glibc/grp/initgroups.c
Ulrich Drepper 50304ef057 Update.
1998-07-16 10:23  Ulrich Drepper  <drepper@cygnus.com>

	* argp/argp-fmtstream.c: Unify names of used global functions.
	* argp/argp-help.c: Likewise.
	* assert/assert-perr.c: Likewise
	* assert/assert.c: Likewise
	* dirent/scandir.c: Likewise
	* dirent/scandir64.c: Likewise
	* dirent/versionsort.c: Likewise
	* dirent/versionsort64.c: Likewise
	* gmon/bb_exit_func.c: Likewise.
	* gmon/gmon.c: Likewise.
	* grp/initgroups.c: Likewise.
	* iconv/gconv_conf.c: Likewise.
	* inet/getnameinfo.c: Likewise.
	* inet/getnetgrent_r.c: Likewise.
	* inet/inet_ntoa.c: Likewise.
	* inet/rcmd.c: Likewise.
	* inet/rexec.c: Likewise.
	* inet/ruserpass.c: Likewise.
	* io/fts.c: Likewise.
	* io/ftw.c: Likewise.
	* io/ftw64.c: Likewise.
	* io/getdirname.c: Likewise.
	* io/getwd.c: Likewise.
	* io/lockf.c: Likewise.
	* libio/iofdopen.c: Likewise.
	* libio/iopopen.c: Likewise.
	* login/utmp_daemon.c: Likewise.
	* malloc/mtrace.c: Likewise.
	* malloc/obstack.c
	* misc/daemon.c: Likewise.
	* misc/efgcvt_r.c: Likewise.
	* misc/err.c: Likewise.
	* misc/error.c: Likewise.
	* misc/fstab.c: Likewise.
	* misc/getpass.c: Likewise.
	* misc/getttyent.c: Likewise.
	* misc/mntent_r.c: Likewise.
	* misc/search.h: Likewise.
	* misc/syslog.c: Likewise.
	* nscd/nscd_getgr_r.c: Likewise.
	* nscd/nscd_getpw_r.c: Likewise.
	* posix/getpgrp.c: Likewise.
	* posix/wordexp.c: Likewise.
	* pwd/fgetpwent_r.c: Likewise.
	* pwd/getpw.c: Likewise.
	* resolv/herror.c: Likewise.
	* resolv/res_init.c: Likewise.
	* shadow/fgetspent_r.c: Likewise.
	* shadow/lckpwdf.c: Likewise.
	* signal/sigrelse.c: Likewise.
	* stdio-common/asprintf.c: Likewise.
	* stdio-common/dprintf.c: Likewise.
	* stdio-common/getw.c: Likewise.
	* stdio-common/putw.c: Likewise.
	* stdio-common/snprintf.c: Likewise.
	* stdio-common/sprintf.c: Likewise.
	* stdio-common/sscanf.c: Likewise.
	* stdlib/lrand48_r.c: Likewise.
	* stdlib/mrand48_r.c: Likewise.
	* string/argz-replace.c: Likewise.
	* string/envz.c: Likewise.
	* sunrpc/auth_des.c: Likewise.
	* sunrpc/auth_unix.c: Likewise.
	* sunrpc/bindrsvprt.c: Likewise.
	* sunrpc/clnt_gen.c: Likewise.
	* sunrpc/clnt_perr.c: Likewise.
	* sunrpc/clnt_simp.c: Likewise.
	* sunrpc/clnt_tcp.c: Likewise.
	* sunrpc/clnt_udp.c: Likewise.
	* sunrpc/get_myaddr.c: Likewise.
