+2017-05-31 Adhemerval Zanella <adhemerval.zanella@linaro.org>
+
+ * NEWS: Add note about pwritev2 and preadv2 inclusion.
+ * misc/Makefile (routines): Add preadv2, preadv64v2, pwritev2, and
+ pwritev64v2.
+ (tests): Add tst-preadvwritev2 and tst-preadvwritev64v2.
+ * misc/Versions (GLIBC_2.26): Add preadv2, preadv64v2, pwritev2, and
+ pwritev64v2.
+ * misc/preadv2.c: New file.
+ * misc/preadv64v2.c: Likewise.
+ * misc/pwritev2.c: Likewise.
+ * misc/pwritev64v2.c: Likewise.
+ * misc/tst-preadvwritev2.c: Likewise.
+ * misc/tst-preadvwritev64v2.c: Likewise.
+ * manual/llio.texi: Add preadv2 and pwritev2 documentation.
+ * misc/sys/uio.h [__USE_GNU && !__USE_FILE_OFFSET64] (preadv2): New
+ prototype.
+ [__USE_GNU && !__USE_FILE_OFFSET64] (pwritev2): Likewise.
+ [__USE_GNU && __USE_FILE_OFFSET64] (preadv64v2): Likewise.
+ [__USE_GNU && __USE_FILE_OFFSET64] (pwritev64v2): Likewise.
+ * misc/tst-preadvwritev-common.c (PREADV): Define if not defined.
+ (PWRITEV): Likewise.
+ (do_test_with_offset): Use PREADV and PWRITEV macros and check for
+ ENOSYS.
+ * nptl/tst-cancel4.c (tf_pwritev2): New test.
+ (tf_preadv2): Likewise.
+ (tf_fsync): Add tf_pwritev2 and tf_preadv2.
+ * sysdeps/posix/preadv2.c: Likewise.
+ * sysdeps/posix/preadv64v2.c: Likewise.
+ * sysdeps/posix/pwritev2.c: Likewise.
+ * sysdeps/posix/pwritev64v2.c: Likewise.
+ * sysdeps/unix/sysv/linux/kernel-features.h: Add comment for syscall
+ support in kernel.
+ * sysdeps/unix/sysv/linux/preadv2.c: Likewise.
+ * sysdeps/unix/sysv/linux/preadv64v2.c: Likewise.
+ * sysdeps/unix/sysv/linux/pwritev2.c: Likewise.
+ * sysdeps/unix/sysv/linux/pwritev64v2.c: Likewise.
+ * sysdeps/unix/sysv/linux/preadv.c (preadv): Add libc_hidden_def.
+ * sysdeps/unix/sysv/linux/preadv64.c (preadv64): Likewise.
+ * sysdeps/unix/sysv/linux/pwritev.c (pwritev): Likewise.
+ * sysdeps/unix/sysv/linux/pwritev64.c (pwritev64): Likewise.
+ * sysdeps/unix/sysv/linux/bits/uio.h: Add supported preadv2/pwritev2
+ support flags on Linux.
+ * sysdeps/unix/sysv/linux/aarch64/libc.abilist (GLIBC_2.26): Add
+ preadv2, preadv64v2, pwritev2, pwritev64v2.
+ * sysdeps/unix/sysv/linux/alpha/libc.abilist (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/arm/libc.abilist (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/hppa/libc.abilist (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/i386/libc.abilist (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/ia64/libc.abilist (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/microblaze/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/nios2/libc.abilist (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+ (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+ (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
+ (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/sh/libc.abilist (GLIBC_2.26): Likewise.
+ * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/sysv/linux/tile/tilegx/tilegx32/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/sysv/linux/tile/tilegx/tilegx64/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist (GLIBC_2.26):
+ Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist (GLIBC_2.26):
+ Likewise.
+
2017-05-31 Andreas Schwab <schwab@suse.de>
* nptl/tst-fork3.c: Include <support/test-driver.c>.
replacement with a check for integer overflow when calculating total
allocation size.
