ref: 77b464a5d5648bb646467111b8faf719cd5c46b6
dir: /kern/win32.c/
#include <windows.h>
#include "u.h"
#include "lib.h"
#include "dat.h"
#include "fns.h"
typedef struct Oproc Oproc;
struct Oproc {
int tid;
HANDLE *sema;
};
static int tlsx = TLS_OUT_OF_INDEXES;
Proc*
_getproc(void)
{
if(tlsx == TLS_OUT_OF_INDEXES)
return nil;
return TlsGetValue(tlsx);
}
void
_setproc(Proc *p)
{
if(tlsx == TLS_OUT_OF_INDEXES){
tlsx = TlsAlloc();
if(tlsx == TLS_OUT_OF_INDEXES)
panic("out of indexes");
}
TlsSetValue(tlsx, p);
}
void
oserror(void)
{
oserrstr();
nexterror();
}
void
osinit(void)
{
Oproc *t;
static Proc firstprocCTstore;
_setproc(&firstprocCTstore);
t = (Oproc*)firstprocCTstore.oproc;
assert(t != 0);
t->tid = GetCurrentThreadId();
t->sema = CreateSemaphore(0, 0, 1000, 0);
if(t->sema == 0) {
oserror();
panic("could not create semaphore: %r");
}
}
void
osnewproc(Proc *p)
{
Oproc *op;
op = (Oproc*)p->oproc;
op->sema = CreateSemaphore(0, 0, 1000, 0);
if (op->sema == 0) {
oserror();
panic("could not create semaphore: %r");
}
}
void
osmsleep(int ms)
{
Sleep((DWORD) ms);
}
void
osyield(void)
{
Sleep(0);
}
static DWORD WINAPI
tramp(LPVOID vp)
{
Proc *p = (Proc *) vp;
Oproc *op = (Oproc*) p->oproc;
_setproc(p);
op->tid = GetCurrentThreadId();
(*p->fn)(p->arg);
pexit("", 0);
return 0;
}
void
osproc(Proc *p)
{
DWORD tid;
if(CreateThread(0, 0, tramp, p, 0, &tid) == 0) {
oserror();
panic("osproc: %r");
}
}
void
osexit(void)
{
ExitThread(0);
}
void
procsleep(void)
{
Proc *p;
Oproc *op;
p = up;
op = (Oproc*)p->oproc;
WaitForSingleObject(op->sema, INFINITE);}
void
procwakeup(Proc *p)
{
Oproc *op;
op = (Oproc*)p->oproc;
ReleaseSemaphore(op->sema, 1, 0);
}
BOOLEAN WINAPI (*RtlGenRandom)(PVOID, ULONG);
void
randominit(void)
{
HMODULE mod;
mod = LoadLibraryW(L"ADVAPI32.DLL");
if(mod != NULL)
RtlGenRandom = (void *) GetProcAddress(mod, "SystemFunction036");
}
ulong
randomread(void *v, ulong n)
{
RtlGenRandom(v, n);
return n;
}
#undef time
long
seconds(void)
{
return time(0);
}
ulong
ticks(void)
{
return GetTickCount();
}
int
wstrutflen(Rune *s)
{
int n;
for(n=0; *s; n+=runelen(*s),s++)
;
return n;
}
int
wstrtoutf(char *s, Rune *t, int n)
{
int i;
char *s0;
s0 = s;
if(n <= 0)
return wstrutflen(t)+1;
while(*t) {
if(n < UTFmax+1 && n < runelen(*t)+1) {
*s = 0;
return s-s0+wstrutflen(t)+1;
}
i = runetochar(s, t);
s += i;
n -= i;
t++;
}
*s = 0;
return s-s0;
}
/*
* Break the command line into arguments
* The rules for this are not documented but appear to be the following
* according to the source for the microsoft C library.
* Words are seperated by space or tab
* Words containing a space or tab can be quoted using "
* 2N backslashes + " ==> N backslashes and end quote
* 2N+1 backslashes + " ==> N backslashes + literal "
* N backslashes not followed by " ==> N backslashes
*/
static int
args(char *argv[], int n, char *p)
{
char *p2;
int i, j, quote, nbs;
for(i=0; *p && i<n-1; i++) {
while(*p == ' ' || *p == '\t')
p++;
quote = 0;
argv[i] = p2 = p;
for(;*p; p++) {
if(!quote && (*p == ' ' || *p == '\t'))
break;
for(nbs=0; *p == '\\'; p++,nbs++)
;
if(*p == '"') {
for(j=0; j<(nbs>>1); j++)
*p2++ = '\\';
if(nbs&1)
*p2++ = *p;
else
quote = !quote;
} else {
for(j=0; j<nbs; j++)
*p2++ = '\\';
*p2++ = *p;
}
}
/* move p up one to avoid pointing to null at end of p2 */
if(*p)
p++;
*p2 = 0;
}
argv[i] = 0;
return i;
}
/*
* Quote a single command line argument using the rules above.
