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authorcvs2svn <>2003-12-22 00:59:56 +0000
committercvs2svn <>2003-12-22 00:59:56 +0000
commita4637e83f3bb0e88f86bf70dd3af439b37eaa385 (patch)
treeb7fd39fd22de6c5e5f2161b52e3f01143e29aad4 /winsup/cygwin/spawn.cc
parent1fb9256d7e06dd6b0004fb625253464e4aaa6140 (diff)
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This commit was manufactured by cvs2svn to create tag 'csl-arm-2003-q4'.csl-arm-2003-q4
Sprout from master 2003-12-22 00:59:55 UTC DJ Delorie <dj@redhat.com> '* configure.in (*-*-uclinux): Exclude newlib, libgloss and rda.' Cherrypick from cygnus 1999-05-03 07:29:06 UTC Richard Henderson <rth@redhat.com> '19990502 sourceware import': COPYING COPYING.LIB README config/mh-armpic config/mh-elfalphapic config/mh-m68kpic config/mh-papic config/mh-ppcpic config/mh-x86pic 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 etc/configure etc/configure.in include/aout/hp.h include/aout/hppa.h include/coff/sym.h include/coff/symconst.h include/fopen-bin.h include/fopen-same.h include/fopen-vms.h include/gdbm.h include/mpw/ChangeLog include/mpw/README include/mpw/dir.h include/mpw/dirent.h include/mpw/fcntl.h include/mpw/grp.h include/mpw/mpw.h include/mpw/pwd.h include/mpw/stat.h include/mpw/sys/file.h include/mpw/sys/param.h include/mpw/sys/resource.h include/mpw/sys/stat.h include/mpw/sys/time.h include/mpw/sys/types.h include/mpw/utime.h include/mpw/varargs.h include/nlm/ppc-ext.h include/opcode/mn10200.h include/opcode/tahoe.h include/opcode/tic30.h makefile.vms move-if-change mpw-README mpw-build.in mpw-config.in mpw-configure mpw-install setup.com ylwrap Delete: djunpack.bat winsup/CYGWIN_LICENSE winsup/ChangeLog winsup/Makefile.common winsup/Makefile.in winsup/bz2lib/CHANGES winsup/bz2lib/ChangeLog winsup/bz2lib/LICENSE winsup/bz2lib/Makefile winsup/bz2lib/Makefile-libbz2_so winsup/bz2lib/Makefile.in winsup/bz2lib/README winsup/bz2lib/README.COMPILATION.PROBLEMS winsup/bz2lib/Y2K_INFO winsup/bz2lib/aclocal.m4 winsup/bz2lib/blocksort.c winsup/bz2lib/bzip2.1 winsup/bz2lib/bzip2.1.preformatted winsup/bz2lib/bzip2.c winsup/bz2lib/bzip2.txt winsup/bz2lib/bzip2recover.c winsup/bz2lib/bzlib.c winsup/bz2lib/bzlib.h winsup/bz2lib/bzlib_private.h winsup/bz2lib/compress.c winsup/bz2lib/configure winsup/bz2lib/configure.in winsup/bz2lib/crctable.c winsup/bz2lib/decompress.c winsup/bz2lib/dlltest.c 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winsup/w32api/include/tmschema.h winsup/w32api/include/unknwn.h winsup/w32api/include/userenv.h winsup/w32api/include/uxtheme.h winsup/w32api/include/vfw.h winsup/w32api/include/w32api.h winsup/w32api/include/winable.h winsup/w32api/include/winbase.h winsup/w32api/include/winber.h winsup/w32api/include/wincon.h winsup/w32api/include/wincrypt.h winsup/w32api/include/windef.h winsup/w32api/include/windows.h winsup/w32api/include/windowsx.h winsup/w32api/include/winerror.h winsup/w32api/include/wingdi.h winsup/w32api/include/wininet.h winsup/w32api/include/winioctl.h winsup/w32api/include/winldap.h winsup/w32api/include/winnetwk.h winsup/w32api/include/winnls.h winsup/w32api/include/winnt.h winsup/w32api/include/winperf.h winsup/w32api/include/winreg.h winsup/w32api/include/winresrc.h winsup/w32api/include/winsnmp.h winsup/w32api/include/winsock.h winsup/w32api/include/winsock2.h winsup/w32api/include/winspool.h winsup/w32api/include/winsvc.h winsup/w32api/include/winuser.h winsup/w32api/include/winver.h winsup/w32api/include/ws2spi.h winsup/w32api/include/ws2tcpip.h winsup/w32api/include/wsahelp.h winsup/w32api/include/wsipx.h winsup/w32api/include/wsnetbs.h winsup/w32api/include/wtypes.h winsup/w32api/include/zmouse.h winsup/w32api/install-sh winsup/w32api/lib/Makefile.in winsup/w32api/lib/advapi32.def winsup/w32api/lib/avicap32.def winsup/w32api/lib/avifil32.def winsup/w32api/lib/cap.def winsup/w32api/lib/comctl32.def winsup/w32api/lib/comdlg32.def winsup/w32api/lib/crypt32.def winsup/w32api/lib/ctl3d32.def winsup/w32api/lib/d3dim.def winsup/w32api/lib/d3drm.def winsup/w32api/lib/d3dxof.def winsup/w32api/lib/ddk/Makefile.in