* Makefile.in (clean): Remove non-existant regexp dir.
* collate.h: New header. (__collate_range_cmp): Declare. (__collate_load_error): Define. * glob.cc: Pull in latest version from FreeBSD. Simplify and reduce Cygwin-specific changes. * regex/regcomp.c: Include collate.h on Cygwin as well. (__collate_range_cmp): Move from here... * nlsfuncs.cc (__collate_range_cmp): ...to here. * miscfuncs.cc (thread_wrapper): Fix typo in comment. (CygwinCreateThread): Take dead zone of Windows stack into account. Change the way how the stack is commited and how to handle guardpages. Explain how and why. * thread.h (PTHREAD_DEFAULT_STACKSIZE): Change definition. Explain why.
This commit is contained in:
Corinna Vinschen
parent
e633eaec08
commit
d7bcd2a16f
@ -1,3 +1,22 @@
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2012-02-13 Corinna Vinschen <corinna@vinschen.de>
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* Makefile.in (clean): Remove non-existant regexp dir.
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* collate.h: New header.
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(__collate_range_cmp): Declare.
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(__collate_load_error): Define.
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* glob.cc: Pull in latest version from FreeBSD. Simplify and reduce
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Cygwin-specific changes.
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* regex/regcomp.c: Include collate.h on Cygwin as well.
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(__collate_range_cmp): Move from here...
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* nlsfuncs.cc (__collate_range_cmp): ...to here.
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* miscfuncs.cc (thread_wrapper): Fix typo in comment.
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(CygwinCreateThread): Take dead zone of Windows stack into account.
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Change the way how the stack is commited and how to handle guardpages.
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Explain how and why.
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* thread.h (PTHREAD_DEFAULT_STACKSIZE): Change definition. Explain why.
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2012-02-12 Yaakov Selkowitz <yselkowitz@users.sourceforg.net>
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* include/pthread.h: Include time.h as required by POSIX.
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@ -383,7 +383,7 @@ uninstall-man:
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done
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clean:
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-rm -f *.o *.dll *.dbg *.a *.exp junk *.base version.cc regexp/*.o winver_stamp *.exe *.d *stamp* *_magic.h sigfe.s cygwin.def globals.h $(srcdir)/tlsoffsets.h $(srcdir)/devices.cc
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-rm -f *.o *.dll *.dbg *.a *.exp junk *.base version.cc winver_stamp *.exe *.d *stamp* *_magic.h sigfe.s cygwin.def globals.h $(srcdir)/tlsoffsets.h $(srcdir)/devices.cc
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-@$(MAKE) -C $(bupdir)/cygserver libclean
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maintainer-clean realclean: clean
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23
winsup/cygwin/collate.h
Normal file
23
winsup/cygwin/collate.h
Normal file
@ -0,0 +1,23 @@
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/* collate.h: Internal BSD libc header, used in glob and regcomp, for instance.
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Copyright 2012 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* We never have a collate load error. */
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const int __collate_load_error = 0;
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int __collate_range_cmp (int c1, int c2);
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#ifdef __cplusplus
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};
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#endif
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@ -33,9 +33,8 @@
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93";
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#endif /* LIBC_SCCS and not lint */
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#ifdef __CYGWIN
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__FBSDID("$FreeBSD: /repoman/r/ncvs/src/lib/libc/gen/glob.c,v 1.25 2006/06/05 18:22:13 delphij Exp $");
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD: src/lib/libc/gen/glob.c,v 1.28 2010/05/12 17:44:00 gordon Exp $");
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/*
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* glob(3) -- a superset of the one defined in POSIX 1003.2.
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@ -72,35 +71,45 @@ __FBSDID("$FreeBSD: /repoman/r/ncvs/src/lib/libc/gen/glob.c,v 1.25 2006/06/05 18
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* 3. State-dependent encodings are not currently supported.
