summaryrefslogtreecommitdiff
path: root/Build/source/libs/libgnuw32/system.c
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/libs/libgnuw32/system.c')
-rw-r--r--Build/source/libs/libgnuw32/system.c307
1 files changed, 307 insertions, 0 deletions
diff --git a/Build/source/libs/libgnuw32/system.c b/Build/source/libs/libgnuw32/system.c
new file mode 100644
index 00000000000..fbc20a8f513
--- /dev/null
+++ b/Build/source/libs/libgnuw32/system.c
@@ -0,0 +1,307 @@
+/* libc replacement functions for win32.
+
+Copyright (C) 1998, 99 Free Software Foundation, Inc.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+This library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+/*
+ This does make sense only under WIN32.
+ Functions:
+ - win32_system() rewritten
+ */
+
+#include <win32lib.h>
+#include <errno.h>
+
+#undef _DEBUG
+
+#ifdef _DEBUG
+#define TRACE(x) x
+#else
+#define TRACE(x)
+#endif
+
+extern char *quote_args(char **argv);
+extern void free_cmd_pipe(char ***cmd_pipe, int nCmds);
+
+/*
+ It has been proven that system() fails to retrieve exit codes
+ under Win9x. This is a workaround for this bug.
+*/
+
+int __cdecl win32_system(const char *cmd, int async)
+{
+ STARTUPINFO si;
+ PROCESS_INFORMATION pi;
+ DWORD ret = 0, dwCode;
+ HANDLE *hIn, *hOut, *hProcess, hDummyIn, hDummyOut, hDummyErr, hCurrentProcess;
+ int i, j, nCmds;
+
+ char *app_name = NULL, *new_cmd = NULL;
+ char *red_input, *red_output, ***cmd_pipe;
+
+ /* Reset errno ??? */
+ errno = 0;
+
+ /* Admittedly, the command interpreter will allways be found. */
+ if (! cmd) {
+ TRACE(fprintf(stderr, "system: (null) command.\n"));
+ errno = 0;
+ return 1;
+ }
+
+ cmd_pipe = parse_cmdline(cmd, &red_input, &red_output, &nCmds);
+
+ if (nCmds == 0) {
+ /* Failed to find the command or malformed cmd */
+ TRACE(fprintf(stderr, "system: failed to find command.\n"));
+ errno = ENOEXEC;
+ return -1;
+ }
+
+ /* First time, allow to call the command interpretor */
+ if (look_for_cmd(cmd_pipe[0][0], &app_name) == FALSE) {
+ /* releasing previous split */
+ TRACE(fprintf(stderr, "look for command: `%s' not found, concatenating comspec\n", cmd_pipe[0][0]));
+ free_cmd_pipe(cmd_pipe, nCmds);
+ new_cmd = concatn(getenv("COMSPEC"), " /c ", cmd, NULL);
+ TRACE(fprintf(stderr, "new command is: %s\n", new_cmd));
+ cmd_pipe = parse_cmdline(new_cmd, &red_input, &red_output, &nCmds);
+ if (nCmds == 0 || look_for_cmd(cmd_pipe[0][0], &app_name) == FALSE) {
+ /* Failed to find the command or malformed cmd */
+ TRACE(fprintf(stderr, "system: failed to find command.\n"));
+ errno = ENOEXEC;
+ return -1;
+ }
+ }
+
+ /* Arrays for pipes handles and process handles */
+ hIn = malloc(nCmds * sizeof(HANDLE));
+ hOut = malloc(nCmds * sizeof(HANDLE));
