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Diffstat (limited to 'common/exechelp-w32ce.c')
| -rw-r--r-- | common/exechelp-w32ce.c | 886 |
1 files changed, 886 insertions, 0 deletions
diff --git a/common/exechelp-w32ce.c b/common/exechelp-w32ce.c new file mode 100644 index 0000000..ec9f014 --- /dev/null +++ b/common/exechelp-w32ce.c @@ -0,0 +1,886 @@ +/* exechelp-w32.c - Fork and exec helpers for W32CE. + * Copyright (C) 2004, 2007, 2008, 2009, + * 2010 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * This file is free software; you can redistribute it and/or modify + * it under the terms of either + * + * - the GNU Lesser General Public License as published by the Free + * Software Foundation; either version 3 of the License, or (at + * your option) any later version. + * + * or + * + * - the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at + * your option) any later version. + * + * or both in parallel, as here. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses/>. + */ + +#include <config.h> + +#if !defined(HAVE_W32_SYSTEM) && !defined (HAVE_W32CE_SYSTEM) +#error This code is only used on W32CE. +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <assert.h> +#ifdef HAVE_SIGNAL_H +# include <signal.h> +#endif +#include <unistd.h> +#include <fcntl.h> + +#ifdef WITHOUT_NPTH /* Give the Makefile a chance to build without Pth. */ +#undef HAVE_NPTH +#undef USE_NPTH +#endif + +#ifdef HAVE_NPTH +#include <npth.h> +#endif + +#ifdef HAVE_STAT +# include <sys/stat.h> +#endif + +#include <assuan.h> + +#include "util.h" +#include "i18n.h" +#include "sysutils.h" +#include "exechelp.h" + + +/* It seems Vista doesn't grok X_OK and so fails access() tests. + Previous versions interpreted X_OK as F_OK anyway, so we'll just + use F_OK directly. */ +#undef X_OK +#define X_OK F_OK + + +/* We assume that a HANDLE can be represented by an int which should + be true for all i386 systems (HANDLE is defined as void *) and + these are the only systems for which Windows is available. Further + we assume that -1 denotes an invalid handle. */ +#define fd_to_handle(a) ((HANDLE)(a)) +#define handle_to_fd(a) ((int)(a)) +#define pid_to_handle(a) ((HANDLE)(a)) +#define handle_to_pid(a) ((int)(a)) + + +#ifdef USE_NPTH +/* The data passed to the feeder_thread. */ +struct feeder_thread_parms +{ + estream_t stream; + volatile int stream_valid; + HANDLE hd; + int direction; +}; + + +/* The thread started by start_feede3. */ +static void * +feeder_thread (void *arg) +{ + struct feeder_thread_parms *parm = arg; + char buffer[4096]; + int rc; + + if (parm->direction) + { + size_t nread = 0; + DWORD nwritten; + + log_debug ("feeder_thread estream->pipe: stream=%p pipe=%p\n", + parm->stream, parm->hd); + while (parm->stream_valid + && !es_read (parm->stream, buffer, sizeof buffer, &nread)) + { + do + { + pth_enter (); + rc = WriteFile (parm->hd, buffer, nread, &nwritten, NULL); + pth_leave (); + if (!rc) + { + log_debug ("feeder(%p): WriteFile error: rc=%d\n", + parm->hd, (int)GetLastError ()); + goto leave; + } + nread -= nwritten; + } + while (nread); + } + if (!parm->stream_valid) + log_debug ("feeder(%p): closed by other thread\n", parm->hd); + else if (nread) + log_debug ("feeder(%p): es_read error: %s\n", + parm->hd, strerror (errno)); + } + else + { + DWORD nread = 0; + size_t nwritten; + + log_debug ("feeder_thread pipe->estream: stream=%p pipe=%p\n", + parm->stream, parm->hd); + while ( (pth_enter (), + (rc = ReadFile (parm->hd, buffer, sizeof buffer, &nread, NULL)), + pth_leave (), + rc) && nread) + { + log_debug ("feeder_thread