void *writeT(){
char x;
while(1){
if(pipe_size==1){
if(pipe_wait==1){
printf("Pipe buf is full\n");
while(pipe_wait==1){}
}
scanf(" %c", &x);
pipe_write(x);
pipe_wait=1;
}else{
while(i_read == ((i_write+1)%pipe_size)){
printf("Pipe buf is full\n");
pipe_wait = 1;
while(pipe_wait==1){}
}
scanf(" %c", &x);
pipe_write(x);
pipe_wait=1;
i_write = (i_write+1)%pipe_size;
}
if(x==c_term){
pipe_close();
break;
}
}
return NULL;
}
static void handle_device_event(DWORD event_type) {
uint8_t byte = 0;
switch (event_type) {
case DBT_DEVICEARRIVAL:
log_debug("Received device notification (type: arrival)");
if (pipe_write(_notification_pipe[1], &byte, sizeof(byte)) < 0) {
log_error("Could not write to notification pipe: %s (%d)",
get_errno_name(errno), errno);
}
break;
case DBT_DEVICEREMOVECOMPLETE:
log_debug("Received device notification (type: removal)");
if (pipe_write(_notification_pipe[1], &byte, sizeof(byte)) < 0) {
log_error("Could not write to notification pipe: %s (%d)",
get_errno_name(errno), errno);
}
break;
}
}
// Create anonymous pipe, preventing inheritance of the read pipe and setting
// security of the write pipe to sa.
static bool _create_anonymous_pipe(unique_handle* pipe_read_out,
unique_handle* pipe_write_out,
SECURITY_ATTRIBUTES* sa) {
HANDLE pipe_read_raw = NULL;
HANDLE pipe_write_raw = NULL;
if (!CreatePipe(&pipe_read_raw, &pipe_write_raw, sa, 0)) {
fprintf(stderr, "Cannot create pipe: %s\n",
android::base::SystemErrorCodeToString(GetLastError()).c_str());
return false;
}
unique_handle pipe_read(pipe_read_raw);
pipe_read_raw = NULL;
unique_handle pipe_write(pipe_write_raw);
pipe_write_raw = NULL;
if (!_make_handle_noninheritable(pipe_read.get())) {
return false;
}
*pipe_read_out = std::move(pipe_read);
*pipe_write_out = std::move(pipe_write);
return true;
}
/*
* write method of the file structure
*/
unsigned int
wav_write(struct file *file, unsigned char *data, unsigned int count)
{
struct wav *f = (struct wav *)file;
unsigned int n;
if (f->wbytes >= 0 && count > f->wbytes) {
count = f->wbytes; /* wbytes fits in count */
if (count == 0) {
#ifdef DEBUG
if (debug_level >= 3) {
wav_dbg(f);
dbg_puts(": write complete\n");
}
#endif
file_hup(&f->pipe.file);
return 0;
}
}
n = pipe_write(file, data, count);
if (f->wbytes >= 0)
f->wbytes -= n;
f->endpos += n;
return n;
}
/*
* Writes to a file.
