glibc/io/openat64_2.c

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/* _FORTIFY_SOURCE wrapper for openat64.
Copyright (C) 2013-2016 Free Software Foundation, Inc.
* sysdeps/unix/sysv/linux/open64.c: Move __open64_2 implementation to.. * sysdeps/unix/sysv/linux/open64_2.c: ...here. New file. * sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines): Add open64_2. * sysdeps/unix/sysv/linux/ia64/syscalls.list: Add open and creat entries. * sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise. * sysdeps/wordsize-64/alphasort.c: New file. * sysdeps/wordsize-64/alphasort64.c: New file. * sysdeps/wordsize-64/fseeko.c: New file. * sysdeps/wordsize-64/fseeko64.c: New file. * sysdeps/wordsize-64/ftello.c: New file. * sysdeps/wordsize-64/ftello64.c: New file. * sysdeps/wordsize-64/ftw.c: New file. * sysdeps/wordsize-64/ftw64.c: New file. * sysdeps/wordsize-64/iofgetpos.c: New file. * sysdeps/wordsize-64/iofgetpos64.c: New file. * sysdeps/wordsize-64/iofopen.c: New file. * sysdeps/wordsize-64/iofopen64.c: New file. * sysdeps/wordsize-64/iofsetpos.c: New file. * sysdeps/wordsize-64/iofsetpos64.c: New file. * sysdeps/wordsize-64/lockf.c: New file. * sysdeps/wordsize-64/lockf64.c: New file. * sysdeps/wordsize-64/mkostemp.c: New file. * sysdeps/wordsize-64/mkostemp64.c: New file. * sysdeps/wordsize-64/mkstemp.c: New file. * sysdeps/wordsize-64/mkstemp64.c: New file. * sysdeps/wordsize-64/scandir.c: New file. * sysdeps/wordsize-64/scandir64.c: New file. * sysdeps/wordsize-64/tmpfile.c: New file. * sysdeps/wordsize-64/tmpfile64.c: New file. * sysdeps/wordsize-64/versionsort.c: New file. * sysdeps/wordsize-64/versionsort64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/creat64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/open64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat64.c: New file. * crypt/sha256-crypt.c: Fix a comment. * crypt/sha512-crypt.c: Likewise.
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This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
* sysdeps/unix/sysv/linux/open64.c: Move __open64_2 implementation to.. * sysdeps/unix/sysv/linux/open64_2.c: ...here. New file. * sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines): Add open64_2. * sysdeps/unix/sysv/linux/ia64/syscalls.list: Add open and creat entries. * sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise. * sysdeps/wordsize-64/alphasort.c: New file. * sysdeps/wordsize-64/alphasort64.c: New file. * sysdeps/wordsize-64/fseeko.c: New file. * sysdeps/wordsize-64/fseeko64.c: New file. * sysdeps/wordsize-64/ftello.c: New file. * sysdeps/wordsize-64/ftello64.c: New file. * sysdeps/wordsize-64/ftw.c: New file. * sysdeps/wordsize-64/ftw64.c: New file. * sysdeps/wordsize-64/iofgetpos.c: New file. * sysdeps/wordsize-64/iofgetpos64.c: New file. * sysdeps/wordsize-64/iofopen.c: New file. * sysdeps/wordsize-64/iofopen64.c: New file. * sysdeps/wordsize-64/iofsetpos.c: New file. * sysdeps/wordsize-64/iofsetpos64.c: New file. * sysdeps/wordsize-64/lockf.c: New file. * sysdeps/wordsize-64/lockf64.c: New file. * sysdeps/wordsize-64/mkostemp.c: New file. * sysdeps/wordsize-64/mkostemp64.c: New file. * sysdeps/wordsize-64/mkstemp.c: New file. * sysdeps/wordsize-64/mkstemp64.c: New file. * sysdeps/wordsize-64/scandir.c: New file. * sysdeps/wordsize-64/scandir64.c: New file. * sysdeps/wordsize-64/tmpfile.c: New file. * sysdeps/wordsize-64/tmpfile64.c: New file. * sysdeps/wordsize-64/versionsort.c: New file. * sysdeps/wordsize-64/versionsort64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/creat64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/open64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat64.c: New file. * crypt/sha256-crypt.c: Fix a comment. * crypt/sha512-crypt.c: Likewise.
