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1998-06-10  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/Makefile: Add nis-initgroups and compat-initgroups.
	* nis/libnss_compat.map: Add _nss_compat_initgroups.
	* nis/libnss_nis.map: Add _nss_nis_initgroups.
	* nis/nss_compat/compat-initgroups.c: New, faster then getgrent().
	* nis/nss_nis/nis-initgroups.c: Likewise.
	* libc-work/nss/nsswitch.c: Rename nss_lookup_function to
	__nss_lookup_function and make it public.
	* grp/initgroups.c: Rewrite, to use initgroups function from NSS
	module if exists, else use old method.

1998-06-19  Ulrich Drepper  <drepper@cygnus.com>

	* nss/getXXbyYY_r.c (lookup_function): Correct return in type
	definition.
	* nss/getXXent_r.c (set_function, end_function, get_function):
	Likewise.  Reported by Thorsten Kukuk.

	* sysdeps/unix/sysv/linux/sigstack.c: Mark sigstack as dangerous.

1998-06-19  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/unix/sysv/linux/sparc/Dist: Follow change from
	1998-06-16 and distribute kernel_termios.h.

	* nis/Makefile (distribute): Add nis_xdr.h.

1998-06-19  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/unix/sysv/linux/sigstack.c (sigstack): Disable for
	kernels that don't have sigaltstack.
This commit is contained in:
Ulrich Drepper 1998-06-19 13:01:35 +00:00
parent 977bfd77e6
commit 899d423eaf
13 changed files with 1087 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
ChangeLog
View File

@ -1,3 +1,36 @@
1998-06-10 Thorsten Kukuk <kukuk@vt.uni-paderborn.de>
* nis/Makefile: Add nis-initgroups and compat-initgroups.
* nis/libnss_compat.map: Add _nss_compat_initgroups.
* nis/libnss_nis.map: Add _nss_nis_initgroups.
* nis/nss_compat/compat-initgroups.c: New, faster then getgrent().
* nis/nss_nis/nis-initgroups.c: Likewise.
* libc-work/nss/nsswitch.c: Rename nss_lookup_function to
__nss_lookup_function and make it public.
* grp/initgroups.c: Rewrite, to use initgroups function from NSS
module if exists, else use old method.
1998-06-19 Ulrich Drepper <drepper@cygnus.com>
* nss/getXXbyYY_r.c (lookup_function): Correct return in type
definition.
* nss/getXXent_r.c (set_function, end_function, get_function):
Likewise. Reported by Thorsten Kukuk.
* sysdeps/unix/sysv/linux/sigstack.c: Mark sigstack as dangerous.
1998-06-19 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* sysdeps/unix/sysv/linux/sparc/Dist: Follow change from
1998-06-16 and distribute kernel_termios.h.
* nis/Makefile (distribute): Add nis_xdr.h.
1998-06-19 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* sysdeps/unix/sysv/linux/sigstack.c (sigstack): Disable for
kernels that don't have sigaltstack.
1998-06-19 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/generic/bits/sem.h: Don't define union semun.

