+++ /dev/null
-/* $Id: fcntl.c,v 1.5 2002/05/17 01:54:39 hyperion Exp $
- */
-/*
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS POSIX+ Subsystem
- * FILE: subsys/psx/lib/psxdll/fcntl/fcntl.c
- * PURPOSE: File control
- * PROGRAMMER: KJK::Hyperion <noog@libero.it>
- * UPDATE HISTORY:
- * 13/02/2002: Created
- * 15/02/2002: Implemented fcntl() (KJK::Hyperion)
- */
-
-#include <ddk/ntddk.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <stdarg.h>
-#include <psx/errno.h>
-#include <psx/stdlib.h>
-#include <psx/fdtable.h>
-#include <psx/pdata.h>
-#include <psx/debug.h>
-
-int fcntl(int fildes, int cmd, ...)
-{
- __fdtable_t *pftFdTable;
- __fildes_t *pfdDescriptor;
- NTSTATUS nErrCode;
- int nRetVal;
- int nThirdArg;
- void *pThirdArg;
- va_list vlArgs;
-
- /* lock the environment */
- __PdxAcquirePdataLock();
- INFO("environment locked");
-
- /* get the file descriptors table */
- pftFdTable = &__PdxGetProcessData()->FdTable;
- INFO("file descriptors table at 0x%08X", pftFdTable);
-
- /* fildes is an invalid descriptor, or it's a closed or uninitialized
- descriptor and the requested operation is not the creation of a new
- descriptor */
- if
- (
- fildes < 0 ||
- fildes >= OPEN_MAX ||
- (
- (cmd != F_NEWFD) &&
- (
- __fdtable_entry_isavail(pftFdTable, fildes) == 0 ||
- __fdtable_entry_get(pftFdTable, fildes) == 0
- )
- )
- )
- {
- INFO("invalid file descriptor");
- errno = EBADF;
- __PdxReleasePdataLock();
- return (-1);
- }
-
- /* get the file descriptor referenced by fildes */
- pfdDescriptor = __fdtable_entry_get(pftFdTable, fildes);
- INFO("file descriptor %d at 0x%08X", fildes, pftFdTable);
-
- /* get third argument as integer */
- va_start(vlArgs, cmd);
- nThirdArg = va_arg(vlArgs, int);
- va_end(vlArgs);
-
- /* get third argument as pointer */
- va_start(vlArgs, cmd);
- pThirdArg = va_arg(vlArgs, void *);
- va_end(vlArgs);
-
- /* initialize return value */
- nRetVal = -1;
-
- switch(cmd)
- {
- case F_DUPFD:
- {
- int nDupFileNo;
- __fildes_t *pfdDupDescriptor;
-
- INFO("requested operation: F_DUPFD");
-
- /* allocate the duplicated descriptor */
- nDupFileNo = __fdtable_entry_add(pftFdTable, nThirdArg, 0, &pfdDupDescriptor);
-
- if(nDupFileNo)
- {
- ERR("__fdtable_entry_add() failed, errno %d", errno);
- break;
- }
-
- /* copy the open flags */
- pfdDupDescriptor->OpenFlags = pfdDescriptor->OpenFlags;
-
- /* clear the FD_CLOEXEC flag */
- pfdDupDescriptor->FdFlags = pfdDescriptor->FdFlags & ~FD_CLOEXEC;
-
- /* duplicate the extra data */
- if(pfdDescriptor->ExtraDataSize != 0 && pfdDescriptor->ExtraData != 0)
- {
- /* allocate space for the duplicated extra data */
- pfdDupDescriptor->ExtraDataSize = pfdDescriptor->ExtraDataSize;
- pfdDupDescriptor->ExtraData = __malloc(pfdDupDescriptor->ExtraDataSize);
-
- /* failure */
- if(pfdDupDescriptor->ExtraData == 0)
- {
- errno = ENOMEM;
- break;
- }
-
- /* copy the extra data */
- memcpy(pfdDupDescriptor->ExtraData, pfdDescriptor->ExtraData, pfdDupDescriptor->ExtraDataSize);
- INFO
- (
- "copied %u bytes from 0x%08X into 0x%08X",
- pfdDupDescriptor->ExtraDataSize,
- pfdDescriptor->ExtraData,
- pfdDupDescriptor->ExtraData
- );
- }
-
- /* duplicate the handle */
- nErrCode = NtDuplicateObject
- (
- NtCurrentProcess(),
- pfdDescriptor->FileHandle,
- NtCurrentProcess(),
- &pfdDupDescriptor->FileHandle,
- 0,
- 0,
- DUPLICATE_SAME_ACCESS /* | DUPLICATE_SAME_ATTRIBUTES */
- );
-
- /* failure */
- if(!NT_SUCCESS(nErrCode))
- {
- __free(pfdDupDescriptor->ExtraData);
- errno = __status_to_errno(nErrCode);
- break;
- }
-
- INFO
