3 // Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
5 // This program is free software; you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation; version 2 of the License.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 #ifdef H_VSERVER_SYSCALL_INTERNAL_H
19 # error vserver-internal.h must not be included more than once
22 #ifndef H_VSERVER_SYSCALL_INTERNAL_H
23 #define H_VSERVER_SYSCALL_INTERNAL_H
25 #include <asm/unistd.h>
31 #include "syscall-wrap.h"
33 #if !defined(__NR_vserver) && defined(ENSC_SYSCALL__NR_vserver)
34 # define __NR_vserver ENSC_SYSCALL__NR_vserver
37 inline static ALWAYSINLINE void vc_noop0() {}
40 #define VC_SUFFIX else (void)(vc_noop0()
41 #define CALL_VC_NOOP vc_noop0()
42 #define CALL_VC_GENERAL(ID, SUFFIX, FUNC, ...) \
43 VC_PREFIX; VC_SELECT(ID) return FUNC ## _ ## SUFFIX(__VA_ARGS__); VC_SUFFIX
45 #ifdef VC_MULTIVERSION_SYSCALL
46 # define VC_SELECT(ID) if (ver>=(ID))
47 # define CALL_VC(...) \
49 int ver = utilvserver_checkCompatVersion(); \
50 if (ver==-1) return -1; \
51 VC_SUFFIX, __VA_ARGS__, VC_PREFIX; \
56 # define VC_SELECT(ID) if (1)
57 # define CALL_VC(...) \
59 if (1) {} VC_SUFFIX, __VA_ARGS__, VC_PREFIX; \
60 errno = ENOSYS; return -1; \
64 #ifdef VC_ENABLE_API_COMPAT
65 # define CALL_VC_COMPAT(F,...) CALL_VC_GENERAL(0x00010000, compat, F, __VA_ARGS__)
67 # define CALL_VC_COMPAT(F,...) CALL_VC_NOOP
70 #ifdef VC_ENABLE_API_LEGACY
71 # define CALL_VC_LEGACY(F,...) CALL_VC_GENERAL(0x00000000, legacy, F, __VA_ARGS__)
73 # define CALL_VC_LEGACY(F,...) CALL_VC_NOOP
76 #ifdef VC_ENABLE_API_V11
77 # define CALL_VC_V11(F,...) CALL_VC_GENERAL(0x00010000, v11, F, __VA_ARGS__)
79 # define CALL_VC_V11(F,...) CALL_VC_NOOP
82 #ifdef VC_ENABLE_API_V13
83 # define CALL_VC_V13(F,...) CALL_VC_GENERAL(0x00010011, v13, F, __VA_ARGS__)
85 # define CALL_VC_V13(F,...) CALL_VC_NOOP
88 #ifdef VC_ENABLE_API_V13
89 # define CALL_VC_V13A(F,...) CALL_VC_GENERAL(0x00010012, v13, F, __VA_ARGS__)
91 # define CALL_VC_V13A(F,...) CALL_VC_NOOP
94 #ifdef VC_ENABLE_API_V13
95 # define CALL_VC_V13B(F,...) CALL_VC_GENERAL(0x00010021, v13b, F, __VA_ARGS__)
97 # define CALL_VC_V13B(F,...) CALL_VC_NOOP
100 #ifdef VC_ENABLE_API_V13OBS
101 # define CALL_VC_V13OBS(F,...) CALL_VC_GENERAL(0x00010011, v13obs, F, __VA_ARGS__)
103 # define CALL_VC_V13OBS(F,...) CALL_VC_NOOP
107 #ifdef VC_ENABLE_API_V21
