AUFS_CTL_FHSM_FD _IOW(AuCtlType, AuCtl_FHSM_FD, int) - -#endif /* __AUFS_TYPE_H__ */ |