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authorcvs2svn <>2008-12-22 22:45:57 +0300
committercvs2svn <>2008-12-22 22:45:57 +0300
commit0f285615efa16c783821cd87a1fdabe4913da9a7 (patch)
tree0108a4b20fb3c5414c4e221ff251a92050bd104d /winsup/cygwin/syscalls.cc
parent272fac20e743611550c6fad64f054934da6fd4bc (diff)
This commit was manufactured by cvs2svn to create branch 'newlib-newlib-1_17_0
1_17_0-arc'. Sprout from master 2008-12-22 19:45:56 UTC Jeff Johnston <jjohnstn@redhat.com> '' Cherrypick from cygnus 1999-05-03 07:29:06 UTC Richard Henderson <rth@redhat.com> '19990502 sourceware import': README config/mt-d30v config/mt-netware config/mt-ospace etc/add-log.el etc/add-log.vi etc/configbuild.ein etc/configbuild.fig etc/configbuild.jin etc/configbuild.tin etc/configdev.ein etc/configdev.fig etc/configdev.jin etc/configdev.tin makefile.vms Delete: djunpack.bat include/COPYING include/COPYING3 include/ChangeLog include/ChangeLog-9103 include/MAINTAINERS include/alloca-conf.h include/ansidecl.h include/aout/ChangeLog include/aout/adobe.h include/aout/aout64.h include/aout/ar.h include/aout/dynix3.h include/aout/encap.h include/aout/host.h include/aout/hp.h include/aout/hp300hpux.h include/aout/hppa.h include/aout/ranlib.h include/aout/reloc.h include/aout/stab.def include/aout/stab_gnu.h include/aout/sun4.h include/bfdlink.h include/binary-io.h include/bout.h include/coff/ChangeLog include/coff/ChangeLog-9103 include/coff/alpha.h include/coff/apollo.h include/coff/arm.h include/coff/aux-coff.h include/coff/ecoff.h include/coff/external.h include/coff/go32exe.h include/coff/h8300.h include/coff/h8500.h include/coff/i386.h include/coff/i860.h include/coff/i960.h include/coff/ia64.h include/coff/internal.h include/coff/m68k.h include/coff/m88k.h include/coff/maxq.h include/coff/mcore.h include/coff/mips.h include/coff/mipspe.h include/coff/or32.h include/coff/pe.h include/coff/powerpc.h include/coff/rs6000.h include/coff/rs6k64.h include/coff/sh.h include/coff/sparc.h include/coff/sym.h include/coff/symconst.h include/coff/ti.h include/coff/tic30.h include/coff/tic4x.h include/coff/tic54x.h include/coff/tic80.h include/coff/w65.h include/coff/we32k.h include/coff/x86_64.h include/coff/xcoff.h include/coff/z80.h include/coff/z8k.h include/demangle.h include/dis-asm.h include/dyn-string.h include/elf/ChangeLog include/elf/ChangeLog-9103 include/elf/alpha.h 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winsup/w32api/lib/igmpagnt.def winsup/w32api/lib/imagehlp.def winsup/w32api/lib/imm32.def winsup/w32api/lib/iphlpapi.def winsup/w32api/lib/kernel32.def winsup/w32api/lib/largeint.c winsup/w32api/lib/lz32.def winsup/w32api/lib/mapi32.def winsup/w32api/lib/mfcuia32.def winsup/w32api/lib/mgmtapi.def winsup/w32api/lib/mlang-uuid.c winsup/w32api/lib/mpr.def winsup/w32api/lib/mprapi.def winsup/w32api/lib/mqrt.def winsup/w32api/lib/msacm32.def winsup/w32api/lib/mscms.def winsup/w32api/lib/mshtml-uuid.c winsup/w32api/lib/msimg32.def winsup/w32api/lib/msvcp60.def winsup/w32api/lib/msvfw32.def winsup/w32api/lib/mswsock.def winsup/w32api/lib/msxml-uuid.c winsup/w32api/lib/nddeapi.def winsup/w32api/lib/netapi32.def winsup/w32api/lib/ntdll.def winsup/w32api/lib/oaidl-uuid.c winsup/w32api/lib/objidl-uuid.c winsup/w32api/lib/objsafe-uuid.c winsup/w32api/lib/ocidl-uuid.c winsup/w32api/lib/odbc32.def winsup/w32api/lib/odbccp32.def winsup/w32api/lib/ole32.def winsup/w32api/lib/oleacc-uuid.c winsup/w32api/lib/oleacc.def winsup/w32api/lib/oleaut32.def winsup/w32api/lib/olecli32.def winsup/w32api/lib/olectlid-uuid.c winsup/w32api/lib/oledlg.def winsup/w32api/lib/oleidl-uuid.c winsup/w32api/lib/olepro32.def winsup/w32api/lib/olesvr32.def winsup/w32api/lib/opengl32.def winsup/w32api/lib/penwin32.def winsup/w32api/lib/pkpd32.def winsup/w32api/lib/power-uuid.c winsup/w32api/lib/powrprof.def winsup/w32api/lib/psapi.def winsup/w32api/lib/quartz.def winsup/w32api/lib/rapi.def winsup/w32api/lib/rasapi32.def winsup/w32api/lib/rasdlg.def winsup/w32api/lib/res.rc winsup/w32api/lib/rpcdce4.def winsup/w32api/lib/rpcns4.def winsup/w32api/lib/rpcrt4.def winsup/w32api/lib/rtm.def winsup/w32api/lib/rtutils.def winsup/w32api/lib/scrnsave.c winsup/w32api/lib/secur32.def winsup/w32api/lib/servprov-uuid.c winsup/w32api/lib/setupapi.def winsup/w32api/lib/shell32.c winsup/w32api/lib/shell32.def winsup/w32api/lib/shfolder.def winsup/w32api/lib/shlwapi.def winsup/w32api/lib/snmpapi.def winsup/w32api/lib/svrapi.def winsup/w32api/lib/tapi32.def winsup/w32api/lib/test.c winsup/w32api/lib/th32.def winsup/w32api/lib/thunk32.def winsup/w32api/lib/unknwn-uuid.c winsup/w32api/lib/url.def winsup/w32api/lib/urlmon-uuid.c winsup/w32api/lib/user32.def winsup/w32api/lib/userenv.def winsup/w32api/lib/usp10.def winsup/w32api/lib/uxtheme.def winsup/w32api/lib/vdmdbg.def winsup/w32api/lib/version.def winsup/w32api/lib/vfw32.mri winsup/w32api/lib/win32spl.def winsup/w32api/lib/wininet.def winsup/w32api/lib/winmm.def winsup/w32api/lib/winspool.def winsup/w32api/lib/winstrm.def winsup/w32api/lib/wldap32.def winsup/w32api/lib/wow32.def winsup/w32api/lib/ws2_32.c winsup/w32api/lib/ws2_32.def winsup/w32api/lib/wsnmp32.def winsup/w32api/lib/wsock32.def winsup/w32api/lib/wst.def winsup/w32api/lib/wtsapi32.def
Diffstat (limited to 'winsup/cygwin/syscalls.cc')
-rw-r--r--winsup/cygwin/syscalls.cc3893
1 files changed, 0 insertions, 3893 deletions
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
deleted file mode 100644
index 7100ce36b..000000000
--- a/winsup/cygwin/syscalls.cc
+++ /dev/null
@@ -1,3893 +0,0 @@
-/* syscalls.cc: syscalls
-
- Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007, 2008 Red Hat, Inc.
-
-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. */
-
-#define fstat __FOOfstat__
-#define lstat __FOOlstat__
-#define stat __FOOstat__
-#define _close __FOO_close__
-#define _lseek __FOO_lseek__
-#define _open __FOO_open__
-#define _read __FOO_read__
-#define _write __FOO_write__
-#define _open64 __FOO_open64__
-#define _lseek64 __FOO_lseek64__
-#define _fstat64 __FOO_fstat64__
-#define pread __FOO_pread
-#define pwrite __FOO_pwrite
-
-#include "winsup.h"
-#include "miscfuncs.h"
-#include <sys/stat.h>
-#include <sys/vfs.h> /* needed for statfs */
-#include <sys/statvfs.h> /* needed for statvfs */
-#include <stdlib.h>
-#include <stdio.h>
-#include <process.h>
-#include <utmp.h>
-#include <utmpx.h>
-#include <sys/uio.h>
-#include <ctype.h>
-#include <unistd.h>
-#include <sys/wait.h>
-#include <rpc.h>
-#include "ntdll.h"
-
-#undef fstat
-#undef lstat
-#undef stat
-#undef pread
-#undef pwrite
-
-#include <cygwin/version.h>
-#include "cygerrno.h"
-#include "perprocess.h"
-#include "security.h"
-#include "path.h"
-#include "fhandler.h"
-#include "dtable.h"
-#include "sigproc.h"
-#include "pinfo.h"
-#include "shared_info.h"
-#include "cygheap.h"
-#include "pwdgrp.h"
-#include "cpuid.h"
-#include "registry.h"
-#include "environ.h"
-#include "tls_pbuf.h"
-
-#undef _close
-#undef _lseek
-#undef _open
-#undef _read
-#undef _write
-#undef _open64
-#undef _lseek64
-#undef _fstat64
-
-suffix_info stat_suffixes[] =
-{
- suffix_info ("", 1),
- suffix_info (".exe", 1),
- suffix_info (NULL)
-};
-
-SYSTEM_INFO system_info;
-
-static int __stdcall mknod_worker (const char *, mode_t, mode_t, _major_t,
- _minor_t);
-
-/* Close all files and process any queued deletions.
- Lots of unix style applications will open a tmp file, unlink it,
- but never call close. This function is called by _exit to
- ensure we don't leave any such files lying around. */
-
-void __stdcall
-close_all_files (bool norelease)
-{
- cygheap->fdtab.lock ();
-
- semaphore::terminate ();
-
- fhandler_base *fh;
- HANDLE h = NULL;
-
- for (int i = 0; i < (int) cygheap->fdtab.size; i++)
- if ((fh = cygheap->fdtab[i]) != NULL)
- {
-#ifdef DEBUGGING
- debug_printf ("closing fd %d", i);
-#endif
- if (i == 2)
- DuplicateHandle (GetCurrentProcess (), fh->get_output_handle (), GetCurrentProcess (), &h, 0, false,
- DUPLICATE_SAME_ACCESS);
- fh->close ();
- if (!norelease)
- cygheap->fdtab.release (i);
- }
-
- if (!hExeced && cygheap->ctty)
- cygheap->close_ctty ();
-
- if (h)
- SetStdHandle (STD_ERROR_HANDLE, h);
- cygheap->fdtab.unlock ();
-}
-
-int
-dup (int fd)
-{
- return cygheap->fdtab.dup2 (fd, cygheap_fdnew ());
-}
-
-int
-dup2 (int oldfd, int newfd)
-{
- return cygheap->fdtab.dup2 (oldfd, newfd);
-}
-
-static char desktop_ini[] =
- "[.ShellClassInfo]\r\nCLSID={645FF040-5081-101B-9F08-00AA002F954E}\r\n";
-static BYTE info2[] =
-{
- 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x20, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-};
-
-static void
-try_to_bin (path_conv &win32_path, HANDLE h)
-{
- NTSTATUS status;
- OBJECT_ATTRIBUTES attr;
- IO_STATUS_BLOCK io;
- HANDLE rootdir = NULL, recyclerdir = NULL;
- USHORT recycler_base_len = 0, recycler_user_len = 0;
- UNICODE_STRING root, recycler, fname;
- WCHAR recyclerbuf[NAME_MAX + 1]; /* Enough for recycler + SID + filename */
- PFILE_NAME_INFORMATION pfni;
- PFILE_INTERNAL_INFORMATION pfii;
- PFILE_RENAME_INFORMATION pfri;
- BYTE infobuf[sizeof (FILE_NAME_INFORMATION ) + 32767 * sizeof (WCHAR)];
-
- pfni = (PFILE_NAME_INFORMATION) infobuf;
- status = NtQueryInformationFile (h, &io, pfni, sizeof infobuf,
- FileNameInformation);
- if (!NT_SUCCESS (status))
- {
- debug_printf ("NtQueryInformationFile (FileNameInformation) failed, %08x",
- status);
- goto out;
- }
- /* The filename could change, the parent dir not. So we split both paths
- and take the prefix. However, there are two special cases:
- - The handle refers to the root dir of the volume.
- - The handle refers to the recycler or a subdir.
- Both cases are handled by just returning and not even trying to move
- them into the recycler. */
- if (pfni->FileNameLength == 2) /* root dir. */
- goto out;
- /* Initialize recycler path. */
- RtlInitEmptyUnicodeString (&recycler, recyclerbuf, sizeof recyclerbuf);
- if (wincap.has_recycle_dot_bin ()) /* NTFS and FAT since Vista */
- RtlAppendUnicodeToString (&recycler, L"\\$Recycle.Bin\\");
- else if (win32_path.fs_is_ntfs ()) /* NTFS up to 2K3 */
- RtlAppendUnicodeToString (&recycler, L"\\RECYCLER\\");
- else if (win32_path.fs_is_fat ()) /* FAT up to 2K3 */
- RtlAppendUnicodeToString (&recycler, L"\\Recycled\\");
- else
- goto out;
- /* Is the file a subdir of the recycler? */
- RtlInitCountedUnicodeString(&fname, pfni->FileName, pfni->FileNameLength);
- if (RtlEqualUnicodePathPrefix (&fname, recycler.Buffer, TRUE))
- goto out;
- /* Is fname the recycler? Temporarily hide trailing backslash. */
- recycler.Length -= sizeof (WCHAR);
- if (RtlEqualUnicodeString (&fname, &recycler, TRUE))
- goto out;
-
- /* Create root dir path from file name information. */
- RtlSplitUnicodePath (&fname, &fname, NULL);
- RtlSplitUnicodePath (win32_path.get_nt_native_path (), &root, NULL);
- root.Length -= fname.Length - sizeof (WCHAR);
-
- /* Open root directory. All recycler bin ops are caseinsensitive. */
- InitializeObjectAttributes (&attr, &root, OBJ_CASE_INSENSITIVE, NULL, NULL);
- status = NtOpenFile (&rootdir, FILE_TRAVERSE, &attr, &io,
- FILE_SHARE_VALID_FLAGS, FILE_OPEN_FOR_BACKUP_INTENT);
- if (!NT_SUCCESS (status))
- {
- debug_printf ("NtOpenFile (%S) failed, %08x", &root, status);
- goto out;
- }
-
- /* Strip leading backslash */
- ++recycler.Buffer;
- recycler.Length -= sizeof (WCHAR);
- /* Store length of recycler base dir, should it be necessary to create it. */
- recycler_base_len = recycler.Length;
- /* On NTFS the recycler dir contains user specific subdirs, which are the
- actual recycle bins per user. The name if this dir is the string
- representation of the user SID. */
- if (win32_path.fs_is_ntfs ())
- {
- UNICODE_STRING sid;
- WCHAR sidbuf[128];
- /* Unhide trailing backslash. */
- recycler.Length += sizeof (WCHAR);
- RtlInitEmptyUnicodeString (&sid, sidbuf, sizeof sidbuf);
- /* In contrast to what MSDN claims, this function is already available
- since NT4. */
- RtlConvertSidToUnicodeString (&sid, cygheap->user.sid (), FALSE);
- RtlAppendUnicodeStringToString (&recycler, &sid);
- recycler_user_len = recycler.Length;
- }
- /* Create hopefully unique filename. */
- RtlAppendUnicodeToString (&recycler, L"\\cyg");
- pfii = (PFILE_INTERNAL_INFORMATION) infobuf;
- status = NtQueryInformationFile (h, &io, pfii, sizeof infobuf,
- FileInternalInformation);
- if (!NT_SUCCESS (status))
- {
- debug_printf ("NtQueryInformationFile (FileInternalInformation) failed, "
- "%08x", status);
- goto out;
- }
- RtlInt64ToHexUnicodeString (pfii->FileId.QuadPart, &recycler, TRUE);
- /* Shoot. */
- pfri = (PFILE_RENAME_INFORMATION) infobuf;
- pfri->ReplaceIfExists = TRUE;
- pfri->RootDirectory = rootdir;
- pfri->FileNameLength = recycler.Length;
- memcpy (pfri->FileName, recycler.Buffer, recycler.Length);
- status = NtSetInformationFile (h, &io, pfri, sizeof infobuf,
- FileRenameInformation);
- if (status == STATUS_OBJECT_PATH_NOT_FOUND)
- {
- /* Ok, so the recycler and/or the recycler/SID directory don't exist.