winsup/w32api/lib/ddk/apcups.def winsup/w32api/lib/ddk/cfgmgr32.def winsup/w32api/lib/ddk/dxapi.def winsup/w32api/lib/ddk/hal.def winsup/w32api/lib/ddk/hid.def winsup/w32api/lib/ddk/hidparse.def winsup/w32api/lib/ddk/mcd.def winsup/w32api/lib/ddk/ndis.def winsup/w32api/lib/ddk/ntoskrnl.def winsup/w32api/lib/ddk/scsiport.def winsup/w32api/lib/ddk/tdi.def winsup/w32api/lib/ddk/usbcamd.def winsup/w32api/lib/ddk/usbcamd2.def winsup/w32api/lib/ddk/videoprt.def winsup/w32api/lib/ddk/win32k.def winsup/w32api/lib/ddraw.def winsup/w32api/lib/dhcpcsvc.def winsup/w32api/lib/dinput.c winsup/w32api/lib/dinput.def winsup/w32api/lib/dlcapi.def winsup/w32api/lib/dplayx.def winsup/w32api/lib/dsetup.def winsup/w32api/lib/dsound.def winsup/w32api/lib/dxguid.c winsup/w32api/lib/faultrep.def winsup/w32api/lib/gdi32.def winsup/w32api/lib/glaux.def winsup/w32api/lib/glu32.def winsup/w32api/lib/glut.def winsup/w32api/lib/glut32.def winsup/w32api/lib/igmpagnt.def winsup/w32api/lib/imagehlp.def winsup/w32api/lib/imm32.def winsup/w32api/lib/iphlpapi.def winsup/w32api/lib/kernel32.c 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/mpr.def winsup/w32api/lib/msacm32.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/nddeapi.def winsup/w32api/lib/netapi32.def winsup/w32api/lib/ntdll.def winsup/w32api/lib/odbc32.def winsup/w32api/lib/odbccp32.def winsup/w32api/lib/ole32.def winsup/w32api/lib/oleacc.def winsup/w32api/lib/oleaut32.def winsup/w32api/lib/olecli32.def winsup/w32api/lib/oledlg.def 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/powrprof.def winsup/w32api/lib/psapi.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/scrnsave.c winsup/w32api/lib/secur32.def 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/url.def winsup/w32api/lib/user32.def winsup/w32api/lib/userenv.def winsup/w32api/lib/uuid.c 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.def winsup/w32api/lib/wsnmp32.def winsup/w32api/lib/wsock32.def winsup/w32api/lib/wst.def
Diffstat (limited to 'winsup/cygwin/spawn.cc')
-rw-r--r--winsup/cygwin/spawn.cc1111
1 files changed, 0 insertions, 1111 deletions
diff --git a/winsup/cygwin/spawn.cc b/winsup/cygwin/spawn.cc
deleted file mode 100644
index 0e288df..0000000
--- a/winsup/cygwin/spawn.cc
+++ /dev/null
@@ -1,1111 +0,0 @@
-/* spawn.cc
-
- Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 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. */
-
-#include "winsup.h"
-#include <stdlib.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <process.h>
-#include <sys/wait.h>
-#include <limits.h>
-#include <wingdi.h>
-#include <winuser.h>
-#include <ctype.h>
-#include "cygerrno.h"
-#include <sys/cygwin.h>
-#include "security.h"
-#include "path.h"
-#include "fhandler.h"
-#include "dtable.h"
-#include "sigproc.h"
-#include "cygheap.h"
-#include "child_info.h"
-#include "shared_info.h"
-#include "pinfo.h"
-#define NEED_VFORK
-#include "perthread.h"
-#include "registry.h"
-#include "environ.h"
-#include "cygthread.h"
-
-#define LINE_BUF_CHUNK (CYG_MAX_PATH * 2)
-
-static suffix_info std_suffixes[] =
-{
- suffix_info (".exe", 1), suffix_info ("", 1),
- suffix_info (".com"), suffix_info (".cmd"),
- suffix_info (".bat"), suffix_info (".dll"),
- suffix_info (NULL)
-};
-
-HANDLE hExeced;
-DWORD dwExeced;
-
-/* Add .exe to PROG if not already present and see if that exists.
- If not, return PROG (converted from posix to win32 rules if necessary).
- The result is always BUF.
-
- Returns (possibly NULL) suffix */
-
-static const char *
-perhaps_suffix (const char *prog, path_conv& buf)
-{
- char *ext;
-
- debug_printf ("prog '%s'", prog);
- buf.check (prog, PC_SYM_FOLLOW | PC_FULL, std_suffixes);
-
- if (!buf.exists () || buf.isdir ())
- ext = NULL;
- else if (buf.known_suffix)
- ext = (char *) buf + (buf.known_suffix - buf.get_win32 ());
- else
- ext = strchr (buf, '\0');
-
- debug_printf ("buf %s, suffix found '%s'", (char *) buf, ext);
- return ext;
-}
-
-/* Find an executable name, possibly by appending known executable
- suffixes to it. The win32-translated name is placed in 'buf'.
- Any found suffix is returned in known_suffix.
