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Implement incremental passwd database updates. This is done by ading a '-u'

Browse Source 
option to pwd_mkdb and adding this option to utilities invoking it.
Further, the filling of both the secure and insecure databases has been
merged into one loop giving also a performance improvemnet.
Note that I did *not* change the adduser command. I don't read perl
(it is a write only language anyway).
The change will drastically improve performance for passwd and
friends with large passwd files. Vipw's performance won't change.
In order to do that some kind of diff should be made between the
old and new master.passwd and depending the amount of changes, an
incremental or complete update of the databases should be agreed
upon.
This commit is contained in:
Guido van Rooij 1996-07-01 19:38:50 +00:00
parent a111a7f827
commit 79a1b8d9e2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=16876
10 changed files with 258 additions and 153 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
lib/libutil/pw_util.c
View File

@ -138,7 +138,8 @@ pw_tmp()
}
int
pw_mkdb()
pw_mkdb(username)
char *username;
{
int pstat;
pid_t pid;
@ -146,7 +147,12 @@ pw_mkdb()
warnx("rebuilding the database...");
(void)fflush(stderr);
if (!(pid = vfork())) {
execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
if(!username) {
execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
} else {
execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", "-u",
username, tempname, NULL);
}
pw_error(_PATH_PWD_MKDB, 1, 1);
}
pid = waitpid(pid, &pstat, 0);

6
usr.bin/chpass/chpass.c
View File

@ -40,7 +40,7 @@ static char copyright[] =
#ifndef lint
static char sccsid[] = "From: @(#)chpass.c 8.4 (Berkeley) 4/2/94";
static char rcsid[] =
"$Id: chpass.c,v 1.7 1996/02/23 16:08:56 wpaul Exp $";
"$Id: chpass.c,v 1.8 1996/05/25 01:05:17 wpaul Exp $";
#endif /* not lint */
#include <sys/param.h>
@ -84,6 +84,7 @@ main(argc, argv)
{
enum { NEWSH, LOADENTRY, EDITENTRY, NEWPW } op;
struct passwd *pw, lpw;
char *username;
int ch, pfd, tfd;
char *arg;
#ifdef YP
@ -180,6 +181,7 @@ main(argc, argv)
default:
usage();
}
username = pw->pw_name;
if (op == NEWSH) {
/* protect p_shell -- it thinks NULL is /bin/sh */
if (!arg[0])
@ -250,7 +252,7 @@ main(argc, argv)
#endif /* YP */
pw_copy(pfd, tfd, pw);
if (!pw_mkdb())
if (!pw_mkdb(username))
pw_error((char *)NULL, 0, 1);
#ifdef YP
}

4
usr.bin/passwd/local_passwd.c
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
* $Id: local_passwd.c,v 1.8 1995/12/16 09:45:12 markm Exp $
*/
#ifndef lint
@ -176,7 +176,7 @@ local_passwd(uname)
pw->pw_change = 0;
pw_copy(pfd, tfd, pw);
if (!pw_mkdb())
if (!pw_mkdb(uname))
pw_error((char *)NULL, 0, 1);
return (0);
}

