Add in freeramdisk.c, which (duh) frees ramdisks. If you have any

ramdisks lying about and want to free up the memory they have used,
this baby is the answar you have been waiting for.
 -Erik

9 files changed, 150 insertions, 3 deletions

diff --git a/Changelog b/Changelog
index 0398ce9..7593532 100644
--- a/Changelog
+++ b/Changelog
@@ -1,5 +1,8 @@
 0.43
 	* Wrote basename.
+	* Added freeramdisk, which will free up all memory associated
+	    with a ram disk.  Contributed by Emanuele Caratti <wiz@iol.it>
+	    and then adjusted a bit by me.
 	* tar wouldn't create directory entries that don't end in '/',
 	    now it does (thanks to Avery Pennarun <apenwarr@worldvisions.ca>)
 	* Several fixes from Pavel Roskin <pavel_roskin@geocities.com>:
diff --git a/Makefile b/Makefile
index 1d52e1d..ed5a4b1 100644
--- a/Makefile
+++ b/Makefile
@@ -25,7 +25,7 @@ BUILDTIME := $(shell TZ=GMT date "+%Y%m%d-%H%M")
 # Set the following to `true' to make a debuggable build.
 # Leave this set to `false' for production use.
 # eg: `make DODEBUG=true tests'
-DODEBUG = false
+DODEBUG = true
 
 # If you want a static binary, turn this on.  I can't think
 # of many situations where anybody would ever want it static, 
diff --git a/applets/busybox.c b/applets/busybox.c
index a80a567..ccf80a7 100644
--- a/applets/busybox.c
+++ b/applets/busybox.c
@@ -97,6 +97,9 @@ static const struct Applet applets[] = {
 #ifdef BB_FREE					//usr/bin
 	{"free", free_main},
 #endif
+#ifdef BB_FREERAMDISK			//sbin
+	{"freeramdisk", freeramdisk_main},
+#endif
 #ifdef BB_DEALLOCVT				//usr/bin
 	{"deallocvt", deallocvt_main},
 #endif
diff --git a/busybox.c b/busybox.c
index a80a567..ccf80a7 100644
--- a/busybox.c
+++ b/busybox.c
@@ -97,6 +97,9 @@ static const struct Applet applets[] = {
 #ifdef BB_FREE					//usr/bin
 	{"free", free_main},
 #endif
+#ifdef BB_FREERAMDISK			//sbin
+	{"freeramdisk", freeramdisk_main},
+#endif
 #ifdef BB_DEALLOCVT				//usr/bin
 	{"deallocvt", deallocvt_main},
 #endif
diff --git a/busybox.def.h b/busybox.def.h
index d42be44..3407b2c 100644
--- a/busybox.def.h
+++ b/busybox.def.h
@@ -25,6 +25,7 @@
 //#define BB_FDFLUSH
 #define BB_FIND
 #define BB_FREE
+#define BB_FREERAMDISK
 #define BB_FSCK_MINIX
 #define BB_GREP
 #define BB_GUNZIP
diff --git a/freeramdisk.c b/freeramdisk.c
new file mode 100644
index 0000000..426e132
--- /dev/null
+++ b/freeramdisk.c
@@ -0,0 +1,69 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * freeramdisk implementation for busybox
+ *
+ * Copyright (C) 2000 and written by Emanuele Caratti <wiz@iol.it>
+ * Adjusted a bit by Erik Andersen <andersee@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/mount.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include "internal.h"
+
+
+static const char freeramdisk_usage[] =
+	"freeramdisk DEVICE\n\n"
+	"Frees all memory used by the specified ramdisk.\n";
+
+extern int
+freeramdisk_main(int argc, char **argv)
+{
+	char  rname[256] = "/dev/ram";
+	int   f;
+
+	if (argc >= 2 || ( argv[1] && *argv[1] == '-')) {
+		usage(freeramdisk_usage);
+	}
+
+	if (argc >1)
+		strcpy(rname, argv[1]);
+
+	if ((f = open(rname, O_RDWR)) == -1) {
+		fatalError( "freeramdisk: cannot open %s: %s", rname, strerror(errno));
+	}
+	if (ioctl(f, BLKFLSBUF) < 0) {
+		fatalError( "freeramdisk: failed ioctl on %s: %s", rname, strerror(errno));
+	}
+	close(f);
+	exit(TRUE);
+}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
+
diff --git a/internal.h b/internal.h
index 4c7bd97..b271413 100644
--- a/internal.h
+++ b/internal.h
@@ -80,6 +80,7 @@ extern int fdflush_main(int argc, char **argv);
 extern int fsck_minix_main(int argc, char **argv);
 extern int find_main(int argc, char** argv);
 extern int free_main(int argc, char** argv);
+extern int freeramdisk_main(int argc, char** argv);
 extern int grep_main(int argc, char** argv);
 extern int gunzip_main (int argc, char** argv);
 extern int gzip_main(int argc, char** argv);
diff --git a/util-linux/freeramdisk.c b/util-linux/freeramdisk.c
new file mode 100644
index 0000000..426e132
--- /dev/null
+++ b/util-linux/freeramdisk.c
@@ -0,0 +1,69 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * freeramdisk implementation for busybox
+ *
+ * Copyright (C) 2000 and written by Emanuele Caratti <wiz@iol.it>
+ * Adjusted a bit by Erik Andersen <andersee@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/mount.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include "internal.h"
+
+
+static const char freeramdisk_usage[] =
+	"freeramdisk DEVICE\n\n"
+	"Frees all memory used by the specified ramdisk.\n";
+
+extern int
+freeramdisk_main(int argc, char **argv)
+{
+	char  rname[256] = "/dev/ram";
+	int   f;
+
+	if (argc >= 2 || ( argv[1] && *argv[1] == '-')) {
+		usage(freeramdisk_usage);
+	}
+
+	if (argc >1)
+		strcpy(rname, argv[1]);
+
+	if ((f = open(rname, O_RDWR)) == -1) {
+		fatalError( "freeramdisk: cannot open %s: %s", rname, strerror(errno));
+	}
+	if (ioctl(f, BLKFLSBUF) < 0) {
+		fatalError( "freeramdisk: failed ioctl on %s: %s", rname, strerror(errno));
+	}
+	close(f);
+	exit(TRUE);
+}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
+
diff --git a/utility.c b/utility.c
index c8ce392..64c1a48 100644
--- a/utility.c
+++ b/utility.c
@@ -84,7 +84,6 @@ extern void errorMsg(char *s, ...)
 
 	va_start(p, s);
 	fflush(stdout);
-	fprintf(stderr, "\n");
 	vfprintf(stderr, s, p);
 	fprintf(stderr, "\n");
 	va_end(p);
@@ -96,7 +95,6 @@ extern void fatalError(char *s, ...)
 
 	va_start(p, s);
 	fflush(stdout);
-	fprintf(stderr, "\n");
 	vfprintf(stderr, s, p);
 	fprintf(stderr, "\n");
 	va_end(p);