	* sunrpc/key_call.c: Likewise.
	* sunrpc/netname.c: Likewise.
	* sunrpc/openchild.c: Likewise.
	* sunrpc/pmap_rmt.c: Likewise.
	* sunrpc/rpc_dtable.c: Likewise.
	* sunrpc/rtime.c: Likewise.
	* sunrpc/svc_run.c: Likewise.
	* sunrpc/svc_simple.c: Likewise.
	* sunrpc/svc_tcp.c: Likewise.
	* sunrpc/svc_udp.c: Likewise.
	* sunrpc/svcauth_des.c: Likewise.
	* sunrpc/xdr_array.c: Likewise.
	* sunrpc/xdr_rec.c: Likewise.
	* sunrpc/xdr_ref.c: Likewise.
	* sunrpc/xdr_stdio.c: Likewise.
	* sysdeps/generic/abort.c: Likewise.
	* sysdeps/generic/dl-sysdep.c: Likewise.
	* sysdeps/generic/fstatfs64.c: Likewise.
	* sysdeps/generic/ftruncate64.c: Likewise.
	* sysdeps/generic/getrlimit64.c: Likewise.
	* sysdeps/generic/glob.c: Likewise.
	* sysdeps/generic/prof-freq.c: Likewise.
	* sysdeps/generic/putenv.c: Likewise.
	* sysdeps/generic/statfs64.c: Likewise.
	* sysdeps/generic/ttyname_r.c: Likewise.
	* sysdeps/generic/utmp_file.c: Likewise.
	* sysdeps/generic/vlimit.c: Likewise.
	* sysdeps/generic/vtimes.c: Likewise.
	* sysdeps/posix/cuserid.c: Likewise.
	* sysdeps/posix/euidaccess.c: Likewise.
	* sysdeps/posix/mkstemp.c: Likewise.
	* sysdeps/posix/mktemp.c: Likewise.
	* sysdeps/posix/pread.c: Likewise.
	* sysdeps/posix/pread64.c: Likewise.
	* sysdeps/posix/profil.c: Likewise.
	* sysdeps/posix/pwrite.c: Likewise.
	* sysdeps/posix/pwrite64.c: Likewise.
	* sysdeps/posix/sigblock.c: Likewise.
	* sysdeps/posix/sigpause.c: Likewise.
	* sysdeps/posix/ttyname.c: Likewise.
	* sysdeps/posix/ttyname_r.c: Likewise.
	* sysdeps/posix/waitid.c: Likewise.
	* sysdeps/unix/getlogin_r.c: Likewise.
	* sysdeps/unix/grantpt.c: Likewise.
	* sysdeps/unix/rewinddir.c: Likewise.
	* sysdeps/unix/sysv/linux/gethostid.c: Likewise.
	* sysdeps/unix/sysv/linux/getpt.c: Likewise.
	* sysdeps/unix/sysv/linux/if_index.c: Likewise.
	* sysdeps/unix/sysv/linux/ptsname.c: Likewise.
	* sysdeps/unix/sysv/linux/sendmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/statvfs.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname_r.c: Likewise.
	* sysdeps/unix/sysv/linux/ulimit.c: Likewise.
	* sysdeps/unix/sysv/linux/unlockpt.c: Likewise.
	* sysvipc/sys/shm.h: Likewise.
	* time/ctime_r.c: Likewise.
	* time/strptime.c: Likewise.
	* wcsmbs/mbrlen.c: Likewise.
	* wcsmbs/wcsdup.c: Likewise.
	* wcsmbs/wcsxfrm.c: Likewise.
	* wctype/wcfuncs.c: Likewise.

