+++ /dev/null
-// $Id: vserver-internal.h 2589 2007-08-16 03:06:50Z dhozac $ --*- c++ -*--
-
-// Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
-//
-// 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; version 2 of the License.
-//
-// 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, write to the Free Software
-// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-#ifdef H_VSERVER_SYSCALL_INTERNAL_H
-# error vserver-internal.h must not be included more than once
-#endif
-
-#ifndef H_VSERVER_SYSCALL_INTERNAL_H
-#define H_VSERVER_SYSCALL_INTERNAL_H
-
-#include <asm/unistd.h>
-#include <errno.h>
-#include <stdint.h>
-#include <unistd.h>
-
-#include "internal.h"
-#include "syscall-wrap.h"
-
-#if !defined(__NR_vserver) && defined(ENSC_SYSCALL__NR_vserver)
-# define __NR_vserver ENSC_SYSCALL__NR_vserver
-#endif
-
-inline static ALWAYSINLINE void vc_noop0() {}
-
-#define VC_PREFIX 0)
-#define VC_SUFFIX else (void)(vc_noop0()
-#define CALL_VC_NOOP vc_noop0()
-#define CALL_VC_GENERAL(ID, SUFFIX, FUNC, ...) \
- VC_PREFIX; VC_SELECT(ID) return FUNC ## _ ## SUFFIX(__VA_ARGS__); VC_SUFFIX
-#define CALL_VC_GENERAL_CONFIG(BIT, SUFFIX, FUNC, ...) \
- VC_PREFIX; VC_CBIT(BIT) return FUNC ## _ ## SUFFIX(__VA_ARGS__); VC_SUFFIX
-
-#ifdef VC_MULTIVERSION_SYSCALL
-# define VC_SELECT(ID) if (ver>=(ID))
-# define VC_CBIT(BIT) if ((conf&BIT) == BIT)
-# define CALL_VC(...) \
- do { \
- int ver = utilvserver_checkCompatVersion(); \
- vc_vci_t UNUSED conf = utilvserver_checkCompatConfig(); \
- if (ver==-1) return -1; \
- VC_SUFFIX, __VA_ARGS__, VC_PREFIX; \
- errno = ENOSYS; \
- return -1; \
- } while (0)
-#else
-# define VC_SELECT(ID) if (1)
-# define VC_CBIT(BIT) if (1)
-# define CALL_VC(...) \
- do { \
- if (1) {} VC_SUFFIX, __VA_ARGS__, VC_PREFIX; \
- errno = ENOSYS; return -1; \
- } while (0)
-#endif
-
-#ifdef VC_ENABLE_API_COMPAT
-# define CALL_VC_COMPAT(F,...) CALL_VC_GENERAL(0x00010000, compat, F, __VA_ARGS__)
-#else
-# define CALL_VC_COMPAT(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_LEGACY
-# define CALL_VC_LEGACY(F,...) CALL_VC_GENERAL(0x00000000, legacy, F, __VA_ARGS__)
-#else
-# define CALL_VC_LEGACY(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_V11
-# define CALL_VC_V11(F,...) CALL_VC_GENERAL(0x00010000, v11, F, __VA_ARGS__)
-#else
-# define CALL_VC_V11(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_V13
-# define CALL_VC_V13(F,...) CALL_VC_GENERAL(0x00010011, v13, F, __VA_ARGS__)
-#else
-# define CALL_VC_V13(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_V13
-# define CALL_VC_V13A(F,...) CALL_VC_GENERAL(0x00010012, v13, F, __VA_ARGS__)
-#else
-# define CALL_VC_V13A(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_V13
-# define CALL_VC_V13B(F,...) CALL_VC_GENERAL(0x00010021, v13b, F, __VA_ARGS__)
-#else
-# define CALL_VC_V13B(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_V13OBS
