From 9e5ee8b839175b7f48d2e64e87d1e3da8fa6458f Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Sun, 1 Oct 2017 15:58:52 -0700 Subject: Hide internal __ioctl function [BZ #18822] Hide internal __ioctl function to allow direct access within libc.so and libc.a without using GOT nor PLT. __GI___ioctl is defined when sysdeps/unix/syscalls.list is used to generate ioctl. Otherwise libc_hidden_def is needed explicitly. [BZ #18822] * include/sys/ioctl.h (__ioctl): Add libc_hidden_proto. * misc/ioctl.c (__ioctl): Add libc_hidden_def. * sysdeps/mach/hurd/ioctl.c (__ioctl): Likewise. * sysdeps/unix/sysv/linux/aarch64/ioctl.S (__ioctl): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl): Likewise. * sysdeps/unix/sysv/linux/powerpc/ioctl.c (__ioctl): Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/ioctl.S (__ioctl): Likewise. --- ChangeLog | 12 ++++++++++++ include/sys/ioctl.h | 1 + misc/ioctl.c | 1 + sysdeps/mach/hurd/ioctl.c | 1 + sysdeps/unix/sysv/linux/aarch64/ioctl.S | 1 + sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S | 1 + sysdeps/unix/sysv/linux/powerpc/ioctl.c | 1 + sysdeps/unix/sysv/linux/tile/tilegx/ioctl.S | 1 + 8 files changed, 19 insertions(+) diff --git a/ChangeLog b/ChangeLog index 970bc5fdc7..c302e2617c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,15 @@ +2017-10-01 H.J. Lu + + [BZ #18822] + * include/sys/ioctl.h (__ioctl): Add libc_hidden_proto. + * misc/ioctl.c (__ioctl): Add libc_hidden_def. + * sysdeps/mach/hurd/ioctl.c (__ioctl): Likewise. + * sysdeps/unix/sysv/linux/aarch64/ioctl.S (__ioctl): Likewise. + * sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl): + Likewise. + * sysdeps/unix/sysv/linux/powerpc/ioctl.c (__ioctl): Likewise. + * sysdeps/unix/sysv/linux/tile/tilegx/ioctl.S (__ioctl): Likewise. + 2017-10-01 H.J. Lu [BZ #18822] diff --git a/include/sys/ioctl.h b/include/sys/ioctl.h index bfc6909dbc..dd7c3c7c9c 100644 --- a/include/sys/ioctl.h +++ b/include/sys/ioctl.h @@ -5,6 +5,7 @@ /* Now define the internal interfaces. */ extern int __ioctl (int __fd, unsigned long int __request, ...); +libc_hidden_proto (__ioctl) # endif /* !_ISOMAC */ #endif diff --git a/misc/ioctl.c b/misc/ioctl.c index 9b90102544..7e1c8cc4d7 100644 --- a/misc/ioctl.c +++ b/misc/ioctl.c @@ -28,4 +28,5 @@ __ioctl (int fd, unsigned long int request, ...) } stub_warning (ioctl) +libc_hidden_def (__ioctl) weak_alias (__ioctl, ioctl) diff --git a/sysdeps/mach/hurd/ioctl.c b/sysdeps/mach/hurd/ioctl.c index 7ce521c4fa..d6b4583a6f 100644 --- a/sysdeps/mach/hurd/ioctl.c +++ b/sysdeps/mach/hurd/ioctl.c @@ -323,4 +323,5 @@ __ioctl (int fd, unsigned long int request, ...) } } +libc_hidden_def (__ioctl) weak_alias (__ioctl, ioctl) diff --git a/sysdeps/unix/sysv/linux/aarch64/ioctl.S b/sysdeps/unix/sysv/linux/aarch64/ioctl.S index 866d6ef12d..61b3804e1b 100644 --- a/sysdeps/unix/sysv/linux/aarch64/ioctl.S +++ b/sysdeps/unix/sysv/linux/aarch64/ioctl.S @@ -28,4 +28,5 @@ ENTRY(__ioctl) ret PSEUDO_END (__ioctl) +libc_hidden_def (__ioctl) weak_alias (__ioctl, ioctl) diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S b/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S index ee5d11d240..54d186666d 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S @@ -38,4 +38,5 @@ L(error): PSEUDO_END (__ioctl) +libc_hidden_def (__ioctl) weak_alias (__ioctl, ioctl) diff --git a/sysdeps/unix/sysv/linux/powerpc/ioctl.c b/sysdeps/unix/sysv/linux/powerpc/ioctl.c index 1437d1dccc..9efccbd2c5 100644 --- a/sysdeps/unix/sysv/linux/powerpc/ioctl.c +++ b/sysdeps/unix/sysv/linux/powerpc/ioctl.c @@ -61,4 +61,5 @@ __ioctl (int fd, unsigned long int request, ...) return result; } +libc_hidden_def (__ioctl) weak_alias (__ioctl, ioctl) diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/ioctl.S b/sysdeps/unix/sysv/linux/tile/tilegx/ioctl.S index e2bf44c75d..43f956399e 100644 --- a/sysdeps/unix/sysv/linux/tile/tilegx/ioctl.S +++ b/sysdeps/unix/sysv/linux/tile/tilegx/ioctl.S @@ -38,4 +38,5 @@ ENTRY (__ioctl) BNEZ r1, 0f jrp lr PSEUDO_END (__ioctl) +libc_hidden_def (__ioctl) weak_alias (__ioctl, ioctl) -- cgit v1.2.3