From f5c0446975d0e1109a1c15f272f35fd7e20dbf9b Mon Sep 17 00:00:00 2001
From: james <>
Date: Fri, 15 Feb 2008 19:51:30 +0000
Subject: *** empty log message ***

---
 src/lockfile.c   | 97 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/lockfile.h   | 15 +++++++++
 src/prototypes.h | 29 ++++++++++++++---
 src/serial.c     | 38 +++++++++-------------
 4 files changed, 151 insertions(+), 28 deletions(-)

diff --git a/src/lockfile.c b/src/lockfile.c
index 9c7acc0..451901c 100644
--- a/src/lockfile.c
+++ b/src/lockfile.c
@@ -10,6 +10,9 @@ static char rcsid[] = "$Id$";
 
 /*
  * $Log$
+ * Revision 1.7  2008/02/15 19:51:30  james
+ * *** empty log message ***
+ *
  * Revision 1.6  2008/02/15 19:09:00  james
  * *** empty log message ***
  *
@@ -426,6 +429,100 @@ lockfile_lock (Filelist * fl)
   return ret;
 }
 
+void
+lockfile_unlock (Filelist * fl)
+{
+
+  while (fl->head)
+    {
+      unlink (fl->head->name);
+      filelist_remove (fl, fl->head);
+    }
+}
+
+
+/* If we have a passive lock, check noone has an */
+/* active one, returns 1 if he does, 0 if he doesnt */
+int
+serial_lock_check (Serial_lock * l)
+{
+  Filelist_ent *fle;
+  int locks_found = 0;
+  struct stat buf;
+  struct timeval now, dif;
+
+  if (l->mode == SERIAL_LOCK_ACTIVE)
+    return 0;
+
+  for (fle = l->locks_to_check; fle; fle = fle->next)
+    {
+      if (!stat (fle->name, &buf))
+        locks_found++;
+    }
+
+  if (!locks_found)
+    return 0;
+
+  getimeofday (&now, NULL);
+  timersub (&now, &l->last_stale_purge, &dif);
+
+  if (dif.tv_sec > STALE_CHECK_INTERVAL)
+    {
+      lockfile_remove_stale (l->locks_to_check);
+      l->last_stale_purge = now;
+    }
+
+  return 1;
+}
+
+Serial_lock void
+serial_lock_free (Serial_lock * l)
+{
+  if (!l)
+    return;
+
+  if (l->locks_held)
+    {
+      lockfile_unlock (l->locks_held);
+      filelist_free (l->locks_held);
+    }
+
+  if (l->locks_to_check)
+    {
+      filelist_free (l->locks_to_check);
+    }
+
+  free (l);
+}
+
+
+Serial_lock *
+serial_lock_new (char *dev, int mode)
+{
+  Filelist *fl = lockfile_make_list (dev);
+
+  if (!fl)
+    return NULL;
+
+  l->mode = mode;
+  l->locks_to_check = fl;
+  l->locks_held = NULL;
+  memset (&l->last_stale_purge, 0, sizeof (l->last_stale_purge));
+
+  if (mode == SERIAL_LOCK_PASSIVE)
+    return l;
+
+  l->locks_held = lockfile_lock (l->locks_to_check);
+  if (!l->locks_held)
+    {
+      serial_lock_free (l);
+      return NULL;
+    }
+
+  return l;
+}
+
+
 #if 1
 int
 main (int argc, char *argv[])
diff --git a/src/lockfile.h b/src/lockfile.h
index c8b77f2..71cff4a 100644
--- a/src/lockfile.h
+++ b/src/lockfile.h
@@ -12,6 +12,9 @@
 
 /*
  * $Log$
+ * Revision 1.4  2008/02/15 19:51:30  james
+ * *** empty log message ***
+ *
  * Revision 1.3  2008/02/15 18:16:36  james
  * *** empty log message ***
  *
@@ -37,4 +40,16 @@ typedef struct {
 	Filelist_ent *head;
 } Filelist;
 