-# define CALL_VC_V13OBS(F,...) CALL_VC_GENERAL(0x00010011, v13obs, F, __VA_ARGS__)
-#else
-# define CALL_VC_V13OBS(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_V21
-# define CALL_VC_V21(F,...) CALL_VC_GENERAL(0x00020100, v21, F, __VA_ARGS__)
-#else
-# define CALL_VC_V21(F,...) CALL_VC_NOOP
-#endif
-
-#if defined(VC_ENABLE_API_V21) || defined(VC_ENABLE_API_V22) || defined(VC_ENABLE_API_V23)
-# define CALL_VC_SPACES(F,...) CALL_VC_GENERAL_CONFIG(VC_VCI_SPACES, spaces, F, __VA_ARGS__)
-#else
-# define CALL_VC_SPACES(F,...) CALL_VC_NOOP
-#endif
-
-#if defined(VC_ENABLE_API_V23)
-# define CALL_VC_TAG(F,...) CALL_VC_GENERAL_CONFIG(VC_VCI_PPTAG, tag, F, __VA_ARGS__)
-#else
-# define CALL_VC_TAG(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_V22
-# define CALL_VC_V22(F,...) CALL_VC_GENERAL(0x00020200, v22, F, __VA_ARGS__)
-#else
-# define CALL_VC_V22(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_V23
-# define CALL_VC_V23(F,...) CALL_VC_GENERAL(0x00020300, v23, F, __VA_ARGS__)
-#else
-# define CALL_VC_V23(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_NET
-# define CALL_VC_NET(F,...) CALL_VC_GENERAL(0x00010016, net, F, __VA_ARGS__)
-#else
-# define CALL_VC_NET(F,...) CALL_VC_NOOP
-#endif
-
-#if defined(VC_ENABLE_API_NETV2)
-# define CALL_VC_NETV2(F,...) CALL_VC_GENERAL_CONFIG(VC_VCI_NETV2, netv2, F, __VA_ARGS__)
-#else
-# define CALL_VC_NETV2(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_FSCOMPAT
-# define CALL_VC_FSCOMPAT(F,...) CALL_VC_GENERAL(0x00010000, fscompat, F, __VA_ARGS__)
-#else
-# define CALL_VC_FSCOMPAT(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_OLDPROC
-# define CALL_VC_OLDPROC(F,...) CALL_VC_GENERAL(0x00000000, oldproc, F, __VA_ARGS__)
-#else
-# define CALL_VC_OLDPROC(F,...) CALL_VC_NOOP
-#endif
-
-#ifdef VC_ENABLE_API_OLDUTS
-# define CALL_VC_OLDUTS(F,...) CALL_VC_GENERAL(0x00000000, olduts, F, __VA_ARGS__)
-#else
-# define CALL_VC_OLDUTS(F,...) CALL_VC_NOOP
-#endif
-
-
- // Some kernel <-> userspace wrappers; they should be noops in most cases
-
-#if 1
-# define CTX_KERNEL2USER(X) (((X)==(uint32_t)(-1)) ? VC_NOCTX : \
- ((X)==(uint32_t)(-2)) ? VC_SAMECTX : \
- (xid_t)(X))
-
-# define CTX_USER2KERNEL(X) (((X)==VC_DYNAMIC_XID) ? (uint32_t)(-1) : \
- ((X)==VC_SAMECTX) ? (uint32_t)(-2) : \
- (uint32_t)(X))
-#else
-# define CTX_USER2KERNEL(X) (X)
-# define CTX_KERNEL2USER(X) (X)
-#endif
-
-#if 1
-# define TAG_KERNEL2USER(X) (((X)==(uint32_t)(-1)) ? VC_NOCTX : \
- ((X)==(uint32_t)(-2)) ? VC_SAMECTX : \
- (tag_t)(X))
-
-# define TAG_USER2KERNEL(X) (((X)==VC_DYNAMIC_XID) ? (uint32_t)(-1) : \
- ((X)==VC_SAMECTX) ? (uint32_t)(-2) : \
- (uint32_t)(X))
-#else
-# define TAG_USER2KERNEL(X) (X)
-# define TAG_KERNEL2USER(X) (X)
-#endif
-
-#if 1
-# define EXT2FLAGS_USER2KERNEL(X) (((X) & ~(VC_IMMUTABLE_FILE_FL|VC_IMMUTABLE_LINK_FL)) | \
