Re: dump(8) SEGVs in searchdir() on 7.4-stable

[Otto Moerbeek]

This diff checks the allocations if a few pretty big tables.

        -Otto

Index: main.c
===================================================================
RCS file: /home/cvs/src/sbin/dump/main.c,v
diff -u -p -r1.63 main.c
--- main.c      2 Jun 2022 15:35:55 -0000       1.63
+++ main.c      17 Dec 2023 20:30:45 -0000
@@ -465,6 +465,9 @@ main(int argc, char *argv[])
        usedinomap = calloc((unsigned) mapsize, sizeof(char));
        dumpdirmap = calloc((unsigned) mapsize, sizeof(char));
        dumpinomap = calloc((unsigned) mapsize, sizeof(char));
+       if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
+               quit("Failed to allocate tables");
+
        tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
 
        nonodump = spcl.c_level < honorlevel;