Changeset 212 for trunk/src/slib.c

Timestamp:

Feb 17, 2009, 10:37:42 PM (16 years ago)

Author:

katerina

Message:

Lock baseline database (ticket #139) and allow list as input for PortCheckInterface (ticket #140).

File:

• trunk/src/slib.c (modified) (1 diff)

trunk/src/slib.c

@@ -2152 +2152 @@
 }
 
+int sl_lock (SL_TICKET ticket)
+{
+  int fd;
+  struct flock lock;
+  int retval;
+ 
+  SL_ENTER(_("sl_lock"));
+
+  if (SL_ISERROR(fd = get_the_fd (ticket)))
+    SL_IRETURN(fd, _("sl_lock"));
+
+  lock.l_type   = F_WRLCK;
+  lock.l_whence = SEEK_SET;
+  lock.l_start  = 0;
+  lock.l_len    = 0;
+
+  /* F_SETLK returns if the lock cannot be obtained */
+  do {
+    retval = fcntl(fd, F_SETLK, &lock);
+  } while (retval < 0 && errno == EINTR);
+
+  if (retval < 0 && errno == EBADF)
+    SL_IRETURN(SL_ETICKET, _("sl_lock"));
+  else if (retval < 0)
+    SL_IRETURN(SL_EBADFILE, _("sl_lock"));
+  else
+    SL_IRETURN(SL_ENONE, _("sl_lock"));
+ }
+ 
 int sl_close (SL_TICKET ticket) 
 {