-
- If the file is not found and !null_if_not_found then the win32 version
- of name is placed in buf and returned. Otherwise the contents of buf
- is undefined and NULL is returned. */
-
-const char * __stdcall
-find_exec (const char *name, path_conv& buf, const char *mywinenv,
- unsigned opt, const char **known_suffix)
-{
- const char *suffix = "";
- debug_printf ("find_exec (%s)", name);
- const char *retval = buf;
- char tmp[CYG_MAX_PATH];
- const char *posix = (opt & FE_NATIVE) ? NULL : name;
- bool has_slash = strchr (name, '/');
-
- /* Check to see if file can be opened as is first.
- Win32 systems always check . first, but PATH may not be set up to
- do this. */
- if ((has_slash || opt & FE_CWD)
- && (suffix = perhaps_suffix (name, buf)) != NULL)
- {
- if (posix && !has_slash)
- {
- tmp[0] = '.';
- tmp[1] = '/';
- strcpy (tmp + 2, name);
- posix = tmp;
- }
- goto out;
- }
-
- win_env *winpath;
- const char *path;
- const char *posix_path;
-
- /* Return the error condition if this is an absolute path or if there
- is no PATH to search. */
- if (strchr (name, '/') || strchr (name, '\\') ||
- isdrive (name) ||
- !(winpath = getwinenv (mywinenv)) ||
- !(path = winpath->get_native ()) ||
- *path == '\0')
- goto errout;
-
- debug_printf ("%s%s", mywinenv, path);
-
- posix = (opt & FE_NATIVE) ? NULL : tmp;
- posix_path = winpath->get_posix () - 1;
- /* Iterate over the specified path, looking for the file with and
- without executable extensions. */
- do
- {
- posix_path++;
- char *eotmp = strccpy (tmp, &path, ';');
- /* An empty path or '.' means the current directory, but we've
- already tried that. */
- if (opt & FE_CWD && (tmp[0] == '\0' || (tmp[0] == '.' && tmp[1] == '\0')))
- continue;
-
- *eotmp++ = '\\';
- strcpy (eotmp, name);
-
- debug_printf ("trying %s", tmp);
-
- if ((suffix = perhaps_suffix (tmp, buf)) != NULL)
- {
- if (posix == tmp)
- {
- eotmp = strccpy (tmp, &posix_path, ':');
- if (eotmp == tmp)
- *eotmp++ = '.';
- *eotmp++ = '/';
- strcpy (eotmp, name);
- }
- goto out;
- }
- }
- while (*path && *++path && (posix_path = strchr (posix_path, ':')));
-
- errout:
- posix = NULL;
- /* Couldn't find anything in the given path.
- Take the appropriate action based on null_if_not_found. */
- if (opt & FE_NNF)
- retval = NULL;
- else if (opt & FE_NATIVE)
- buf.check (name);
- else
- retval = name;
-
- out:
- if (posix)
- buf.set_path (posix);
- debug_printf ("%s = find_exec (%s)", (char *) buf, name);
- if (known_suffix)
- *known_suffix = suffix ?: strchr (buf, '\0');
- return retval;
-}
-
-/* Utility for spawn_guts. */
-
-static HANDLE
-handle (int n, int direction)
-{
- fhandler_base *fh = cygheap->fdtab[n];
-
- if (!fh)
- return INVALID_HANDLE_VALUE;
- if (fh->get_close_on_exec ())
- return INVALID_HANDLE_VALUE;
- if (direction == 0)
- return fh->get_handle ();
- return fh->get_output_handle ();
-}
-
-int
-iscmd (const char *argv0, const char *what)
-{
- int n;
- n = strlen (argv0) - strlen (what);
- if (n >= 2 && argv0[1] != ':')
- return 0;
- return n >= 0 && strcasematch (argv0 + n, what) &&
- (n == 0 || isdirsep (argv0[n - 1]));
-}
-
-class linebuf
-{
- public:
- size_t ix;
- char *buf;
- size_t alloced;
- linebuf () : ix (0), buf (NULL), alloced (0) {}
- ~linebuf () {if (buf) free (buf);}
- void add (const char *what, int len);
- void add (const char *what) {add (what, strlen (what));}
- void prepend (const char *what, int len);
-};
-
-void
-linebuf::add (const char *what, int len)
-{
- size_t newix;
- if ((newix = ix + len) >= alloced || !buf)
- {
- alloced += LINE_BUF_CHUNK + newix;
- buf = (char *) realloc (buf, alloced + 1);
- }
- memcpy (buf + ix, what, len);
- ix = newix;
- buf[ix] = '\0';
-}
-
-void
-linebuf::prepend (const char *what, int len)
-{
- int buflen;
- size_t newix;
- if ((newix = ix + len) >= alloced)
- {
- alloced += LINE_BUF_CHUNK + newix;
- buf = (char *) realloc (buf, alloced + 1);
- buf[ix] = '\0';
- }
- if ((buflen = strlen (buf)))
- memmove (buf + len, buf, buflen + 1);
- else
- buf[newix] = '\0';
- memcpy (buf, what, len);
- ix = newix;
-}
-
-class av
-{
- char **argv;
- int calloced;
- public:
- int error;
- int argc;
- av (int ac, const char * const *av) : calloced (0), error (false), argc (ac)
- {
- argv = (char **) cmalloc (HEAP_1_ARGV, (argc + 5) * sizeof (char *));
- memcpy (argv, av, (argc + 1) * sizeof (char *));
- }
- ~av ()
- {
- if (argv)
- {
- for (int i = 0; i < calloced; i++)
- if (argv[i])
- cfree (argv[i]);
- cfree (argv);
- }
- }
- int unshift (const char *what, int conv = 0);
- operator char **() {return argv;}
