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Hide internal __ioctl function [BZ #18822]

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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.
This commit is contained in:
H.J. Lu
2017-10-01 15:58:52 -07:00
parent 2ff16592d8
commit 9e5ee8b839
8 changed files with 19 additions and 0 deletions
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1
misc/ioctl.c
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@ -28,4 +28,5 @@ __ioctl (int fd, unsigned long int request, ...)
}
stub_warning (ioctl)
libc_hidden_def (__ioctl)
weak_alias (__ioctl, ioctl)