force loader to round up files to BLKSIZE size, so that 4K/512 file systems work

SCCS-vsn: old/ld/ld.c 4.6

diff --git a/usr/src/old/ld/ld.c b/usr/src/old/ld/ld.c
index 6e3f960..6dc2893 100644 (file)
--- a/usr/src/old/ld/ld.c
+++ b/usr/src/old/ld/ld.c
@@ -1,4 +1,4 @@
-static char sccsid[] = "@(#)ld.c 4.5 %G%";
+static char sccsid[] = "@(#)ld.c 4.6 %G%";

 
 /*
  * ld - string table version for VAX
 
 /*
  * ld - string table version for VAX


@@ -496,11 +496,28 @@ htoi(p)
 
 delexit()
 {
 
 delexit()
 {

+       struct stat stbuf;
+       long size;
+       char c = 0;

 
        bflush();
        unlink("l.out");
        if (delarg==0 && Aflag==0)
                chmod(ofilename, ofilemode);
 
        bflush();
        unlink("l.out");
        if (delarg==0 && Aflag==0)
                chmod(ofilename, ofilemode);

+       /*
+        * We have to insure that the last block of the data segment
+        * is allocated a full BLKSIZE block. If the underlying
+        * file system allocates frags that are smaller than BLKSIZE,
+        * a full zero filled BLKSIZE block needs to be allocated so 
+        * that when it is demand paged, the paged in block will be 
+        * appropriately filled with zeros.
+        */
+       fstat(biofd, &stbuf);
+       size = round(stbuf.st_size, BLKSIZE);
+       if (size > stbuf.st_size) {
+               lseek(biofd, size - 1, 0);
+               write(biofd, &c, 1);
+       }

        exit (delarg);
 }
 
        exit (delarg);
 }