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*/
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#ifdef __CYGWIN__
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#include "winsup.h"
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#endif
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <errno.h>
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#include <glob.h>
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#include <limits.h>
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#include <pwd.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <wchar.h>
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//#include "collate.h"
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#include "collate.h"
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#include "cygerrno.h"
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#include "security.h"
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#ifdef __CYGWIN__
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#include <wctype.h>
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#include "path.h"
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#include "fhandler.h"
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#include "dtable.h"
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#include "cygheap.h"
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#include "perprocess.h"
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#include "cygwin/version.h"
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#ifndef ARG_MAX
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#define ARG_MAX 32000 /* See CreateProcess */
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#endif
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#define getpwuid(uid) getpwuid32 (uid)
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#define getuid() getuid32 ()
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#define issetugid() (cygheap->user.issetuid ())
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#undef MAXPATHLEN
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#define MAXPATHLEN 16384
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#define stat __stat64
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#define CCHAR(c) (ignore_case_with_glob ? towlower (CHAR (c)) : CHAR (c))
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#define Cchar(c) (ignore_case_with_glob ? towlower (c) : (c))
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#endif
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#define DOLLAR '$'
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#define DOT '.'
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@ -154,19 +163,19 @@ typedef char Char;
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static int compare(const void *, const void *);
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static int g_Ctoc(const Char *, char *, size_t);
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static int g_lstat(Char *, struct __stat64 *, glob_t *);
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static int g_lstat(Char *, struct stat *, glob_t *);
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static DIR *g_opendir(Char *, glob_t *);
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static Char *g_strchr(Char *, wchar_t);
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static const Char *g_strchr(const Char *, wchar_t);
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#ifdef notdef
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static Char *g_strcat(Char *, const Char *);
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#endif
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static int g_stat(Char *, struct __stat64 *, glob_t *);
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static int g_stat(Char *, struct stat *, glob_t *);
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static int glob0(const Char *, glob_t *, size_t *);
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static int glob1(Char *, glob_t *, size_t *);
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static int glob2(Char *, Char *, Char *, Char *, glob_t *, size_t *);
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static int glob3(Char *, Char *, Char *, Char *, Char *, glob_t *, size_t *);
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static int globextend(const Char *, glob_t *, size_t *);
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static const Char *
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static const Char *
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globtilde(const Char *, Char *, size_t, glob_t *);
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static int globexp1(const Char *, glob_t *, size_t *);
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static int globexp2(const Char *, const Char *, glob_t *, int *, size_t *);
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@ -259,7 +268,7 @@ globexp1(const Char *pattern, glob_t *pglob, size_t *limit)
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if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
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return glob0(pattern, pglob, limit);
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while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL)
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while ((ptr = g_strchr(ptr, LBRACE)) != NULL)
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if (!globexp2(ptr, pattern, pglob, &rv, limit))
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return rv;
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@ -387,8 +396,8 @@ globtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob)
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if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
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return pattern;
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/*
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* Copy up to the end of the string or /
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/*
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* Copy up to the end of the string or /
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*/
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eb = &patbuf[patbuf_len - 1];
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for (p = pattern + 1, h = (char *) patbuf;
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@ -403,11 +412,11 @@ globtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob)
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* we're not running setuid or setgid) and then trying
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* the password file
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*/
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if (cygheap->user.issetuid() != 0 ||
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if (issetugid() != 0 ||
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(h = getenv("HOME")) == NULL) {
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if (((h = getlogin()) != NULL &&
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(pwd = getpwnam(h)) != NULL) ||
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(pwd = getpwuid32(getuid32())) != NULL)
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(pwd = getpwuid(getuid())) != NULL)
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h = pwd->pw_dir;
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else
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return pattern;
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@ -448,7 +457,7 @@ glob0(const Char *pattern, glob_t *pglob, size_t *limit)
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const Char *qpatnext;
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int err;
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size_t oldpathc;
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Char c, *bufnext, patbuf[MAXPATHLEN];
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Char *bufnext, c, patbuf[MAXPATHLEN];
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qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob);
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oldpathc = pglob->gl_pathc;
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@ -462,7 +471,7 @@ glob0(const Char *pattern, glob_t *pglob, size_t *limit)
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if (c == NOT)
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++qpatnext;
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if (*qpatnext == EOS ||
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g_strchr((Char *) qpatnext+1, RBRACKET) == NULL) {
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g_strchr(qpatnext+1, RBRACKET) == NULL) {
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*bufnext++ = LBRACKET;
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if (c == NOT)
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--qpatnext;
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@ -556,7 +565,7 @@ static int
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glob2(Char *pathbuf, Char *pathend, Char *pathend_last, Char *pattern,
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glob_t *pglob, size_t *limit)
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{
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struct __stat64 sb;
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struct stat sb;
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Char *p, *q;
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int anymeta;
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@ -625,6 +634,8 @@ glob3(Char *pathbuf, Char *pathend, Char *pathend_last,
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* assigned, below, to two functions which are prototyped in glob.h
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* and dirent.h as taking pointers to differently typed opaque
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* structures.