184
grp/initgroups.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1989, 1991, 1993, 1996, 1997 Free Software Foundation, Inc.
/* Copyright (C) 1989, 91, 93, 96, 97, 98 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -23,8 +23,102 @@
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <nsswitch.h>
/* Type of the lookup function. */
typedef enum nss_status (*initgroups_function) (const char *, gid_t,
long int *, long int *,
gid_t *, long int, int *);
/* Prototype for the setgrent functions we use here. */
typedef enum nss_status (*set_function) (void);
/* Prototype for the endgrent functions we use here. */
typedef enum nss_status (*end_function) (void);
/* Prototype for the setgrent functions we use here. */
typedef enum nss_status (*get_function) (struct group *, char *,
size_t, int *);
/* The lookup function for the first entry of this service. */
extern int __nss_group_lookup (service_user **nip, const char *name,
void **fctp);
extern void *__nss_lookup_function (service_user *ni, const char *fct_name);
extern service_user *__nss_group_database;
static enum nss_status
compat_call (service_user *nip, const char *user, gid_t group, long int *start,
long int *size, gid_t *groups, long int limit, int *errnop)
{
struct group grpbuf, *g;
size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
char *tmpbuf;
enum nss_status status;
set_function setgrent_fct;
get_function getgrent_fct;
end_function endgrent_fct;
setgrent_fct = __nss_lookup_function (nip, "setgrent");
status = (*setgrent_fct) ();
if (status != NSS_STATUS_SUCCESS)
return status;
getgrent_fct = __nss_lookup_function (nip, "getgrent_r");
endgrent_fct = __nss_lookup_function (nip, "endgrent");
tmpbuf = __alloca (buflen);
do
{
while ((status =
(*getgrent_fct) (&grpbuf, tmpbuf, buflen, errnop)) ==
NSS_STATUS_TRYAGAIN && *errnop == ERANGE)
{
buflen *= 2;
tmpbuf = __alloca (buflen);
}
if (status != NSS_STATUS_SUCCESS)
goto done;
g = &grpbuf;
if (g->gr_gid != group)
{
char **m;
for (m = g->gr_mem; *m != NULL; ++m)
if (strcmp (*m, user) == 0)
{
/* Matches user. Insert this group. */
if (*start == *size && limit <= 0)
{
/* Need a bigger buffer. */
groups = realloc (groups, *size * sizeof (*groups));
if (groups == NULL)
goto done;
*size *= 2;
}
groups[*start] = g->gr_gid;
*start += 1;
if (*start == limit)
/* Can't take any more groups; stop searching. */
goto done;
break;
}
}
}
while (status == NSS_STATUS_SUCCESS);
done:
(*endgrent_fct) ();
return NSS_STATUS_SUCCESS;
}
/* Initialize the group set for the current user
by reading the group database and using all groups
of which USER is a member. Also include GROUP. */
@ -40,76 +134,58 @@ initgroups (user, group)
#else
struct group grpbuf, *g;
size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
char *tmpbuf;
size_t n;
size_t ngroups;
service_user *nip = NULL;
initgroups_function fct;
enum nss_status status = NSS_STATUS_UNAVAIL;
int no_more;
/* Start is one, because we have the first group as parameter. */
long int start = 1;
long int size;
gid_t *groups;
int status;
#ifdef NGROUPS_MAX
# define limit NGROUPS_MAX
ngroups = limit;
size = limit;
#else
long int limit = sysconf (_SC_NGROUPS_MAX);
if (limit > 0)
ngroups = limit;
size = limit;
else
/* No fixed limit on groups. Pick a starting buffer size. */
ngroups = 16;
size = 16;
#endif
groups = __alloca (ngroups * sizeof *groups);
tmpbuf = __alloca (buflen);
groups = malloc (size * sizeof (gid_t *));
setgrent ();
groups[0] = group;
n = 0;
groups[n++] = group;
do
if (__nss_group_database != NULL)
{
while ((status = __getgrent_r (&grpbuf, tmpbuf, buflen, &g)) != 0
&& errno == ERANGE)
{
buflen *= 2;
tmpbuf = __alloca (buflen);
}
if (status == 0 && g->gr_gid != group)
{
char **m;
for (m = g->gr_mem; *m != NULL; ++m)
if (strcmp (*m, user) == 0)
{
/* Matches user. Insert this group. */
if (n == ngroups && limit <= 0)
{
/* Need a bigger buffer. */
gid_t *newgrp;
newgrp = __alloca (ngroups * 2 * sizeof *groups);
groups = memcpy (newgrp, groups, ngroups * sizeof *groups);
ngroups *= 2;
}
groups[n++] = g->gr_gid;
if (n == limit)
/* Can't take any more groups; stop searching. */
goto done;
break;
}
}
no_more = 0;
nip = __nss_group_database;
}
while (status == 0);
else
no_more = __nss_database_lookup ("group", NULL,
"compat [NOTFOUND=return] files", &nip);
done:
endgrent ();
while (! no_more)
{
fct = __nss_lookup_function (nip, "initgroups");
return setgroups (n, groups);
if (fct == NULL)
status = compat_call (nip, user, group, &start, &size, groups,
limit, &errno);
else
status = (*fct) (user, group, &start, &size, groups, limit,
&errno);
if (nip->next == NULL)
no_more = -1;
else
nip = nip->next;
}
return setgroups (start, groups);
#endif
}

