Implement a -r option to fsdb(8), ``read/only''.
This commit is contained in:
Joerg Wunsch
parent
992b8e3ad2
commit
36b8baa315
@ -26,7 +26,7 @@
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.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $Id$
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.\" $Id: fsdb.8,v 1.6 1997/02/22 14:32:25 peter Exp $
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.\"
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.Dd September 14, 1995
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.Dt FSDB 8
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@ -38,6 +38,7 @@
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.Nm
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.Op Fl d
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.Op Fl f
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.Op Fl r
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.Ar fsname
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.Sh DESCRIPTION
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.Nm
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@ -66,6 +67,11 @@ code).
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The
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.Fl f
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option is left for historical reasons and has no meaning.
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.Pp
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Option
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.Fl r
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opens the filesystem read/only, and disables all commands that would
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write to it.
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.Sh COMMANDS
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Besides the built-in
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.Xr libedit 3
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@ -29,7 +29,7 @@
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*/
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#ifndef lint
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static char rcsid[] = "$Id$";
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static char rcsid[] = "$Id: fsdb.c,v 1.7 1997/03/13 12:44:51 peter Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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@ -63,10 +63,11 @@ int cmdloop __P((void));
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void
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usage()
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{
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errx(1, "usage: %s [-d] -f <fsname>", __progname);
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errx(1, "usage: %s [-d] [-r] -f <fsname>", __progname);
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}
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int returntosingle = 0;
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char nflag = 0;
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/*
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* We suck in lots of fsck code, and just pick & choose the stuff we want.
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@ -83,7 +84,7 @@ main(argc, argv)
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char *fsys = NULL;
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struct stat stb;
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while (-1 != (ch = getopt(argc, argv, "f:d"))) {
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while (-1 != (ch = getopt(argc, argv, "f:dr"))) {
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switch (ch) {
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case 'f':
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fsys = optarg;
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@ -91,6 +92,9 @@ main(argc, argv)
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case 'd':
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debug++;
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break;
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case 'r':
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nflag++; /* "no" in fsck, readonly for us */
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break;
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default:
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usage();
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}
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@ -106,15 +110,17 @@ main(argc, argv)
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if (!setup(fsys))
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errx(1, "cannot set up file system `%s'", fsys);
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printf("Editing file system `%s'\nLast Mounted on %s\n", fsys,
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sblock.fs_fsmnt);
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printf("%s file system `%s'\nLast Mounted on %s\n",
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nflag? "Examining": "Editing", fsys, sblock.fs_fsmnt);
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rval = cmdloop();
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sblock.fs_clean = 0; /* mark it dirty */
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sbdirty();
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ckfini(0);
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printf("*** FILE SYSTEM MARKED DIRTY\n");
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printf("*** BE SURE TO RUN FSCK TO CLEAN UP ANY DAMAGE\n");
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printf("*** IF IT WAS MOUNTED, RE-MOUNT WITH -u -o reload\n");
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if (!nflag) {
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sblock.fs_clean = 0; /* mark it dirty */
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sbdirty();
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ckfini(0);
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printf("*** FILE SYSTEM MARKED DIRTY\n");
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printf("*** BE SURE TO RUN FSCK TO CLEAN UP ANY DAMAGE\n");
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printf("*** IF IT WAS MOUNTED, RE-MOUNT WITH -u -o reload\n");
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}
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exit(rval);
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}
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@ -150,37 +156,37 @@ CMDFUNC(chinum); /* Change inode # of dirent */
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CMDFUNC(chname); /* Change dirname of dirent */
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struct cmdtable cmds[] = {
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{ "help", "Print out help", 1, 1, helpfn },
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{ "?", "Print out help", 1, 1, helpfn },
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{ "inode", "Set active inode to INUM", 2, 2, focus },
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{ "clri", "Clear inode INUM", 2, 2, zapi },
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{ "lookup", "Set active inode by looking up NAME", 2, 2, focusname },
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{ "cd", "Set active inode by looking up NAME", 2, 2, focusname },
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{ "back", "Go to previous active inode", 1, 1, back },
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{ "active", "Print active inode", 1, 1, active },
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{ "print", "Print active inode", 1, 1, active },
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{ "uplink", "Increment link count", 1, 1, uplink },
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{ "downlink", "Decrement link count", 1, 1, downlink },
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{ "linkcount", "Set link count to COUNT", 2, 2, linkcount },