*/
PUBLIC ssize_t sys_write(int fd, const void *buf, size_t n)
{
dev_t dev; /* Device number. */
struct file *f; /* File. */
struct inode *i; /* Inode. */
ssize_t count = 0; /* Bytes actually written. */
/* Invalid file descriptor. */
if ((fd < 0) || (fd >= OPEN_MAX) || ((f = curr_proc->ofiles[fd]) == NULL))
return (-EBADF);
/* File not opened for writing. */
if (ACCMODE(f->oflag) == O_RDONLY)
return (-EBADF);
/* Invalid buffer. */
if (!chkmem(buf, n, MAY_READ))
return (-EINVAL);
i = f->inode;
/* Append mode. */
if (f->oflag & O_APPEND)
f->pos = i->size;
/* Character special file. */
if (S_ISCHR(i->mode))
{
dev = i->blocks[0];
count = cdev_write(dev, buf, n);
return (count);
}
/* Block special file. */
else if (S_ISBLK(i->mode))
{
dev = i->blocks[0];
count = bdev_write(dev, buf, n, f->pos);
}
/* Pipe file. */
else if (S_ISFIFO(i->mode))
{
kprintf("write to pipe");
count = pipe_write(i, buf, n);
}
/* Regular file. */
else if (S_ISREG(i->mode))
count = file_write(i, buf, n, f->pos);
/* Failed to write. */
if (count < 0)
return (curr_proc->errno);
f->pos += count;
return (count);
}
void type(run_params* par) {
int i;
if (par->argc < 1) {
pipe_write_s(par->err, "Too few arguments for 'type'.\n");
return;
}
char* filename = par->args[0];
node* n = node_get(filename, par->root_node, par->start_node);
if (n == NULL) {
pipe_write_s(par->err, "File does not exist.\n");
return;
}
if (n->directory) {
pipe_write_s(par->err, "File is a directory.\n");
return;
}
if (!node_try_lock(n)) {
pipe_write_s(par->err, "Can't open the file.\n");
return;
}
for (i = 0; i < n->content_len; i++) {
pipe_write(par->out, n->content[i]);
}
node_unlock(n);
}
/*########################### scp_close_file() ##########################*/
int
scp_close_file(void)
{
int status;
if ((status = pipe_write(data_fd, "\0", 1)) != 1)
{
if (errno != 0)
{
trans_log(ERROR_SIGN, __FILE__, __LINE__, "scp_close_file", NULL,
_("Failed to pipe_write() [close file] to pipe [%d] : %s"),
status, strerror(errno));
}
status = INCORRECT;
}
else
{
if (simulation_mode == YES)
{
status = SUCCESS;
}
else
{
status = get_ssh_reply(data_fd, YES);
}
}
return(status);
}
int open(const char *filename, int flags, ...)
{
static int (*open_orig)(const char *, int, mode_t);
int ret;
va_list ap;
mode_t mode;
if (!open_orig) {
open_orig = dlsym(RTLD_NEXT, "open");
}
va_start(ap, flags);
mode = va_arg(ap, mode_t);
va_end(ap);
if(strcmp(filename,"/tmp/a") != 0) {
ret = open_orig(filename, flags, mode);
//ret = syscall(SYS_open,redirect_name(filename),flags,mode);
} else {
//ret = fileno(popen("echo aaaa", "rb"));
if((flags & O_WRONLY) || (flags & O_RDWR)) {
ret = pipe_write();
} else {
ret = pipe_read();
}
//ssize_t write(int fd, const void *buf, size_t count);
}
//printf("open(\"%s\", 0x%x, %o) -> %d\n", filename, flags, mode, ret);
return ret;
}
int main(int argc, char **argv)
{
int res;
int i;
struct voxind_t *v;
struct sigaction act;
#ifdef DEBUG
{
struct stat buf;
while (!stat(VOXIND_DBG, &buf)) {
sleep(1);
}
}
#endif
ENTER();
BUILD_ASSERT(PIPE_MAX_BLOCK > MIN_MSG_SIZE);
memset(&act, 0, sizeof(act));
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
act.sa_handler = sighandler;
for (i = 1; i < NSIG; i++) {
sigaction(i, &act, NULL);
}
my_voxind = calloc(1, sizeof(struct voxind_t));
if (!my_voxind) {
res = errno;
goto exit0;
}
my_voxind->msg = calloc(1, PIPE_MAX_BLOCK);
if (!my_voxind->msg) {
res = errno;
goto exit0;
}
my_voxind->msg_length = PIPE_MAX_BLOCK;
res = pipe_restore(&my_voxind->pipe_command, PIPE_COMMAND_FILENO);
if (res)
goto exit0;
atexit(my_exit);
do {