+ hProcess = malloc(nCmds * sizeof(HANDLE));
+
+ for (i = 0; i < nCmds; i++) {
+ hIn[i] = hOut[i] = hProcess[i] = INVALID_HANDLE_VALUE;
+ }
+
+ /* We need this handle to duplicate other handles */
+ hCurrentProcess = GetCurrentProcess();
+
+ TRACE(fprintf(stderr, "%d cmds found\n", nCmds));
+
+ /* First time, use red_input if available */
+
+ if (red_input) {
+ hIn[0] = CreateFile(red_input,
+ GENERIC_READ,
+ FILE_SHARE_READ | FILE_SHARE_WRITE,
+ NULL, /* non inheritable */
+ OPEN_EXISTING,
+ FILE_ATTRIBUTE_NORMAL,
+ NULL);
+ if (hIn[0] == INVALID_HANDLE_VALUE) {
+ TRACE(fprintf(stderr, "system: failed to open hIn (%s) with error %d.\n", red_input, GetLastError()));
+ errno = EIO;
+ return -1;
+ }
+
+ TRACE(fprintf(stderr, "First pipe input redirected to %s\n", red_input));
+
+ }
+ else {
+ hDummyIn = GetStdHandle(STD_INPUT_HANDLE);
+ DuplicateHandle(hCurrentProcess, hDummyIn,
+ hCurrentProcess, &hIn[0], 0,
+ FALSE,
+ DUPLICATE_SAME_ACCESS);
+ TRACE(fprintf(stderr, "STD_INPUT_HANDLE %x -> %x\n", hDummyIn, hIn[0]));
+ }
+
+ /* Last time, use red_output if available */
+ if (red_output) {
+ hOut[nCmds - 1] = CreateFile(red_output,
+ GENERIC_WRITE,
+ FILE_SHARE_READ | FILE_SHARE_WRITE,
+ NULL, /* non inheritable */
+ CREATE_ALWAYS,
+ FILE_ATTRIBUTE_NORMAL,
+ NULL);
+ if (hOut[nCmds - 1] == INVALID_HANDLE_VALUE) {
+
+ TRACE(fprintf(stderr, "system: failed to open hOut (%s) with error %d.\n",
+ red_output, GetLastError()));
+
+ errno = EIO;
+ return -1;
+ }
+
+ TRACE(fprintf(stderr, "Last pipe output redirected to %s\n", red_output));
+
+ }
+ else {
+ hDummyOut = GetStdHandle(STD_OUTPUT_HANDLE);
+ DuplicateHandle(hCurrentProcess, hDummyOut,
+ hCurrentProcess, &hOut[nCmds - 1], 0,
+ FALSE,
+ DUPLICATE_SAME_ACCESS);
+ TRACE(fprintf(stderr, "STD_OUTPUT_HANDLE %x -> %x\n", hDummyOut, hOut[nCmds - 1]));
+ }
+
+ hDummyErr = GetStdHandle(STD_ERROR_HANDLE);
+
+
+ /* Loop on every command */
+ for (i = 0; i < nCmds; i++) {
+
+ /* free the cmd and build the current one */
+ if (new_cmd) {
+ free(new_cmd);
+ new_cmd = NULL;
+ }
+ if (app_name) {
+ free(app_name);
+ app_name = NULL;
+ }
+
+ /* Get the real app_name */
+ if (look_for_cmd(cmd_pipe[i][0], &app_name) == FALSE) {
+ errno = ENOEXEC;
+ ret = -1;
+ goto cleanup;
+ }
+
+ new_cmd = quote_args(cmd_pipe[i]);
+
+ TRACE(fprintf(stderr, "Cmd[%d] = %s\n", i, new_cmd));
+
+ if (i < nCmds - 1) {
+ /* Handles are created non-inheritable */
+ if (CreatePipe(&hIn[i+1], &hOut[i], NULL, 4096) == FALSE) {
+ fprintf(stderr, "win32_system(%s) call failed to create pipe (Error %d).\n", cmd, GetLastError());
+ }
+
+ TRACE(fprintf(stderr, "Creating pipe between hOut[%d] = %x and hIn[%d] = %x\n",
+ i, hOut[i], i+1, hIn[i+1]));
+
+ }
+
+ /* Enable handle inheritance for hIn[i] */
