/
io.c
3716 lines (3126 loc) · 87.5 KB
/
io.c
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/*
* io.c: File, console and find handles
*
* Author:
* Dick Porter (dick@ximian.com)
*
* (C) 2002 Ximian, Inc.
*/
#include <config.h>
#include <glib.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <fnmatch.h>
#include <stdio.h>
#include <utime.h>
#include <mono/io-layer/wapi.h>
#include <mono/io-layer/wapi-private.h>
#include <mono/io-layer/handles-private.h>
#include <mono/io-layer/io-private.h>
#include <mono/io-layer/timefuncs-private.h>
#include <mono/io-layer/thread-private.h>
#include <mono/utils/strenc.h>
#undef DEBUG
static gboolean _wapi_lock_file_region (int fd, off_t offset, off_t length);
static gboolean _wapi_unlock_file_region (int fd, off_t offset, off_t length);
static void file_close (gpointer handle, gpointer data);
static WapiFileType file_getfiletype(void);
static gboolean file_read(gpointer handle, gpointer buffer,
guint32 numbytes, guint32 *bytesread,
WapiOverlapped *overlapped);
static gboolean file_write(gpointer handle, gconstpointer buffer,
guint32 numbytes, guint32 *byteswritten,
WapiOverlapped *overlapped);
static gboolean file_flush(gpointer handle);
static guint32 file_seek(gpointer handle, gint32 movedistance,
gint32 *highmovedistance, WapiSeekMethod method);
static gboolean file_setendoffile(gpointer handle);
static guint32 file_getfilesize(gpointer handle, guint32 *highsize);
static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
WapiFileTime *last_access,
WapiFileTime *last_write);
static gboolean file_setfiletime(gpointer handle,
const WapiFileTime *create_time,
const WapiFileTime *last_access,
const WapiFileTime *last_write);
/* File handle is only signalled for overlapped IO */
struct _WapiHandleOps _wapi_file_ops = {
file_close, /* close */
NULL, /* signal */
NULL, /* own */
NULL, /* is_owned */
NULL, /* special_wait */
NULL /* prewait */
};
void _wapi_file_details (gpointer handle_info)
{
struct _WapiHandle_file *file = (struct _WapiHandle_file *)handle_info;
g_print ("[%20s] acc: %c%c%c, shr: %c%c%c, attrs: %5u",
file->filename,
file->fileaccess&GENERIC_READ?'R':'.',
file->fileaccess&GENERIC_WRITE?'W':'.',
file->fileaccess&GENERIC_EXECUTE?'X':'.',
file->sharemode&FILE_SHARE_READ?'R':'.',
file->sharemode&FILE_SHARE_WRITE?'W':'.',
file->sharemode&FILE_SHARE_DELETE?'D':'.',
file->attrs);
}
static void console_close (gpointer handle, gpointer data);
static WapiFileType console_getfiletype(void);
static gboolean console_read(gpointer handle, gpointer buffer,
guint32 numbytes, guint32 *bytesread,
WapiOverlapped *overlapped);
static gboolean console_write(gpointer handle, gconstpointer buffer,
guint32 numbytes, guint32 *byteswritten,
WapiOverlapped *overlapped);
/* Console is mostly the same as file, except it can block waiting for
* input or output
*/
struct _WapiHandleOps _wapi_console_ops = {
console_close, /* close */
NULL, /* signal */
NULL, /* own */
NULL, /* is_owned */
NULL, /* special_wait */
NULL /* prewait */
};
void _wapi_console_details (gpointer handle_info)
{
_wapi_file_details (handle_info);
}
/* Find handle has no ops.