+* New preadv2 and pwritev2 has been added. They are Linux extensions to
+ preadv and pwritev with an additional flag argument where it is possible
+ to set high priority or use O_DSYNC or O_SYNC for a specific IO operation.
+ For complete support it requires Linux kernel version 4.6, otherwise a
+ compat implementation will be used (which refuses all flags and routes it
+ to preadv or pwritev).
+
Security related changes:
* The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
int __count);
extern ssize_t __writev (int __fd, const struct iovec *__iovec,
int __count);
+
+/* Used for p{read,write}{v64}v2 implementation. */
+libc_hidden_proto (preadv)
+libc_hidden_proto (preadv64)
+libc_hidden_proto (pwritev)
+libc_hidden_proto (pwritev64)
#endif
#endif
@code{pwritev} and so transparently replaces the 32 bit interface.
@end deftypefun
+@comment sys/uio.h
+@comment GNU
+@deftypefun ssize_t preadv2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off_t @var{offset}, int @var{flags})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+@c This is a syscall for Linux v4.6. The sysdeps/posix fallback emulation
+@c is also MT-Safe since it calls preadv.
+
+This function is similar to the @code{preadv} function, with the difference
+it adds an extra @var{flags} parameter of type @code{int}. The supported
+@var{flags} are dependent of the underlying system. For Linux it supports:
+
+@vtable @code
+@item RWF_HIPRI
+High priority request. This adds a flag that tells the file system that
+this is a high priority request for which it is worth to poll the hardware.
+The flag is purely advisory and can be ignored if not supported. The
+@var{fd} must be opened using @code{O_DIRECT}.
+
+@item RWF_DSYNC
+Per-IO synchronization as if the file was opened with @code{O_DSYNC} flag.
+
+@item RWF_SYNC
+Per-IO synchronization as if the file was opened with @code{O_SYNC} flag.
+@end vtable
+
+When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} the
+@code{preadv2} function is in fact @code{preadv64v2} and the type
+@code{off_t} has 64 bits, which makes it possible to handle files up to
+@twoexp{63} bytes in length.
+
+The return value is a count of bytes (@emph{not} buffers) read, @math{0}
+indicating end-of-file, or @math{-1} indicating an error. The possible
+errors are the same as in @code{preadv} with the addition of:
+
+@table @code
+
+@item EOPNOTSUPP
+
+@c The default sysdeps/posix code will return it for any flags value
+@c different than 0.
+An unsupported @var{flags} was used.
+
+@end table
+
+@end deftypefun
+
+@comment unistd.h
+@comment GNU
+@deftypefun ssize_t preadv64v2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off64_t @var{offset}, int @var{flags})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+@c This is a syscall for Linux v4.6. The sysdeps/posix fallback emulation
+@c is also MT-Safe since it calls preadv.
+
+This function is similar to the @code{preadv2} function with the difference
+is that the @var{offset} parameter is of type @code{off64_t} instead of
+@code{off_t}. It makes it possible on 32 bit machines to address
+files larger than @twoexp{31} bytes and up to @twoexp{63} bytes. The
+file descriptor @code{filedes} must be opened using @code{open64} since
+otherwise the large offsets possible with @code{off64_t} will lead to
+errors with a descriptor in small file mode.
+
+When the source file is compiled using @code{_FILE_OFFSET_BITS == 64} on a
+32 bit machine this function is actually available under the name
+@code{preadv2} and so transparently replaces the 32 bit interface.
+@end deftypefun
+
+
+@comment sys/uio.h
+@comment GNU
+@deftypefun ssize_t pwritev2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off_t @var{offset}, int @var{flags})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+@c This is a syscall for Linux v4.6. The sysdeps/posix fallback emulation
+@c is also MT-Safe since it calls pwritev.
+
+This function is similar to the @code{pwritev} function, with the difference
+it adds an extra @var{flags} parameter of type @code{int}. The supported
+@var{flags} are dependent of the underlying system and for Linux it supports
+the same ones as for @code{preadv2}.
+
+When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} the
+@code{pwritev2} function is in fact @code{pwritev64v2} and the type
+@code{off_t} has 64 bits, which makes it possible to handle files up to
+@twoexp{63} bytes in length.