- First reopen root dir with permission to create subdirs. */
- NtClose (rootdir);
- status = NtOpenFile (&rootdir, FILE_ADD_SUBDIRECTORY, &attr, &io,
- FILE_SHARE_VALID_FLAGS, FILE_OPEN_FOR_BACKUP_INTENT);
- if (!NT_SUCCESS (status))
- {
- debug_printf ("NtOpenFile (%S) failed, %08x", &recycler, status);
- goto out;
- }
- /* Then check if recycler exists by opening and potentially creating it.
- Yes, we can really do that. Typically the recycle bin is created
- by the first user actually using the bin. The permissions are the
- default permissions propagated from the root directory. */
- InitializeObjectAttributes (&attr, &recycler, OBJ_CASE_INSENSITIVE,
- rootdir, NULL);
- recycler.Length = recycler_base_len;
- status = NtCreateFile (&recyclerdir,
- READ_CONTROL
- | (win32_path.fs_is_ntfs () ? 0 : FILE_ADD_FILE),
- &attr, &io, NULL,
- FILE_ATTRIBUTE_DIRECTORY
- | FILE_ATTRIBUTE_SYSTEM
- | FILE_ATTRIBUTE_HIDDEN,
- FILE_SHARE_VALID_FLAGS, FILE_OPEN_IF,
- FILE_DIRECTORY_FILE, NULL, 0);
- if (!NT_SUCCESS (status))
- {
- debug_printf ("NtCreateFile (%S) failed, %08x", &recycler, status);
- goto out;
- }
- /* Next, if necessary, check if the recycler/SID dir exists and
- create it if not. */
- if (win32_path.fs_is_ntfs ())
- {
- NtClose (recyclerdir);
- recycler.Length = recycler_user_len;
- status = NtCreateFile (&recyclerdir, READ_CONTROL | FILE_ADD_FILE,
- &attr, &io, NULL, FILE_ATTRIBUTE_DIRECTORY
- | FILE_ATTRIBUTE_SYSTEM
- | FILE_ATTRIBUTE_HIDDEN,
- FILE_SHARE_VALID_FLAGS, FILE_OPEN_IF,
- FILE_DIRECTORY_FILE, NULL, 0);
- if (!NT_SUCCESS (status))
- {
- debug_printf ("NtCreateFile (%S) failed, %08x",
- &recycler, status);
- goto out;
- }
- }
- /* The desktop.ini and INFO2 (pre-Vista) files are expected by
- Windows Explorer. Otherwise, the created bin is treated as
- corrupted */
- if (io.Information == FILE_CREATED)
- {
- HANDLE fh;
- RtlInitUnicodeString (&fname, L"desktop.ini");
- InitializeObjectAttributes (&attr, &fname, OBJ_CASE_INSENSITIVE,
- recyclerdir, NULL);
- status = NtCreateFile (&fh, FILE_GENERIC_WRITE, &attr, &io, NULL,
- FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN,
- FILE_SHARE_VALID_FLAGS, FILE_CREATE,
- FILE_SYNCHRONOUS_IO_NONALERT
- | FILE_NON_DIRECTORY_FILE, NULL, 0);
- if (!NT_SUCCESS (status))
- debug_printf ("NtCreateFile (%S) failed, %08x", &recycler, status);
- else
- {
- status = NtWriteFile (fh, NULL, NULL, NULL, &io, desktop_ini,
- sizeof desktop_ini - 1, NULL, NULL);
- if (!NT_SUCCESS (status))
- debug_printf ("NtWriteFile (%S) failed, %08x", &fname, status);
- NtClose (fh);
- }
- if (!wincap.has_recycle_dot_bin ()) /* No INFO2 file since Vista */
- {
- RtlInitUnicodeString (&fname, L"INFO2");
- status = NtCreateFile (&fh, FILE_GENERIC_WRITE, &attr, &io, NULL,
- FILE_ATTRIBUTE_ARCHIVE
- | FILE_ATTRIBUTE_HIDDEN,
- FILE_SHARE_VALID_FLAGS, FILE_CREATE,
- FILE_SYNCHRONOUS_IO_NONALERT
- | FILE_NON_DIRECTORY_FILE, NULL, 0);
- if (!NT_SUCCESS (status))
- debug_printf ("NtCreateFile (%S) failed, %08x",
- &recycler, status);
- else
- {
- status = NtWriteFile (fh, NULL, NULL, NULL, &io, info2,
- sizeof info2, NULL, NULL);
- if (!NT_SUCCESS (status))
- debug_printf ("NtWriteFile (%S) failed, %08x",
- &fname, status);
- NtClose (fh);
- }
- }
- }
- NtClose (recyclerdir);
- /* Shoot again. */
- status = NtSetInformationFile (h, &io, pfri, sizeof infobuf,
- FileRenameInformation);
- }
- if (!NT_SUCCESS (status))
- debug_printf ("Move %S to %S failed, status = %p",
- win32_path.get_nt_native_path (), &recycler, status);
-out:
- if (rootdir)
- NtClose (rootdir);
-}
-
-static NTSTATUS
-check_dir_not_empty (HANDLE dir)
-{
- IO_STATUS_BLOCK io;
- const ULONG bufsiz = 3 * sizeof (FILE_NAMES_INFORMATION)
- + 3 * NAME_MAX * sizeof (WCHAR);
- PFILE_NAMES_INFORMATION pfni = (PFILE_NAMES_INFORMATION)
- alloca (bufsiz);
- NTSTATUS status = NtQueryDirectoryFile (dir, NULL, NULL, 0, &io, pfni,
- bufsiz, FileNamesInformation,
- FALSE, NULL, TRUE);
- if (!NT_SUCCESS (status))
- {
- syscall_printf ("Checking if directory is empty failed, "
- "status = %p", status);
- return status;
- }
- int cnt = 1;
- while (pfni->NextEntryOffset)
- {
- pfni = (PFILE_NAMES_INFORMATION)
- ((caddr_t) pfni + pfni->NextEntryOffset);
- ++cnt;
- }
- if (cnt > 2)
- {
- syscall_printf ("Directory not empty");
- return STATUS_DIRECTORY_NOT_EMPTY;
- }
- return STATUS_SUCCESS;
-}
-
-NTSTATUS
-unlink_nt (path_conv &pc)
-{
- NTSTATUS status;
- HANDLE fh;
- OBJECT_ATTRIBUTES attr;
- IO_STATUS_BLOCK io;
-
- ACCESS_MASK access = DELETE;
- /* If the R/O attribute is set, we have to open the file with
- FILE_WRITE_ATTRIBUTES to be able to remove this flags before trying
- to delete it. */
- if (pc.file_attributes () & FILE_ATTRIBUTE_READONLY)
- access |= FILE_WRITE_ATTRIBUTES;
-
- ULONG flags = FILE_OPEN_FOR_BACKUP_INTENT;
- /* Add the reparse point flag to native symlinks, otherwise we remove the
- target, not the symlink. */
- if (pc.is_rep_symlink ())
- flags |= FILE_OPEN_REPARSE_POINT;
-
- pc.get_object_attr (attr, sec_none_nih);
- /* First try to open the file with sharing not allowed. If the file
- has an open handle on it, this will fail. That indicates that the
- file has to be moved to the recycle bin so that it actually disappears
- from its directory even though its in use. Otherwise, if opening
- doesn't fail, the file is not in use and by simply closing the handle
- the file will disappear. */
- bool move_to_bin = false;
- status = NtOpenFile (&fh, access, &attr, &io, 0, flags);
- if (status == STATUS_SHARING_VIOLATION)
- {
- move_to_bin = true;
- if (!pc.isdir () || pc.isremote ())
- status = NtOpenFile (&fh, access, &attr, &io,
- FILE_SHARE_VALID_FLAGS, flags);
- else
- {
- /* It's getting tricky. The directory is opened in some process,
- so we're supposed to move it to the recycler and mark it for
- deletion. But what if the directory is not empty? The move
- will work, but the subsequent delete will fail. So we would
- have to move it back. That's bad, because the directory would
- be moved around which results in a temporary inconsistent state.
- So, what we do here is to test if the directory is empty. If
- not, we bail out with ERROR_DIR_NOT_EMTPY. The below code
- tests for at least three entries in the directory, ".", "..",
- and another one. Three entries means, not empty. This doesn't
- work for the root directory of a drive, but the root dir can
- neither be deleted, nor moved anyway. */
- status = NtOpenFile (&fh, access | FILE_LIST_DIRECTORY | SYNCHRONIZE,
- &attr, &io, FILE_SHARE_VALID_FLAGS,
- flags | FILE_SYNCHRONOUS_IO_NONALERT);
- if (NT_SUCCESS (status))
- {
- status = check_dir_not_empty (fh);
- if (!NT_SUCCESS (status))
- {
- NtClose (fh);
- return status;
- }
- }
- }
- }
- if (!NT_SUCCESS (status))
- {
- if (status == STATUS_DELETE_PENDING)
- {
- syscall_printf ("Delete already pending");
- return 0;
- }
- syscall_printf ("Opening file for delete failed, status = %p", status);
- return status;
- }
-
- if (move_to_bin && !pc.isremote ())
- try_to_bin (pc, fh);
-
- /* Get rid of read-only attribute. */
- if (access & FILE_WRITE_ATTRIBUTES)
- NtSetAttributesFile (fh, pc.file_attributes () & ~FILE_ATTRIBUTE_READONLY);
-
- FILE_DISPOSITION_INFORMATION disp = { TRUE };
- status = NtSetInformationFile (fh, &io, &disp, sizeof disp,
- FileDispositionInformation);
- if (!NT_SUCCESS (status))
- {
- syscall_printf ("Setting delete disposition failed, status = %p", status);
- /* Restore R/O attributes. */
- if (access & FILE_WRITE_ATTRIBUTES)
- NtSetAttributesFile (fh, pc.file_attributes ());
- }
- else if ((access & FILE_WRITE_ATTRIBUTES) && !pc.isdir ())
- {
- /* Restore R/O attribute to accommodate hardlinks. Don't try this
- with directories! For some reason the below NtSetInformationFile
- changes the disposition for delete back to FALSE, at least on XP. */
- NtSetAttributesFile (fh, pc.file_attributes ());
- }
-
- NtClose (fh);
- return status;
-}
-
-extern "C" int
-unlink (const char *ourname)
-{
- int res = -1;
- DWORD devn;
- NTSTATUS status;
-
- path_conv win32_name (ourname, PC_SYM_NOFOLLOW, stat_suffixes);
-
- if (win32_name.error)
- {
- set_errno (win32_name.error);
- goto done;
- }
-
- devn = win32_name.get_devn ();
- if (isproc_dev (devn))
- {
- set_errno (EROFS);
- goto done;
- }
-
- if (!win32_name.exists ())
- {
- syscall_printf ("unlinking a nonexistent file");
- set_errno (ENOENT);
- goto done;
- }
- else if (win32_name.isdir ())
- {
- syscall_printf ("unlinking a directory");
- set_errno (EPERM);
- goto done;
- }
-
- status = unlink_nt (win32_name);
- if (NT_SUCCESS (status))
- res = 0;
- else
- __seterrno_from_nt_status (status);
-
- done:
- syscall_printf ("%d = unlink (%s)", res, ourname);
- return res;
-}
-
-extern "C" int
-_remove_r (struct _reent *, const char *ourname)
-{
- path_conv win32_name (ourname, PC_SYM_NOFOLLOW);
-
- if (win32_name.error)
- {
- set_errno (win32_name.error);
- syscall_printf ("-1 = remove (%s)", ourname);
- return -1;
- }
-
- return win32_name.isdir () ? rmdir (ourname) : unlink (ourname);
-}
-
-extern "C" int
-remove (const char *ourname)
-{
- path_conv win32_name (ourname, PC_SYM_NOFOLLOW);
-
- if (win32_name.error)
- {
- set_errno (win32_name.error);
- syscall_printf ("-1 = remove (%s)", ourname);
- return -1;
- }
-
- return win32_name.isdir () ? rmdir (ourname) : unlink (ourname);
-}
-
-extern "C" pid_t
-getpid ()
-{
- return myself->pid;
-}
-
-extern "C" pid_t
-_getpid_r (struct _reent *)
-{
- return getpid ();
-}
-
-/* getppid: POSIX 4.1.1.1 */
-extern "C" pid_t
-getppid ()
-{
- return myself->ppid;
-}
-
-/* setsid: POSIX 4.3.2.1 */
-extern "C" pid_t
-setsid (void)
-{
-#ifdef NEWVFORK
- vfork_save *vf = vfork_storage.val ();
- /* This is a horrible, horrible kludge */
- if (vf && vf->pid < 0)
- {
- pid_t pid = fork ();
- if (pid > 0)
- {
- syscall_printf ("longjmping due to vfork");
- vf->restore_pid (pid);
- }
- /* assuming that fork was successful */
- }
-#endif
-
- if (myself->pgid == myself->pid)
- syscall_printf ("hmm. pgid %d pid %d", myself->pgid, myself->pid);
- else
- {
- myself->ctty = -1;
- cygheap->manage_console_count ("setsid", 0);
- myself->sid = getpid ();
- myself->pgid = getpid ();
- if (cygheap->ctty)
- cygheap->close_ctty ();
- syscall_printf ("sid %d, pgid %d, %s", myself->sid, myself->pgid, myctty ());
- return myself->sid;
- }
-
- set_errno (EPERM);
- return -1;
-}
-
-extern "C" pid_t
-getsid (pid_t pid)
-{
- pid_t res;
- if (!pid)
- res = myself->sid;
- else
- {
- pinfo p (pid);
- if (p)
- res = p->sid;
- else
- {
- set_errno (ESRCH);
- res = -1;
- }
- }
- return res;
-}
-
-extern "C" ssize_t
-read (int fd, void *ptr, size_t len)
-{
- const iovec iov =
- {
- iov_base: ptr,
- iov_len: len
- };
-
- return readv (fd, &iov, 1);
-}
-
-extern "C" ssize_t
-pread (int fd, void *ptr, size_t len, _off64_t off)
-{
- ssize_t res;
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- res = -1;
- else
- res = cfd->pread (ptr, len, off);
-
- syscall_printf ("%d = pread (%d, %p, %d, %d), errno %d",
- res, fd, ptr, len, off, get_errno ());
- return res;
-}
-
-extern "C" ssize_t
-pwrite (int fd, void *ptr, size_t len, _off64_t off)
-{
- ssize_t res;
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- res = -1;
- else
- res = cfd->pwrite (ptr, len, off);
-
- syscall_printf ("%d = pwrite (%d, %p, %d, %d), errno %d",
- res, fd, ptr, len, off, get_errno ());
- return res;
-}
-
-EXPORT_ALIAS (read, _read)
-
-extern "C" ssize_t
-write (int fd, const void *ptr, size_t len)
-{
- const struct iovec iov =
- {
- iov_base: (void *) ptr, // const_cast
- iov_len: len
- };
-
- return writev (fd, &iov, 1);
-}
-
-EXPORT_ALIAS (write, _write)
-
-extern "C" ssize_t
-readv (int fd, const struct iovec *const iov, const int iovcnt)
-{
- extern int sigcatchers;
- const int e = get_errno ();
-
- int res = -1;
-
- const ssize_t tot = check_iovec_for_read (iov, iovcnt);
-
- if (tot <= 0)
- {
- res = tot;
- goto done;
- }
-
- while (1)
- {
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- break;
-
- if ((cfd->get_flags () & O_ACCMODE) == O_WRONLY)
- {
- set_errno (EBADF);
- break;
- }
-
- DWORD wait = cfd->is_nonblocking () ? 0 : INFINITE;
-
- /* Could block, so let user know we at least got here. */
- syscall_printf ("readv (%d, %p, %d) %sblocking, sigcatchers %d",
- fd, iov, iovcnt, wait ? "" : "non", sigcatchers);
-
- if (wait && (!cfd->is_slow () || cfd->uninterruptible_io ()))
- debug_printf ("no need to call ready_for_read");
- else if (!cfd->ready_for_read (fd, wait))
- {
- res = -1;
- goto out;
- }
-
- /* FIXME: This is not thread safe. We need some method to
- ensure that an fd, closed in another thread, aborts I/O
- operations. */
- if (!cfd.isopen ())
- break;
-
- /* Check to see if this is a background read from a "tty",
- sending a SIGTTIN, if appropriate */
- res = cfd->bg_check (SIGTTIN);
-
- if (!cfd.isopen ())
- {
- res = -1;
- break;
- }
-
- if (res > bg_eof)
- {
- myself->process_state |= PID_TTYIN;
- if (!cfd.isopen ())
- {
- res = -1;
- break;
- }
- res = cfd->readv (iov, iovcnt, tot);
- myself->process_state &= ~PID_TTYIN;
- }
-
- out:
- if (res >= 0 || get_errno () != EINTR || !_my_tls.call_signal_handler ())
- break;
- set_errno (e);
- }
-
-done:
- syscall_printf ("%d = readv (%d, %p, %d), errno %d", res, fd, iov, iovcnt,
- get_errno ());
- MALLOC_CHECK;
- return res;
-}
-
-extern "C" ssize_t
-writev (const int fd, const struct iovec *const iov, const int iovcnt)
-{
- int res = -1;
- const ssize_t tot = check_iovec_for_write (iov, iovcnt);
-
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- goto done;
-
- if (tot <= 0)
- {
- res = tot;
- goto done;
- }
-
- if ((cfd->get_flags () & O_ACCMODE) == O_RDONLY)
- {
- set_errno (EBADF);
- goto done;
- }
-
- /* Could block, so let user know we at least got here. */
- if (fd == 1 || fd == 2)
- paranoid_printf ("writev (%d, %p, %d)", fd, iov, iovcnt);
- else
- syscall_printf ("writev (%d, %p, %d)", fd, iov, iovcnt);
-
- res = cfd->bg_check (SIGTTOU);
-
- if (res > (int) bg_eof)
- {
- myself->process_state |= PID_TTYOU;
- res = cfd->writev (iov, iovcnt, tot);
- myself->process_state &= ~PID_TTYOU;
- }
-
-done:
- if (fd == 1 || fd == 2)
- paranoid_printf ("%d = write (%d, %p, %d), errno %d",
- res, fd, iov, iovcnt, get_errno ());
- else
- syscall_printf ("%d = write (%d, %p, %d), errno %d",
- res, fd, iov, iovcnt, get_errno ());
-
- MALLOC_CHECK;
- return res;
-}
-
-/* _open */
-/* newlib's fcntl.h defines _open as taking variable args so we must
- correspond. The third arg if it exists is: mode_t mode. */
-extern "C" int
-open (const char *unix_path, int flags, ...)