size_t msg_length = my_voxind->msg_length;
if(pipe_read(my_voxind->pipe_command, my_voxind->msg, &msg_length))
goto exit0;
if (unserialize(my_voxind->msg, &msg_length))
goto exit0;
pipe_write(my_voxind->pipe_command, my_voxind->msg, &msg_length);
} while (1);
exit0:
err("LEAVE, (err=%d)",res);
return res;
}
static void pipe_producer(toolbox_t *box)
{
apr_uint32_t loop = 500;
do {
pipe_write(box, '.');
} while (loop--);
}
void echo(run_params* par) {
int i;
for (i = 0; i < par->argc; i++) {
pipe_write_s(par->out, par->args[i]);
}
pipe_write(par->out, '\n');
}
void c_pipe(run_params* par) {
int c = 0;
while (1) {
c = pipe_read(par->in);
if (c == -1) break;
pipe_write(par->out, c);
}
}
int mill_pipesend(struct mill_pipe_s *mp, void *ptr) {
int rc = pipe_write(mp, ptr);
if (mill_slow(rc == -1)) {
/* mill_panic("attempt to send to a closed pipe"); */
errno = EPIPE;
return -1;
}
return 0;
}
int Y_PipeWrite(int pipe_id, void *buf, int len, UserContext *user_context) {
log_info("PID(%d) going to write to pipe %d", running_proc->pid, pipe_id);
pipe_t *pipe = (pipe_t*)util_get(pipe_id);
if(pipe == NULL) {
log_err("Cannot get pipe %d from hashmap", pipe->id);
}
return pipe_write(pipe, buf, len, user_context);
}
void __attribute__((weak)) putc(int c)
{
if (c == '\n')
putc('\r');
#ifdef CONFIG_COPY_STDOUT_TO_CONSOLE
console_putc(c);
#endif
if (!bathos_stdout)
return;
pipe_write(bathos_stdout, (char *)&c, 1);
}
void* dealer_thread(){
request recived_request;
int new_conn;
pid_t son;
printf("[Dealer]Politica:%s\n",policy);
sem_wait(sem_full);
sem_wait(sem_buffer);
printf("[Schedule]%p\n",buffer);
recived_request=buffer->request_list[0];
/*buffer->out++;*/
new_conn=recived_request.socket_id;
printf("[Schedule]Recebi do Buffer:%d\n",recived_request.socket_id);
sem_post(sem_buffer);
sem_post(sem_empty);
/* Process request*/
get_request(new_conn);
/* Verify if request is for a page or script*/
if(!strncmp(req_buf,CGI_EXPR,strlen(CGI_EXPR))){
/*manda para um processo pelos pipes*/
if((son=fork())==0){
/*criar nova função para leitura de scripts e envior para a message queue*/
strcpy(recived_request.request_type,"dinamic");
strcpy(recived_request.request_file,req_buf);
execute_script(new_conn);
}
waitpid(son,0,0);
}
else{
strcpy(recived_request.request_type,"static");
strcpy(recived_request.request_file,req_buf);
pipe_write(0,recived_request);
}
sleep(20);
// Terminate connection with client
close(new_conn);
printf("[Dealer]terminei serviço\n");
}
void find_key(char *S_short) //打印出用户选择的方向盘、AD值和其AD值代表的按键
{
printf("\nThe SteelKey you select is : %s\n",SteelKey);
printf("\nThe SteelLine you select is :%s\n",steelLine);
printf("The steelAD you select is : %d\n",num);
printf("The key you push is %s\n\n",S_short);
pipe_write("find"); //找到AD
}
int event_stop_platform(void) {
uint8_t byte = 0;
if (pipe_write(&_stop_pipe, &byte, sizeof(byte)) < 0) {
log_error("Could not write to stop pipe: %s (%d)",
get_errno_name(errno), errno);
return -1;
}
return 0;
}
/**
* handle_client: Main application layer thread for each client
* @author ndemarinis (Basic implementation)
*/
void *handle_client(void *data)
{
struct client_handler_data *clnt = (struct client_handler_data *)data;
int pipes[2]; // Make a pipe to connect to the layer stack
int to_read, bytes_written;
char read_buffer[PIPE_BUFFER_SIZE];
struct packet* pkt_in;
pid_t clnt_pid; // PID we receive from the cilent before startup
struct layer_stack *stack; // Work data for layer stack implementation
memset(read_buffer, 0, PIPE_BUFFER_SIZE);
// Receive the client's PID for use as an identifier.