- void all_calloced () {calloced = argc;}
- void replace0_maybe (const char *arg0)
- {
- /* Note: Assumes that argv array has not yet been "unshifted" */
- if (!calloced
- && (argv[0] = cstrdup1 (arg0)))
- calloced = true;
- else
- error = errno;
- }
- void dup_maybe (int i)
- {
- if (i >= calloced
- && !(argv[i] = cstrdup1 (argv[i])))
- error = errno;
- }
- void dup_all ()
- {
- for (int i = calloced; i < argc; i++)
- if (!(argv[i] = cstrdup1 (argv[i])))
- error = errno;
- }
-};
-
-int
-av::unshift (const char *what, int conv)
-{
- char **av;
- av = (char **) crealloc (argv, (argc + 2) * sizeof (char *));
- if (!av)
- return 0;
-
- argv = av;
- memmove (argv + 1, argv, (argc + 1) * sizeof (char *));
- char buf[CYG_MAX_PATH + 1];
- if (conv)
- {
- cygwin_conv_to_posix_path (what, buf);
- char *p = strchr (buf, '\0') - 4;
- if (p > buf && strcasematch (p, ".exe"))
- *p = '\0';
- what = buf;
- }
- if (!(*argv = cstrdup1 (what)))
- error = errno;
- argc++;
- calloced++;
- return 1;
-}
-
-struct pthread_cleanup
-{
- _sig_func_ptr oldint;
- _sig_func_ptr oldquit;
- sigset_t oldmask;
- pthread_cleanup (): oldint (NULL), oldquit (NULL), oldmask (0) {}
-};
-
-static void
-do_cleanup (void *args)
-{
-# define cleanup ((pthread_cleanup *) args)
- if (cleanup->oldint)
- signal (SIGINT, cleanup->oldint);
- if (cleanup->oldquit)
- signal (SIGQUIT, cleanup->oldquit);
- if (cleanup->oldmask)
- sigprocmask (SIG_SETMASK, &(cleanup->oldmask), NULL);
-# undef cleanup
-}
-
-
-static int __stdcall
-spawn_guts (const char * prog_arg, const char *const *argv,
- const char *const envp[], int mode)
-{
- bool rc;
- pid_t cygpid;
-
- MALLOC_CHECK;
-
- if (prog_arg == NULL)
- {
- syscall_printf ("prog_arg is NULL");
- set_errno (EINVAL);
- return -1;
- }
-
- syscall_printf ("spawn_guts (%d, %.9500s)", mode, prog_arg);
-
- if (argv == NULL)
- {
- syscall_printf ("argv is NULL");
- set_errno (EINVAL);
- return -1;
- }
-
- path_conv real_path;
-
- linebuf one_line;
-
- STARTUPINFO si = {0, NULL, NULL, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL};
-
- child_info_spawn ciresrv;
- si.lpReserved2 = (LPBYTE) &ciresrv;
- si.cbReserved2 = sizeof (ciresrv);
-
- DWORD chtype;
- if (mode != _P_OVERLAY)
- chtype = PROC_SPAWN;
- else
- chtype = PROC_EXEC;
-
- HANDLE subproc_ready;
- if (chtype != PROC_EXEC)
- subproc_ready = NULL;
- else
- {
- subproc_ready = CreateEvent (&sec_all, TRUE, FALSE, NULL);
- ProtectHandleINH (subproc_ready);
- }
-
- init_child_info (chtype, &ciresrv, (mode == _P_OVERLAY) ? myself->pid : 1,
- subproc_ready);
- if (!DuplicateHandle (hMainProc, hMainProc, hMainProc, &ciresrv.parent, 0, 1,
- DUPLICATE_SAME_ACCESS))
- {
- system_printf ("couldn't create handle to myself for child, %E");
- return -1;
- }
-
- ciresrv.moreinfo = (cygheap_exec_info *) ccalloc (HEAP_1_EXEC, 1, sizeof (cygheap_exec_info));
- ciresrv.moreinfo->old_title = NULL;
-
- /* CreateProcess takes one long string that is the command line (sigh).
- We need to quote any argument that has whitespace or embedded "'s. */
-
- int ac;
- for (ac = 0; argv[ac]; ac++)
- /* nothing */;
-
- av newargv (ac, argv);
-
- int null_app_name = 0;
- if (ac == 3 && argv[1][0] == '/' && argv[1][1] == 'c' &&
- (iscmd (argv[0], "command.com") || iscmd (argv[0], "cmd.exe")))
- {
- real_path.check (prog_arg);
- one_line.add ("\"");
- if (!real_path.error)
- one_line.add (real_path);
- else
- one_line.add (argv[0]);
- one_line.add ("\"");
- one_line.add (" ");
- one_line.add (argv[1]);
- one_line.add (" ");
- one_line.add (argv[2]);
- strcpy (real_path, argv[0]);
- null_app_name = 1;
- goto skip_arg_parsing;
- }
-
- const char *ext;
- if ((ext = perhaps_suffix (prog_arg, real_path)) == NULL)
- {
- set_errno (ENOENT);
- return -1;
- }
-
- MALLOC_CHECK;
-
- /* If the file name ends in either .exe, .com, .bat, or .cmd we assume
- that it is NOT a script file */
- while (*ext == '\0')
- {
- HANDLE hnd = CreateFile (real_path, GENERIC_READ,
- FILE_SHARE_READ | FILE_SHARE_WRITE,
- &sec_none_nih, OPEN_EXISTING,
- FILE_ATTRIBUTE_NORMAL, 0);
- if (hnd == INVALID_HANDLE_VALUE)
- {
- __seterrno ();
- return -1;
- }
-
- DWORD done;
-
- char buf[2 * CYG_MAX_PATH + 1];
- buf[0] = buf[1] = buf[2] = buf[sizeof (buf) - 1] = '\0';
- if (!ReadFile (hnd, buf, sizeof (buf) - 1, &done, 0))
- {
- CloseHandle (hnd);
- __seterrno ();
- return -1;
- }
-
- CloseHandle (hnd);
-
- if (buf[0] == 'M' && buf[1] == 'Z')
- break;
-
- debug_printf ("%s is a script", (char *) real_path);
-
- char *pgm, *arg1;
-
- if (buf[0] != '#' || buf[1] != '!')
