Author: obrien
Date: Tue Dec 30 00:57:39 2008
New Revision: 186581
URL: http://svn.freebsd.org/changeset/base/186581

Log:
  Sound less scary about errorousous disk geometry due to wanting to limit
  to 65535 cylinders.
  
  Submitted by: Carlos A. M. dos Santos <unixma...@gmail.com>

Modified:
  head/usr.sbin/sade/disks.c
  head/usr.sbin/sysinstall/disks.c
  head/usr.sbin/sysinstall/sysinstall.8

Modified: head/usr.sbin/sade/disks.c
==============================================================================
--- head/usr.sbin/sade/disks.c  Tue Dec 30 00:50:25 2008        (r186580)
+++ head/usr.sbin/sade/disks.c  Tue Dec 30 00:57:39 2008        (r186581)
@@ -103,6 +103,47 @@ record_chunks(Disk *d)
 static daddr_t Total;
 
 static void
+check_geometry(Disk *d)
+{
+    int sg;
+
+#ifdef PC98
+    if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256)
+#else
+    if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64)
+#endif
+    {
+       dialog_clear_norefresh();
+       sg = msgYesNo("WARNING:  It is safe to use a geometry of %lu/%lu/%lu 
for %s on\n"
+                     "computers with modern BIOS versions.  If this disk is to 
be used\n"
+                     "on rather old machines, however, it is recommended to 
ensure that\n"
+                     "it does not have more than 65535 cylinders, or more than 
255 heads\n"
+                     "or more than "
+#ifdef PC98
+                     "255"
+#else
+                     "63"
+#endif
+                     " sectors per track.\n"
+                     "\n"
+                     "Would you like that to keep using the current 
geometry?\n",
+                     d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
+       if (sg == 1) {
+           Sanitize_Bios_Geom(d);
+           msgConfirm("A geometry of %lu/%lu/%lu was calculated for %s.\n"
+                      "\n"
+                      "If you are not sure about this, please consult the 
Hardware Guide\n"
+                      "in the Documentation submenu or use the (G)eometry 
command to\n"
+                      "change it.  Remember: you need to enter whatever your 
BIOS thinks\n"
+                      "the geometry is!  For IDE, it's what you were told in 
the BIOS\n"
+                      "setup.  For SCSI, it's the translation mode your 
controller is\n"
+                      "using.  Do NOT use a ``physical geometry''.\n",
+                      d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
+       }
+    }
+}
+
+static void
 print_chunks(Disk *d, int u)
 {
     int row;
@@ -116,26 +157,6 @@ print_chunks(Disk *d, int u)
     Total = 0;
     for (i = 0; chunk_info[i]; i++)
        Total += chunk_info[i]->size;
-#ifdef PC98
-    if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256) {
-#else
-    if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64) {
-#endif
-       dialog_clear_norefresh();
-       msgConfirm("WARNING:  A geometry of %lu/%lu/%lu for %s is incorrect.  
Using\n"
-                  "a more likely geometry.  If this geometry is incorrect or 
you\n"
-                  "are unsure as to whether or not it's correct, please 
consult\n"
-                  "the Hardware Guide in the Documentation submenu or use 
the\n"
-                  "(G)eometry command to change it now.\n\n"
-                  "Remember: you need to enter whatever your BIOS thinks the\n"
-                  "geometry is!  For IDE, it's what you were told in the 
BIOS\n"
-                  "setup. For SCSI, it's the translation mode your controller 
is\n"
-                  "using.  Do NOT use a ``physical geometry''.",
-         d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
-       Sanitize_Bios_Geom(d);
-       msgDebug("Sanitized geometry for %s is %lu/%lu/%lu.\n",
-           d->name, d->bios_cyl, d->bios_hd, d->bios_sect);
-    }
     attrset(A_NORMAL);
     mvaddstr(0, 0, "Disk name:\t");
     clrtobot();
@@ -339,6 +360,9 @@ diskPartition(Device *dev)
     /* Set up the chunk array */
     record_chunks(d);
 
