1907ec3a61
depend on new devname_r(3) as heart. Add /dev/pts magic directly to devname(3). While it can lead to returning non-existing paths, the behavior is more consistent that way. Drop caching layer in devname(3), it doesn't buy anything for the common case of having access to the database. Teach devname(3) proper fallback behavior of scanning /dev. Create both old-style and new-style database for now in /etc/rc.d/sysdb.
269 lines
6.3 KiB
C
269 lines
6.3 KiB
C
/* $NetBSD: dev_mkdb.c,v 1.29 2012/06/03 21:42:47 joerg Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__RCSID("$NetBSD: dev_mkdb.c,v 1.29 2012/06/03 21:42:47 joerg Exp $");
|
|
|
|
#include <sys/queue.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <cdbw.h>
|
|
#include <db.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <fts.h>
|
|
#include <paths.h>
|
|
#include <search.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <util.h>
|
|
|
|
#define HASH_SIZE 65536
|
|
#define FILE_PERMISSION S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH
|
|
|
|
static struct cdbw *db;
|
|
static DB *db_compat;
|
|
static const char *db_name;
|
|
static char *db_name_tmp;
|
|
|
|
static void usage(void) __dead;
|
|
|
|
static void
|
|
cdb_open(void)
|
|
{
|
|
db = cdbw_open();
|
|
if (db == NULL)
|
|
err(1, "opening cdb writer failed");
|
|
}
|
|
|
|
static void
|
|
cdb_close(void)
|
|
{
|
|
int fd;
|
|
|
|
fd = open(db_name_tmp, O_CREAT|O_EXCL|O_WRONLY, FILE_PERMISSION);
|
|
if (fd == -1)
|
|
err(1, "opening %s failed", db_name_tmp);
|
|
if (cdbw_output(db, fd, "NetBSD6 devdb", NULL))
|
|
err(1, "failed to write temporary database %s", db_name_tmp);
|
|
cdbw_close(db);
|
|
db = NULL;
|
|
if (close(fd))
|
|
err(1, "failed to write temporary database %s", db_name_tmp);
|
|
}
|
|
|
|
static void
|
|
cdb_add_entry(dev_t dev, mode_t type, const char *relpath)
|
|
{
|
|
uint8_t *buf;
|
|
size_t len;
|
|
|
|
len = strlen(relpath) + 1;
|
|
buf = malloc(len + 10);
|
|
le64enc(buf, dev);
|
|
le16enc(buf + 8, type);
|
|
memcpy(buf + 10, relpath, len);
|
|
cdbw_put(db, buf, 10, buf, len + 10);
|
|
free(buf);
|
|
}
|
|
|
|
static void
|
|
compat_open(void)
|
|
{
|
|
static HASHINFO openinfo = {
|
|
4096, /* bsize */
|
|
128, /* ffactor */
|
|
1024, /* nelem */
|
|
2048 * 1024, /* cachesize */
|
|
NULL, /* hash() */
|
|
0 /* lorder */
|
|
};
|
|
|
|
db_compat = dbopen(db_name_tmp, O_CREAT|O_EXCL|O_EXLOCK|O_RDWR|O_TRUNC,
|
|
FILE_PERMISSION, DB_HASH, &openinfo);
|
|
|
|
if (db_compat == NULL)
|
|
err(1, "failed to create temporary database %s",
|
|
db_name_tmp);
|
|
}
|
|
|
|
static void
|
|
compat_close(void)
|
|
{
|
|
if ((*db_compat->close)(db_compat))
|
|
err(1, "failed to write temporary database %s", db_name_tmp);
|
|
}
|
|
|
|
static void
|
|
compat_add_entry(dev_t dev, mode_t type, const char *relpath)
|
|
{
|
|
/*
|
|
* Keys are a mode_t followed by a dev_t. The former is the type of
|
|
* the file (mode & S_IFMT), the latter is the st_rdev field. Note
|
|
* that the structure may contain padding, so we have to clear it
|
|
* out here.