if((recv(clnt->sock, &clnt_pid, sizeof(pid_t), 0) != sizeof(pid_t)))
die_with_error("Error receiving PID from client!");
stack = create_layer_stack(clnt->sock, clnt_pid, pipes); // Initialize all of our layer threads
sleep(1); // Wait for the layer stack creation to settle
for(;;)
{
// Just try and echo a message for now.
printf("%d: APP: Starting a test read.\n\n", clnt_pid);
// Grab a string
if((to_read = read(pipe_read(pipes), read_buffer, PIPE_BUFFER_SIZE)) <= 0)
{
printf("%d: APP: Read 0 bytes from socket. Terminating!\n", clnt_pid);
break;
}
pkt_in = (struct packet *)read_buffer;
printf("%d: APP: Read packet of %d bytes with payload of %d bytes\n",
clnt_pid, to_read, pkt_in->length);
// Send it straight back
printf("%d: APP: Sending packet of %d bytes back to client\n", clnt_pid, to_read);
if((bytes_written = write(pipe_write(pipes), read_buffer, to_read)) <= 0)
{
printf("%d: APP: Wrote %d bytes, socket must have closed. Terminating!\n",
clnt_pid, bytes_written);
break;
}
}
printf("%d: Client successfully terminated!\n", clnt_pid);
pthread_exit(NULL);
}
static ssize_t IMFS_fifo_write(
rtems_libio_t *iop,
const void *buffer,
size_t count
)
{
IMFS_jnode_t *jnode = iop->pathinfo.node_access;
int err = pipe_write(JNODE2PIPE(jnode), buffer, count, iop);
if (err > 0) {
IMFS_mtime_ctime_update(jnode);
}
IMFS_FIFO_RETURN(err);
}
ssize_t IMFS_fifo_write(
epos_libio_t *iop,
const void *buffer,
size_t count
)
{
IMFS_jnode_t *jnode = iop->file_info;
int err = pipe_write(JNODE2PIPE(jnode), buffer, count, iop);
if (err > 0) {
IMFS_mtime_ctime_update(jnode);
}
IMFS_FIFO_RETURN(err);
}
static void term_thread(MainWindow * m, SOCKET * fd)
{
char cmd = OC_CMD_CANCEL;
if (*fd != INVALID_SOCKET) {
int ret = pipe_write(*fd, &cmd, 1);
if (ret < 0)
m->updateProgressBar(QObject::tr("term_thread: IPC error: ") +
QString::number(net_errno));
*fd = INVALID_SOCKET;
ms_sleep(200);
} else {
m->vpn_status_changed(STATUS_DISCONNECTED);
}
}
/**
* Writes at most length bytes from the specified buffer to the file identified
* by filehandle, starting at the current position, and advancing the position.
*
* @return The number of bytes actually written. It is invalid to write to
* FILEHANDLE_STDIN. In this case, VFS_INVALID_PARAMS is returned.
*/
int io_write(int file, void* buffer, int length)
{
int res;
// Don't pipe if writing to std
if (file > 2) {
// Get the pipe for the file
pipe_t *pipe = pipe_get_pipe(file);
// Don't read to empty pipes
if (pipe == NULL) {
KERNEL_PANIC("Cannot write from empty pipe\n");
}
// Get the read end and update the file
file = pipe->write_end;
// Write to the pipe buffer
pipe_write(buffer, length, pipe);
}
switch(file) {
case FILEHANDLE_STDIN:
res = VFS_INVALID_PARAMS;
break;
case FILEHANDLE_STDOUT:
res = tty_write_stdout(buffer, length);
break;
case FILEHANDLE_STDERR:
res = tty_write_stderr(buffer, length);
break;
default:
file -= 3;
if (!process_has_open_file(file)) {
res = VFS_NOT_OPEN_IN_PROCESS;
} else {
res = vfs_write(file, buffer, length);
}
}
//
return res;
}
/**
* Push a new message onto the Message Queue
*
* @param mq Message Queue
* @param id General purpose Identifier
* @param data Application data
*
* @return 0 if success, otherwise errorcode
*/
int mqueue_push(struct mqueue *mq, int id, void *data)
