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* autoload.cc (LoadFuncEx): Define via new LoadFuncEx2 macro.

Browse Source 
(LoadFuncEx2): Adapted from LoadFuncEx.  Provides control of return value for
nonexistent function.
(NtQueryObject): Declare.
(IsDebuggerPresent): Declare via LoadFuncEx2 and always return true if not
available.
* debug.h (being_debugged): Just rely on IsDebuggerPresent return value.
* dtable.cc (handle_to_fn): New function.
(dtable::init_std_file_from_handle): Attempt to derive std handle's name via
handle_to_fn.
(dtable::build_fhandler_from_name): Fill in what we can in path_conv structure
when given a handle and path doesn't exist.
* fhandler.cc (fhandler_base::open): Don't set the file pointer here.  Use
pc->exists () to determine if file exists rather than calling GetFileAttributes
again.
* fhandler.h (fhandler_base::exec_state_isknown): New method.
(fhandler_base::fstat_helper): Add extra arguments to declaration.
(fhandler_base::fstat_by_handle): Declare new method.
(fhandler_base::fstat_by_name): Declare new method.
* fhandler_disk_file (num_entries): Make __stdcall.
(fhandler_base::fstat_by_handle): Define new method.
(fhandler_base::fstat_by_name): Define new method.
(fhandler_base:fstat): Call fstat_by_{handle,name} as appropriate.
(fhandler_disk_file::fstat_helper): Accept extra arguments for filling out stat
structure.  Move handle or name specific stuff to new methods above.
(fhandler_disk_file::open): Use real_path->exists rather than calling
GetFileAttributes again.
* ntdll.h (FILE_NAME_INFORMATION): Define new structure.
(OBJECT_INFORMATION_CLASS): Partially define new enum.
(OBJECT_NAME_INFORMATION): Define new structure.
(NtQueryInformationFile): New declaration.
(NtQueryObject): New declaration.
* path.cc (path_conv::fillin): Define new method.
* path.h (path_conv::fillin): Declare new method.
(path_conv::drive_thpe): Rename from 'get_drive_type'.
(path_conv::volser): Declare new method.
(path_conv::volname): Declare new method.
(path_conv::root_dir): Declare new method.
* syscalls.cc (fstat64): Send real path_conv to fstat as second argument.
This commit is contained in:
Christopher Faylor 2002-05-28 01:55:40 +00:00
parent 74b2f73ea4
commit 2402700d07
32 changed files with 1070 additions and 917 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
winsup/cygserver/shm.cc
View File

@ -1,15 +1,14 @@
/* cygserver_shm.cc: Single unix specification IPC interface for Cygwin
Copyright 2001, 2002 Red Hat, Inc.
Copyright 2001, 2002 Red Hat, Inc.
Originally written by Robert Collins <robert.collins@hotmail.com>
Originally written by Robert Collins <robert.collins@hotmail.com>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifdef __OUTSIDE_CYGWIN__
#undef __INSIDE_CYGWIN__

45
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,48 @@
2002-05-27 Christopher Faylor <cgf@redhat.com>
* autoload.cc (LoadFuncEx): Define via new LoadFuncEx2 macro.
(LoadFuncEx2): Adapted from LoadFuncEx. Provides control of return
value for nonexistent function.
(NtQueryObject): Declare.
(IsDebuggerPresent): Declare via LoadFuncEx2 and always return true if
not available.
* debug.h (being_debugged): Just rely on IsDebuggerPresent return
value.
* dtable.cc (handle_to_fn): New function.
(dtable::init_std_file_from_handle): Attempt to derive std handle's
name via handle_to_fn.
(dtable::build_fhandler_from_name): Fill in what we can in path_conv
structure when given a handle and path doesn't exist.
* fhandler.cc (fhandler_base::open): Don't set the file pointer here.
Use pc->exists () to determine if file exists rather than calling
GetFileAttributes again.
* fhandler.h (fhandler_base::exec_state_isknown): New method.
(fhandler_base::fstat_helper): Add extra arguments to declaration.
(fhandler_base::fstat_by_handle): Declare new method.
(fhandler_base::fstat_by_name): Declare new method.
* fhandler_disk_file (num_entries): Make __stdcall.
(fhandler_base::fstat_by_handle): Define new method.
(fhandler_base::fstat_by_name): Define new method.
(fhandler_base:fstat): Call fstat_by_{handle,name} as appropriate.
(fhandler_disk_file::fstat_helper): Accept extra arguments for filling
out stat structure. Move handle or name specific stuff to new methods
above.
(fhandler_disk_file::open): Use real_path->exists rather than calling
GetFileAttributes again.
* ntdll.h (FILE_NAME_INFORMATION): Define new structure.
(OBJECT_INFORMATION_CLASS): Partially define new enum.
(OBJECT_NAME_INFORMATION): Define new structure.
(NtQueryInformationFile): New declaration.
(NtQueryObject): New declaration.
* path.cc (path_conv::fillin): Define new method.
* path.h (path_conv::fillin): Declare new method.
(path_conv::drive_thpe): Rename from 'get_drive_type'.
(path_conv::volser): Declare new method.
(path_conv::volname): Declare new method.
(path_conv::root_dir): Declare new method.
* syscalls.cc (fstat64): Send real path_conv to fstat as second
argument.
2002-05-24 Pierre Humblet <pierre.humblet@ieee.org>
* security.cc (lsa2str): New function.

