Made dump understand the LABEL= and UUID= notations.

[dump.git] / dump / main.c

diff --git a/dump/main.c b/dump/main.c
index 6addbb47cbc2bf8adce38f586ad31a8b5a231fc0..43c31168f070429dbb8f7a3d7830c15d6ec20e7b 100644 (file)
--- a/dump/main.c
+++ b/dump/main.c
@@ -40,7 +40,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-       "$Id: main.c,v 1.19 2000/03/02 13:33:00 stelian Exp $";
+       "$Id: main.c,v 1.24 2000/08/20 19:41:50 stelian Exp $";
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -79,6 +79,7 @@ static const char rcsid[] =
 
 #include "dump.h"
 #include "pathnames.h"
+#include "bylabel.h"
 
 #ifndef SBOFF
 #define SBOFF (SBLOCK * DEV_BSIZE)
@@ -126,6 +127,7 @@ main(int argc, char *argv[])
 #endif
        time_t tnow;
        char labelstr[LBLSIZE];
+       char *diskparam;
 
        spcl.c_date = 0;
 #ifdef __linux__
@@ -287,9 +289,9 @@ main(int argc, char *argv[])
                (void)fprintf(stderr, "Must specify disk or filesystem\n");
                exit(X_STARTUP);
        }
-       disk = *argv++;
-       if (strlen(disk) > MAXPATHLEN) {
-               (void)fprintf(stderr, "Disk or filesystem name too long: %s\n", disk);
+       diskparam = *argv++;
+       if (strlen(diskparam) >= MAXPATHLEN) {
+               (void)fprintf(stderr, "Disk or filesystem name too long: %s\n", diskparam);
                exit(X_STARTUP);
        }
        argc--;
@@ -363,6 +365,14 @@ main(int argc, char *argv[])
                signal(SIGINT, SIG_IGN);
        set_operators();        /* /etc/group snarfed */
        getfstab();             /* /etc/fstab snarfed */
+
+       disk = get_device_name(diskparam);
+       if (!disk) {            /* null means the disk is some form
+                                  of LABEL= or UID= but it was not
+                                  found */
+               msg("Cannot find a disk having %s\n", diskparam);
+               exit(X_STARTUP);
+       }
        /*
         *      disk may end in / and this can confuse
         *      fstabsearch.
@@ -393,7 +403,7 @@ main(int argc, char *argv[])
                if (dt != NULL) {
                        char name[MAXPATHLEN];
                        (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
-                       (void)sprintf(name, "%s (dir %s)",
+                       (void)snprintf(name, sizeof(name), "%s (dir %s)",
                                      dt->fs_file, directory);
                        (void)strncpy(spcl.c_filesys, name, NAMELEN);
                        disk = rawname(dt->fs_spec);
@@ -410,6 +420,17 @@ main(int argc, char *argv[])
                    NAMELEN);
        }
 #endif
+
+       if (directory[0] != 0) {
+               if (level != '0') {
+                       (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
+                       exit(X_STARTUP);
+               }
+               if (uflag) {
+                       (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
+                       exit(X_STARTUP);
+               }
+       }
        spcl.c_dev[NAMELEN-1]='\0';
        spcl.c_filesys[NAMELEN-1]='\0';
        (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
@@ -511,7 +532,7 @@ main(int argc, char *argv[])
        usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
        dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
        dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
-       tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
+       tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 
        nonodump = spcl.c_level < honorlevel;
 
@@ -537,12 +558,12 @@ main(int argc, char *argv[])
        }
 
        if (sizest) {
-               printf("%.0f\n", ((double)tapesize + 10) * TP_BSIZE);
+               printf("%.0f\n", ((double)tapesize + 11) * TP_BSIZE);
                exit(X_FINOK);
        } /* stop here for size estimate */
 
        if (pipeout || unlimited) {
-               tapesize += 10; /* 10 trailer blocks */
+               tapesize += 11; /* 10 trailer blocks + 1 map header */
                msg("estimated %ld tape blocks.\n", tapesize);
        } else {
                double fetapes;
@@ -664,10 +685,13 @@ main(int argc, char *argv[])
        tnow = trewind();
 
        if (pipeout)
-               msg("%ld tape blocks\n", spcl.c_tapea);
+               msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
+                       ((double)spcl.c_tapea * TP_BSIZE / 1048576));
        else
-               msg("%ld tape blocks on %d volumes(s)\n",
-                   spcl.c_tapea, spcl.c_volume);
+               msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
+                   spcl.c_tapea, 
+                   ((double)spcl.c_tapea * TP_BSIZE / 1048576),
+                   spcl.c_volume);
 
        /* report dump performance, avoid division through zero */
        if (tend_writing - tstart_writing == 0)