- (
- "duplicated handle 0x%08X into handle 0x%08X",
- pfdDescriptor->FileHandle,
- pfdDupDescriptor->FileHandle
- );
-
- /* return the duplicated file number */
- nRetVal = nDupFileNo;
- break;
- }
-
- case F_GETFD:
- {
- INFO("requested operation: F_GETFD");
- nRetVal = pfdDescriptor->FdFlags;
- break;
- }
-
- case F_SETFD:
- {
- INFO("requested operation: F_SETFD");
- pfdDescriptor->FdFlags = nThirdArg;
- nRetVal = 0;
- break;
- }
-
- case F_GETFL:
- {
- INFO("requested operation: F_GETFL");
- nRetVal = pfdDescriptor->OpenFlags;
- break;
- }
-
- case F_SETFL:
- {
- INFO("requested operation: F_SETFL");
- pfdDescriptor->OpenFlags = nThirdArg;
- nRetVal = 0;
- break;
- }
-
- case F_GETLK:
- {
- INFO("requested operation: F_GETLK");
- errno = EINVAL;
- break;
- }
-
- case F_SETLK:
- {
- INFO("requested operation: F_SETLK");
- errno = EINVAL;
- break;
- }
-
- case F_SETLKW:
- {
- INFO("requested operation: F_SETLKW");
- errno = EINVAL;
- break;
- }
-
- case F_NEWFD:
- {
- INFO("requested operation: F_NEWFD");
- /* allocate a new descriptor */
- nRetVal = __fdtable_entry_add(pftFdTable, fildes, (__fildes_t *)pThirdArg, 0);
- break;
- }
-
- case F_DELFD:
- {
- INFO("requested operation: F_DELFD");
- /* invalid return pointer */
- if(pThirdArg == 0)
- {
- errno = EINVAL;
- break;
- }
-
- memcpy((__fildes_t *)pThirdArg, pfdDescriptor, sizeof(*pfdDescriptor));
-
- /* remove file descriptor */
- nRetVal = __fdtable_entry_remove(pftFdTable, fildes);
-
- }
-
- case F_GETALL:
- {
- INFO("requested operation: F_GETALL");
- /* invalid return pointer */
- if(pThirdArg == 0)
- {
- errno = EINVAL;
- break;
- }
-
- /* return a copy of the file descriptor */
- memcpy((__fildes_t *)pThirdArg, pfdDescriptor, sizeof(*pfdDescriptor));
- nRetVal = 0;
-
- break;
- }
-
- case F_SETALL:
- {
- INFO("requested operation: F_SETALL");
- /* invalid file descriptor to copy attributes from */
- if(pThirdArg == 0)
- {
- errno = EINVAL;
- break;
- }
-
- /* copy the attributes of file descriptor from the provided descriptor */
- memcpy(pfdDescriptor, pThirdArg, sizeof(*pfdDescriptor));
- nRetVal = 0;
-
- break;
- }
-
- case F_GETXP:
- {
- INFO("requested operation: F_GETXP");
- /* invalid return pointer */
- if(pThirdArg == 0)
- {
- errno = EINVAL;
- break;
- }
-
- /* return a pointer to the extra data associated to the descriptor */
- *((void **)pThirdArg) = pfdDescriptor->ExtraData;
- nRetVal = 0;
-
- break;
- }
-
- case F_SETXP:
- {
- INFO("requested operation: F_SETXP");
- /* set the pointer to the extra data associated */
- pfdDescriptor->ExtraData = pThirdArg;
- nRetVal = 0;
- break;
- }
-
- case F_GETXS:
- {
- INFO("requested operation: F_GETXS");
- nRetVal = pfdDescriptor->ExtraDataSize;
- break;
- }
-
- case F_SETXS:
- {
- INFO("requested operation: F_SETXS");
- pfdDescriptor->ExtraDataSize = nThirdArg;
- nRetVal = 0;
- break;
- }
-
- case F_GETFH:
- {
- INFO("requested operation: F_GETFH");
- /* invalid return pointer */
- if(pThirdArg == 0)
- {
- errno = EINVAL;
- break;
- }
-
- /* return the handle associated to the descriptor */
- *((void **)pThirdArg) = pfdDescriptor->FileHandle;
- nRetVal = 0;
- break;
- }
-
- case F_SETFH:
- {
- INFO("requested operation: F_SETFH");
- pfdDescriptor->FileHandle = pThirdArg;
- nRetVal = 0;
- break;
- }
-
- default:
- INFO("invalid operation requested");
- errno = EINVAL;
- }
-
- /* unlock the environment */
- __PdxReleasePdataLock();
- INFO("environment unlocked");
-
- return (nRetVal);
-}
-
-/* EOF */
\ No newline at end of file
projects / reactos.git / blobdiff