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hurd: Fix some ld.so symbol override from libc

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ld.so symbols to be overriden by libc need to be extern to really get
overriden.

More fixes are needed to avoid the hidden attribute.

	* sysdeps/mach/hurd/Versions (libc): Make __access and
	__access_noerrno external so they can override the ld symbols.
	(ld): Make __access, __read, __sbrk, __strtoul_internal, __write,
	__writev, __open64, __access_noerrno extern so they can be overrided.
	* sysdeps/mach/hurd/i386/libc.abilist: Update accordingly.
	* sysdeps/mach/hurd/i386/ld.abilist: Update accordingly.
This commit is contained in:
Samuel Thibault 2018-07-27 11:18:29 +02:00
parent cb1a43db05
commit 20365a315b
6 changed files with 34 additions and 8 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2018-07-27 Samuel Thibault <samuel.thibault@ens-lyon.org>
* sysdeps/mach/hurd/Versions (libc): Make __access and
__access_noerrno external so they can override the ld symbols.
(ld): Make __access, __read, __sbrk, __strtoul_internal, __write,
__writev, __open64, __access_noerrno extern so they can be overrided.
* sysdeps/mach/hurd/i386/libc.abilist: Update accordingly.
* sysdeps/mach/hurd/i386/ld.abilist: Update accordingly.
2018-07-26 Carlos O'Donell <carlos@redhat.com>
* po/libc.pot: Regenerate.

19
sysdeps/mach/hurd/Versions
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@ -1,11 +1,15 @@
libc {
GLIBC_2.0 {
# functions with a weak definition in the dynamic linker
__getcwd; __mmap;
__access; __getcwd; __mmap;
}
GLIBC_2.2.6 {
# functions with a weak definition in the dynamic linker
__writev;
}
GLIBC_PRIVATE {
# Functions shared with the dynamic linker
__libc_read; __libc_write; __libc_lseek64;
__access_noerrno; __libc_read; __libc_write; __libc_lseek64;
__libc_lock_self0;
_dl_init_first;
@ -18,11 +22,16 @@ ld {
__hurd_threadvar_stack_mask; __hurd_threadvar_stack_offset;
# functions that must be shared with libc
__close; __getcwd; __getpid;
__mmap; __open; __xstat64; __fxstat64;
__access; __close; __getcwd; __getpid;
__mmap; __open; __read; __sbrk; __strtoul_internal;
__write; __writev; __xstat64; __fxstat64;
_exit; _hurd_intr_rpc_mach_msg;
abort;
}
GLIBC_2.2 {
# functions that must be shared with libc
__open64;
}
GLIBC_2.2.6 {
# this also must be shared with libc.
__errno_location;
@ -31,7 +40,7 @@ ld {
_dl_init_first;
# functions that must be shared with libc
__libc_read; __libc_write; __libc_lseek64;
__access_noerrno; __libc_read; __libc_write; __libc_lseek64;
__libc_lock_self0;
}
}

5
sysdeps/mach/hurd/dl-sysdep.c
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@ -275,7 +275,10 @@ _dl_sysdep_start_cleanup (void)
/* Minimal open/close/mmap implementation sufficient for initial loading of
shared libraries. These are weak definitions so that when the
dynamic linker re-relocates itself to be user-visible (for -ldl),
it will get the user's definition (i.e. usually libc's). */
it will get the user's definition (i.e. usually libc's).
They also need to be set in the ld section of sysdeps/mach/hurd/Versions, to
be overridable, and in libc.abilist and ld.abilist to be checked. */
/* This macro checks that the function does not get renamed to be hidden: we do
need these to be overridable by libc's. */

4
sysdeps/mach/hurd/i386/ld.abilist
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@ -5,6 +5,10 @@ GLIBC_2.2.6 __getpid F
GLIBC_2.2.6 __libc_stack_end D 0x4
GLIBC_2.2.6 __mmap F
GLIBC_2.2.6 __open F
GLIBC_2.2.6 __open64 F
GLIBC_2.2.6 __strtoul_internal F
GLIBC_2.2.6 __write F
GLIBC_2.2.6 __writev F
GLIBC_2.2.6 __xstat64 F
GLIBC_2.2.6 _dl_mcount F
GLIBC_2.2.6 _hurd_intr_rpc_mach_msg F

1
sysdeps/mach/hurd/i386/libc.abilist
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@ -543,6 +543,7 @@ GLIBC_2.2.6 __wctrans_l F
GLIBC_2.2.6 __wctype_l F
GLIBC_2.2.6 __woverflow F
GLIBC_2.2.6 __write F
GLIBC_2.2.6 __writev F
GLIBC_2.2.6 __wuflow F
GLIBC_2.2.6 __wunderflow F
GLIBC_2.2.6 __xmknod F

4
sysdeps/mach/hurd/i386/localplt.data
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@ -27,7 +27,7 @@ ld.so: __open64 ?
ld.so: __close
ld.so: __read ?
ld.so: __write ?
#ld.so: __writev
ld.so: __writev
ld.so: __libc_lseek64
ld.so: __mmap
ld.so: __fxstat64
@ -37,7 +37,7 @@ ld.so: __xstat64
ld.so: __getpid
#ld.so: __getcwd
#ld.so: __sbrk
#ld.so: __strtoul_internal
ld.so: __strtoul_internal
#ld.so: _exit
ld.so: abort
ld.so: _hurd_intr_rpc_mach_msg