355
usr.sbin/pwd_mkdb/pwd_mkdb.c
View File

@ -79,6 +79,7 @@ static char prefix[MAXPATHLEN];
void cleanup __P((void));
void error __P((char *));
void cp __P((char *, char *, mode_t mode));
void mv __P((char *, char *));
int scan __P((FILE *, struct passwd *));
void usage __P((void));
@ -88,18 +89,23 @@ main(argc, argv)
int argc;
char *argv[];
{
DB *dp, *edp;
DBT data, key;
DB *dp, *sdp, *pw_db;
DBT data, sdata, key;
FILE *fp, *oldfp;
sigset_t set;
int ch, cnt, ypcnt, len, makeold, tfd, yp_enabled = 0;
char *p, *t;
char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024];
char sbuf[MAX(MAXPATHLEN, LINE_MAX * 2)];
char buf2[MAXPATHLEN];
char sbuf2[MAXPATHLEN];
char *username;
u_int method, methoduid;
strcpy(prefix, _PATH_PWD);
makeold = 0;
while ((ch = getopt(argc, argv, "d:pv")) != EOF)
username = NULL;
while ((ch = getopt(argc, argv, "d:pu:v")) != EOF)
switch(ch) {
case 'd':
strcpy(prefix, optarg);
@ -107,6 +113,9 @@ main(argc, argv)
case 'p': /* create V7 "file.orig" */
makeold = 1;
break;
case 'u': /* only update this record */
username = optarg;
break;
case 'v': /* backward compatible */
break;
case '?':
@ -116,7 +125,7 @@ main(argc, argv)
argc -= optind;
argv += optind;
if (argc != 1)
if (argc != 1 || *username == '+' || *username == '-')
usage();
/*
@ -141,11 +150,82 @@ main(argc, argv)
/* Open the temporary insecure password database. */
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _MP_DB);
dp = dbopen(buf,
O_RDWR|O_CREAT|O_EXCL, PERM_INSECURE, DB_HASH, &openinfo);
if (dp == NULL)
error(buf);
clean = FILE_INSECURE;
(void)snprintf(sbuf, sizeof(sbuf), "%s/%s.tmp", prefix, _SMP_DB);
if(username) {
(void)snprintf(buf2, sizeof(buf2), "%s/%s", prefix, _MP_DB);
(void)snprintf(sbuf2, sizeof(sbuf2), "%s/%s", prefix, _SMP_DB);
clean = FILE_INSECURE;
cp(buf2, buf, PERM_INSECURE);
dp = dbopen(buf,
O_RDWR|O_EXCL, PERM_INSECURE, DB_HASH, &openinfo);
if (dp == NULL)
error(buf);
clean = FILE_SECURE;
cp(sbuf2, sbuf, PERM_SECURE);
sdp = dbopen(sbuf,
O_RDWR|O_EXCL, PERM_SECURE, DB_HASH, &openinfo);
if (sdp == NULL)
error(sbuf);
/*
* Do some trouble to check if we should store this users
* uid. Don't use getpwnam/getpwuid as that interferes
* with NIS.
*/
pw_db = dbopen(_PATH_MP_DB, O_RDONLY, 0, DB_HASH, NULL);
if (!pw_db)
error(_MP_DB);
buf[0] = _PW_KEYBYNAME;
len = strlen(username);
/* Only check that username fits in buffer */
memmove(buf + 1, username, MIN(len, sizeof(buf) - 1));
key.data = (u_char *)buf;
key.size = len + 1;
if ((pw_db->get)(pw_db, &key, &data, 0) == 0) {
p = (char *)data.data;
/* jump over pw_name and pw_passwd, to get to pw_uid */
while(*p++);
while(*p++);
buf[0] = _PW_KEYBYUID;
memmove(buf + 1, p, sizeof(int));
key.data = (u_char *)buf;
key.size = sizeof(int) + 1;
if ((pw_db->get)(pw_db, &key, &data, 0) == 0) {
/* First field of data.data holds pw_pwname */
if(!strcmp(data.data, username))
methoduid = 0;
else
methoduid = R_NOOVERWRITE;
} else {
methoduid = R_NOOVERWRITE;
}
} else {
methoduid = R_NOOVERWRITE;
}
(void)(pw_db->close)(pw_db);
method = 0;
} else {
dp = dbopen(buf,
O_RDWR|O_CREAT|O_EXCL, PERM_INSECURE, DB_HASH, &openinfo);
if (dp == NULL)
error(buf);
clean = FILE_INSECURE;
sdp = dbopen(sbuf,
O_RDWR|O_CREAT|O_EXCL, PERM_SECURE, DB_HASH, &openinfo);
if (sdp == NULL)
error(sbuf);
clean = FILE_SECURE;
method = R_NOOVERWRITE;
methoduid = R_NOOVERWRITE;
}
/*
* Open file for old password file. Minor trickiness -- don't want to
@ -177,63 +257,109 @@ main(argc, argv)
*/
ypcnt = 1;
data.data = (u_char *)buf;
sdata.data = (u_char *)sbuf;
key.data = (u_char *)tbuf;
for (cnt = 1; scan(fp, &pwd); ++cnt) {
if(pwd.pw_name[0] == '+' || pwd.pw_name[0] == '-')
yp_enabled = 1;
#define COMPACT(e) t = e; while (*p++ = *t++);
