From eb4f9669716367912244182dd0eb788759f800ec Mon Sep 17 00:00:00 2001 From: Eli Zaretskii Date: Sat, 28 Jan 2012 16:50:21 +0000 Subject: Fix failures on MS-Windows when Make's standard handles are invalid. This can happen when Make is invoked from a GUI application. * w32/subproc/sub_proc.c (process_init_fd): Don't dereference pproc if it is a NULL pointer. (process_begin, process_cleanup): Don't try to close pipe handles whose value is INVALID_HANDLE_VALUE. (process_easy): Initialize hIn, hOut, and hErr to INVALID_HANDLE_VALUE. If DuplicateHandle fails with ERROR_INVALID_HANDLE, duplicate a handle for the null device instead of STD_INPUT_HANDLE, STD_OUTPUT_HANDLE or STD_ERROR_HANDLE. Don't try to close pipe handles whose value is INVALID_HANDLE_VALUE. * function.c (windows32_openpipe): Initialize hIn and hErr to INVALID_HANDLE_VALUE. If DuplicateHandle fails with ERROR_INVALID_HANDLE, duplicate a handle for the null device instead of STD_INPUT_HANDLE or STD_ERROR_HANDLE. Fix indentation. Don't try to close handles whose value is INVALID_HANDLE_VALUE. --- w32/subproc/sub_proc.c | 165 +++++++++++++++++++++++++++++++++---------------- 1 file changed, 113 insertions(+), 52 deletions(-) (limited to 'w32/subproc/sub_proc.c') diff --git a/w32/subproc/sub_proc.c b/w32/subproc/sub_proc.c index be5f1a2..2b1b29c 100644 --- a/w32/subproc/sub_proc.c +++ b/w32/subproc/sub_proc.c @@ -462,17 +462,19 @@ process_init_fd(HANDLE stdinh, HANDLE stdouth, HANDLE stderrh) sub_process *pproc; pproc = malloc(sizeof(*pproc)); - memset(pproc, 0, sizeof(*pproc)); + if (pproc) { + memset(pproc, 0, sizeof(*pproc)); - /* - * Just pass the provided file handles to the 'child side' of the - * pipe, bypassing pipes altogether. - */ - pproc->sv_stdin[1] = (intptr_t) stdinh; - pproc->sv_stdout[1] = (intptr_t) stdouth; - pproc->sv_stderr[1] = (intptr_t) stderrh; + /* + * Just pass the provided file handles to the 'child + * side' of the pipe, bypassing pipes altogether. + */ + pproc->sv_stdin[1] = (intptr_t) stdinh; + pproc->sv_stdout[1] = (intptr_t) stdouth; + pproc->sv_stderr[1] = (intptr_t) stderrh; - pproc->last_err = pproc->lerrno = 0; + pproc->last_err = pproc->lerrno = 0; + } return((HANDLE)pproc); } @@ -711,9 +713,12 @@ process_begin( CloseHandle(procInfo.hThread); /* Close the halves of the pipes we don't need */ - CloseHandle((HANDLE)pproc->sv_stdin[1]); - CloseHandle((HANDLE)pproc->sv_stdout[1]); - CloseHandle((HANDLE)pproc->sv_stderr[1]); + if ((HANDLE)pproc->sv_stdin[1] != INVALID_HANDLE_VALUE) + CloseHandle((HANDLE)pproc->sv_stdin[1]); + if ((HANDLE)pproc->sv_stdout[1] != INVALID_HANDLE_VALUE) + CloseHandle((HANDLE)pproc->sv_stdout[1]); + if ((HANDLE)pproc->sv_stderr[1] != INVALID_HANDLE_VALUE) + CloseHandle((HANDLE)pproc->sv_stderr[1]); pproc->sv_stdin[1] = 0; pproc->sv_stdout[1] = 0; pproc->sv_stderr[1] = 0; @@ -1064,11 +1069,14 @@ process_cleanup( if (pproc->using_pipes) { for (i= 0; i <= 1; i++) { - if ((HANDLE)pproc->sv_stdin[i]) + if ((HANDLE)pproc->sv_stdin[i] + && (HANDLE)pproc->sv_stdin[i] != INVALID_HANDLE_VALUE) CloseHandle((HANDLE)pproc->sv_stdin[i]); - if ((HANDLE)pproc->sv_stdout[i]) + if ((HANDLE)pproc->sv_stdout[i] + && (HANDLE)pproc->sv_stdout[i] != INVALID_HANDLE_VALUE) CloseHandle((HANDLE)pproc->sv_stdout[i]); - if ((HANDLE)pproc->sv_stderr[i]) + if ((HANDLE)pproc->sv_stderr[i] + && (HANDLE)pproc->sv_stderr[i] != INVALID_HANDLE_VALUE) CloseHandle((HANDLE)pproc->sv_stderr[i]); } } @@ -1333,50 +1341,100 @@ process_easy( char **argv, char **envp) { - HANDLE hIn; - HANDLE hOut; - HANDLE hErr; - HANDLE hProcess; + HANDLE hIn = INVALID_HANDLE_VALUE; + HANDLE hOut = INVALID_HANDLE_VALUE; + HANDLE hErr = INVALID_HANDLE_VALUE; + HANDLE hProcess, tmpIn, tmpOut, tmpErr; + DWORD e; if (proc_index >= MAXIMUM_WAIT_OBJECTS) { DB (DB_JOBS, ("process_easy: All process slots used up\n")); return INVALID_HANDLE_VALUE; } + /* Standard handles returned by GetStdHandle can be NULL or + INVALID_HANDLE_VALUE if the parent process closed them. If that + happens, we open the null device and pass its handle to + CreateProcess as the corresponding handle to inherit. */ + tmpIn = GetStdHandle(STD_INPUT_HANDLE); if (DuplicateHandle(GetCurrentProcess(), - GetStdHandle(STD_INPUT_HANDLE), - GetCurrentProcess(), - &hIn, - 0, - TRUE, - DUPLICATE_SAME_ACCESS) == FALSE) { - fprintf(stderr, - "process_easy: DuplicateHandle(In) failed (e=%ld)\n", - GetLastError()); - return INVALID_HANDLE_VALUE; + tmpIn, + GetCurrentProcess(), + &hIn, + 0, + TRUE, + DUPLICATE_SAME_ACCESS) == FALSE) { + if ((e = GetLastError()) == ERROR_INVALID_HANDLE) { + tmpIn = CreateFile("NUL", GENERIC_READ, + FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, + OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); + if (tmpIn != INVALID_HANDLE_VALUE + && DuplicateHandle(GetCurrentProcess(), + tmpIn, + GetCurrentProcess(), + &hIn, + 0, + TRUE, + DUPLICATE_SAME_ACCESS) == FALSE) + CloseHandle(tmpIn); + } + if (hIn == INVALID_HANDLE_VALUE) { + fprintf(stderr, "process_easy: DuplicateHandle(In) failed (e=%ld)\n", e); + return INVALID_HANDLE_VALUE; + } } + tmpOut = GetStdHandle (STD_OUTPUT_HANDLE); if (DuplicateHandle(GetCurrentProcess(), - GetStdHandle(STD_OUTPUT_HANDLE), - GetCurrentProcess(), - &hOut, - 0, - TRUE, - DUPLICATE_SAME_ACCESS) == FALSE) { - fprintf(stderr, - "process_easy: DuplicateHandle(Out) failed (e=%ld)\n", - GetLastError()); - return INVALID_HANDLE_VALUE; + tmpOut, + GetCurrentProcess(), + &hOut, + 0, + TRUE, + DUPLICATE_SAME_ACCESS) == FALSE) { + if ((e = GetLastError()) == ERROR_INVALID_HANDLE) { + tmpOut = CreateFile("NUL", GENERIC_WRITE, + FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, + OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); + if (tmpOut != INVALID_HANDLE_VALUE + && DuplicateHandle(GetCurrentProcess(), + tmpOut, + GetCurrentProcess(), + &hOut, + 0, + TRUE, + DUPLICATE_SAME_ACCESS) == FALSE) + CloseHandle(tmpOut); + } + if (hOut == INVALID_HANDLE_VALUE) { + fprintf(stderr, "process_easy: DuplicateHandle(Out) failed (e=%ld)\n", e); + return INVALID_HANDLE_VALUE; + } } + tmpErr = GetStdHandle(STD_ERROR_HANDLE); if (DuplicateHandle(GetCurrentProcess(), - GetStdHandle(STD_ERROR_HANDLE), - GetCurrentProcess(), - &hErr, - 0, - TRUE, - DUPLICATE_SAME_ACCESS) == FALSE) { - fprintf(stderr, - "process_easy: DuplicateHandle(Err) failed (e=%ld)\n", - GetLastError()); - return INVALID_HANDLE_VALUE; + tmpErr, + GetCurrentProcess(), + &hErr, + 0, + TRUE, + DUPLICATE_SAME_ACCESS) == FALSE) { + if ((e = GetLastError()) == ERROR_INVALID_HANDLE) { + tmpErr = CreateFile("NUL", GENERIC_WRITE, + FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, + OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); + if (tmpErr != INVALID_HANDLE_VALUE + && DuplicateHandle(GetCurrentProcess(), + tmpErr, + GetCurrentProcess(), + &hErr, + 0, + TRUE, + DUPLICATE_SAME_ACCESS) == FALSE) + CloseHandle(tmpErr); + } + if (hErr == INVALID_HANDLE_VALUE) { + fprintf(stderr, "process_easy: DuplicateHandle(Err) failed (e=%ld)\n", e); + return INVALID_HANDLE_VALUE; + } } hProcess = process_init_fd(hIn, hOut, hErr); @@ -1389,9 +1447,12 @@ process_easy( ((sub_process*) hProcess)->exit_code = process_last_err(hProcess); /* close up unused handles */ - CloseHandle(hIn); - CloseHandle(hOut); - CloseHandle(hErr); + if (hIn != INVALID_HANDLE_VALUE) + CloseHandle(hIn); + if (hOut != INVALID_HANDLE_VALUE) + CloseHandle(hOut); + if (hErr != INVALID_HANDLE_VALUE) + CloseHandle(hErr); } process_register(hProcess); -- cgit v1.2.3