BSD 4_4 release

[unix-history] / usr / src / sbin / dump / itime.c

diff --git a/usr/src/sbin/dump/itime.c b/usr/src/sbin/dump/itime.c
index e3fa877..94656ac 100644 (file)
--- a/usr/src/sbin/dump/itime.c
+++ b/usr/src/sbin/dump/itime.c
@@ -1,131 +1,197 @@
-static char *sccsid = "@(#)itime.c     1.13 (Berkeley) %G%";
+/*-
+ * Copyright (c) 1980, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)itime.c    8.1 (Berkeley) 6/5/93";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#ifdef sunos
+#include <sys/vnode.h>
+
+#include <ufs/fsdir.h>
+#include <ufs/inode.h>
+#include <ufs/fs.h>
+#else
+#include <ufs/ufs/dinode.h>
+#endif
+
+#include <protocols/dumprestore.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#endif

 
 #include "dump.h"
 
 #include "dump.h"

-#include <sys/file.h>

 
 

-char *prdate(d)
-       time_t d;
+struct dumpdates **ddatev = 0;
+int    nddates = 0;
+int    ddates_in = 0;
+struct dumptime *dthead = 0;
+
+static void dumprecout __P((FILE *, struct dumpdates *));
+static int getrecord __P((FILE *, struct dumpdates *));
+static int makedumpdate __P((struct dumpdates *, char *));
+static void readdumptimes __P((FILE *));
+
+void
+initdumptimes()

 {
 {

-       char *p;
+       FILE *df;

 
 

-       if(d == 0)
-               return("the epoch");
-       p = ctime(&d);
-       p[24] = 0;
-       return(p);
+       if ((df = fopen(dumpdates, "r")) == NULL) {
+               if (errno != ENOENT) {
+                       quit("cannot read %s: %s\n", dumpdates,
+                           strerror(errno));
+                       /* NOTREACHED */
+               }
+               /*
+                * Dumpdates does not exist, make an empty one.
+                */
+               msg("WARNING: no file `%s', making an empty one\n", dumpdates);
+               if ((df = fopen(dumpdates, "w")) == NULL) {
+                       quit("cannot create %s: %s\n", dumpdates,
+                           strerror(errno));
+                       /* NOTREACHED */
+               }
+               (void) fclose(df);
+               if ((df = fopen(dumpdates, "r")) == NULL) {
+                       quit("cannot read %s even after creating it: %s\n",
+                           dumpdates, strerror(errno));
+                       /* NOTREACHED */
+               }
+       }
+       (void) flock(fileno(df), LOCK_SH);
+       readdumptimes(df);
+       (void) fclose(df);

 }
 
 }
 

-struct idates  **idatev = 0;
-int    nidates = 0;
-int    idates_in = 0;
-struct itime   *ithead = 0;
-
-inititimes()
+static void
+readdumptimes(df)
+       FILE *df;

 {
 {

-                       FILE    *df;
-       register        int     i;
-       register        struct  itime   *itwalk;
-                       int fd;
+       register int i;
+       register struct dumptime *dtwalk;

 
 

-       if (idates_in)
-               return;
-       fd = open(increm, O_RDONLY);
-       if (fd < 0) {
-               perror(increm);
-               return;
-       }
-       (void) flock(fd, LOCK_SH);
-       if ((df = fdopen(fd, "r")) == NULL) {
-               nidates = 0;
-               ithead = 0;
-       } else {
-               do{
-                       itwalk=(struct itime *)calloc(1,sizeof (struct itime));
-                       if (getrecord(df, &(itwalk->it_value)) < 0)
-                               break;
-                       nidates++;
-                       itwalk->it_next = ithead;
-                       ithead = itwalk;
-               } while (1);
-               fclose(df);
+       for (;;) {
+               dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
+               if (getrecord(df, &(dtwalk->dt_value)) < 0)
+                       break;
+               nddates++;
+               dtwalk->dt_next = dthead;
+               dthead = dtwalk;

        }
 
        }
 

-       idates_in = 1;
+       ddates_in = 1;

        /*
         *      arrayify the list, leaving enough room for the additional
        /*
         *      arrayify the list, leaving enough room for the additional

-        *      record that we may have to add to the idate structure
+        *      record that we may have to add to the ddate structure

         */
         */

-       idatev = (struct idates **)calloc(nidates + 1,sizeof (struct idates *));
-       for (i = nidates-1, itwalk = ithead; i >= 0; i--, itwalk = itwalk->it_next)
-               idatev[i] = &itwalk->it_value;
+       ddatev = (struct dumpdates **)
+               calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *));
+       dtwalk = dthead;
+       for (i = nddates - 1; i >= 0; i--, dtwalk = dtwalk->dt_next)
+               ddatev[i] = &dtwalk->dt_value;