+ DuplicateHandle(hCurrentProcess, hIn[i],
+ hCurrentProcess, &hDummyIn, 0,
+ TRUE,
+ DUPLICATE_SAME_ACCESS);
+
+ TRACE(fprintf(stderr, "Duplicating hIn %x -> %x\n", hIn[i], hDummyIn));
+
+ /* Enable handle inheritance for hOut[i] */
+ DuplicateHandle(hCurrentProcess, hOut[i],
+ hCurrentProcess, &hDummyOut, 0,
+ TRUE,
+ DUPLICATE_SAME_ACCESS);
+
+ TRACE(fprintf(stderr, "Duplicating hOut %x -> %x\n", hOut[i], hDummyOut));
+
+ /* We don't need them anymore */
+ CloseHandle(hIn[i]);
+ CloseHandle(hOut[i]);
+ TRACE(fprintf(stderr, "Close handles hIn = %x and hOut = %x\n", hIn[i], hOut[i]));
+
+ ZeroMemory( &si, sizeof(STARTUPINFO) );
+ si.cb = sizeof(STARTUPINFO);
+ si.dwFlags = STARTF_USESTDHANDLES /* | STARTF_USESHOWWINDOW */ ;
+ si.wShowWindow = 0 /* SW_SHOWDEFAULT */ ;
+ si.hStdInput = hDummyIn;
+ si.hStdOutput = hDummyOut;
+ si.hStdError = hDummyErr;
+
+ TRACE(fprintf(stderr, "Executing: %s (app_name = %s)\n", new_cmd, app_name));
+
+ dwCode = CreateProcess(app_name,
+ new_cmd,
+ NULL,
+ NULL,
+ TRUE,
+ 0,
+ NULL,
+ NULL,
+ &si,
+ &pi);
+
+ TRACE(fprintf(stderr, "New cmd(%s), process handle %x, Id %d, ret (%d), error (%d).\n",
+ new_cmd, pi.hProcess, pi.dwProcessId, dwCode,
+ (dwCode ? 0 : GetLastError() )));
+
+ CloseHandle(hDummyIn);
+ CloseHandle(hDummyOut);
+
+ if (dwCode != 0) {
+ TRACE(fprintf(stderr, "StdIn = %x(%x), StdOut = %x(%x)\n",
+ hIn[i], hDummyIn, hOut[i], hDummyOut));
+
+ /* Only the process handle is needed */
+ CloseHandle(pi.hThread);
+ hProcess[i] = pi.hProcess;
+ }
+ else {
+ fprintf(stderr, "win32_system(%s) call failed to create process (Error %d, hProcess %d).\n", new_cmd, GetLastError(), pi.hProcess);
+ ret = -1;
+ goto cleanup;
+ }
+ }
+
+ cleanup:
+
+ for (i = 0; i < nCmds; i++) {
+ if (hProcess[i] != INVALID_HANDLE_VALUE) {
+ if (ret == -1) {
+ TerminateProcess(hProcess[i], -1);
+ }
+ else if (async == 0) {
+ DWORD dwRet = WaitForSingleObject(hProcess[i], INFINITE);
+ if (dwRet == WAIT_OBJECT_0) {
+
+ TRACE(fprintf(stderr, "Process %d exited\n", i));
+
+ }
+ else {
+ fprintf(stderr, "Failed to wait for process termination: %s (Ret %d, Error %d)\n",
+ cmd, dwRet, GetLastError());
+ ret = -1;
+ }
+ }
+ }
+ }
+
+ if (async == 0 && hProcess[nCmds - 1] != INVALID_HANDLE_VALUE) {
+ if (GetExitCodeProcess(hProcess[nCmds - 1], &ret) == 0) {
+ fprintf(stderr, "Failed to retrieve exit code: %s (Error %d)\n", cmd, GetLastError());
+ ret = -1;
+ }
+
+ TRACE(fprintf(stderr, "All processes terminated, exit code = %d\n", ret));
+
+ }
+
+ for(i = 0; i < nCmds; i++) {
+ if (hProcess[i] != INVALID_HANDLE_VALUE)
+ CloseHandle(hProcess[i]);
+ }
+ free_cmd_pipe(cmd_pipe, nCmds);
+
+ if (new_cmd) free(new_cmd);
+ if (app_name) free(app_name);
+
+ return ret;
+}