pipe->estream: read %d bytes\n", + (int)nread); + do + { + if (parm->stream_valid + && es_write (parm->stream, buffer, nread, &nwritten)) + { + log_debug ("feeder(%p): es_write error: %s\n", + parm->hd, strerror (errno)); + goto leave; + } + log_debug ("feeder_thread pipe->estream: es_wrote %d bytes\n", + (int)nwritten); + nread -= nwritten; + } + while (nread && parm->stream_valid); + } + if (!parm->stream_valid) + log_debug ("feeder(%p): closed by other thread\n", parm->hd); + else if (nread) + log_debug ("feeder(%p): ReadFile error: rc=%d\n", + parm->hd, (int)GetLastError ()); + else + log_debug ("feeder(%p): eof\n", parm->hd); + } + +leave: + log_debug ("feeder(%p): waiting for es_fclose\n", parm->hd); + while (parm->stream_valid) + pth_yield (NULL); + log_debug ("feeder(%p): about to close the pipe handle\n", parm->hd); + CloseHandle (parm->hd); + log_debug ("feeder(%p): pipe handle closed\n", parm->hd); + xfree (parm); + return NULL; +} +#endif /*USE_NPTH*/ + +#ifdef USE_NPTH +static void +feeder_onclose_notification (estream_t stream, void *opaque) +{ + struct feeder_thread_parms *parm = opaque; + (void)stream; + log_debug ("feeder(%p): received onclose note\n", parm->hd); + parm->stream_valid = 0; +} +#endif /*USE_NPTH*/ + +/* Fire up a thread to copy data between STREAM and a pipe's + descriptor FD. With DIRECTION set to true the copy takes place + from the stream to the pipe, otherwise from the pipe to the + stream. */ +static gpg_error_t +start_feeder (estream_t stream, HANDLE hd, int direction) +{ +#ifdef USE_NPTH + gpg_error_t err; + struct feeder_thread_parms *parm; + pth_attr_t tattr; + + parm = xtrymalloc (sizeof *parm); + if (!parm) + return gpg_error_from_syserror (); + parm->stream = stream; + parm->stream_valid = 1; + parm->hd = hd; + parm->direction = direction; + + if (es_onclose (stream, 1, feeder_onclose_notification, parm)) + { + err = gpg_error_from_syserror (); + xfree (parm); + return err; + } + + tattr = pth_attr_new (); + pth_attr_set (tattr, PTH_ATTR_JOINABLE, 0); + pth_attr_set (tattr, PTH_ATTR_STACK_SIZE, 64*1024); + pth_attr_set (tattr, PTH_ATTR_NAME, "exec-feeder"); + + log_debug ("spawning new feeder(%p, %p, %d)\n", stream, hd, direction); + if(!pth_spawn (tattr, feeder_thread, parm)) + { + err = gpg_error_from_syserror (); + es_onclose (stream, 0, feeder_onclose_notification, parm); + xfree (parm); + } + else + err = 0; + pth_attr_destroy (tattr); + + return err; +#else + (void)stream; + (void)hd; + (void)direction; + return gpg_error (GPG_ERR_NOT_IMPLEMENTED); /* No Pth. */ +#endif +} + + + +/* Return the maximum number of currently allowed open file + descriptors. Only useful on POSIX systems but returns a value on + other systems too. */ +int +get_max_fds (void) +{ + int max_fds = -1; + +#ifdef OPEN_MAX + if (max_fds == -1) + max_fds = OPEN_MAX; +#endif + + if (max_fds == -1) + max_fds = 256; /* Arbitrary limit. */ + + return max_fds; +} + + +/* Under Windows this is a dummy function. */ +void +close_all_fds (int first, int *except) +{ + (void)first; + (void)except; +} + + +/* Returns an array with all currently open file descriptors. The end + of the array is marked by -1. The caller needs to release this + array using the *standard free* and not with xfree. This allow the + use of this function right at startup even before libgcrypt has + been initialized. Returns NULL on error and sets ERRNO + accordingly. */ +int * +get_all_open_fds (void) +{ + int *array; + size_t narray; + int fd, max_fd, idx; +#ifndef HAVE_STAT + array = calloc (1, sizeof *array); + if (array) + array[0] = -1; +#else /*HAVE_STAT*/ + struct stat statbuf; + + max_fd = get_max_fds (); + narray = 32; /* If you change this change also t-exechelp.c. */ + array = calloc (narray, sizeof *array); + if (!array) + return NULL; + + /* Note: The list we return is ordered. */ + for (idx=0, fd=0; fd < max_fd; fd++) + if (!