*/
struct _WapiHandleOps _wapi_find_ops = {
NULL, /* close */
NULL, /* signal */
NULL, /* own */
NULL, /* is_owned */
NULL, /* special_wait */
NULL /* prewait */
};
static void pipe_close (gpointer handle, gpointer data);
static WapiFileType pipe_getfiletype (void);
static gboolean pipe_read (gpointer handle, gpointer buffer, guint32 numbytes,
guint32 *bytesread, WapiOverlapped *overlapped);
static gboolean pipe_write (gpointer handle, gconstpointer buffer,
guint32 numbytes, guint32 *byteswritten,
WapiOverlapped *overlapped);
/* Pipe handles
*/
struct _WapiHandleOps _wapi_pipe_ops = {
pipe_close, /* close */
NULL, /* signal */
NULL, /* own */
NULL, /* is_owned */
NULL, /* special_wait */
NULL /* prewait */
};
void _wapi_pipe_details (gpointer handle_info)
{
_wapi_file_details (handle_info);
}
static const struct {
/* File, console and pipe handles */
WapiFileType (*getfiletype)(void);
/* File, console and pipe handles */
gboolean (*readfile)(gpointer handle, gpointer buffer,
guint32 numbytes, guint32 *bytesread,
WapiOverlapped *overlapped);
gboolean (*writefile)(gpointer handle, gconstpointer buffer,
guint32 numbytes, guint32 *byteswritten,
WapiOverlapped *overlapped);
gboolean (*flushfile)(gpointer handle);
/* File handles */
guint32 (*seek)(gpointer handle, gint32 movedistance,
gint32 *highmovedistance, WapiSeekMethod method);
gboolean (*setendoffile)(gpointer handle);
guint32 (*getfilesize)(gpointer handle, guint32 *highsize);
gboolean (*getfiletime)(gpointer handle, WapiFileTime *create_time,
WapiFileTime *last_access,
WapiFileTime *last_write);
gboolean (*setfiletime)(gpointer handle,
const WapiFileTime *create_time,
const WapiFileTime *last_access,
const WapiFileTime *last_write);
} io_ops[WAPI_HANDLE_COUNT]={
{NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
/* file */
{file_getfiletype,
file_read, file_write,
file_flush, file_seek,
file_setendoffile,
file_getfilesize,
file_getfiletime,
file_setfiletime},
/* console */
{console_getfiletype,
console_read,
console_write,
NULL, NULL, NULL, NULL, NULL, NULL},
/* thread */
{NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
/* sem */
{NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
/* mutex */
{NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
/* event */
{NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
/* socket (will need at least read and write) */
{NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
/* find */
{NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
/* process */
{NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
/* pipe */
{pipe_getfiletype,
pipe_read,
pipe_write,
NULL, NULL, NULL, NULL, NULL, NULL},
};
static mono_once_t io_ops_once=MONO_ONCE_INIT;
static gboolean lock_while_writing = FALSE;
static void io_ops_init (void)
{
/* _wapi_handle_register_capabilities (WAPI_HANDLE_FILE, */
/* WAPI_HANDLE_CAP_WAIT); */
/* _wapi_handle_register_capabilities (WAPI_HANDLE_CONSOLE, */
/* WAPI_HANDLE_CAP_WAIT); */
if (g_getenv ("MONO_STRICT_IO_EMULATION") != NULL) {
lock_while_writing = TRUE;
}
}
/* Some utility functions.
*/
static guint32 _wapi_stat_to_file_attributes (struct stat *buf)
{
guint32 attrs = 0;
/* FIXME: this could definitely be better */
/* Sockets (0140000) != Directory (040000) + Regular file (0100000) */
if (S_ISSOCK (buf->st_mode))
buf->st_mode &= ~S_IFSOCK; /* don't consider socket protection */
if (S_ISDIR (buf->st_mode))
attrs |= FILE_ATTRIBUTE_DIRECTORY;
else
attrs |= FILE_ATTRIBUTE_ARCHIVE;
if (!(buf->st_mode & S_IWUSR))
attrs |= FILE_ATTRIBUTE_READONLY;
return attrs;
}
static void
_wapi_set_last_error_from_errno (void)
{
SetLastError (_wapi_get_win32_file_error (errno));
}
/* Handle ops.
