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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-01 15:53:52 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-01 15:54:10 -0700 |
| commit | d6daff12617290d4dfb499ed8425d33a48d844ba (patch) | |
| tree | 8cc815db5ac1558ecd139ec7c9cece391865b48c | |
| parent | b68f8620561d7658b475eb512978d3c33d8a4547 (diff) | |
| download | glibc-d6daff12617290d4dfb499ed8425d33a48d844ba.tar glibc-d6daff12617290d4dfb499ed8425d33a48d844ba.tar.gz glibc-d6daff12617290d4dfb499ed8425d33a48d844ba.tar.bz2 glibc-d6daff12617290d4dfb499ed8425d33a48d844ba.zip | |
Hide __readv and __writev [BZ #18822]
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.
| -rw-r--r-- | ChangeLog | 14 | ||||
| -rw-r--r-- | include/sys/uio.h | 2 | ||||
| -rw-r--r-- | misc/readv.c | 1 | ||||
| -rw-r--r-- | misc/writev.c | 1 | ||||
| -rw-r--r-- | sysdeps/posix/readv.c | 1 | ||||
| -rw-r--r-- | sysdeps/posix/writev.c | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/readv.c | 2 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/writev.c | 2 |
8 files changed, 24 insertions, 0 deletions
@@ -1,6 +1,20 @@ 2017-10-01 H.J. Lu <hongjiu.lu@intel.com> [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. + +2017-10-01 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #18822] * include/regex.h (__re_compile_fastmap): Add attribute_hidden. (__regcomp): Add libc_hidden_proto. (__regexec): Likewise. diff --git a/include/sys/uio.h b/include/sys/uio.h index 20860bfd82..204c4b906d 100644 --- a/include/sys/uio.h +++ b/include/sys/uio.h @@ -5,8 +5,10 @@ /* Now define the internal interfaces. */ extern ssize_t __readv (int __fd, const struct iovec *__iovec, int __count); +libc_hidden_proto (__readv) extern ssize_t __writev (int __fd, const struct iovec *__iovec, int __count); +libc_hidden_proto (__writev) /* Used for p{read,write}{v64}v2 implementation. */ libc_hidden_proto (preadv) diff --git a/misc/readv.c b/misc/readv.c index 064f88523c..9ad94d370a 100644 --- a/misc/readv.c +++ b/misc/readv.c @@ -30,6 +30,7 @@ __readv (int fd, const struct iovec *vector, int count) __set_errno (ENOSYS); return -1; } +libc_hidden_def (__readv) weak_alias (__readv, readv) stub_warning (readv) diff --git a/misc/writev.c b/misc/writev.c index c8d222e04f..8bd2eddf1a 100644 --- a/misc/writev.c +++ b/misc/writev.c @@ -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) diff --git a/sysdeps/posix/readv.c b/sysdeps/posix/readv.c index 5b0c124e89..2875c76daf 100644 --- a/sysdeps/posix/readv.c +++ b/sysdeps/posix/readv.c @@ -88,4 +88,5 @@ __readv (int fd, const struct iovec *vector, int count) return bytes_read; } +libc_hidden_def (__readv) weak_alias (__readv, readv) diff --git a/sysdeps/posix/writev.c b/sysdeps/posix/writev.c index 7ce1deb80f..89d463033a 100644 --- a/sysdeps/posix/writev.c +++ b/sysdeps/posix/writev.c @@ -88,4 +88,5 @@ __writev (int fd, const struct iovec *vector, int count) return bytes_written; } +libc_hidden_def (__writev) weak_alias (__writev, writev) diff --git a/sysdeps/unix/sysv/linux/readv.c b/sysdeps/unix/sysv/linux/readv.c index 142a0a92a7..e4713008f1 100644 --- a/sysdeps/unix/sysv/linux/readv.c +++ b/sysdeps/unix/sysv/linux/readv.c @@ -17,6 +17,7 @@ <http://www.gnu.org/licenses/>. */ #include <unistd.h> +#include <sys/uio.h> #include <sysdep-cancel.h> ssize_t @@ -24,4 +25,5 @@ __readv (int fd, const struct iovec *iov, int iovcnt) { return SYSCALL_CANCEL (readv, fd, iov, iovcnt); } +libc_hidden_def (__readv) weak_alias (__readv, readv) diff --git a/sysdeps/unix/sysv/linux/writev.c b/sysdeps/unix/sysv/linux/writev.c index 1b56cbb709..2495fd938a 100644 --- a/sysdeps/unix/sysv/linux/writev.c +++ b/sysdeps/unix/sysv/linux/writev.c @@ -17,6 +17,7 @@ <http://www.gnu.org/licenses/>. */ #include <unistd.h> +#include <sys/uio.h> #include <sysdep-cancel.h> ssize_t @@ -24,4 +25,5 @@ __writev (int fd, const struct iovec *iov, int iovcnt) { return SYSCALL_CANCEL (writev, fd, iov, iovcnt); } +libc_hidden_def (__writev) weak_alias (__writev, writev) |