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.
19 #ifndef H_VSERVER_SYSCALL_INTERNAL_H
20 #define H_VSERVER_SYSCALL_INTERNAL_H
22 #include <asm/unistd.h>
26 #include <sys/syscall.h>
32 # define __NR_vserver 273
36 #define VC_SUFFIX else (void)((void)0
37 #define CALL_VC_NOOP (void)0
38 #define CALL_VC_GENERAL(ID, SUFFIX, FUNC, ...) \
39 VC_PREFIX; VC_SELECT(ID) return FUNC ## _ ## SUFFIX(__VA_ARGS__); VC_SUFFIX
42 # define VC_SELECT(ID) case ID: if(1)
43 # define CALL_VC(...) \
45 switch (utilvserver_checkCompatVersion()&~0xff) { \
46 case -1 & ~0xff : if (1) break; \
47 VC_SUFFIX, __VA_ARGS__ , VC_PREFIX; \
48 default : errno = EINVAL; \
53 # define VC_SELECT(ID) if (1)
54 # define CALL_VC(...) \
56 if (1) {} VC_SUFFIX, __VA_ARGS__, VC_PREFIX; \
57 errno = ENOSYS; return -1; \
61 #ifdef VC_ENABLE_API_COMPAT
62 # define CALL_VC_COMPAT(F,...) CALL_VC_GENERAL(0x00010000, compat, F, __VA_ARGS__)
64 # define CALL_VC_COMPAT(F,...) CALL_VC_NOOP
67 #ifdef VC_ENABLE_API_LEGACY
68 # define CALL_VC_LEGACY(F,...) CALL_VC_GENERAL(0x00000000, legacy, F, __VA_ARGS__)
70 # define CALL_VC_LEGACY(F,...) CALL_VC_NOOP
73 #ifdef VC_ENABLE_API_V11
74 # define CALL_VC_V11(F,...) CALL_VC_GENERAL(0x00010000, v11, F, __VA_ARGS__)
76 # define CALL_VC_V11(F,...) CALL_VC_NOOP
81 # define CTX_KERNEL2USER(X) (((X)==(uint32_t)(-1)) ? VC_NOCTX : \
82 ((X)==(uint32_t)(-2)) ? VC_SAMECTX : \
85 # define CTX_USER2KERNEL(X) (((X)==VC_RANDCTX) ? (uint32_t)(-1) : \
86 ((X)==VC_SAMECTX) ? (uint32_t)(-2) : \
89 # define CTX_USER2KERNEL(X) (X)
90 # define CTX_KERNEL2USER(X) (X)
94 # define EXT2FLAGS_USER2KERNEL(X) (((X) & ~(VC_IMMUTABLE_FILE_FL|VC_IMMUTABLE_LINK_FL)) | \
95 ((X) & VC_IMMUTABLE_FILE_FL ? EXT2_IMMUTABLE_FILE_FL : 0) | \
96 ((X) & VC_IMMUTABLE_LINK_FL ? EXT2_IMMUTABLE_LINK_FL : 0))
97 # define EXT2FLAGS_KERNEL2USER(X) (((X) & ~(EXT2_IMMUTABLE_FILE_FL|EXT2_IMMUTABLE_LINK_FL)) | \
98 ((X) & EXT2_IMMUTABLE_FILE_FL ? VC_IMMUTABLE_FILE_FL : 0) | \
99 ((X) & EXT2_IMMUTABLE_LINK_FL ? VC_IMMUTABLE_LINK_FL : 0))
101 # define EXT2FLAGS_KERNEL2USER(X) (X)
102 # define EXT2FLAGS_USER2KERNEL(X) (X)
106 #define EXT2_IOC_GETCONTEXT _IOR('x', 1, long)
107 #define EXT2_IOC_SETCONTEXT _IOW('x', 2, long)
110 #if defined(__pic__) && defined(__i386)
111 inline static UNUSED ALWAYSINLINE
112 int vserver(uint32_t cmd, uint32_t id, void *data)
114 #if defined __dietlibc__
115 extern long int syscall (long int __sysno, ...);
118 return syscall(__NR_vserver, cmd, id, data);
121 inline static UNUSED ALWAYSINLINE
122 _syscall3(int, vserver,
123 uint32_t, cmd, uint32_t, id, void *, data)
127 #endif // H_VSERVER_SYSCALL_INTERNAL_H