*/
static void file_close (gpointer handle, gpointer data)
{
struct _WapiHandle_file *file_handle = (struct _WapiHandle_file *)data;
#ifdef DEBUG
g_message("%s: closing file handle %p [%s]", __func__, handle,
file_handle->filename);
#endif
g_free (file_handle->filename);
_wapi_handle_share_release (file_handle->share_info);
close (GPOINTER_TO_UINT(handle));
}
static WapiFileType file_getfiletype(void)
{
return(FILE_TYPE_DISK);
}
static gboolean file_read(gpointer handle, gpointer buffer,
guint32 numbytes, guint32 *bytesread,
WapiOverlapped *overlapped)
{
struct _WapiHandle_file *file_handle;
gboolean ok;
int fd = GPOINTER_TO_UINT(handle);
int ret;
ok=_wapi_lookup_handle (handle, WAPI_HANDLE_FILE,
(gpointer *)&file_handle);
if(ok==FALSE) {
g_warning ("%s: error looking up file handle %p", __func__,
handle);
SetLastError (ERROR_INVALID_HANDLE);
return(FALSE);
}
if(bytesread!=NULL) {
*bytesread=0;
}
if(!(file_handle->fileaccess & GENERIC_READ) &&
!(file_handle->fileaccess & GENERIC_ALL)) {
#ifdef DEBUG
g_message("%s: handle %p doesn't have GENERIC_READ access: %u",
__func__, handle, file_handle->fileaccess);
#endif
SetLastError (ERROR_ACCESS_DENIED);
return(FALSE);
}
do {
ret = read (fd, buffer, numbytes);
} while (ret == -1 && errno == EINTR &&
!_wapi_thread_cur_apc_pending());
if(ret==-1) {
gint err = errno;
#ifdef DEBUG
g_message("%s: read of handle %p error: %s", __func__,
handle, strerror(err));
#endif
SetLastError (_wapi_get_win32_file_error (err));
return(FALSE);
}
if (bytesread != NULL) {
*bytesread = ret;
}
return(TRUE);
}
static gboolean file_write(gpointer handle, gconstpointer buffer,
guint32 numbytes, guint32 *byteswritten,
WapiOverlapped *overlapped G_GNUC_UNUSED)
{
struct _WapiHandle_file *file_handle;
gboolean ok;
int ret;
off_t current_pos;
int fd = GPOINTER_TO_UINT(handle);
ok=_wapi_lookup_handle (handle, WAPI_HANDLE_FILE,
(gpointer *)&file_handle);
if(ok==FALSE) {
g_warning ("%s: error looking up file handle %p", __func__,
handle);
SetLastError (ERROR_INVALID_HANDLE);
return(FALSE);
}
if(byteswritten!=NULL) {
*byteswritten=0;
}
if(!(file_handle->fileaccess & GENERIC_WRITE) &&
!(file_handle->fileaccess & GENERIC_ALL)) {
#ifdef DEBUG
g_message("%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
#endif
SetLastError (ERROR_ACCESS_DENIED);
return(FALSE);
}
if (lock_while_writing) {
/* Need to lock the region we're about to write to,
* because we only do advisory locking on POSIX
* systems
*/
current_pos = lseek (fd, (off_t)0, SEEK_CUR);
if (current_pos == -1) {
#ifdef DEBUG
g_message ("%s: handle %p lseek failed: %s", __func__,
handle, strerror (errno));
#endif
_wapi_set_last_error_from_errno ();
return(FALSE);
}
if (_wapi_lock_file_region (fd, current_pos,
numbytes) == FALSE) {
/* The error has already been set */
return(FALSE);
}
}
do {
ret = write (fd, buffer, numbytes);
} while (ret == -1 && errno == EINTR &&
!_wapi_thread_cur_apc_pending());
if (lock_while_writing) {
_wapi_unlock_file_region (fd, current_pos, numbytes);
}
if (ret == -1) {
if (errno == EINTR) {
ret = 0;
} else {
_wapi_set_last_error_from_errno ();
#ifdef DEBUG
g_message("%s: write of handle %p error: %s",
__func__, handle, strerror(errno));
#endif
return(FALSE);
}
}
if (byteswritten != NULL) {
*byteswritten = ret;
}
return(TRUE);
}
static gboolean file_flush(gpointer handle)
{
struct _WapiHandle_file *file_handle;
gboolean ok;
int ret;
int fd = GPOINTER_TO_UINT(handle);
ok=_wapi_lookup_handle (handle, WAPI_HANDLE_FILE,
(gpointer *)&file_handle);
if(ok==FALSE) {
g_warning ("%s: error looking up file handle %p", __func__,
handle);
SetLastError (ERROR_INVALID_HANDLE);
return(FALSE);
}
if(!(file_handle->fileaccess & GENERIC_WRITE) &&
!(file_handle->fileaccess & GENERIC_ALL)) {
#ifdef DEBUG
g_message("%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