+    /* Give the user a chance to sanitize the disk geometry, if necessary */
+    check_geometry(d);
+
     while (chunking) {
        char *val, geometry[80];
            
@@ -909,22 +933,25 @@ diskPartitionNonInteractive(Device *dev)
     record_chunks(d);
     cp = variable_get(VAR_GEOMETRY);
     if (cp) {
-       msgDebug("Setting geometry from script to: %s\n", cp);
-       d->bios_cyl = strtol(cp, &cp, 0);
-       d->bios_hd = strtol(cp + 1, &cp, 0);
-       d->bios_sect = strtol(cp + 1, 0, 0);
-    }
-
+       if (!strcasecmp(cp, "sane")) {
 #ifdef PC98
-    if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256) {
+           if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256)
 #else
-    if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64) {
+           if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64)
 #endif
-       msgDebug("Warning:  A geometry of %lu/%lu/%lu for %s is incorrect.\n",
-           d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
-       Sanitize_Bios_Geom(d);
-       msgDebug("Sanitized geometry for %s is %lu/%lu/%lu.\n",
-           d->name, d->bios_cyl, d->bios_hd, d->bios_sect);
+           {
+               msgDebug("Warning:  A geometry of %lu/%lu/%lu for %s is 
incorrect.\n",
+                   d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
+               Sanitize_Bios_Geom(d);
+               msgDebug("Sanitized geometry for %s is %lu/%lu/%lu.\n",
+                   d->name, d->bios_cyl, d->bios_hd, d->bios_sect);
+           }
+       } else {
+           msgDebug("Setting geometry from script to: %s\n", cp);
+           d->bios_cyl = strtol(cp, &cp, 0);
+           d->bios_hd = strtol(cp + 1, &cp, 0);
+           d->bios_sect = strtol(cp + 1, 0, 0);
+       }
     }
 
     cp = variable_get(VAR_PARTITION);

Modified: head/usr.sbin/sysinstall/disks.c
==============================================================================
--- head/usr.sbin/sysinstall/disks.c    Tue Dec 30 00:50:25 2008        
(r186580)
+++ head/usr.sbin/sysinstall/disks.c    Tue Dec 30 00:57:39 2008        
(r186581)
@@ -106,6 +106,47 @@ record_chunks(Disk *d)
 static daddr_t Total;
 
 static void
+check_geometry(Disk *d)
+{
+    int sg;
+
+#ifdef PC98
+    if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256)
+#else
+    if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64)
+#endif
+    {
+       dialog_clear_norefresh();
+       sg = msgYesNo("WARNING:  It is safe to use a geometry of %lu/%lu/%lu 
for %s on\n"
+                     "computers with modern BIOS versions.  If this disk is to 
be used\n"
+                     "on rather old machines, however, it is recommended to 
ensure that\n"
+                     "it does not have more than 65535 cylinders, or more than 
255 heads\n"
+                     "or more than "
+#ifdef PC98
+                     "255"
+#else
+                     "63"
+#endif
+                     " sectors per track.\n"
+                     "\n"
+                     "Would you like that to keep using the current 
geometry?\n",
+                     d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
+       if (sg == 1) {
+           Sanitize_Bios_Geom(d);
+           msgConfirm("A geometry of %lu/%lu/%lu was calculated for %s.\n"
+                      "\n"
+                      "If you are not sure about this, please consult the 
Hardware Guide\n"
+                      "in the Documentation submenu or use the (G)eometry 
command to\n"
+                      "change it.  Remember: you need to enter whatever your 
BIOS thinks\n"
+                      "the geometry is!  For IDE, it's what you were told in 
the BIOS\n"
+                      "setup.  For SCSI, it's the translation mode your 
controller is\n"
+                      "using.  Do NOT use a ``physical geometry''.\n",
+                      d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
+       }
+    }
+}
+
+static void
 print_chunks(Disk *d, int u)
 {
     int row;
@@ -119,24 +160,6 @@ print_chunks(Disk *d, int u)
     Total = 0;
     for (i = 0; chunk_info[i]; i++)
        Total += chunk_info[i]->size;
-#ifdef PC98
-    if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256) {
-#else
-    if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64) {
-#endif
-       dialog_clear_norefresh();
-       msgConfirm("WARNING:  A geometry of %lu/%lu/%lu for %s is incorrect.  
Using\n"
-                  "a more likely geometry.  If this geometry is incorrect or 
you\n"
-                  "are unsure as to whether or not it's correct, please 
consult\n"
-                  "the Hardware Guide in the Documentation submenu or use 
the\n"
-                  "(G)eometry command to change it now.\n\n"
-                  "Remember: you need to enter whatever your BIOS thinks the\n"
-                  "geometry is!  For IDE, it's what you were told in the 
BIOS\n"
-                  "setup. For SCSI, it's the translation mode your controller 
is\n"
-                  "using.  Do NOT use a ``physical geometry''.",
-         d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
-       Sanitize_Bios_Geom(d);
-    }
     attrset(A_NORMAL);
     mvaddstr(0, 0, "Disk name:\t");
     clrtobot();
@@ -341,6 +364,9 @@ diskPartition(Device *dev)
     /* Set up the chunk array */
     record_chunks(d);
 