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{ "ls", "List current inode as directory", 1, 1, ls },
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{ "rm", "Remove NAME from current inode directory", 2, 2, rm },
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{ "del", "Remove NAME from current inode directory", 2, 2, rm },
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{ "ln", "Hardlink INO into current inode directory as NAME", 3, 3, ln },
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{ "chinum", "Change dir entry number INDEX to INUM", 3, 3, chinum },
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{ "chname", "Change dir entry number INDEX to NAME", 3, 3, chname },
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{ "chtype", "Change type of current inode to TYPE", 2, 2, newtype },
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{ "chmod", "Change mode of current inode to MODE", 2, 2, chmode },
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{ "chlen", "Change length of current inode to LENGTH", 2, 2, chlen },
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{ "chown", "Change owner of current inode to OWNER", 2, 2, chowner },
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{ "chgrp", "Change group of current inode to GROUP", 2, 2, chgroup },
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{ "chflags", "Change flags of current inode to FLAGS", 2, 2, chaflags },
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{ "chgen", "Change generation number of current inode to GEN", 2, 2, chgen },
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{ "mtime", "Change mtime of current inode to MTIME", 2, 2, chmtime },
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{ "ctime", "Change ctime of current inode to CTIME", 2, 2, chctime },
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{ "atime", "Change atime of current inode to ATIME", 2, 2, chatime },
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{ "quit", "Exit", 1, 1, quit },
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{ "q", "Exit", 1, 1, quit },
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{ "exit", "Exit", 1, 1, quit },
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{ "help", "Print out help", 1, 1, FL_RO, helpfn },
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{ "?", "Print out help", 1, 1, FL_RO, helpfn },
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{ "inode", "Set active inode to INUM", 2, 2, FL_RO, focus },
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{ "clri", "Clear inode INUM", 2, 2, FL_WR, zapi },
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{ "lookup", "Set active inode by looking up NAME", 2, 2, FL_RO, focusname },
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{ "cd", "Set active inode by looking up NAME", 2, 2, FL_RO, focusname },
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{ "back", "Go to previous active inode", 1, 1, FL_RO, back },
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{ "active", "Print active inode", 1, 1, FL_RO, active },
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{ "print", "Print active inode", 1, 1, FL_RO, active },
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{ "uplink", "Increment link count", 1, 1, FL_WR, uplink },
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{ "downlink", "Decrement link count", 1, 1, FL_WR, downlink },
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{ "linkcount", "Set link count to COUNT", 2, 2, FL_WR, linkcount },
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{ "ls", "List current inode as directory", 1, 1, FL_RO, ls },
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{ "rm", "Remove NAME from current inode directory", 2, 2, FL_WR, rm },
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{ "del", "Remove NAME from current inode directory", 2, 2, FL_WR, rm },
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{ "ln", "Hardlink INO into current inode directory as NAME", 3, 3, FL_WR, ln },
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{ "chinum", "Change dir entry number INDEX to INUM", 3, 3, FL_WR, chinum },
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{ "chname", "Change dir entry number INDEX to NAME", 3, 3, FL_WR, chname },
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{ "chtype", "Change type of current inode to TYPE", 2, 2, FL_WR, newtype },
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{ "chmod", "Change mode of current inode to MODE", 2, 2, FL_WR, chmode },
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{ "chlen", "Change length of current inode to LENGTH", 2, 2, FL_WR, chlen },
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{ "chown", "Change owner of current inode to OWNER", 2, 2, FL_WR, chowner },
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{ "chgrp", "Change group of current inode to GROUP", 2, 2, FL_WR, chgroup },
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{ "chflags", "Change flags of current inode to FLAGS", 2, 2, FL_WR, chaflags },
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{ "chgen", "Change generation number of current inode to GEN", 2, 2, FL_WR, chgen },
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{ "mtime", "Change mtime of current inode to MTIME", 2, 2, FL_WR, chmtime },
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{ "ctime", "Change ctime of current inode to CTIME", 2, 2, FL_WR, chctime },
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{ "atime", "Change atime of current inode to ATIME", 2, 2, FL_WR, chatime },
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{ "quit", "Exit", 1, 1, FL_RO, quit },
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{ "q", "Exit", 1, 1, FL_RO, quit },
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{ "exit", "Exit", 1, 1, FL_RO, quit },
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{ NULL, 0, 0, 0 },
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};
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@ -253,7 +259,10 @@ cmdloop()
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known = 0;
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for (cmdp = cmds; cmdp->cmd; cmdp++) {
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if (!strcmp(cmdp->cmd, cmd_argv[0])) {
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if (cmd_argc >= cmdp->minargc &&
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if ((cmdp->flags & FL_WR) == FL_WR && nflag)
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warnx("`%s' requires write access", cmd_argv[0]),
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rval = 1;
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else if (cmd_argc >= cmdp->minargc &&
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cmd_argc <= cmdp->maxargc)
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rval = (*cmdp->handler)(cmd_argc, cmd_argv);
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else
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@ -27,7 +27,7 @@
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id$
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* $Id: fsdb.h,v 1.2 1997/03/13 12:44:52 peter Exp $
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*/
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extern int bread __P((int fd, char *buf, daddr_t blk, long size));
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@ -45,6 +45,9 @@ struct cmdtable {
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const char *helptxt;
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unsigned int minargc;
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unsigned int maxargc;
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unsigned int flags;
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#define FL_RO 0x0000 /* for symmetry */
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#define FL_WR 0x0001 /* wants to write */
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int (*handler) __P((int argc, char *argv[]));
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};
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extern struct dinode *curinode;
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