unistd.h

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/*
 *  include/asm-s390/unistd.h
 *
 *  S390 version
 *
 *  Derived from "include/asm-i386/unistd.h"
 */

#ifndef _ASM_S390_UNISTD_H_
#define _ASM_S390_UNISTD_H_

/*
 * This file contains the system call numbers.
 */

#define __NR_exit                 1
#define __NR_fork                 2
#define __NR_read                 3
#define __NR_write                4
#define __NR_open                 5
#define __NR_close                6
#define __NR_creat                8
#define __NR_link                 9
#define __NR_unlink              10
#define __NR_execve              11
#define __NR_chdir               12
#define __NR_time                13
#define __NR_mknod               14
#define __NR_chmod               15
#define __NR_lchown              16
#define __NR_lseek               19
#define __NR_getpid              20
#define __NR_mount               21
#define __NR_umount              22
#define __NR_setuid              23
#define __NR_getuid              24
#define __NR_stime               25
#define __NR_ptrace              26
#define __NR_alarm               27
#define __NR_pause               29
#define __NR_utime               30
#define __NR_access              33
#define __NR_nice                34
#define __NR_sync                36
#define __NR_kill                37
#define __NR_rename              38
#define __NR_mkdir               39
#define __NR_rmdir               40
#define __NR_dup                 41
#define __NR_pipe                42
#define __NR_times               43
#define __NR_brk                 45
#define __NR_setgid              46
#define __NR_getgid              47
#define __NR_signal              48
#define __NR_geteuid             49
#define __NR_getegid             50
#define __NR_acct                51
#define __NR_umount2             52
#define __NR_ioctl               54
#define __NR_fcntl               55
#define __NR_setpgid             57
#define __NR_umask               60
#define __NR_chroot              61
#define __NR_ustat               62
#define __NR_dup2                63
#define __NR_getppid             64
#define __NR_getpgrp             65
#define __NR_setsid              66
#define __NR_sigaction           67
#define __NR_setreuid            70
#define __NR_setregid            71
#define __NR_sigsuspend          72
#define __NR_sigpending          73
#define __NR_sethostname         74
#define __NR_setrlimit           75
#define __NR_getrlimit           76
#define __NR_getrusage           77
#define __NR_gettimeofday        78
#define __NR_settimeofday        79
#define __NR_getgroups           80
#define __NR_setgroups           81
#define __NR_symlink             83
#define __NR_readlink            85
#define __NR_uselib              86
#define __NR_swapon              87
#define __NR_reboot              88
#define __NR_readdir             89
#define __NR_mmap                90
#define __NR_munmap              91
#define __NR_truncate            92
#define __NR_ftruncate           93
#define __NR_fchmod              94
#define __NR_fchown              95
#define __NR_getpriority         96
#define __NR_setpriority         97
#define __NR_statfs              99
#define __NR_fstatfs            100
#define __NR_ioperm             101
#define __NR_socketcall         102
#define __NR_syslog             103
#define __NR_setitimer          104
#define __NR_getitimer          105
#define __NR_stat               106
#define __NR_lstat              107
#define __NR_fstat              108
#define __NR_vhangup            111
#define __NR_idle               112
#define __NR_wait4              114
#define __NR_swapoff            115
#define __NR_sysinfo            116
#define __NR_ipc                117
#define __NR_fsync              118
#define __NR_sigreturn          119
#define __NR_clone              120
#define __NR_setdomainname      121
#define __NR_uname              122
#define __NR_adjtimex           124
#define __NR_mprotect           125
#define __NR_sigprocmask        126
#define __NR_create_module      127
#define __NR_init_module        128
#define __NR_delete_module      129
#define __NR_get_kernel_syms    130
#define __NR_quotactl           131
#define __NR_getpgid            132
#define __NR_fchdir             133
#define __NR_bdflush            134
#define __NR_sysfs              135
#define __NR_personality        136
#define __NR_afs_syscall        137 /* Syscall for Andrew File System */
#define __NR_setfsuid           138
#define __NR_setfsgid           139
#define __NR__llseek            140
#define __NR_getdents           141
#define __NR__newselect         142
#define __NR_flock              143
#define __NR_msync              144
#define __NR_readv              145
#define __NR_writev             146
#define __NR_getsid             147
#define __NR_fdatasync          148
#define __NR__sysctl            149
#define __NR_mlock              150
#define __NR_munlock            151
#define __NR_mlockall           152
#define __NR_munlockall         153
#define __NR_sched_setparam             154
#define __NR_sched_getparam             155
#define __NR_sched_setscheduler         156
#define __NR_sched_getscheduler         157
#define __NR_sched_yield                158
#define __NR_sched_get_priority_max     159
#define __NR_sched_get_priority_min     160
#define __NR_sched_rr_get_interval      161
#define __NR_nanosleep          162
#define __NR_mremap             163
#define __NR_setresuid          164
#define __NR_getresuid          165
#define __NR_query_module       167
#define __NR_poll               168
#define __NR_nfsservctl         169
#define __NR_setresgid          170
#define __NR_getresgid          171
#define __NR_prctl              172
#define __NR_rt_sigreturn       173
#define __NR_rt_sigaction       174
#define __NR_rt_sigprocmask     175
#define __NR_rt_sigpending      176
#define __NR_rt_sigtimedwait    177
#define __NR_rt_sigqueueinfo    178
#define __NR_rt_sigsuspend      179
#define __NR_pread              180
#define __NR_pwrite             181
#define __NR_chown              182
#define __NR_getcwd             183
#define __NR_capget             184
#define __NR_capset             185
#define __NR_sigaltstack        186
#define __NR_sendfile           187
#define __NR_getpmsg		188
#define __NR_putpmsg		189
#define __NR_vfork		190
#define __NR_ugetrlimit		191	/* SuS compliant getrlimit */
#define __NR_mmap2		192
#define __NR_truncate64		193
#define __NR_ftruncate64	194
#define __NR_stat64		195
#define __NR_lstat64		196
#define __NR_fstat64		197
#define __NR_lchown32		198
#define __NR_getuid32		199
#define __NR_getgid32		200
#define __NR_geteuid32		201
#define __NR_getegid32		202
#define __NR_setreuid32		203
#define __NR_setregid32		204
#define __NR_getgroups32	205
#define __NR_setgroups32	206
#define __NR_fchown32		207
#define __NR_setresuid32	208
#define __NR_getresuid32	209
#define __NR_setresgid32	210
#define __NR_getresgid32	211
#define __NR_chown32		212
#define __NR_setuid32		213
#define __NR_setgid32		214
#define __NR_setfsuid32		215
#define __NR_setfsgid32		216
#define __NR_pivot_root         217
#define __NR_mincore            218
#define __NR_madvise            219
#define __NR_getdents64		220