- {
- pgm = (char *) "/bin/sh";
- arg1 = NULL;
- }
- else
- {
- char *ptr;
- pgm = buf + 2;
- pgm += strspn (pgm, " \t");
- for (ptr = pgm, arg1 = NULL;
- *ptr && *ptr != '\r' && *ptr != '\n';
- ptr++)
- if (!arg1 && (*ptr == ' ' || *ptr == '\t'))
- {
- /* Null terminate the initial command and step over
- any additional white space. If we've hit the
- end of the line, exit the loop. Otherwise, we've
- found the first argument. Position the current
- pointer on the last known white space. */
- *ptr = '\0';
- char *newptr = ptr + 1;
- newptr += strspn (newptr, " \t");
- if (!*newptr || *newptr == '\r' || *newptr == '\n')
- break;
- arg1 = newptr;
- ptr = newptr - 1;
- }
-
- *ptr = '\0';
- }
-
- /* Replace argv[0] with the full path to the script if this is the
- first time through the loop. */
- newargv.replace0_maybe (prog_arg);
-
- /* pointers:
- * pgm interpreter name
- * arg1 optional string
- */
- if (arg1)
- newargv.unshift (arg1);
-
- /* FIXME: This should not be using FE_NATIVE. It should be putting
- the posix path on the argv list. */
- find_exec (pgm, real_path, "PATH=", FE_NATIVE, &ext);
- newargv.unshift (real_path, 1);
- }
-
- if (real_path.iscygexec ())
- newargv.dup_all ();
- else
- {
- for (int i = 0; i < newargv.argc; i++)
- {
- char *p = NULL;
- const char *a;
-
- newargv.dup_maybe (i);
- a = i ? newargv[i] : (char *) real_path;
- int len = strlen (a);
- if (len != 0 && !strpbrk (a, " \t\n\r\""))
- one_line.add (a, len);
- else
- {
- one_line.add ("\"", 1);
- /* Handle embedded special characters " and \.
- A " is always preceded by a \.
- A \ is not special unless it precedes a ". If it does,
- then all preceding \'s must be doubled to avoid having
- the Windows command line parser interpret the \ as quoting
- the ". This rule applies to a string of \'s before the end
- of the string, since cygwin/windows uses a " to delimit the
- argument. */
- for (; (p = strpbrk (a, "\"\\")); a = ++p)
- {
- one_line.add (a, p - a);
- /* Find length of string of backslashes */
- int n = strspn (p, "\\");
- if (!n)
- one_line.add ("\\\"", 2); /* No backslashes, so it must be a ".
- The " has to be protected with a backslash. */
- else
- {
- one_line.add (p, n); /* Add the run of backslashes */
- /* Need to double up all of the preceding
- backslashes if they precede a quote or EOS. */
- if (!p[n] || p[n] == '"')
- one_line.add (p, n);
- p += n - 1; /* Point to last backslash */
- }
- }
- if (*a)
- one_line.add (a);
- one_line.add ("\"", 1);
- }
- MALLOC_CHECK;
- one_line.add (" ", 1);
- MALLOC_CHECK;
- }
-
- MALLOC_CHECK;
- if (one_line.ix)
- one_line.buf[one_line.ix - 1] = '\0';
- else
- one_line.add ("", 1);
- MALLOC_CHECK;
-
- if (one_line.ix > 32767)
- {
- debug_printf ("Command line too long (>32K), return E2BIG");
- set_errno (E2BIG);
- return -1;
- }
- }
-
- char *envblock;
- newargv.all_calloced ();
- if (newargv.error)
- {
- set_errno (newargv.error);
- return -1;
- }
-
- ciresrv.moreinfo->argc = newargv.argc;
- ciresrv.moreinfo->argv = newargv;
- ciresrv.hexec_proc = hexec_proc;
-
- if (mode != _P_OVERLAY ||
- !DuplicateHandle (hMainProc, myself.shared_handle (), hMainProc,
- &ciresrv.moreinfo->myself_pinfo, 0,
- TRUE, DUPLICATE_SAME_ACCESS))
- ciresrv.moreinfo->myself_pinfo = NULL;
-
- skip_arg_parsing:
- PROCESS_INFORMATION pi = {NULL, 0, 0, 0};
- si.lpReserved = NULL;
- si.lpDesktop = NULL;
- si.dwFlags = STARTF_USESTDHANDLES;
- si.hStdInput = handle (0, 0); /* Get input handle */
- si.hStdOutput = handle (1, 1); /* Get output handle */
- si.hStdError = handle (2, 1); /* Get output handle */
- si.cb = sizeof (si);
-
- int flags = CREATE_DEFAULT_ERROR_MODE | GetPriorityClass (hMainProc);
-
- if (mode == _P_DETACH || !set_console_state_for_spawn ())
- flags |= DETACHED_PROCESS;
- if (mode != _P_OVERLAY)
- flags |= CREATE_SUSPENDED;
-
- /* Some file types (currently only sockets) need extra effort in the
- parent after CreateProcess and before copying the datastructures
- to the child. So we have to start the child in suspend state,
- unfortunately, to avoid a race condition. */
- if (cygheap->fdtab.need_fixup_before ())
- flags |= CREATE_SUSPENDED;
-
-
- const char *runpath = null_app_name ? NULL : (const char *) real_path;
-
- syscall_printf ("null_app_name %d (%s, %.9500s)", null_app_name, runpath, one_line.buf);
-
- void *newheap;
- /* Preallocated buffer for `sec_user' call */
- char sa_buf[1024];
-
- cygbench ("spawn-guts");
-
- cygheap->fdtab.set_file_pointers_for_exec ();
- cygheap->user.deimpersonate ();
- /* When ruid != euid we create the new process under the current original
- account and impersonate in child, this way maintaining the different
- effective vs. real ids.
