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authorErik Andersen <andersen@codepoet.org>2000-03-04 22:23:27 +0000
committerErik Andersen <andersen@codepoet.org>2000-03-04 22:23:27 +0000
commit6437170cb31302d8525cd6fcbe0a2efad386ab9d (patch)
tree9c703636fa112255e7e73db890657d3598b17f02
parent029011b9eeaf491d00fda1d072c4c6094df96c3a (diff)
downloadbusybox-w32-6437170cb31302d8525cd6fcbe0a2efad386ab9d.tar.gz
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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
Diffstat
-rw-r--r--Changelog3
-rw-r--r--Makefile2
-rw-r--r--applets/busybox.c3
-rw-r--r--busybox.c3
-rw-r--r--busybox.def.h1
-rw-r--r--freeramdisk.c69
-rw-r--r--internal.h1
-rw-r--r--util-linux/freeramdisk.c69
-rw-r--r--utility.c2
9 files changed, 150 insertions, 3 deletions
diff --git a/Changelog b/Changelog
index 0398ce93e..759353272 100644
--- a/Changelog
+++ b/Changelog
@@ -1,5 +1,8 @@
10.43 10.43
2 * Wrote basename. 2 * Wrote basename.
3 * Added freeramdisk, which will free up all memory associated
4 with a ram disk. Contributed by Emanuele Caratti <wiz@iol.it>
5 and then adjusted a bit by me.
3 * tar wouldn't create directory entries that don't end in '/', 6 * tar wouldn't create directory entries that don't end in '/',
4 now it does (thanks to Avery Pennarun <apenwarr@worldvisions.ca>) 7 now it does (thanks to Avery Pennarun <apenwarr@worldvisions.ca>)
5 * Several fixes from Pavel Roskin <pavel_roskin@geocities.com>: 8 * Several fixes from Pavel Roskin <pavel_roskin@geocities.com>:
diff --git a/Makefile b/Makefile
index 1d52e1dcd..ed5a4b11d 100644
--- a/Makefile
+++ b/Makefile
@@ -25,7 +25,7 @@ BUILDTIME := $(shell TZ=GMT date "+%Y%m%d-%H%M")
25# Set the following to `true' to make a debuggable build. 25# Set the following to `true' to make a debuggable build.
26# Leave this set to `false' for production use. 26# Leave this set to `false' for production use.
27# eg: `make DODEBUG=true tests' 27# eg: `make DODEBUG=true tests'
28DODEBUG = false 28DODEBUG = true
29 29
30# If you want a static binary, turn this on. I can't think 30# If you want a static binary, turn this on. I can't think
31# of many situations where anybody would ever want it static, 31# of many situations where anybody would ever want it static,
diff --git a/applets/busybox.c b/applets/busybox.c
index a80a5678f..ccf80a75e 100644
--- a/applets/busybox.c
+++ b/applets/busybox.c
@@ -97,6 +97,9 @@ static const struct Applet applets[] = {
97#ifdef BB_FREE //usr/bin 97#ifdef BB_FREE //usr/bin
98 {"free", free_main}, 98 {"free", free_main},
99#endif 99#endif
100#ifdef BB_FREERAMDISK //sbin
101 {"freeramdisk", freeramdisk_main},
102#endif
100#ifdef BB_DEALLOCVT //usr/bin 103#ifdef BB_DEALLOCVT //usr/bin
101 {"deallocvt", deallocvt_main}, 104 {"deallocvt", deallocvt_main},
102#endif 105#endif
diff --git a/busybox.c b/busybox.c
index a80a5678f..ccf80a75e 100644
--- a/busybox.c
+++ b/busybox.c
@@ -97,6 +97,9 @@ static const struct Applet applets[] = {
97#ifdef BB_FREE //usr/bin 97#ifdef BB_FREE //usr/bin
98 {"free", free_main}, 98 {"free", free_main},
99#endif 99#endif
100#ifdef BB_FREERAMDISK //sbin
101 {"freeramdisk", freeramdisk_main},
102#endif
100#ifdef BB_DEALLOCVT //usr/bin 103#ifdef BB_DEALLOCVT //usr/bin
101 {"deallocvt", deallocvt_main}, 104 {"deallocvt", deallocvt_main},
102#endif 105#endif
diff --git a/busybox.def.h b/busybox.def.h
index d42be4422..3407b2cc0 100644
--- a/busybox.def.h
+++ b/busybox.def.h
@@ -25,6 +25,7 @@
25//#define BB_FDFLUSH 25//#define BB_FDFLUSH
26#define BB_FIND 26#define BB_FIND
27#define BB_FREE 27#define BB_FREE
28#define BB_FREERAMDISK
28#define BB_FSCK_MINIX 29#define BB_FSCK_MINIX
29#define BB_GREP 30#define BB_GREP
30#define BB_GUNZIP 31#define BB_GUNZIP
diff --git a/freeramdisk.c b/freeramdisk.c
new file mode 100644
index 000000000..426e13231
--- /dev/null
+++ b/freeramdisk.c
@@ -0,0 +1,69 @@
1/* vi: set sw=4 ts=4: */
2/*
3 * freeramdisk implementation for busybox
4 *
5 * Copyright (C) 2000 and written by Emanuele Caratti <wiz@iol.it>