+
+The return value is a count of bytes (@emph{not} buffers) write, @math{0}
+indicating end-of-file, or @math{-1} indicating an error. The possible
+errors are the same as in @code{preadv2}.
+@end deftypefun
+
+@comment unistd.h
+@comment GNU
+@deftypefun ssize_t pwritev64v2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off64_t @var{offset}, int @var{flags})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+@c This is a syscall for Linux v4.6. The sysdeps/posix fallback emulation
+@c is also MT-Safe since it calls pwritev.
+
+This function is similar to the @code{pwritev2} function with the difference
+is that the @var{offset} parameter is of type @code{off64_t} instead of
+@code{off_t}. It makes it possible on 32 bit machines to address
+files larger than @twoexp{31} bytes and up to @twoexp{63} bytes. The
+file descriptor @code{filedes} must be opened using @code{open64} since
+otherwise the large offsets possible with @code{off64_t} will lead to
+errors with a descriptor in small file mode.
+
+When the source file is compiled using @code{_FILE_OFFSET_BITS == 64} on a
+32 bit machine this function is actually available under the name
+@code{pwritev2} and so transparently replaces the 32 bit interface.
+@end deftypefun
+
@node File Position Primitive
@section Setting the File Position of a Descriptor
routines := brk sbrk sstk ioctl \
readv writev preadv preadv64 pwritev pwritev64 \
+ preadv2 preadv64v2 pwritev2 pwritev64v2 \
setreuid setregid \
seteuid setegid \
getpagesize \
tests := tst-dirname tst-tsearch tst-fdset tst-efgcvt tst-mntent tst-hsearch \
tst-error1 tst-pselect tst-insremque tst-mntent2 bug-hsearch1 \
tst-mntent-blank-corrupt tst-mntent-blank-passno bug18240 \
- tst-preadvwritev tst-preadvwritev64 tst-makedev tst-empty
+ tst-preadvwritev tst-preadvwritev64 tst-makedev tst-empty \
+ tst-preadvwritev2 tst-preadvwritev64v2
tests-internal := tst-atomic tst-atomic-long
tests-static := tst-empty
GLIBC_2.25 {
gnu_dev_major; gnu_dev_minor; gnu_dev_makedev;
}
+ GLIBC_2.26 {
+ preadv2; preadv64v2; pwritev2; pwritev64v2;
+ }
GLIBC_PRIVATE {
__madvise;
__mktemp;
--- /dev/null
+/* Default implementation of preadv2.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <sys/uio.h>
+
+/* Same as preadv but with an additional flags argument. */
+ssize_t
+preadv2 (int fd, const struct iovec *vector, int count, off_t offset,
+ int flags)
+{
+ __set_errno (ENOSYS);
+ return -1;
+}
+
+stub_warning (preadv2)
--- /dev/null
+/* Default implementation of preadv2 (LFS version).
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <sys/uio.h>
+
+/* Same as preadv64 but with an addional flag argument. */
+ssize_t
+preadv64v2 (int fd, const struct iovec *vector, int count, off64_t offset,
+ int flags)
+{
+ __set_errno (ENOSYS);
+ return -1;
+}
+
+stub_warning (preadv64v2)
--- /dev/null
+/* Default implementation of pwritev2.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <sys/uio.h>
+
+/* Same as pwritev but with an additional flags argument. */
+ssize_t
+pwritev2 (int fd, const struct iovec *vector, int count, off_t offset,
+ int flags)
+{
+ __set_errno (ENOSYS);
+ return -1;
+}
+
+stub_warning (pwritev2)
--- /dev/null
+/* Default implementation of pwritev2 (LFS version).
