reactos/posix/lib/psxdll/unistd/write.c
2002-10-29 04:45:58 +00:00

69 lines
1.3 KiB
C

/* $Id: write.c,v 1.6 2002/10/29 04:45:48 rex Exp $
*/
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS POSIX+ Subsystem
* FILE: subsys/psx/lib/psxdll/unistd/write.c
* PURPOSE: Write on a file
* PROGRAMMER: KJK::Hyperion <noog@libero.it>
* UPDATE HISTORY:
* 15/02/2002: Created
* 21/03/2002: Implemented write() (KJK::Hyperion <noog@libero.it>)
*/
#include <ddk/ntddk.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <psx/debug.h>
#include <psx/errno.h>
#include <psx/fdtable.h>
ssize_t write(int fildes, const void *buf, size_t nbyte)
{
__fildes_t fdDescriptor;
NTSTATUS nErrCode;
IO_STATUS_BLOCK isbStatus;
if(nbyte == 0)
return (0);
if(fcntl(fildes, F_GETALL, &fdDescriptor) == -1)
{
ERR("fcntl() failed, errno %d", errno);
return (0);
}
if((fdDescriptor.OpenFlags && O_APPEND) == O_APPEND)
{
TODO("move file pointer to the end");
}
INFO("handle for descriptor %d is %d", fildes, fdDescriptor.FileHandle);
nErrCode = NtWriteFile
(
fdDescriptor.FileHandle,
NULL,
NULL,
NULL,
&isbStatus,
(PVOID)buf,
nbyte,
NULL,
NULL
);
if(!NT_SUCCESS(nErrCode))
{
ERR("NtWriteFile() failed with status 0x%08X", nErrCode);
errno = __status_to_errno(nErrCode);
return (0);
}
return (isbStatus.Information);
}
/* EOF */