85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/* libc/sys/linux/io.c - Basic input/output system calls */
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/* Written 2000 by Werner Almesberger */
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#define __KERNEL_PROTOTYPES
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#include <stdarg.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <poll.h>
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#include <machine/syscall.h>
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#define __NR___ioctl __NR_ioctl
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#define __NR___flock __NR_flock
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#define __NR___mknod __NR_mknod
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_syscall3(ssize_t,read,int,fd,void *,buf,size_t,count)
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_syscall3(ssize_t,write,int,fd,const void *,buf,size_t,count)
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_syscall3(int,open,const char *,file,int,flag,mode_t,mode)
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_syscall1(int,close,int,fd)
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_syscall3(off_t,lseek,int,fd,off_t,offset,int,count)
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_syscall0(int,sync)
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_syscall1(int,dup,int,fd)
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_syscall2(int,dup2,int,oldfd,int,newfd)
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_syscall3(int,fcntl,int,fd,int,cmd,long,arg)
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_syscall1(int,fdatasync,int,fd)
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_syscall1(int,fsync,int,fd)
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_syscall3(int,poll,struct pollfd *,fds,nfds_t,nfds,int,timeout)
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#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 2
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_syscall3(ssize_t,readv,int,fd,const struct iovec *,vec,int,count)
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_syscall3(ssize_t,writev,int,fd,const struct iovec *,buf,int,count)
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#endif
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#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 4
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_syscall2(int,ftruncate,int,fd,off_t,len)
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_syscall2(int,truncate,const char *,path,off_t,len)
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#endif
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static _syscall3(int,__ioctl,int,fd,int,request,void *,arg)
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int ioctl(int fd,int request,...)
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{
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va_list ap;
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int res;
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va_start(ap,request);
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res = __ioctl(fd,request,va_arg(ap,void *));
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va_end(ap);
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return res;
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}
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static _syscall2(long,__flock,unsigned int,fd,unsigned int,cmd)
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int flock(int fd,int operation)
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{
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return __flock(fd,operation);
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}
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#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 3
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static _syscall3(int,__mknod,const char *,path,mode_t,mode,dev_t *,dev)
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int mkfifo(const char *path, mode_t mode)
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{
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dev_t dev = 0;
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return __mknod(path, mode | S_IFIFO, &dev);
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}
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#endif
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weak_alias(__libc_close,__close);
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weak_alias(__libc_fcntl,__fcntl);
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weak_alias(__libc_lseek,__lseek);
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weak_alias(__libc_open,__open);
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weak_alias(__libc_read,__read);
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weak_alias(__libc_write,__write);
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weak_alias(__libc_poll,__poll);
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