7
nis/Makefile
View File

@ -23,7 +23,7 @@ subdir := nis
headers := $(wildcard rpcsvc/*.[hx])
distribute := nss-nis.h nss-nisplus.h nis_intern.h Banner \
nisplus-parser.h nis_cache2.h
nisplus-parser.h nis_cache2.h nis_xdr.h
# These are the databases available for the nis (and perhaps later nisplus)
# service. This must be a superset of the services in nss.
@ -55,10 +55,11 @@ libnsl-routines = yp_xdr ypclnt ypupdate_xdr \
nis_clone_res
libnsl-map = libnsl.map
libnss_compat-routines := $(addprefix compat-,grp pwd spwd) nisplus-parser
libnss_compat-routines := $(addprefix compat-,grp pwd spwd initgroups) \
nisplus-parser
libnss_compat-inhibit-o = $(filter-out .os,$(object-suffixes))
libnss_nis-routines := $(addprefix nis-,$(databases))
libnss_nis-routines := $(addprefix nis-,$(databases)) nis-initgroups
libnss_nis-inhibit-o = $(filter-out .os,$(object-suffixes))
libnss_nisplus-routines := $(addprefix nisplus-,$(databases)) nisplus-parser

4
nis/libnss_compat.map
View File

@ -3,8 +3,8 @@ GLIBC_2.0 {
_nss_compat_endgrent; _nss_compat_endpwent; _nss_compat_endspent;
_nss_compat_getgrent_r; _nss_compat_getgrgid_r; _nss_compat_getgrnam_r;
_nss_compat_getpwent_r; _nss_compat_getpwnam_r; _nss_compat_getpwuid_r;
_nss_compat_getspent_r; _nss_compat_getspnam_r; _nss_compat_setgrent;
_nss_compat_setpwent; _nss_compat_setspent;
_nss_compat_getspent_r; _nss_compat_getspnam_r; _nss_compat_initgroups;
_nss_compat_setgrent; _nss_compat_setpwent; _nss_compat_setspent;
local:
*;

10
nis/libnss_nis.map
View File

@ -14,11 +14,11 @@ GLIBC_2.0 {
_nss_nis_getpwnam_r; _nss_nis_getpwuid_r; _nss_nis_getrpcbyname_r;
_nss_nis_getrpcbynumber_r; _nss_nis_getrpcent_r; _nss_nis_getsecretkey;
_nss_nis_getservbyname_r; _nss_nis_getservbyport_r; _nss_nis_getservent_r;
_nss_nis_getspent_r; _nss_nis_getspnam_r; _nss_nis_netname2user;
_nss_nis_setaliasent; _nss_nis_setetherent; _nss_nis_setgrent;
_nss_nis_sethostent; _nss_nis_setnetent; _nss_nis_setnetgrent;
_nss_nis_setprotoent; _nss_nis_setpwent; _nss_nis_setrpcent;
_nss_nis_setservent; _nss_nis_setspent;
_nss_nis_getspent_r; _nss_nis_getspnam_r; _nss_nis_initgroups;
_nss_nis_netname2user; _nss_nis_setaliasent; _nss_nis_setetherent;
_nss_nis_setgrent; _nss_nis_sethostent; _nss_nis_setnetent;
_nss_nis_setnetgrent; _nss_nis_setprotoent; _nss_nis_setpwent;
_nss_nis_setrpcent; _nss_nis_setservent; _nss_nis_setspent;
local:
*;