108 # define CALL_VC_V21(F,...) CALL_VC_GENERAL(0x00020100, v21, F, __VA_ARGS__)
110 # define CALL_VC_V21(F,...) CALL_VC_NOOP
114 #ifdef VC_ENABLE_API_NET
115 # define CALL_VC_NET(F,...) CALL_VC_GENERAL(0x00010016, net, F, __VA_ARGS__)
117 # define CALL_VC_NET(F,...) CALL_VC_NOOP
120 #ifdef VC_ENABLE_API_FSCOMPAT
121 # define CALL_VC_FSCOMPAT(F,...) CALL_VC_GENERAL(0x00010000, fscompat, F, __VA_ARGS__)
123 # define CALL_VC_FSCOMPAT(F,...) CALL_VC_NOOP
126 #ifdef VC_ENABLE_API_OLDPROC
127 # define CALL_VC_OLDPROC(F,...) CALL_VC_GENERAL(0x00000000, oldproc, F, __VA_ARGS__)
129 # define CALL_VC_OLDPROC(F,...) CALL_VC_NOOP
132 #ifdef VC_ENABLE_API_OLDUTS
133 # define CALL_VC_OLDUTS(F,...) CALL_VC_GENERAL(0x00000000, olduts, F, __VA_ARGS__)
135 # define CALL_VC_OLDUTS(F,...) CALL_VC_NOOP
139 // Some kernel <-> userspace wrappers; they should be noops in most cases
142 # define CTX_KERNEL2USER(X) (((X)==(uint32_t)(-1)) ? VC_NOCTX : \
143 ((X)==(uint32_t)(-2)) ? VC_SAMECTX : \
146 # define CTX_USER2KERNEL(X) (((X)==VC_DYNAMIC_XID) ? (uint32_t)(-1) : \
147 ((X)==VC_SAMECTX) ? (uint32_t)(-2) : \
150 # define CTX_USER2KERNEL(X) (X)
151 # define CTX_KERNEL2USER(X) (X)
155 # define EXT2FLAGS_USER2KERNEL(X) (((X) & ~(VC_IMMUTABLE_FILE_FL|VC_IMMUTABLE_LINK_FL)) | \
156 ((X) & VC_IMMUTABLE_FILE_FL ? EXT2_IMMUTABLE_FILE_FL : 0) | \
157 ((X) & VC_IMMUTABLE_LINK_FL ? EXT2_IMMUTABLE_LINK_FL : 0))
158 # define EXT2FLAGS_KERNEL2USER(X) (((X) & ~(EXT2_IMMUTABLE_FILE_FL|EXT2_IMMUTABLE_LINK_FL)) | \
159 ((X) & EXT2_IMMUTABLE_FILE_FL ? VC_IMMUTABLE_FILE_FL : 0) | \
160 ((X) & EXT2_IMMUTABLE_LINK_FL ? VC_IMMUTABLE_LINK_FL : 0))
162 # define EXT2FLAGS_KERNEL2USER(X) (X)
163 # define EXT2FLAGS_USER2KERNEL(X) (X)
167 # define VHI_USER2KERNEL(X) ((((X)==vcVHI_CONTEXT) ? VHIN_CONTEXT : \
168 ((X)==vcVHI_SYSNAME) ? VHIN_SYSNAME : \
169 ((X)==vcVHI_NODENAME) ? VHIN_NODENAME : \
170 ((X)==vcVHI_RELEASE) ? VHIN_RELEASE : \
171 ((X)==vcVHI_VERSION) ? VHIN_VERSION : \
172 ((X)==vcVHI_MACHINE) ? VHIN_MACHINE : \
173 ((X)==vcVHI_DOMAINNAME) ? VHIN_DOMAINNAME : \
175 # define VHI_KERNEL2USER(X) ((((X)==VHIN_CONTEXT) ? vcVHI_CONTEXT : \
176 ((X)==VHIN_SYSNAME) ? vcVHI_SYSNAME : \
177 ((X)==VHIN_NODENAME) ? vcVHI_NODENAME : \
178 ((X)==VHIN_RELEASE) ? vcVHI_RELEASE : \
179 ((X)==VHIN_VERSION) ? vcVHI_VERSION : \
180 ((X)==VHIN_MACHINE) ? vcVHI_MACHINE : \