- FIXME: If ruid != euid and ruid != saved_uid we currently give
- up on ruid. The new process will have ruid == euid. */
- if (!cygheap->user.issetuid ()
- || (cygheap->user.saved_uid == cygheap->user.real_uid
- && cygheap->user.saved_gid == cygheap->user.real_gid
- && !cygheap->user.groups.issetgroups ()))
- {
- PSECURITY_ATTRIBUTES sec_attribs = sec_user_nih (sa_buf);
- ciresrv.moreinfo->envp = build_env (envp, envblock, ciresrv.moreinfo->envc,
- real_path.iscygexec ());
- newheap = cygheap_setup_for_child (&ciresrv, cygheap->fdtab.need_fixup_before ());
- rc = CreateProcess (runpath, /* image name - with full path */
- one_line.buf, /* what was passed to exec */
- sec_attribs, /* process security attrs */
- sec_attribs, /* thread security attrs */
- TRUE, /* inherit handles from parent */
- flags,
- envblock, /* environment */
- 0, /* use current drive/directory */
- &si,
- &pi);
- }
- else
- {
- PSID sid = cygheap->user.sid ();
- /* Give access to myself */
- if (mode == _P_OVERLAY)
- myself.set_acl();
-
- /* Set security attributes with sid */
- PSECURITY_ATTRIBUTES sec_attribs = sec_user_nih (sa_buf, sid);
-
- /* allow the child to interact with our window station/desktop */
- HANDLE hwst, hdsk;
- SECURITY_INFORMATION dsi = DACL_SECURITY_INFORMATION;
- DWORD n;
- char wstname[1024];
- char dskname[1024];
-
- hwst = GetProcessWindowStation ();
- SetUserObjectSecurity (hwst, &dsi, get_null_sd ());
- GetUserObjectInformation (hwst, UOI_NAME, wstname, 1024, &n);
- hdsk = GetThreadDesktop (GetCurrentThreadId ());
- SetUserObjectSecurity (hdsk, &dsi, get_null_sd ());
- GetUserObjectInformation (hdsk, UOI_NAME, dskname, 1024, &n);
- strcat (wstname, "\\");
- strcat (wstname, dskname);
- si.lpDesktop = wstname;
-
- ciresrv.moreinfo->envp = build_env (envp, envblock, ciresrv.moreinfo->envc,
- real_path.iscygexec ());
- newheap = cygheap_setup_for_child (&ciresrv, cygheap->fdtab.need_fixup_before ());
- rc = CreateProcessAsUser (cygheap->user.token (),
- runpath, /* image name - with full path */
- one_line.buf, /* what was passed to exec */
- sec_attribs, /* process security attrs */
- sec_attribs, /* thread security attrs */
- TRUE, /* inherit handles from parent */
- flags,
- envblock, /* environment */
- 0, /* use current drive/directory */
- &si,
- &pi);
- }
-
- /* Restore impersonation. In case of _P_OVERLAY this isn't
- allowed since it would overwrite child data. */
- if (mode != _P_OVERLAY || !rc)
- cygheap->user.reimpersonate ();
-
- MALLOC_CHECK;
- if (envblock)
- free (envblock);
- MALLOC_CHECK;
-
- /* Set errno now so that debugging messages from it appear before our
- final debugging message [this is a general rule for debugging
- messages]. */
- if (!rc)
- {
- __seterrno ();
- syscall_printf ("CreateProcess failed, %E");
- if (subproc_ready)
- ForceCloseHandle (subproc_ready);
- cygheap_setup_for_child_cleanup (newheap, &ciresrv, 0);
- return -1;
- }
-
- /* FIXME: There is a small race here */
-
- int res;
- pthread_cleanup cleanup;
- pthread_cleanup_push (do_cleanup, (void *) &cleanup);
- if (mode == _P_SYSTEM)
- {
- sigset_t child_block;
- cleanup.oldint = signal (SIGINT, SIG_IGN);
- cleanup.oldquit = signal (SIGQUIT, SIG_IGN);
- sigemptyset (&child_block);
- sigaddset (&child_block, SIGCHLD);
- (void) sigprocmask (SIG_BLOCK, &child_block, &cleanup.oldmask);
- }
-
- /* Fixup the parent datastructure if needed and resume the child's
- main thread. */
- if (!cygheap->fdtab.need_fixup_before ())
- cygheap_setup_for_child_cleanup (newheap, &ciresrv, 0);