6 * Adjusted a bit by Erik Andersen <andersee@debian.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24#include <stdio.h>
25#include <string.h>
26#include <sys/mount.h>
27#include <sys/types.h>
28#include <sys/stat.h>
29#include <fcntl.h>
30#include <sys/ioctl.h>
31#include <errno.h>
32#include "internal.h"
33
34
35static const char freeramdisk_usage[] =
36 "freeramdisk DEVICE\n\n"
37 "Frees all memory used by the specified ramdisk.\n";
38
39extern int
40freeramdisk_main(int argc, char **argv)
41{
42 char rname[256] = "/dev/ram";
43 int f;
44
45 if (argc >= 2 || ( argv[1] && *argv[1] == '-')) {
46 usage(freeramdisk_usage);
47 }
48
49 if (argc >1)
50 strcpy(rname, argv[1]);
51
52 if ((f = open(rname, O_RDWR)) == -1) {
53 fatalError( "freeramdisk: cannot open %s: %s", rname, strerror(errno));
54 }
55 if (ioctl(f, BLKFLSBUF) < 0) {
56 fatalError( "freeramdisk: failed ioctl on %s: %s", rname, strerror(errno));
57 }
58 close(f);
59 exit(TRUE);
60}
61
62/*
63Local Variables:
64c-file-style: "linux"
65c-basic-offset: 4
66tab-width: 4
67End:
68*/
69
diff --git a/internal.h b/internal.h
index 4c7bd97ed..b2714131f 100644
--- a/internal.h
+++ b/internal.h
@@ -80,6 +80,7 @@ extern int fdflush_main(int argc, char **argv);
80extern int fsck_minix_main(int argc, char **argv); 80extern int fsck_minix_main(int argc, char **argv);
81extern int find_main(int argc, char** argv); 81extern int find_main(int argc, char** argv);
82extern int free_main(int argc, char** argv); 82extern int free_main(int argc, char** argv);
83extern int freeramdisk_main(int argc, char** argv);
83extern int grep_main(int argc, char** argv); 84extern int grep_main(int argc, char** argv);
84extern int gunzip_main (int argc, char** argv); 85extern int gunzip_main (int argc, char** argv);
85extern int gzip_main(int argc, char** argv); 86extern int gzip_main(int argc, char** argv);
diff --git a/util-linux/freeramdisk.c b/util-linux/freeramdisk.c
new file mode 100644
index 000000000..426e13231
--- /dev/null
+++ b/util-linux/freeramdisk.c
@@ -0,0 +1,69 @@
1/* vi: set sw=4 ts=4: */
2/*
3 * freeramdisk implementation for busybox
4 *
5 * Copyright (C) 2000 and written by Emanuele Caratti <wiz@iol.it>
6 * Adjusted a bit by Erik Andersen <andersee@debian.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24#include <stdio.h>
25#include <string.h>
26#include <sys/mount.h>
27#include <sys/types.h>
28#include <sys/stat.h>
29#include <fcntl.h>
30#include <sys/ioctl.h>
31#include <errno.h>
32#include "internal.h"
33
34
35static const char freeramdisk_usage[] =
36 "freeramdisk DEVICE\n\n"
37 "Frees all memory used by the specified ramdisk.\n";
38
39extern int
40freeramdisk_main(int argc, char **argv)
41{
42 char rname[256] = "/dev/ram";
43 int f;
44
45 if (argc >= 2 || ( argv[1] && *argv[1] == '-')) {
46 usage(freeramdisk_usage);
47 }
48
49 if (argc >1)
50 strcpy(rname, argv[1]);
51
52 if ((f = open(rname, O_RDWR)) == -1) {
53 fatalError( "freeramdisk: cannot open %s: %s", rname, strerror(errno));
54 }
55 if (ioctl(f, BLKFLSBUF) < 0) {
56 fatalError( "freeramdisk: failed ioctl on %s: %s", rname, strerror(errno));
57 }
58 close(f);
59 exit(TRUE);
60}
61
62/*
63Local Variables:
64c-file-style: "linux"
65c-basic-offset: 4
66tab-width: 4
67End:
68*/
69
diff --git a/utility.c b/utility.c
index c8ce3921a..64c1a4827 100644
--- a/utility.c
+++ b/utility.c
@@ -84,7 +84,6 @@ extern void errorMsg(char *s, ...)
84 84
85 va_start(p, s); 85 va_start(p, s);
86 fflush(stdout); 86 fflush(stdout);
87 fprintf(stderr, "\n");
88 vfprintf(stderr, s, p); 87 vfprintf(stderr, s, p);
89 fprintf(stderr, "\n"); 88 fprintf(stderr, "\n");
90 va_end(p); 89 va_end(p);
@@ -96,7 +95,6 @@ extern void fatalError(char *s, ...)
96 95
97 va_start(p, s); 96 va_start(p, s);
98 fflush(stdout); 97 fflush(stdout);
99 fprintf(stderr, "\n");
100 vfprintf(stderr, s, p); 98 vfprintf(stderr, s, p);
101 fprintf(stderr, "\n"); 99 fprintf(stderr, "\n");
102 va_end(p); 100 va_end(p);
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