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#include <fcntl.h>
#include <stdio.h>
int
__openat64_2 (int fd, const char *file, int oflag)
* sysdeps/unix/sysv/linux/open64.c: Move __open64_2 implementation to.. * sysdeps/unix/sysv/linux/open64_2.c: ...here. New file. * sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines): Add open64_2. * sysdeps/unix/sysv/linux/ia64/syscalls.list: Add open and creat entries. * sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise. * sysdeps/wordsize-64/alphasort.c: New file. * sysdeps/wordsize-64/alphasort64.c: New file. * sysdeps/wordsize-64/fseeko.c: New file. * sysdeps/wordsize-64/fseeko64.c: New file. * sysdeps/wordsize-64/ftello.c: New file. * sysdeps/wordsize-64/ftello64.c: New file. * sysdeps/wordsize-64/ftw.c: New file. * sysdeps/wordsize-64/ftw64.c: New file. * sysdeps/wordsize-64/iofgetpos.c: New file. * sysdeps/wordsize-64/iofgetpos64.c: New file. * sysdeps/wordsize-64/iofopen.c: New file. * sysdeps/wordsize-64/iofopen64.c: New file. * sysdeps/wordsize-64/iofsetpos.c: New file. * sysdeps/wordsize-64/iofsetpos64.c: New file. * sysdeps/wordsize-64/lockf.c: New file. * sysdeps/wordsize-64/lockf64.c: New file. * sysdeps/wordsize-64/mkostemp.c: New file. * sysdeps/wordsize-64/mkostemp64.c: New file. * sysdeps/wordsize-64/mkstemp.c: New file. * sysdeps/wordsize-64/mkstemp64.c: New file. * sysdeps/wordsize-64/scandir.c: New file. * sysdeps/wordsize-64/scandir64.c: New file. * sysdeps/wordsize-64/tmpfile.c: New file. * sysdeps/wordsize-64/tmpfile64.c: New file. * sysdeps/wordsize-64/versionsort.c: New file. * sysdeps/wordsize-64/versionsort64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/creat64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/open64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat64.c: New file. * crypt/sha256-crypt.c: Fix a comment. * crypt/sha512-crypt.c: Likewise.
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{
linux: open and openat ignore 'mode' with O_TMPFILE in flags Both open and openat load their last argument 'mode' lazily, using va_arg() only if O_CREAT is found in oflag. This is wrong, mode is also necessary if O_TMPFILE is in oflag. By chance on x86_64, the problem wasn't evident when using O_TMPFILE with open, as the 3rd argument of open, even when not loaded with va_arg, is left untouched in RDX, where the syscall expects it. However, openat was not so lucky, and O_TMPFILE couldn't be used: mode is the 4th argument, in RCX, but the syscall expects its 4th argument in a different register than the glibc wrapper, in R10. Introduce a macro __OPEN_NEEDS_MODE (oflag) to test if either O_CREAT or O_TMPFILE is set in oflag. Tested on Linux x86_64. [BZ #17523] * io/fcntl.h (__OPEN_NEEDS_MODE): New macro. * io/bits/fcntl2.h (open): Use it. (openat): Likewise. * io/open.c (__libc_open): Likewise. * io/open64.c (__libc_open64): Likewise. * io/open64_2.c (__open64_2): Likewise. * io/open_2.c (__open_2): Likewise. * io/openat.c (__openat): Likewise. * io/openat64.c (__openat64): Likewise. * io/openat64_2.c (__openat64_2): Likewise. * io/openat_2.c (__openat_2): Likewise. * sysdeps/mach/hurd/open.c (__libc_open): Likewise. * sysdeps/mach/hurd/openat.c (__openat): Likewise. * sysdeps/posix/open64.c (__libc_open64): Likewise. * sysdeps/unix/sysv/linux/dl-openat64.c (openat64): Likewise. * sysdeps/unix/sysv/linux/generic/open.c (__libc_open): Likewise. (__open_nocancel): Likewise. * sysdeps/unix/sysv/linux/generic/open64.c (__libc_open64): Likewise. * sysdeps/unix/sysv/linux/open64.c (__libc_open64): Likewise. * sysdeps/unix/sysv/linux/openat.c (__OPENAT): Likewise.