*/
static char*
qarg(char *s)
{
char *d, *p;
int n, c;
n = strlen(s);
d = smalloc(3+2*n);
for(p = s; (c = *p) != 0; p++)
if(strchr(" \t\n\r\"", c) != nil)
break;
if(c == 0 && p != s){
memmove(d, s, n+1);
return d;
}
p = d;
*p++ = '"';
for(;;){
for(n = 0; (c = *s++) == '\\'; n++)
*p++ = c;
if(c == 0){
while(n-- > 0)
*p++ = '\\';
break;
}
if(c == '"'){
while(n-- >= 0)
*p++ = '\\';
}
*p++ = c;
}
*p++ = '"';
*p = 0;
return d;
}
extern int main(int, char*[]);
int APIENTRY
WinMain(HINSTANCE x, HINSTANCE y, LPSTR z, int w)
{
int argc, n;
char *arg, *p, **argv;
wchar_t *warg;
warg = GetCommandLineW();
n = wcslen(warg)*UTFmax+1;
arg = smalloc(n);
WideCharToMultiByte(CP_UTF8, 0, warg, -1, arg, n, 0, 0);
/* conservative guess at the number of args */
for(argc=4,p=arg; *p; p++)
if(*p == ' ' || *p == '\t')
argc++;
argv = smalloc(argc*sizeof(char*));
argc = args(argv, argc, arg);
main(argc, argv);
ExitThread(0);
return 0;
}
static wchar_t*
wcmdline(char **argv)
{
wchar_t *s, *w, *e;
int n, i;
char *q;
n = 0;
for(i = 0; argv[i] != nil; i++){
q = qarg(argv[i]);
n += strlen(q)+1;
free(q);
}
s = smalloc((n+1)*sizeof(wchar_t));
w = s;
e = s + n;
for(i = 0; argv[i] != nil; i++){
if(i != 0)
*w++ = L' ';
q = qarg(argv[i]);
w += MultiByteToWideChar(CP_UTF8, 0, q, strlen(q), w, e - w);
free(q);
}
*w = 0;
return s;
}
void*
oscmd(char **argv, int nice, char *dir, Chan **fd)
{
SECURITY_ATTRIBUTES sa;
PROCESS_INFORMATION pi;
STARTUPINFOW si;
HANDLE p[3][2], tmp;
wchar_t *wcmd, *wdir;
int i;
memset(&sa, 0, sizeof(sa));
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE;
for(i = 0; i < 3; i++){
if(!CreatePipe(&p[i][i==0], &p[i][i!=0], &sa, 0)
|| !DuplicateHandle(GetCurrentProcess(), p[i][0], GetCurrentProcess(), &tmp, 0, FALSE, DUPLICATE_SAME_ACCESS)){
while(--i >= 0){
CloseHandle(p[i][0]);
CloseHandle(p[i][1]);
}
oserror();
}
CloseHandle(p[i][0]);
p[i][0] = tmp;
}
if(waserror()){
for(i = 0; i < 3; i++){
CloseHandle(p[i][0]);
CloseHandle(p[i][1]);
}
nexterror();
}
memset(&pi, 0, sizeof(pi));
memset(&si, 0, sizeof(si));
si.cb = sizeof(si);
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = p[0][1];
si.hStdOutput = p[1][1];
si.hStdError = p[2][1];
si.lpDesktop = L"";
i = strlen(dir)+1;
wdir = smalloc(i*sizeof(wchar_t));
MultiByteToWideChar(CP_UTF8, 0, dir, i, wdir, i);
wcmd = wcmdline(argv);
if(waserror()){
free(wcmd);
nexterror();
}
if(!CreateProcessW(NULL, wcmd, NULL, NULL, TRUE, CREATE_NEW_PROCESS_GROUP|CREATE_NO_WINDOW, NULL, wdir, &si, &pi))
oserror();
poperror();
free(wcmd);
free(wdir);
poperror();
for(i = 0; i < 3; i++){
fd[i] = lfdchan((void*)p[i][0]);
CloseHandle(p[i][1]);
}
CloseHandle(pi.hThread);
return (void*)pi.hProcess;
}
int
oscmdwait(void *c, char *status, int nstatus)
{
DWORD code = -1;
for(;;){
if(!GetExitCodeProcess((HANDLE)c, &code))
return -1;
if(code != STILL_ACTIVE)
break;
WaitForSingleObject((HANDLE)c, INFINITE);
}
if(code == 0)
return snprint(status, nstatus, "0 0 0 0 ''");
return snprint(status, nstatus, "0 0 0 0 %d", (int)code);
}
int
oscmdkill(void *c)
{
TerminateProcess((HANDLE)c, 0);
return 0;
}
void
oscmdfree(void *c)
{
CloseHandle((HANDLE)c);
}
void
oserrstr(void)
{
char *p, *q;
int e, r;
e = GetLastError();
p = up->errstr; /* up kills last error */
r = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM,
0, e, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
p, ERRMAX, 0);
if(r == 0)
snprint(p, ERRMAX, "windows error %d", e);
for(q=p; *p; p++) {
if(*p == '\r')
continue;
if(*p == '\n')
*q++ = ' ';
else
*q++ = *p;
}
*q = '\0';
}
long
showfilewrite(char *a, int n)
{
wchar_t *action, *arg, *cmd, *p;
int m;
cmd = smalloc((n+1)*sizeof(wchar_t));
m = MultiByteToWideChar(CP_UTF8,0,a,n,cmd,n);
while(m > 0 && cmd[m-1] == '\n')
m--;
cmd[m] = 0;
p = wcschr(cmd, ' ');
if(p){
action = cmd;
*p++ = 0;
arg = p;
}else{
action = L"open";
arg = cmd;
}
ShellExecuteW(0, action, arg, 0, 0, SW_SHOWNORMAL);
free(cmd);
return n;
}
void
setterm(int raw)
{
DWORD mode;
HANDLE h;
h = GetStdHandle(STD_INPUT_HANDLE);
if(!GetConsoleMode(h, &mode))
return;
if(raw)
mode &= ~(ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
else
mode |= (ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
SetConsoleMode(h, mode);
FlushConsoleInputBuffer(h);
_setmode(0, raw? _O_BINARY: _O_TEXT);
}