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/*
** The following macros are used to cast pointers to integers and
** integers to pointers. The way you do this varies from one compiler
** to the next, so we have developed the following set of #if statements
** to generate appropriate macros for a wide range of compilers.
**
** The correct "ANSI" way to do this is to use the intptr_t type.
** Unfortunately, that typedef is not available on all compilers, or
** if it is available, it requires an #include of specific headers
** that vary from one machine to the next.
**
** This code is copied out of SQLite.
*/
#if defined(__PTRDIFF_TYPE__) /* This case should work for GCC */
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/*
** The following macros are used to cast pointers to integers and
** integers to pointers. The way you do this varies from one compiler
** to the next, so we have developed the following set of #if statements
** to generate appropriate macros for a wide range of compilers.
**
** The correct "ANSI" way to do this is to use the intptr_t type.
** Unfortunately, that typedef is not available on all compilers, or
** if it is available, it requires an #include of specific headers
** that vary from one machine to the next.
**
** This code is copied out of SQLite.
*/
#if defined(__PTRDIFF_TYPE__) /* This case should work for GCC */
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}
return rc!=0;
}
#endif
/*
** Create a child process running shell command "zCmd". *ppOut is
** a FILE that becomes the standard input of the child process.
** (The caller writes to *ppOut in order to send text to the child.)
** *ppIn is stdout from the child process. (The caller
** reads from *ppIn in order to receive input from the child.)
** Note that *ppIn is an unbuffered file descriptor, not a FILE.
** The process ID of the child is written into *pChildPid.
**
** Return the number of errors.
*/
int popen2(const char *zCmd, int *pfdIn, FILE **ppOut, int *pChildPid){
#ifdef _WIN32
HANDLE hStdinRd, hStdinWr, hStdoutRd, hStdoutWr, hStderr;
SECURITY_ATTRIBUTES saAttr;
DWORD childPid = 0;
int fd;
saAttr.nLength = sizeof(saAttr);
saAttr.bInheritHandle = TRUE;
saAttr.lpSecurityDescriptor = NULL;
hStderr = GetStdHandle(STD_ERROR_HANDLE);
if( !CreatePipe(&hStdoutRd, &hStdoutWr, &saAttr, 4096) ){
win32_fatal_error("cannot create pipe for stdout");
}
SetHandleInformation( hStdoutRd, HANDLE_FLAG_INHERIT, FALSE);
if( !CreatePipe(&hStdinRd, &hStdinWr, &saAttr, 4096) ){
win32_fatal_error("cannot create pipe for stdin");
}
SetHandleInformation( hStdinWr, HANDLE_FLAG_INHERIT, FALSE);
CloseHandle(hStdinRd);
CloseHandle(hStdoutWr);
return 0;
#else
int pin[2], pout[2];
*pfdIn = 0;
*ppOut = 0;
*pChildPid = 0;
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}
return rc!=0;
}
#endif
/*
** Create a child process running shell command "zCmd". *ppOut is
** a FILE that becomes the standard input of the child process.
** (The caller writes to *ppOut in order to send text to the child.)
** *ppIn is stdout from the child process. (The caller
** reads from *ppIn in order to receive input from the child.)
** Note that *ppIn is an unbuffered file descriptor, not a FILE.
** The process ID of the child is written into *pChildPid.
**
** Return the number of errors.
*/
int popen2(const char *zCmd, int *pfdIn, FILE **ppOut, int *pChildPid){
#ifdef _WIN32
HANDLE hStdinRd, hStdinWr, hStdoutRd, hStdoutWr, hStderr;
SECURITY_ATTRIBUTES saAttr;
DWORD childPid = 0;
int fd;
saAttr.nLength = sizeof(saAttr);
saAttr.bInheritHandle = TRUE;
saAttr.lpSecurityDescriptor = NULL;
hStderr = GetStdHandle(STD_ERROR_HANDLE);
if( !CreatePipe(&hStdoutRd, &hStdoutWr, &saAttr, 4096) ){
win32_fatal_error("cannot create pipe for stdout");
}
SetHandleInformation( hStdoutRd, HANDLE_FLAG_INHERIT, FALSE);
if( !CreatePipe(&hStdinRd, &hStdinWr, &saAttr, 4096) ){
win32_fatal_error("cannot create pipe for stdin");
}
SetHandleInformation( hStdinWr, HANDLE_FLAG_INHERIT, FALSE);
win32_create_child_process(fossil_utf8_to_unicode(zCmd),
hStdinRd, hStdoutWr, hStderr,&childPid);
*pChildPid = childPid;
*pfdIn = _open_osfhandle(PTR_TO_INT(hStdoutRd), 0);
fd = _open_osfhandle(PTR_TO_INT(hStdinWr), 0);
*ppOut = _fdopen(fd, "w");
CloseHandle(hStdinRd);
CloseHandle(hStdoutWr);
return 0;
#else
int pin[2], pout[2];
*pfdIn = 0;
*ppOut = 0;
*pChildPid = 0;
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