2003-05-05 Ulrich Drepper <drepper@redhat.com>
+ * sysdeps/generic/enbl-secure.c (__libc_enable_secure_decided): New
+ variable.
+ (__libc_init_secure): Don't do anything if __libc_enable_secure_decided
+ is nonzero.
+ * include/unistd.h: Declare __libc_enable_secure_decided.
+ * elf/dl-support.c (_dl_aux_init): Recognize AT_UID, AT_EUID, AT_GID,
+ and AT_EGID. If all found, set __libc_enable_secure and
+ __libc_enable_secure_decided.
+
* sysdeps/generic/libc-start.c [!SHARED]: Call
__libc_check_standard_fds after __libc_init_first.
internal_function
_dl_aux_init (ElfW(auxv_t) *av)
{
+ int seen = 0;
+ uid_t uid = 0;
+ gid_t gid = 0;
+
for (; av->a_type != AT_NULL; ++av)
switch (av->a_type)
{
GL(dl_sysinfo) = av->a_un.a_val;
break;
#endif
+ case AT_UID:
+ uid ^= av->a_un.a_val;
+ seen |= 1;
+ break;
+ case AT_EUID:
+ uid ^= av->a_un.a_val;
+ seen |= 2;
+ break;
+ case AT_GID:
+ gid ^= av->a_un.a_val;
+ seen |= 4;
+ break;
+ case AT_EGID:
+ gid ^= av->a_un.a_val;
+ seen |= 8;
+ break;
}
+ if (seen == 0xf)
+ {
+ __libc_enable_secure = uid != 0 || gid != 0;
+ __libc_enable_secure_decided = 1;
+ }
}
#endif
and some functions contained in the C library ignore various
environment variables that normally affect them. */
extern int __libc_enable_secure;
+extern int __libc_enable_secure_decided;
#ifdef IS_IN_rtld
/* XXX The #ifdef should go. */
extern int __libc_enable_secure_internal attribute_hidden;
+2003-05-05 Ulrich Drepper <drepper@redhat.com>
+
+ * sysdeps/i386/tls.h (TLS_DO_SET_THREAD_AREA): Add \n to error
+ messages.
+
2003-05-04 Roland McGrath <roland@redhat.com>
* Makefile ($(objpfx)../libc.so): New target.
+2003-05-05 Ulrich Drepper <drepper@redhat.com>
+
+ * sysdeps/i386/tls.h (TLS_INIT_TP): Include \n in error message.
+
2003-05-04 Roland McGrath <roland@redhat.com>
* Makefile ($(objpfx)../libc.so): New target.
/* Define and initialize the `__libc_enable_secure' flag. Generic version.
- Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 2000, 2003 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
#include <unistd.h>
#include <libc-internal.h>
+/* If nonzero __libc_enable_secure is already set. */
+int __libc_enable_secure_decided;
/* Safest assumption, if somehow the initializer isn't run. */
int __libc_enable_secure = 1;
void
__libc_init_secure (void)
{
- __libc_enable_secure = (__geteuid () != __getuid ()
- || __getegid () != __getgid ());
+ if (__libc_enable_secure_decided == 0)
+ __libc_enable_secure = (__geteuid () != __getuid ()
+ || __getegid () != __getgid ());
}