2015-02-24 15:42:26 +08:00
if (__OPEN_NEEDS_MODE (oflag))
__fortify_fail ("invalid openat64 call: O_CREAT or O_TMPFILE without mode");
* sysdeps/unix/sysv/linux/open64.c: Move __open64_2 implementation to.. * sysdeps/unix/sysv/linux/open64_2.c: ...here. New file. * sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines): Add open64_2. * sysdeps/unix/sysv/linux/ia64/syscalls.list: Add open and creat entries. * sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise. * sysdeps/wordsize-64/alphasort.c: New file. * sysdeps/wordsize-64/alphasort64.c: New file. * sysdeps/wordsize-64/fseeko.c: New file. * sysdeps/wordsize-64/fseeko64.c: New file. * sysdeps/wordsize-64/ftello.c: New file. * sysdeps/wordsize-64/ftello64.c: New file. * sysdeps/wordsize-64/ftw.c: New file. * sysdeps/wordsize-64/ftw64.c: New file. * sysdeps/wordsize-64/iofgetpos.c: New file. * sysdeps/wordsize-64/iofgetpos64.c: New file. * sysdeps/wordsize-64/iofopen.c: New file. * sysdeps/wordsize-64/iofopen64.c: New file. * sysdeps/wordsize-64/iofsetpos.c: New file. * sysdeps/wordsize-64/iofsetpos64.c: New file. * sysdeps/wordsize-64/lockf.c: New file. * sysdeps/wordsize-64/lockf64.c: New file. * sysdeps/wordsize-64/mkostemp.c: New file. * sysdeps/wordsize-64/mkostemp64.c: New file. * sysdeps/wordsize-64/mkstemp.c: New file. * sysdeps/wordsize-64/mkstemp64.c: New file. * sysdeps/wordsize-64/scandir.c: New file. * sysdeps/wordsize-64/scandir64.c: New file. * sysdeps/wordsize-64/tmpfile.c: New file. * sysdeps/wordsize-64/tmpfile64.c: New file. * sysdeps/wordsize-64/versionsort.c: New file. * sysdeps/wordsize-64/versionsort64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/creat64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/open64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat64.c: New file. * crypt/sha256-crypt.c: Fix a comment. * crypt/sha512-crypt.c: Likewise.
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return __openat64 (fd, file, oflag);
* sysdeps/unix/sysv/linux/open64.c: Move __open64_2 implementation to.. * sysdeps/unix/sysv/linux/open64_2.c: ...here. New file. * sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines): Add open64_2. * sysdeps/unix/sysv/linux/ia64/syscalls.list: Add open and creat entries. * sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise. * sysdeps/wordsize-64/alphasort.c: New file. * sysdeps/wordsize-64/alphasort64.c: New file. * sysdeps/wordsize-64/fseeko.c: New file. * sysdeps/wordsize-64/fseeko64.c: New file. * sysdeps/wordsize-64/ftello.c: New file. * sysdeps/wordsize-64/ftello64.c: New file. * sysdeps/wordsize-64/ftw.c: New file. * sysdeps/wordsize-64/ftw64.c: New file. * sysdeps/wordsize-64/iofgetpos.c: New file. * sysdeps/wordsize-64/iofgetpos64.c: New file. * sysdeps/wordsize-64/iofopen.c: New file. * sysdeps/wordsize-64/iofopen64.c: New file. * sysdeps/wordsize-64/iofsetpos.c: New file. * sysdeps/wordsize-64/iofsetpos64.c: New file. * sysdeps/wordsize-64/lockf.c: New file. * sysdeps/wordsize-64/lockf64.c: New file. * sysdeps/wordsize-64/mkostemp.c: New file. * sysdeps/wordsize-64/mkostemp64.c: New file. * sysdeps/wordsize-64/mkstemp.c: New file. * sysdeps/wordsize-64/mkstemp64.c: New file. * sysdeps/wordsize-64/scandir.c: New file. * sysdeps/wordsize-64/scandir64.c: New file. * sysdeps/wordsize-64/tmpfile.c: New file. * sysdeps/wordsize-64/tmpfile64.c: New file. * sysdeps/wordsize-64/versionsort.c: New file. * sysdeps/wordsize-64/versionsort64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_read64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/aio_write64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/creat64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/lio_listio64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/open64.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat.c: New file. * sysdeps/unix/sysv/linux/wordsize-64/openat64.c: New file. * crypt/sha256-crypt.c: Fix a comment. * crypt/sha512-crypt.c: Likewise.
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}