fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / char / n_r3964.c

diff --git a/drivers/char/n_r3964.c b/drivers/char/n_r3964.c
index c48de09..dc6d418 100644 (file)
--- a/drivers/char/n_r3964.c
+++ b/drivers/char/n_r3964.c
@@ -125,8 +125,8 @@ static void transmit_block(struct r3964_info *pInfo);
 static void receive_char(struct r3964_info *pInfo, const unsigned char c);
 static void receive_error(struct r3964_info *pInfo, const char flag);
 static void on_timeout(unsigned long priv);
-static int enable_signals(struct r3964_info *pInfo, pid_t pid, int arg);
-static int read_telegram(struct r3964_info *pInfo, pid_t pid, unsigned char __user *buf);
+static int enable_signals(struct r3964_info *pInfo, struct pid *pid, int arg);
+static int read_telegram(struct r3964_info *pInfo, struct pid *pid, unsigned char __user *buf);
 static void add_msg(struct r3964_client_info *pClient, int msg_id, int arg,
              int error_code, struct r3964_block_header *pBlock);
 static struct r3964_message* remove_msg(struct r3964_info *pInfo, 
@@ -142,7 +142,7 @@ static ssize_t r3964_write(struct tty_struct * tty, struct file * file,
                       const unsigned char * buf, size_t nr);
 static int r3964_ioctl(struct tty_struct * tty, struct file * file,
                        unsigned int cmd, unsigned long arg);
-static void r3964_set_termios(struct tty_struct *tty, struct termios * old);
+static void r3964_set_termios(struct tty_struct *tty, struct ktermios * old);
 static unsigned int r3964_poll(struct tty_struct * tty, struct file * file,
                      struct poll_table_struct  *wait);
 static void r3964_receive_buf(struct tty_struct *tty, const unsigned char *cp,
@@ -829,7 +829,7 @@ static void on_timeout(unsigned long priv)
 }
 
 static struct r3964_client_info *findClient(
-  struct r3964_info *pInfo, pid_t pid)
+  struct r3964_info *pInfo, struct pid *pid)
 {
    struct r3964_client_info *pClient;
    
@@ -843,7 +843,7 @@ static struct r3964_client_info *findClient(
    return NULL;
 }
 
-static int enable_signals(struct r3964_info *pInfo, pid_t pid, int arg)
+static int enable_signals(struct r3964_info *pInfo, struct pid *pid, int arg)
 {
    struct r3964_client_info *pClient;
    struct r3964_client_info **ppClient;
@@ -858,7 +858,7 @@ static int enable_signals(struct r3964_info *pInfo, pid_t pid, int arg)
          
          if(pClient->pid == pid)
          {
-            TRACE_PS("removing client %d from client list", pid);
+            TRACE_PS("removing client %d from client list", pid_nr(pid));
             *ppClient = pClient->next;
             while(pClient->msg_count)
             {
@@ -869,6 +869,7 @@ static int enable_signals(struct r3964_info *pInfo, pid_t pid, int arg)
                   TRACE_M("enable_signals - msg kfree %p",pMsg);
                }
             }
+           put_pid(pClient->pid);
             kfree(pClient);
             TRACE_M("enable_signals - kfree %p",pClient);
             return 0;
@@ -892,10 +893,10 @@ static int enable_signals(struct r3964_info *pInfo, pid_t pid, int arg)
          if(pClient==NULL)
             return -ENOMEM;
 
-         TRACE_PS("add client %d to client list", pid);
+         TRACE_PS("add client %d to client list", pid_nr(pid));
         spin_lock_init(&pClient->lock);
          pClient->sig_flags=arg;
-         pClient->pid = pid;
+         pClient->pid = get_pid(pid);
          pClient->next=pInfo->firstClient;
          pClient->first_msg = NULL;
          pClient->last_msg = NULL;
@@ -908,7 +909,7 @@ static int enable_signals(struct r3964_info *pInfo, pid_t pid, int arg)
    return 0;
 }
 
-static int read_telegram(struct r3964_info *pInfo, pid_t pid, unsigned char __user *buf)
+static int read_telegram(struct r3964_info *pInfo, struct pid *pid, unsigned char __user *buf)
 {
     struct r3964_client_info *pClient;
     struct r3964_block_header *block;
@@ -951,7 +952,8 @@ static void add_msg(struct r3964_client_info *pClient, int msg_id, int arg,
    {
 queue_the_message:
 