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* CYGWIN: Needs prototype and subsequently wild casting to avoid
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* compiler error.
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*/
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struct dirent *(*readdirfunc)(void *);
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@ -642,7 +653,7 @@ glob3(Char *pathbuf, Char *pathend, Char *pathend_last,
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pglob->gl_flags & GLOB_ERR)
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return (GLOB_ABORTED);
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}
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return((pglob->gl_flags & GLOB_ERR) ? GLOB_ABORTED : 0);
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return(0);
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}
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err = 0;
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@ -786,41 +797,23 @@ match(Char *name, Char *pat, Char *patend)
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return(0);
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if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS)
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++pat;
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||||
if (ignore_case_with_glob)
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{
|
||||
while (((c = *pat++) & M_MASK) != M_END)
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||||
while (((c = *pat++) & M_MASK) != M_END)
|
||||
if ((*pat & M_MASK) == M_RNG) {
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||||
if (tolower(c) <= tolower(k) && tolower(k) <= tolower(pat[1]))
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ok = 1;
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||||
pat += 2;
|
||||
} else if (tolower(c) == tolower(k))
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||||
ok = 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
while (((c = *pat++) & M_MASK) != M_END)
|
||||
if ((*pat & M_MASK) == M_RNG) {
|
||||
if (c <= k && k <= pat[1])
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||||
ok = 1;
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||||
pat += 2;
|
||||
if (__collate_load_error ?
|
||||
CCHAR(c) <= CCHAR(k) && CCHAR(k) <= CCHAR(pat[1]) :
|
||||
__collate_range_cmp(CCHAR(c), CCHAR(k)) <= 0
|
||||
&& __collate_range_cmp(CCHAR(k), CCHAR(pat[1])) <= 0
|
||||
)
|
||||
ok = 1;
|
||||
pat += 2;
|
||||
} else if (c == k)
|
||||
ok = 1;
|
||||
}
|
||||
ok = 1;
|
||||
if (ok == negate_range)
|
||||
return(0);
|
||||
break;
|
||||
default:
|
||||
if (ignore_case_with_glob)
|
||||
{
|
||||
if (tolower(*name) != tolower(c))
|
||||
return(0);
|
||||
++name;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (*name++ != c)
|
||||
if (Cchar(*name++) != Cchar(c))
|
||||
return(0);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -881,8 +874,18 @@ stat32_to_stat64 (struct __stat32 *src, struct __stat64 *dst)