 }
 
 }
 

-getitime()
+void
+getdumptime()

 {
 {

-       register        struct  idates  *ip;
-       register        int     i;
-                       char    *fname;
+       register struct dumpdates *ddp;
+       register int i;
+       char *fname;

 
        fname = disk;
 #ifdef FDEBUG
 
        fname = disk;
 #ifdef FDEBUG

-       msg("Looking for name %s in increm = %s for delta = %c\n",
-               fname, increm, incno);
+       msg("Looking for name %s in dumpdates = %s for level = %c\n",
+               fname, dumpdates, level);

 #endif
        spcl.c_ddate = 0;
 #endif
        spcl.c_ddate = 0;

-       lastincno = '0';
+       lastlevel = '0';

 
 

-       inititimes();
+       initdumptimes();

        /*
         *      Go find the entry with the same name for a lower increment
         *      and older date
         */
        /*
         *      Go find the entry with the same name for a lower increment
         *      and older date
         */

-       ITITERATE(i, ip){
-               if(strncmp(fname, ip->id_name,
-                               sizeof (ip->id_name)) != 0)
+       ITITERATE(i, ddp) {
+               if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)

                        continue;
                        continue;

-               if (ip->id_incno >= incno)
+               if (ddp->dd_level >= level)

                        continue;
                        continue;

-               if (ip->id_ddate <= spcl.c_ddate)
+               if (ddp->dd_ddate <= spcl.c_ddate)

                        continue;
                        continue;

-               spcl.c_ddate = ip->id_ddate;
-               lastincno = ip->id_incno;
-       } 
+               spcl.c_ddate = ddp->dd_ddate;
+               lastlevel = ddp->dd_level;
+       }

 }
 
 }
 

-putitime()
+void
+putdumptime()

 {
 {

-       FILE            *df;
-       register        struct  idates  *itwalk;
-       register        int     i;
-       int             fd;
-       char            *fname;
+       FILE *df;
+       register struct dumpdates *dtwalk;
+       register int i;
+       int fd;
+       char *fname;

 
        if(uflag == 0)
                return;
 
        if(uflag == 0)
                return;

-       fd = open(temp, O_RDWR|O_CREAT, 0600);
-       if (fd < 0) {
-               perror(temp);
-               dumpabort();
-       }
+       if ((df = fopen(dumpdates, "r+")) == NULL)
+               quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
+       fd = fileno(df);

        (void) flock(fd, LOCK_EX);
        (void) flock(fd, LOCK_EX);

-       if ((df = fdopen(fd, "w")) == NULL) {
-               perror(temp);
-               dumpabort();
-       }

        fname = disk;
        fname = disk;

-       free(idatev);
-       idatev = 0;
-       nidates = 0;
-       ithead = 0;
-       idates_in = 0;
-       inititimes();
-
+       free((char *)ddatev);
+       ddatev = 0;
+       nddates = 0;
+       dthead = 0;
+       ddates_in = 0;
+       readdumptimes(df);
+       if (fseek(df, 0L, 0) < 0)
+               quit("fseek: %s\n", strerror(errno));

        spcl.c_ddate = 0;
        spcl.c_ddate = 0;

-       ITITERATE(i, itwalk){
-               if (strncmp(fname, itwalk->id_name,
-                               sizeof (itwalk->id_name)) != 0)
+       ITITERATE(i, dtwalk) {
+               if (strncmp(fname, dtwalk->dd_name,
+                               sizeof (dtwalk->dd_name)) != 0)

                        continue;
                        continue;

-               if (itwalk->id_incno != incno)
+               if (dtwalk->dd_level != level)

                        continue;
                goto found;
        }
                        continue;
                goto found;
        }


@@ -133,125 +199,73 @@ putitime()
         *      construct the new upper bound;
         *      Enough room has been allocated.
         */
         *      construct the new upper bound;
         *      Enough room has been allocated.
         */

-       itwalk = idatev[nidates] =
-               (struct idates *)calloc(1, sizeof(struct idates));
-       nidates += 1;
+       dtwalk = ddatev[nddates] =
+               (struct dumpdates *)calloc(1, sizeof (struct dumpdates));
+       nddates += 1;

   found:
   found:

-       strncpy(itwalk->id_name, fname, sizeof (itwalk->id_name));
-       itwalk->id_incno = incno;
-       itwalk->id_ddate = spcl.c_date;
+       (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
+       dtwalk->dd_level = level;
+       dtwalk->dd_ddate = spcl.c_date;

 
 

-       ITITERATE(i, itwalk){
-               recout(df, itwalk);
-       }
-       if (rename(temp, increm) < 0) {
-               perror("rename");
-               (void) unlink(temp);
-               dumpabort();
+       ITITERATE(i, dtwalk) {
+               dumprecout(df, dtwalk);