687
nis/nss_compat/compat-initgroups.c Normal file
View File

@ -0,0 +1,687 @@
/* Copyright (C) 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <fcntl.h>
#include <nss.h>
#include <grp.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include <rpcsvc/nis.h>
#include <nsswitch.h>
#include "nss-nisplus.h"
#include "nisplus-parser.h"
static service_user *ni = NULL;
static bool_t use_nisplus = FALSE; /* default: group_compat: nis */
static nis_name grptable = NULL; /* Name of the group table */
static size_t grptablelen = 0;
/* Get the declaration of the parser function. */
#define ENTNAME grent
#define STRUCTURE group
#define EXTERN_PARSER
#include <nss/nss_files/files-parse.c>
/* Structure for remembering -group members ... */
#define BLACKLIST_INITIAL_SIZE 512
#define BLACKLIST_INCREMENT 256
struct blacklist_t
{
char *data;
int current;
int size;
};
struct ent_t
{
bool_t nis;
bool_t nis_first;
char *oldkey;
int oldkeylen;
nis_result *result;
FILE *stream;
struct blacklist_t blacklist;
};
typedef struct ent_t ent_t;
/* Prototypes for local functions. */
static void blacklist_store_name (const char *, ent_t *);
static int in_blacklist (const char *, int, ent_t *);
static enum nss_status
_nss_first_init (void)
{
if (ni == NULL)
{
__nss_database_lookup ("group_compat", NULL, "nis", &ni);
use_nisplus = (strcmp (ni->name, "nisplus") == 0);
}
if (grptable == NULL)
{
static const char key[] = "group.org_dir.";
const char *local_dir = nis_local_directory ();
size_t len_local_dir = strlen (local_dir);
grptable = malloc (sizeof (key) + len_local_dir);
if (grptable == NULL)
return NSS_STATUS_TRYAGAIN;
grptablelen = ((char *) mempcpy (mempcpy (grptable,
key, sizeof (key) - 1),
local_dir, len_local_dir + 1)
- grptable) - 1;
}
return NSS_STATUS_SUCCESS;
}
static enum nss_status
internal_setgrent (ent_t *ent)
{
enum nss_status status = NSS_STATUS_SUCCESS;
ent->nis = ent->nis_first = 0;
if (_nss_first_init () != NSS_STATUS_SUCCESS)
return NSS_STATUS_UNAVAIL;
if (ent->oldkey != NULL)
{
free (ent->oldkey);
ent->oldkey = NULL;
ent->oldkeylen = 0;
}
if (ent->result != NULL)
{
nis_freeresult (ent->result);
ent->result = NULL;
}
if (ent->blacklist.data != NULL)
{
ent->blacklist.current = 1;
ent->blacklist.data[0] = '|';
ent->blacklist.data[1] = '\0';
}
else
ent->blacklist.current = 0;
if (ent->stream == NULL)
{
ent->stream = fopen ("/etc/group", "r");
if (ent->stream == NULL)
status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
else
{
/* We have to make sure the file is `closed on exec'. */
int result, flags;
result = flags = fcntl (fileno (ent->stream), F_GETFD, 0);
if (result >= 0)
{
flags |= FD_CLOEXEC;
result = fcntl (fileno (ent->stream), F_SETFD, flags);
}
if (result < 0)
{
/* Something went wrong. Close the stream and return a
failure. */
fclose (ent->stream);
ent->stream = NULL;
status = NSS_STATUS_UNAVAIL;
}
}
}
else
rewind (ent->stream);
return status;
}
static enum nss_status
internal_endgrent (ent_t *ent)
{
if (ent->stream != NULL)
{
fclose (ent->stream);
ent->stream = NULL;
}
ent->nis = ent->nis_first = 0;
if (ent->oldkey != NULL)
{
free (ent->oldkey);
ent->oldkey = NULL;
ent->oldkeylen = 0;
}
if (ent->result != NULL)
{
nis_freeresult (ent->result);
ent->result = NULL;
}
if (ent->blacklist.data != NULL)
{
ent->blacklist.current = 1;
ent->blacklist.data[0] = '|';
ent->blacklist.data[1] = '\0';
}
else
ent->blacklist.current = 0;
return NSS_STATUS_SUCCESS;
}
static enum nss_status
getgrent_next_nis (struct group *result, ent_t *ent, char *buffer,
size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
char *domain;
char *outkey, *outval;
int outkeylen, outvallen, parse_res;
char *p;
if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
{
ent->nis = 0;
return NSS_STATUS_NOTFOUND;
}
do
{
char *save_oldkey;
int save_oldlen;
bool_t save_nis_first;
if (ent->nis_first)
{
if (yp_first (domain, "group.byname", &outkey, &outkeylen,
&outval, &outvallen) != YPERR_SUCCESS)
{
ent->nis = 0;
return NSS_STATUS_UNAVAIL;
}
if ( buflen < ((size_t) outvallen + 1))
{
free (outval);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
save_oldkey = ent->oldkey;
save_oldlen = ent->oldkeylen;
save_nis_first = TRUE;
ent->oldkey = outkey;
ent->oldkeylen = outkeylen;
ent->nis_first = FALSE;
}
else
{
if (yp_next (domain, "group.byname", ent->oldkey, ent->oldkeylen,
&outkey, &outkeylen, &outval, &outvallen)
!= YPERR_SUCCESS)
{
ent->nis = 0;
return NSS_STATUS_NOTFOUND;
}
