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patches/glibc/2.5/190-alpha-sigsuspend.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Mon Feb 21 23:39:46 2011 +0100 (2011-02-21)
changeset 2312 8b9938edd3d8
parent 744 4bf8448536d5
permissions -rw-r--r--
libc/glibc: add fortify option

By default, recent versions of glibc and eglibc will build some
functions that take format strings (eg. printf, syslog...) with
run-time checks against some format string attacks. This is
called a fortified build.

Unfortunately, this fails somehow while building the instrumented
version of syslog, with some kind of circular dependency...

Disable fortified builds by default, and hide the enabling option
behind EXPERIMENTAL for daring users...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 --- glibc-2.5/sysdeps/unix/sysv/linux/alpha/sigsuspend.S.orig	2006-10-22 22:17:01.000000000 +0200

     2 +++ glibc-2.5/sysdeps/unix/sysv/linux/alpha/sigsuspend.S	2006-10-22 22:18:05.000000000 +0200

     3 @@ -31,3 +31,21 @@

     4  libc_hidden_def (__sigsuspend)

     5  weak_alias (__sigsuspend, sigsuspend)

     6  strong_alias (__sigsuspend, __libc_sigsuspend)

     7 +

     8 +#ifndef NO_CANCELLATION

     9 +	.globl __sigsuspend_nocancel;

    10 +	.align 4;

    11 +	.type __sigsuspend_nocancel, @function;

    12 +	.usepv __sigsuspend_nocancel, std;

    13 +	cfi_startproc;

    14 +__LABEL(__sigsuspend_nocancel)

    15 +	ldgp    gp, 0(pv);

    16 +	PSEUDO_PROF;

    17 +	PSEUDO_PREPARE_ARGS

    18 +	lda     v0, SYS_ify(sigsuspend);

    19 +	call_pal PAL_callsys;

    20 +	bne     a3, SYSCALL_ERROR_LABEL;

    21 +	ret;

    22 +	cfi_endproc;

    23 +	.size __sigsuspend_nocancel, .-__sigsuspend_nocancel

    24 +#endif
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