14
winsup/cygwin/autoload.cc
View File

@ -72,9 +72,10 @@ details. */
/* Standard DLL load macro. Invokes a fatal warning if the function isn't
found. */
#define LoadDLLfunc(name, n, dllname) LoadDLLfuncEx (name, n, dllname, 0)
#define LoadDLLfuncEx(name, n, dllname, notimp) LoadDLLfuncEx2(name, n, dllname, notimp, 0)
/* Main DLL setup stuff. */
#define LoadDLLfuncEx(name, n, dllname, notimp) \
#define LoadDLLfuncEx2(name, n, dllname, notimp, err) \
LoadDLLprime (dllname, dll_func_load) \
__asm__ (" \n\
.section ." #dllname "_text,\"wx\" \n\
@ -86,7 +87,7 @@ _win32_" mangle (name, n) ": \n\
movl (1f),%eax \n\
call *(%eax) \n\
1:.long ." #dllname "_info \n\
.long " #n "+" #notimp " \n\
.long (" #n "+" #notimp ") | " #err "<<16 \n\
.asciz \"" #name "\" \n\
.text \n\
");
@ -121,11 +122,14 @@ noload: \n\
jz 1f # Nope. \n\
decl %eax # Yes. This is the # of bytes + 1 \n\
popl %edx # Caller's caller \n\
pushl %eax # Save for later \n\
xorl $0xffff,%eax # Only want lower word \n\
addl %eax,%esp # Pop off bytes \n\
movl $127,%eax # ERROR_PROC_NOT_FOUND \n\
pushl %eax # First argument \n\
call _SetLastError@4 # Set it \n\
xor %eax,%eax # Zero functional return \n\
popl %eax # Get back argument \n\
shrl $16,%eax # return value in high order word \n\
jmp *%edx # Return \n\
1: \n\
movl (%edx),%eax # Handle value \n\
@ -373,6 +377,8 @@ LoadDLLfunc (NetUserGetGroups, 28, netapi32)
LoadDLLfunc (NetUserGetInfo, 16, netapi32)
LoadDLLfunc (NetWkstaUserGetInfo, 12, netapi32)
LoadDLLfuncEx (NtQueryInformationFile, 20, ntdll, 1)
LoadDLLfuncEx2 (NtQueryObject, 20, ntdll, 1, 1)
LoadDLLfuncEx (NtCreateToken, 52, ntdll, 1)
LoadDLLfuncEx (NtMapViewOfSection, 40, ntdll, 1)
LoadDLLfuncEx (NtOpenFile, 24, ntdll, 1)
@ -483,7 +489,7 @@ LoadDLLfunc (CoCreateInstance, 20, ole32)
LoadDLLfuncEx (CancelIo, 4, kernel32, 1)
LoadDLLfuncEx (CreateHardLinkA, 12, kernel32, 1)
LoadDLLfuncEx (CreateToolhelp32Snapshot, 8, kernel32, 1)
LoadDLLfuncEx (IsDebuggerPresent, 0, kernel32, 1)
LoadDLLfuncEx2 (IsDebuggerPresent, 0, kernel32, 1, 1)
LoadDLLfuncEx (Process32First, 8, kernel32, 1)
LoadDLLfuncEx (Process32Next, 8, kernel32, 1)
LoadDLLfuncEx (SignalObjectAndWait, 16, kernel32, 1)

13
winsup/cygwin/cygserver_shm.cc
View File

@ -1,15 +1,14 @@
/* cygserver_shm.cc: Single unix specification IPC interface for Cygwin
Copyright 2001, 2002 Red Hat, Inc.
Copyright 2001, 2002 Red Hat, Inc.
Originally written by Robert Collins <robert.collins@hotmail.com>
Originally written by Robert Collins <robert.collins@hotmail.com>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifdef __OUTSIDE_CYGWIN__
#undef __INSIDE_CYGWIN__

2
winsup/cygwin/debug.h
View File

@ -29,7 +29,7 @@ DWORD __stdcall WFMO (DWORD, CONST HANDLE *, BOOL, DWORD) __attribute__ ((regpar
#define _DEBUG_H_
#define being_debugged() \
(IsDebuggerPresent () || GetLastError () == ERROR_PROC_NOT_FOUND)
(IsDebuggerPresent () /* || GetLastError () == ERROR_PROC_NOT_FOUND*/)
void threadname_init ();
HANDLE __stdcall makethread (LPTHREAD_START_ROUTINE, LPVOID, DWORD, const char *) __attribute__ ((regparm(3)));