/* Create insecure data. */
p = buf;
COMPACT(pwd.pw_name);
COMPACT("*");
memmove(p, &pwd.pw_uid, sizeof(int));
p += sizeof(int);
memmove(p, &pwd.pw_gid, sizeof(int));
p += sizeof(int);
memmove(p, &pwd.pw_change, sizeof(time_t));
p += sizeof(time_t);
COMPACT(pwd.pw_class);
COMPACT(pwd.pw_gecos);
COMPACT(pwd.pw_dir);
COMPACT(pwd.pw_shell);
memmove(p, &pwd.pw_expire, sizeof(time_t));
p += sizeof(time_t);
memmove(p, &pwd.pw_fields, sizeof pwd.pw_fields);
p += sizeof pwd.pw_fields;
data.size = p - buf;
if (!username || (strcmp(username, pwd.pw_name) == 0)) {
/* Create insecure data. */
p = buf;
COMPACT(pwd.pw_name);
COMPACT("*");
memmove(p, &pwd.pw_uid, sizeof(int));
p += sizeof(int);
memmove(p, &pwd.pw_gid, sizeof(int));
p += sizeof(int);
memmove(p, &pwd.pw_change, sizeof(time_t));
p += sizeof(time_t);
COMPACT(pwd.pw_class);
COMPACT(pwd.pw_gecos);
COMPACT(pwd.pw_dir);
COMPACT(pwd.pw_shell);
memmove(p, &pwd.pw_expire, sizeof(time_t));
p += sizeof(time_t);
memmove(p, &pwd.pw_fields, sizeof pwd.pw_fields);
p += sizeof pwd.pw_fields;
data.size = p - buf;
/* Store insecure by name. */
tbuf[0] = _PW_KEYBYNAME;
len = strlen(pwd.pw_name);
memmove(tbuf + 1, pwd.pw_name, len);
key.size = len + 1;
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
error("put");
/* Create secure data. */
p = sbuf;
COMPACT(pwd.pw_name);
COMPACT(pwd.pw_passwd);
memmove(p, &pwd.pw_uid, sizeof(int));
p += sizeof(int);
memmove(p, &pwd.pw_gid, sizeof(int));
p += sizeof(int);
memmove(p, &pwd.pw_change, sizeof(time_t));
p += sizeof(time_t);
COMPACT(pwd.pw_class);
COMPACT(pwd.pw_gecos);
COMPACT(pwd.pw_dir);
COMPACT(pwd.pw_shell);
memmove(p, &pwd.pw_expire, sizeof(time_t));
p += sizeof(time_t);
memmove(p, &pwd.pw_fields, sizeof pwd.pw_fields);
p += sizeof pwd.pw_fields;
sdata.size = p - sbuf;
/* Store insecure by number. */
tbuf[0] = _PW_KEYBYNUM;
memmove(tbuf + 1, &cnt, sizeof(cnt));
key.size = sizeof(cnt) + 1;
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
error("put");
/* Store insecure by uid. */
tbuf[0] = _PW_KEYBYUID;
memmove(tbuf + 1, &pwd.pw_uid, sizeof(pwd.pw_uid));
key.size = sizeof(pwd.pw_uid) + 1;
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
error("put");
/* Store insecure special plus and special minus */
if (pwd.pw_name[0] == '+' || pwd.pw_name[0] == '-') {
tbuf[0] = _PW_KEYYPBYNUM;
memmove(tbuf + 1, &ypcnt, sizeof(cnt));
ypcnt++;
key.size = sizeof(cnt) + 1;
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
/* Store insecure by name. */
tbuf[0] = _PW_KEYBYNAME;
len = strlen(pwd.pw_name);
memmove(tbuf + 1, pwd.pw_name, len);
key.size = len + 1;
if ((dp->put)(dp, &key, &data, method) == -1)
error("put");
}
/* Store insecure by number. */
tbuf[0] = _PW_KEYBYNUM;
memmove(tbuf + 1, &cnt, sizeof(cnt));
key.size = sizeof(cnt) + 1;
if ((dp->put)(dp, &key, &data, method) == -1)
error("put");
/* Store insecure by uid. */
tbuf[0] = _PW_KEYBYUID;
memmove(tbuf + 1, &pwd.pw_uid, sizeof(pwd.pw_uid));
key.size = sizeof(pwd.pw_uid) + 1;
if ((dp->put)(dp, &key, &data, methoduid) == -1)
error("put");
/* Store secure by name. */
tbuf[0] = _PW_KEYBYNAME;
len = strlen(pwd.pw_name);
memmove(tbuf + 1, pwd.pw_name, len);
key.size = len + 1;
if ((sdp->put)(sdp, &key, &sdata, method) == -1)
error("put");
/* Store secure by number. */
tbuf[0] = _PW_KEYBYNUM;
memmove(tbuf + 1, &cnt, sizeof(cnt));
key.size = sizeof(cnt) + 1;
if ((sdp->put)(sdp, &key, &sdata, method) == -1)
error("put");
/* Store secure by uid. */
tbuf[0] = _PW_KEYBYUID;
memmove(tbuf + 1, &pwd.pw_uid, sizeof(pwd.pw_uid));
key.size = sizeof(pwd.pw_uid) + 1;
if ((sdp->put)(sdp, &key, &sdata, methoduid) == -1)
error("put");
/* Store insecure and secure special plus and special minus */
if (pwd.pw_name[0] == '+' || pwd.pw_name[0] == '-') {