|
|
*/
|
|
struct {
|
|
mode_t type;
|
|
dev_t dev;
|
|
} bkey;
|
|
struct {
|
|
mode_t type;
|
|
int32_t dev;
|
|
} obkey;
|
|
DBT data, key;
|
|
|
|
(void)memset(&bkey, 0, sizeof(bkey));
|
|
key.data = &bkey;
|
|
key.size = sizeof(bkey);
|
|
data.data = __UNCONST(relpath);
|
|
data.size = strlen(relpath) + 1;
|
|
bkey.type = type;
|
|
bkey.dev = dev;
|
|
if ((*db_compat->put)(db_compat, &key, &data, 0))
|
|
err(1, "failed to write temporary database %s", db_name_tmp);
|
|
|
|
/*
|
|
* If the device fits into the old 32bit format, add compat entry
|
|
* for pre-NetBSD6 libc.
|
|
*/
|
|
|
|
if ((dev_t)(int32_t)dev != dev)
|
|
return;
|
|
|
|
(void)memset(&obkey, 0, sizeof(obkey));
|
|
key.data = &obkey;
|
|
key.size = sizeof(obkey);
|
|
data.data = __UNCONST(relpath);
|
|
data.size = strlen(relpath) + 1;
|
|
obkey.type = type;
|
|
obkey.dev = (int32_t)dev;
|
|
if ((*db_compat->put)(db_compat, &key, &data, 0))
|
|
err(1, "failed to write temporary database %s", db_name_tmp);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
struct stat *st;
|
|
FTS *ftsp;
|
|
FTSENT *p;
|
|
int ch;
|
|
char *pathv[2];
|
|
size_t dlen;
|
|
int compat_mode;
|
|
|
|
setprogname(argv[0]);
|
|
compat_mode = 0;
|
|
|
|
while ((ch = getopt(argc, argv, "co:")) != -1)
|
|
switch (ch) {
|
|
case 'c':
|
|
compat_mode = 1;
|
|
break;
|
|
case 'o':
|
|
db_name = optarg;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc > 1)
|
|
usage();
|
|
|
|
pathv[1] = NULL;
|
|
if (argc == 1)
|
|
pathv[0] = argv[0];
|
|
else
|
|
pathv[0] = __UNCONST(_PATH_DEV);
|
|
|
|
ftsp = fts_open(pathv, FTS_NOCHDIR | FTS_PHYSICAL, NULL);
|
|
if (ftsp == NULL)
|
|
err(1, "fts_open: %s", pathv[0]);
|
|
|
|
if (db_name == NULL) {
|
|
if (compat_mode)
|
|
db_name = _PATH_DEVDB;
|
|
else
|
|
db_name = _PATH_DEVCDB;
|
|
}
|
|
easprintf(&db_name_tmp, "%s.XXXXXXX", db_name);
|
|
mktemp(db_name_tmp);
|
|
|
|
if (compat_mode)
|
|
compat_open();
|
|
else
|
|
cdb_open();
|
|
|
|
while ((p = fts_read(ftsp)) != NULL) {
|
|
if (p->fts_info != FTS_DEFAULT)
|
|
continue;
|
|
|
|
st = p->fts_statp;
|
|
if (!S_ISCHR(st->st_mode) && !S_ISBLK(st->st_mode))
|
|
continue;
|
|
dlen = strlen(pathv[0]);
|
|
while (pathv[0][dlen] == '/')
|
|
++dlen;
|
|
if (compat_mode)
|
|
compat_add_entry(st->st_rdev, st->st_mode & S_IFMT,
|
|
p->fts_path + dlen);
|
|
else
|
|
cdb_add_entry(st->st_rdev, st->st_mode & S_IFMT,
|
|
p->fts_path + dlen);
|
|
}
|
|
(void)fts_close(ftsp);
|
|
|
|
if (compat_mode)
|
|
compat_close();
|
|
else
|
|
cdb_close();
|
|
|
|
if (rename(db_name_tmp, db_name) == -1)
|
|
err(1, "rename %s to %s", db_name_tmp, db_name);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
(void)fprintf(stderr, "Usage: %s [-c] [-o database] [directory]\n",
|
|
getprogname());
|
|
exit(1);
|
|
}
|