91
winsup/cygwin/dtable.cc
View File

@ -19,6 +19,8 @@ details. */
#include <fcntl.h>
#include <sys/cygwin.h>
#include <assert.h>
#include <ntdef.h>
#include <winnls.h>
#define USE_SYS_TYPES_FD_SET
#include <winsock.h>
@ -31,10 +33,13 @@ details. */
#include "path.h"
#include "dtable.h"
#include "cygheap.h"
#include "ntdll.h"
static const NO_COPY DWORD std_consts[] = {STD_INPUT_HANDLE, STD_OUTPUT_HANDLE,
STD_ERROR_HANDLE};
static char *handle_to_fn (HANDLE, char *);
/* Set aside space for the table of fds */
void
dtable_init (void)
@ -267,7 +272,7 @@ dtable::init_std_file_from_handle (int fd, HANDLE handle, DWORD myaccess)
else if (GetCommState (handle, &dcb))
name = "/dev/ttyS0"; // FIXME - determine correct device
else
name = "unknown disk file";
name = handle_to_fn (handle, (char *) alloca (MAX_PATH + 100));
path_conv pc;
build_fhandler_from_name (fd, name, handle, pc)->init (handle, myaccess, bin);
@ -286,6 +291,9 @@ dtable::build_fhandler_from_name (int fd, const char *name, HANDLE handle,
return NULL;
}
if (!pc.exists () && handle)
pc.fillin (handle);
fhandler_base *fh = build_fhandler (fd, pc.get_devn (),
pc.return_and_clear_normalized_path (),
pc, pc.get_unitn ());
@ -688,3 +696,84 @@ dtable::vfork_child_fixup ()
return;
}
#if 0
static char *
handle_to_fn (HANDLE h, char *posix_fn)
{
IO_STATUS_BLOCK io;
FILE_NAME_INFORMATION ntfn;
io.Status = 0;
io.Information = 0;
SetLastError (0);
DWORD res = NtQueryInformationFile (h, &io, &ntfn, sizeof (ntfn), 9);
if (res || GetLastError () == ERROR_PROC_NOT_FOUND)
{
strcpy (posix_fn, "some disk file");
return posix_fn;
}
ntfn.FileName[ntfn.FileNameLength / sizeof (WCHAR)] = 0;
char win32_fn[MAX_PATH + 100];
sys_wcstombs (win32_fn, ntfn.FileName, ntfn.FileNameLength);
cygwin_conv_to_full_posix_path (win32_fn, posix_fn);
return posix_fn;
}
#else
#define DEVICE_PREFIX "\\device\\"
#define DEVICE_PREFIX_LEN sizeof(DEVICE_PREFIX) - 1
static char *
handle_to_fn (HANDLE h, char *posix_fn)
{
OBJECT_NAME_INFORMATION *ntfn;
char fnbuf[32768];
memset (fnbuf, 0, sizeof (fnbuf));
ntfn = (OBJECT_NAME_INFORMATION *) fnbuf;
ntfn->Name.MaximumLength = sizeof (fnbuf);
ntfn->Name.Buffer = (WCHAR *) ntfn + 1;
DWORD res = NtQueryObject (h, ObjectNameInformation, ntfn, sizeof (fnbuf), NULL);
if (res)
{
strcpy (posix_fn, "some disk file");
return posix_fn;
}
ntfn->Name.Buffer[ntfn->Name.Length / sizeof (WCHAR)] = 0;
char win32_fn[MAX_PATH + 100];
sys_wcstombs (win32_fn, ntfn->Name.Buffer, ntfn->Name.Length);
if (!strncasematch (win32_fn, DEVICE_PREFIX, DEVICE_PREFIX_LEN)
|| !QueryDosDevice (NULL, fnbuf, sizeof (fnbuf)))
return strcpy (posix_fn, win32_fn);
char *p = strchr (win32_fn + DEVICE_PREFIX_LEN, '\\');
if (!p)
p = strchr (win32_fn + DEVICE_PREFIX_LEN, '\0');
int n = p - win32_fn;
char *w32 = win32_fn;
for (char *s = fnbuf; *s; s = strchr (s, '\0') + 1)
{
char device[MAX_PATH + 10];
device[MAX_PATH + 9] = '\0';
if (strchr (s, ':') == NULL)
continue;
if (!QueryDosDevice (s, device, sizeof (device) - 1))
continue;
if (!strncasematch (device, win32_fn, n) ||
(device[n] != '\0' && (device[n] != '\\' || device[n + 1] != ';')))
continue;
n = strlen (s);
w32 = p - (n + 1);
memcpy (w32, s, n);
p[-1] = '\\';
break;
}
cygwin_conv_to_full_posix_path (w32, posix_fn);
return posix_fn;
}
#endif