if ( buflen < ((size_t) outvallen + 1))
{
free (outval);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
save_oldkey = ent->oldkey;
save_oldlen = ent->oldkeylen;
save_nis_first = FALSE;
ent->oldkey = outkey;
ent->oldkeylen = outkeylen;
}
/* Copy the found data to our buffer... */
p = strncpy (buffer, outval, buflen);
/* ...and free the data. */
free (outval);
while (isspace (*p))
++p;
parse_res = _nss_files_parse_grent (p, result, data, buflen, errnop);
if (parse_res == -1)
{
free (ent->oldkey);
ent->oldkey = save_oldkey;
ent->oldkeylen = save_oldlen;
ent->nis_first = save_nis_first;
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
else
{
if (!save_nis_first)
free (save_oldkey);
}
if (parse_res &&
in_blacklist (result->gr_name, strlen (result->gr_name), ent))
parse_res = 0; /* if result->gr_name in blacklist,search next entry */
}
while (!parse_res);
return NSS_STATUS_SUCCESS;
}
static enum nss_status
getgrent_next_nisplus (struct group *result, ent_t *ent, char *buffer,
size_t buflen, int *errnop)
{
int parse_res;
do
{
nis_result *save_oldres;
bool_t save_nis_first;
if (ent->nis_first)
{
save_oldres = ent->result;
save_nis_first = TRUE;
ent->result = nis_first_entry(grptable);
if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
{
ent->nis = 0;
return niserr2nss (ent->result->status);
}
ent->nis_first = FALSE;
}
else
{
nis_result *res;
save_oldres = ent->result;
save_nis_first = FALSE;
res = nis_next_entry(grptable, &ent->result->cookie);
ent->result = res;
if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS)
{
ent->nis = 0;
return niserr2nss (ent->result->status);
}
}
parse_res = _nss_nisplus_parse_grent (ent->result, 0, result,
buffer, buflen, errnop);
if (parse_res == -1)
{
nis_freeresult (ent->result);
ent->result = save_oldres;
ent->nis_first = save_nis_first;
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
else
{
if (!save_nis_first)
nis_freeresult (save_oldres);
}
if (parse_res &&
in_blacklist (result->gr_name, strlen (result->gr_name), ent))
parse_res = 0; /* if result->gr_name in blacklist,search next entry */
}
while (!parse_res);
return NSS_STATUS_SUCCESS;
}
/* This function handle the +group entrys in /etc/group */
static enum nss_status
getgrnam_plusgroup (const char *name, struct group *result, char *buffer,
size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
int parse_res;
if (use_nisplus) /* Do the NIS+ query here */
{
nis_result *res;
char buf[strlen (name) + 24 + grptablelen];
sprintf(buf, "[name=%s],%s", name, grptable);
res = nis_list(buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
if (niserr2nss (res->status) != NSS_STATUS_SUCCESS)
{
enum nss_status status = niserr2nss (res->status);
nis_freeresult (res);
return status;
}
parse_res = _nss_nisplus_parse_grent (res, 0, result, buffer, buflen,
errnop);
if (parse_res == -1)
{
nis_freeresult (res);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
nis_freeresult (res);
}
else /* Use NIS */
{
char *domain, *outval, *p;
int outvallen;
if (yp_get_default_domain (&domain) != YPERR_SUCCESS)
return NSS_STATUS_NOTFOUND;
if (yp_match (domain, "group.byname", name, strlen (name),
&outval, &outvallen) != YPERR_SUCCESS)
return NSS_STATUS_NOTFOUND;
if (buflen < ((size_t) outvallen + 1))
{
free (outval);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
/* Copy the found data to our buffer... */
p = strncpy (buffer, outval, buflen);
/* ... and free the data. */
free (outval);
while (isspace (*p))
++p;
parse_res = _nss_files_parse_grent (p, result, data, buflen, errnop);
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
}
if (parse_res)
/* We found the entry. */
return NSS_STATUS_SUCCESS;
else
return NSS_STATUS_RETURN;
}
static enum nss_status
getgrent_next_file (struct group *result, ent_t *ent,
char *buffer, size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
while (1)
{
fpos_t pos;
int parse_res = 0;
char *p;
do
{
fgetpos (ent->stream, &pos);
buffer[buflen - 1] = '\xff';
p = fgets (buffer, buflen, ent->stream);
if (p == NULL && feof (ent->stream))
return NSS_STATUS_NOTFOUND;
if (p == NULL || buffer[buflen - 1] != '\xff')
{
fsetpos (ent->stream, &pos);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
/* Terminate the line for any case. */
buffer[buflen - 1] = '\0';
/* Skip leading blanks. */
while (isspace (*p))
++p;
}
while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
/* Parse the line. If it is invalid, loop to
get the next line of the file to parse. */
