// $Id: vserver-internal.h 2589 2007-08-16 03:06:50Z dhozac $ --*- c++ -*-- // Copyright (C) 2003 Enrico Scholz // // 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 #include #include #include #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