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>
29 #include <sys/syscall.h>
34 #if !defined(__NR_vserver) && defined(ENSC_SYSCALL__NR_vserver)
35 # define __NR_vserver ENSC_SYSCALL__NR_vserver
38 inline static ALWAYSINLINE void vc_noop0() {}
41 #define VC_SUFFIX else (void)(vc_noop0()
42 #define CALL_VC_NOOP vc_noop0()
43 #define CALL_VC_GENERAL(ID, SUFFIX, FUNC, ...) \
44 VC_PREFIX; VC_SELECT(ID) return FUNC ## _ ## SUFFIX(__VA_ARGS__); VC_SUFFIX
46 #ifdef VC_MULTIVERSION_SYSCALL
47 # define VC_SELECT(ID) if (ver>=(ID))
48 # define CALL_VC(...) \
50 int ver = utilvserver_checkCompatVersion(); \
51 if (ver==-1) return -1; \
52 VC_SUFFIX, __VA_ARGS__, VC_PREFIX; \
57 # define VC_SELECT(ID) if (1)
58 # define CALL_VC(...) \
60 if (1) {} VC_SUFFIX, __VA_ARGS__, VC_PREFIX; \
61 errno = ENOSYS; return -1; \
65 #ifdef VC_ENABLE_API_COMPAT
66 # define CALL_VC_COMPAT(F,...) CALL_VC_GENERAL(0x00010000, compat, F, __VA_ARGS__)
68 # define CALL_VC_COMPAT(F,...) CALL_VC_NOOP
71 #ifdef VC_ENABLE_API_LEGACY
72 # define CALL_VC_LEGACY(F,...) CALL_VC_GENERAL(0x00000000, legacy, F, __VA_ARGS__)
74 # define CALL_VC_LEGACY(F,...) CALL_VC_NOOP
77 #ifdef VC_ENABLE_API_V11
78 # define CALL_VC_V11(F,...) CALL_VC_GENERAL(0x00010000, v11, F, __VA_ARGS__)
80 # define CALL_VC_V11(F,...) CALL_VC_NOOP
83 #ifdef VC_ENABLE_API_V13
84 # define CALL_VC_V13(F,...) CALL_VC_GENERAL(0x00010011, v13, F, __VA_ARGS__)
86 # define CALL_VC_V13(F,...) CALL_VC_NOOP
89 #ifdef VC_ENABLE_API_V13
90 # define CALL_VC_V13A(F,...) CALL_VC_GENERAL(0x00010012, v13, F, __VA_ARGS__)
92 # define CALL_VC_V13A(F,...) CALL_VC_NOOP
95 #ifdef VC_ENABLE_API_V13
96 # define CALL_VC_V13B(F,...) CALL_VC_GENERAL(0x00010021, v13b, F, __VA_ARGS__)
98 # define CALL_VC_V13B(F,...) CALL_VC_NOOP
101 #ifdef VC_ENABLE_API_V13
102 # define CALL_VC_V13OBS(F,...) CALL_VC_GENERAL(0x00010011, v13obs, F, __VA_ARGS__)
104 # define CALL_VC_V13OBS(F,...) CALL_VC_NOOP
108 #ifdef VC_ENABLE_API_NET
109 # define CALL_VC_NET(F,...) CALL_VC_GENERAL(0x00010016, net, F, __VA_ARGS__)
111 # define CALL_VC_NET(F,...) CALL_VC_NOOP
114 #ifdef VC_ENABLE_API_FSCOMPAT
115 # define CALL_VC_FSCOMPAT(F,...) CALL_VC_GENERAL(0x00010000, fscompat, F, __VA_ARGS__)
117 # define CALL_VC_FSCOMPAT(F,...) CALL_VC_NOOP
120 #ifdef VC_ENABLE_API_OLDPROC
121 # define CALL_VC_OLDPROC(F,...) CALL_VC_GENERAL(0x00000000, oldproc, F, __VA_ARGS__)
123 # define CALL_VC_OLDPROC(F,...) CALL_VC_NOOP
126 #ifdef VC_ENABLE_API_OLDUTS
127 # define CALL_VC_OLDUTS(F,...) CALL_VC_GENERAL(0x00000000, olduts, F, __VA_ARGS__)
129 # define CALL_VC_OLDUTS(F,...) CALL_VC_NOOP
133 // Some kernel <-> userspace wrappers; they should be noops in most cases
136 # define CTX_KERNEL2USER(X) (((X)==(uint32_t)(-1)) ? VC_NOCTX : \
137 ((X)==(uint32_t)(-2)) ? VC_SAMECTX : \
140 # define CTX_USER2KERNEL(X) (((X)==VC_DYNAMIC_XID) ? (uint32_t)(-1) : \
141 ((X)==VC_SAMECTX) ? (uint32_t)(-2) : \
144 # define CTX_USER2KERNEL(X) (X)
145 # define CTX_KERNEL2USER(X) (X)
149 # define EXT2FLAGS_USER2KERNEL(X) (((X) & ~(VC_IMMUTABLE_FILE_FL|VC_IMMUTABLE_LINK_FL)) | \
150 ((X) & VC_IMMUTABLE_FILE_FL ? EXT2_IMMUTABLE_FILE_FL : 0) | \