|
||||
dst->st_blocks = src->st_blocks;
|
||||
}
|
||||
|
||||
#define CYGWIN_gl_stat(sfptr) \
|
||||
({ int ret; \
|
||||
struct __stat32 lsb; \
|
||||
if (CYGWIN_VERSION_CHECK_FOR_USING_BIG_TYPES) \
|
||||
ret = (*pglob->sfptr) (buf, sb); \
|
||||
else if (!(ret = (*pglob->sfptr) (buf, (struct __stat64 *) &lsb))) \
|
||||
stat32_to_stat64 (&lsb, sb); \
|
||||
ret; \
|
||||
})
|
||||
|
||||
static int
|
||||
g_lstat(Char *fn, struct __stat64 *sb, glob_t *pglob)
|
||||
g_lstat(Char *fn, struct stat *sb, glob_t *pglob)
|
||||
{
|
||||
char buf[MAXPATHLEN];
|
||||
|
||||
@ -890,22 +893,13 @@ g_lstat(Char *fn, struct __stat64 *sb, glob_t *pglob)
|
||||
errno = ENAMETOOLONG;
|
||||
return (-1);
|
||||
}
|
||||
if (pglob->gl_flags & GLOB_ALTDIRFUNC) {
|
||||
struct __stat32 lsb;
|
||||
int ret;
|
||||
|
||||
if (CYGWIN_VERSION_CHECK_FOR_USING_BIG_TYPES)
|
||||
ret = (*pglob->gl_lstat)(buf, sb);
|
||||
else if (!(ret = (*pglob->gl_lstat)(buf,
|
||||
(struct __stat64 *)&lsb)))
|
||||
stat32_to_stat64 (&lsb, sb);
|
||||
return ret;
|
||||
}
|
||||
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
|
||||
return CYGWIN_gl_stat (gl_lstat);
|
||||
return(lstat64(buf, sb));
|
||||
}
|
||||
|
||||
static int
|
||||
g_stat(Char *fn, struct __stat64 *sb, glob_t *pglob)
|
||||
g_stat(Char *fn, struct stat *sb, glob_t *pglob)
|
||||
{
|
||||
char buf[MAXPATHLEN];
|
||||
|
||||
@ -913,22 +907,13 @@ g_stat(Char *fn, struct __stat64 *sb, glob_t *pglob)
|
||||
errno = ENAMETOOLONG;
|
||||
return (-1);
|
||||
}
|
||||
if (pglob->gl_flags & GLOB_ALTDIRFUNC) {
|
||||
struct __stat32 lsb;
|
||||
int ret;
|
||||
|
||||
if (CYGWIN_VERSION_CHECK_FOR_USING_BIG_TYPES)
|
||||
ret = (*pglob->gl_stat)(buf, sb);
|
||||
else if (!(ret = (*pglob->gl_stat)(buf,
|
||||
(struct __stat64 *)&lsb)))
|
||||
stat32_to_stat64 (&lsb, sb);
|
||||
return ret;
|
||||
}
|
||||
if (pglob->gl_flags & GLOB_ALTDIRFUNC)
|
||||
return CYGWIN_gl_stat (gl_stat);
|
||||
return(stat64(buf, sb));
|
||||
}
|
||||
|
||||
static Char *
|
||||
g_strchr(Char *str, wchar_t ch)
|
||||
static const Char *
|
||||
g_strchr(const Char *str, wchar_t ch)
|
||||
{
|
||||
|
||||
do {
|
||||
|
||||
@ -527,7 +527,7 @@ thread_wrapper (VOID *arg)
|
||||
xorl %%ebp, %%ebp # Set ebp to 0 \n\
|
||||
# Make gcc 3.x happy and align the stack so that it is \n\
|
||||
# 16 byte aligned right before the final call opcode. \n\
|
||||
andl $-16, %%esp # 16 bit align \n\
|
||||
andl $-16, %%esp # 16 byte align \n\
|
||||
addl $-12, %%esp # 12 bytes + 4 byte arg = 16 \n\
|
||||
# Now we moved to the new stack. Save thread func address\n\
|
||||
# and thread arg on new stack \n\
|
||||
@ -578,11 +578,17 @@ CygwinCreateThread (LPTHREAD_START_ROUTINE thread_func, PVOID thread_arg,
|
||||
}
|
||||
else
|
||||
{
|
||||
char *commitaddr;
|
||||
|
||||
/* If not, we have to create the stack here. */
|
||||
real_stacksize = roundup2 (stacksize, wincap.page_size ());
|
||||
real_guardsize = roundup2 (guardsize, wincap.page_size ());
