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-rw-r--r--erts/emulator/sys/win32/sys.c338
1 files changed, 253 insertions, 85 deletions
diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c
index 39b04b26a9..37041ed987 100644
--- a/erts/emulator/sys/win32/sys.c
+++ b/erts/emulator/sys/win32/sys.c
@@ -67,14 +67,17 @@ static void async_read_file(struct async_io* aio, LPVOID buf, DWORD numToRead);
static int async_write_file(struct async_io* aio, LPVOID buf, DWORD numToWrite);
static int get_overlapped_result(struct async_io* aio,
LPDWORD pBytesRead, BOOL wait);
-static BOOL CreateChildProcess(char *, HANDLE, HANDLE,
+static BOOL create_child_process(char *, HANDLE, HANDLE,
HANDLE, LPHANDLE, BOOL,
LPVOID, LPTSTR, unsigned,
char **, int *);
static int create_pipe(LPHANDLE, LPHANDLE, BOOL, BOOL);
-static int ApplicationType(const char* originalName, char fullPath[MAX_PATH],
+static int application_type(const char* originalName, char fullPath[MAX_PATH],
BOOL search_in_path, BOOL handle_quotes,
int *error_return);
+static int application_type_w(const char* originalName, WCHAR fullPath[MAX_PATH],
+ BOOL search_in_path, BOOL handle_quotes,
+ int *error_return);
HANDLE erts_service_event;
@@ -87,7 +90,7 @@ static erts_smp_atomic_t pipe_creation_counter;
static erts_smp_mtx_t sys_driver_data_lock;
-/* Results from ApplicationType is one of */
+/* Results from application_type(_w) is one of */
#define APPL_NONE 0
#define APPL_DOS 1
#define APPL_WIN3X 2
@@ -1235,8 +1238,10 @@ spawn_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts)
*/
DEBUGF(("Spawning \"%s\"\n", name));
- envir = win_build_environment(envir);
- ok = CreateChildProcess(name,
+ envir = win_build_environment(envir); /* Still an ansi environment, could be
+ converted to unicode for spawn_executable, but
+ that is not done (yet) */
+ ok = create_child_process(name,
hChildStdin,
hChildStdout,
hChildStderr,
@@ -1315,7 +1320,7 @@ create_file_thread(AsyncIo* aio, int mode)
}
/*
- * A helper function used by CreateChildProcess().
+ * A helper function used by create_child_process().
* Parses a command line with arguments and returns the length of the
* first part containing the program name.
* Example: input = "\"Program Files\"\\erl arg1 arg2"
@@ -1356,24 +1361,25 @@ int parse_command(char* cmd){
return i;
}
-BOOL need_quotes(char *str)
+static BOOL need_quotes(WCHAR *str)
{
int in_quote = 0;
int backslashed = 0;
int naked_space = 0;
- while (*str != '\0') {
+
+ while (*str != L'\0') {
switch (*str) {
- case '\\' :
+ case L'\\' :
backslashed = !backslashed;
break;
- case '"':
+ case L'"':
if (backslashed) {
backslashed=0;
} else {
in_quote = !in_quote;
}
break;
- case ' ':
+ case L' ':
backslashed = 0;
if (!(backslashed || in_quote)) {
naked_space++;
@@ -1392,7 +1398,7 @@ BOOL need_quotes(char *str)
/*
*----------------------------------------------------------------------
*
- * CreateChildProcess --
+ * create_child_process --