tbuf[0] = _PW_KEYYPBYNUM;
memmove(tbuf + 1, &ypcnt, sizeof(cnt));
ypcnt++;
key.size = sizeof(cnt) + 1;
if ((dp->put)(dp, &key, &data, method) == -1)
error("put");
if ((sdp->put)(sdp, &key, &sdata, method) == -1)
error("put");
}
}
/* Create original format password file entry */
if (makeold)
(void)fprintf(oldfp, "%s:*:%d:%d:%s:%s:%s\n",
@ -246,92 +372,19 @@ main(argc, argv)
data.size = 1;
tbuf[0] = _PW_KEYYPENABLED;
key.size = 1;
if ((dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1)
if ((dp->put)(dp, &key, &data, method) == -1)
error("put");
if ((sdp->put)(sdp, &key, &data, method) == -1)
error("put");
}
(void)(dp->close)(dp);
(void)(sdp->close)(sdp);
if (makeold) {
(void)fflush(oldfp);
(void)fclose(oldfp);
}
/* Open the temporary encrypted password database. */
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _SMP_DB);
edp = dbopen(buf,
O_RDWR|O_CREAT|O_EXCL, PERM_SECURE, DB_HASH, &openinfo);
if (!edp)
error(buf);
clean = FILE_SECURE;
rewind(fp);
ypcnt = 1;
for (cnt = 1; scan(fp, &pwd); ++cnt) {
/* Create secure data. */
p = buf;
COMPACT(pwd.pw_name);
COMPACT(pwd.pw_passwd);
memmove(p, &pwd.pw_uid, sizeof(int));
p += sizeof(int);
memmove(p, &pwd.pw_gid, sizeof(int));
p += sizeof(int);
memmove(p, &pwd.pw_change, sizeof(time_t));
p += sizeof(time_t);
COMPACT(pwd.pw_class);
COMPACT(pwd.pw_gecos);
COMPACT(pwd.pw_dir);
COMPACT(pwd.pw_shell);
memmove(p, &pwd.pw_expire, sizeof(time_t));
p += sizeof(time_t);
memmove(p, &pwd.pw_fields, sizeof pwd.pw_fields);
p += sizeof pwd.pw_fields;
data.size = p - buf;
/* Store secure by name. */
tbuf[0] = _PW_KEYBYNAME;
len = strlen(pwd.pw_name);
memmove(tbuf + 1, pwd.pw_name, len);
key.size = len + 1;
if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
error("put");
/* Store secure by number. */
tbuf[0] = _PW_KEYBYNUM;
memmove(tbuf + 1, &cnt, sizeof(cnt));
key.size = sizeof(cnt) + 1;
if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
error("put");
/* Store secure by uid. */
tbuf[0] = _PW_KEYBYUID;
memmove(tbuf + 1, &pwd.pw_uid, sizeof(pwd.pw_uid));
key.size = sizeof(pwd.pw_uid) + 1;
if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
error("put");
/* Store secure special plus and special minus */
if (pwd.pw_name[0] == '+' || pwd.pw_name[0] == '-') {
tbuf[0] = _PW_KEYYPBYNUM;
memmove(tbuf + 1, &ypcnt, sizeof(ypcnt));
ypcnt++;
key.size = sizeof(ypcnt) + 1;
if ((dp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
error("put");
}
}
/* If YP enabled, set flag. */
if(yp_enabled) {
buf[0] = yp_enabled + 2;
data.size = 1;
tbuf[0] = _PW_KEYYPENABLED;
key.size = 1;
if ((edp->put)(edp, &key, &data, R_NOOVERWRITE) == -1)
error("put");
}
(void)(edp->close)(edp);
/* Set master.passwd permissions, in case caller forgot. */
(void)fchmod(fileno(fp), S_IRUSR|S_IWUSR);
(void)fclose(fp);
@ -391,6 +444,38 @@ fmt: errno = EFTYPE; /* XXX */
return (1);
}
void
cp(from, to, mode)
char *from, *to;
mode_t mode;
{
static char buf[MAXBSIZE];
int from_fd, rcount, to_fd, wcount;
if ((from_fd = open(from, O_RDONLY, 0)) < 0)
error(from);
if ((to_fd = open(to, O_WRONLY|O_CREAT|O_EXCL, mode)) < 0)
error(to);
while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) {
wcount = write(to_fd, buf, rcount);
if (rcount != wcount || wcount == -1) {
int sverrno = errno;
(void)snprintf(buf, sizeof(buf), "%s to %s", from, to);
errno = sverrno;
error(buf);
}
}
if (rcount < 0) {
int sverrno = errno;
(void)snprintf(buf, sizeof(buf), "%s to %s", from, to);
errno = sverrno;
error(buf);
}
}
void
mv(from, to)
char *from, *to;
@ -439,6 +524,6 @@ void
usage()
{
(void)fprintf(stderr, "usage: pwd_mkdb [-p] [-d <dest dir>] file\n");
(void)fprintf(stderr, "usage: pwd_mkdb [-p] [-d <dest dir>] [-u <local username> file\n");
exit(1);
}