{
struct msg msg;
ssize_t n;
if (!mq)
return EINVAL;
msg.id = id;
msg.data = data;
msg.magic = MAGIC;
n = pipe_write(mq->pfd[1], &msg, sizeof(msg));
if (n < 0)
return errno;
return (n != sizeof(msg)) ? EPIPE : 0;
}
static void my_exit()
{
struct msg_t msg;
size_t l = sizeof(struct msg_t);
int res;
ENTER();
memset(&msg, 0, MIN_MSG_SIZE);
msg.id = MSG_EXIT;
dbg("send exit msg");
res = pipe_write(my_voxind->pipe_command, &msg, &l);
if (res) {
err("LEAVE, write error (%d)", res);
}
LEAVE();
}
/*########################## scp_open_file() ############################*/
int
scp_open_file(char *filename, off_t size, mode_t mode)
{
int status;
size_t length;
char cmd[MAX_PATH_LENGTH];
length = snprintf(cmd, MAX_PATH_LENGTH,
#if SIZEOF_OFF_T == 4
"C%04o %ld %s\n",
#else
"C%04o %lld %s\n",
#endif
(mode & (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)),
(pri_off_t)size, filename);
if ((status = pipe_write(data_fd, cmd, length)) != length)
{
if (errno != 0)
{
cmd[length - 1] = '\0';
trans_log(ERROR_SIGN, __FILE__, __LINE__, "scp_open_file", NULL,
_("Failed to pipe_write() `%s' to pipe [%d] : %s"),
cmd, status, strerror(errno));
}
status = INCORRECT;
}
else
{
if (simulation_mode == YES)
{
status = SUCCESS;
}
else
{
status = get_ssh_reply(data_fd, YES);
}
}
return(status);
}
static void rzt_destructor_proc(task_spec *spec, int free_mem)
{
idle_end(spec);
log_dbg("rztask destructor called.");
// if the maout zfin scanner saved some text for us, we
// need to manually re-insert it into the pipe.
zfinscanstate *maout = (zfinscanstate*)spec->maout_refcon;
if(maout->savebuf) {
log_dbg("RESTORE %d saved bytes into pipe: %s",
maout->savecnt, sanitize(maout->savebuf, maout->savecnt));
pipe_write(&spec->master->master_output, maout->savebuf, maout->savecnt);
}
if(free_mem) {
zfin_destroy(spec->inma_refcon);
zfin_destroy(spec->maout_refcon);
}
task_default_destructor(spec, free_mem);
}
void parent_rdwr (struct pipes *pipes, fd_set *rfds, fd_set *wfds, int nFds, int nForks)
{
int i = 0;
int nChecked_fds = 0;
i = 0;
while (nChecked_fds < nFds) {
if (FD_ISSET (pipes[i].rfd, rfds)) {
if (!pipe_read (&pipes[i])) {
if(close (pipes[i].rfd) == -1) ERROR("CLOSE ERROR5");
}
nChecked_fds++;
}
if (FD_ISSET (pipes[i].wfd, wfds)) {
pipe_write (&pipes[i]);
if (pipes[i].can_write == 2 && pipes[i].wfd != STDOUT_FILENO)
{
if (close (pipes[i].wfd) == -1) ERROR("CLOSE ERROR6");
}
nChecked_fds++;
}
i++;
}
}
static void iokit_handle_notifications(void *opaque, io_service_t service,
uint32_t message_type, void *message_argument) {
io_connect_t *root_port = opaque;
uint8_t byte = 0;
(void)service;
switch (message_type) {
case kIOMessageCanSystemSleep:
IOAllowPowerChange(*root_port, (long)message_argument);
break;
case kIOMessageSystemWillSleep:
IOAllowPowerChange(*root_port, (long)message_argument);
log_debug("Received IOKit sleep notification");
break;
case kIOMessageSystemWillPowerOn:
break;
case kIOMessageSystemHasPoweredOn:
log_debug("Received IOKit wakeup notification");
if (pipe_write(&_notification_pipe, &byte, sizeof(byte)) < 0) {
log_error("Could not write to notification pipe: %s (%d)",
get_errno_name(errno), errno);
}
break;
default:
break;
}
}
void worker_wakeup (worker_t *worker)
{
pipe_write (worker->wakeup_fd[1], "W", 1);
}
