109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
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/* -*-comment-start: "//";comment-end:""-*-
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* Mes --- Maxwell Equations of Software
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* Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of Mes.
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*
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* Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <libmes.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#define SYS_fork 0x02
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#define SYS_read 0x03
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#define SYS_open 0x05
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#define SYS_waitpid 0x07
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#define SYS_execve 0x0b
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#define SYS_chmod 0x0f
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#define SYS_access 0x21
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#define SYS_brk 0x2d
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#define SYS_ioctl 0x36
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#define SYS_fsync 0x76
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int
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fork ()
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{
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return _sys_call (SYS_fork);
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}
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ssize_t
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read (int filedes, void *buffer, size_t size)
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{
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return _sys_call3 (SYS_read, (int)filedes, (int)buffer, (int)size);
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}
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int
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open (char const *file_name, int flags, ...)
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{
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va_list ap;
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va_start (ap, flags);
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int mask = va_arg (ap, int);
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int r = _sys_call3 (SYS_open, (int)file_name, (int)flags, (int)mask);
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va_end (ap);
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return r;
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}
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pid_t
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waitpid (pid_t pid, int *status_ptr, int options)
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{
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return _sys_call3 (SYS_waitpid, (int)pid, (int)status_ptr, (int)options);
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}
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int
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execve (char const* file_name, char *const argv[], char *const env[])
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{
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return _sys_call3 (SYS_execve, (int)file_name, (int)argv, (int)env);
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}
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int
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chmod (char const *file_name, mode_t mask)
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{
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return _sys_call2 (SYS_chmod, (int)file_name, (int)mask);
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}
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int
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access (char const *file_name, int how)
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{
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return _sys_call2 (SYS_access, (int)file_name, (int)how);
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}
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int
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brk (void *addr)
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{
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return _sys_call1 (SYS_brk, (int)addr);
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}
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int
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ioctl (int filedes, unsigned long command, ...)
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{
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va_list ap;
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va_start (ap, command);
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int data = va_arg (ap, int);
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int r = _sys_call3 (SYS_ioctl, (int)filedes, (int)command, (int)data);
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va_end (ap);
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return r;
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}
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int
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fsync (int filedes)
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{
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return _sys_call1 (SYS_fsync, (int)filedes);
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}
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