Date: Fri, 17 Jan 2003 21:10:40 -0800 From: Juli Mallett <jmallett@FreeBSD.org> To: current@FreeBSD.org Subject: tunefs using libufs. Message-ID: <20030117211040.B20672@FreeBSD.org>
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Can I get some tests of these changes to make tunefs use libufs?
Thanx,
juli.
%%%
Index: Makefile
===================================================================
RCS file: /home/ncvs/src/sbin/tunefs/Makefile,v
retrieving revision 1.6
diff -d -u -r1.6 Makefile
--- Makefile 4 Dec 2001 02:19:58 -0000 1.6
+++ Makefile 18 Jan 2003 05:08:29 -0000
@@ -3,5 +3,6 @@
PROG= tunefs
MAN= tunefs.8
+LDADD= -lufs
.include <bsd.prog.mk>
Index: tunefs.c
===================================================================
RCS file: /home/ncvs/src/sbin/tunefs/tunefs.c,v
retrieving revision 1.33
diff -d -u -r1.33 tunefs.c
--- tunefs.c 27 Nov 2002 02:18:57 -0000 1.33
+++ tunefs.c 18 Jan 2003 05:08:29 -0000
@@ -60,6 +60,7 @@
#include <err.h>
#include <fcntl.h>
#include <fstab.h>
+#include <libufs.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
@@ -69,26 +70,17 @@
/* the optimization warning string template */
#define OPTWARN "should optimize for %s with minfree %s %d%%"
-union {
- struct fs sb;
- char pad[MAXBSIZE];
-} sbun;
-#define sblock sbun.sb
+struct uufsd disk;
+#define sblock disk.d_fs
int fi;
long dev_bsize = 1;
-void bwrite(ufs2_daddr_t, const char *, int);
-int bread(ufs2_daddr_t, char *, int);
-void getsb(struct fs *, const char *);
-void putsb(struct fs *, const char *, int);
void usage(void);
void printfs(void);
int
-main(argc, argv)
- int argc;
- char *argv[];
+main(int argc, char *argv[])
{
char *special;
const char *name;
@@ -227,7 +219,12 @@
}
if (fs == NULL && (st.st_mode & S_IFMT) == S_IFDIR)
errx(10, "%s: unknown file system", special);
- getsb(&sblock, special);
+ if (ufs_disk_fillout(&disk, special) == -1) {
+ if (disk.d_error != NULL)
+ errx(11, "%s: %s", special, disk.d_error);
+ else
+ err(12, "%s", special);
+ }
if (pflag) {
printfs();
@@ -362,7 +359,7 @@
}
}
- putsb(&sblock, special, Aflag);
+ sbwrite(&disk, Aflag);
if (active) {
bzero(&args, sizeof(args));
if (mount("ufs", fs->fs_file,
@@ -374,7 +371,7 @@
}
void
-usage()
+usage(void)
{
fprintf(stderr, "%s\n%s\n%s\n",
"usage: tunefs [-A] [-a enable | disable] [-e maxbpg] [-f avgfilesize]",
@@ -383,66 +380,8 @@
exit(2);
}
-/*
- * Possible superblock locations ordered from most to least likely.
- */
-static int sblock_try[] = SBLOCKSEARCH;
-static ufs2_daddr_t sblockloc;
-
-void
-getsb(fs, file)
- struct fs *fs;
- const char *file;
-{
- int i;
-
- fi = open(file, O_RDONLY);
- if (fi < 0)
- err(3, "cannot open %s", file);
- for (i = 0; sblock_try[i] != -1; i++) {
- if (bread(sblock_try[i], (char *)fs, SBLOCKSIZE))
- err(4, "%s: bad super block", file);
- if ((fs->fs_magic == FS_UFS1_MAGIC ||
- (fs->fs_magic == FS_UFS2_MAGIC &&
- fs->fs_sblockloc == sblock_try[i])) &&
- fs->fs_bsize <= MAXBSIZE &&
- fs->fs_bsize >= sizeof(struct fs))
- break;
- }
- if (sblock_try[i] == -1)
- err(5, "Cannot find file system superblock");
- dev_bsize = fs->fs_fsize / fsbtodb(fs, 1);
- sblockloc = sblock_try[i] / dev_bsize;
-}
-
void
-putsb(fs, file, all)
- struct fs *fs;
- const char *file;
- int all;
-{
- int i;
-
- /*
- * Re-open the device read-write. Use the read-only file
- * descriptor as an interlock to prevent the device from
- * being mounted while we are switching mode.
- */
- i = fi;
- fi = open(file, O_RDWR);
- close(i);
- if (fi < 0)
- err(3, "cannot open %s", file);
- bwrite(sblockloc, (const char *)fs, SBLOCKSIZE);
- if (all)
- for (i = 0; i < fs->fs_ncg; i++)
- bwrite(fsbtodb(fs, cgsblock(fs, i)),
- (const char *)fs, SBLOCKSIZE);
- close(fi);
-}
-
-void
-printfs()
+printfs(void)
{
warnx("ACLs: (-a) %s",
(sblock.fs_flags & FS_ACLS)? "enabled" : "disabled");
@@ -466,35 +405,4 @@
if (sblock.fs_minfree < MINFREE &&
sblock.fs_optim == FS_OPTTIME)
warnx(OPTWARN, "space", "<", MINFREE);
-}
-
-void
-bwrite(blk, buf, size)
- ufs2_daddr_t blk;
- const char *buf;
- int size;
-{
-
- if (lseek(fi, (off_t)blk * dev_bsize, SEEK_SET) < 0)
- err(6, "FS SEEK");
- if (write(fi, buf, size) != size)
- err(7, "FS WRITE");
-}
-
-int
-bread(bno, buf, cnt)
- ufs2_daddr_t bno;
- char *buf;
- int cnt;
-{
- int i;
-
- if (lseek(fi, (off_t)bno * dev_bsize, SEEK_SET) < 0)
- return(1);
- if ((i = read(fi, buf, cnt)) != cnt) {
- for(i=0; i<sblock.fs_bsize; i++)
- buf[i] = 0;
- return (1);
- }
- return (0);
}
%%%
--
Juli Mallett <jmallett@FreeBSD.org>
AIM: BSDFlata -- IRC: juli on EFnet.
OpenDarwin, Mono, FreeBSD Developer.
ircd-hybrid Developer, EFnet addict.
FreeBSD on MIPS-Anything on FreeBSD.
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