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| author | Florian Weimer <fweimer@redhat.com> | 2019-07-02 15:12:20 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2019-07-02 16:51:13 +0200 |
| commit | 41d6f74e6cb6a92ab428c11ee1e408b2a16aa1b0 (patch) | |
| tree | ece03ae53e8fd589f2c493cb753c132545a49196 /ChangeLog | |
| parent | 27cec9aed97447dff887a88f4241604fffd8c525 (diff) | |
| download | glibc-41d6f74e6cb6a92ab428c11ee1e408b2a16aa1b0.zip glibc-41d6f74e6cb6a92ab428c11ee1e408b2a16aa1b0.tar.gz glibc-41d6f74e6cb6a92ab428c11ee1e408b2a16aa1b0.tar.bz2 | |
nptl: Remove vfork IFUNC-based forwarder from libpthread [BZ #20188]
With commit f0b2132b35248c1f4a80f62a2c38cddcc802aa8c ("ld.so:
Support moving versioned symbols between sonames [BZ #24741]"), the
dynamic linker will find the definition of vfork in libc and binds
a vfork reference to that symbol, even if the soname in the version
reference says that the symbol should be located in libpthread.
As a result, the forwarder (whether it's IFUNC-based or a duplicate
of the libc implementation) is no longer necessary.
On older architectures, a placeholder symbol is required, to make sure
that the GLIBC_2.1.2 symbol version does not go away, or is turned in
to a weak symbol definition by the link editor. (The symbol version
needs to preserved so that the symbol coverage check in
elf/dl-version.c does not fail for old binaries.)
mips32 is an outlier: It defined __vfork@@GLIBC_2.2, but the
baseline is GLIBC_2.0. Since there are other @@GLIBC_2.2 symbols,
the placeholder symbol is not needed there.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 81 |
1 files changed, 81 insertions, 0 deletions
@@ -1,3 +1,84 @@ +2019-07-01 Florian Weimer <fweimer@redhat.com> + + [BZ #20188] + * nptl/Versions (libpthread): Remove __fork from GLIBC_2.0. + Replace __vfork with __libpthread_version_placeholder for + GLIBC_2.1.2. + (libc): Remove __libc_vfork from GLIBC_PRIVATE. + * nptl/Makefile (libpthread-routines): Remove pt-vfork. Add + libpthread-compat. + * nptl/pt-vfork.c: Remove file. + * sysdeps/unix/sysv/linux/aarch64/pt-vfork.c: Likewise. + * sysdeps/unix/sysv/linux/alpha/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/csky/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/hppa/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/ia64/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/m68k/pt-vfork.c: Likewise. + * sysdeps/unix/sysv/linux/microblaze/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/mips/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/nios2/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/riscv/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/s390/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/sh/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/sparc/pt-vfork.S: Likewise. + * sysdeps/unix/sysv/linux/aarch64/libpthread.abilist (GLIBC_2.17): + Remove vfork, __vfork. + * sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.0): + Remove vfork. + (GLIBC_2.1.2): Replace __vfork with + __libpthread_version_placeholder. + * sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.4): + Remove vfork, __vfork. + * sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.2): + Likewise. + * sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.0): + Remove vfork. + (GLIBC_2.1.2): Replace __vfork with + __libpthread_version_placeholder. + * sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.2): + Remove vfork. + * sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist + (GLIBC_2.4): Remove vfork, __vfork. + * sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist + (GLIBC_2.0): Remove vfork. + (GLIBC_2.1.2): Replace __vfork with + __libpthread_version_placeholder. + * sysdeps/unix/sysv/linux/microblaze/libpthread.abilist + (GLIBC_2.18): Remove vfork, __vfork. + * sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist + (GLIBC_2.0): Remove vfork. + (GLIBC_2.2): Remove __vfork. + * sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist: + (GLIBC_2.2): Remove vfork, __vfork. + * sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist: + (GLIBC_2.0): Remove vfork. + (GLIBC_2.1.2): Replace __vfork with + __libpthread_version_placeholder. + * sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist + (GLIBC_2.3): Remove vfork, __vfork. + * sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist + (GLIBC_2.17): Likewise. + * sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist + (GLIBC_2.0): Remove vfork. + (GLIBC_2.1.2): Replace __vfork with + __libpthread_version_placeholder. + * sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist + (GLIBC_2.2): Remove vfork, __vfork. + * sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.2): + Likewise. + * sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist + (GLIBC_2.0): Remove vfork. + (GLIBC_2.1.2): Replace __vfork with + __libpthread_version_placeholder. + * sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist + (GLIBC_2.2): Remove vfork, __vfork. + * sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist + (GLIBC_2.2.5): Likewise. + * sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist + (GLIBC_2.16): Likewise. + * sysdeps/unix/sysv/linux/hppa/localplt.data (libpthread.so): + Remove __errno_location. + 2019-07-02 Florian Weimer <fweimer@redhat.com> [BZ #24757] |