*
* Create a child process that has pipes as its
* standard input, output, and error. The child process runs
@@ -1417,7 +1423,7 @@ BOOL need_quotes(char *str)
*/
static BOOL
-CreateChildProcess
+create_child_process
(
char *origcmd, /* Command line for child process (including
* name of executable). Or whole executable if st is
@@ -1436,14 +1442,12 @@ CreateChildProcess
)
{
PROCESS_INFORMATION piProcInfo = {0};
- STARTUPINFO siStartInfo = {0};
BOOL ok = FALSE;
int applType;
/* Not to be changed for different types of executables */
int staticCreateFlags = GetPriorityClass(GetCurrentProcess());
int createFlags = DETACHED_PROCESS;
char *newcmdline = NULL;
- char execPath[MAX_PATH];
int cmdlength;
char* thecommand;
LPTSTR appname = NULL;
@@ -1451,14 +1455,17 @@ CreateChildProcess
*errno_return = -1;
- siStartInfo.cb = sizeof(STARTUPINFO);
- siStartInfo.dwFlags = STARTF_USESTDHANDLES;
- siStartInfo.hStdInput = hStdin;
- siStartInfo.hStdOutput = hStdout;
- siStartInfo.hStdError = hStderr;
-
if (st != ERTS_SPAWN_EXECUTABLE) {
+ STARTUPINFO siStartInfo = {0};
+ char execPath[MAX_PATH];
+
+ siStartInfo.cb = sizeof(STARTUPINFO);
+ siStartInfo.dwFlags = STARTF_USESTDHANDLES;
+ siStartInfo.hStdInput = hStdin;
+ siStartInfo.hStdOutput = hStdout;
+ siStartInfo.hStdError = hStderr;
+
/*
* Parse out the program name from the command line (it can be quoted and
* contain spaces).
@@ -1470,9 +1477,9 @@ CreateChildProcess
thecommand[cmdlength] = '\0';
DEBUGF(("spawn command: %s\n", thecommand));
- applType = ApplicationType(thecommand, execPath, TRUE,
+ applType = application_type(thecommand, execPath, TRUE,
TRUE, errno_return);
- DEBUGF(("ApplicationType returned for (%s) is %d\n", thecommand, applType));
+ DEBUGF(("application_type returned for (%s) is %d\n", thecommand, applType));
erts_free(ERTS_ALC_T_TMP, (void *) thecommand);
if (applType == APPL_NONE) {
erts_free(ERTS_ALC_T_TMP,newcmdline);
@@ -1501,126 +1508,147 @@ CreateChildProcess
strcat(newcmdline, execPath);
strcat(newcmdline, origcmd+cmdlength);
- } else { /* ERTS_SPAWN_EXECUTABLE */
+ DEBUGF(("Creating child process: %s, createFlags = %d\n", newcmdline, createFlags));
+ ok = CreateProcessA(appname,
+ newcmdline,
+ NULL,
+ NULL,
+ TRUE,
+ createFlags | staticCreateFlags,
+ env,
+ wd,
+ &siStartInfo,
+ &piProcInfo);
+
+ } else { /* ERTS_SPAWN_EXECUTABLE, filename and args are in unicode ({utf16,little}) */
int run_cmd = 0;
- applType = ApplicationType(origcmd, execPath, FALSE, FALSE,
- errno_return);
+ STARTUPINFOW siStartInfo = {0};
+ WCHAR execPath[MAX_PATH];
+
+
+ siStartInfo.cb = sizeof(STARTUPINFOW);
+ siStartInfo.dwFlags = STARTF_USESTDHANDLES;
+ siStartInfo.hStdInput = hStdin;
+ siStartInfo.hStdOutput = hStdout;
+ siStartInfo.hStdError = hStderr;
+
+ applType = application_type_w(origcmd, (char *) execPath, FALSE, FALSE,
+ errno_return);
if (applType == APPL_NONE) {
return FALSE;
}
if (applType == APPL_DOS) {
- /*
