'S' size estimation option to dump.

[dump.git] / dump / main.c

diff --git a/dump/main.c b/dump/main.c
index 5e8f79f2a45bb7fe19b889456191453cb09acd55..263945a2543d05c692ed274d4d1a321c592cf88c 100644 (file)
--- a/dump/main.c
+++ b/dump/main.c
@@ -40,7 +40,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-       "$Id: main.c,v 1.8 1999/11/21 16:01:47 tiniou Exp $";
+       "$Id: main.c,v 1.9 1999/11/22 19:08:50 tiniou Exp $";
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -94,6 +94,7 @@ int   dokerberos = 0; /* Use Kerberos authentication */
 long   dev_bsize = 1;  /* recalculated below */
 long   blocksperfile;  /* output blocks per file */
 char   *host = NULL;   /* remote host (if any) */
+int    sizest = 0;     /* return size estimate only */
 
 #ifdef __linux__
 char   *__progname;
@@ -151,9 +152,9 @@ main(int argc, char *argv[])
 
        obsolete(&argc, &argv);
 #ifdef KERBEROS
-#define optstring "0123456789aB:b:cd:f:h:kL:Mns:T:uWw"
+#define optstring "0123456789aB:b:cd:f:h:kL:Mns:ST:uWw"
 #else
-#define optstring "0123456789aB:b:cd:f:h:L:Mns:T:uWw"
+#define optstring "0123456789aB:b:cd:f:h:L:Mns:ST:uWw"
 #endif
        while ((ch = getopt(argc, argv, optstring)) != -1)
 #undef optstring
@@ -237,6 +238,10 @@ main(int argc, char *argv[])
                        tsize = numarg("tape size", 1L, 0L) * 12 * 10;
                        break;
 
+               case 'S':
+                       sizest = 1;     /* return size estimate only */
+                       break;
+
                case 'T':               /* time of last dump */
                        spcl.c_ddate = unctime(optarg);
                        if (spcl.c_ddate < 0) {
@@ -402,26 +407,30 @@ main(int argc, char *argv[])
                strncpy(tape, tapeprefix, NAME_MAX);
        tape[NAME_MAX - 1] = '\0';
 
-       msg("Date of this level %c dump: %s", level,
+       if (!sizest) {
+
+               msg("Date of this level %c dump: %s", level,
 #ifdef __linux__
-               spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
+                       spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
 #else
-               spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
+                       spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
 #endif
-       msg("Date of last level %c dump: %s", lastlevel,
+               msg("Date of last level %c dump: %s", lastlevel,
 #ifdef __linux__
-               spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
+                       spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
 #else
-               spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
+                       spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
 #endif
-       msg("Dumping %s ", disk);
-       if (dt != NULL)
-               msgtail("(%s) ", dt->fs_file);
-       if (host)
-               msgtail("to %s on host %s\n", tape, host);
-       else
-               msgtail("to %s\n", tape);
-       msg("Label: %s\n", labelstr);
+               msg("Dumping %s ", disk);
+               if (dt != NULL)
+                       msgtail("(%s) ", dt->fs_file);
+               if (host)
+                       msgtail("to %s on host %s\n", tape, host);
+               else
+                       msgtail("to %s\n", tape);
+               msg("Label: %s\n", labelstr);
+
+       } /* end of size estimate */
 
 #ifdef __linux__
        retval = dump_fs_open(disk, &fs);
@@ -487,7 +496,8 @@ main(int argc, char *argv[])
        (void)signal(SIGINFO, statussig);
 #endif
 
-       msg("mapping (Pass I) [regular files]\n");
+       if (!sizest)
+               msg("mapping (Pass I) [regular files]\n");
 #ifdef __linux__
        if (directory[0] == 0)
                anydirskipped = mapfiles(maxino, &tapesize);
@@ -497,11 +507,17 @@ main(int argc, char *argv[])
        anydirskipped = mapfiles(maxino, &tapesize);
 #endif
 
-       msg("mapping (Pass II) [directories]\n");
+       if (!sizest)
+               msg("mapping (Pass II) [directories]\n");
        while (anydirskipped) {
                anydirskipped = mapdirs(maxino, &tapesize);
        }
 
+       if (sizest) {
+               printf("%ld\n", tapesize + 10);
+               exit(X_STARTUP);
+       } /* stop here for size estimate */
+
        if (pipeout || unlimited) {
                tapesize += 10; /* 10 trailer blocks */
                msg("estimated %ld tape blocks.\n", tapesize);
@@ -666,7 +682,7 @@ usage(void)
 #ifdef KERBEROS
                "k"
 #endif
-               "Mnu] [-B records] [-b blocksize] [-d density]\n"
+               "MnSu] [-B records] [-b blocksize] [-d density]\n"
                "\t%s [-f file] [-h level] [-s feet] [-T date] filesystem\n"
                "\t%s [-W | -w]\n", __progname, white, __progname);
        exit(X_STARTUP);