-{
- int res = -1;
- va_list ap;
- mode_t mode = 0;
- sig_dispatch_pending ();
-
- syscall_printf ("open (%s, %p)", unix_path, flags);
- myfault efault;
- if (efault.faulted (EFAULT))
- /* errno already set */;
- else if (!*unix_path)
- set_errno (ENOENT);
- else
- {
- /* check for optional mode argument */
- va_start (ap, flags);
- mode = va_arg (ap, mode_t);
- va_end (ap);
-
- fhandler_base *fh;
- cygheap_fdnew fd;
-
- if (fd >= 0)
- {
- if (!(fh = build_fh_name (unix_path, NULL,
- (flags & (O_NOFOLLOW | O_EXCL))
- ? PC_SYM_NOFOLLOW : PC_SYM_FOLLOW,
- stat_suffixes)))
- res = -1; // errno already set
- else if ((flags & O_NOFOLLOW) && fh->issymlink ())
- {
- delete fh;
- res = -1;
- set_errno (ELOOP);
- }
- else if (((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)) && fh->exists ())
- {
- delete fh;
- res = -1;
- set_errno (EEXIST);
- }
- else if (fh->is_fs_special () && fh->device_access_denied (flags))
- {
- delete fh;
- res = -1;
- }
- else if (!fh->open (flags, (mode & 07777) & ~cygheap->umask))
- {
- delete fh;
- res = -1;
- }
- else
- {
- cygheap->fdtab[fd] = fh;
- if ((res = fd) <= 2)
- set_std_handle (res);
- }
- }
- }
-
- syscall_printf ("%d = open (%s, %p)", res, unix_path, flags);
- return res;
-}
-
-EXPORT_ALIAS (open, _open )
-EXPORT_ALIAS (open, _open64 )
-
-extern "C" _off64_t
-lseek64 (int fd, _off64_t pos, int dir)
-{
- _off64_t res;
-
- if (dir != SEEK_SET && dir != SEEK_CUR && dir != SEEK_END)
- {
- set_errno (EINVAL);
- res = -1;
- }
- else
- {
- cygheap_fdget cfd (fd);
- if (cfd >= 0)
- res = cfd->lseek (pos, dir);
- else
- res = -1;
- }
- syscall_printf ("%D = lseek (%d, %D, %d)", res, fd, pos, dir);
-
- return res;
-}
-
-EXPORT_ALIAS (lseek64, _lseek64)
-
-extern "C" _off_t
-lseek (int fd, _off_t pos, int dir)
-{
- return lseek64 (fd, (_off64_t) pos, dir);
-}
-
-EXPORT_ALIAS (lseek, _lseek)
-
-extern "C" int
-close (int fd)
-{
- int res;
-
- syscall_printf ("close (%d)", fd);
-
- MALLOC_CHECK;
- cygheap_fdget cfd (fd, true);
- if (cfd < 0)
- res = -1;
- else
- {
- res = cfd->close ();
- cfd.release ();
- }
-
- syscall_printf ("%d = close (%d)", res, fd);
- MALLOC_CHECK;
- return res;
-}
-
-EXPORT_ALIAS (close, _close)
-
-extern "C" int
-isatty (int fd)
-{
- int res;
-
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- res = 0;
- else
- res = cfd->is_tty ();
- syscall_printf ("%d = isatty (%d)", res, fd);
- return res;
-}
-EXPORT_ALIAS (isatty, _isatty)
-
-/* Under NT, try to make a hard link using backup API. If that
- fails or we are Win 95, just copy the file.
- FIXME: We should actually be checking partition type, not OS.
- Under NTFS, we should support hard links. On FAT partitions,
- we should just copy the file.
-*/
-
-extern "C" int
-link (const char *oldpath, const char *newpath)
-{
- int res = -1;
- fhandler_base *fh;
-
- if (!(fh = build_fh_name (oldpath, NULL, PC_SYM_NOFOLLOW, stat_suffixes)))
- goto error;
-
- if (fh->error ())
- {
- debug_printf ("got %d error from build_fh_name", fh->error ());
- set_errno (fh->error ());
- }
- else
- res = fh->link (newpath);
-
- delete fh;
- error:
- syscall_printf ("%d = link (%s, %s)", res, oldpath, newpath);
- return res;
-}
-
-/* chown: POSIX 5.6.5.1 */
-/*
- * chown () is only implemented for Windows NT. Under other operating
- * systems, it is only a stub that always returns zero.
- */
-static int
-chown_worker (const char *name, unsigned fmode, __uid32_t uid, __gid32_t gid)
-{
- int res = -1;
- fhandler_base *fh;
-
- if (!(fh = build_fh_name (name, NULL, fmode, stat_suffixes)))
- goto error;
-
- if (fh->error ())
- {
- debug_printf ("got %d error from build_fh_name", fh->error ());
- set_errno (fh->error ());
- }
- else
- res = fh->fchown (uid, gid);
-
- delete fh;
- error:
- syscall_printf ("%d = %schown (%s,...)",
- res, (fmode & PC_SYM_NOFOLLOW) ? "l" : "", name);
- return res;
-}
-
-extern "C" int
-chown32 (const char * name, __uid32_t uid, __gid32_t gid)
-{
- return chown_worker (name, PC_SYM_FOLLOW, uid, gid);
-}
-
-extern "C" int
-chown (const char * name, __uid16_t uid, __gid16_t gid)
-{
- return chown_worker (name, PC_SYM_FOLLOW,
- uid16touid32 (uid), gid16togid32 (gid));
-}
-
-extern "C" int
-lchown32 (const char * name, __uid32_t uid, __gid32_t gid)
-{
- return chown_worker (name, PC_SYM_NOFOLLOW, uid, gid);
-}
-
-extern "C" int
-lchown (const char * name, __uid16_t uid, __gid16_t gid)
-{
- return chown_worker (name, PC_SYM_NOFOLLOW,
- uid16touid32 (uid), gid16togid32 (gid));
-}
-
-extern "C" int
-fchown32 (int fd, __uid32_t uid, __gid32_t gid)
-{
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- {
- syscall_printf ("-1 = fchown (%d,...)", fd);
- return -1;
- }
-
- int res = cfd->fchown (uid, gid);
-
- syscall_printf ("%d = fchown (%s,...)", res, cfd->get_name ());
- return res;
-}
-
-extern "C" int
-fchown (int fd, __uid16_t uid, __gid16_t gid)
-{
- return fchown32 (fd, uid16touid32 (uid), gid16togid32 (gid));
-}
-
-/* umask: POSIX 5.3.3.1 */
-extern "C" mode_t
-umask (mode_t mask)
-{
- mode_t oldmask;
-
- oldmask = cygheap->umask;
- cygheap->umask = mask & 0777;
- return oldmask;
-}
-
-int
-chmod_device (path_conv& pc, mode_t mode)
-{
- return mknod_worker (pc.get_win32 (), pc.dev.mode & S_IFMT, mode, pc.dev.major, pc.dev.minor);
-}
-
-#define FILTERED_MODE(m) ((m) & (S_ISUID | S_ISGID | S_ISVTX \
- | S_IRWXU | S_IRWXG | S_IRWXO))
-
-/* chmod: POSIX 5.6.4.1 */
-extern "C" int
-chmod (const char *path, mode_t mode)
-{
- int res = -1;
- fhandler_base *fh;
- if (!(fh = build_fh_name (path, NULL, PC_SYM_FOLLOW, stat_suffixes)))
- goto error;
-
- if (fh->error ())
- {
- debug_printf ("got %d error from build_fh_name", fh->error ());
- set_errno (fh->error ());
- }
- else
- res = fh->fchmod (FILTERED_MODE (mode));
-
- delete fh;
- error:
- syscall_printf ("%d = chmod (%s, %p)", res, path, mode);
- return res;
-}
-
-/* fchmod: P96 5.6.4.1 */
-
-extern "C" int
-fchmod (int fd, mode_t mode)
-{
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- {
- syscall_printf ("-1 = fchmod (%d, 0%o)", fd, mode);
- return -1;
- }
-
- return cfd->fchmod (FILTERED_MODE (mode));
-}
-
-static void
-stat64_to_stat32 (struct __stat64 *src, struct __stat32 *dst)
-{
- dst->st_dev = ((src->st_dev >> 8) & 0xff00) | (src->st_dev & 0xff);
- dst->st_ino = ((unsigned) (src->st_ino >> 32)) | (unsigned) src->st_ino;
- dst->st_mode = src->st_mode;
- dst->st_nlink = src->st_nlink;
- dst->st_uid = src->st_uid;
- dst->st_gid = src->st_gid;
- dst->st_rdev = ((src->st_rdev >> 8) & 0xff00) | (src->st_rdev & 0xff);
- dst->st_size = src->st_size;
- dst->st_atim = src->st_atim;
- dst->st_mtim = src->st_mtim;
- dst->st_ctim = src->st_ctim;
- dst->st_blksize = src->st_blksize;
- dst->st_blocks = src->st_blocks;
-}
-
-extern "C" int
-fstat64 (int fd, struct __stat64 *buf)
-{
- int res;
-
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- res = -1;
- else
- {
- memset (buf, 0, sizeof (struct __stat64));
- res = cfd->fstat (buf);
- if (!res)
- {
- if (!buf->st_ino)
- buf->st_ino = cfd->get_ino ();
- if (!buf->st_dev)
- buf->st_dev = cfd->get_device ();
- if (!buf->st_rdev)
- buf->st_rdev = buf->st_dev;
- }
- }
-
- syscall_printf ("%d = fstat (%d, %p)", res, fd, buf);
- return res;
-}
-
-extern "C" int
-_fstat64_r (struct _reent *ptr, int fd, struct __stat64 *buf)
-{
- int ret;
-
- if ((ret = fstat64 (fd, buf)) == -1)
- ptr->_errno = get_errno ();
- return ret;
-}
-
-extern "C" int
-fstat (int fd, struct __stat32 *buf)
-{
- struct __stat64 buf64;
- int ret = fstat64 (fd, &buf64);
- if (!ret)
- stat64_to_stat32 (&buf64, buf);
- return ret;
-}
-
-extern "C" int
-_fstat_r (struct _reent *ptr, int fd, struct __stat32 *buf)
-{
- int ret;
-
- if ((ret = fstat (fd, buf)) == -1)
- ptr->_errno = get_errno ();
- return ret;
-}
-
-/* fsync: P96 6.6.1.1 */
-extern "C" int
-fsync (int fd)
-{
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- {
- syscall_printf ("-1 = fsync (%d)", fd);
- return -1;
- }
- return cfd->fsync ();
-}
-
-EXPORT_ALIAS (fsync, fdatasync)
-
-static void
-sync_worker (const char *vol)
-{
- HANDLE fh = CreateFileA (vol, GENERIC_WRITE, FILE_SHARE_VALID_FLAGS,
- &sec_none_nih, OPEN_EXISTING, 0, NULL);
- if (fh != INVALID_HANDLE_VALUE)
- {
- FlushFileBuffers (fh);
- CloseHandle (fh);
- }
- else
- debug_printf ("Open failed with %E");
-}
-
-/* sync: SUSv3 */
-extern "C" void
-sync ()
-{
- /* Per MSDN, 50 bytes should be enough here. */
- char vol[MAX_PATH];
-
- if (wincap.has_guid_volumes ()) /* Win2k and newer */
- {
- char a_drive[MAX_PATH] = {0};
- char b_drive[MAX_PATH] = {0};
-
- if (is_floppy ("A:"))
- GetVolumeNameForVolumeMountPointA ("A:\\", a_drive, MAX_PATH);
- if (is_floppy ("B:"))
- GetVolumeNameForVolumeMountPointA ("B:\\", b_drive, MAX_PATH);
-
- HANDLE sh = FindFirstVolumeA (vol, MAX_PATH);
- if (sh != INVALID_HANDLE_VALUE)
- {
- do
- {
- debug_printf ("Try volume %s", vol);
-
- /* Check vol for being a floppy on A: or B:. Skip them. */
- if (strcasematch (vol, a_drive) || strcasematch (vol, b_drive))
- {
- debug_printf ("Is floppy, don't sync");
- continue;
- }
-
- /* Eliminate trailing backslash. */
- vol[strlen (vol) - 1] = '\0';
- sync_worker (vol);
- }
- while (FindNextVolumeA (sh, vol, MAX_PATH));
- FindVolumeClose (sh);
- }
- }
- else
- {
- DWORD drives = GetLogicalDrives ();
- DWORD mask = 1;
- /* Skip floppies on A: and B: as in setmntent. */
- if ((drives & 1) && is_floppy ("A:"))
- drives &= ~1;
- if ((drives & 2) && is_floppy ("B:"))
- drives &= ~2;
- strcpy (vol, "\\\\.\\A:");
- do
- {
- /* Geeh. Try to sync only non-floppy drives. */
- if (drives & mask)
- {
- debug_printf ("Try volume %s", vol);
- sync_worker (vol);
- }
- vol[4]++;
- }
- while ((mask <<= 1) <= 1 << 25);
- }
-}
-
-/* Cygwin internal */
-int __stdcall
-stat_worker (path_conv &pc, struct __stat64 *buf)
-{
- int res = -1;
-
- myfault efault;
- if (efault.faulted (EFAULT))
- goto error;
-
- if (pc.error)
- {
- debug_printf ("got %d error from build_fh_name", pc.error);
- set_errno (pc.error);
- }
- else if (pc.exists ())
- {
- fhandler_base *fh;
-
- if (!(fh = build_fh_pc (pc)))
- goto error;
-
- debug_printf ("(%S, %p, %p), file_attributes %d",
- pc.get_nt_native_path (), buf, fh, (DWORD) *fh);
- memset (buf, 0, sizeof (*buf));
- res = fh->fstat (buf);
- if (!res)
- {
- if (!buf->st_ino)
- buf->st_ino = fh->get_ino ();
- if (!buf->st_dev)
- buf->st_dev = fh->get_device ();
- if (!buf->st_rdev)
- buf->st_rdev = buf->st_dev;
- }
- delete fh;
- }
- else
- set_errno (ENOENT);
-
- error:
- MALLOC_CHECK;
- syscall_printf ("%d = (%S, %p)", res, pc.get_nt_native_path (), buf);
- return res;
-}
-
-extern "C" int
-stat64 (const char *name, struct __stat64 *buf)
-{
- syscall_printf ("entering");
- path_conv pc (name, PC_SYM_FOLLOW | PC_POSIX, stat_suffixes);
- return stat_worker (pc, buf);
-}
-
-extern "C" int
-_stat64_r (struct _reent *ptr, const char *name, struct __stat64 *buf)