16
winsup/cygwin/fhandler.cc
View File

@ -309,7 +309,7 @@ fhandler_base::get_default_fmode (int flags)
/* Open system call handler function. */
int
fhandler_base::open (path_conv *, int flags, mode_t mode)
fhandler_base::open (path_conv *pc, int flags, mode_t mode)
{
int res = 0;
HANDLE x;
@ -318,7 +318,7 @@ fhandler_base::open (path_conv *, int flags, mode_t mode)
int creation_distribution;
SECURITY_ATTRIBUTES sa = sec_none;
syscall_printf ("(%s, %p)", get_win32_name (), flags);
syscall_printf ("(%s, %p) query_open %d", get_win32_name (), flags, get_query_open ());
if (get_win32_name () == NULL)
{
@ -385,7 +385,7 @@ fhandler_base::open (path_conv *, int flags, mode_t mode)
if (get_query_open () &&
isremote () &&
creation_distribution == OPEN_EXISTING &&
GetFileAttributes (get_win32_name ()) == INVALID_FILE_ATTRIBUTES)
!pc->exists ())
{
set_errno (ENOENT);
goto done;
@ -447,16 +447,6 @@ fhandler_base::open (path_conv *, int flags, mode_t mode)
set_w_binary (bin);
syscall_printf ("filemode set to %s", bin ? "binary" : "text");
if (get_device () != FH_TAPE
&& get_device () != FH_FLOPPY
&& get_device () != FH_SERIAL)
{
if (flags & O_APPEND)
SetFilePointer (get_handle(), 0, 0, FILE_END);
else
SetFilePointer (get_handle(), 0, 0, FILE_BEGIN);
}
res = 1;
set_open_status ();
done:

16
winsup/cygwin/fhandler.h
View File

@ -246,13 +246,14 @@ class fhandler_base
}
void set_execable_p () { FHSETF (EXECABL); }
bool dont_care_if_execable () { return FHISSETF (DCEXEC); }
bool exec_state_isknown () { return FHISSETF (DCEXEC) || FHISSETF (EXECABL); }
bool get_append_p () { return FHISSETF (APPEND); }
void set_append_p (int val) { FHCONDSETF (val, APPEND); }
void set_append_p () { FHSETF (APPEND); }
bool get_query_open () { return FHISSETF (QUERYOPEN); }
void set_query_open (int val) { FHCONDSETF (val, QUERYOPEN); }
void set_query_open (bool val) { FHCONDSETF (val, QUERYOPEN); }
bool get_readahead_valid () { return raixget < ralen; }
int puts_readahead (const char *s, size_t len = (size_t) -1);
@ -552,7 +553,18 @@ class fhandler_disk_file: public fhandler_base
int lock (int, struct flock *);
BOOL is_device () { return FALSE; }
int __stdcall fstat (struct __stat64 *buf, path_conv *pc) __attribute__ ((regparm (3)));
int __stdcall fstat_helper (struct __stat64 *buf) __attribute__ ((regparm (2)));
int __stdcall fstat_helper (struct __stat64 *buf, path_conv *pc,
FILETIME ftCreateionTime,
FILETIME ftLastAccessTime,
FILETIME ftLastWriteTime,
DWORD nFileSizeHigh,
DWORD nFileSizeLow,
DWORD nFileIndexHigh = 0,
DWORD nFileIndexLow = 0,
DWORD nNumberOfLinks = 1)
__attribute__ ((regparm (3)));
int __stdcall fstat_by_handle (struct __stat64 *buf, path_conv *pc) __attribute__ ((regparm (3)));
int __stdcall fstat_by_name (struct __stat64 *buf, path_conv *pc) __attribute__ ((regparm (3)));
HANDLE mmap (caddr_t *addr, size_t len, DWORD access, int flags, __off64_t off);
int munmap (HANDLE h, caddr_t addr, size_t len);