- ((X) & VC_IMMUTABLE_FILE_FL ? EXT2_IMMUTABLE_FILE_FL : 0) | \
- ((X) & VC_IMMUTABLE_LINK_FL ? EXT2_IMMUTABLE_LINK_FL : 0))
-# define EXT2FLAGS_KERNEL2USER(X) (((X) & ~(EXT2_IMMUTABLE_FILE_FL|EXT2_IMMUTABLE_LINK_FL)) | \
- ((X) & EXT2_IMMUTABLE_FILE_FL ? VC_IMMUTABLE_FILE_FL : 0) | \
- ((X) & EXT2_IMMUTABLE_LINK_FL ? VC_IMMUTABLE_LINK_FL : 0))
-#else
-# define EXT2FLAGS_KERNEL2USER(X) (X)
-# define EXT2FLAGS_USER2KERNEL(X) (X)
-#endif
-
-#if 1
-# define VHI_USER2KERNEL(X) ((((X)==vcVHI_CONTEXT) ? VHIN_CONTEXT : \
- ((X)==vcVHI_SYSNAME) ? VHIN_SYSNAME : \
- ((X)==vcVHI_NODENAME) ? VHIN_NODENAME : \
- ((X)==vcVHI_RELEASE) ? VHIN_RELEASE : \
- ((X)==vcVHI_VERSION) ? VHIN_VERSION : \
- ((X)==vcVHI_MACHINE) ? VHIN_MACHINE : \
- ((X)==vcVHI_DOMAINNAME) ? VHIN_DOMAINNAME : \
- (X)))
-# define VHI_KERNEL2USER(X) ((((X)==VHIN_CONTEXT) ? vcVHI_CONTEXT : \
- ((X)==VHIN_SYSNAME) ? vcVHI_SYSNAME : \
- ((X)==VHIN_NODENAME) ? vcVHI_NODENAME : \
- ((X)==VHIN_RELEASE) ? vcVHI_RELEASE : \
- ((X)==VHIN_VERSION) ? vcVHI_VERSION : \
- ((X)==VHIN_MACHINE) ? vcVHI_MACHINE : \
- ((X)==VHIN_DOMAINNAME) ? vcVHI_DOMAINNAME : \
- (X)))
-#else
-# define VHI_USER2KERNEL(X) (X)
-# define VHI_KERNEL2USER(X) (X)
-#endif
-
-#if 1
-# define NID_KERNEL2USER(X) (((X)==(uint32_t)(-1)) ? VC_NONID : \
- (xid_t)(X))
-
-# define NID_USER2KERNEL(X) (((X)==VC_DYNAMIC_NID) ? (uint32_t)(-1) : \
- (uint32_t)(X))
-#else
-# define NID_USER2KERNEL(X) (X)
-# define NID_KERNEL2USER(X) (X)
-#endif
-
-#define CDLIM_USER2KERNEL(X) ((X)==VC_CDLIM_UNSET ? CDLIM_UNSET : \
- (X)==VC_CDLIM_INFINITY ? CDLIM_INFINITY : \
- (X)==VC_CDLIM_KEEP ? CDLIM_KEEP : \
- (X))
-
- /// the __typeof__ thing is a hack to deal with the kernel interface
- /// using an unsigned long long value for a uint32_t type
-#define CDLIM_KERNEL2USER(X) ((X)==(__typeof__(X))CDLIM_UNSET ? VC_CDLIM_UNSET : \
- (X)==(__typeof__(X))CDLIM_INFINITY ? VC_CDLIM_INFINITY : \
- (X)==(__typeof__(X))CDLIM_KEEP ? VC_CDLIM_KEEP : \
- (X))
-
-
-#define ENSC_STRUCT_IDX(STRUCT,ATTR) \
- ((char*)(&(STRUCT).ATTR) - (char*)(&(STRUCT)))
-#define ENSC_SAME_STRUCT_IDX(LHS,RHS,ATTR) \
- (ENSC_STRUCT_IDX(LHS,ATTR) == ENSC_STRUCT_IDX(RHS,ATTR))
-#define ENSC_SAME_STRUCT_ITEM(LHS,RHS,ATTR) \
- (ENSC_SAME_STRUCT_IDX(LHS,RHS,ATTR) && \
- sizeof((LHS).ATTR)==sizeof((RHS).ATTR) && \
- sizeof(LHS)==sizeof(RHS))
-
-#define EXT2_IOC_GETCONTEXT _IOR('x', 1, long)
-#define EXT2_IOC_SETCONTEXT _IOW('x', 2, long)
-
-#ifndef HAVE_VSERVER
-#ifdef ENSC_SYSCALL_TRADITIONAL
-inline static UNUSED ALWAYSINLINE
-int vserver(uint32_t cmd, uint32_t id, void *data)
-{
- return syscall(__NR_vserver, cmd, id, data);
-}
-#else
-inline static UNUSED ALWAYSINLINE
-_syscall3(int, vserver,
- uint32_t, cmd, uint32_t, id, void *, data)
-#endif
-#endif
-
-#endif // H_VSERVER_SYSCALL_INTERNAL_H
git://git.onelab.eu / util-vserver.git / blobdiff