	* sysdeps/unix/sysv/linux/i386/socker.S: Change to honor NO_WEAK_ALIAS.
	* sysdeps/unix/sysv/linux/accept.S: Don't generate __ name.
	* sysdeps/unix/sysv/linux/bind.S: Likewise.
	* sysdeps/unix/sysv/linux/getsockname.S: Likewise.
	* sysdeps/unix/sysv/linux/listen.S: Likewise.
	* sysdeps/unix/sysv/linux/recvfrom.S: Likewise.
	* sysdeps/unix/sysv/linux/sendto.S: Likewise.
	* sysdeps/unix/sysv/linux/setsockopt.S: Likewise.

	* grp/fgetgrent_r.c: Use explicit locking of the stream.

	* elf/Makefile (rtld-routines): Add dl-environ.
	* sysdeps/generic/dl-environ.c: New file.

	* libio/Makefile [REENTRANT] (routines): Add iofputs_u.
	* libio/Versions: Add fputs_unlocked.
	* libio/iofputs_u.c: New file.
	* libio/stdio.h: Add prototype for fputs_unlocked.

	* sunrpc/rpc/auth.h: Use __PMT instead of __P in type definitions.
	* sunrpc/rpc/clnt.h: Likewise.
	* sunrpc/rpc/pmap_clnt.h: Likewise.
	* sunrpc/rpc/svc.h: Likewise.
	* sunrpc/rpc/xdr.h: Likewise.

	* sysdeps/i386/memchr.S: Correct for more strict gas.
	* sysdeps/i386/fpu/bits/mathinline.h: Likewise.
	* sysdeps/libm-i387/i686/s_fdim.S: Likewise.
	* sysdeps/libm-i387/i686/s_fdimf.S: Likewise.
	* sysdeps/libm-i387/i686/s_fdiml.S: Likewise.

1998-07-15  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* configure.in: Change message for binutils version from
	2.8.1.0.17->2.8.1.0.23.

1998-07-15  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/sysv4/solaris2/sparc/sysdep.h: Define LOC.
	Patch by John Tobey <jtobey@banta-im.com>.
1998-07-16 11:44:36 +00:00

212 lines
5.6 KiB
C

/* 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
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 <alloca.h>
#include <errno.h>
#include <grp.h>
#include <limits.h>
#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;
getgrent_fct = __nss_lookup_function (nip, "getgrent_r");
if (getgrent_fct == NULL)
return NSS_STATUS_UNAVAIL;
setgrent_fct = __nss_lookup_function (nip, "setgrent");
if (setgrent_fct)
{
status = _CALL_DL_FCT (setgrent_fct, ());
if (status != NSS_STATUS_SUCCESS)
return status;
}
endgrent_fct = __nss_lookup_function (nip, "endgrent");
tmpbuf = __alloca (buflen);
do
{
while ((status = _CALL_DL_FCT (getgrent_fct,
(&grpbuf, tmpbuf, buflen, errnop)),
status == 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:
if (endgrent_fct)
_CALL_DL_FCT (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. */
int
initgroups (user, group)
const char *user;
gid_t group;
{
#if defined NGROUPS_MAX && NGROUPS_MAX == 0
/* No extra groups allowed. */
return 0;
#else
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;
#ifdef NGROUPS_MAX
# define limit NGROUPS_MAX
size = limit;
#else
long int limit = __sysconf (_SC_NGROUPS_MAX);
if (limit > 0)
size = limit;
else
/* No fixed limit on groups. Pick a starting buffer size. */
size = 16;
#endif
groups = malloc (size * sizeof (gid_t *));
groups[0] = group;
if (__nss_group_database != NULL)
{
no_more = 0;
nip = __nss_group_database;
}
else
no_more = __nss_database_lookup ("group", NULL,
"compat [NOTFOUND=return] files", &nip);
while (! no_more)
{
fct = __nss_lookup_function (nip, "initgroups");
if (fct == NULL)
{
status = compat_call (nip, user, group, &start, &size, groups,
limit, &errno);
if (nss_next_action (nip, NSS_STATUS_UNAVAIL) != NSS_ACTION_CONTINUE)
break;
}
else
status = _CALL_DL_FCT (fct, (user, group, &start, &size, groups, limit,
&errno));
/* This is really only for debugging. */
if (NSS_STATUS_TRYAGAIN > status || status > NSS_STATUS_RETURN)
__libc_fatal ("illegal status in " __FUNCTION__);
if (nss_next_action (nip, status) == NSS_ACTION_RETURN)
break;
if (nip->next == NULL)
no_more = -1;
else
nip = nip->next;
}
return setgroups (start, groups);
#endif
}