-{
- int ret;
-
- if ((ret = stat64 (name, buf)) == -1)
- ptr->_errno = get_errno ();
- return ret;
-}
-
-extern "C" int
-stat (const char *name, struct __stat32 *buf)
-{
- struct __stat64 buf64;
- int ret = stat64 (name, &buf64);
- if (!ret)
- stat64_to_stat32 (&buf64, buf);
- return ret;
-}
-
-extern "C" int
-_stat_r (struct _reent *ptr, const char *name, struct __stat32 *buf)
-{
- int ret;
-
- if ((ret = stat (name, buf)) == -1)
- ptr->_errno = get_errno ();
- return ret;
-}
-
-/* lstat: Provided by SVR4 and 4.3+BSD, POSIX? */
-extern "C" int
-lstat64 (const char *name, struct __stat64 *buf)
-{
- syscall_printf ("entering");
- path_conv pc (name, PC_SYM_NOFOLLOW | PC_POSIX, stat_suffixes);
- return stat_worker (pc, buf);
-}
-
-/* lstat: Provided by SVR4 and 4.3+BSD, POSIX? */
-extern "C" int
-lstat (const char *name, struct __stat32 *buf)
-{
- struct __stat64 buf64;
- int ret = lstat64 (name, &buf64);
- if (!ret)
- stat64_to_stat32 (&buf64, buf);
- return ret;
-}
-
-extern "C" int
-access (const char *fn, int flags)
-{
- // flags were incorrectly specified
- int res = -1;
- if (flags & ~(F_OK|R_OK|W_OK|X_OK))
- set_errno (EINVAL);
- else
- {
- fhandler_base *fh = build_fh_name (fn, NULL, PC_SYM_FOLLOW, stat_suffixes);
- if (fh)
- {
- res = fh->fhaccess (flags);
- delete fh;
- }
- }
- debug_printf ("returning %d", res);
- return res;
-}
-
-static void
-rename_append_suffix (path_conv &pc, const char *path, size_t len,
- const char *suffix)
-{
- char buf[len + 5];
-
- if (ascii_strcasematch (path + len - 4, ".lnk")
- || ascii_strcasematch (path + len - 4, ".exe"))
- len -= 4;
- stpcpy (stpncpy (buf, path, len), suffix);
- pc.check (buf, PC_SYM_NOFOLLOW);
-}
-
-static void
-start_transaction (HANDLE &old_trans, HANDLE &trans)
-{
- NTSTATUS status = NtCreateTransaction (&trans,
- SYNCHRONIZE | TRANSACTION_ALL_ACCESS,
- NULL, NULL, NULL, 0, 0, 0, NULL, NULL);
- if (NT_SUCCESS (status))
- {
- old_trans = RtlGetCurrentTransaction ();
- RtlSetCurrentTransaction (trans);
- }
- else
- {
- debug_printf ("NtCreateTransaction failed, %p", status);
- old_trans = trans = NULL;
- }
-}
-
-static NTSTATUS
-stop_transaction (NTSTATUS status, HANDLE old_trans, HANDLE trans)
-{
- RtlSetCurrentTransaction (old_trans);
- if (NT_SUCCESS (status))
- status = NtCommitTransaction (trans, TRUE);
- else
- status = NtRollbackTransaction (trans, TRUE);
- NtClose (trans);
- return status;
-}
-
-extern "C" int
-rename (const char *oldpath, const char *newpath)
-{
- tmp_pathbuf tp;
- int res = -1;
- char *oldbuf, *newbuf;
- path_conv oldpc, newpc, new2pc, *dstpc, *removepc = NULL;
- bool old_dir_requested = false, new_dir_requested = false;
- bool old_explicit_suffix = false, new_explicit_suffix = false;
- size_t olen, nlen;
- bool equal_path;
- NTSTATUS status = 0;
- HANDLE fh = NULL, nfh;
- HANDLE old_trans = NULL, trans = NULL;
- OBJECT_ATTRIBUTES attr;
- IO_STATUS_BLOCK io;
- ULONG size;
- FILE_STANDARD_INFORMATION ofsi;
- PFILE_RENAME_INFORMATION pfri;
-
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
-
- if (has_dot_last_component (oldpath, true))
- {
- oldpc.check (oldpath, PC_SYM_NOFOLLOW, stat_suffixes);
- set_errno (oldpc.isdir () ? EBUSY : ENOTDIR);
- goto out;
- }
- if (has_dot_last_component (newpath, true))
- {
- newpc.check (newpath, PC_SYM_NOFOLLOW, stat_suffixes);
- set_errno (!newpc.exists () ? ENOENT : newpc.isdir () ? EBUSY : ENOTDIR);
- goto out;
- }
-
- /* A trailing slash requires that the pathname points to an existing
- directory. If it's not, it's a ENOTDIR condition. The same goes
- for newpath a bit further down this function. */
- olen = strlen (oldpath);
- if (isdirsep (oldpath[olen - 1]))
- {
- stpcpy (oldbuf = tp.c_get (), oldpath);
- while (olen > 0 && isdirsep (oldbuf[olen - 1]))
- oldbuf[--olen] = '\0';
- oldpath = oldbuf;
- old_dir_requested = true;
- }
- oldpc.check (oldpath, PC_SYM_NOFOLLOW, stat_suffixes);
- if (oldpc.error)
- {
- set_errno (oldpc.error);
- goto out;
- }
- if (!oldpc.exists ())
- {
- set_errno (ENOENT);
- goto out;
- }
- if (oldpc.isspecial ()) /* No renames from virtual FS */
- {
- set_errno (EROFS);
- goto out;
- }
- if (old_dir_requested && !oldpc.isdir ())
- {
- set_errno (ENOTDIR);
- goto out;
- }
- if (oldpc.known_suffix
- && (ascii_strcasematch (oldpath + olen - 4, ".lnk")
- || ascii_strcasematch (oldpath + olen - 4, ".exe")))
- old_explicit_suffix = true;
-
- nlen = strlen (newpath);
- if (isdirsep (newpath[nlen - 1]))
- {
- stpcpy (newbuf = tp.c_get (), newpath);
- while (nlen > 0 && isdirsep (newbuf[nlen - 1]))
- newbuf[--nlen] = '\0';
- newpath = newbuf;
- new_dir_requested = true;
- }
- newpc.check (newpath, PC_SYM_NOFOLLOW, stat_suffixes);
- if (newpc.error)
- {
- set_errno (newpc.error);
- goto out;
- }
- if (newpc.isspecial ()) /* No renames to virtual FSes */
- {
- set_errno (EROFS);
- goto out;
- }
- if (new_dir_requested && !newpc.isdir ())
- {
- set_errno (ENOTDIR);
- goto out;
- }
- if (newpc.known_suffix
- && (ascii_strcasematch (newpath + nlen - 4, ".lnk")
- || ascii_strcasematch (newpath + nlen - 4, ".exe")))
- new_explicit_suffix = true;
-
- /* This test is necessary in almost every case, so just do it once here. */
- equal_path = RtlEqualUnicodeString (oldpc.get_nt_native_path (),
- newpc.get_nt_native_path (),
- oldpc.objcaseinsensitive ());
-
- /* First check if oldpath and newpath only differ by case. If so, it's
- just a request to change the case of the filename. By simply setting
- the file attributes to INVALID_FILE_ATTRIBUTES (which translates to
- "file doesn't exist"), all later tests are skipped. */
- if (oldpc.objcaseinsensitive () && newpc.exists () && equal_path
- && old_explicit_suffix == new_explicit_suffix)
- {
- if (RtlEqualUnicodeString (oldpc.get_nt_native_path (),
- newpc.get_nt_native_path (),
- FALSE))
- {
- res = 0;
- goto out;
- }
- newpc.file_attributes (INVALID_FILE_ATTRIBUTES);
- }
- else if (oldpc.isdir ())
- {
- if (newpc.exists () && !newpc.isdir ())
- {
- set_errno (ENOTDIR);
- goto out;
- }
- /* Check for newpath being a subdir of oldpath. */
- if (RtlPrefixUnicodeString (oldpc.get_nt_native_path (),
- newpc.get_nt_native_path (),
- TRUE)
- && newpc.get_nt_native_path ()->Length >
- oldpc.get_nt_native_path ()->Length
- && *(PWCHAR) ((PBYTE) newpc.get_nt_native_path ()->Buffer
- + oldpc.get_nt_native_path ()->Length) == L'\\')
- {
- set_errno (EINVAL);
- goto out;
- }
- }
- else if (!newpc.exists ())
- {
- if (equal_path && old_explicit_suffix != new_explicit_suffix)
- {
- newpc.check (newpath, PC_SYM_NOFOLLOW);
- if (RtlEqualUnicodeString (oldpc.get_nt_native_path (),
- newpc.get_nt_native_path (),
- oldpc.objcaseinsensitive ()))
- {
- res = 0;
- goto out;
- }
- }
- else if (oldpc.is_lnk_symlink ()
- && !RtlEqualUnicodePathSuffix (newpc.get_nt_native_path (),
- L".lnk", TRUE))
- rename_append_suffix (newpc, newpath, nlen, ".lnk");
- else if (oldpc.is_binary () && !old_explicit_suffix
- && !RtlEqualUnicodePathSuffix (newpc.get_nt_native_path (),
- L".exe", TRUE))
- /* To rename an executable foo.exe to bar-without-exe-suffix, the
- .exe suffix must be given explicitly in oldpath. */
- rename_append_suffix (newpc, newpath, nlen, ".exe");
- }
- else if (newpc.isdir ())
- {
- set_errno (EISDIR);
- goto out;
- }
- else
- {
- if (equal_path && old_explicit_suffix != new_explicit_suffix)
- {
- newpc.check (newpath, PC_SYM_NOFOLLOW);
- if (RtlEqualUnicodeString (oldpc.get_nt_native_path (),
- newpc.get_nt_native_path (),
- oldpc.objcaseinsensitive ()))
- {
- res = 0;
- goto out;
- }
- }
- else if (oldpc.is_lnk_symlink ())
- {
- if (!newpc.is_lnk_symlink ()
- && !RtlEqualUnicodePathSuffix (newpc.get_nt_native_path (),
- L".lnk", TRUE))
- {
- rename_append_suffix (new2pc, newpath, nlen, ".lnk");
- removepc = &newpc;
- }
- }
- else if (oldpc.is_binary ())
- {
- if (!RtlEqualUnicodePathSuffix (newpc.get_nt_native_path (),
- L".exe", TRUE))
- {
- rename_append_suffix (new2pc, newpath, nlen, ".exe");
- removepc = &newpc;
- }
- }
- else
- {
- if ((RtlEqualUnicodePathSuffix (newpc.get_nt_native_path (),
- L".lnk", TRUE)
- || RtlEqualUnicodePathSuffix (newpc.get_nt_native_path (),
- L".exe", TRUE))
- && !new_explicit_suffix)
- {
- new2pc.check (newpath, PC_SYM_NOFOLLOW, stat_suffixes);
- newpc.get_nt_native_path ()->Length -= 4 * sizeof (WCHAR);
- if (new2pc.is_binary () || new2pc.is_lnk_symlink ())
- removepc = &new2pc;
- }
- }
- }
- dstpc = (removepc == &newpc) ? &new2pc : &newpc;
-
- /* Opening the file must be part of the transaction. It's not sufficient
- to call only NtSetInformationFile under the transaction. Therefore we
- have to start the transaction here, if necessary. */
- if (wincap.has_transactions ()
- && (dstpc->fs_flags () & FILE_SUPPORTS_TRANSACTIONS)
- && (dstpc->isdir ()
- || (!removepc && dstpc->has_attribute (FILE_ATTRIBUTE_READONLY))))
- start_transaction (old_trans, trans);
-
- /* DELETE is required to rename a file. Samba (only some versions?) doesn't
- like the FILE_SHARE_DELETE mode if the file has the R/O attribute set
- and returns STATUS_ACCESS_DENIED in that case. */
- status = NtOpenFile (&fh, DELETE, oldpc.get_object_attr (attr, sec_none_nih),
- &io,
- oldpc.fs_is_samba () ? FILE_SHARE_READ | FILE_SHARE_WRITE
- : FILE_SHARE_VALID_FLAGS,
- FILE_OPEN_FOR_BACKUP_INTENT
- | (oldpc.is_rep_symlink () ? FILE_OPEN_REPARSE_POINT : 0));
- if (!NT_SUCCESS (status))
- {
- __seterrno_from_nt_status (status);
- goto out;
- }
-
- /* Renaming a dir to another, existing dir fails always, even if
- ReplaceIfExists is set to TRUE and the existing dir is empty. So
- we have to remove the destination dir first. This also covers the
- case that the destination directory is not empty. In that case,
- unlink_nt returns with STATUS_DIRECTORY_NOT_EMPTY. */
- if (dstpc->isdir ())
- {
- status = unlink_nt (*dstpc);
- if (!NT_SUCCESS (status))
- {
- __seterrno_from_nt_status (status);
- goto out;
- }
- }
- /* You can't copy a file if the destination exists and has the R/O
- attribute set. Remove the R/O attribute first. But first check
- if a removepc exists. If so, dstpc points to a non-existing file
- due to a mangled suffix. */
- else if (!removepc && dstpc->has_attribute (FILE_ATTRIBUTE_READONLY))
- {
- status = NtOpenFile (&nfh, FILE_WRITE_ATTRIBUTES,
- dstpc->get_object_attr (attr, sec_none_nih),
- &io, FILE_SHARE_VALID_FLAGS,
- FILE_OPEN_FOR_BACKUP_INTENT
- | (dstpc->is_rep_symlink ()
- ? FILE_OPEN_REPARSE_POINT : 0));
- if (!NT_SUCCESS (status))
- {
- __seterrno_from_nt_status (status);
- goto out;
- }
- status = NtSetAttributesFile (nfh, dstpc->file_attributes ()
- & ~FILE_ATTRIBUTE_READONLY);
- NtClose (nfh);
- if (!NT_SUCCESS (status))
- {
- __seterrno_from_nt_status (status);
- goto out;
- }
- }
-
- /* SUSv3: If the old argument and the new argument resolve to the same
- existing file, rename() shall return successfully and perform no
- other action.