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <sys/uio.h>
+
+/* Same as preadv64 but with an addional flag argument. */
+ssize_t
+pwritev64v2 (int fd, const struct iovec *vector, int count, off64_t offset,
+ int flags)
+{
+ __set_errno (ENOSYS);
+ return -1;
+}
+
+stub_warning (pwritev64v2)
__THROW. */
extern ssize_t pwritev (int __fd, const struct iovec *__iovec, int __count,
__off_t __offset) __wur;
+
# else
# ifdef __REDIRECT
extern ssize_t __REDIRECT (preadv, (int __fd, const struct iovec *__iovec,
# endif
#endif /* Use misc. */
+
+#ifdef __USE_GNU
+# ifndef __USE_FILE_OFFSET64
+/* Same as preadv but with an additional flag argumenti defined at uio.h. */
+extern ssize_t preadv2 (int __fp, const struct iovec *__iovec, int __count,
+ __off_t __offset, int ___flags) __wur;
+
+/* Same as preadv but with an additional flag argument defined at uio.h. */
+extern ssize_t pwritev2 (int __fd, const struct iovec *__iodev, int __count,
+ __off_t __offset, int __flags) __wur;
+
+# else
+# ifdef __REDIRECT
+extern ssize_t __REDIRECT (pwritev2, (int __fd, const struct iovec *__iovec,
+ int __count, __off64_t __offset,
+ int __flags),
+ pwritev64v2) __wur;
+extern ssize_t __REDIRECT (preadv2, (int __fd, const struct iovec *__iovec,
+ int __count, __off64_t __offset,
+ int __flags),
+ preadv64v2) __wur;
+# else
+# define preadv2 preadv64v2
+# define pwritev2 pwritev64v2
+# endif
+# endif
+
+# ifdef __USE_LARGEFILE64
+/* Same as preadv but with an additional flag argumenti defined at uio.h. */
+extern ssize_t preadv64v2 (int __fp, const struct iovec *__iovec,
+ int __count, __off64_t __offset,
+ int ___flags) __wur;
+
+/* Same as preadv but with an additional flag argument defined at uio.h. */
+extern ssize_t pwritev64v2 (int __fd, const struct iovec *__iodev,
+ int __count, __off64_t __offset,
+ int __flags) __wur;
+# endif
+#endif /* Use GNU. */
+
__END_DECLS
#endif /* sys/uio.h */
#include <stdio.h>
#include <stdint.h>
+#include <errno.h>
#include <string.h>
#include <sys/uio.h>
#include <sys/stat.h>
}
#define PREPARE do_prepare
+#ifndef PREADV
+# define PREADV(__fd, __iov, __iovcnt, __offset) \
+ preadv (__fd, __iov, __iovcnt, __offset)
+#endif
+
+#ifndef PWRITEV
+# define PWRITEV(__fd, __iov, __iovcnt, __offset) \
+ pwritev (__fd, __iov, __iovcnt, __offset)
+#endif
+
static int
do_test_with_offset (off_t offset)
{
iov[1].iov_base = buf2;
iov[1].iov_len = sizeof buf2;
- ret = pwritev (temp_fd, iov, 2, offset);
+ ret = PWRITEV (temp_fd, iov, 2, offset);
if (ret == -1)
FAIL_RET ("first pwritev returned -1");
if (ret != (sizeof buf1 + sizeof buf2))
FAIL_RET ("first pwritev returned an unexpected value");
- ret = pwritev (temp_fd, iov, 2, sizeof buf1 + sizeof buf2 + offset);
+ ret = PWRITEV (temp_fd, iov, 2, sizeof buf1 + sizeof buf2 + offset);
if (ret == -1)
FAIL_RET ("second pwritev returned -1");
if (ret != (sizeof buf1 + sizeof buf2))
iov[1].iov_len = sizeof buf4;
/* Now read two buffer with 32 and 64 bytes respectively. */
- ret = preadv (temp_fd, iov, 2, offset);
+ ret = PREADV (temp_fd, iov, 2, offset);
if (ret == -1)
FAIL_RET ("first preadv returned -1");
if (ret != (sizeof buf3 + sizeof buf4))
if (memcmp (buf2, buf4, sizeof buf2) != 0)
FAIL_RET ("second buffer from first preadv different than expected");
- ret = preadv (temp_fd, iov, 2, sizeof buf3 + sizeof buf4 + offset);
+ ret = PREADV (temp_fd, iov, 2, sizeof buf3 + sizeof buf4 + offset);
if (ret == -1)
FAIL_RET ("second preadv returned -1");
if (ret != (sizeof buf3 + sizeof buf4))
--- /dev/null
+/* Tests for preadv2 and pwritev2.
+ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#define PREADV(__fd, __iov, __iovcnt, __offset) \
+ preadv2 (__fd, __iov, __iovcnt, __offset, 0)
+
+#define PWRITEV(__fd, __iov, __iovcnt, __offset) \
+ pwritev2 (__fd, __iov, __iovcnt, __offset, 0)
+
+#include "tst-preadvwritev-common.c"
+
+static int
+do_test (void)
+{
+ return do_test_with_offset (0);
+}
--- /dev/null
+/* Tests for preadv2 and pwritev2 (LFS version).
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#define _FILE_OFFSET_BITS 64
+
+#define PREADV(__fd, __iov, __iovcnt, __offset) \
+ preadv2 (__fd, __iov, __iovcnt, __offset, 0)
+
+#define PWRITEV(__fd, __iov, __iovcnt, __offset) \
+ pwritev2 (__fd, __iov, __iovcnt, __offset, 0)
+
+#include "tst-preadvwritev-common.c"
+
+static int
+do_test (void)
+{
+ return do_test_with_offset (0);
+}
}
static void *
+tf_pwritev2 (void *arg)
+{
+ int fd;
+
+ if (arg == NULL)
+ /* XXX If somebody can provide a portable test case in which pwritev2
+ blocks we can enable this test to run in both rounds. */
+ abort ();
+
+ errno = 0;
+
+ char fname[] = "/tmp/tst-cancel4-fd-XXXXXX";
+ tempfd = fd = mkstemp (fname);
+ if (fd == -1)
+ FAIL_EXIT1 ("mkstemp: %m");
+ unlink (fname);
+
+ xpthread_barrier_wait (&b2);
+
+ xpthread_barrier_wait (&b2);
+
+ ssize_t s;
+ pthread_cleanup_push (cl, NULL);
+
+ char buf[WRITE_BUFFER_SIZE];
+ memset (buf, '\0', sizeof (buf));
+ struct iovec iov[1] = { [0] = { .iov_base = buf, .iov_len = sizeof (buf) } };
+ s = pwritev2 (fd, iov, 1, 0, 0);
+
+ pthread_cleanup_pop (0);
+
+ FAIL_EXIT1 ("pwritev2 returns with %zd", s);
+}
+
+static void *
+tf_preadv2 (void *arg)
+{
+ int fd;
+
+ if (arg == NULL)
+ /* XXX If somebody can provide a portable test case in which preadv2
+ blocks we can enable this test to run in both rounds. */
+ abort ();
+
+ errno = 0;
+
+ char fname[] = "/tmp/tst-cancel4-fd-XXXXXX";
+ tempfd = fd = mkstemp (fname);
+ if (fd == -1)
+ FAIL_EXIT1 ("mkstemp failed: %m");
+ unlink (fname);
+
+ xpthread_barrier_wait (&b2);
+
+ xpthread_barrier_wait (&b2);
+
+ ssize_t s;
+ pthread_cleanup_push (cl, NULL);
+
+ char buf[100];
+ struct iovec iov[1] = { [0] = { .iov_base = buf, .iov_len = sizeof (buf) } };
+ s = preadv2 (fd, iov, 1, 0, 0);
+
+ pthread_cleanup_pop (0);
+
+ FAIL_EXIT1 ("preadv2 returns with %zd", s);
+}
+
+static void *
tf_fsync (void *arg)
{
if (arg == NULL)
ADD_TEST (recvfrom, 2, 0),
ADD_TEST (recvmsg, 2, 0),
ADD_TEST (preadv, 2, 1),
+ ADD_TEST (preadv2, 2, 1),
ADD_TEST (pwritev, 2, 1),
+ ADD_TEST (pwritev2, 2, 1),
ADD_TEST (open, 2, 1),
ADD_TEST (close, 2, 1),
ADD_TEST (pread, 2, 1),
--- /dev/null
+/* Generic version of preadv2.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <unistd.h>
+#include <sys/uio.h>
+
+#ifndef __OFF_T_MATCHES_OFF64_T
+
+/* Since we define no flags for preadv2 just route to preadv. */
+ssize_t
+preadv2 (int fd, const struct iovec *vector, int count, OFF_T offset,
+ int flags)
+{
+ if (flags != 0)
+ {
+ __set_errno (EOPNOTSUPP);
+ return -1;
+ }
+
+ return preadv (fd, vector, count, offset);
+}
+
+#endif
--- /dev/null
+/* Generic version of preadv2.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <unistd.>
