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Allow the path for /dev and the location of the database file to

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be overridden on the command line. This is useful for setting up
chroot/jail environments.

PR:		bin/23509
Submitted by:	Seth Kingsley <sethk@pike.osd.bsdi.com>
MFC after:	1 week
This commit is contained in:
Ian Dowse 2001-11-18 17:24:28 +00:00
parent 56f7305f58
commit 00a2029a0e
2 changed files with 33 additions and 14 deletions
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17
usr.sbin/dev_mkdb/dev_mkdb.8
View File

@ -42,17 +42,22 @@
database
.Sh SYNOPSIS
.Nm
.Op Fl f Ar file
.Op Ar directory
.Sh DESCRIPTION
The
.Nm
command creates a
.Xr db 3
hash access method database in
.Pa /var/run/dev.db
.Ar file
.Pf ( Pa /var/run/dev.db
by default)
which contains the names of all of the character and block special
files in the
.Pa /dev
directory, using the file type and the
files in
.Ar directory
.Pf ( Pa /dev
by default), using the file type and the
.Fa st_rdev
field as the key.
.Pp
@ -63,9 +68,9 @@ the latter is the st_rdev field.
.Sh FILES
.Bl -tag -width /var/run/dev.db -compact
.It Pa /dev
Device directory.
Default device directory.
.It Pa /var/run/dev.db
Database file.
Default database file.
.El
.Sh SEE ALSO
.Xr ps 1 ,

30
usr.sbin/dev_mkdb/dev_mkdb.c
View File

@ -76,12 +76,18 @@ main(argc, argv)
} bkey;
DB *db;
DBT data, key;
int ch;
int ch, fflag;
u_char buf[MAXNAMLEN + 1];
char dbtmp[MAXPATHLEN + 1], dbname[MAXPATHLEN + 1];
const char *dirname;
while ((ch = getopt(argc, argv, "")) != -1)
fflag = 0;
while ((ch = getopt(argc, argv, "f:")) != -1)
switch((char)ch) {
case 'f':
strlcpy(dbname, optarg, sizeof(dbname));
fflag = 1;
break;
case '?':
default:
usage();
@ -89,16 +95,24 @@ main(argc, argv)
argc -= optind;
argv += optind;
if (argc > 0)
if (argc > 1)
usage();
if (argc == 1)
dirname = argv[0];
else
dirname = _PATH_DEV;
if (chdir(_PATH_DEV))
err(1, "%s", _PATH_DEV);
if (!fflag) {
(void)snprintf(dbname, sizeof(dbtmp), "%sdev.db", _PATH_VARRUN);
(void)snprintf(dbtmp, sizeof(dbtmp), "%sdev.tmp", _PATH_VARRUN);
} else
(void)snprintf(dbtmp, sizeof(dbtmp), "%s.tmp", dbname);
if (chdir(dirname))
err(1, "%s", dirname);
dirp = opendir(".");
(void)snprintf(dbtmp, sizeof(dbtmp), "%sdev.tmp", _PATH_VARRUN);
(void)snprintf(dbname, sizeof(dbtmp), "%sdev.db", _PATH_VARRUN);
db = dbopen(dbtmp, O_CREAT|O_EXLOCK|O_RDWR|O_TRUNC,
S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH, DB_HASH, NULL);
if (db == NULL)
@ -148,6 +162,6 @@ main(argc, argv)
static void
usage()
{
(void)fprintf(stderr, "usage: dev_mkdb\n");
(void)fprintf(stderr, "usage: dev_mkdb [-f file] [directory]\n");
exit(1);
}