181 ((X)==VHIN_DOMAINNAME) ? vcVHI_DOMAINNAME : \
184 # define VHI_USER2KERNEL(X) (X)
185 # define VHI_KERNEL2USER(X) (X)
189 # define NID_KERNEL2USER(X) (((X)==(uint32_t)(-1)) ? VC_NONID : \
192 # define NID_USER2KERNEL(X) (((X)==VC_DYNAMIC_NID) ? (uint32_t)(-1) : \
195 # define NID_USER2KERNEL(X) (X)
196 # define NID_KERNEL2USER(X) (X)
200 # define NETTYPE_USER2KERNEL(X) ((X)==vcNET_IPV4 ? NXA_TYPE_IPV4 : \
201 (X)==vcNET_IPV6 ? NXA_TYPE_IPV6 : \
202 (X)==vcNET_IPV4B ? (NXA_TYPE_IPV4 | NXA_MOD_BCAST) : \
203 (X)==vcNET_IPV6B ? (NXA_TYPE_IPV6 | NXA_MOD_BCAST) : \
204 (X)==vcNET_ANY ? NXA_TYPE_ANY : \
206 # define NETTYPE_KERNEL2USER(X) ((X)==NXA_TYPE_IPV4 ? vcNET_IPV4 : \
207 (X)==NXA_TYPE_IPV6 ? vcNET_IPV6 : \
208 (X)==(NXA_TYPE_IPV4|NXA_MOD_BCAST) ? vcNET_IPV4B : \
209 (X)==(NXA_TYPE_IPV6|NXA_MOD_BCAST) ? vcNET_IPV6B : \
210 (X)==NXA_TYPE_ANY ? vcNET_ANY : \
213 # define NETTYPE_USER2KERNEL(X) (X)
214 # define NETTYPE_KERNEL2USER(X) (X)
217 #define CDLIM_USER2KERNEL(X) ((X)==VC_CDLIM_UNSET ? CDLIM_UNSET : \
218 (X)==VC_CDLIM_INFINITY ? CDLIM_INFINITY : \
219 (X)==VC_CDLIM_KEEP ? CDLIM_KEEP : \
222 /// the __typeof__ thing is a hack to deal with the kernel interface
223 /// using an unsigned long long value for a uint32_t type
224 #define CDLIM_KERNEL2USER(X) ((X)==(__typeof__(X))CDLIM_UNSET ? VC_CDLIM_UNSET : \
225 (X)==(__typeof__(X))CDLIM_INFINITY ? VC_CDLIM_INFINITY : \
226 (X)==(__typeof__(X))CDLIM_KEEP ? VC_CDLIM_KEEP : \
230 #define ENSC_STRUCT_IDX(STRUCT,ATTR) \
231 ((char*)(&(STRUCT).ATTR) - (char*)(&(STRUCT)))
232 #define ENSC_SAME_STRUCT_IDX(LHS,RHS,ATTR) \
233 (ENSC_STRUCT_IDX(LHS,ATTR) == ENSC_STRUCT_IDX(RHS,ATTR))
234 #define ENSC_SAME_STRUCT_ITEM(LHS,RHS,ATTR) \
235 (ENSC_SAME_STRUCT_IDX(LHS,RHS,ATTR) && \
236 sizeof((LHS).ATTR)==sizeof((RHS).ATTR) && \
237 sizeof(LHS)==sizeof(RHS))
239 #define EXT2_IOC_GETCONTEXT _IOR('x', 1, long)
240 #define EXT2_IOC_SETCONTEXT _IOW('x', 2, long)
243 #ifdef ENSC_SYSCALL_TRADITIONAL
244 inline static UNUSED ALWAYSINLINE
245 int vserver(uint32_t cmd, uint32_t id, void *data)
247 #if defined __dietlibc__
248 extern long int syscall (long int __sysno, ...);
251 return syscall(__NR_vserver, cmd, id, data);
254 inline static UNUSED ALWAYSINLINE
255 _syscall3(int, vserver,
256 uint32_t, cmd, uint32_t, id, void *, data)
260 #endif // H_VSERVER_SYSCALL_INTERNAL_H