151 ((X) & VC_IMMUTABLE_LINK_FL ? EXT2_IMMUTABLE_LINK_FL : 0))
152 # define EXT2FLAGS_KERNEL2USER(X) (((X) & ~(EXT2_IMMUTABLE_FILE_FL|EXT2_IMMUTABLE_LINK_FL)) | \
153 ((X) & EXT2_IMMUTABLE_FILE_FL ? VC_IMMUTABLE_FILE_FL : 0) | \
154 ((X) & EXT2_IMMUTABLE_LINK_FL ? VC_IMMUTABLE_LINK_FL : 0))
156 # define EXT2FLAGS_KERNEL2USER(X) (X)
157 # define EXT2FLAGS_USER2KERNEL(X) (X)
161 # define VHI_USER2KERNEL(X) ((((X)==vcVHI_CONTEXT) ? VHIN_CONTEXT : \
162 ((X)==vcVHI_SYSNAME) ? VHIN_SYSNAME : \
163 ((X)==vcVHI_NODENAME) ? VHIN_NODENAME : \
164 ((X)==vcVHI_RELEASE) ? VHIN_RELEASE : \
165 ((X)==vcVHI_VERSION) ? VHIN_VERSION : \
166 ((X)==vcVHI_MACHINE) ? VHIN_MACHINE : \
167 ((X)==vcVHI_DOMAINNAME) ? VHIN_DOMAINNAME : \
169 # define VHI_KERNEL2USER(X) ((((X)==VHIN_CONTEXT) ? vcVHI_CONTEXT : \
170 ((X)==VHIN_SYSNAME) ? vcVHI_SYSNAME : \
171 ((X)==VHIN_NODENAME) ? vcVHI_NODENAME : \
172 ((X)==VHIN_RELEASE) ? vcVHI_RELEASE : \
173 ((X)==VHIN_VERSION) ? vcVHI_VERSION : \
174 ((X)==VHIN_MACHINE) ? vcVHI_MACHINE : \
175 ((X)==VHIN_DOMAINNAME) ? vcVHI_DOMAINNAME : \
178 # define VHI_USER2KERNEL(X) (X)
179 # define VHI_KERNEL2USER(X) (X)
183 # define NID_KERNEL2USER(X) (((X)==(uint32_t)(-1)) ? VC_NONID : \
186 # define NID_USER2KERNEL(X) (((X)==VC_DYNAMIC_NID) ? (uint32_t)(-1) : \
189 # define NID_USER2KERNEL(X) (X)
190 # define NID_KERNEL2USER(X) (X)
194 # define NETTYPE_USER2KERNEL(X) ((X)==vcNET_IPV4 ? 0 : \
195 (X)==vcNET_IPV6 ? 1 : \
196 (X)==vcNET_IPV4R ? 2 : \
197 (X)==vcNET_IPV6R ? 3 : \
199 # define NETTYPE_KERNEL2USER(X) ((X)==0 ? vcNET_IPV4 ? : \
200 (X)==1 ? vcNET_IPV6 ? : \
201 (X)==2 ? vcNET_IPV4R ? : \
202 (X)==3 ? vcNET_IPV6R ? : \
205 # define NETTYPE_USER2KERNEL(X) (X)
206 # define NETTYPE_KERNEL2USER(X) (X)
209 #define CDLIM_USER2KERNEL(X) ((X)==VC_CDLIM_UNSET ? CDLIM_UNSET : \
210 (X)==VC_CDLIM_INFINITY ? CDLIM_INFINITY : \
211 (X)==VC_CDLIM_KEEP ? CDLIM_KEEP : \
214 /// the __typeof__ thing is a hack to deal with the kernel interface
215 /// using an unsigned long long value for a uint32_t type
216 #define CDLIM_KERNEL2USER(X) ((X)==(__typeof__(X))CDLIM_UNSET ? VC_CDLIM_UNSET : \
217 (X)==(__typeof__(X))CDLIM_INFINITY ? VC_CDLIM_INFINITY : \
218 (X)==(__typeof__(X))CDLIM_KEEP ? VC_CDLIM_KEEP : \
222 #define ENSC_STRUCT_IDX(STRUCT,ATTR) \
223 ((char*)(&(STRUCT).ATTR) - (char*)(&(STRUCT)))
224 #define ENSC_SAME_STRUCT_IDX(LHS,RHS,ATTR) \
225 (ENSC_STRUCT_IDX(LHS,ATTR) == ENSC_STRUCT_IDX(RHS,ATTR))
226 #define ENSC_SAME_STRUCT_ITEM(LHS,RHS,ATTR) \
227 (ENSC_SAME_STRUCT_IDX(LHS,RHS,ATTR) && \
228 sizeof((LHS).ATTR)==sizeof((RHS).ATTR) && \
229 sizeof(LHS)==sizeof(RHS))
231 #define EXT2_IOC_GETCONTEXT _IOR('x', 1, long)
232 #define EXT2_IOC_SETCONTEXT _IOW('x', 2, long)
235 #ifdef ENSC_SYSCALL_TRADITIONAL
236 inline static UNUSED ALWAYSINLINE
237 int vserver(uint32_t cmd, uint32_t id, void *data)
239 #if defined __dietlibc__
240 extern long int syscall (long int __sysno, ...);
243 return syscall(__NR_vserver, cmd, id, data);
246 inline static UNUSED ALWAYSINLINE
247 _syscall3(int, vserver,
248 uint32_t, cmd, uint32_t, id, void *, data)
252 #endif // H_VSERVER_SYSCALL_INTERNAL_H