From 3d1870fa3301c5cd00d5fdab0014c4e22b71fef2 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Tue, 3 Oct 2017 01:26:58 +0200 Subject: Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN On the Hurd, the rtld needs to see its own dumb versions of a few functions (defined in sysdeps/mach/hurd/dl-sysdep.c) overridden by libc's versions once loaded. rtld should thus not have hidden attribute for these. To achieve this, the Hurd port used to just define NO_HIDDEN, which disables it completely. For now, this changes that to disabling it for all rtld functions, for simplicity. See Roland's comment on https://sourceware.org/bugzilla/show_bug.cgi?id=15605#c5 The ld.so numbers remain at 8 .rel.plt 000000c8 00000c24 00000c24 00000c24 2**2 CONTENTS, ALLOC, LOAD, READONLY, DATA 9 .plt 000001a0 00000cf0 00000cf0 00000cf0 2**4 CONTENTS, ALLOC, LOAD, READONLY, CODE 10 .plt.got 00000010 00000e90 00000e90 00000e90 2**3 CONTENTS, ALLOC, LOAD, READONLY, CODE 18 .got.plt 00000070 0002d000 0002d000 0002c000 2**2 CONTENTS, ALLOC, LOAD, DATA which is about 3 times as much as on Linux. The libc.so numbers get divided by 3 (the remainings are mostly RPC stub calls) * include/libc-symbols.h [NO_RTLD_HIDDEN] (rtld_hidden_proto, rtld_hidden_tls_proto, rtld_hidden_def, rtld_hidden_weak, rtld_hidden_rtld_hidden_ver, data_def, rtld_hidden_data_weak, rtld_hidden_data_ver): Define to empty. * include/assert.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__assert_fail, __assert_perror_fail): Likewise. * include/dirent.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__rewinddir): Likewise. * include/libc-internal.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__profile_frequency): Likewise. * include/setjmp.h (__sigsetjmp): Likewise. * include/signal.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__sigaction, __libc_sigaction): Likewise. * include/stdlib.h [NO_RTLD_HIDDEN] (unsetenv, __strtoul_internal): Do not set hidden attribute. * include/string.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__stpcpy, __strdup, __strerror_t, __strsep_g, memchr, memcmp, memcpy, memmove, memset, rawmemchr, stpcpy, strchr, strcmp, strlen, strnlen, strsep): Likewise. * include/sys/stat.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__fxstat, __fxstat64, __lxstat, __lxstat64, __xstat, __xstat64, __fxstatat64): Likewise. * include/sys/utsname.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__uname): Likewise. * include/sysdeps/generic/_itoa.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (_itoa_upper_digits, _itoa_lower_digits): Likewise. * sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Do not set. (NO_RTLD_HIDDEN): Set. * sysdeps/mach/hurd/configure: Refresh. * config.h.in: Refresh. --- include/assert.h | 2 +- include/dirent.h | 2 +- include/libc-internal.h | 2 +- include/libc-symbols.h | 2 +- include/setjmp.h | 2 +- include/signal.h | 2 +- include/stdlib.h | 2 +- include/string.h | 2 +- include/sys/stat.h | 4 ++-- include/sys/utsname.h | 2 +- 10 files changed, 11 insertions(+), 11 deletions(-) (limited to 'include') diff --git a/include/assert.h b/include/assert.h index c0f7e1a91c..61cc8aa22f 100644 --- a/include/assert.h +++ b/include/assert.h @@ -20,7 +20,7 @@ extern void __assert_fail_base (const char *fmt, const char *assertion, const char *function) __THROW __attribute__ ((__noreturn__)) attribute_hidden; -# if IS_IN (libc) || IS_IN (rtld) +# if IS_IN (libc) || (IS_IN (rtld) && !defined NO_RTLD_HIDDEN) hidden_proto (__assert_fail) hidden_proto (__assert_perror_fail) # endif diff --git a/include/dirent.h b/include/dirent.h index 6fcc2f391b..caaeb0be85 100644 --- a/include/dirent.h +++ b/include/dirent.h @@ -77,7 +77,7 @@ extern __typeof (scandirat) __scandirat; libc_hidden_proto (__scandirat) libc_hidden_proto (scandirat64) -# if IS_IN (rtld) +# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN extern __typeof (__rewinddir) __rewinddir attribute_hidden; # endif # endif diff --git