288
winsup/cygwin/fhandler_disk_file.cc
View File

@ -31,7 +31,7 @@ details. */
#define _COMPILING_NEWLIB
#include <dirent.h>
static int
static int __stdcall
num_entries (const char *win32_name)
{
WIN32_FIND_DATA buf;
@ -60,7 +60,68 @@ num_entries (const char *win32_name)
return count;
}
int
int __stdcall
fhandler_disk_file::fstat_by_handle (struct __stat64 *buf, path_conv *pc)
{
int res;
BY_HANDLE_FILE_INFORMATION local;
/* NT 3.51 seems to have a bug when attempting to get vol serial
numbers. This loop gets around this. */
for (int i = 0; i < 2; i++)
{
if (!(res = GetFileInformationByHandle (get_handle (), &local)))
break;
if (local.dwVolumeSerialNumber && (long) local.dwVolumeSerialNumber != -1)
break;
}
debug_printf ("%d = GetFileInformationByHandle (%s, %d)",
res, get_win32_name (), get_handle ());
if (res == 0)
/* GetFileInformationByHandle will fail if it's given stdin/out/err
or a pipe*/
{
memset (&local, 0, sizeof (local));
local.nFileSizeLow = GetFileSize (get_handle (), &local.nFileSizeHigh);
}
return fstat_helper (buf, pc,
local.ftCreationTime,
local.ftLastAccessTime,
local.ftLastWriteTime,
local.nFileSizeHigh,
local.nFileSizeLow,
local.nFileIndexHigh,
local.nFileIndexLow,
local.nNumberOfLinks);
}
int __stdcall
fhandler_disk_file::fstat_by_name (struct __stat64 *buf, path_conv *pc)
{
int res;
HANDLE handle;
WIN32_FIND_DATA local;
if ((handle = FindFirstFile (pc->get_win32 (), &local)) == INVALID_HANDLE_VALUE)
{
__seterrno ();
res = -1;
}
else
{
FindClose (handle);
res = fstat_helper (buf, pc,
local.ftCreationTime,
local.ftLastAccessTime,
local.ftLastWriteTime,
local.nFileSizeHigh,
local.nFileSizeLow);
}
return res;
}
int __stdcall
fhandler_disk_file::fstat (struct __stat64 *buf, path_conv *pc)
{
int res = -1;
@ -68,19 +129,29 @@ fhandler_disk_file::fstat (struct __stat64 *buf, path_conv *pc)
__uid16_t uid;
__gid16_t gid;
int open_flags = O_RDONLY | O_BINARY | O_DIROPEN;
bool query_open_already;
if (!pc)
return fstat_helper (buf);
if (get_io_handle ())
return fstat_by_handle (buf, pc);
if ((oret = open (pc, open_flags, 0)))
/* If we don't care if the file is executable or we already know if it is,
then just do a "query open" as it is apparently much faster. */
if (pc->exec_state () != dont_know_if_executable)
set_query_open (query_open_already = true);
else
query_open_already = false;
if (query_open_already && strncasematch (pc->volname (), "FAT", 3))
oret = 0;
else if ((oret = open (pc, open_flags, 0)))
/* ok */;
else
{
int ntsec_atts = 0;
/* If we couldn't open the file, try a "query open" with no permissions.
This will allow us to determine *some* things about the file, at least. */
set_query_open (TRUE);
if ((oret = open (pc, open_flags, 0)))
set_query_open (true);
if (!query_open_already && (oret = open (pc, open_flags, 0)))
/* ok */;
else if (allow_ntsec && pc->has_acls () && get_errno () == EACCES
&& !get_file_attribute (TRUE, get_win32_name (), &ntsec_atts, &uid, &gid)
@ -96,150 +167,49 @@ fhandler_disk_file::fstat (struct __stat64 *buf, path_conv *pc)
set_file_attribute (TRUE, get_win32_name (), ntsec_atts);
}
}
if (oret)
{
res = fstat_helper (buf);
/* The number of links to a directory includes the
number of subdirectories in the directory, since all
those subdirectories point to it.
This is too slow on remote drives, so we do without it and
set the number of links to 2. */
/* Unfortunately the count of 2 confuses `find (1)' command. So
let's try it with `1' as link count. */
if (pc->isdir ())
buf->st_nlink = pc->isremote () ? 1 : num_entries (pc->get_win32 ());
res = fstat_by_handle (buf, pc);
close ();
}
else if (pc->exists ())
{
/* Unfortunately, the above open may fail if the file exists, though.
So we have to care for this case here, too. */
WIN32_FIND_DATA wfd;
HANDLE handle;
buf->st_nlink = 1;
if (pc->isdir ())
buf->st_nlink = pc->isremote () ? 1 : num_entries (pc->get_win32 ());
buf->st_dev = FHDEVN (FH_DISK) << 8;
buf->st_ino = hash_path_name (0, pc->get_win32 ());
if (pc->isdir ())
buf->st_mode = S_IFDIR;
else if (pc->issymlink ())
buf->st_mode = S_IFLNK;
else if (pc->issocket ())
buf->st_mode = S_IFSOCK;
else
