mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
6dbe283756
* nss/Makefile (databases): New variable. (routines, libnss_files-routines): Use it. (subdir-dirs): Compute from $(services). * sysdeps/unix/sysv/linux/syscalls.list (create_module, delete_module, init_module, klogctl): Use EXTRA in the "caller" column so these get added to unix-extra-syscalls and thus compiled in misc. * string/Makefile (routines): Add strndup. * string/strndup.c: New file. * string/string.h: Declare strndup. (strndupa): New macro. * string/string.h: Declare __strdup. * string/strdup.c: Deansideclized. Define __ name and weak alias. * string/string.h: Don't define memccpy as macro for [__OPTIMIZE__]. Thu Jun 27 23:43:22 1996 Richard Henderson <rth@tamu.edu> * sysdeps/alpha/dl-machine.h (elf_machine_rela): The Alpha's address-of operation and plt format conspire to require all dynamic relocs to be resolved to actual symbols not plt entries. Thu Jun 27 02:49:28 1996 Ulrich Drepper <drepper@cygnus.com> * catgets/gencat.c: Add casts to avoid signed<->unsigned warnings. * grp/initgroups.c (initgroups): De-ansi-fy. Move declaration of NGROUPS and GROUPS outside #if so that the code compiles for NGROUPS_MAX != 0. * inet/Makefile (headers): Add netinet/ether.h and netinet/if_ether.h. (routines): Add ether_aton, ether_aton_r, ether_hton, ether_line, ether_ntoa, ether_ntoa_r, and ether_ntoh. * inet/ether_aton.c, inet/ether_aton_r.c, inet/ether_hton.c, inet/ether_line.c, inet/ether_ntoa.c, inet/ether_ntoa_r.c, inet/ether_ntoh.c: New files. Implementation of functions to handle Ethernet address to host mapping. * inet/netinet/ether.h: New file. Declare ether_* functions. * netinet/ether.h: Wrapper around inet/netinet/ether.h for glibc compilation. * nss/ethers-lookup.c: New file. Lookup function for ethers database. * nss/Makefile (routines): Add ethers-lookup. (libnss_files-routines): Add files-ethers. * nss/getXXent_r.c: Don't define set*ent and end*ent function with _r suffix. * nss/nss_files/files-XXX.c (internal_endent): Don't reset KEEP_STREAM every time called. (_nss_files_end): Reset KEEP_STREAM here instead. (internal_getent): If STREAM == NULL try to open instead of signalling error. Use cast to prevent warning. Terminate read line in case the buffer is too small. * nss/nss_files/files-ethers.c: New file. Implementation of Ethernet adress<->hostname lookup through files interface. * stdlib/mbstowcs.c: Define based on mbsrtowcs(). * stdlib/mbtowc.c: Define based on mbrtowc(). * stdlib/wcstombs.c: Define based on wcsrtombs(). * stdlib/wctomb.c: Define based on wcrtomb(). * sunrpc/xdr.c (xdr_u_int): Avoid bogus call to unexpected_sizes_in_xdr_u_int. * sysdeps/generic/netinet/if_ether.h: New file. Generic declaration of `struct ether_addr'. * sysdeps/unix/sysv/linux/netinet/if_ether.h: New file. Linux specific declaration of `struct ether_addr'. * wcsmbs/mbrtowc.c: Handle case where argument PS is NULL. * wcsmbs/mbsrtowcs.c: Ditto. * wcsmbs/wcrtomb.c: Ditto. * wcsmbs/wcsrtombs.c: Ditto. * wcsmbs/mbsinit.c: Prepare for PS being NULL.
100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
/* Copyright (C) 1989, 1991, 1993, 1996 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., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <alloca.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <grp.h>
|
|
#include <limits.h>
|
|
#include <sys/types.h>
|
|
|
|
|
|
/* 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
|
|
|
|
struct group *g;
|
|
register size_t n;
|
|
size_t ngroups;
|
|
gid_t *groups;
|
|
#ifdef NGROUPS_MAX
|
|
# define limit NGROUPS_MAX
|
|
|
|
ngroups = limit;
|
|
#else
|
|
long int limit = sysconf (_SC_NGROUPS_MAX);
|
|
|
|
if (limit > 0)
|
|
ngroups = limit;
|
|
else
|
|
/* No fixed limit on groups. Pick a starting buffer size. */
|
|
ngroups = 16;
|
|
#endif
|
|
|
|
groups = __alloca (ngroups * sizeof *groups);
|
|
|
|
setgrent ();
|
|
|
|
n = 0;
|
|
groups[n++] = group;
|
|
|
|
while ((g = getgrent ()) != NULL)
|
|
if (g->gr_gid != group)
|
|
{
|
|
register char **m;
|
|
|
|
for (m = g->gr_mem; *m != NULL; ++m)
|
|
if (!strcmp (*m, user))
|
|
break;
|
|
|
|
if (*m == NULL)
|
|
{
|
|
/* Matched the user. Insert this group. */
|
|
if (n == ngroups && limit <= 0)
|
|
{
|
|
/* Need a bigger buffer. */
|
|
groups = memcpy (__alloca (ngroups * 2 * sizeof *groups),
|
|
groups, ngroups * sizeof *groups);
|
|
ngroups *= 2;
|
|
}
|
|
|
|
groups[n++] = g->gr_gid;
|
|
|
|
if (n == limit)
|
|
/* Can't take any more groups; stop searching. */
|
|
break;
|
|
}
|
|
}
|
|
|
|
endgrent ();
|
|
|
|
return setgroups (n, groups);
|
|
#endif
|
|
}
|