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Hide __readv and __writev [BZ #18822]

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Hide internal __readv and __writev functions to allow direct access
within libc.so and libc.a without using GOT nor PLT.

	[BZ #18822]
	* include/sys/uio.h (__readv): Add libc_hidden_proto.
	(__writev): Likewise.
	* misc/readv.c (__readv): Add libc_hidden_def.
	* misc/writev.c (__writev): Likewise.
	* sysdeps/posix/readv.c (__readv): Likewise.
	* sysdeps/posix/writev.c (__writev): Likewise.
	* sysdeps/unix/sysv/linux/readv.c: Include <sys/uio.h>.
	(__readv): Likewise.
	* sysdeps/unix/sysv/linux/writev.c: Include <sys/uio.h>.
	(__writev): Likewise.
This commit is contained in:
H.J. Lu
2017-10-01 15:53:52 -07:00
parent b68f862056
commit d6daff1261
8 changed files with 24 additions and 0 deletions
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misc/writev.c
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@ -30,6 +30,7 @@ __writev (int fd, const struct iovec *vector, int count)
__set_errno (ENOSYS);
return -1;
}
libc_hidden_def (__writev)
weak_alias (__writev, writev)
stub_warning (writev)