(fstat (fd, &statbuf) == -1 && errno == EBADF)) + { + if (idx+1 >= narray) + { + int *tmp; + + narray += (narray < 256)? 32:256; + tmp = realloc (array, narray * sizeof *array); + if (!tmp) + { + free (array); + return NULL; + } + array = tmp; + } + array[idx++] = fd; + } + array[idx] = -1; +#endif /*HAVE_STAT*/ + return array; +} + + + +static char * +copy_quoted (char *p, const char *string) +{ + const char *s; + + if (!*string) /* Empty string. */ + p = stpcpy (p, "\"\""); + else if (strpbrk (string, " \t\n\v\f\"")) /* Need quotes. */ + { + p = stpcpy (p, "\""); + for (s = string; *s; s++) + { + *p++ = *s; + if (*s == '\"') + *p++ = *s; + } + *p++ = '\"'; + *p = 0; + } + else /* Copy verbatim. */ + p = stpcpy (p, string); + + return p; +} + + +/* Build a command line for use with W32's CreateProcess. On success + CMDLINE gets the address of a newly allocated string. */ +static int +build_w32_commandline (const char * const *argv, + int rvid0, int rvid1, int rvid2, + char **cmdline) +{ + int i, n; + const char *s; + char *buf, *p; + char fdbuf[3*30]; + + p = fdbuf; + *p = 0; + + if (rvid0) + snprintf (p, 25, "-&S0=%d ", rvid0); + else + strcpy (p, "-&S0=null "); + p += strlen (p); + + if (rvid1) + snprintf (p, 25, "-&S1=%d ", rvid1); + else + strcpy (p, "-&S1=null "); + p += strlen (p); + + if (rvid2) + snprintf (p, 25, "-&S2=%d ", rvid2); + else + strcpy (p, "-&S2=null "); + p += strlen (p); + + *cmdline = NULL; + n = strlen (fdbuf); + for (i=0; (s = argv[i]); i++) + { + n += strlen (s) + 1 + 2; /* (1 space, 2 quoting) */ + for (; *s; s++) + if (*s == '\"') + n++; /* Need to double inner quotes. */ + } + n++; + + buf = p = xtrymalloc (n); + if (! buf) + return -1; + + p = stpcpy (p, fdbuf); + for (i = 0; argv[i]; i++) + { + *p++ = ' '; + p = copy_quoted (p, argv[i]); + } + + *cmdline = buf; + return 0; +} + + +/* Create pipe where one end is inheritable: With an INHERIT_IDX of 0 + the read end is inheritable, with 1 the write end is inheritable. + Note that the inheritable ends are rendezvous ids and no file + descriptors or handles. */ +static gpg_error_t +create_inheritable_pipe (int filedes[2], int inherit_idx) +{ + HANDLE hd; + int rvid; + + filedes[0] = filedes[1] = -1; + hd = _assuan_w32ce_prepare_pipe (&rvid, !inherit_idx); + if (hd == INVALID_HANDLE_VALUE) + { + log_error ("_assuan_w32ce_prepare_pipe failed: %s\n", w32_strerror (-1)); + gpg_err_set_errno (EIO); + return gpg_error_from_syserror (); + } + + if (inherit_idx) + { + filedes[0] = handle_to_fd (hd); + filedes[1] = rvid; + } + else + { + filedes[0] = rvid; + filedes[1] = handle_to_fd (hd); + } + return 0; +} + + +/* Portable function to create a pipe. Under Windows the write end is + inheritable (i.e. an rendezvous id). */ +gpg_error_t +gnupg_create_inbound_pipe (int filedes[2], estream_t *r_fp, int nonblock) +{ + if (r_fp) + return gpg_error (GPG_ERR_NOT_IMPLEMENTED); + else + return create_inheritable_pipe (filedes, 1); +} + + +/* Portable function to create a pipe. Under Windows the read end is + inheritable (i.e. an rendezvous id). */ +gpg_error_t +gnupg_create_outbound_pipe (int filedes[2], estream_t *r_fp, int nonblock) +{ + if (r_fp) + return gpg_error (GPG_ERR_NOT_IMPLEMENTED); + else + return create_inheritable_pipe (filedes, 0); +} + + +/* Portable