Package installation is handled by starting off with the list of packages

the user selected and then recursively installing their dependencies, finally
installing the ones the user selected after the recursion unwinds.  Since
users often select "high-level" packages that are on a higher numbered
disc for the multi-volume release CDROMS this resulted in excessive disc
swapping while installing things like kde, gnome, etc.

Cut down on disc swapping by iterating through the disc volumes one at a
time if we notice the package set is on multiple volumes.  If a package
is on a higher volume don't install it yet, but still "process it" so we
get its dependencies installed.  Because of the way the package sets for
releases get assembled we're guaranteed dependencies will be on the same
volume or lower.

Reviewed by:	jhb
MFC after:	1 week

5 files changed, 69 insertions, 9 deletions

diff --git a/usr.sbin/sysinstall/config.c b/usr.sbin/sysinstall/config.c
index bb7ffbc..e550f05 100644
--- a/usr.sbin/sysinstall/config.c
+++ b/usr.sbin/sysinstall/config.c
@@ -737,6 +737,7 @@ configPackages(dialogMenuItem *self)
 
     while (1) {
 	int ret, pos, scroll;
+	int current, low, high;
 
 	/* Bring up the packages menu */
 	pos = scroll = 0;
@@ -751,8 +752,14 @@ configPackages(dialogMenuItem *self)
 	    else if (DITEM_STATUS(ret) != DITEM_FAILURE) {
 		dialog_clear();
 		restoreflag = 1;
-		for (tmp = Plist.kids; tmp && tmp->name; tmp = tmp->next)
-		    (void)index_extract(mediaDevice, &Top, tmp, FALSE);
+		if (have_volumes) {
+		    low = low_volume;
+		    high = high_volume;
+		} else
+		    low = high = 0;
+		for (current = low; current <= high; current++)
+		    for (tmp = Plist.kids; tmp && tmp->name; tmp = tmp->next)
+		        (void)index_extract(mediaDevice, &Top, tmp, FALSE, current);
 		break;
 	    }
 	}
diff --git a/usr.sbin/sysinstall/globals.c b/usr.sbin/sysinstall/globals.c
index 892d852..9119c15 100644
--- a/usr.sbin/sysinstall/globals.c
+++ b/usr.sbin/sysinstall/globals.c
@@ -48,10 +48,13 @@ Boolean		DialogActive;	/* Is libdialog initialized? */
 Boolean		ColorDisplay;	/* Are we on a color display? */
 Boolean		OnVTY;		/* Are we on a VTY? */
 Boolean		Restarting;	/* Are we restarting sysinstall? */
+Boolean		have_volumes;	/* Media has more than one volume. */
 Variable	*VarHead;	/* The head of the variable chain */
 Device		*mediaDevice;	/* Where we're installing from */
 int		BootMgr;	/* Which boot manager we're using */
 int		StatusLine;	/* Where to stick our status messages */
+int		low_volume;	/* Lowest volume number */
+int		high_volume;	/* Highest volume number */
 jmp_buf		BailOut;	/* Beam me up, scotty! The natives are pissed! */
 
 Chunk		*HomeChunk;
diff --git a/usr.sbin/sysinstall/index.c b/usr.sbin/sysinstall/index.c
index a55b541..60e8160 100644
--- a/usr.sbin/sysinstall/index.c
+++ b/usr.sbin/sysinstall/index.c
@@ -225,7 +225,17 @@ new_index(char *name, char *pathto, char *prefix, char *comment, char *descr, ch
     tmp->deps =		_strdup(deps);
     tmp->depc =		0;
     tmp->installed =	package_installed(name);
+    tmp->vol_checked =	0;
     tmp->volume =	volume;
+    if (volume != 0) {
+	have_volumes = TRUE;
+	if (low_volume == 0)
+	    low_volume = volume;
+	else if (low_volume > volume)
+	    low_volume = volume;
+	if (high_volume < volume)
+	    high_volume = volume;
+    }
     return tmp;
 }
 
@@ -682,9 +692,11 @@ recycle:
 }
 
 int
-index_extract(Device *dev, PkgNodePtr top, PkgNodePtr who, Boolean depended)
+index_extract(Device *dev, PkgNodePtr top, PkgNodePtr who, Boolean depended,
+    int current_volume)
 {
     int status = DITEM_SUCCESS;
+    Boolean notyet = FALSE;
     PkgNodePtr tmp2;
     IndexEntryPtr id = who->data;
     WINDOW *w;
@@ -699,7 +711,7 @@ index_extract(Device *dev, PkgNodePtr top, PkgNodePtr who, Boolean depended)
      * a certain faulty INDEX file. 
      */
 
-    if (id->installed == 1)
+    if (id->installed == 1 || (have_volumes && id->vol_checked == current_volume))
 	return DITEM_SUCCESS;
 
