QFA support.

[dump.git] / dump / tape.c

diff --git a/dump/tape.c b/dump/tape.c
index 890c77b8e3ed6f93d53412706ddd09fe56e2a15e..8c62acb487131841c6ac2db4bdfc01fa627efed5 100644 (file)
--- a/dump/tape.c
+++ b/dump/tape.c
@@ -41,7 +41,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-       "$Id: tape.c,v 1.40 2001/03/28 12:59:48 stelian Exp $";
+       "$Id: tape.c,v 1.41 2001/04/10 12:46:53 stelian Exp $";
 #endif /* not lint */
 
 #include <config.h>
@@ -68,6 +68,7 @@ int    write(), read();
 #include <sys/socket.h>
 #include <sys/time.h>
 #include <sys/wait.h>
+#include <sys/mtio.h>
 #ifdef __linux__
 #include <linux/ext2_fs.h>
 #include <ext2fs/ext2fs.h>
@@ -158,6 +159,9 @@ static int ready;   /* have we reached the lock point without having */
                        /* received the SIGUSR2 signal from the prev slave? */
 static sigjmp_buf jmpbuf;      /* where to jump to if we are ready when the */
                        /* SIGUSR2 arrives from the previous slave */
+#ifdef USE_QFA
+static int gtperr = 0;
+#endif
 
 int
 alloctape(void)
@@ -860,7 +864,7 @@ restore_check_point:
                        open(tape, O_WRONLY|O_CREAT, 0666))) < 0)
 #else
                while ((tapefd = (pipeout ? fileno(stdout) :
-                                 open(tape, O_WRONLY|O_CREAT, 0666))) < 0)
+                                 open(tape, O_RDWR|O_CREAT, 0666))) < 0)
 #endif
                    {
                        msg("Cannot open output \"%s\".\n", tape);
@@ -1046,6 +1050,11 @@ doslave(int cmd, int slave_number)
 #ifdef __linux__
        errcode_t retval;
 #endif
+#ifdef USE_QFA
+       long curtapepos;
+       union u_spcl *uspclptr;
+       struct s_spcl *spclptr;
+#endif /* USA_QFA */
 
        /*
         * Need our own seek pointer.
@@ -1097,6 +1106,29 @@ doslave(int cmd, int slave_number)
                        }
                }
 
+#ifdef USE_QFA
+               if (gTapeposfd >= 0) {
+                       uspclptr = (union u_spcl *)&slp->tblock[0];
+                       spclptr = &uspclptr->s_spcl;
+                       if ((spclptr->c_magic == NFS_MAGIC) && 
+                           (spclptr->c_type == TS_INODE)) {
+                               /* if an error occured previously don't
+                                * try again */
+                               if (gtperr == 0) {
+                                       if ((gtperr = GetTapePos(&curtapepos)) == 0) {
+#ifdef DEBUG_QFA
+                                               msg("inode %ld at tapepos %ld\n", spclptr->c_inumber, curtapepos);
+#endif
+                                               sprintf(gTps, "%ld\t%d\t%ld\n", (unsigned long)spclptr->c_inumber, tapeno, curtapepos);
+                                               if (write(gTapeposfd, gTps, strlen(gTps)) != strlen(gTps)) {
+                                                       quit("error writing tapepos file.\n");
+                                               }
+                                       }
+                               }
+                       }
+               }
+#endif /* USE_QFA */
+                                               
                /* Try to write the data... */
                wrote = 0;
                eot_count = 0;
@@ -1240,3 +1272,24 @@ atomic_write(int fd, const void *buf, size_t count)
        } while (got == -1 && errno == EINTR);
        return (got < 0 ? got : count - need);
 }
+
+
+#ifdef USE_QFA
+/*
+ * read the current tape position
+ */
+int
+GetTapePos(long *pos)
+{
+       int err = 0;
+
+       *pos = 0;
+       if (ioctl(tapefd, MTIOCPOS, pos) == -1) {
+               err = errno;
+               msg("[%ld] error: %d (getting tapepos: %ld)\n", getpid(), 
+                       err, *pos);
+               return err;
+       }
+       return err;
+}
+#endif /* USE_QFA */