Add SIGWINCH signal and functionality in tty and support in PM.

diff --git a/drivers/tty/tty.c b/drivers/tty/tty.c
index ea3cdb9a108ff43c31624f4978a3ae3cba03e2f8..4034a0b933ee6ab51972a96d2fddf9ef949745fb 100644 (file)
--- a/drivers/tty/tty.c
+++ b/drivers/tty/tty.c
@@ -646,7 +646,7 @@ message *m_ptr;                     /* pointer to message sent to task */
     case TIOCSWINSZ:
        r = sys_vircopy( m_ptr->PROC_NR, D, (vir_bytes) m_ptr->ADDRESS,
                SELF, D, (vir_bytes) &tp->tty_winsize, (vir_bytes) size);
-       /* SIGWINCH... */
+       sigchar(tp, SIGWINCH);
        break;
 
 #if ENABLE_SRCCOMPAT

diff --git a/include/signal.h b/include/signal.h
index f813ffb4374672fb1876e50fb04706a913c034ca..f88b27b3746d5ecf7d5926f000269594c150972a 100755 (executable)
--- a/include/signal.h
+++ b/include/signal.h
@@ -25,8 +25,6 @@ typedef unsigned long sigset_t;
 #endif
 #endif
 
-#define _NSIG             20   /* number of signals used */
-
 #define SIGHUP             1   /* hangup */
 #define SIGINT             2   /* interrupt (DEL) */
 #define SIGQUIT            3   /* quit (ASCII FS) */
@@ -55,6 +53,11 @@ typedef unsigned long sigset_t;
 #define SIGKSIG          19    /* kernel signal pending */
 #define SIGKSTOP         20    /* kernel shutting down */
 
+/* Regular signals. */
+#define SIGWINCH         21    /* window size has changed */
+
+#define _NSIG             21   /* number of signals used */
+
 /* POSIX requires the following signals to be defined, even if they are
  * not supported.  Here are the definitions, but they are not supported.
  */

diff --git a/servers/pm/main.c b/servers/pm/main.c
index 04e98843ba94e89043a51063cab37c3604373632..66731e601607c842a4814294c7a03cef58ab46a3 100644 (file)
--- a/servers/pm/main.c
+++ b/servers/pm/main.c
@@ -154,7 +154,7 @@ PRIVATE void pm_init()
   register struct boot_image *ip;
   static char core_sigs[] = { SIGQUIT, SIGILL, SIGTRAP, SIGABRT,
                        SIGEMT, SIGFPE, SIGUSR1, SIGSEGV, SIGUSR2 };
-  static char ign_sigs[] = { SIGCHLD };
+  static char ign_sigs[] = { SIGCHLD, SIGWINCH };
   register struct mproc *rmp;
   register char *sig_ptr;
   phys_clicks total_clicks, minix_clicks, free_clicks;

diff --git a/servers/pm/signal.c b/servers/pm/signal.c
index 621828b1f4dcb04791e15c5331a372d4ab2a9e2b..b2bc1a649f315354f1bfbe073049ea0f85183f4d 100644 (file)
--- a/servers/pm/signal.c
+++ b/servers/pm/signal.c
@@ -244,15 +244,16 @@ sigset_t sig_map;
   /* Check each bit in turn to see if a signal is to be sent.  Unlike
    * kill(), the kernel may collect several unrelated signals for a
    * process and pass them to PM in one blow.  Thus loop on the bit
-   * map. For SIGINT and SIGQUIT, use proc_id 0 to indicate a broadcast
-   * to the recipient's process group.  For SIGKILL, use proc_id -1 to
-   * indicate a systemwide broadcast.
+   * map. For SIGINT, SIGWINCH and SIGQUIT, use proc_id 0 to indicate
+   * a broadcast to the recipient's process group.  For SIGKILL, use
+   * proc_id -1 to indicate a systemwide broadcast.
    */
   for (i = 1; i <= _NSIG; i++) {
        if (!sigismember(&sig_map, i)) continue;
        switch (i) {
            case SIGINT:
            case SIGQUIT:
+           case SIGWINCH:
                id = 0; break;  /* broadcast to process group */
            case SIGKILL:
                id = -1; break; /* broadcast to all except INIT */