- * See comment above
- */
+ /*
+ * See comment above
+ */
- siStartInfo.wShowWindow = SW_HIDE;
- siStartInfo.dwFlags |= STARTF_USESHOWWINDOW;
- createFlags = CREATE_NEW_CONSOLE;
- run_cmd = 1;
+ siStartInfo.wShowWindow = SW_HIDE;
+ siStartInfo.dwFlags |= STARTF_USESHOWWINDOW;
+ createFlags = CREATE_NEW_CONSOLE;
+ run_cmd = 1;
} else if (hide) {
- DEBUGF(("hiding window\n"));
- siStartInfo.wShowWindow = SW_HIDE;
- siStartInfo.dwFlags |= STARTF_USESHOWWINDOW;
- createFlags = 0;
+ DEBUGF(("hiding window\n"));
+ siStartInfo.wShowWindow = SW_HIDE;
+ siStartInfo.dwFlags |= STARTF_USESHOWWINDOW;
+ createFlags = 0;
}
if (run_cmd) {
- char cmdPath[MAX_PATH];
+ WCHAR cmdPath[MAX_PATH];
int cmdType;
- cmdType = ApplicationType("cmd.exe", cmdPath, TRUE, FALSE, errno_return);
+ cmdType = application_type_w((char *) L"cmd.exe", (char *) cmdPath, TRUE, FALSE, errno_return);
if (cmdType == APPL_NONE || cmdType == APPL_DOS) {
return FALSE;
}
- appname = (char *) erts_alloc(ERTS_ALC_T_TMP, strlen(cmdPath)+1);
- strcpy(appname,cmdPath);
+ appname = (char *) erts_alloc(ERTS_ALC_T_TMP, (wcslen(cmdPath)+1)*sizeof(WCHAR));
+ wcscpy((WCHAR *) appname,cmdPath);
} else {
- appname = (char *) erts_alloc(ERTS_ALC_T_TMP, strlen(execPath)+1);
- strcpy(appname,execPath);
+ appname = (char *) erts_alloc(ERTS_ALC_T_TMP, (wcslen(execPath)+1)*sizeof(WCHAR));
+ wcscpy((WCHAR *) appname, execPath);
}
- if (argv == NULL) {
+ if (argv == NULL) {
BOOL orig_need_q = need_quotes(execPath);
- char *ptr;
- int ocl = strlen(execPath);
+ WCHAR *ptr;
+ int ocl = wcslen(execPath);
if (run_cmd) {
newcmdline = (char *) erts_alloc(ERTS_ALC_T_TMP,
- ocl + ((orig_need_q) ? 3 : 1)
- + 11);
- memcpy(newcmdline,"cmd.exe /c ",11);
- ptr = newcmdline + 11;
+ (ocl + ((orig_need_q) ? 3 : 1)
+ + 11)*sizeof(WCHAR));
+ memcpy(newcmdline,L"cmd.exe /c ",11*sizeof(WCHAR));
+ ptr = (WCHAR *) (newcmdline + (11*sizeof(WCHAR)));
} else {
newcmdline = (char *) erts_alloc(ERTS_ALC_T_TMP,
- ocl + ((orig_need_q) ? 3 : 1));
- ptr = newcmdline;
+ (ocl + ((orig_need_q) ? 3 : 1))*sizeof(WCHAR));
+ ptr = (WCHAR *) newcmdline;
}
if (orig_need_q) {
- *ptr++ = '"';
+ *ptr++ = L'"';
}
- memcpy(ptr,execPath,ocl);
+ memcpy(ptr,execPath,ocl*sizeof(WCHAR));
ptr += ocl;
if (orig_need_q) {
- *ptr++ = '"';
+ *ptr++ = L'"';
}
- *ptr = '\0';
+ *ptr = L'\0';
} else {
int sum = 1; /* '\0' */
- char **ar = argv;
- char *n;
+ WCHAR **ar = (WCHAR **) argv;
+ WCHAR *n;
char *save_arg0 = NULL;
if (argv[0] == erts_default_arg0 || run_cmd) {
save_arg0 = argv[0];
- argv[0] = execPath;
+ argv[0] = (char *) execPath;
}
if (run_cmd) {
sum += 11; /* cmd.exe /c */
}
while (*ar != NULL) {
- sum += strlen(*ar);
+ sum += wcslen(*ar);
if (need_quotes(*ar)) {
sum += 2; /* quotes */
}
sum++; /* space */
++ar;
}
- ar = argv;
- newcmdline = erts_alloc(ERTS_ALC_T_TMP, sum);
- n = newcmdline;
+ ar = (WCHAR **) argv;
+ newcmdline = erts_alloc(ERTS_ALC_T_TMP, sum*sizeof(WCHAR));
+ n = (WCHAR *) newcmdline;
