123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149 |
- /*
- * Copyright (C) 2010 Piotr Jaroszyński <p.jaroszynski@gmail.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
- FILE_LICENCE ( GPL2_OR_LATER );
-
- /** @file
- *
- * Implementation of most of the linux API.
- */
-
- #include <linux_api.h>
-
- #include <stdarg.h>
- #include <asm/unistd.h>
- #include <string.h>
-
- int linux_open ( const char *pathname, int flags ) {
- return linux_syscall ( __NR_open, pathname, flags );
- }
-
- int linux_close ( int fd ) {
- return linux_syscall ( __NR_close, fd );
- }
-
- off_t linux_lseek ( int fd, off_t offset, int whence ) {
- return linux_syscall ( __NR_lseek, fd, offset, whence );
- }
-
- __kernel_ssize_t linux_read ( int fd, void *buf, __kernel_size_t count ) {
- return linux_syscall ( __NR_read, fd, buf, count );
- }
-
- __kernel_ssize_t linux_write ( int fd, const void *buf,
- __kernel_size_t count ) {
- return linux_syscall ( __NR_write, fd, buf, count );
- }
-
- int linux_fcntl ( int fd, int cmd, ... ) {
- long arg;
- va_list list;
-
- va_start ( list, cmd );
- arg = va_arg ( list, long );
- va_end ( list );
-
- return linux_syscall ( __NR_fcntl, fd, cmd, arg );
- }
-
- int linux_ioctl ( int fd, int request, ... ) {
- void *arg;
- va_list list;
-
- va_start ( list, request );
- arg = va_arg ( list, void * );
- va_end ( list );
-
- return linux_syscall ( __NR_ioctl, fd, request, arg );
- }
-
- int linux_poll ( struct pollfd *fds, nfds_t nfds, int timeout ) {
- return linux_syscall ( __NR_poll, fds, nfds, timeout );
- }
-
- int linux_nanosleep ( const struct timespec *req, struct timespec *rem ) {
- return linux_syscall ( __NR_nanosleep, req, rem );
- }
-
- int linux_usleep ( useconds_t usec ) {
- struct timespec ts = {
- .tv_sec = ( ( long ) ( usec / 1000000 ) ),
- .tv_nsec = ( ( long ) ( usec % 1000000 ) * 1000UL ),
- };
-
- return linux_nanosleep ( &ts, NULL );
- }
-
- int linux_gettimeofday ( struct timeval *tv, struct timezone *tz ) {
- return linux_syscall ( __NR_gettimeofday, tv, tz );
- }
-
- void * linux_mmap ( void *addr, __kernel_size_t length, int prot, int flags,
- int fd, __kernel_off_t offset ) {
- return ( void * ) linux_syscall ( __SYSCALL_mmap, addr, length, prot,
- flags, fd, offset );
- }
-
- void * linux_mremap ( void *old_address, __kernel_size_t old_size,
- __kernel_size_t new_size, int flags ) {
- return ( void * ) linux_syscall ( __NR_mremap, old_address, old_size,
- new_size, flags );
- }
-
- int linux_munmap ( void *addr, __kernel_size_t length ) {
- return linux_syscall ( __NR_munmap, addr, length );
- }
-
- int linux_socket ( int domain, int type_, int protocol ) {
- #ifdef __NR_socket
- return linux_syscall ( __NR_socket, domain, type_, protocol );
- #else
- #ifndef SOCKOP_socket
- # define SOCKOP_socket 1
- #endif
- unsigned long sc_args[] = { domain, type_, protocol };
- return linux_syscall ( __NR_socketcall, SOCKOP_socket, sc_args );
- #endif
- }
-
- int linux_bind ( int fd, const struct sockaddr *addr, socklen_t addrlen ) {
- #ifdef __NR_bind
- return linux_syscall ( __NR_bind, fd, addr, addrlen );
- #else
- #ifndef SOCKOP_bind
- # define SOCKOP_bind 2
- #endif
- unsigned long sc_args[] = { fd, (unsigned long)addr, addrlen };
- return linux_syscall ( __NR_socketcall, SOCKOP_bind, sc_args );
- #endif
- }
-
- ssize_t linux_sendto ( int fd, const void *buf, size_t len, int flags,
- const struct sockaddr *daddr, socklen_t addrlen ) {
- #ifdef __NR_sendto
- return linux_syscall ( __NR_sendto, fd, buf, len, flags,
- daddr, addrlen );
- #else
- #ifndef SOCKOP_sendto
- # define SOCKOP_sendto 11
- #endif
- unsigned long sc_args[] = { fd, (unsigned long)buf, len,
- flags, (unsigned long)daddr, addrlen };
- return linux_syscall ( __NR_socketcall, SOCKOP_sendto, sc_args );
- #endif
- }
|