-      pMsg = kmalloc(sizeof(struct r3964_message), GFP_KERNEL);
+      pMsg = kmalloc(sizeof(struct r3964_message),
+                    error_code?GFP_ATOMIC:GFP_KERNEL);
       TRACE_M("add_msg - kmalloc %p",pMsg);
       if(pMsg==NULL) {
          return;
@@ -1004,7 +1006,7 @@ queue_the_message:
    /* Send SIGIO signal to client process: */
    if(pClient->sig_flags & R3964_USE_SIGIO)
    {
-      kill_proc(pClient->pid, SIGIO, 1);
+      kill_pid(pClient->pid, SIGIO, 1);
    }
 }
 
@@ -1041,7 +1043,7 @@ static void remove_client_block(struct r3964_info *pInfo,
 {
     struct r3964_block_header *block;
 
-    TRACE_PS("remove_client_block PID %d", pClient->pid);
+    TRACE_PS("remove_client_block PID %d", pid_nr(pClient->pid));
 
     block=pClient->next_block_to_read;
     if(block)
@@ -1156,6 +1158,7 @@ static void r3964_close(struct tty_struct *tty)
              TRACE_M("r3964_close - msg kfree %p",pMsg);
           }
        }
+       put_pid(pClient->pid);
        kfree(pClient);
        TRACE_M("r3964_close - client kfree %p",pClient);
        pClient=pNext;
@@ -1192,12 +1195,11 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
    struct r3964_client_message theMsg;
    DECLARE_WAITQUEUE (wait, current);
    
-   int pid = current->pid;
    int count;
    
    TRACE_L("read()");
  
-   pClient=findClient(pInfo, pid);
+   pClient=findClient(pInfo, task_pid(current));
    if(pClient)
    {
       pMsg = remove_msg(pInfo, pClient);
@@ -1251,7 +1253,6 @@ static ssize_t r3964_write(struct tty_struct * tty, struct file * file,
    struct r3964_block_header *pHeader;
    struct r3964_client_info *pClient;
    unsigned char *new_data;
-   int pid;
    
    TRACE_L("write request, %d characters", count);
 /* 
@@ -1294,9 +1295,7 @@ static ssize_t r3964_write(struct tty_struct * tty, struct file * file,
    pHeader->locks = 0;
    pHeader->owner = NULL;
    
-   pid=current->pid;
-   
-   pClient=findClient(pInfo, pid);
+   pClient=findClient(pInfo, task_pid(current));
    if(pClient)
    {
       pHeader->owner = pClient;
@@ -1327,7 +1326,7 @@ static int r3964_ioctl(struct tty_struct * tty, struct file * file,
    switch(cmd)
    {
       case R3964_ENABLE_SIGNALS:
-         return enable_signals(pInfo, current->pid, arg);
+         return enable_signals(pInfo, task_pid(current), arg);
       case R3964_SETPRIORITY:
          if(arg<R3964_MASTER || arg>R3964_SLAVE)
             return -EINVAL;
@@ -1340,13 +1339,13 @@ static int r3964_ioctl(struct tty_struct * tty, struct file * file,
             pInfo->flags &= ~R3964_BCC;
          return 0;
       case R3964_READ_TELEGRAM:
-         return read_telegram(pInfo, current->pid, (unsigned char __user *)arg);
+         return read_telegram(pInfo, task_pid(current), (unsigned char __user *)arg);
       default:
          return -ENOIOCTLCMD;
    }
 }
 
-static void r3964_set_termios(struct tty_struct *tty, struct termios * old)
+static void r3964_set_termios(struct tty_struct *tty, struct ktermios * old)
 {
    TRACE_L("set_termios");
 }
@@ -1356,7 +1355,6 @@ static unsigned int r3964_poll(struct tty_struct * tty, struct file * file,
                      struct poll_table_struct *wait)
 {
    struct r3964_info *pInfo=(struct r3964_info*)tty->disc_data;
-   int pid=current->pid;
    struct r3964_client_info *pClient;
    struct r3964_message *pMsg=NULL;
    unsigned long flags;
@@ -1364,7 +1362,7 @@ static unsigned int r3964_poll(struct tty_struct * tty, struct file * file,
 
    TRACE_L("POLL");
 
-   pClient=findClient(pInfo,pid);
+   pClient=findClient(pInfo, task_pid(current));
    if(pClient)
      {
        poll_wait(file, &pInfo->read_wait, wait);