buf->st_mode = S_IFREG;
if (!pc->has_acls ()
|| get_file_attribute (TRUE, pc->get_win32 (),
&buf->st_mode, &uid, &gid))
{
buf->st_mode |= STD_RBITS | STD_XBITS;
if (!(pc->has_attribute (FILE_ATTRIBUTE_READONLY)))
buf->st_mode |= STD_WBITS;
if (pc->issymlink ())
buf->st_mode |= S_IRWXU | S_IRWXG | S_IRWXO;
get_file_attribute (FALSE, pc->get_win32 (), NULL, &uid, &gid);
}
buf->st_uid = uid;
buf->st_gid = gid;
if ((handle = FindFirstFile (pc->get_win32 (), &wfd))
!= INVALID_HANDLE_VALUE)
{
/* This is for FAT filesystems, which don't support atime/ctime */
if (wfd.ftLastAccessTime.dwLowDateTime == 0
&& wfd.ftLastAccessTime.dwHighDateTime == 0)
wfd.ftLastAccessTime = wfd.ftLastWriteTime;
if (wfd.ftCreationTime.dwLowDateTime == 0
&& wfd.ftCreationTime.dwHighDateTime == 0)
wfd.ftCreationTime = wfd.ftLastWriteTime;
buf->st_atime = to_time_t (&wfd.ftLastAccessTime);
buf->st_mtime = to_time_t (&wfd.ftLastWriteTime);
buf->st_ctime = to_time_t (&wfd.ftCreationTime);
buf->st_size = wfd.nFileSizeLow;
buf->st_size = ((__off64_t)wfd.nFileSizeHigh << 32)
+ wfd.nFileSizeLow;
buf->st_blksize = S_BLKSIZE;
buf->st_blocks = (buf->st_size + S_BLKSIZE-1) / S_BLKSIZE;
FindClose (handle);
}
res = 0;
}
res = fstat_by_name (buf, pc);
return res;
}
int
fhandler_disk_file::fstat_helper (struct __stat64 *buf)
int __stdcall
fhandler_disk_file::fstat_helper (struct __stat64 *buf, path_conv *pc,
FILETIME ftCreationTime,
FILETIME ftLastAccessTime,
FILETIME ftLastWriteTime,
DWORD nFileSizeHigh,
DWORD nFileSizeLow,
DWORD nFileIndexHigh,
DWORD nFileIndexLow,
DWORD nNumberOfLinks)
{
int res = 0; // avoid a compiler warning
BY_HANDLE_FILE_INFORMATION local;
save_errno saved_errno;
/* NT 3.51 seems to have a bug when attempting to get vol serial
numbers. This loop gets around this. */
for (int i = 0; i < 2; i++)
{
if (!(res = GetFileInformationByHandle (get_handle (), &local)))
break;
if (local.dwVolumeSerialNumber && (long) local.dwVolumeSerialNumber != -1)
break;
}
debug_printf ("%d = GetFileInformationByHandle (%s, %d)",
res, get_win32_name (), get_handle ());
if (res == 0)
{
/* GetFileInformationByHandle will fail if it's given stdin/out/err
or a pipe*/
DWORD lsize, hsize;
if (GetFileType (get_handle ()) != FILE_TYPE_DISK)
buf->st_mode = S_IFCHR;
lsize = GetFileSize (get_handle (), &hsize);
if (lsize == 0xffffffff && GetLastError () != NO_ERROR)
buf->st_mode = S_IFCHR;
else
buf->st_size = ((__off64_t)hsize << 32) + lsize;
/* We expect these to fail! */
buf->st_mode |= STD_RBITS | STD_WBITS;
buf->st_blksize = S_BLKSIZE;
buf->st_ino = get_namehash ();
syscall_printf ("0 = fstat (, %p)", buf);
return 0;
}
if (!get_win32_name ())
{
saved_errno.set (ENOENT);
return -1;
}
/* This is for FAT filesystems, which don't support atime/ctime */
if (local.ftLastAccessTime.dwLowDateTime == 0
&& local.ftLastAccessTime.dwHighDateTime == 0)
local.ftLastAccessTime = local.ftLastWriteTime;
if (local.ftCreationTime.dwLowDateTime == 0
&& local.ftCreationTime.dwHighDateTime == 0)
local.ftCreationTime = local.ftLastWriteTime;
if (ftLastAccessTime.dwLowDateTime == 0
&& ftLastAccessTime.dwHighDateTime == 0)
ftLastAccessTime = ftLastWriteTime;
if (ftCreationTime.dwLowDateTime == 0
&& ftCreationTime.dwHighDateTime == 0)
ftCreationTime = ftLastWriteTime;
buf->st_atime = to_time_t (&local.ftLastAccessTime);
buf->st_mtime = to_time_t (&local.ftLastWriteTime);
buf->st_ctime = to_time_t (&local.ftCreationTime);
buf->st_nlink = local.nNumberOfLinks;
buf->st_dev = local.dwVolumeSerialNumber;
buf->st_size = ((__off64_t)local.nFileSizeHigh << 32)
+ local.nFileSizeLow;
/* Allocate some place to determine the root directory. Need to allocate
enough so that rootdir can add a trailing slash if path starts with \\. */
char root[strlen (get_win32_name ()) + 3];
strcpy (root, get_win32_name ());
buf->st_atime = to_time_t (&ftLastAccessTime);
buf->st_mtime = to_time_t (&ftLastWriteTime);
buf->st_ctime = to_time_t (&ftCreationTime);
buf->st_nlink = nNumberOfLinks;
buf->st_dev = pc->volser ();
buf->st_size = ((__off64_t)nFileSizeHigh << 32) + nFileSizeLow;
/* Assume that if a drive has ACL support it MAY have valid "inodes".