- The test tries to be as quick as possible. First it tests for identical
- volume serial numbers because that information is available anyway.
- Then it tests if oldpath has more than 1 hardlink, then it opens newpath
- and tests for identical file ids. If so, oldpath and newpath refer to
- the same file. */
- if ((removepc || dstpc->exists ())
- && !oldpc.isdir ()
- && dstpc->fs_serial_number () == oldpc.fs_serial_number ()
- && NT_SUCCESS (NtQueryInformationFile (fh, &io, &ofsi, sizeof ofsi,
- FileStandardInformation))
- && ofsi.NumberOfLinks > 1
- && NT_SUCCESS (NtOpenFile (&nfh, READ_CONTROL,
- (removepc ?: dstpc)->get_object_attr (attr, sec_none_nih),
- &io, FILE_SHARE_VALID_FLAGS,
- FILE_OPEN_FOR_BACKUP_INTENT
- | ((removepc ?: dstpc)->is_rep_symlink ()
- ? FILE_OPEN_REPARSE_POINT : 0))))
- {
- FILE_INTERNAL_INFORMATION ofii, nfii;
-
- if (NT_SUCCESS (NtQueryInformationFile (fh, &io, &ofii, sizeof ofii,
- FileInternalInformation))
- && NT_SUCCESS (NtQueryInformationFile (nfh, &io, &nfii, sizeof nfii,
- FileInternalInformation))
- && ofii.FileId.QuadPart == nfii.FileId.QuadPart)
- {
- debug_printf ("%s and %s are the same file", oldpath, newpath);
- NtClose (nfh);
- res = 0;
- goto out;
- }
- NtClose (nfh);
- }
- size = sizeof (FILE_RENAME_INFORMATION)
- + dstpc->get_nt_native_path ()->Length;
- if (size > NT_MAX_PATH * sizeof (WCHAR)) /* Hopefully very seldom. */
- pfri = (PFILE_RENAME_INFORMATION) alloca (size);
- else
- pfri = (PFILE_RENAME_INFORMATION) tp.w_get ();
- pfri->ReplaceIfExists = TRUE;
- pfri->RootDirectory = NULL;
- pfri->FileNameLength = dstpc->get_nt_native_path ()->Length;
- memcpy (&pfri->FileName, dstpc->get_nt_native_path ()->Buffer,
- pfri->FileNameLength);
- status = NtSetInformationFile (fh, &io, pfri, size, FileRenameInformation);
- /* This happens if the access rights don't allow deleting the destination.
- Even if the handle to the original file is opened with BACKUP
- and/or RECOVERY, these flags don't apply to the destination of the
- rename operation. So, a privileged user can't rename a file to an
- existing file, if the permissions of the existing file aren't right.
- Like directories, we have to handle this separately by removing the
- destination before renaming. */
- if (status == STATUS_ACCESS_DENIED && dstpc->exists () && !dstpc->isdir ())
- {
- if (wincap.has_transactions ()
- && (dstpc->fs_flags () & FILE_SUPPORTS_TRANSACTIONS)
- && !trans)
- {
- start_transaction (old_trans, trans);
- /* As mentioned earlier, opening the file must be part of the
- transaction. Therefore we have to reopen the file here if the
- transaction hasn't been started already. Unfortunately we can't
- use the NT "reopen file from existing handle" feature. In that
- case NtOpenFile returns STATUS_TRANSACTIONAL_CONFLICT. We *have*
- to close the handle to the file first, *then* we can re-open it.
- Fortunately nothing has happened yet, so the atomicity of the
- rename functionality is not spoiled. */
- NtClose (fh);
- status = NtOpenFile (&fh, DELETE,
- oldpc.get_object_attr (attr, sec_none_nih),
- &io, FILE_SHARE_VALID_FLAGS,
- FILE_OPEN_FOR_BACKUP_INTENT
- | (oldpc.is_rep_symlink ()
- ? FILE_OPEN_REPARSE_POINT : 0));
- if (!NT_SUCCESS (status))
- {
- __seterrno_from_nt_status (status);
- goto out;
- }
- }
- if (NT_SUCCESS (status = unlink_nt (*dstpc)))
- status = NtSetInformationFile (fh, &io, pfri, size,
- FileRenameInformation);
- }
- if (NT_SUCCESS (status))
- {
- if (removepc)
- unlink_nt (*removepc);
- res = 0;
- }
- else
- __seterrno_from_nt_status (status);
-
-out:
- if (fh)
- NtClose (fh);
- if (wincap.has_transactions () && trans)
- stop_transaction (status, old_trans, trans);
- syscall_printf ("%d = rename (%s, %s)", res, oldpath, newpath);
- return res;
-}
-
-extern "C" int
-system (const char *cmdstring)
-{
- pthread_testcancel ();
-
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
-
- int res;
- const char* command[4];
-
- if (cmdstring == NULL)
- return 1;
-
- command[0] = "sh";
- command[1] = "-c";
- command[2] = cmdstring;
- command[3] = (const char *) NULL;
-
- if ((res = spawnvp (_P_SYSTEM, "/bin/sh", command)) == -1)
- {
- // when exec fails, return value should be as if shell
- // executed exit (127)
- res = 127;
- }
-
- return res;
-}
-
-extern "C" int
-setdtablesize (int size)
-{
- if (size <= (int)cygheap->fdtab.size || cygheap->fdtab.extend (size - cygheap->fdtab.size))
- return 0;
-
- return -1;
-}
-
-extern "C" int
-getdtablesize ()
-{
- return cygheap->fdtab.size > OPEN_MAX ? cygheap->fdtab.size : OPEN_MAX;
-}
-
-extern "C" size_t
-getpagesize ()
-{
- if (!system_info.dwAllocationGranularity)
- GetSystemInfo (&system_info);
- return (size_t) system_info.dwAllocationGranularity;
-}
-
-size_t
-getsystempagesize ()
-{
- if (!system_info.dwPageSize)
- GetSystemInfo (&system_info);
- return (size_t) system_info.dwPageSize;
-}
-
-/* FIXME: not all values are correct... */
-extern "C" long int
-fpathconf (int fd, int v)
-{
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- return -1;
- return cfd->fpathconf (v);
-}
-
-extern "C" long int
-pathconf (const char *file, int v)
-{
- fhandler_base *fh;
-
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- if (!*file)
- {
- set_errno (ENOENT);
- return -1;
- }
- if (!(fh = build_fh_name (file, NULL, PC_SYM_FOLLOW, stat_suffixes)))
- return -1;
- if (!fh->exists ())
- {
- set_errno (ENOENT);
- return -1;
- }
- return fh->fpathconf (v);
-}
-
-extern "C" int
-ttyname_r (int fd, char *buf, size_t buflen)
-{
- int ret = 0;
- myfault efault;
- if (efault.faulted ())
- ret = EFAULT;
- else
- {
- cygheap_fdget cfd (fd, true);
- if (cfd < 0)
- ret = EBADF;
- else if (!cfd->is_tty ())
- ret = ENOTTY;
- else if (buflen < strlen (cfd->ttyname ()) + 1)
- ret = ERANGE;
- else
- strcpy (buf, cfd->ttyname ());
- }
- debug_printf ("returning %d tty: %s", ret, ret ? "NULL" : buf);
- return ret;
-}
-
-extern "C" char *
-ttyname (int fd)
-{
- static char name[TTY_NAME_MAX];
- int ret = ttyname_r (fd, name, TTY_NAME_MAX);
- if (ret)
- {
- set_errno (ret);
- return NULL;
- }
- return name;
-}
-
-extern "C" char *
-ctermid (char *str)
-{
- static NO_COPY char buf[16];
- if (str == NULL)
- str = buf;
- if (!real_tty_attached (myself))
- strcpy (str, "/dev/conin");
- else
- __small_sprintf (str, "/dev/tty%d", myself->ctty);
- return str;
-}
-
-/* Tells stdio if it should do the cr/lf conversion for this file */
-extern "C" int
-_cygwin_istext_for_stdio (int fd)
-{
- if (CYGWIN_VERSION_OLD_STDIO_CRLF_HANDLING)
- {
- syscall_printf ("fd %d: old API", fd);
- return 0; /* we do it for old apps, due to getc/putc macros */
- }
-
- cygheap_fdget cfd (fd, false, false);
- if (cfd < 0)
- {
- syscall_printf ("fd %d: not open", fd);
- return 0;
- }
-
-#if 0
- if (cfd->get_device () != FH_FS)
- {
- syscall_printf ("fd not disk file. Defaulting to binary.");
- return 0;
- }
-#endif
-
- if (cfd->wbinary () || cfd->rbinary ())
- {
- syscall_printf ("fd %d: opened as binary", fd);
- return 0;
- }
-
- syscall_printf ("fd %d: defaulting to text", fd);
- return 1;
-}
-
-/* internal newlib function */
-extern "C" int _fwalk (struct _reent *ptr, int (*function) (FILE *));
-
-static int
-setmode_helper (FILE *f)
-{
- if (fileno (f) != _my_tls.locals.setmode_file)
- {
- syscall_printf ("improbable, but %d != %d", fileno (f), _my_tls.locals.setmode_file);
- return 0;
- }
- syscall_printf ("file was %s now %s", f->_flags & __SCLE ? "text" : "binary",
- _my_tls.locals.setmode_mode & O_TEXT ? "text" : "binary");
- if (_my_tls.locals.setmode_mode & O_TEXT)
- f->_flags |= __SCLE;
- else
- f->_flags &= ~__SCLE;
- return 0;
-}
-
-extern "C" int
-getmode (int fd)
-{
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- return -1;
-
- return cfd->get_flags () & (O_BINARY | O_TEXT);
-}
-
-/* Set a file descriptor into text or binary mode, returning the
- previous mode. */
-
-extern "C" int
-setmode (int fd, int mode)
-{
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- return -1;
- if (mode != O_BINARY && mode != O_TEXT && mode != 0)
- {
- set_errno (EINVAL);
- return -1;
- }
-
- /* Note that we have no way to indicate the case that writes are
- binary but not reads, or vice-versa. These cases can arise when
- using the tty or console interface. People using those
- interfaces should not use setmode. */
-
- int res;
- if (cfd->wbinary () && cfd->rbinary ())
- res = O_BINARY;
- else if (cfd->wbinset () && cfd->rbinset ())
- res = O_TEXT; /* Specifically set O_TEXT */
- else
- res = 0;
-
- if (!mode)
- cfd->reset_to_open_binmode ();
- else
- cfd->set_flags ((cfd->get_flags () & ~(O_TEXT | O_BINARY)) | mode);
-
- syscall_printf ("(%d<%S>, %p) returning %s", fd,
- cfd->pc.get_nt_native_path (), mode,
- res & O_TEXT ? "text" : "binary");
- return res;
-}
-
-extern "C" int
-cygwin_setmode (int fd, int mode)
-{
- int res = setmode (fd, mode);
- if (res != -1)
- {
- _my_tls.locals.setmode_file = fd;
- if (_cygwin_istext_for_stdio (fd))
- _my_tls.locals.setmode_mode = O_TEXT;
- else
- _my_tls.locals.setmode_mode = O_BINARY;
- _fwalk (_GLOBAL_REENT, setmode_helper);
- }
- return res;
-}
-
-extern "C" int
-posix_fadvise (int fd, _off64_t offset, _off64_t len, int advice)
-{
- int res = -1;
- cygheap_fdget cfd (fd);
- if (cfd >= 0)
- res = cfd->fadvise (offset, len, advice);
- else
- set_errno (EBADF);
- syscall_printf ("%d = posix_fadvice (%d, %D, %D, %d)",
- res, fd, offset, len, advice);
- return res;
-}
-
-extern "C" int
-posix_fallocate (int fd, _off64_t offset, _off64_t len)
-{
- int res = -1;
- if (offset < 0 || len == 0)
- set_errno (EINVAL);
- else
- {
- cygheap_fdget cfd (fd);
- if (cfd >= 0)
- res = cfd->ftruncate (offset + len, false);
- else
- set_errno (EBADF);
- }
- syscall_printf ("%d = posix_fallocate (%d, %D, %D)", res, fd, offset, len);
- return res;
-}
-
-extern "C" int
-ftruncate64 (int fd, _off64_t length)
-{
- int res = -1;
- cygheap_fdget cfd (fd);
- if (cfd >= 0)
- res = cfd->ftruncate (length, true);
- else
- set_errno (EBADF);
- syscall_printf ("%d = ftruncate (%d, %D)", res, fd, length);
- return res;
-}
-
-/* ftruncate: P96 5.6.7.1 */
-extern "C" int
-ftruncate (int fd, _off_t length)
-{
- return ftruncate64 (fd, (_off64_t)length);
-}
-
-/* truncate: Provided by SVR4 and 4.3+BSD. Not part of POSIX.1 or XPG3 */
-extern "C" int
-truncate64 (const char *pathname, _off64_t length)
-{
- int fd;
- int res = -1;
-
- fd = open (pathname, O_RDWR);
-
- if (fd != -1)
- {
- res = ftruncate64 (fd, length);
- close (fd);
- }
- syscall_printf ("%d = truncate (%s, %D)", res, pathname, length);
-
- return res;
-}
-
-/* truncate: Provided by SVR4 and 4.3+BSD. Not part of POSIX.1 or XPG3 */
-extern "C" int
-truncate (const char *pathname, _off_t length)
-{
- return truncate64 (pathname, (_off64_t)length);
-}
-
-extern "C" long
-get_osfhandle (int fd)
-{
- long res;
-
- cygheap_fdget cfd (fd);
- if (cfd >= 0)
- res = (long) cfd->get_handle ();
- else
- res = -1;
-
- syscall_printf ("%d = get_osfhandle (%d)", res, fd);
- return res;
-}
-
-extern "C" int
-fstatvfs (int fd, struct statvfs *sfs)
-{
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
-
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- return -1;
- return cfd->fstatvfs (sfs);
-}
-
-extern "C" int
-statvfs (const char *name, struct statvfs *sfs)
-{
- int res = -1;
- fhandler_base *fh = NULL;
-
- myfault efault;
- if (efault.faulted (EFAULT))
- goto error;
-
- if (!(fh = build_fh_name (name, NULL, PC_SYM_FOLLOW, stat_suffixes)))
- goto error;
-
- if (fh->error ())
- {
- debug_printf ("got %d error from build_fh_name", fh->error ());
- set_errno (fh->error ());
- }
- else if (fh->exists ())
- {
- debug_printf ("(%s, %p), file_attributes %d", name, sfs, (DWORD) *fh);
- res = fh->fstatvfs (sfs);
- }
- else
- set_errno (ENOENT);
-
- delete fh;
- error:
- MALLOC_CHECK;
- syscall_printf ("%d = (%s, %p)", res, name, sfs);
- return res;
-}
-
-extern "C" int
-fstatfs (int fd, struct statfs *sfs)
-{
- struct statvfs vfs;
- int ret = fstatvfs (fd, &vfs);
- if (!ret)
- {
- sfs->f_type = vfs.f_flag;
- sfs->f_bsize = vfs.f_bsize;
- sfs->f_blocks = vfs.f_blocks;
- sfs->f_bavail = vfs.f_bavail;
- sfs->f_bfree = vfs.f_bfree;
- sfs->f_files = -1;
- sfs->f_ffree = -1;
- sfs->f_fsid = vfs.f_fsid;
- sfs->f_namelen = vfs.f_namemax;
- }
- return ret;
-}
-
-extern "C" int
-statfs (const char *fname, struct statfs *sfs)
-{
- struct statvfs vfs;
- int ret = statvfs (fname, &vfs);
- if (!ret)
- {
- sfs->f_type = vfs.f_flag;
- sfs->f_bsize = vfs.f_bsize;
- sfs->f_blocks = vfs.f_blocks;