if (run_cmd) {
- memcpy(n,"cmd.exe /c ",11);
+ memcpy(n,L"cmd.exe /c ",11*sizeof(WCHAR));
n += 11;
}
while (*ar != NULL) {
int q = need_quotes(*ar);
- sum = strlen(*ar);
+ sum = wcslen(*ar);
if (q) {
- *n++ = '"';
+ *n++ = L'"';
}
- memcpy(n,*ar,sum);
+ memcpy(n,*ar,sum*sizeof(WCHAR));
n += sum;
if (q) {
- *n++ = '"';
+ *n++ = L'"';
}
- *n++ = ' ';
+ *n++ = L' ';
++ar;
}
- ASSERT(n > newcmdline);
- *(n-1) = '\0';
+ *(n-1) = L'\0';
if (save_arg0 != NULL) {
argv[0] = save_arg0;
}
}
- }
- DEBUGF(("Creating child process: %s, createFlags = %d\n", newcmdline, createFlags));
- ok = CreateProcess(appname,
- newcmdline,
- NULL,
- NULL,
- TRUE,
- createFlags | staticCreateFlags,
- env,
- wd,
- &siStartInfo,
- &piProcInfo);
-
+ DEBUGF(("Creating child process: %s, createFlags = %d\n", newcmdline, createFlags));
+ ok = CreateProcessW((WCHAR *) appname,
+ (WCHAR *) newcmdline,
+ NULL,
+ NULL,
+ TRUE,
+ createFlags | staticCreateFlags,
+ env,
+ (WCHAR *) wd,
+ &siStartInfo,
+ &piProcInfo);
+
+ } /* end SPAWN_EXECUTABLE */
if (newcmdline != NULL) {
erts_free(ERTS_ALC_T_TMP,newcmdline);
}
@@ -1739,7 +1767,7 @@ static int create_pipe(HANDLE *phRead, HANDLE *phWrite, BOOL inheritRead, BOOL o
-static int ApplicationType
+static int application_type
(
const char *originalName, /* Name of the application to find. */
char fullPath[MAX_PATH], /* Filled with complete path to
@@ -1893,6 +1921,146 @@ static int ApplicationType
return applType;
}
+static int application_type_w (const char *originalName, /* Name of the application to find. */
+ WCHAR wfullpath[MAX_PATH],/* Filled with complete path to
+ * application. */
+ BOOL search_in_path, /* If we should search the system wide path */
+ BOOL handle_quotes, /* If we should handle quotes around executable */
+ int *error_return) /* A place to put an error code */
+{
+ int applType, i;
+ HANDLE hFile;
+ WCHAR *ext, *rest;
+ char buf[2];
+ DWORD read;
+ IMAGE_DOS_HEADER header;
+ static WCHAR extensions[][5] = {L"", L".com", L".exe", L".bat"};
+ int is_quoted;
+ int len;
+ WCHAR *wname = (WCHAR *) originalName;
+ WCHAR xfullpath[MAX_PATH];
+
+ len = wcslen(wname);
+ is_quoted = handle_quotes && len > 0 && wname[0] == L'"' &&
+ wname[len-1] == L'"';
+
+ applType = APPL_NONE;
+ *error_return = ENOENT;
+ for (i = 0; i < (int) (sizeof(extensions) / sizeof(extensions[0])); i++) {
+ if(is_quoted) {
+ lstrcpynW(xfullpath, wname+1, MAX_PATH - 7); /* Cannot start using StringCchCopy yet, we support
+ older platforms */
+ len = wcslen(xfullpath);
+ if(len > 0) {
+ xfullpath[len-1] = L'\0';
+ }
+ } else {
+ lstrcpynW(xfullpath, wname, MAX_PATH - 5);
+ }
+ wcscat(xfullpath, extensions[i]);
+ /* It seems that the Unicode version does not allow in and out parameter to overlap. */
+ SearchPathW((search_in_path) ? NULL : L".", xfullpath, NULL, MAX_PATH, wfullpath, &rest);
+
+ /*
+ * Ignore matches on directories or data files, return if identified
+ * a known type.