It definitely does not have valid inodes if it does not have ACL
support. */
switch (has_acls () ? GetDriveType (rootdir (root)) : DRIVE_UNKNOWN)
switch (pc->has_acls () && (nFileIndexHigh || nFileIndexLow)
? pc->drive_type () : DRIVE_UNKNOWN)
{
case DRIVE_FIXED:
case DRIVE_REMOVABLE:
@ -247,7 +217,7 @@ fhandler_disk_file::fstat_helper (struct __stat64 *buf)
case DRIVE_RAMDISK:
/* Although the documentation indicates otherwise, it seems like
"inodes" on these devices are persistent, at least across reboots. */
buf->st_ino = local.nFileIndexHigh | local.nFileIndexLow;
buf->st_ino = nFileIndexHigh | nFileIndexLow;
break;
default:
/* Either the nFileIndex* fields are unreliable or unavailable. Use the
@ -257,25 +227,25 @@ fhandler_disk_file::fstat_helper (struct __stat64 *buf)
}
buf->st_blksize = S_BLKSIZE;
buf->st_blocks = (buf->st_size + S_BLKSIZE-1) / S_BLKSIZE;
buf->st_blocks = (buf->st_size + S_BLKSIZE - 1) / S_BLKSIZE;
buf->st_mode = 0;
/* Using a side effect: get_file_attibutes checks for
directory. This is used, to set S_ISVTX, if needed. */
if (local.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
if (pc->fileattr & FILE_ATTRIBUTE_DIRECTORY)
buf->st_mode = S_IFDIR;
else if (get_symlink_p ())
else if (pc->issymlink ())
buf->st_mode = S_IFLNK;
else if (get_socket_p ())
else if (pc->issocket ())
buf->st_mode = S_IFSOCK;
__uid16_t uid;
__gid16_t gid;
if (get_file_attribute (has_acls (), get_win32_name (), &buf->st_mode,
if (get_file_attribute (pc->has_acls (), get_win32_name (), &buf->st_mode,
&uid, &gid) == 0)
{
/* If read-only attribute is set, modify ntsec return value */
if ((local.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
&& !get_symlink_p ())
if ((pc->fileattr & FILE_ATTRIBUTE_READONLY) && !get_symlink_p ())
buf->st_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
if (!(buf->st_mode & S_IFMT))
@ -285,7 +255,7 @@ fhandler_disk_file::fstat_helper (struct __stat64 *buf)
{
buf->st_mode |= STD_RBITS;
if (!(local.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
if (!(pc->fileattr & FILE_ATTRIBUTE_READONLY))
buf->st_mode |= STD_WBITS;
/* | S_IWGRP | S_IWOTH; we don't give write to group etc */
@ -293,18 +263,12 @@ fhandler_disk_file::fstat_helper (struct __stat64 *buf)
buf->st_mode |= S_IFDIR | STD_XBITS;
else if (buf->st_mode & S_IFMT)
/* nothing */;
else if (get_socket_p ())
else if (pc->issocket ())
buf->st_mode |= S_IFSOCK;
else
switch (GetFileType (get_handle ()))
{
case FILE_TYPE_CHAR:
case FILE_TYPE_UNKNOWN:
buf->st_mode |= S_IFCHR;
break;
case FILE_TYPE_DISK:
buf->st_mode |= S_IFREG;
if (!dont_care_if_execable () && !get_execable_p ())
if (!pc->exec_state () == dont_know_if_executable)
{
DWORD cur, done;
char magic[3];
@ -325,22 +289,27 @@ fhandler_disk_file::fstat_helper (struct __stat64 *buf)
SetFilePointer (get_handle(), cur, NULL, FILE_BEGIN);
}
}
if (get_execable_p ())
if (pc->exec_state () == is_executable)
buf->st_mode |= STD_XBITS;
break;
case FILE_TYPE_PIPE:
buf->st_mode |= S_IFSOCK;
break;
}
}
buf->st_uid = uid;
buf->st_gid = gid;
/* The number of links to a directory includes the
number of subdirectories in the directory, since all
those subdirectories point to it.
This is too slow on remote drives, so we do without it and
set the number of links to 2. */
/* Unfortunately the count of 2 confuses `find (1)' command. So
let's try it with `1' as link count. */
if (pc->isdir () && !buf->st_nlink)
buf->st_nlink = pc->isremote () ? 1 : num_entries (pc->get_win32 ());
syscall_printf ("0 = fstat (, %p) st_atime=%x st_size=%D, st_mode=%p, st_ino=%d, sizeof=%d",
buf, buf->st_atime, buf->st_size, buf->st_mode,
(int) buf->st_ino, sizeof (*buf));
return 0;
}
@ -391,8 +360,7 @@ fhandler_disk_file::open (path_conv *real_path, int flags, mode_t mode)
The only known file system to date is the SUN NFS Solstice Client 3.1
which returns a valid handle when trying to open a file in a nonexistent
directory. */
if (real_path->has_buggy_open ()
&& GetFileAttributes (win32_path_name) == INVALID_FILE_ATTRIBUTES)
if (real_path->has_buggy_open () && !real_path->exists ())
{
debug_printf ("Buggy open detected.");
close ();