- else
- {
- cygheap->fdtab.fixup_before_exec (pi.dwProcessId);
- cygheap_setup_for_child_cleanup (newheap, &ciresrv, 1);
- if (mode == _P_OVERLAY)
- {
- ResumeThread (pi.hThread);
- cygthread::terminate ();
- }
- }
-
- if (mode != _P_OVERLAY)
- cygpid = cygwin_pid (pi.dwProcessId);
- else
- cygpid = myself->pid;
-
- /* We print the original program name here so the user can see that too. */
- syscall_printf ("%d = spawn_guts (%s, %.9500s)",
- rc ? cygpid : (unsigned int) -1, prog_arg, one_line.buf);
-
- /* Name the handle similarly to proc_subproc. */
- ProtectHandle1 (pi.hProcess, childhProc);
-
- if (mode == _P_OVERLAY)
- {
- /* These are both duplicated in the child code. We do this here,
- primarily for strace. */
- strace.execing = 1;
- hExeced = pi.hProcess;
- dwExeced = pi.dwProcessId;
- strcpy (myself->progname, real_path);
- close_all_files ();
- }
- else
- {
- myself->set_has_pgid_children ();
- ProtectHandle (pi.hThread);
- pinfo child (cygpid, PID_IN_USE);
- if (!child)
- {
- syscall_printf ("pinfo failed");
- if (get_errno () != ENOMEM)
- set_errno (EAGAIN);
- res = -1;
- goto out;
- }
- child->dwProcessId = pi.dwProcessId;
- child->hProcess = pi.hProcess;
- if (!child.remember ())
- {
- syscall_printf ("process table full");
- set_errno (EAGAIN);
- res = -1;
- goto out;
- }
-
- strcpy (child->progname, real_path);
- /* FIXME: This introduces an unreferenced, open handle into the child.
- The purpose is to keep the pid shared memory open so that all of
- the fields filled out by child.remember do not disappear and so there
- is not a brief period during which the pid is not available.
- However, we should try to find another way to do this eventually. */
- (void) DuplicateHandle (hMainProc, child.shared_handle (), pi.hProcess,
- NULL, 0, 0, DUPLICATE_SAME_ACCESS);
- /* Start the child running */
- ResumeThread (pi.hThread);
- }
-
- ForceCloseHandle (pi.hThread);
-
- sigproc_printf ("spawned windows pid %d", pi.dwProcessId);
-
- bool exited;
-
- res = 0;
- exited = false;
- MALLOC_CHECK;
- if (mode == _P_OVERLAY)
- {
- int nwait = 3;
- HANDLE waitbuf[3] = {pi.hProcess, signal_arrived, subproc_ready};
- for (int i = 0; i < 100; i++)
- {
- switch (WaitForMultipleObjects (nwait, waitbuf, FALSE, INFINITE))
- {
- case WAIT_OBJECT_0:
- sigproc_printf ("subprocess exited");
- DWORD exitcode;
- if (!GetExitCodeProcess (pi.hProcess, &exitcode))
- exitcode = 1;
- res |= exitcode;
- exited = true;
- break;
- case WAIT_OBJECT_0 + 1:
- sigproc_printf ("signal arrived");
- reset_signal_arrived ();
- continue;
- case WAIT_OBJECT_0 + 2:
- if (my_parent_is_alive ())
- res |= EXIT_REPARENTING;
- else if (!myself->ppid_handle)
- {
- nwait = 2;
- sigproc_terminate ();
- continue;
- }
- break;
- case WAIT_FAILED:
- system_printf ("wait failed: nwait %d, pid %d, winpid %d, %E",
- nwait, myself->pid, myself->dwProcessId);
- system_printf ("waitbuf[0] %p %d", waitbuf[0],
- WaitForSingleObject (waitbuf[0], 0));
- system_printf ("waitbuf[1] %p = %d", waitbuf[1],
- WaitForSingleObject (waitbuf[1], 0));
- system_printf ("waitbuf[w] %p = %d", waitbuf[2],
- WaitForSingleObject (waitbuf[2], 0));
- set_errno (ECHILD);
- try_to_debug ();
- return -1;
- }
- break;
- }
-
- ForceCloseHandle (subproc_ready);
-
- sigproc_printf ("res = %x", res);
-
- if (res & EXIT_REPARENTING)
- {
- /* Try to reparent child process.
- * Make handles to child available to parent process and exit with
- * EXIT_REPARENTING status. Wait() syscall in parent will then wait
- * for newly created child.