a/include/libc-internal.h b/include/libc-internal.h index 7403c24e25..69cd781aee 100644 --- a/include/libc-internal.h +++ b/include/libc-internal.h @@ -49,7 +49,7 @@ extern void __libc_thread_freeres (void); /* Define and initialize `__progname' et. al. */ extern void __init_misc (int, char **, char **) attribute_hidden; -# if IS_IN (rtld) +# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN extern __typeof (__profile_frequency) __profile_frequency attribute_hidden; # endif diff --git a/include/libc-symbols.h b/include/libc-symbols.h index 10fd2063b0..e0d4dc3170 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -558,7 +558,7 @@ for linking") # define libc_hidden_data_ver(local, name) #endif -#if IS_IN (rtld) +#if IS_IN (rtld) && !defined NO_RTLD_HIDDEN # define rtld_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) # define rtld_hidden_tls_proto(name, attrs...) hidden_tls_proto (name, ##attrs) # define rtld_hidden_def(name) hidden_def (name) diff --git a/include/setjmp.h b/include/setjmp.h index e45328b18a..c234287515 100644 --- a/include/setjmp.h +++ b/include/setjmp.h @@ -28,7 +28,7 @@ libc_hidden_proto (__libc_longjmp) libc_hidden_proto (_setjmp) libc_hidden_proto (__sigsetjmp) -# if IS_IN (rtld) +# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN extern __typeof (__sigsetjmp) __sigsetjmp attribute_hidden; # endif #endif diff --git a/include/signal.h b/include/signal.h index 7cbe64b8ad..293258ad65 100644 --- a/include/signal.h +++ b/include/signal.h @@ -54,7 +54,7 @@ extern int __xpg_sigpause (int sig); /* Allocate real-time signal with highest/lowest available priority. */ extern int __libc_allocate_rtsig (int __high); -# if IS_IN (rtld) +# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN extern __typeof (__sigaction) __sigaction attribute_hidden; extern __typeof (__libc_sigaction) __libc_sigaction attribute_hidden; # endif diff --git a/include/stdlib.h b/include/stdlib.h index c0fcb95777..5974fb3d24 100644 --- a/include/stdlib.h +++ b/include/stdlib.h @@ -294,7 +294,7 @@ struct abort_msg_s extern struct abort_msg_s *__abort_msg; libc_hidden_proto (__abort_msg) -# if IS_IN (rtld) +# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN extern __typeof (unsetenv) unsetenv attribute_hidden; extern __typeof (__strtoul_internal) __strtoul_internal attribute_hidden; # endif diff --git a/include/string.h b/include/string.h index 968d6fea05..bb4922cbbe 100644 --- a/include/string.h +++ b/include/string.h @@ -143,7 +143,7 @@ libc_hidden_builtin_proto (strspn) libc_hidden_builtin_proto (strstr) libc_hidden_builtin_proto (ffs) -#if IS_IN (rtld) +#if IS_IN (rtld) && !defined NO_RTLD_HIDDEN extern __typeof (__stpcpy) __stpcpy attribute_hidden; extern __typeof (__strdup) __strdup attribute_hidden; extern __typeof (__strerror_r) __strerror_r attribute_hidden; diff --git a/include/sys/stat.h b/include/sys/stat.h index eb44754185..b82d452780 100644 --- a/include/sys/stat.h +++ b/include/sys/stat.h @@ -14,7 +14,7 @@ extern int __mkdir (const char *__path, __mode_t __mode); libc_hidden_proto (__mkdir) extern int __mknod (const char *__path, __mode_t __mode, __dev_t __dev); -#if IS_IN (libc) || IS_IN (rtld) +#if IS_IN (libc) || (IS_IN (rtld) && !defined NO_RTLD_HIDDEN) hidden_proto (__fxstat) hidden_proto (__fxstat64) hidden_proto (__lxstat) @@ -37,7 +37,7 @@ libc_hidden_proto (__xmknodat) libc_hidden_proto (__fxstatat) libc_hidden_proto (__fxstatat64) -# if IS_IN (rtld) +# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN extern __typeof (__fxstatat64) __fxstatat64 attribute_hidden; # endif diff --git a/include/sys/utsname.h b/include/sys/utsname.h index 14f4247dd4..9ed5fa2565 100644 --- a/include/sys/utsname.h +++ b/include/sys/utsname.h @@ -7,7 +7,7 @@ extern int __uname (struct utsname *__name); libc_hidden_proto (uname) libc_hidden_proto (__uname) -# if IS_IN (rtld) +# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN extern __typeof (__uname) __uname attribute_hidden; # endif #endif -- cgit 1.4.1