- sfs->f_bavail = vfs.f_bavail;
- sfs->f_bfree = vfs.f_bfree;
- sfs->f_files = -1;
- sfs->f_ffree = -1;
- sfs->f_fsid = vfs.f_fsid;
- sfs->f_namelen = vfs.f_namemax;
- }
- return ret;
-}
-
-/* setpgid: POSIX 4.3.3.1 */
-extern "C" int
-setpgid (pid_t pid, pid_t pgid)
-{
- int res = -1;
- if (pid == 0)
- pid = getpid ();
- if (pgid == 0)
- pgid = pid;
-
- if (pgid < 0)
- set_errno (EINVAL);
- else
- {
- pinfo p (pid, PID_MAP_RW);
- if (!p)
- set_errno (ESRCH);
- else if (p->pgid == pgid)
- res = 0;
- /* A process may only change the process group of itself and its children */
- else if (p != myself && p->ppid != myself->pid)
- set_errno (EPERM);
- else
- {
- p->pgid = pgid;
- if (p->pid != p->pgid)
- p->set_has_pgid_children (0);
- res = 0;
- }
- }
-
- syscall_printf ("pid %d, pgid %d, res %d", pid, pgid, res);
- return res;
-}
-
-extern "C" pid_t
-getpgid (pid_t pid)
-{
- if (pid == 0)
- pid = getpid ();
-
- pinfo p (pid);
- if (p == 0)
- {
- set_errno (ESRCH);
- return -1;
- }
- return p->pgid;
-}
-
-extern "C" int
-setpgrp (void)
-{
- return setpgid (0, 0);
-}
-
-extern "C" pid_t
-getpgrp (void)
-{
- return getpgid (0);
-}
-
-extern "C" char *
-ptsname (int fd)
-{
- cygheap_fdget cfd (fd);
- if (cfd < 0)
- return 0;
- return (char *) (cfd->ptsname ());
-}
-
-static int __stdcall
-mknod_worker (const char *path, mode_t type, mode_t mode, _major_t major,
- _minor_t minor)
-{
- char buf[sizeof (":\\00000000:00000000:00000000") + PATH_MAX];
- sprintf (buf, ":\\%x:%x:%x", major, minor,
- type | (mode & (S_IRWXU | S_IRWXG | S_IRWXO)));
- return symlink_worker (buf, path, true, true);
-}
-
-extern "C" int
-mknod32 (const char *path, mode_t mode, __dev32_t dev)
-{
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- if (!*path)
- {
- set_errno (ENOENT);
- return -1;
- }
-
- if (strlen (path) >= PATH_MAX)
- return -1;
-
- path_conv w32path (path, PC_SYM_NOFOLLOW);
- if (w32path.exists ())
- {
- set_errno (EEXIST);
- return -1;
- }
-
- mode_t type = mode & S_IFMT;
- _major_t major = _major (dev);
- _minor_t minor = _minor (dev);
- switch (type)
- {
- case S_IFCHR:
- case S_IFBLK:
- break;
-
- case S_IFIFO:
- major = _major (FH_FIFO);
- minor = _minor (FH_FIFO);
- break;
-
- case 0:
- case S_IFREG:
- {
- int fd = open (path, O_CREAT, mode);
- if (fd < 0)
- return -1;
- close (fd);
- return 0;
- }
-
- default:
- set_errno (EINVAL);
- return -1;
- }
-
- return mknod_worker (w32path.get_win32 (), type, mode, major, minor);
-}
-
-extern "C" int
-mknod (const char *_path, mode_t mode, __dev16_t dev)
-{
- return mknod32 (_path, mode, (__dev32_t) dev);
-}
-
-extern "C" int
-mkfifo (const char *path, mode_t mode)
-{
- return mknod32 (path, (mode & ~S_IFMT) | S_IFIFO, 0);
-}
-
-/* seteuid: standards? */
-extern "C" int
-seteuid32 (__uid32_t uid)
-{
- debug_printf ("uid: %u myself->uid: %u myself->gid: %u",
- uid, myself->uid, myself->gid);
-
- if (uid == myself->uid && !cygheap->user.groups.ischanged)
- {
- debug_printf ("Nothing happens");
- return 0;
- }
-
- cygsid usersid;
- user_groups &groups = cygheap->user.groups;
- HANDLE new_token = INVALID_HANDLE_VALUE;
- struct passwd * pw_new;
- bool token_is_internal, issamesid = false;
-
- pw_new = internal_getpwuid (uid);
- if (!usersid.getfrompw (pw_new))
- {
- set_errno (EINVAL);
- return -1;
- }
-
- cygheap->user.deimpersonate ();
-
- /* Verify if the process token is suitable. */
- /* TODO, CV 2008-11-25: The check against saved_sid is a kludge and a
- shortcut. We must check if it's really feasible in the long run.
- The reason to add this shortcut is this: sshd switches back to the
- privileged user running sshd at least twice in the process of
- authentication. It calls seteuid first, then setegid. Due to this
- order, the setgroups group list is still active when calling seteuid
- and verify_token treats the original token of the privileged user as
- insufficient. This in turn results in creating a new user token for
- the privileged user instead of using the orignal token. This can have
- unfortunate side effects. The created token has different group
- memberships, different user rights, and misses possible network
- credentials.
- Therefore we try this shortcut now. When switching back to the
- privileged user, we probably always want a correct (aka original)
- user token for this privileged user, not only in sshd. */
- if ((uid == cygheap->user.saved_uid && usersid == cygheap->user.saved_sid ())
- || verify_token (hProcToken, usersid, groups))
- new_token = hProcToken;
- /* Verify if the external token is suitable */
- else if (cygheap->user.external_token != NO_IMPERSONATION
- && verify_token (cygheap->user.external_token, usersid, groups))
- new_token = cygheap->user.external_token;
- /* Verify if the current token (internal or former external) is suitable */
- else if (cygheap->user.curr_primary_token != NO_IMPERSONATION
- && cygheap->user.curr_primary_token != cygheap->user.external_token
- && verify_token (cygheap->user.curr_primary_token, usersid, groups,
- &token_is_internal))
- new_token = cygheap->user.curr_primary_token;
- /* Verify if the internal token is suitable */
- else if (cygheap->user.internal_token != NO_IMPERSONATION
- && cygheap->user.internal_token != cygheap->user.curr_primary_token
- && verify_token (cygheap->user.internal_token, usersid, groups,
- &token_is_internal))
- new_token = cygheap->user.internal_token;
-
- debug_printf ("Found token %d", new_token);
-
- /* If no impersonation token is available, try to authenticate using
- LSA private data stored password, LSA authentication using our own
- LSA module, or, as last chance, NtCreateToken. */
- if (new_token == INVALID_HANDLE_VALUE)
- {
- new_token = lsaprivkeyauth (pw_new);
- if (new_token)
- {
- /* We have to verify this token since settings in /etc/group
- might render it unusable im terms of group membership. */
- if (!verify_token (new_token, usersid, groups))
- {
- CloseHandle (new_token);
- new_token = NULL;
- }
- }
- if (!new_token)
- {
- debug_printf ("lsaprivkeyauth failed, try lsaauth.");
- if (!(new_token = lsaauth (usersid, groups, pw_new)))
- {
- debug_printf ("lsaauth failed, try create_token.");
- new_token = create_token (usersid, groups, pw_new);
- if (new_token == INVALID_HANDLE_VALUE)
- {
- debug_printf ("create_token failed, bail out of here");
- cygheap->user.reimpersonate ();
- return -1;
- }
- }
- }
-
- /* Keep at most one internal token */
- if (cygheap->user.internal_token != NO_IMPERSONATION)
- CloseHandle (cygheap->user.internal_token);
- cygheap->user.internal_token = new_token;
- }
-
- if (new_token != hProcToken)
- {
- /* Avoid having HKCU use default user */
- WCHAR name[128];
- load_registry_hive (usersid.string (name));
-
- /* Try setting owner to same value as user. */
- if (!SetTokenInformation (new_token, TokenOwner,
- &usersid, sizeof usersid))
- debug_printf ("SetTokenInformation(user.token, TokenOwner), %E");
- /* Try setting primary group in token to current group */
- if (!SetTokenInformation (new_token, TokenPrimaryGroup,
- &groups.pgsid, sizeof (cygsid)))
- debug_printf ("SetTokenInformation(user.token, TokenPrimaryGroup), %E");
- /* Try setting default DACL */
- PACL dacl_buf = (PACL) alloca (MAX_DACL_LEN (5));
- if (sec_acl (dacl_buf, true, true, usersid))
- {
- TOKEN_DEFAULT_DACL tdacl = { dacl_buf };
- if (!SetTokenInformation (new_token, TokenDefaultDacl,
- &tdacl, sizeof (tdacl)))
- debug_printf ("SetTokenInformation (TokenDefaultDacl), %E");
- }
- }
-
- issamesid = (usersid == cygheap->user.sid ());
- cygheap->user.set_sid (usersid);
- cygheap->user.curr_primary_token = new_token == hProcToken ? NO_IMPERSONATION
- : new_token;
- if (cygheap->user.curr_imp_token != NO_IMPERSONATION)
- {
- CloseHandle (cygheap->user.curr_imp_token);
- cygheap->user.curr_imp_token = NO_IMPERSONATION;
- }
- if (cygheap->user.curr_primary_token != NO_IMPERSONATION)
- {
- if (!DuplicateTokenEx (cygheap->user.curr_primary_token, MAXIMUM_ALLOWED,
- &sec_none, SecurityImpersonation,
- TokenImpersonation, &cygheap->user.curr_imp_token))
- {
- __seterrno ();
- cygheap->user.curr_primary_token = NO_IMPERSONATION;
- return -1;
- }
- set_cygwin_privileges (cygheap->user.curr_imp_token);
- }
- if (!cygheap->user.reimpersonate ())
- {
- __seterrno ();
- return -1;
- }
-
- cygheap->user.set_name (pw_new->pw_name);
- myself->uid = uid;
- groups.ischanged = FALSE;
- if (!issamesid)
- /* Recreate and fill out the user shared region for a new user. */
- user_shared_create (true);
- return 0;
-}
-
-extern "C" int
-seteuid (__uid16_t uid)
-{
- return seteuid32 (uid16touid32 (uid));
-}
-
-/* setuid: POSIX 4.2.2.1 */
-extern "C" int
-setuid32 (__uid32_t uid)
-{
- int ret = seteuid32 (uid);
- if (!ret)
- cygheap->user.real_uid = myself->uid;
- debug_printf ("real: %d, effective: %d", cygheap->user.real_uid, myself->uid);
- return ret;
-}
-
-extern "C" int
-setuid (__uid16_t uid)
-{
- return setuid32 (uid16touid32 (uid));
-}
-
-extern "C" int
-setreuid32 (__uid32_t ruid, __uid32_t euid)
-{
- int ret = 0;
- bool tried = false;
- __uid32_t old_euid = myself->uid;
-
- if (ruid != ILLEGAL_UID && cygheap->user.real_uid != ruid && euid != ruid)
- tried = !(ret = seteuid32 (ruid));
- if (!ret && euid != ILLEGAL_UID)
- ret = seteuid32 (euid);
- if (tried && (ret || euid == ILLEGAL_UID) && seteuid32 (old_euid))
- system_printf ("Cannot restore original euid %u", old_euid);
- if (!ret && ruid != ILLEGAL_UID)
- cygheap->user.real_uid = ruid;
- debug_printf ("real: %u, effective: %u", cygheap->user.real_uid, myself->uid);
- return ret;
-}
-
-extern "C" int
-setreuid (__uid16_t ruid, __uid16_t euid)
-{
- return setreuid32 (uid16touid32 (ruid), uid16touid32 (euid));
-}
-
-/* setegid: from System V. */
-extern "C" int
-setegid32 (__gid32_t gid)
-{
- debug_printf ("new egid: %u current: %u", gid, myself->gid);
-
- if (gid == myself->gid)
- {
- myself->gid = gid;
- return 0;
- }
-
- user_groups * groups = &cygheap->user.groups;
- cygsid gsid;
- struct __group32 * gr = internal_getgrgid (gid);
-
- if (!gsid.getfromgr (gr))
- {
- set_errno (EINVAL);
- return -1;
- }
- myself->gid = gid;
-
- groups->update_pgrp (gsid);
- if (cygheap->user.issetuid ())
- {
- /* If impersonated, update impersonation token... */
- if (!SetTokenInformation (cygheap->user.primary_token (),
- TokenPrimaryGroup, &gsid, sizeof gsid))
- debug_printf ("SetTokenInformation(primary_token, "
- "TokenPrimaryGroup), %E");
- if (!SetTokenInformation (cygheap->user.imp_token (), TokenPrimaryGroup,
- &gsid, sizeof gsid))
- debug_printf ("SetTokenInformation(token, TokenPrimaryGroup), %E");
- }
- cygheap->user.deimpersonate ();
- if (!SetTokenInformation (hProcToken, TokenPrimaryGroup, &gsid, sizeof gsid))
- debug_printf ("SetTokenInformation(hProcToken, TokenPrimaryGroup), %E");
- clear_procimptoken ();
- cygheap->user.reimpersonate ();
- return 0;
-}
-
-extern "C" int
-setegid (__gid16_t gid)
-{
- return setegid32 (gid16togid32 (gid));
-}
-
-/* setgid: POSIX 4.2.2.1 */
-extern "C" int
-setgid32 (__gid32_t gid)
-{
- int ret = setegid32 (gid);
- if (!ret)
- cygheap->user.real_gid = myself->gid;
- return ret;
-}
-
-extern "C" int
-setgid (__gid16_t gid)
-{
- int ret = setegid32 (gid16togid32 (gid));
- if (!ret)
- cygheap->user.real_gid = myself->gid;
- return ret;
-}
-
-extern "C" int
-setregid32 (__gid32_t rgid, __gid32_t egid)
-{
- int ret = 0;
- bool tried = false;
- __gid32_t old_egid = myself->gid;
-
- if (rgid != ILLEGAL_GID && cygheap->user.real_gid != rgid && egid != rgid)
- tried = !(ret = setegid32 (rgid));
- if (!ret && egid != ILLEGAL_GID)
- ret = setegid32 (egid);
- if (tried && (ret || egid == ILLEGAL_GID) && setegid32 (old_egid))
- system_printf ("Cannot restore original egid %u", old_egid);
- if (!ret && rgid != ILLEGAL_GID)
- cygheap->user.real_gid = rgid;
- debug_printf ("real: %u, effective: %u", cygheap->user.real_gid, myself->gid);
- return ret;
-}
-
-extern "C" int
-setregid (__gid16_t rgid, __gid16_t egid)
-{
- return setregid32 (gid16togid32 (rgid), gid16togid32 (egid));
-}
-
-/* chroot: privileged Unix system call. */
-/* FIXME: Not privileged here. How should this be done? */
-extern "C" int
-chroot (const char *newroot)
-{
- path_conv path (newroot, PC_SYM_FOLLOW | PC_POSIX);
-
- int ret = -1;
- if (path.error)
- set_errno (path.error);
- else if (!path.exists ())
- set_errno (ENOENT);
- else if (!path.isdir ())
- set_errno (ENOTDIR);
- else if (path.isspecial ())
- set_errno (EPERM);
- else
- {
- getwinenv("PATH="); /* Save the native PATH */
- cygheap->root.set (path.normalized_path, path.get_win32 (),