+
+typedef struct
+{
+  int mode;
+  int i;
+  struct timeval last_stale_purge;
+  Filelist locks_to_check;
+  Filelist locks_held;
+} Serial_lock;
+
+
+
 #endif /* __LOCKFILE_H__ */
diff --git a/src/prototypes.h b/src/prototypes.h
index f528ef2..f818c88 100644
--- a/src/prototypes.h
+++ b/src/prototypes.h
@@ -119,6 +119,9 @@ extern int ipc_msg_send_vt102(Socket *s, VT102 *v);
 extern int ipc_msg_send_key(Socket *s, int key);
 extern int ipc_msg_send_term(Socket *s, void *buf, int len);
 extern int ipc_msg_send_status(Socket *s, char *buf);
+extern int ipc_msg_send_setbaud(Socket *s, int baud);
+extern int ipc_msg_send_sendbreak(Socket *s);
+extern int ipc_msg_send_setflow(Socket *s, int flow);
 /* slide.c */
 extern void slide_free(Slide *s);
 extern void slide_consume(Slide *s, int n);
@@ -135,11 +138,7 @@ extern void socket_pre_select(Socket *s, fd_set *rfds, fd_set *wfds);
 extern int socket_post_select(Socket *s, fd_set *rfds, fd_set *wfds);
 extern int socket_write(Socket *s, void *buf, int len);
 /* serial.c */
-extern int make_lockfile(char *name);
-extern void construct_lock_file_name_by_name(char *ptr);
-extern void construct_lock_file_name_by_device(dev_t dev);
-extern int construct_possible_lock_files(char *device);
-extern TTY *serial_open(char *path);
+extern TTY *serial_open(char *path, int lock_mode);
 /* cmd.c */
 extern void cmd_parse(Cmd *c, Context *ctx, char *buf);
 extern void cmd_show_status(Cmd *c, Context *ctx);
@@ -147,3 +146,23 @@ extern int cmd_key(Cmd *c, Context *ctx, int key);
 extern int cmd_activate(Cmd *c, Context *ctx);
 extern void cmd_new_status(Cmd *c, Context *ctx, char *msg);
 extern Cmd *cmd_new(void);
+/* lockfile.c */
+extern Filelist *filelist_new(void);
+extern void filelist_remove(Filelist *fl, Filelist_ent *fle);
+extern void filelist_add(Filelist *fl, char *fn);
+extern void filelist_free(Filelist *fl);
+extern void filelist_print(Filelist *fl, FILE *f);
+extern int lockfile_make(char *name);
+extern void lockfile_add_places(Filelist *fl, char *leaf);
+extern void lockfile_regularize_and_add(Filelist *fl, char *leaf);
+extern void lockfile_add_name_from_path(Filelist *fl, char *file);
+extern void lockfile_add_name_from_dev(Filelist *fl, dev_t dev);
+extern void lockfile_check_dir_for_dev(Filelist *fl, char *dir, dev_t dev);
+extern Filelist *lockfile_make_list(char *device);
+extern void lockfile_remove_stale(Filelist *fl);
+extern Filelist *lockfile_lock(Filelist *fl);
+extern void lockfile_unlock(Filelist *fl);
+extern int serial_lock_check(Serial_lock *l);
+extern Serial_lock void serial_lock_free(Serial_lock *l);
+extern Serial_lock *serial_lock_new(char *dev, int mode);
+extern int main(int argc, char *argv[]);
diff --git a/src/serial.c b/src/serial.c
index dbd8206..2e67d3d 100644
--- a/src/serial.c
+++ b/src/serial.c
@@ -10,6 +10,9 @@ static char rcsid[] = "$Id$";
 
 /*
  * $Log$
+ * Revision 1.6  2008/02/15 19:51:30  james
+ * *** empty log message ***
+ *
  * Revision 1.5  2008/02/15 19:09:00  james
  * *** empty log message ***
  *
@@ -60,31 +63,14 @@ static char rcsid[] = "$Id$";
 #include <sys/stat.h>
 
 
-
-typedef struct
-{
-  int mode;
-  int i;
-
-  struct timeval last_stale_purge;
-  Filelist locks_to_check;
-  Filelist locks_held;
-} Serial_lock;
-
 typedef struct
 {
   TTY_SIGNATURE;
-  Serial_lock lock;
+  Serial_lock *lock;
   int fd;
 } Serial;
 
 
-static void
-serial_check_lock (Serial * t)
-{
-}
-
-
 static void
 serial_close (TTY * _t)
 {
@@ -98,14 +84,14 @@ serial_close (TTY * _t)
 }
 
 
-
 static int
 serial_read (TTY * _t, void *buf, int len)
 {
   Serial *t = (Serial *) _t;
   int red, done = 0;
 
-  serial_check_lock (t);
+  t->blocked = serial_lock_check (t->lock);
+
   if (t->blocked)
     return 0;
 
@@ -135,7 +121,7 @@ ptty_write (TTY * _t, void *buf, int len)
   int writ, done = 0;
   Serial *t = (Serial *) _t;
 
-  serial_check_lock (t);
+  t->blocked = serial_lock_check (t->lock);
   if (t->blocked)
     return 0;
 
@@ -159,7 +145,7 @@ ptty_write (TTY * _t, void *buf, int len)
 }
 
 TTY *
-serial_open (char *path)
+serial_open (char *path, int lock_mode)
 {
   Serial *t;
   pid_t child;
@@ -167,7 +153,11 @@ serial_open (char *path)
   struct winsize winsize = { 0 };
   struct termios termios;
   int fd;
+  Serial_lock *l;
 
+  l = serial_lock_new (path, lock_mode);
+  if (!l)
+    return NULL;
 
   default_termios (&termios);
 
@@ -177,6 +167,8 @@ serial_open (char *path)
 
   t = (Serial *) malloc (sizeof (Serial));
 
+  t->lock = l;
+
   strncpy (t->name, path, sizeof (t->name));
   t->name[sizeof (t->name) - 1] = 0;
 
@@ -188,7 +180,7 @@ serial_open (char *path)
   t->wfd = t->fd;
   t->size.x = VT102_COLS;
   t->size.y = VT102_ROWS;
-  t->blocked = 0;
+  t->blocked = serial_lock_check (t->lock);
 
   return (TTY *) t;
 }
-- 
cgit v1.2.3