function to create a pipe. Under Windows both ends are + inheritable. */ +gpg_error_t +gnupg_create_pipe (int filedes[2]) +{ + return gpg_error (GPG_ERR_NOT_IMPLEMENTED); +} + + +static int +create_process (const char *pgmname, const char *cmdline, + PROCESS_INFORMATION *pi) +{ + int res; + wchar_t *wpgmname, *wcmdline; + + wpgmname = utf8_to_wchar (pgmname); + if (!wpgmname) + return 0; + wcmdline = utf8_to_wchar (cmdline); + if (!wcmdline) + { + xfree (wpgmname); + return 0; + } + res = CreateProcess (wpgmname, /* Program to start. */ + wcmdline, /* Command line arguments. */ + NULL, /* Process security attributes. */ + NULL, /* Thread security attributes. */ + FALSE, /* Inherit handles. */ + CREATE_SUSPENDED, /* Creation flags. */ + NULL, /* Environment. */ + NULL, /* Use current drive/directory. */ + NULL, /* Startup information. */ + pi); /* Returns process information. */ + xfree (wcmdline); + xfree (wpgmname); + return res; +} + + +/* Fork and exec the PGMNAME, see exechelp.h for details. */ +gpg_error_t +gnupg_spawn_process (const char *pgmname, const char *argv[], + int *except, void (*preexec)(void), unsigned int flags, + estream_t *r_infp, + estream_t *r_outfp, + estream_t *r_errfp, + pid_t *pid) +{ + gpg_error_t err; + PROCESS_INFORMATION pi = {NULL }; + char *cmdline; + es_syshd_t syshd; + struct { + HANDLE hd; + int rvid; + } inpipe = {INVALID_HANDLE_VALUE, 0}; + struct { + HANDLE hd; + int rvid; + } outpipe = {INVALID_HANDLE_VALUE, 0}; + struct { + HANDLE hd; + int rvid; + } errpipe = {INVALID_HANDLE_VALUE, 0}; + estream_t outfp = NULL; + estream_t errfp = NULL; + gpg_err_source_t errsource = default_errsource; + + (void)except; /* Not yet used. */ + (void)preexec; + (void)flags; + + /* Setup return values. */ + if (r_outfp) + *r_outfp = NULL; + if (r_errfp) + *r_errfp = NULL; + *pid = (pid_t)(-1); /* Always required. */ + + log_debug ("%s: enter\n", __func__); + if (infp) + { + es_fflush (infp); + es_rewind (infp); + + /* Create a pipe to copy our infile to the stdin of the child + process. On success inpipe.hd is owned by the feeder. */ + inpipe.hd = _assuan_w32ce_prepare_pipe (&inpipe.rvid, 1); + if (inpipe.hd == INVALID_HANDLE_VALUE) + { + log_error ("_assuan_w32ce_prepare_pipe failed: %s\n", + w32_strerror (-1)); + gpg_err_set_errno (EIO); + return gpg_error_from_syserror (); + } + log_debug ("%s: inpipe %p created; hd=%p rvid=%d\n", __func__, + infp, inpipe.hd, inpipe.rvid); + err = start_feeder (infp, inpipe.hd, 1); + if (err) + { + log_error ("error spawning feeder: %s\n", gpg_strerror (err)); + CloseHandle (inpipe.hd); + return err; + } + inpipe.hd = INVALID_HANDLE_VALUE; /* Now owned by the feeder. */ + log_debug ("%s: inpipe %p created; feeder started\n", __func__, + infp); + } + + if (r_outfp) + { + /* Create a pipe to make the stdout of the child process + available as a stream. */ + outpipe.hd = _assuan_w32ce_prepare_pipe (&outpipe.rvid, 0); + if (outpipe.hd == INVALID_HANDLE_VALUE) + { + log_error ("_assuan_w32ce_prepare_pipe failed: %s\n", + w32_strerror (-1)); + gpg_err_set_errno (EIO); + /* Fixme release other stuff/kill feeder. */ + return gpg_error_from_syserror (); + } + syshd.type = ES_SYSHD_HANDLE; + syshd.u.handle = outpipe.hd; + err = 0; + outfp = es_sysopen (&syshd, "r"); + if (!outfp) + { + err = gpg_err_make (errsource, gpg_err_code_from_syserror ()); + log_error ("error opening pipe stream: %s\n", gpg_strerror (err)); + CloseHandle (outpipe.hd); + return err; + } + log_debug ("%s: outpipe %p created; hd=%p rvid=%d\n", __func__, + outfp, outpipe.hd, outpipe.rvid); + outpipe.hd = INVALID_HANDLE_VALUE; /* Now owned by the OUTFP. */ + } + + if (r_errfp) + { + /* Create a pipe to make the stderr of the child process + available as a stream. */ + errpipe.hd = _assuan_w32ce_prepare_pipe (&errpipe.rvid, 0); + if (errpipe.hd == INVALID_HANDLE_VALUE) + { + log_error ("_assuan_w32ce_prepare_pipe failed: %s\n", + w32_strerror (-1)); + gpg_err_set_errno (EIO); + /* Fixme release other stuff/kill feeder. */ + return gpg_error_from_syserror (); + } + syshd.type = ES_SYSHD_HANDLE; + syshd.u.handle = errpipe.hd; + err = 0; + errfp = es_sysopen (&syshd, "r"); + if (!errfp) + { + err = gpg_err_make (errsource, gpg_err_code_from_syserror ()); + log_error ("error opening pipe stream: %s\n", gpg_strerror (err)); + CloseHandle (errpipe.hd); + return err; + } + log_debug ("%s: errpipe %p created; hd=%p rvid=%d\n", __func__, + errfp, errpipe.hd, errpipe.rvid); + errpipe.hd = INVALID_HANDLE_VALUE; /* Now owned by the ERRFP. */ + } + + + + /* Build the command line. */ + err = build_w32_commandline (argv, inpipe.rvid, outpipe.rvid, errpipe.rvid, + &cmdline); + if (err) + { + /* Fixme release other stuff/kill feeder. */ + CloseHandle (errpipe.hd); + return err; + } + + log_debug ("CreateProcess, path='%s' cmdline='%s'\n", pgmname, cmdline); + if (!create_process (pgmname, cmdline, &pi)) + { + log_error ("CreateProcess failed: %s\n", w32_strerror (-1)); + xfree (cmdline); + /* Fixme release other stuff/kill feeder. */ + CloseHandle (errpipe.hd); + return gpg_error (GPG_ERR_GENERAL); + } + xfree (cmdline); + cmdline = NULL; + + /* Note: The other end of the pipe is a rendezvous id and thus there + is no need for a close. */ + + log_debug ("CreateProcess ready: hProcess=%p hThread=%p" + " dwProcessID=%d dwThreadId=%d\n", + pi.hProcess, pi.hThread, + (int) pi.dwProcessId, (int) pi.dwThreadId); + + + /* Process has been created suspended; resume it now. */ + ResumeThread (pi.hThread); + CloseHandle (pi.hThread); + + if (r_outfp) + *r_outfp = outfp; + if (r_errfp) + *r_errfp = errfp; + *pid = handle_to_pid (pi.hProcess); + return 0; +} + + + +/* Simplified version of gnupg_spawn_process. This function forks and + then execs PGMNAME, while connecting INFD to stdin, OUTFD to stdout + and ERRFD to stderr (any of them may be -1 to connect them to + /dev/null). The arguments for the process are expected in the NULL + terminated array ARGV. The program name itself should not be + included there. Calling gnupg_wait_process is required. + + Returns 0 on success or an error code. */ +gpg_error_t +gnupg_spawn_process_fd (const char *pgmname, const char *argv[], + int infd, int outfd, int errfd, pid_t *pid) +{ + gpg_error_t err; + PROCESS_INFORMATION pi = {NULL}; + char *cmdline; + + /* Setup return values. */ + *pid = (pid_t)(-1); + + if (infd != -1 || outfd != -1 || errfd != -1) + return gpg_error (GPG_ERR_NOT_SUPPORTED); + + /* Build the command line. */ + err = build_w32_commandline (argv, 0, 0, 0, &cmdline); + if (err) + return err; + + log_debug ("CreateProcess, path='%s' cmdline='%s'\n", pgmname, cmdline); + if (!create_process (pgmname, cmdline, &pi)) + { + log_error ("CreateProcess(fd) failed: %s\n", w32_strerror (-1)); + xfree (cmdline); + return gpg_error (GPG_ERR_GENERAL); + } + xfree (cmdline); + cmdline = NULL; + + log_debug ("CreateProcess(fd) ready: hProcess=%p hThread=%p" + " dwProcessID=%d dwThreadId=%d\n", + pi.hProcess, pi.hThread, + (int) pi.dwProcessId, (int) pi.dwThreadId); + + /* Process has been created suspended; resume it now. */ + ResumeThread (pi.hThread); + CloseHandle (pi.hThread); + + *pid = handle_to_pid (pi.hProcess); + return 0; +} + + +/* See exechelp.h for a description. */ +gpg_error_t +gnupg_wait_process (const char *pgmname, pid_t pid, int hang, int *exitcode) +{ + gpg_err_code_t ec; + HANDLE proc = fd_to_handle (pid); + int code; + DWORD exc; + + if (exitcode) + *exitcode = -1; + + if (pid == (pid_t)(-1)) + return gpg_error (GPG_ERR_INV_VALUE); + + /* FIXME: We should do a pth_waitpid here. However this has not yet + been implemented. A special W32 pth system call would even be + better. */ + code = WaitForSingleObject (proc, hang? INFINITE : 0); + switch (code) + { + case WAIT_TIMEOUT: + ec = GPG_ERR_TIMEOUT; + break; + + case WAIT_FAILED: + log_error (_("waiting for process %d to terminate failed: %s\n"), + (int)pid, w32_strerror (-1)); + ec = GPG_ERR_GENERAL; + break; + + case WAIT_OBJECT_0: + if (!GetExitCodeProcess (proc, &exc)) + { + log_error (_("error getting exit code of process %d: %s\n"), + (int)pid, w32_strerror (-1) ); + ec = GPG_ERR_GENERAL; + } + else if (exc) + { + log_error (_("error running '%s': exit status %d\n"), + pgmname, (int)exc ); + if (exitcode) + *exitcode = (int)exc; + ec = GPG_ERR_GENERAL; + } + else + { + if (exitcode) + *exitcode = 0; + ec = 0; + } + break; + + default: + log_error ("WaitForSingleObject returned unexpected " + "code %d for pid %d\n", code, (int)pid ); + ec = GPG_ERR_GENERAL; + break; + } + + return gpg_err_make (GPG_ERR_SOURCE_DEFAULT, ec); +} + + +/* See exechelp.h for a description. */ +gpg_error_t +gnupg_wait_processes (const char **pgmnames, pid_t *pids, size_t count, + int hang, int *r_exitcodes) +{ + return gpg_error (GPG_ERR_NOT_IMPLEMENTED); +} + + +void +gnupg_release_process (pid_t pid) +{ + if (pid != (pid_t)INVALID_HANDLE_VALUE) + { + HANDLE process = (HANDLE)pid; + + CloseHandle (process); + } +} + + +/* Spawn a new process and immediately detach from it. The name of + the program to exec is PGMNAME and its arguments are in ARGV (the + programname is automatically passed as first argument). + Environment strings in ENVP are set. An error is returned if + pgmname is not executable; to make this work it is necessary to + provide an absolute file name. All standard file descriptors are + connected to /dev/null. */ +gpg_error_t +gnupg_spawn_process_detached (const char *pgmname, const char *argv[], + const char *envp[] ) +{ + gpg_error_t err; + char *cmdline; + PROCESS_INFORMATION pi = {NULL }; + + (void)envp; + + /* Build the command line. */ + err = build_w32_commandline (argv, 0, 0, 0, &cmdline); + if (err) + return err; + + /* Note: There is no detached flag under CE. */ + log_debug ("CreateProcess, path='%s' cmdline='%s'\n", pgmname, cmdline); + if (!create_process (pgmname, cmdline, &pi)) + { + log_error ("CreateProcess(detached) failed: %s\n", w32_strerror (-1)); + xfree (cmdline); + return gpg_error (GPG_ERR_GENERAL); + } + xfree (cmdline); + cmdline = NULL; + + log_debug ("CreateProcess(detached) ready: hProcess=%p hThread=%p" + " dwProcessID=%d dwThreadId=%d\n", + pi.hProcess, pi.hThread, + (int) pi.dwProcessId, (int) pi.dwThreadId); + + /* Process has been created suspended; resume it now. */ + ResumeThread (pi.hThread); + CloseHandle (pi.hThread); + + return 0; +} + + +/* Kill a process; that is send an appropriate signal to the process. + gnupg_wait_process must be called to actually remove the process + from the system. An invalid PID is ignored. */ +void +gnupg_kill_process (pid_t pid) +{ + if (pid != (pid_t) INVALID_HANDLE_VALUE) + { + HANDLE process = (HANDLE) pid; + + /* Arbitrary error code. */ + TerminateProcess (process, 1); + } +} |