#endif
SetLastError (ERROR_ACCESS_DENIED);
return(FALSE);
}
ret=fsync(fd);
if (ret==-1) {
#ifdef DEBUG
g_message("%s: fsync of handle %p error: %s", __func__, handle,
strerror(errno));
#endif
_wapi_set_last_error_from_errno ();
return(FALSE);
}
return(TRUE);
}
static guint32 file_seek(gpointer handle, gint32 movedistance,
gint32 *highmovedistance, WapiSeekMethod method)
{
struct _WapiHandle_file *file_handle;
gboolean ok;
off_t offset, newpos;
int whence;
guint32 ret;
int fd = GPOINTER_TO_UINT(handle);
ok=_wapi_lookup_handle (handle, WAPI_HANDLE_FILE,
(gpointer *)&file_handle);
if(ok==FALSE) {
g_warning ("%s: error looking up file handle %p", __func__,
handle);
SetLastError (ERROR_INVALID_HANDLE);
return(INVALID_SET_FILE_POINTER);
}
if(!(file_handle->fileaccess & GENERIC_READ) &&
!(file_handle->fileaccess & GENERIC_WRITE) &&
!(file_handle->fileaccess & GENERIC_ALL)) {
#ifdef DEBUG
g_message ("%s: handle %p doesn't have GENERIC_READ or GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
#endif
SetLastError (ERROR_ACCESS_DENIED);
return(INVALID_SET_FILE_POINTER);
}
switch(method) {
case FILE_BEGIN:
whence=SEEK_SET;
break;
case FILE_CURRENT:
whence=SEEK_CUR;
break;
case FILE_END:
whence=SEEK_END;
break;
default:
#ifdef DEBUG
g_message("%s: invalid seek type %d", __func__, method);
#endif
SetLastError (ERROR_INVALID_PARAMETER);
return(INVALID_SET_FILE_POINTER);
}
#ifdef HAVE_LARGE_FILE_SUPPORT
if(highmovedistance==NULL) {
offset=movedistance;
#ifdef DEBUG
g_message("%s: setting offset to %lld (low %d)", __func__,
offset, movedistance);
#endif
} else {
offset=((gint64) *highmovedistance << 32) | (guint32)movedistance;
#ifdef DEBUG
g_message("%s: setting offset to %lld 0x%llx (high %d 0x%x, low %d 0x%x)", __func__, offset, offset, *highmovedistance, *highmovedistance, movedistance, movedistance);
#endif
}
#else
offset=movedistance;
#endif
#ifdef DEBUG
#ifdef HAVE_LARGE_FILE_SUPPORT
g_message("%s: moving handle %p by %lld bytes from %d", __func__,
handle, offset, whence);
#else
g_message("%s: moving handle %p fd %d by %ld bytes from %d", __func__,
handle, offset, whence);
#endif
#endif
newpos=lseek(fd, offset, whence);
if(newpos==-1) {
#ifdef DEBUG
g_message("%s: lseek on handle %p returned error %s",
__func__, handle, strerror(errno));
#endif
_wapi_set_last_error_from_errno ();
return(INVALID_SET_FILE_POINTER);
}
#ifdef DEBUG
#ifdef HAVE_LARGE_FILE_SUPPORT
g_message("%s: lseek returns %lld", __func__, newpos);
#else
g_message ("%s: lseek returns %ld", __func__, newpos);
#endif
#endif
#ifdef HAVE_LARGE_FILE_SUPPORT
ret=newpos & 0xFFFFFFFF;
if(highmovedistance!=NULL) {
*highmovedistance=newpos>>32;
}
#else
ret=newpos;
if(highmovedistance!=NULL) {
/* Accurate, but potentially dodgy :-) */
*highmovedistance=0;
}
#endif
#ifdef DEBUG
g_message ("%s: move of handle %p returning %d/%d", __func__,
handle, ret, highmovedistance==NULL?0:*highmovedistance);
#endif
return(ret);
}
static gboolean file_setendoffile(gpointer handle)
{
struct _WapiHandle_file *file_handle;
gboolean ok;
struct stat statbuf;
off_t size, pos;
int ret;
int fd = GPOINTER_TO_UINT(handle);
ok=_wapi_lookup_handle (handle, WAPI_HANDLE_FILE,
(gpointer *)&file_handle);
if(ok==FALSE) {
g_warning ("%s: error looking up file handle %p", __func__,
handle);
SetLastError (ERROR_INVALID_HANDLE);
return(FALSE);
}
if(!(file_handle->fileaccess & GENERIC_WRITE) &&
!(file_handle->fileaccess & GENERIC_ALL)) {
#ifdef DEBUG
g_message("%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
#endif
SetLastError (ERROR_ACCESS_DENIED);
return(FALSE);
}
/* Find the current file position, and the file length. If
* the file position is greater than the length, write to
* extend the file with a hole. If the file position is less
* than the length, truncate the file.