!(parse_res = _nss_files_parse_grent (p, result, data, buflen,
errnop)));
if (parse_res == -1)
{
/* The parser ran out of space. */
fsetpos (ent->stream, &pos);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
if (result->gr_name[0] != '+' && result->gr_name[0] != '-')
/* This is a real entry. */
break;
/* -group */
if (result->gr_name[0] == '-' && result->gr_name[1] != '\0'
&& result->gr_name[1] != '@')
{
blacklist_store_name (&result->gr_name[1], ent);
continue;
}
/* +group */
if (result->gr_name[0] == '+' && result->gr_name[1] != '\0'
&& result->gr_name[1] != '@')
{
enum nss_status status;
/* Store the group in the blacklist for the "+" at the end of
/etc/group */
blacklist_store_name (&result->gr_name[1], ent);
status = getgrnam_plusgroup (&result->gr_name[1], result, buffer,
buflen, errnop);
if (status == NSS_STATUS_SUCCESS) /* We found the entry. */
break;
else
if (status == NSS_STATUS_RETURN /* We couldn't parse the entry */
|| status == NSS_STATUS_NOTFOUND) /* No group in NIS */
continue;
else
{
if (status == NSS_STATUS_TRYAGAIN)
{
/* The parser ran out of space. */
fsetpos (ent->stream, &pos);
*errnop = ERANGE;
}
return status;
}
}
/* +:... */
if (result->gr_name[0] == '+' && result->gr_name[1] == '\0')
{
ent->nis = TRUE;
ent->nis_first = TRUE;
if (use_nisplus)
return getgrent_next_nisplus (result, ent, buffer, buflen, errnop);
else
return getgrent_next_nis (result, ent, buffer, buflen, errnop);
}
}
return NSS_STATUS_SUCCESS;
}
static enum nss_status
internal_getgrent_r (struct group *gr, ent_t *ent, char *buffer,
size_t buflen, int *errnop)
{
if (ent->nis)
{
if (use_nisplus)
return getgrent_next_nisplus (gr, ent, buffer, buflen, errnop);
else
return getgrent_next_nis (gr, ent, buffer, buflen, errnop);
}
else
return getgrent_next_file (gr, ent, buffer, buflen, errnop);
}
enum nss_status
_nss_compat_initgroups (const char *user, gid_t group, long int *start,
long int *size, gid_t *groups, long int limit,
int *errnop)
{
struct group grpbuf, *g;
size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
char *tmpbuf;
enum nss_status status;
ent_t intern = {0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0}};
status = internal_setgrent (&intern);
if (status != NSS_STATUS_SUCCESS)
return status;
tmpbuf = __alloca (buflen);
do
{
while ((status =
internal_getgrent_r (&grpbuf, &intern, tmpbuf, buflen,
errnop)) == NSS_STATUS_TRYAGAIN
&& *errnop == ERANGE)
{
buflen *= 2;
tmpbuf = __alloca (buflen);
}
if (status != NSS_STATUS_SUCCESS)
goto done;
g = &grpbuf;
if (g->gr_gid != group)
{
char **m;
for (m = g->gr_mem; *m != NULL; ++m)
if (strcmp (*m, user) == 0)
{
/* Matches user. Insert this group. */
if (*start == *size && limit <= 0)
{
/* Need a bigger buffer. */
groups = realloc (groups, *size * sizeof (*groups));
if (groups == NULL)
goto done;
*size *= 2;
}
groups[*start] = g->gr_gid;
*start += 1;
if (*start == limit)
/* Can't take any more groups; stop searching. */
goto done;
break;
}
}
}
while (status == NSS_STATUS_SUCCESS);
done:
internal_endgrent (&intern);
return NSS_STATUS_SUCCESS;
}
/* Support routines for remembering -@netgroup and -user entries.
The names are stored in a single string with `|' as separator. */
static void
blacklist_store_name (const char *name, ent_t *ent)
{
int namelen = strlen (name);
char *tmp;
/* first call, setup cache */
if (ent->blacklist.size == 0)
{
ent->blacklist.size = MAX (BLACKLIST_INITIAL_SIZE, 2 * namelen);
ent->blacklist.data = malloc (ent->blacklist.size);
if (ent->blacklist.data == NULL)
return;
ent->blacklist.data[0] = '|';
ent->blacklist.data[1] = '\0';
ent->blacklist.current = 1;
}
else
{
if (in_blacklist (name, namelen, ent))
return; /* no duplicates */
if (ent->blacklist.current + namelen + 1 >= ent->blacklist.size)
{
ent->blacklist.size += MAX (BLACKLIST_INCREMENT, 2 * namelen);
tmp = realloc (ent->blacklist.data, ent->blacklist.size);
if (tmp == NULL)
{
free (ent->blacklist.data);
ent->blacklist.size = 0;
return;
}
ent->blacklist.data = tmp;
}
}
tmp = stpcpy (ent->blacklist.data + ent->blacklist.current, name);
*tmp++ = '|';
*tmp = '\0';
ent->blacklist.current += namelen + 1;
return;
}
/* returns TRUE if ent->blacklist contains name, else FALSE */
static bool_t
in_blacklist (const char *name, int namelen, ent_t *ent)
{
char buf[namelen + 3];
char *cp;
if (ent->blacklist.data == NULL)
return FALSE;
buf[0] = '|';
cp = stpcpy (&buf[1], name);
*cp++= '|';
*cp = '\0';
return strstr (ent->blacklist.data, buf) != NULL;
}