25
winsup/cygwin/ntdll.h
View File

@ -336,11 +336,31 @@ typedef enum _MEMORY_INFORMATION_CLASS
MemoryBaiscVlmInformation
} MEMORY_INFORMATION_CLASS;
typedef struct _MEMORY_WORKING_SET_LIST {
typedef struct _MEMORY_WORKING_SET_LIST
{
ULONG NumberOfPages;
ULONG WorkingSetList[1];
} MEMORY_WORKING_SET_LIST, *PMEMORY_WORKING_SET_LIST;
typedef struct _FILE_NAME_INFORMATION
{
DWORD FileNameLength;
WCHAR FileName[MAX_PATH + 100];
} FILE_NAME_INFORMATION;
typedef enum _OBJECT_INFORMATION_CLASS
{
ObjectBasicInformation = 0,
ObjectNameInformation = 1,
ObjectHandleInformation = 4
// and many more
} OBJECT_INFORMATION_CLASS;
typedef struct _OBJECT_NAME_INFORMATION
{
UNICODE_STRING Name;
} OBJECT_NAME_INFORMATION;
/* Function declarations for ntdll.dll. These don't appear in any
standard Win32 header. */
extern "C"
@ -368,4 +388,7 @@ extern "C"
OUT PVOID, IN ULONG, OUT PULONG);
NTSTATUS NTAPI ZwQueryVirtualMemory (IN HANDLE, IN PVOID, IN MEMORY_INFORMATION_CLASS,
OUT PVOID, IN ULONG, OUT PULONG);
NTSTATUS NTAPI NtQueryInformationFile (HANDLE, IO_STATUS_BLOCK *, VOID *,
DWORD, DWORD);
NTSTATUS NTAPI NtQueryObject (HANDLE, OBJECT_INFORMATION_CLASS, VOID *, ULONG, ULONG *);
}

17
winsup/cygwin/path.cc
View File

@ -373,6 +373,23 @@ path_conv::return_and_clear_normalized_path ()
return s;
}
void
path_conv::fillin (HANDLE h)
{
BY_HANDLE_FILE_INFORMATION local;
if (!GetFileInformationByHandle (h, &local))
{
fileattr = INVALID_FILE_ATTRIBUTES;
fs.serial = 0;
}
else
{
fileattr = local.dwFileAttributes;
fs.serial = local.dwVolumeSerialNumber;
}
fs.drive_type = DRIVE_UNKNOWN;
}
/* Convert an arbitrary path SRC to a pure Win32 path, suitable for
passing to Win32 API routines.

6
winsup/cygwin/path.h
View File

@ -143,10 +143,14 @@ class path_conv
DWORD get_devn () {return devn == FH_BAD ? (DWORD) FH_DISK : devn;}
short get_unitn () {return devn == FH_BAD ? 0 : unit;}
DWORD file_attributes () {return fileattr;}
DWORD get_drive_type () {return fs.drive_type;}
DWORD drive_type () {return fs.drive_type;}
BOOL fs_fast_ea () {return fs.sym_opt & PC_CHECK_EA;}
void set_path (const char *p) {strcpy (path, p);}
char *return_and_clear_normalized_path ();
const char * root_dir () { return fs.root_dir; }
DWORD volser () { return fs.serial; }
const char *volname () {return fs.name; }
void fillin (HANDLE h);
};
/* Symlink marker */

12
winsup/cygwin/shm.cc
View File

@ -1,14 +1,14 @@
/* shm.cc: Single unix specification IPC interface for Cygwin
Copyright 2001 Red Hat, Inc.
Copyright 2001 Red Hat, Inc.
Originally written by Robert Collins <robert.collins@hotmail.com>
Originally written by Robert Collins <robert.collins@hotmail.com>
This file is part of Cygwin.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include <sys/stat.h>

3
winsup/cygwin/syscalls.cc
View File

@ -991,8 +991,9 @@ fstat64 (int fd, struct __stat64 *buf)
res = -1;
else
{
path_conv pc (cfd->get_win32_name ());
memset (buf, 0, sizeof (struct __stat64));
res = cfd->fstat (buf, NULL);
res = cfd->fstat (buf, &pc);
}
syscall_printf ("%d = fstat (%d, %p)", res, fd, buf);