*/
ret=fstat(fd, &statbuf);
if(ret==-1) {
#ifdef DEBUG
g_message ("%s: handle %p fstat failed: %s", __func__,
handle, strerror(errno));
#endif
_wapi_set_last_error_from_errno ();
return(FALSE);
}
size=statbuf.st_size;
pos=lseek(fd, (off_t)0, SEEK_CUR);
if(pos==-1) {
#ifdef DEBUG
g_message("%s: handle %p lseek failed: %s", __func__,
handle, strerror(errno));
#endif
_wapi_set_last_error_from_errno ();
return(FALSE);
}
if(pos>size) {
/* Extend the file. Use write() here, because some
* manuals say that ftruncate() behaviour is undefined
* when the file needs extending. The POSIX spec says
* that on XSI-conformant systems it extends, so if
* every system we care about conforms, then we can
* drop this write.
*/
do {
ret = write (fd, "", 1);
} while (ret == -1 && errno == EINTR &&
!_wapi_thread_cur_apc_pending());
if(ret==-1) {
#ifdef DEBUG
g_message("%s: handle %p extend write failed: %s", __func__, handle, strerror(errno));
#endif
_wapi_set_last_error_from_errno ();
return(FALSE);
}
}
/* always truncate, because the extend write() adds an extra
* byte to the end of the file
*/
do {
ret=ftruncate(fd, pos);
}
while (ret==-1 && errno==EINTR && !_wapi_thread_cur_apc_pending());
if(ret==-1) {
#ifdef DEBUG
g_message("%s: handle %p ftruncate failed: %s", __func__,
handle, strerror(errno));
#endif
_wapi_set_last_error_from_errno ();
return(FALSE);
}
return(TRUE);
}
static guint32 file_getfilesize(gpointer handle, guint32 *highsize)
{
struct _WapiHandle_file *file_handle;
gboolean ok;
struct stat statbuf;
guint32 size;
int ret;
int fd = GPOINTER_TO_UINT(handle);
ok=_wapi_lookup_handle (handle, WAPI_HANDLE_FILE,
(gpointer *)&file_handle);
if(ok==FALSE) {
g_warning ("%s: error looking up file handle %p", __func__,
handle);
SetLastError (ERROR_INVALID_HANDLE);
return(INVALID_FILE_SIZE);
}
if(!(file_handle->fileaccess & GENERIC_READ) &&
!(file_handle->fileaccess & GENERIC_WRITE) &&
!(file_handle->fileaccess & GENERIC_ALL)) {
#ifdef DEBUG
g_message("%s: handle %p doesn't have GENERIC_READ or GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
#endif
SetLastError (ERROR_ACCESS_DENIED);
return(INVALID_FILE_SIZE);
}
/* If the file has a size with the low bits 0xFFFFFFFF the
* caller can't tell if this is an error, so clear the error
* value
*/
SetLastError (ERROR_SUCCESS);
ret = fstat(fd, &statbuf);
if (ret == -1) {
#ifdef DEBUG
g_message ("%s: handle %p fstat failed: %s", __func__,
handle, strerror(errno));
#endif
_wapi_set_last_error_from_errno ();
return(INVALID_FILE_SIZE);
}
#ifdef HAVE_LARGE_FILE_SUPPORT
size = statbuf.st_size & 0xFFFFFFFF;
if (highsize != NULL) {
*highsize = statbuf.st_size>>32;
}
#else
if (highsize != NULL) {
/* Accurate, but potentially dodgy :-) */
*highsize = 0;
}
size = statbuf.st_size;
#endif
#ifdef DEBUG
g_message ("%s: Returning size %d/%d", __func__, size, *highsize);
#endif
return(size);
}
static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
WapiFileTime *last_access,
WapiFileTime *last_write)
{
struct _WapiHandle_file *file_handle;
gboolean ok;
struct stat statbuf;
guint64 create_ticks, access_ticks, write_ticks;
int ret;
int fd = GPOINTER_TO_UINT(handle);
ok=_wapi_lookup_handle (handle, WAPI_HANDLE_FILE,
(gpointer *)&file_handle);
if(ok==FALSE) {