- !!path.objcaseinsensitive ());
- ret = 0;
- }
-
- syscall_printf ("%d = chroot (%s)", ret ? get_errno () : 0,
- newroot ? newroot : "NULL");
- return ret;
-}
-
-extern "C" int
-creat (const char *path, mode_t mode)
-{
- return open (path, O_WRONLY | O_CREAT | O_TRUNC, mode);
-}
-
-extern "C" void
-__assertfail ()
-{
- exit (99);
-}
-
-extern "C" int
-vhangup ()
-{
- set_errno (ENOSYS);
- return -1;
-}
-
-extern "C" int
-setpriority (int which, id_t who, int value)
-{
- DWORD prio = nice_to_winprio (value);
- int error = 0;
-
- switch (which)
- {
- case PRIO_PROCESS:
- if (!who)
- who = myself->pid;
- if ((pid_t) who == myself->pid)
- {
- if (!SetPriorityClass (hMainProc, prio))
- {
- set_errno (EACCES);
- return -1;
- }
- myself->nice = value;
- debug_printf ("Set nice to %d", myself->nice);
- return 0;
- }
- break;
- case PRIO_PGRP:
- if (!who)
- who = myself->pgid;
- break;
- case PRIO_USER:
- if (!who)
- who = myself->uid;
- break;
- default:
- set_errno (EINVAL);
- return -1;
- }
- winpids pids ((DWORD) PID_MAP_RW);
- for (DWORD i = 0; i < pids.npids; ++i)
- {
- _pinfo *p = pids[i];
- if (p)
- {
- switch (which)
- {
- case PRIO_PROCESS:
- if ((pid_t) who != p->pid)
- continue;
- break;
- case PRIO_PGRP:
- if ((pid_t) who != p->pgid)
- continue;
- break;
- case PRIO_USER:
- if ((__uid32_t) who != p->uid)
- continue;
- break;
- }
- HANDLE proc_h = OpenProcess (PROCESS_SET_INFORMATION, FALSE,
- p->dwProcessId);
- if (!proc_h)
- error = EPERM;
- else
- {
- if (!SetPriorityClass (proc_h, prio))
- error = EACCES;
- else
- p->nice = value;
- CloseHandle (proc_h);
- }
- }
- }
- pids.reset ();
- if (error)
- {
- set_errno (error);
- return -1;
- }
- return 0;
-}
-
-extern "C" int
-getpriority (int which, id_t who)
-{
- int nice = NZERO * 2; /* Illegal value */
-
- switch (which)
- {
- case PRIO_PROCESS:
- if (!who)
- who = myself->pid;
- if ((pid_t) who == myself->pid)
- return myself->nice;
- break;
- case PRIO_PGRP:
- if (!who)
- who = myself->pgid;
- break;
- case PRIO_USER:
- if (!who)
- who = myself->uid;
- break;
- default:
- set_errno (EINVAL);
- return -1;
- }
- winpids pids ((DWORD) 0);
- for (DWORD i = 0; i < pids.npids; ++i)
- {
- _pinfo *p = pids[i];
- if (p)
- switch (which)
- {
- case PRIO_PROCESS:
- if ((pid_t) who == p->pid)
- {
- nice = p->nice;
- goto out;
- }
- break;
- case PRIO_PGRP:
- if ((pid_t) who == p->pgid && p->nice < nice)
- nice = p->nice;
- break;
- case PRIO_USER:
- if ((__uid32_t) who == p->uid && p->nice < nice)
- nice = p->nice;
- break;
- }
- }
-out:
- pids.reset ();
- if (nice == NZERO * 2)
- {
- set_errno (ESRCH);
- return -1;
- }
- return nice;
-}
-
-extern "C" int
-nice (int incr)
-{
- return setpriority (PRIO_PROCESS, myself->pid, myself->nice + incr);
-}
-
-/*
- * Find the first bit set in I.
- */
-
-extern "C" int
-ffs (int i)
-{
- static const unsigned char table[] =
- {
- 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
- 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
- };
- unsigned long int a;
- unsigned long int x = i & -i;
-
- a = x <= 0xffff ? (x <= 0xff ? 0 : 8) : (x <= 0xffffff ? 16 : 24);
-
- return table[x >> a] + a;
-}
-
-static void
-locked_append (int fd, const void * buf, size_t size)
-{
- struct __flock64 lock_buffer = {F_WRLCK, SEEK_SET, 0, 0, 0};
- int count = 0;
-
- do
- if ((lock_buffer.l_start = lseek64 (fd, 0, SEEK_END)) != (_off64_t) -1
- && fcntl64 (fd, F_SETLKW, &lock_buffer) != -1)
- {
- if (lseek64 (fd, 0, SEEK_END) != (_off64_t) -1)
- write (fd, buf, size);
- lock_buffer.l_type = F_UNLCK;
- fcntl64 (fd, F_SETLK, &lock_buffer);
- break;
- }
- while (count++ < 1000
- && (errno == EACCES || errno == EAGAIN)
- && !usleep (1000));
-}
-
-extern "C" void
-updwtmp (const char *wtmp_file, const struct utmp *ut)
-{
- int fd;
-
- if ((fd = open (wtmp_file, O_WRONLY | O_BINARY, 0)) >= 0)
- {
- locked_append (fd, ut, sizeof *ut);
- close (fd);
- }
-}
-
-static int utmp_fd = -1;
-static bool utmp_readonly = false;
-static char *utmp_file = (char *) _PATH_UTMP;
-
-static void
-internal_setutent (bool force_readwrite)
-{
- if (force_readwrite && utmp_readonly)
- endutent ();
- if (utmp_fd < 0)
- {
- utmp_fd = open (utmp_file, O_RDWR | O_BINARY);
- /* If open fails, we assume an unprivileged process (who?). In this
- case we try again for reading only unless the process calls
- pututline() (==force_readwrite) in which case opening just fails. */
- if (utmp_fd < 0 && !force_readwrite)
- {
- utmp_fd = open (utmp_file, O_RDONLY | O_BINARY);
- if (utmp_fd >= 0)
- utmp_readonly = true;
- }
- }
- else
- lseek (utmp_fd, 0, SEEK_SET);
-}
-
-extern "C" void
-setutent ()
-{
- internal_setutent (false);
-}
-
-extern "C" void
-endutent ()
-{
- if (utmp_fd >= 0)
- {
- close (utmp_fd);
- utmp_fd = -1;
- utmp_readonly = false;
- }
-}
-
-extern "C" void
-utmpname (const char *file)
-{
- myfault efault;
- if (efault.faulted () || !*file)
- {
- debug_printf ("Invalid file");
- return;
- }
- endutent ();
- utmp_file = strdup (file);
- debug_printf ("New UTMP file: %s", utmp_file);
-}
-EXPORT_ALIAS (utmpname, utmpxname)
-
-/* Note: do not make NO_COPY */
-static struct utmp utmp_data_buf[16];
-static unsigned utix = 0;
-#define nutdbuf (sizeof (utmp_data_buf) / sizeof (utmp_data_buf[0]))
-#define utmp_data ({ \
- if (utix > nutdbuf) \
- utix = 0; \
- utmp_data_buf + utix++; \
-})
-
-static struct utmpx *
-copy_ut_to_utx (struct utmp *ut, struct utmpx *utx)
-{
- if (!ut)
- return NULL;
- memcpy (utx, ut, sizeof *ut);
- utx->ut_tv.tv_sec = ut->ut_time;
- utx->ut_tv.tv_usec = 0;
- return utx;
-}
-
-extern "C" struct utmp *
-getutent ()
-{
- if (utmp_fd < 0)
- {
- internal_setutent (false);
- if (utmp_fd < 0)
- return NULL;
- }
-
- utmp *ut = utmp_data;
- if (read (utmp_fd, ut, sizeof *ut) != sizeof *ut)
- return NULL;
- return ut;
-}
-
-extern "C" struct utmp *
-getutid (const struct utmp *id)
-{
- myfault efault;
- if (efault.faulted (EFAULT))
- return NULL;
- if (utmp_fd < 0)
- {
- internal_setutent (false);
- if (utmp_fd < 0)
- return NULL;
- }
-
- utmp *ut = utmp_data;
- while (read (utmp_fd, ut, sizeof *ut) == sizeof *ut)
- {
- switch (id->ut_type)
- {
- case RUN_LVL:
- case BOOT_TIME:
- case OLD_TIME:
- case NEW_TIME:
- if (id->ut_type == ut->ut_type)
- return ut;
- break;
- case INIT_PROCESS:
- case LOGIN_PROCESS:
- case USER_PROCESS:
- case DEAD_PROCESS:
- if (strncmp (id->ut_id, ut->ut_id, UT_IDLEN) == 0)
- return ut;
- break;
- default:
- return NULL;
- }
- }
- return NULL;
-}
-
-extern "C" struct utmp *
-getutline (const struct utmp *line)
-{
- myfault efault;
- if (efault.faulted (EFAULT))
- return NULL;
- if (utmp_fd < 0)
- {
- internal_setutent (false);
- if (utmp_fd < 0)
- return NULL;
- }
-
- utmp *ut = utmp_data;
- while (read (utmp_fd, ut, sizeof *ut) == sizeof *ut)
- if ((ut->ut_type == LOGIN_PROCESS ||
- ut->ut_type == USER_PROCESS) &&
- !strncmp (ut->ut_line, line->ut_line, sizeof (ut->ut_line)))
- return ut;
-
- return NULL;
-}
-
-extern "C" struct utmp *
-pututline (const struct utmp *ut)
-{
- myfault efault;
- if (efault.faulted (EFAULT))
- return NULL;
- internal_setutent (true);
- if (utmp_fd < 0)
- {
- debug_printf ("error: utmp_fd %d", utmp_fd);
- return NULL;
- }
- debug_printf ("ut->ut_type %d, ut->ut_pid %d, ut->ut_line '%s', ut->ut_id '%s'\n",
- ut->ut_type, ut->ut_pid, ut->ut_line, ut->ut_id);
- debug_printf ("ut->ut_user '%s', ut->ut_host '%s'\n",
- ut->ut_user, ut->ut_host);
-
- struct utmp *u;
- if ((u = getutid (ut)))
- {
- lseek (utmp_fd, -sizeof *ut, SEEK_CUR);
- write (utmp_fd, ut, sizeof *ut);
- }
- else
- locked_append (utmp_fd, ut, sizeof *ut);
- /* The documentation says to return a pointer to this which implies that
- this has to be cast from a const. That doesn't seem right but the
- documentation seems pretty clear on this. */
- return (struct utmp *) ut;
-}
-
-extern "C" void
-setutxent ()
-{
- internal_setutent (false);
-}
-
-extern "C" void
-endutxent ()
-{
- endutent ();
-}
-
-extern "C" struct utmpx *
-getutxent ()
-{
- /* UGH. Not thread safe. */
- static struct utmpx utx;
- return copy_ut_to_utx (getutent (), &utx);
-}
-
-extern "C" struct utmpx *
-getutxid (const struct utmpx *id)
-{
- /* UGH. Not thread safe. */
- static struct utmpx utx;
-
- myfault efault;
- if (efault.faulted (EFAULT))
- return NULL;
- ((struct utmpx *)id)->ut_time = id->ut_tv.tv_sec;
- return copy_ut_to_utx (getutid ((struct utmp *) id), &utx);
-}
-
-extern "C" struct utmpx *
-getutxline (const struct utmpx *line)
-{
- /* UGH. Not thread safe. */
- static struct utmpx utx;
-
- myfault efault;
- if (efault.faulted (EFAULT))
- return NULL;
- ((struct utmpx *)line)->ut_time = line->ut_tv.tv_sec;
- return copy_ut_to_utx (getutline ((struct utmp *) line), &utx);
-}
-
-extern "C" struct utmpx *
-pututxline (const struct utmpx *utmpx)
-{
- /* UGH. Not thread safe. */
- static struct utmpx utx;
-
- myfault efault;
- if (efault.faulted (EFAULT))
- return NULL;
- ((struct utmpx *)utmpx)->ut_time = utmpx->ut_tv.tv_sec;
- return copy_ut_to_utx (pututline ((struct utmp *) utmpx), &utx);
-}
-
-extern "C" void
-updwtmpx (const char *wtmpx_file, const struct utmpx *utmpx)
-{
- ((struct utmpx *)utmpx)->ut_time = utmpx->ut_tv.tv_sec;
- updwtmp (wtmpx_file, (const struct utmp *) utmpx);
-}
-
-extern "C"
-long gethostid (void)
-{
- unsigned data[13] = {0x92895012,
- 0x10293412,
- 0x29602018,
- 0x81928167,
- 0x34601329,
- 0x75630198,
- 0x89860395,
- 0x62897564,
- 0x00194362,
- 0x20548593,
- 0x96839102,
- 0x12219854,
- 0x00290012};
-
- bool has_cpuid = false;
-
- DWORD opmask = SetThreadAffinityMask (GetCurrentThread (), 1);
- if (!opmask)
- debug_printf ("SetThreadAffinityMask to 1 failed, %E");
-
- if (!can_set_flag (0x00040000))
- debug_printf ("386 processor - no cpuid");
- else
- {
- debug_printf ("486 processor");
- if (can_set_flag (0x00200000))
- {
- debug_printf ("processor supports CPUID instruction");
- has_cpuid = true;
- }
- else
- debug_printf ("processor does not support CPUID instruction");
- }
- if (has_cpuid)
- {
- unsigned maxf, unused[3];
- cpuid (&maxf, &unused[0], &unused[1], &unused[2], 0);
- maxf &= 0xffff;
- if (maxf >= 1)
- {
- unsigned features;
- cpuid (&data[0], &unused[0], &unused[1], &features, 1);
- if (features & (1 << 18))
- {
- debug_printf ("processor has psn");
- if (maxf >= 3)
- {
- cpuid (&unused[0], &unused[1], &data[1], &data[2], 3);
- debug_printf ("Processor PSN: %04x-%04x-%04x-%04x-%04x-%04x",
- data[0] >> 16, data[0] & 0xffff, data[2] >> 16, data[2] & 0xffff, data[1] >> 16, data[1] & 0xffff);
- }
- }
- else
- debug_printf ("processor does not have psn");
- }
- }
-
- UUID Uuid;
- RPC_STATUS status = UuidCreateSequential (&Uuid);
- if (GetLastError () == ERROR_PROC_NOT_FOUND)
- status = UuidCreate (&Uuid);
- if (status == RPC_S_OK)
- {
- data[4] = *(unsigned *)&Uuid.Data4[2];
- data[5] = *(unsigned short *)&Uuid.Data4[6];
- // Unfortunately Windows will sometimes pick a virtual Ethernet card
- // e.g. VMWare Virtual Ethernet Adaptor
- debug_printf ("MAC address of first Ethernet card: %02x:%02x:%02x:%02x:%02x:%02x",
- Uuid.Data4[2], Uuid.Data4[3], Uuid.Data4[4],
- Uuid.Data4[5], Uuid.Data4[6], Uuid.Data4[7]);
- }
- else
- {
- debug_printf ("no Ethernet card installed");
- }
-
- reg_key key (HKEY_LOCAL_MACHINE, KEY_READ, "SOFTWARE", "Microsoft", "Windows", "CurrentVersion", NULL);
- key.get_string ("ProductId", (char *)&data[6], 24, "00000-000-0000000-00000");
- debug_printf ("Windows Product ID: %s", (char *)&data[6]);
-
- /* Contrary to MSDN, NT4 requires the second argument
- or a STATUS_ACCESS_VIOLATION is generated */
- ULARGE_INTEGER availb;
- GetDiskFreeSpaceEx ("C:\\", &availb, (PULARGE_INTEGER) &data[11], NULL);
-
- debug_printf ("hostid entropy: %08x %08x %08x %08x "
- "%08x %08x %08x %08x "
- "%08x %08x %08x %08x "
- "%08x",
- data[0], data[1],
- data[2], data[3],
- data[4], data[5],
- data[6], data[7],
- data[8], data[9],
- data[10], data[11],
- data[12]);
-
- long hostid = 0x40291372;
- // a random hashing algorithm
- // dependancy on md5 is probably too costly
- for (int i=0;i<13;i++)
- hostid ^= ((data[i] << (i << 2)) | (data[i] >> (32 - (i << 2))));
-
- if (opmask && !SetThreadAffinityMask (GetCurrentThread (), opmask))
- debug_printf ("SetThreadAffinityMask to %p failed, %E", opmask);
-
- debug_printf ("hostid: %08x", hostid);
-
- return hostid;
-}
-
-#define ETC_SHELLS "/etc/shells"
-static int shell_index;
-static struct __sFILE64 *shell_fp;
-
-extern "C" char *
-getusershell ()
-{
- /* List of default shells if no /etc/shells exists, defined as on Linux.