- */
- HANDLE oldh = myself->hProcess;
- HANDLE h = myself->ppid_handle;
- sigproc_printf ("parent handle %p", h);
- int rc = DuplicateHandle (hMainProc, pi.hProcess, h, &myself->hProcess,
- 0, FALSE, DUPLICATE_SAME_ACCESS);
- sigproc_printf ("%d = DuplicateHandle, oldh %p, newh %p",
- rc, oldh, myself->hProcess);
- if (!rc && my_parent_is_alive ())
- {
- system_printf ("Reparent failed, parent handle %p, %E", h);
- system_printf ("my dwProcessId %d, myself->dwProcessId %d",
- GetCurrentProcessId (), myself->dwProcessId);
- system_printf ("old hProcess %p, hProcess %p", oldh, myself->hProcess);
- }
- }
-
- }
-
- MALLOC_CHECK;
-
- switch (mode)
- {
- case _P_OVERLAY:
- ForceCloseHandle1 (pi.hProcess, childhProc);
- proc_terminate ();
- myself->exit (res, 1);
- break;
- case _P_WAIT:
- case _P_SYSTEM:
- waitpid (cygpid, (int *) &res, 0);
- break;
- case _P_DETACH:
- res = 0; /* Lose all memory of this child. */
- break;
- case _P_NOWAIT:
- case _P_NOWAITO:
- case _P_VFORK:
- res = cygpid;
- break;
- default:
- break;
- }
-
-out:
- pthread_cleanup_pop (1);
- return (int) res;
-}
-
-extern "C" int
-cwait (int *result, int pid, int)
-{
- return waitpid (pid, result, 0);
-}
-
-/*
- * Helper function for spawn runtime calls.
- * Doesn't search the path.
- */
-
-extern "C" int
-spawnve (int mode, const char *path, const char *const *argv,
- const char *const *envp)
-{
- int ret;
- vfork_save *vf = vfork_storage.val ();
-
- if (vf != NULL && (vf->pid < 0) && mode == _P_OVERLAY)
- mode = _P_NOWAIT;
- else
- vf = NULL;
-
- syscall_printf ("spawnve (%s, %s, %x)", path, argv[0], envp);
-
- switch (mode)
- {
- case _P_OVERLAY:
- /* We do not pass _P_SEARCH_PATH here. execve doesn't search PATH.*/
- /* Just act as an exec if _P_OVERLAY set. */
- spawn_guts (path, argv, envp, mode);
- /* Errno should be set by spawn_guts. */
- ret = -1;
- break;
- case _P_VFORK:
- case _P_NOWAIT:
- case _P_NOWAITO:
- case _P_WAIT:
- case _P_DETACH:
- case _P_SYSTEM:
- subproc_init ();
- ret = spawn_guts (path, argv, envp, mode);
- if (vf)
- {
- if (ret > 0)
- {
- debug_printf ("longjmping due to vfork");
- vf->restore_pid (ret);
- }
- }
- break;
- default:
- set_errno (EINVAL);
- ret = -1;
- break;
- }
- return ret;
-}
-
-/*
- * spawn functions as implemented in the MS runtime library.
- * Most of these based on (and copied from) newlib/libc/posix/execXX.c
- */
-
-extern "C" int
-spawnl (int mode, const char *path, const char *arg0, ...)
-{
- int i;
- va_list args;
- const char *argv[256];
-
- va_start (args, arg0);
- argv[0] = arg0;
- i = 1;
-
- do
- argv[i] = va_arg (args, const char *);
- while (argv[i++] != NULL);
-
- va_end (args);
-
- return spawnve (mode, path, (char * const *) argv, cur_environ ());
-}
-
-extern "C" int
-spawnle (int mode, const char *path, const char *arg0, ...)
-{
- int i;
- va_list args;
- const char * const *envp;
- const char *argv[256];
-
- va_start (args, arg0);
- argv[0] = arg0;
- i = 1;
-
- do
- argv[i] = va_arg (args, const char *);
- while (argv[i++] != NULL);
-
- envp = va_arg (args, const char * const *);
- va_end (args);
-
- return spawnve (mode, path, (char * const *) argv, (char * const *) envp);
-}
-
-extern "C" int
-spawnlp (int mode, const char *path, const char *arg0, ...)
-{
- int i;
- va_list args;
- const char *argv[256];
-
- va_start (args, arg0);
- argv[0] = arg0;
- i = 1;
-
- do
- argv[i] = va_arg (args, const char *);
- while (argv[i++] != NULL);
-
- va_end (args);
-
- return spawnvpe (mode, path, (char * const *) argv, cur_environ ());
-}
-
-extern "C" int
-spawnlpe (int mode, const char *path, const char *arg0, ...)
-{
- int i;
- va_list args;
- const char * const *envp;
- const char *argv[256];
-
- va_start (args, arg0);
- argv[0] = arg0;
- i = 1;
-
- do
- argv[i] = va_arg (args, const char *);
- while (argv[i++] != NULL);
-
- envp = va_arg (args, const char * const *);
- va_end (args);
-
- return spawnvpe (mode, path, (char * const *) argv, envp);
-}
-
-extern "C" int
-spawnv (int mode, const char *path, const char * const *argv)
-{
- return spawnve (mode, path, argv, cur_environ ());
-}
-
-extern "C" int
-spawnvp (int mode, const char *path, const char * const *argv)
-{
- return spawnvpe (mode, path, argv, cur_environ ());
-}
-
-extern "C" int
-spawnvpe (int mode, const char *file, const char * const *argv,
- const char * const *envp)
-{
- path_conv buf;
- return spawnve (mode, find_exec (file, buf), argv, envp);
-}
generated by cgit v1.1 at 2024-11-15 00:55:54 +0000