g_warning ("%s: error looking up file handle %p", __func__,
handle);
SetLastError (ERROR_INVALID_HANDLE);
return(FALSE);
}
if(!(file_handle->fileaccess & GENERIC_READ) &&
!(file_handle->fileaccess & GENERIC_ALL)) {
#ifdef DEBUG
g_message("%s: handle %p doesn't have GENERIC_READ access: %u",
__func__, handle, file_handle->fileaccess);
#endif
SetLastError (ERROR_ACCESS_DENIED);
return(FALSE);
}
ret=fstat(fd, &statbuf);
if(ret==-1) {
#ifdef DEBUG
g_message("%s: handle %p fstat failed: %s", __func__, handle,
strerror(errno));
#endif
_wapi_set_last_error_from_errno ();
return(FALSE);
}
#ifdef DEBUG
g_message("%s: atime: %ld ctime: %ld mtime: %ld", __func__,
statbuf.st_atime, statbuf.st_ctime,
statbuf.st_mtime);
#endif
/* Try and guess a meaningful create time by using the older
* of atime or ctime
*/
/* The magic constant comes from msdn documentation
* "Converting a time_t Value to a File Time"
*/
if(statbuf.st_atime < statbuf.st_ctime) {
create_ticks=((guint64)statbuf.st_atime*10000000)
+ 116444736000000000ULL;
} else {
create_ticks=((guint64)statbuf.st_ctime*10000000)
+ 116444736000000000ULL;
}
access_ticks=((guint64)statbuf.st_atime*10000000)+116444736000000000ULL;
write_ticks=((guint64)statbuf.st_mtime*10000000)+116444736000000000ULL;
#ifdef DEBUG
g_message("%s: aticks: %llu cticks: %llu wticks: %llu", __func__,
access_ticks, create_ticks, write_ticks);
#endif
if(create_time!=NULL) {
create_time->dwLowDateTime = create_ticks & 0xFFFFFFFF;
create_time->dwHighDateTime = create_ticks >> 32;
}
if(last_access!=NULL) {
last_access->dwLowDateTime = access_ticks & 0xFFFFFFFF;
last_access->dwHighDateTime = access_ticks >> 32;
}
if(last_write!=NULL) {
last_write->dwLowDateTime = write_ticks & 0xFFFFFFFF;
last_write->dwHighDateTime = write_ticks >> 32;
}
return(TRUE);
}
static gboolean file_setfiletime(gpointer handle,
const WapiFileTime *create_time G_GNUC_UNUSED,
const WapiFileTime *last_access,
const WapiFileTime *last_write)
{
struct _WapiHandle_file *file_handle;
gboolean ok;
struct utimbuf utbuf;
struct stat statbuf;
guint64 access_ticks, write_ticks;
int ret;
int fd = GPOINTER_TO_UINT(handle);
ok=_wapi_lookup_handle (handle, WAPI_HANDLE_FILE,
(gpointer *)&file_handle);
if(ok==FALSE) {
g_warning ("%s: error looking up file handle %p", __func__,
handle);
SetLastError (ERROR_INVALID_HANDLE);
return(FALSE);
}
if(!(file_handle->fileaccess & GENERIC_WRITE) &&
!(file_handle->fileaccess & GENERIC_ALL)) {
#ifdef DEBUG
g_message("%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
#endif
SetLastError (ERROR_ACCESS_DENIED);
return(FALSE);
}
if(file_handle->filename == NULL) {
#ifdef DEBUG
g_message("%s: handle %p unknown filename", __func__, handle);
#endif
SetLastError (ERROR_INVALID_HANDLE);
return(FALSE);
}
/* Get the current times, so we can put the same times back in
* the event that one of the FileTime structs is NULL
*/
ret=fstat (fd, &statbuf);
if(ret==-1) {
#ifdef DEBUG
g_message("%s: handle %p fstat failed: %s", __func__, handle,
strerror(errno));
#endif
SetLastError (ERROR_INVALID_PARAMETER);
return(FALSE);
}
if(last_access!=NULL) {
access_ticks=((guint64)last_access->dwHighDateTime << 32) +
last_access->dwLowDateTime;
/* This is (time_t)0. We can actually go to INT_MIN,
* but this will do for now.
