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Update. 

* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Initialize egid
	to 1.  This helps those installing ld.so SUID (nobody will be that
	stupid, I hope).  Don't define and use _dl_base_addr unless
	NEED_DL_BASE_ADDR is defined.
This commit is contained in:
Ulrich Drepper 2001-01-20 16:51:01 +00:00
parent 21a568e279
commit 1b6020c13e
2 changed files with 14 additions and 1 deletions
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5
ChangeLog
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@ -1,5 +1,10 @@
2001-01-20 Ulrich Drepper <drepper@redhat.com> 2001-01-20 Ulrich Drepper <drepper@redhat.com>
* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Initialize egid
to 1. This helps those installing ld.so SUID (nobody will be that
stupid, I hope). Don't define and use _dl_base_addr unless
NEED_DL_BASE_ADDR is defined.
* io/ftw.c (ftw_dir): Add slash after directory name if there * io/ftw.c (ftw_dir): Add slash after directory name if there
wasn't any. Reported by loris <loris@iol.it>. wasn't any. Reported by loris <loris@iol.it>.
* io/Makefile (tests): Add bug-ftw2. * io/Makefile (tests): Add bug-ftw2.

10
sysdeps/generic/dl-sysdep.c
View File

@ -51,7 +51,9 @@ extern void ENTRY_POINT (void);
/* Protect SUID program against misuse of file descriptors. */ /* Protect SUID program against misuse of file descriptors. */
extern void __libc_check_standard_fds (void); extern void __libc_check_standard_fds (void);
#ifdef NEED_DL_BASE_ADDR
ElfW(Addr) _dl_base_addr; ElfW(Addr) _dl_base_addr;
#endif
int __libc_enable_secure; int __libc_enable_secure;
int __libc_multiple_libcs = 0; /* Defining this here avoids the inclusion int __libc_multiple_libcs = 0; /* Defining this here avoids the inclusion
of init-first. */ of init-first. */
@ -87,8 +89,12 @@ _dl_sysdep_start (void **start_argptr,
uid_t uid = 0; uid_t uid = 0;
uid_t euid = 0; uid_t euid = 0;
gid_t gid = 0; gid_t gid = 0;
#ifdef HAVE_AUX_X
/* This adds a little bit of security. If the kernel does not pass
any value up we default to the safe mode. */
gid_t egid = 1;
#else
gid_t egid = 0; gid_t egid = 0;
#ifndef HAVE_AUX_X
unsigned int seen = 0; unsigned int seen = 0;
# define M(type) (1 << (type)) # define M(type) (1 << (type))
#endif #endif
@ -114,9 +120,11 @@ _dl_sysdep_start (void **start_argptr,
case AT_ENTRY: case AT_ENTRY:
user_entry = av->a_un.a_val; user_entry = av->a_un.a_val;
break; break;
#ifdef NEED_DL_BASE_ADDR
case AT_BASE: case AT_BASE:
_dl_base_addr = av->a_un.a_val; _dl_base_addr = av->a_un.a_val;
break; break;
#endif
case AT_UID: case AT_UID:
uid = av->a_un.a_val; uid = av->a_un.a_val;
break; break;