|
||||
/* Add the guardsize to the stacksize */
|
||||
real_stacksize += real_guardsize;
|
||||
/* If we use the default Windows guardpage method, we have to take
|
||||
the 2 pages dead zone into account. */
|
||||
if (real_guardsize == wincap.page_size ())
|
||||
real_stacksize += 2 * wincap.page_size ();
|
||||
/* Now roundup the result to the next allocation boundary. */
|
||||
real_stacksize = roundup2 (real_stacksize,
|
||||
wincap.allocation_granularity ());
|
||||
@ -596,28 +602,43 @@ CygwinCreateThread (LPTHREAD_START_ROUTINE thread_func, PVOID thread_arg,
|
||||
PAGE_READWRITE);
|
||||
if (!real_stackaddr)
|
||||
return NULL;
|
||||
/* Set up committed region. In contrast to the OS we commit 64K and
|
||||
set up just a single guard page at the end. */
|
||||
char *commitaddr = (char *) real_stackaddr
|
||||
+ real_stacksize
|
||||
- wincap.allocation_granularity ();
|
||||
if (!VirtualAlloc (commitaddr, wincap.page_size (), MEM_COMMIT,
|
||||
PAGE_READWRITE | PAGE_GUARD))
|
||||
goto err;
|
||||
commitaddr += wincap.page_size ();
|
||||
if (!VirtualAlloc (commitaddr, wincap.allocation_granularity ()
|
||||
- wincap.page_size (), MEM_COMMIT,
|
||||
PAGE_READWRITE))
|
||||
goto err;
|
||||
/* If the guardsize is != 0 (which is the default), set up a POSIX
|
||||
guardpage at the end of the stack. This isn't the same as the
|
||||
Windows guardpage, which is used to convert reserved stack to
|
||||
commited stack if necessary. Rather, the POSIX guardpage consists
|
||||
of one or more memory pages with NOACCESS protection. It's supposed
|
||||
to safeguard memory areas beyond the stack against stack overflow. */
|
||||
if (real_guardsize)
|
||||
VirtualAlloc (real_stackaddr, real_guardsize, MEM_COMMIT,
|
||||
PAGE_NOACCESS);
|
||||
/* Set up committed region. Two cases: */
|
||||
if (real_guardsize != wincap.page_size ())
|
||||
{
|
||||
/* If guardsize is set to something other than the page size, we
|
||||
commit the entire stack and, if guardsize is > 0, we set up a
|
||||
POSIX guardpage. We don't set up a Windows guardpage. */
|
||||
if (!VirtualAlloc (real_stackaddr, real_guardsize, MEM_COMMIT,
|
||||
PAGE_NOACCESS))
|
||||
goto err;
|
||||
commitaddr = (char *) real_stackaddr + real_guardsize;
|
||||
if (!VirtualAlloc (commitaddr, real_stacksize - real_guardsize,
|
||||
MEM_COMMIT, PAGE_READWRITE))
|
||||
goto err;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* If guardsize is exactly the page_size, we can assume that the
|
||||
application will behave Windows conformant in terms of stack usage.
|
||||
We can especially assume that it never allocates more than one
|
||||
page at a time (alloca/_chkstk). Therefore, this is the default
|
||||
case which allows a Windows compatible stack setup with a
|
||||
reserved region, a guard page, and a commited region. We don't
|
||||
need to set up a POSIX guardpage since Windows already handles
|
||||
stack overflow: Trying to extend the stack into the last three
|
||||
pages of the stack results in a SEGV.
