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Ban getgrouplist on linux glibc systems with glibc <= 2.3.

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This segfaults when you have to many group membership entries
in /etc/group.

Fixed in glibc CVS end of April 2003.

Volker
This commit is contained in:
Volker Lendecke 0001-01-01 00:00:00 +00:00
parent f93a2831f1
commit 61bfdf0b12
1 changed files with 33 additions and 1 deletions
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34
source/configure.in
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@ -843,7 +843,7 @@ AC_CHECK_FUNCS(setpriv setgidx setuidx setgroups sysconf mktime rename ftruncate
AC_CHECK_FUNCS(lstat64 fopen64 atexit grantpt dup2 lseek64 ftruncate64 readdir64)
AC_CHECK_FUNCS(fseek64 fseeko64 ftell64 ftello64 setluid getpwanam setlinebuf)
AC_CHECK_FUNCS(srandom random srand rand setenv usleep strcasecmp fcvt fcvtl symlink readlink)
AC_CHECK_FUNCS(syslog vsyslog getgrouplist timegm)
AC_CHECK_FUNCS(syslog vsyslog timegm)
AC_CHECK_FUNCS(setlocale nl_langinfo)
# setbuffer, shmget, shm_open are needed for smbtorture
AC_CHECK_FUNCS(setbuffer shmget shm_open backtrace_symbols)
@ -866,6 +866,38 @@ AC_CHECK_FUNCS(pread _pread __pread pread64 _pread64 __pread64)
AC_CHECK_FUNCS(pwrite _pwrite __pwrite pwrite64 _pwrite64 __pwrite64)
AC_CHECK_FUNCS(open64 _open64 __open64 creat64)
#
#
#
case "$host_os" in
*linux*)
# glibc <= 2.3.2 has a broken getgrouplist
AC_TRY_RUN([
#include <unistd.h>
#include <sys/utsname.h>
main() {
/* glibc up to 2.3 has a broken getgrouplist */
#if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
int libc_major = __GLIBC__;
int libc_minor = __GLIBC_MINOR__;
if (libc_major < 2)
exit(1);
if ((libc_major == 2) && (libc_minor <= 3))
exit(1);
#endif
exit(0);
}
], [linux_getgrouplist_ok=yes], [linux_getgrouplist_ok=no])
if test x"$linux_getgrouplist_ok" = x"yes"; then
AC_DEFINE(HAVE_GETGROUPLIST, 1, [Have good getgrouplist])
fi
;;
*)
AC_CHECK_FUNCS(getgrouplist)
;;
esac
#
# stat64 family may need <sys/stat.h> on some systems, notably ReliantUNIX
#