+    /* Give the user a chance to sanitize the disk geometry, if necessary */
+    check_geometry(d);
+
     while (chunking) {
        char *val, geometry[80];
            
@@ -916,21 +942,24 @@ diskPartitionNonInteractive(Device *dev)
     record_chunks(d);
     cp = variable_get(VAR_GEOMETRY);
     if (cp) {
-       msgDebug("Setting geometry from script to: %s\n", cp);
-       d->bios_cyl = strtol(cp, &cp, 0);
-       d->bios_hd = strtol(cp + 1, &cp, 0);
-       d->bios_sect = strtol(cp + 1, 0, 0);
-    } else {
+       if (!strcasecmp(cp, "sane")) {
 #ifdef PC98
-       if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256) {
+           if (d->bios_cyl >= 65536 || d->bios_hd > 256 || d->bios_sect >= 256)
 #else
-       if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64) {
+           if (d->bios_cyl > 65536 || d->bios_hd > 256 || d->bios_sect >= 64)
 #endif
-           msgDebug("Warning:  A geometry of %lu/%lu/%lu for %s is 
incorrect.\n",
-               d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
-           Sanitize_Bios_Geom(d);
-           msgDebug("Sanitized geometry for %s is %lu/%lu/%lu.\n",
-               d->name, d->bios_cyl, d->bios_hd, d->bios_sect);
+           {
+               msgDebug("Warning:  A geometry of %lu/%lu/%lu for %s is 
incorrect.\n",
+                   d->bios_cyl, d->bios_hd, d->bios_sect, d->name);
+               Sanitize_Bios_Geom(d);
+               msgDebug("Sanitized geometry for %s is %lu/%lu/%lu.\n",
+                   d->name, d->bios_cyl, d->bios_hd, d->bios_sect);
+           }
+       } else {
+           msgDebug("Setting geometry from script to: %s\n", cp);
+           d->bios_cyl = strtol(cp, &cp, 0);
+           d->bios_hd = strtol(cp + 1, &cp, 0);
+           d->bios_sect = strtol(cp + 1, 0, 0);
        }
     }
 

Modified: head/usr.sbin/sysinstall/sysinstall.8
==============================================================================
--- head/usr.sbin/sysinstall/sysinstall.8       Tue Dec 30 00:50:25 2008        
(r186580)
+++ head/usr.sbin/sysinstall/sysinstall.8       Tue Dec 30 00:57:39 2008        
(r186581)
@@ -249,6 +249,12 @@ Invokes the disk partition (MBR) editor.
 .Bl -tag -width findx
 .It geometry
 The disk geometry, as a cyls/heads/sectors formatted string.
+The word "sane" instructs
+.Nm
+to calculate a safe (not necessarily optimal) geometry if the
+current one has more than 65535 cylinders, more than 256 heads or
+more than 63 sectors per track (255 sectors on the PC98
+architecture).
 Default: no
 change to geometry.
 .It partition
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