+ */
+
+ if (GetFileAttributesW(wfullpath) & FILE_ATTRIBUTE_DIRECTORY) {
+ continue;
+ }
+
+ ext = wcsrchr(wfullpath, L'.');
+ if ((ext != NULL) && (_wcsicmp(ext, L".bat") == 0)) {
+ *error_return = EACCES;
+ applType = APPL_DOS;
+ break;
+ }
+
+ hFile = CreateFileW(wfullpath, GENERIC_READ, FILE_SHARE_READ, NULL,
+ OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+ if (hFile == INVALID_HANDLE_VALUE) {
+ continue;
+ }
+
+ *error_return = EACCES; /* If considered an error,
+ it's an access error */
+ header.e_magic = 0;
+ ReadFile(hFile, (void *) &header, sizeof(header), &read, NULL);
+ if (header.e_magic != IMAGE_DOS_SIGNATURE) {
+ /*
+ * Doesn't have the magic number for relocatable executables. If
+ * filename ends with .com, assume it's a DOS application anyhow.
+ * Note that we didn't make this assumption at first, because some
+ * supposed .com files are really 32-bit executables with all the
+ * magic numbers and everything.
+ */
+
+ CloseHandle(hFile);
+ if ((ext != NULL) && (_wcsicmp(ext, L".com") == 0)) {
+ applType = APPL_DOS;
+ break;
+ }
+ continue;
+ }
+ if (header.e_lfarlc != sizeof(header)) {
+ /*
+ * All Windows 3.X and Win32 and some DOS programs have this value
+ * set here. If it doesn't, assume that since it already had the
+ * other magic number it was a DOS application.
+ */
+
+ CloseHandle(hFile);
+ applType = APPL_DOS;
+ break;
+ }
+
+ /*
+ * The DWORD at header.e_lfanew points to yet another magic number.
+ */
+
+ buf[0] = '\0';
+ SetFilePointer(hFile, header.e_lfanew, NULL, FILE_BEGIN);
+ ReadFile(hFile, (void *) buf, 2, &read, NULL);
+ CloseHandle(hFile);
+
+ if ((buf[0] == 'L') && (buf[1] == 'E')) {
+ applType = APPL_DOS;
+ } else if ((buf[0] == 'N') && (buf[1] == 'E')) {
+ applType = APPL_WIN3X;
+ } else if ((buf[0] == 'P') && (buf[1] == 'E')) {
+ applType = APPL_WIN32;
+ } else {
+ continue;
+ }
+ break;
+ }
+
+ if (applType == APPL_NONE) {
+ return APPL_NONE;
+ }
+
+ if ((applType == APPL_DOS) || (applType == APPL_WIN3X)) {
+ /*
+ * Replace long path name of executable with short path name for
+ * 16-bit applications. Otherwise the application may not be able
+ * to correctly parse its own command line to separate off the
+ * application name from the arguments.
+ */
+
+ GetShortPathNameW(wfullpath, wfullpath, MAX_PATH);
+ }
+ if (is_quoted) {
+ /* restore quotes on quoted program name */
+ len = wcslen(wfullpath);
+ memmove(wfullpath+1,wfullpath,len*sizeof(WCHAR));
+ wfullpath[0]=L'"';
+ wfullpath[len+1]=L'"';
+ wfullpath[len+2]=L'\0';
+ }
+ return applType;
+}
+
/*
* Thread function used to emulate overlapped reading.
*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 19:09:54 +0000