        }
        }

-       (void) chmod(increm, 0644);
+       if (fflush(df))
+               quit("%s: %s\n", dumpdates, strerror(errno));
+       if (ftruncate(fd, ftell(df)))
+               quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));

        (void) fclose(df);
        (void) fclose(df);

-       msg("level %c dump on %s\n", incno, prdate(spcl.c_date));
+       msg("level %c dump on %s", level,
+               spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));

 }
 
 }
 

-recout(file, what)
-       FILE    *file;
-       struct  idates  *what;
+static void
+dumprecout(file, what)
+       FILE *file;
+       struct dumpdates *what;

 {
 {

-       fprintf(file, DUMPOUTFMT,
-               what->id_name,
-               what->id_incno,
-               ctime(&(what->id_ddate))
-       );
+
+       if (fprintf(file, DUMPOUTFMT,
+                   what->dd_name,
+                   what->dd_level,
+                   ctime(&what->dd_ddate)) < 0)
+               quit("%s: %s\n", dumpdates, strerror(errno));

 }
 
 int    recno;
 }
 
 int    recno;

-int getrecord(df, idatep)
-       FILE    *df;
-       struct  idates  *idatep;
+
+static int
+getrecord(df, ddatep)
+       FILE *df;
+       struct dumpdates *ddatep;

 {
 {

-       char            buf[BUFSIZ];
+       char tbuf[BUFSIZ];

 
        recno = 0;
 
        recno = 0;

-       if ( (fgets(buf, BUFSIZ, df)) != buf)
+       if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf)

                return(-1);
        recno++;
                return(-1);
        recno++;

-       if (makeidate(idatep, buf) < 0)
+       if (makedumpdate(ddatep, tbuf) < 0)

                msg("Unknown intermediate format in %s, line %d\n",
                msg("Unknown intermediate format in %s, line %d\n",

-                       increm, recno);
+                       dumpdates, recno);

 
 #ifdef FDEBUG
 
 #ifdef FDEBUG

-       msg("getrecord: %s %c %s\n",
-               idatep->id_name, idatep->id_incno, prdate(idatep->id_ddate));
+       msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
+           ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));

 #endif
        return(0);
 }
 
 #endif
        return(0);
 }
 

-time_t unctime();
-
-int makeidate(ip, buf)
-       struct  idates  *ip;
-       char    *buf;
+static int
+makedumpdate(ddp, tbuf)
+       struct dumpdates *ddp;
+       char *tbuf;

 {
 {

-       char    un_buf[128];
+       char un_buf[128];

 
 

-       sscanf(buf, DUMPINFMT, ip->id_name, &ip->id_incno, un_buf);
-       ip->id_ddate = unctime(un_buf);
-       if (ip->id_ddate < 0)
+       (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
+       ddp->dd_ddate = unctime(un_buf);
+       if (ddp->dd_ddate < 0)

                return(-1);
        return(0);
 }
                return(-1);
        return(0);
 }

-
-/*
- * This is an estimation of the number of TP_BSIZE blocks in the file.
- * It estimates the number of blocks in files with holes by assuming
- * that all of the blocks accounted for by di_blocks are data blocks
- * (when some of the blocks are usually used for indirect pointers);
- * hence the estimate may be high.
- */
-est(ip)
-       struct dinode *ip;
-{
-       long s, t;
-
-       /*
-        * ip->di_size is the size of the file in bytes.
-        * ip->di_blocks stores the number of sectors actually in the file.
-        * If there are more sectors than the size would indicate, this just
-        *      means that there are indirect blocks in the file or unused
-        *      sectors in the last file block; we can safely ignore these
-        *      (s = t below).
-        * If the file is bigger than the number of sectors would indicate,
-        *      then the file has holes in it.  In this case we must use the
-        *      block count to estimate the number of data blocks used, but
-        *      we use the actual size for estimating the number of indirect
-        *      dump blocks (t vs. s in the indirect block calculation).
-        */
-       esize++;
-       s = howmany(dbtob(ip->di_blocks), TP_BSIZE);
-       t = howmany(ip->di_size, TP_BSIZE);
-       if ( s > t )
-               s = t;
-       if (ip->di_size > sblock->fs_bsize * NDADDR) {
-               /* calculate the number of indirect blocks on the dump tape */
-               s += howmany(t - NDADDR * sblock->fs_bsize / TP_BSIZE,
-                       TP_NINDIR);
-       }
-       esize += s;
-}
-
-bmapest(map)
-       char *map;
-{
-       register i, n;
-
-       n = -1;
-       for (i = 0; i < msiz; i++)
-               if(map[i])
-                       n = i;
-       if(n < 0)
-               return;
-       n++;
-       esize++;
-       esize += howmany(n * sizeof map[0], TP_BSIZE);
-}