|
||||
We always commit 64K here, starting with the guardpage. */
|
||||
commitaddr = (char *) real_stackaddr + real_stacksize
|
||||
- wincap.allocation_granularity ();
|
||||
if (!VirtualAlloc (commitaddr, wincap.page_size (), MEM_COMMIT,
|
||||
PAGE_READWRITE | PAGE_GUARD))
|
||||
goto err;
|
||||
commitaddr += wincap.page_size ();
|
||||
if (!VirtualAlloc (commitaddr, wincap.allocation_granularity ()
|
||||
- wincap.page_size (), MEM_COMMIT,
|
||||
PAGE_READWRITE))
|
||||
goto err;
|
||||
}
|
||||
wrapper_arg->stackaddr = (char *) real_stackaddr;
|
||||
wrapper_arg->stackbase = (char *) real_stackaddr + real_stacksize;
|
||||
wrapper_arg->commitaddr = commitaddr;
|
||||
|
||||
@ -1192,6 +1192,15 @@ strcoll (const char *s1, const char *s2)
|
||||
return ret - CSTR_EQUAL;
|
||||
}
|
||||
|
||||
/* BSD. Used in glob.cc and regcomp.c, for instance. */
|
||||
extern "C" int
|
||||
__collate_range_cmp (int c1, int c2)
|
||||
{
|
||||
char s1[2] = { c1, '\0' };
|
||||
char s2[2] = { c2, '\0' };
|
||||
return strcoll (s1, s2);
|
||||
}
|
||||
|
||||
extern "C" size_t
|
||||
wcsxfrm (wchar_t *ws1, const wchar_t *ws2, size_t wsn)
|
||||
{
|
||||
|
||||
@ -55,9 +55,7 @@ __FBSDID("$FreeBSD: src/lib/libc/regex/regcomp.c,v 1.36 2007/06/11 03:05:54 delp
|
||||
#include <wchar.h>
|
||||
#include <wctype.h>
|
||||
|
||||
#ifndef __CYGWIN__
|
||||
#include "collate.h"
|
||||
#endif
|
||||
|
||||
#include "utils.h"
|
||||
#include "regex2.h"
|
||||
@ -771,17 +769,6 @@ p_bracket(struct parse *p)
|
||||
EMIT(OANYOF, (int)(cs - p->g->sets));
|
||||
}
|
||||
|
||||
#ifdef __CYGWIN__
|
||||
/* This function is usually part of FreeBSD's libc. */
|
||||
int
|
||||
__collate_range_cmp(int c1, int c2)
|
||||
{
|
||||
char s1[2] = { c1, '\0' };
|
||||
char s2[2] = { c2, '\0' };
|
||||
return strcoll (s1, s2);
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
- p_b_term - parse one term of a bracketed character list
|
||||
== static void p_b_term(struct parse *p, cset *cs);
|
||||
|
||||
@ -16,10 +16,12 @@ details. */
|
||||
#define WRITE_LOCK 1
|
||||
#define READ_LOCK 2
|
||||
|
||||
/* Default is a 1 Megs stack with a 4K guardpage. Since the pthread stacksize
|
||||
does not include the guardpage size, but we don't want to waste another 64K,
|
||||
subtract the default guardpage size from the stacksize. */
|
||||
#define PTHREAD_DEFAULT_STACKSIZE (1024 * 1024 - wincap.page_size ())
|
||||
/* Default is a 1 Megs stack with a 4K guardpage. The pthread stacksize
|
||||
does not include the guardpage size, so we subtract the default guardpage
|
||||
size. Additionally, the Windows stack handling disallows to use the last
|
||||
two pages as guard page (tested on XP and W7). That results in a zone of
|
||||
three pages which have to be subtract to get the actual stack size. */
|
||||
#define PTHREAD_DEFAULT_STACKSIZE (1024 * 1024 - 3 * wincap.page_size ())
|
||||
#define PTHREAD_DEFAULT_GUARDSIZE (wincap.page_size ())
|
||||
|
||||
#include <pthread.h>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user