Updated and cleaned the -B compressed limit.

[dump.git] / dump / tape.c

diff --git a/dump/tape.c b/dump/tape.c
index 984fe07fdde4e80965c1e8321571119cb6419a01..5e79fd2f66a7abac0c70d893a186d21928c1b71c 100644 (file)
--- a/dump/tape.c
+++ b/dump/tape.c
@@ -41,7 +41,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-       "$Id: tape.c,v 1.49 2001/07/18 09:50:48 stelian Exp $";
+       "$Id: tape.c,v 1.53 2001/07/20 11:02:45 stelian Exp $";
 #endif /* not lint */
 
 #include <config.h>
@@ -52,6 +52,7 @@ static const char rcsid[] =
 #include <signal.h>
 #include <stdio.h>
 #include <compaterr.h>
+#include <system.h>
 #ifdef __STDC__
 #include <stdlib.h>
 #include <string.h>
@@ -111,12 +112,11 @@ long long tapea_bytes = 0;        /* bytes_written at start of current volume */
 
 static ssize_t atomic_read __P((int, void *, size_t));
 static ssize_t atomic_write __P((int, const void *, size_t));
-static void doslave __P((int, int));
+static void doslave __P((int, int, int));
 static void enslave __P((void));
 static void flushtape __P((void));
 static void killall __P((void));
 static void rollforward __P((void));
-static int system_command __P((const char *, const char *, int));
 
 /*
  * Concurrent dump mods (Caltech) - disk block reading and tape writing
@@ -443,12 +443,11 @@ flushtape(void)
        nextblock = slp->tblock;
        trecno = 0;
        asize += tenths + returned.clen / density;
-       csize += returned.clen;
        blockswritten += ntrec;
        blocksthisvol += ntrec;
        if (!pipeout && !unlimited) {
                if (blocksperfile) {
-                       if ( compressed ? csize >= blocksperfile * 1024
+                       if ( compressed ? (bytes_written - tapea_bytes + SLAVES * (writesize + sizeof(struct tapebuf))) >= blocksperfile * 1024
                                        : blocksthisvol >= blocksperfile ) {
                                close_rewind();
                                startnewtape(0);
@@ -462,48 +461,6 @@ flushtape(void)
        timeest();
 }
 
-/*
- * Executes the command in a shell.
- * Returns -1 if an error occured, the exit status of
- * the command on success.
- */
-int system_command(const char *command, const char *device, int volnum) {
-       int pid, status;
-       char commandstr[4096];
-
-       pid = fork();
-       if (pid == -1) {
-               perror("  DUMP: unable to fork");
-               return -1;
-       }
-       if (pid == 0) {
-               setuid(getuid());
-               setgid(getgid());
-#if OLD_STYLE_FSCRIPT
-               snprintf(commandstr, sizeof(commandstr), "%s", command);
-#else
-               snprintf(commandstr, sizeof(commandstr), "%s %s %d", command, device, volnum);
-#endif
-               commandstr[sizeof(commandstr) - 1] = '\0';
-               execl("/bin/sh", "sh", "-c", commandstr, NULL);
-               perror("  DUMP: unable to execute shell");
-               exit(-1);
-       }
-       do {
-               if (waitpid(pid, &status, 0) == -1) {
-                       if (errno != EINTR) {
-                               perror("  DUMP: waitpid error");
-                               return -1;
-                       }
-               } else {
-                       if (WIFEXITED(status))
-                               return WEXITSTATUS(status);
-                       else
-                               return -1;
-               }
-       } while(1);
-}
-
 time_t
 trewind(void)
 {
@@ -735,7 +692,6 @@ rollforward(void)
        slp->count = lastspclrec + blks + 1 - spcl.c_tapea;
        slp->inode = curino;
        asize += tenths + returned.clen / density;
-       csize += returned.clen;
        blockswritten += ntrec;
        blocksthisvol += ntrec;
 #endif
@@ -892,7 +848,6 @@ restore_check_point:
                enslave();  /* Share open tape file descriptor with slaves */
 
                asize = 0;
-               csize = 0;
                blocksthisvol = 0;
                if (top)
                        newtape++;              /* new tape signal */
@@ -1010,7 +965,7 @@ enslave(void)
                            != sizeof i)
                                quit("master/slave protocol botched 3\n");
 #endif
-                       doslave(cmd[0], i);
+                       doslave(cmd[0], i, (slaves[i].pid == slp->pid));
                        Exit(X_FINOK);
                }
                else
@@ -1056,7 +1011,7 @@ killall(void)
  * slaves.
  */
 static void
-doslave(int cmd, int slave_number)
+doslave(int cmd, int slave_number, int first)
 {
        register int nread;
        int nextslave, size, eot_count, bufsize;
@@ -1064,7 +1019,7 @@ doslave(int cmd, int slave_number)
        char *buffer;
 #ifdef HAVE_ZLIB
        struct tapebuf *comp_buf = NULL;
-       int compresult, do_compress = slave_number > 0;
+       int compresult, do_compress = !first;
        unsigned long worklen;
 #endif /* HAVE_ZLIB */
        struct slave_results returns;
@@ -1188,7 +1143,8 @@ doslave(int cmd, int slave_number)
                        uspclptr = (union u_spcl *)&slp->tblock[0];
                        spclptr = &uspclptr->s_spcl;
                        if ((spclptr->c_magic == NFS_MAGIC) && 
-                           (spclptr->c_type == TS_INODE)) {
+                           (spclptr->c_type == TS_INODE) &&
+                           (spclptr->c_date == gThisDumpDate)) {
                                /* if an error occured previously don't
                                 * try again */
                                if (gtperr == 0) {