thread_id
load_image(int32 argCount, const char **args, const char **environ)
{
char invoker[B_FILE_NAME_LENGTH];
char **newArgs = NULL;
int32 envCount = 0;
thread_id thread;
if (argCount < 1 || environ == NULL)
return B_BAD_VALUE;
// test validity of executable + support for scripts
{
status_t status = __test_executable(args[0], invoker);
if (status < B_OK)
return status;
if (invoker[0]) {
status = __parse_invoke_line(invoker, &newArgs,
(char * const **)&args, &argCount, args[0]);
if (status < B_OK)
return status;
}
}
// count environment variables
while (environ[envCount] != NULL)
envCount++;
char** flatArgs = NULL;
size_t flatArgsSize;
status_t status = __flatten_process_args(args, argCount, environ, envCount,
&flatArgs, &flatArgsSize);
if (status == B_OK) {
thread = _kern_load_image(flatArgs, flatArgsSize, argCount, envCount,
B_NORMAL_PRIORITY, B_WAIT_TILL_LOADED, -1, 0);
free(flatArgs);
} else
thread = status;
free(newArgs);
return thread;
}
static int
do_exec(const char* path, char* const args[], char* const environment[],
bool useDefaultInterpreter)
{
if (path == NULL || args == NULL) {
__set_errno(B_BAD_VALUE);
return -1;
}
// Count argument/environment list entries here, we don't want
// to do this in the kernel
int32 argCount = 0;
while (args[argCount] != NULL) {
argCount++;
}
int32 envCount = 0;
if (environment != NULL) {
while (environment[envCount] != NULL) {
envCount++;
}
}
if (argCount == 0) {
// we need some more info on what to do...
__set_errno(B_BAD_VALUE);
return -1;
}
// Test validity of executable + support for scripts
char invoker[B_FILE_NAME_LENGTH];
status_t status = __test_executable(path, invoker);
if (status < B_OK) {
if (status == B_NOT_AN_EXECUTABLE && useDefaultInterpreter) {
strcpy(invoker, "/bin/sh");
status = B_OK;
} else {
__set_errno(status);
return -1;
}
}
char** newArgs = NULL;
if (invoker[0] != '\0') {
status = __parse_invoke_line(invoker, &newArgs, &args, &argCount, path);
if (status < B_OK) {
__set_errno(status);
return -1;
}
path = newArgs[0];
}
char** flatArgs = NULL;
size_t flatArgsSize;
status = __flatten_process_args(newArgs ? newArgs : args, argCount,
environment, &envCount, path, &flatArgs, &flatArgsSize);
if (status == B_OK) {
__set_errno(_kern_exec(path, flatArgs, flatArgsSize, argCount, envCount,
__gUmask));
// if this call returns, something definitely went wrong
free(flatArgs);
} else
__set_errno(status);
free(newArgs);
return -1;
}