     w = savescr();
@@ -712,9 +724,13 @@ index_extract(Device *dev, PkgNodePtr top, PkgNodePtr who, Boolean depended)
 	    if ((cp2 = index(cp, ' ')) != NULL)
 		*cp2 = '\0';
 	    if ((tmp2 = index_search(top, cp, NULL)) != NULL) {
-		status = index_extract(dev, top, tmp2, TRUE);
+		status = index_extract(dev, top, tmp2, TRUE, current_volume);
 		if (DITEM_STATUS(status) != DITEM_SUCCESS) {
-		    if (variable_get(VAR_NO_CONFIRM))
+		    /* package probably on a future disc volume */
+		    if (status & DITEM_CONTINUE) {
+			status = DITEM_SUCCESS;
+			notyet = TRUE;
+		    } else if (variable_get(VAR_NO_CONFIRM))
 			msgNotify("Loading of dependent package %s failed", cp);
 		    else
 			msgConfirm("Loading of dependent package %s failed", cp);
@@ -732,10 +748,38 @@ index_extract(Device *dev, PkgNodePtr top, PkgNodePtr who, Boolean depended)
 		cp = NULL;
 	}
     }
-    /* Done with the deps?  Load the real m'coy */
+
+    /*
+     * If iterating through disc volumes one at a time indicate failure if
+     * dependency install failed due to package being on a higher volume
+     * numbered disc, but that we should continue anyway.  Note that this
+     * package has already been processed for this disc volume so we don't
+     * need to do it again.
+     */
+
+    if (notyet) {
+    	restorescr(w);
+	id->vol_checked = current_volume;
+	return DITEM_FAILURE | DITEM_CONTINUE;
+    }
+
+    /*
+     * Done with the deps?  Try to load the real m'coy.  If iterating
+     * through a multi-volume disc set fail the install if the package
+     * is on a higher numbered volume to cut down on disc switches the
+     * user needs to do, but indicate caller should continue processing
+     * despite error return.  Note this package was processed for the
+     * current disc being checked.
+     */
+
     if (DITEM_STATUS(status) == DITEM_SUCCESS) {
 	/* Prompt user if the package is not available on the current volume. */
 	if(mediaDevice->type == DEVICE_TYPE_CDROM) {
+	    if (current_volume != 0 && id->volume > current_volume) {
+		restorescr(w);
+		id->vol_checked = current_volume;
+		return DITEM_FAILURE | DITEM_CONTINUE;
+	    }
 	    while (id->volume != dev->volume) {
 		if (!msgYesNo("This is disc #%d.  Package %s is on disc #%d\n"
 			  "Would you like to switch discs now?\n", dev->volume,
@@ -801,6 +845,8 @@ index_initialize(char *path)
     if (!index_initted) {
 	w = savescr();
 	dialog_clear_norefresh();
+	have_volumes = FALSE;
+	low_volume = high_volume = 0;
 
 	/* Got any media? */
 	if (!mediaVerify()) {
diff --git a/usr.sbin/sysinstall/package.c b/usr.sbin/sysinstall/package.c
index bcbf29c..2f416a2 100644
--- a/usr.sbin/sysinstall/package.c
+++ b/usr.sbin/sysinstall/package.c
@@ -69,7 +69,7 @@ package_add(char *name)
 
     tmp = index_search(&Top, name, &tmp);
     if (tmp)
-	return index_extract(mediaDevice, &Top, tmp, FALSE);
+	return index_extract(mediaDevice, &Top, tmp, FALSE, 0);
     else {
 	msgConfirm("Sorry, package %s was not found in the INDEX.", name);
 	return DITEM_FAILURE;
diff --git a/usr.sbin/sysinstall/sysinstall.h b/usr.sbin/sysinstall/sysinstall.h
index f0966f4..2bc366d 100644
--- a/usr.sbin/sysinstall/sysinstall.h
+++ b/usr.sbin/sysinstall/sysinstall.h
@@ -384,6 +384,7 @@ typedef struct _indexEntry {	/* A single entry in an INDEX file */
     char *deps;			/* packages this depends on	*/
     int  depc;			/* how many depend on me	*/
     int  installed;		/* indicates if it is installed */
+    int  vol_checked;		/* disc volume last checked for */
     char *maintainer;		/* maintainer			*/
     unsigned int volume;	/* Volume of package            */
 } IndexEntry;
@@ -416,6 +417,7 @@ extern Boolean		RunningAsInit;		/* Are we running stand-alone?			*/
 extern Boolean		DialogActive;		/* Is the dialog() stuff up?			*/
 extern Boolean		ColorDisplay;		/* Are we on a color display?			*/
 extern Boolean		OnVTY;			/* On a syscons VTY?				*/
+extern Boolean		have_volumes;		/* Media has multiple volumes                   */
 extern Variable		*VarHead;		/* The head of the variable chain		*/
 extern Device		*mediaDevice;		/* Where we're getting our distribution from	*/
 extern unsigned int	Dists;			/* Which distributions we want			*/
@@ -479,6 +481,8 @@ extern int              FixItMode;              /* FixItMode starts shell on cur
 extern const char *	StartName;		/* Which name we were started as */
 extern const char *	ProgName;		/* Program's proper name */
 extern int		NCpus;			/* # cpus on machine */
+extern int		low_volume;		/* Lowest volume number */
+extern int		high_volume;		/* Highest volume number */
 
 /* Important chunks. */
 extern Chunk *HomeChunk;
@@ -670,7 +674,7 @@ void		index_init(PkgNodePtr top, PkgNodePtr plist);
 void		index_node_free(PkgNodePtr top, PkgNodePtr plist);
 void		index_sort(PkgNodePtr top);
 void		index_print(PkgNodePtr top, int level);
-int		index_extract(Device *dev, PkgNodePtr top, PkgNodePtr who, Boolean depended);
+int		index_extract(Device *dev, PkgNodePtr top, PkgNodePtr who, Boolean depended, int current_volume);
 int		index_initialize(char *path);
 PkgNodePtr	index_search(PkgNodePtr top, char *str, PkgNodePtr *tp);