10
usr.sbin/rpc.yppasswdd/pw_util.c
View File

@ -138,7 +138,8 @@ pw_tmp()
}
int
pw_mkdb()
pw_mkdb(username)
char *username;
{
yp_error("rebuilding the database...");
@ -146,7 +147,12 @@ pw_mkdb()
/* Temporarily turn off SIGCHLD catching */
install_reaper(0);
if (!(pid = vfork())) {
execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
if(!username) {
execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
} else {
execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", "-u", username,
tempname, NULL);
}
pw_error(_PATH_PWD_MKDB, 1, 1);
return(-1);
}

4
usr.sbin/rpc.yppasswdd/yppasswdd_extern.h
View File

@ -29,7 +29,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: yppasswdd_extern.h,v 1.7 1996/06/23 22:20:43 wpaul Exp $
* $Id: yppasswdd_extern.h,v 1.4 1996/06/23 22:44:03 wpaul Exp $
*/
#include <sys/types.h>
@ -62,7 +62,7 @@ extern void reaper __P(( int ));
extern void install_reaper __P(( int ));
extern int pw_copy __P(( int, int, struct passwd * ));
extern int pw_lock __P(( void ));
extern int pw_mkdb __P(( void ));
extern int pw_mkdb __P(( char * ));
extern int pw_tmp __P(( void ));
extern void pw_init __P(( void ));
extern char *ok_shell __P (( char * ));

8
usr.sbin/rpc.yppasswdd/yppasswdd_server.c
View File

@ -29,7 +29,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: yppasswdd_server.c,v 1.17 1996/06/23 22:20:43 wpaul Exp $
* $Id: yppasswdd_server.c,v 1.5 1996/06/23 22:44:06 wpaul Exp $
*/
#include <stdio.h>
@ -61,7 +61,7 @@ struct dom_binding {};
#include "yppasswd_comm.h"
#ifndef lint
static const char rcsid[] = "$Id: yppasswdd_server.c,v 1.17 1996/06/23 22:20:43 wpaul Exp $";
static const char rcsid[] = "$Id: yppasswdd_server.c,v 1.5 1996/06/23 22:44:06 wpaul Exp $";
#endif /* not lint */
char *tempname;
@ -567,7 +567,7 @@ cleaning up and bailing out");
if (strcmp(passfile, _PATH_MASTERPASSWD)) {
rename(tempname, passfile);
} else {
if (pw_mkdb() < 0) {
if (pw_mkdb(argp->newpw.pw_name) < 0) {
yp_error("pwd_mkdb failed");
return(&result);
}
@ -718,7 +718,7 @@ cleaning up and bailing out");
if (strcmp(passfile, _PATH_MASTERPASSWD)) {
rename(tempname, passfile);
} else {
if (pw_mkdb() < 0) {
if (pw_mkdb(argp->newpw.pw_name) < 0) {
yp_error("pwd_mkdb failed");
return(result);
}

10
usr.sbin/vipw/pw_util.c
View File

@ -138,7 +138,8 @@ pw_tmp()
}
int
pw_mkdb()
pw_mkdb(username)
char *username;
{
int pstat;
pid_t pid;
@ -146,7 +147,12 @@ pw_mkdb()
warnx("rebuilding the database...");
(void)fflush(stderr);
if (!(pid = vfork())) {
execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
if(!username) {
execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
} else {
execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", "-u",
username, tempname, NULL);
}
pw_error(_PATH_PWD_MKDB, 1, 1);
}
pid = waitpid(pid, &pstat, 0);

2
usr.sbin/vipw/pw_util.h
View File

@ -37,6 +37,6 @@ void pw_edit __P((int));
void pw_error __P((char *, int, int));
void pw_init __P((void));
int pw_lock __P((void));
int pw_mkdb __P((void));
int pw_mkdb __P((char *));
void pw_prompt __P((void));
int pw_tmp __P((void));

2
usr.sbin/vipw/vipw.c
View File

@ -96,7 +96,7 @@ main(argc, argv)
warnx("no changes made");
pw_error((char *)NULL, 0, 0);
}
if (pw_mkdb())
if (pw_mkdb((char *)NULL))
break;
pw_prompt();
}