- FIXME: SunOS has a far longer list, containing all shells which
- might be shipped with the OS. Should we do the same for the Cygwin
- distro, adding bash, tcsh, ksh, pdksh and zsh? */
- static NO_COPY const char *def_shells[] = {
- "/bin/sh",
- "/bin/csh",
- "/usr/bin/sh",
- "/usr/bin/csh",
- NULL
- };
- static char buf[PATH_MAX];
- int ch, buf_idx;
-
- if (!shell_fp && !(shell_fp = fopen64 (ETC_SHELLS, "rt")))
- {
- if (def_shells[shell_index])
- return strcpy (buf, def_shells[shell_index++]);
- return NULL;
- }
- /* Skip white space characters. */
- while ((ch = getc (shell_fp)) != EOF && isspace (ch))
- ;
- /* Get each non-whitespace character as part of the shell path as long as
- it fits in buf. */
- for (buf_idx = 0;
- ch != EOF && !isspace (ch) && buf_idx < PATH_MAX;
- buf_idx++, ch = getc (shell_fp))
- buf[buf_idx] = ch;
- /* Skip any trailing non-whitespace character not fitting in buf. If the
- path is longer than PATH_MAX, it's invalid anyway. */
- while (ch != EOF && !isspace (ch))
- ch = getc (shell_fp);
- if (buf_idx)
- {
- buf[buf_idx] = '\0';
- return buf;
- }
- return NULL;
-}
-
-extern "C" void
-setusershell ()
-{
- if (shell_fp)
- fseek (shell_fp, 0L, SEEK_SET);
- shell_index = 0;
-}
-
-extern "C" void
-endusershell ()
-{
- if (shell_fp)
- {
- fclose (shell_fp);
- shell_fp = NULL;
- }
- shell_index = 0;
-}
-
-extern "C" void
-flockfile (FILE *file)
-{
- _flockfile (file);
-}
-
-extern "C" int
-ftrylockfile (FILE *file)
-{
- return _ftrylockfile (file);
-}
-
-extern "C" void
-funlockfile (FILE *file)
-{
- _funlockfile (file);
-}
-
-extern "C" FILE *
-popen (const char *command, const char *in_type)
-{
- const char *type = in_type;
- char rw = *type++;
-
- if (*type == 'b' || *type == 't')
- type++;
- if ((rw != 'r' && rw != 'w') || (*type != '\0'))
- {
- set_errno (EINVAL);
- return NULL;
- }
-
- int fd, other_fd, __stdin, __stdout, stdwhat;
-
- int fds[2];
- if (pipe (fds) < 0)
- return NULL;
-
- switch (rw)
- {
- case 'r':
- __stdin = -1;
- stdwhat = 1;
- other_fd = __stdout = fds[1];
- fd = fds[0];
- break;
- case 'w':
- __stdout = -1;
- stdwhat = 0;
- other_fd = __stdin = fds[0];
- fd = fds[1];
- break;
- default:
- return NULL; /* avoid a compiler warning */
- }
-
- FILE *fp = fdopen (fd, in_type);
- fcntl64 (fd, F_SETFD, fcntl64 (fd, F_GETFD, 0) | FD_CLOEXEC);
-
- if (!fp)
- goto err;
-
- pid_t pid;
- const char *argv[4];
-
- argv[0] = "/bin/sh";
- argv[1] = "-c";
- argv[2] = command;
- argv[3] = NULL;
-
- {
- lock_process now;
- int state = fcntl64 (stdwhat, F_GETFD, 0);
- fcntl64 (stdwhat, F_SETFD, state | FD_CLOEXEC);
- pid = spawn_guts ("/bin/sh", argv, cur_environ (), _P_NOWAIT,
- __stdin, __stdout);
- fcntl64 (stdwhat, F_SETFD, state);
- }
-
- if (pid >= 0)
- {
- close (other_fd);
- fhandler_pipe *fh = (fhandler_pipe *) cygheap->fdtab[fd];
- fh->set_popen_pid (pid);
- return fp;
- }
-
-err:
- int save_errno = get_errno ();
- close (fds[0]);
- close (fds[1]);
- set_errno (save_errno);
- return NULL;
-}
-
-int
-pclose (FILE *fp)
-{
- fhandler_pipe *fh = (fhandler_pipe *) cygheap->fdtab[fileno(fp)];
-
- if (fh->get_device () != FH_PIPEW && fh->get_device () != FH_PIPER)
- {
- set_errno (EBADF);
- return -1;
- }
-
- int pid = fh->get_popen_pid ();
- if (!pid)
- {
- set_errno (ECHILD);
- return -1;
- }
-
- if (fclose (fp))
- return -1;
-
- int status;
- while (1)
- if (waitpid (pid, &status, 0) == pid)
- break;
- else if (get_errno () == EINTR)
- continue;
- else
- return -1;
-
- return status;
-}
-
-/* Preliminary(?) implementation of the openat family of functions. */
-
-static int
-gen_full_path_at (char *path_ret, int dirfd, const char *pathname,
- bool null_pathname_allowed = false)
-{
- /* Set null_pathname_allowed to true to allow GLIBC compatible behaviour
- for NULL pathname. Only used by futimesat. */
- if (!pathname && !null_pathname_allowed)
- {
- set_errno (EFAULT);
- return -1;
- }
- if (pathname)
- {
- if (!*pathname)
- {
- set_errno (ENOENT);
- return -1;
- }
- if (strlen (pathname) >= PATH_MAX)
- {
- set_errno (ENAMETOOLONG);
- return -1;
- }
- }
- if (pathname && isabspath (pathname))
- stpcpy (path_ret, pathname);
- else
- {
- char *p;
-
- if (dirfd == AT_FDCWD)
- p = stpcpy (path_ret, cygheap->cwd.posix);
- else
- {
- cygheap_fdget cfd (dirfd);
- if (cfd < 0)
- return -1;
- if (!cfd->pc.isdir ())
- {
- set_errno (ENOTDIR);
- return -1;
- }
- p = stpcpy (path_ret, cfd->get_name ());
- }
- if (!p)
- {
- set_errno (ENOTDIR);
- return -1;
- }
- if (pathname)
- {
- if (p[-1] != '/')
- *p++ = '/';
- stpcpy (p, pathname);
- }
- }
- return 0;
-}
-
-extern "C" int
-openat (int dirfd, const char *pathname, int flags, ...)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
-
- va_list ap;
- mode_t mode;
-
- va_start (ap, flags);
- mode = va_arg (ap, mode_t);
- va_end (ap);
- return open (path, flags, mode);
-}
-
-extern "C" int
-faccessat (int dirfd, const char *pathname, int mode, int flags)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
-
- int res = -1;
- char *path = tp.c_get ();
- if (!gen_full_path_at (path, dirfd, pathname))
- {
- if (flags & ~(F_OK|R_OK|W_OK|X_OK))
- set_errno (EINVAL);
- else
- {
- fhandler_base *fh = build_fh_name (path, NULL,
- (flags & AT_SYMLINK_NOFOLLOW)
- ? PC_SYM_NOFOLLOW : PC_SYM_FOLLOW,
- stat_suffixes);
- if (fh)
- {
- res = fh->fhaccess (mode);
- delete fh;
- }
- }
- }
- debug_printf ("returning %d", res);
- return res;
-}
-
-extern "C" int
-fchmodat (int dirfd, const char *pathname, mode_t mode, int flags)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
- return chmod (path, mode);
-}
-
-extern "C" int
-fchownat (int dirfd, const char *pathname, __uid32_t uid, __gid32_t gid,
- int flags)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
- return chown_worker (path, (flags & AT_SYMLINK_NOFOLLOW)
- ? PC_SYM_NOFOLLOW : PC_SYM_FOLLOW, uid, gid);
-}
-
-extern "C" int
-fstatat (int dirfd, const char *pathname, struct __stat64 *st, int flags)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
- return (flags & AT_SYMLINK_NOFOLLOW) ? lstat64 (path, st) : stat64 (path, st);
-}
-
-extern int utimens_worker (path_conv &, const struct timespec *);
-
-extern "C" int
-utimensat (int dirfd, const char *pathname, const struct timespec *times,
- int flags)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
- path_conv win32 (path, PC_POSIX | ((flags & AT_SYMLINK_NOFOLLOW)
- ? PC_SYM_NOFOLLOW : PC_SYM_FOLLOW),
- stat_suffixes);
- return utimens_worker (win32, times);
-}
-
-extern "C" int
-futimesat (int dirfd, const char *pathname, const struct timeval *times)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname, true))
- return -1;
- return utimes (path, times);
-}
-
-extern "C" int
-linkat (int olddirfd, const char *oldpathname,
- int newdirfd, const char *newpathname,
- int flags)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *oldpath = tp.c_get ();
- if (gen_full_path_at (oldpath, olddirfd, oldpathname))
- return -1;
- char *newpath = tp.c_get ();
- if (gen_full_path_at (newpath, newdirfd, newpathname))
- return -1;
- if (flags & AT_SYMLINK_FOLLOW)
- {
- path_conv old_name (oldpath, PC_SYM_FOLLOW | PC_POSIX, stat_suffixes);
- if (old_name.error)
- {
- set_errno (old_name.error);
- return -1;
- }
- strcpy (oldpath, old_name.normalized_path);
- }
- return link (oldpath, newpath);
-}
-
-extern "C" int
-mkdirat (int dirfd, const char *pathname, mode_t mode)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
- return mkdir (path, mode);
-}
-
-extern "C" int
-mkfifoat (int dirfd, const char *pathname, mode_t mode)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
- return mkfifo (path, mode);
-}
-
-extern "C" int
-mknodat (int dirfd, const char *pathname, mode_t mode, __dev32_t dev)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
- return mknod32 (path, mode, dev);
-}
-
-extern "C" ssize_t
-readlinkat (int dirfd, const char *pathname, char *buf, size_t bufsize)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
- return readlink (path, buf, bufsize);
-}
-
-extern "C" int
-renameat (int olddirfd, const char *oldpathname,
- int newdirfd, const char *newpathname)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *oldpath = tp.c_get ();
- if (gen_full_path_at (oldpath, olddirfd, oldpathname))
- return -1;
- char *newpath = tp.c_get ();
- if (gen_full_path_at (newpath, newdirfd, newpathname))
- return -1;
- return rename (oldpath, newpath);
-}
-
-extern "C" int
-symlinkat (const char *oldpath, int newdirfd, const char *newpathname)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *newpath = tp.c_get ();
- if (gen_full_path_at (newpath, newdirfd, newpathname))
- return -1;
- return symlink (oldpath, newpath);
-}
-
-extern "C" int
-unlinkat (int dirfd, const char *pathname, int flags)
-{
- tmp_pathbuf tp;
- myfault efault;
- if (efault.faulted (EFAULT))
- return -1;
- char *path = tp.c_get ();
- if (gen_full_path_at (path, dirfd, pathname))
- return -1;
- return (flags & AT_REMOVEDIR) ? rmdir (path) : unlink (path);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-27 04:32:57 +0300