From 900e445fad9bf301a42c0d0008cce504ad94050e Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Fri, 23 May 2014 16:03:28 -0700 Subject: [PATCH] Only provide non-default symbols in libpthread for vfork * nptl/pt-vfork.c (vfork_resolve): Rename from vfork_ifunc. (vfork, __vfork): Define via compat_symbol. --- ChangeLog | 3 +++ nptl/pt-vfork.c | 16 +++++++++------- 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/ChangeLog b/ChangeLog index 11b3521dd4..271e31d45d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2014-05-23 Richard Henderson + * nptl/pt-vfork.c (vfork_resolve): Rename from vfork_ifunc. + (vfork, __vfork): Define via compat_symbol. + * nptl/pt-vfork.c: Error if !HAVE_IFUNC. [!HAVE_IFUNC] (vfork_compat): Remove. [!HAVE_IFUNC] (DEFINE_VFORK): Remove. diff --git a/nptl/pt-vfork.c b/nptl/pt-vfork.c index eaffe48f53..f3858c2648 100644 --- a/nptl/pt-vfork.c +++ b/nptl/pt-vfork.c @@ -46,30 +46,32 @@ extern __typeof (vfork) __libc_vfork; /* Defined in libc. */ -attribute_hidden __attribute__ ((used)) -__typeof (vfork) * -vfork_ifunc (void) +static __typeof (vfork) * +__attribute__ ((used)) +vfork_resolve (void) { return &__libc_vfork; } # ifdef HAVE_ASM_SET_DIRECTIVE # define DEFINE_VFORK(name) \ - asm (".set " #name ", vfork_ifunc\n" \ + asm (".set " #name ", vfork_resolve\n" \ ".globl " #name "\n" \ ".type " #name ", %gnu_indirect_function"); # else # define DEFINE_VFORK(name) \ - asm (#name " = vfork_ifunc\n" \ + asm (#name " = vfork_resolve\n" \ ".globl " #name "\n" \ ".type " #name ", %gnu_indirect_function"); # endif #endif #if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20) -DEFINE_VFORK (vfork) +DEFINE_VFORK (vfork_ifunc) +compat_symbol (libpthread, vfork_ifunc, vfork, GLIBC_2_0); #endif #if SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20) -DEFINE_VFORK (__vfork) +DEFINE_VFORK (__vfork_ifunc) +compat_symbol (libpthread, __vfork_ifunc, __vfork, GLIBC_2_1_2); #endif -- 2.43.5