204
nis/nss_nis/nis-initgroups.c Normal file
View File

@ -0,0 +1,204 @@
/* Copyright (C) 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <nss.h>
#include <grp.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "nss-nis.h"
/* Get the declaration of the parser function. */
#define ENTNAME grent
#define STRUCTURE group
#define EXTERN_PARSER
#include <nss/nss_files/files-parse.c>
struct response_t
{
char *val;
struct response_t *next;
};
struct intern_t
{
struct response_t *start;
struct response_t *next;
};
typedef struct intern_t intern_t;
static int
saveit (int instatus, char *inkey, int inkeylen, char *inval,
int invallen, char *indata)
{
intern_t *intern = (intern_t *) indata;
if (instatus != YP_TRUE)
return instatus;
if (inkey && inkeylen > 0 && inval && invallen > 0)
{
if (intern->start == NULL)
{
intern->start = malloc (sizeof (struct response_t));
intern->next = intern->start;
}
else
{
intern->next->next = malloc (sizeof (struct response_t));
intern->next = intern->next->next;
}
intern->next->next = NULL;
intern->next->val = malloc (invallen + 1);
strncpy (intern->next->val, inval, invallen);
intern->next->val[invallen] = '\0';
}
return 0;
}
static enum nss_status
internal_setgrent (intern_t *intern)
{
char *domainname;
struct ypall_callback ypcb;
enum nss_status status;
if (yp_get_default_domain (&domainname))
return NSS_STATUS_UNAVAIL;
intern->start = NULL;
ypcb.foreach = saveit;
ypcb.data = (char *) intern;
status = yperr2nss (yp_all (domainname, "group.byname", &ypcb));
intern->next = intern->start;
return status;
}
static enum nss_status
internal_getgrent_r (struct group *grp, char *buffer, size_t buflen,
int *errnop, intern_t *intern)
{
struct parser_data *data = (void *) buffer;
int parse_res;
char *p;
if (intern->start == NULL)
internal_setgrent (intern);
/* Get the next entry until we found a correct one. */
do
{
if (intern->next == NULL)
return NSS_STATUS_NOTFOUND;
p = strncpy (buffer, intern->next->val, buflen);
while (isspace (*p))
++p;
parse_res = _nss_files_parse_grent (p, grp, data, buflen, errnop);
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
intern->next = intern->next->next;
}
while (!parse_res);
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_initgroups (const char *user, gid_t group, long int *start,
long int *size, gid_t *groups, long int limit,
int *errnop)
{
struct group grpbuf, *g;
size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
char *tmpbuf;
enum nss_status status;
intern_t intern = { NULL, NULL };
status = internal_setgrent (&intern);
if (status != NSS_STATUS_SUCCESS)
return status;
tmpbuf = __alloca (buflen);
do
{
while ((status =
internal_getgrent_r (&grpbuf, tmpbuf, buflen, errnop,
&intern)) == NSS_STATUS_TRYAGAIN
&& *errnop == ERANGE)
{
buflen *= 2;
tmpbuf = __alloca (buflen);
}
if (status != NSS_STATUS_SUCCESS)
goto done;
g = &grpbuf;
if (g->gr_gid != group)
{
char **m;
for (m = g->gr_mem; *m != NULL; ++m)
if (strcmp (*m, user) == 0)
{
/* Matches user. Insert this group. */
if (*start == *size && limit <= 0)
{
/* Need a bigger buffer. */
groups = realloc (groups, *size * sizeof (*groups));
if (groups == NULL)
goto done;
*size *= 2;
}
groups[*start] = g->gr_gid;
*start += 1;
if (*start == limit)
/* Can't take any more groups; stop searching. */
goto done;
break;
}
}
}
while (status == NSS_STATUS_SUCCESS);
done:
while (intern.start != NULL)
{
if (intern.start->val != NULL)
free (intern.start->val);
intern.next = intern.start;
intern.start = intern.start->next;
free (intern.next);
}
return NSS_STATUS_SUCCESS;
}