*/
if (access_ticks < 116444736000000000ULL) {
#ifdef DEBUG
g_message ("%s: attempt to set access time too early",
__func__);
#endif
SetLastError (ERROR_INVALID_PARAMETER);
return(FALSE);
}
utbuf.actime=(access_ticks - 116444736000000000ULL) / 10000000;
} else {
utbuf.actime=statbuf.st_atime;
}
if(last_write!=NULL) {
write_ticks=((guint64)last_write->dwHighDateTime << 32) +
last_write->dwLowDateTime;
/* This is (time_t)0. We can actually go to INT_MIN,
* but this will do for now.
*/
if (write_ticks < 116444736000000000ULL) {
#ifdef DEBUG
g_message ("%s: attempt to set write time too early",
__func__);
#endif
SetLastError (ERROR_INVALID_PARAMETER);
return(FALSE);
}
utbuf.modtime=(write_ticks - 116444736000000000ULL) / 10000000;
} else {
utbuf.modtime=statbuf.st_mtime;
}
#ifdef DEBUG
g_message("%s: setting handle %p access %ld write %ld", __func__,
handle, utbuf.actime, utbuf.modtime);
#endif
ret=utime(file_handle->filename, &utbuf);
if(ret==-1) {
#ifdef DEBUG
g_message("%s: handle %p [%s] utime failed: %s", __func__,
handle, file_handle->filename, strerror(errno));
#endif
SetLastError (ERROR_INVALID_PARAMETER);
return(FALSE);
}
return(TRUE);
}
static void console_close (gpointer handle, gpointer data)
{
struct _WapiHandle_file *console_handle = (struct _WapiHandle_file *)data;
#ifdef DEBUG
g_message("%s: closing console handle %p", __func__, handle);
#endif
g_free (console_handle->filename);
close (GPOINTER_TO_UINT(handle));
}
static WapiFileType console_getfiletype(void)
{
return(FILE_TYPE_CHAR);
}
static gboolean console_read(gpointer handle, gpointer buffer,
guint32 numbytes, guint32 *bytesread,
WapiOverlapped *overlapped G_GNUC_UNUSED)
{
struct _WapiHandle_file *console_handle;
gboolean ok;
int ret;
int fd = GPOINTER_TO_UINT(handle);
ok=_wapi_lookup_handle (handle, WAPI_HANDLE_CONSOLE,
(gpointer *)&console_handle);
if(ok==FALSE) {
g_warning ("%s: error looking up console handle %p", __func__,
handle);
SetLastError (ERROR_INVALID_HANDLE);
return(FALSE);
}
if(bytesread!=NULL) {
*bytesread=0;
}
if(!(console_handle->fileaccess & GENERIC_READ) &&
!(console_handle->fileaccess & GENERIC_ALL)) {
#ifdef DEBUG
g_message ("%s: handle %p doesn't have GENERIC_READ access: %u",
__func__, handle, console_handle->fileaccess);
#endif
SetLastError (ERROR_ACCESS_DENIED);
return(FALSE);
}
do {
ret=read(fd, buffer, numbytes);
} while (ret==-1 && errno==EINTR && !_wapi_thread_cur_apc_pending());
if(ret==-1) {
#ifdef DEBUG
g_message("%s: read of handle %p error: %s", __func__, handle,
strerror(errno));
#endif
_wapi_set_last_error_from_errno ();
return(FALSE);
}