/* user-visible error numbers are in the range -1 - -122: see <asm-s390/errno.h> */

#define __syscall_return(type, res)                          \
do {                                                         \
        if ((unsigned long)(res) >= (unsigned long)(-125)) { \
                errno = -(res);                              \
                res = -1;                                    \
        }                                                    \
        return (type) (res);                                 \
} while (0)

#define _svc_clobber "2", "cc", "memory"

#define _syscall0(type,name)                                 \
type name(void) {                                            \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name)                          \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall1(type,name,type1,arg1)                      \
type name(type1 arg1) {                                      \
        register type1 __arg1 asm("2") = arg1;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall2(type,name,type1,arg1,type2,arg2)           \
type name(type1 arg1, type2 arg2) {                          \
        register type1 __arg1 asm("2") = arg1;               \
        register type2 __arg2 asm("3") = arg2;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1),                              \
                  "d" (__arg2)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)\
type name(type1 arg1, type2 arg2, type3 arg3) {              \
        register type1 __arg1 asm("2") = arg1;               \
        register type2 __arg2 asm("3") = arg2;               \
        register type3 __arg3 asm("4") = arg3;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1),                              \
                  "d" (__arg2),                              \
                  "d" (__arg3)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,\
                  type4,name4)                               \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {  \
        register type1 __arg1 asm("2") = arg1;               \
        register type2 __arg2 asm("3") = arg2;               \
        register type3 __arg3 asm("4") = arg3;               \
        register type4 __arg4 asm("5") = arg4;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1),                              \
                  "d" (__arg2),                              \
                  "d" (__arg3),                              \
                  "d" (__arg4)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,\
                  type4,name4,type5,name5)                   \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4,    \
          type5 arg5) {                                      \
        register type1 __arg1 asm("2") = arg1;               \
        register type2 __arg2 asm("3") = arg2;               \
        register type3 __arg3 asm("4") = arg3;               \
        register type4 __arg4 asm("5") = arg4;               \
        register type5 __arg5 asm("6") = arg5;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1),                              \
                  "d" (__arg2),                              \
                  "d" (__arg3),                              \
                  "d" (__arg4),                              \
                  "d" (__arg5)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#ifdef __KERNEL_SYSCALLS__

/*
 * we need this inline - forking from kernel space will result
 * in NO COPY ON WRITE (!!!), until an execve is executed. This
 * is no problem, but for the stack. This is handled by not letting
 * main() use the stack at all after fork(). Thus, no function
 * calls - which means inline code for fork too, as otherwise we
 * would use the stack upon exit from 'fork()'.
 *
 * Actually only pause and fork are needed inline, so that there
 * won't be any messing with the stack from main(), but we define
 * some others too.
 */
#define __NR__exit __NR_exit
static inline _syscall0(int,idle)
static inline _syscall0(int,pause)
static inline _syscall0(int,sync)
static inline _syscall0(pid_t,setsid)
static inline _syscall3(int,write,int,fd,const char *,buf,off_t,count)
static inline _syscall3(int,read,int,fd,char *,buf,off_t,count)
static inline _syscall3(off_t,lseek,int,fd,off_t,offset,int,count)
static inline _syscall1(int,dup,int,fd)
static inline _syscall3(int,execve,const char *,file,char **,argv,char **,envp)
static inline _syscall3(int,open,const char *,file,int,flag,int,mode)
static inline _syscall1(int,close,int,fd)
static inline _syscall1(int,_exit,int,exitcode)
static inline _syscall1(int,delete_module,const char *,name)
static inline _syscall2(long,stat,char *,filename,struct stat *,statbuf)

static inline pid_t waitpid(int pid, int * wait_stat, int flags)
{
        return sys_wait4(pid, wait_stat, flags, NULL);
}

static inline pid_t wait(int * wait_stat)
{
        return waitpid(-1,wait_stat,0);
}

#endif

#endif /* _ASM_S390_UNISTD_H_ */