4
nss/getXXbyYY_r.c
View File

@ -82,8 +82,8 @@
/* Type of the lookup function we need here. */
typedef int (*lookup_function) (ADD_PARAMS, LOOKUP_TYPE *, char *, size_t,
int * H_ERRNO_PARM);
typedef enum nss_status (*lookup_function) (ADD_PARAMS, LOOKUP_TYPE *, char *,
size_t, int * H_ERRNO_PARM);
/* Some usages of this file might use this variable. */
extern struct __res_state _res;

8
nss/getXXent_r.c
View File

@ -85,14 +85,14 @@
#endif
/* Prototype for the setXXXent functions we use here. */
typedef int (*set_function) (STAYOPEN);
typedef enum nss_status (*set_function) (STAYOPEN);
/* Prototype for the endXXXent functions we use here. */
typedef int (*end_function) (void);
typedef enum nss_status (*end_function) (void);
/* Prototype for the setXXXent functions we use here. */
typedef int (*get_function) (LOOKUP_TYPE *, char *, size_t, int *
H_ERRNO_PARM);
typedef enum nss_status (*get_function) (LOOKUP_TYPE *, char *, size_t, int *
H_ERRNO_PARM);
/* This handle for the NSS data base is shared between all

13
nss/nsswitch.c
View File

@ -35,8 +35,6 @@
#include "nsswitch.h"
/* Prototypes for the local functions. */
static void *nss_lookup_function (service_user *ni, const char *fct_name)
internal_function;
static name_database *nss_parse_file (const char *fname) internal_function;
static name_database_entry *nss_getline (char *line) internal_function;
static service_user *nss_parse_service_list (const char *line)
@ -140,7 +138,7 @@ __nss_database_lookup (const char *database, const char *alternate_name,
int
__nss_lookup (service_user **ni, const char *fct_name, void **fctp)
{
*fctp = nss_lookup_function (*ni, fct_name);
*fctp = __nss_lookup_function (*ni, fct_name);
while (*fctp == NULL
&& nss_next_action (*ni, NSS_STATUS_UNAVAIL) == NSS_ACTION_CONTINUE
@ -148,7 +146,7 @@ __nss_lookup (service_user **ni, const char *fct_name, void **fctp)
{
*ni = (*ni)->next;
*fctp = nss_lookup_function (*ni, fct_name);
*fctp = __nss_lookup_function (*ni, fct_name);
}
return *fctp != NULL ? 0 : (*ni)->next == NULL ? 1 : -1;
@ -187,7 +185,7 @@ __nss_next (service_user **ni, const char *fct_name, void **fctp, int status,
{
*ni = (*ni)->next;
*fctp = nss_lookup_function (*ni, fct_name);
*fctp = __nss_lookup_function (*ni, fct_name);
}
while (*fctp == NULL
&& nss_next_action (*ni, NSS_STATUS_UNAVAIL) == NSS_ACTION_CONTINUE
@ -310,9 +308,8 @@ known_compare (const void *p1, const void *p2)
}
static void *
internal_function
nss_lookup_function (service_user *ni, const char *fct_name)
void *
__nss_lookup_function (service_user *ni, const char *fct_name)
{
void **found, *result;

3
nss/nsswitch.h
View File

@ -127,5 +127,8 @@ int __nss_lookup (service_user **ni, const char *fct_name, void **fctp);
int __nss_next (service_user **ni, const char *fct_name, void **fctp,
int status, int all_values);
/* Search for the service described in NI for a function named FCT_NAME
and return a pointer to this function if successful. */
void *__nss_lookup_function (service_user *ni, const char *fct_name);
#endif /* nsswitch.h */

7
sysdeps/unix/sysv/linux/sigstack.c
View File

@ -19,8 +19,10 @@
Boston, MA 02111-1307, USA. */
#include <signal.h>
#include <sys/syscall.h>
#ifdef __NR_sigaltstack
int
sigstack (ss, oss)
const struct sigstack *ss;
@ -59,3 +61,8 @@ sigstack (ss, oss)
return result;
}
link_warning (sigstack, "the `sigstack' function is dangerous. `sigaltstack' should be used instead.")
#else
# include <sysdeps/generic/sigstack.c>
#endif

2
sysdeps/unix/sysv/linux/sparc/Dist
View File

@ -1,2 +1,2 @@
sys/kernel_termios.h
kernel_termios.h
sys/trap.h