+#include <sys/uio.h>
+
+ssize_t
+preadv64v2 (int fd, const struct iovec *vector, int count, OFF_T offset,
+ int flags)
+{
+ if (flags != 0)
+ {
+ __set_errno (EOPNOTSUPP);
+ return -1;
+ }
+
+ return preadv64 (fd, vector, count, offset);
+}
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+strong_alias (preadv64v2, preadv2)
+#endif
--- /dev/null
+/* Generic version of pwritev2.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <unistd.h>
+#include <sys/uio.h>
+
+#ifndef __OFF_T_MATCHES_OFF64_T
+
+/* Since we define no flags for pwritev2 just route to pwritev. */
+ssize_t
+pwritev2 (int fd, const struct iovec *vector, int count, OFF_T offset,
+ int flags)
+{
+ if (flags != 0)
+ {
+ __set_errno (EOPNOTSUPP);
+ return -1;
+ }
+
+ return pwritev (fd, vector, count, offset);
+}
+
+#endif
--- /dev/null
+/* Generic version of pwritev2.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <unistd.h>
+#include <sys/uio.h>
+
+/* Since we define no flags for pwritev2 just route to pwritev. */
+ssize_t
+pwritev64v2 (int fd, const struct iovec *vector, int count, OFF_T offset,
+ int flags)
+{
+ if (flags != 0)
+ {
+ __set_errno (EOPNOTSUPP);
+ return -1;
+ }
+
+ return pwritev64 (fd, vector, count, offset);
+}
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+strong_alias (pwritev64v2, pwritev2)
+#endif
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 _Exit F
__END_DECLS
# endif
+
+/* Flags for preadv2/pwritev2: */
+#define RWF_HIPRI 0x00000001 /* High priority request. */
+#define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC. */
+#define RWF_SYNC 0x00000004 /* per-IO O_SYNC. */
+
#endif
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
/* Support for SysV IPC through wired syscalls. All supported architectures
either support ipc syscall and/or all the ipc correspondent syscalls. */
#define __ASSUME_DIRECT_SYSVIPC_SYSCALLS 1
+
+/* Support for p{read,write}v2 was added in 4.6. However Linux default
+ implementation does not assume the __ASSUME_* and instead use a fallback
+ implementation based on p{read,write}v and returning an error for
+ non supported flags. */
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.4 GLIBC_2.4 A
GLIBC_2.4 _Exit F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 _Exit F
# define OFF_T off_t
# include <sysdeps/posix/preadv_common.c>
# endif /* __ASSUME_PREADV */
+
+libc_hidden_def (preadv)
#endif
--- /dev/null
+/* Linux implementation of preadv2.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <sys/uio.h>
+#include <sysdep-cancel.h>
+
+#ifndef __OFF_T_MATCHES_OFF64_T
+
+# if !defined (__NR_preadv2) && defined (__NR_pread64v2)
+# define __NR_preadv2 __NR_pread64v2
+# endif
+
+ssize_t
+preadv2 (int fd, const struct iovec *vector, int count, off_t offset,
+ int flags)
+{
+# ifdef __NR_preadv2
+ ssize_t result = SYSCALL_CANCEL (preadv2, fd, vector, count,
+ LO_HI_LONG (offset), flags);
+ if (result >= 0 || errno != ENOSYS)
+ return result;
+# endif
+ /* Trying to emulate the preadv2 syscall flags is troublesome:
+
+ * We can not temporary change the file state of the O_DSYNC and O_SYNC
+ flags to emulate RWF_{D}SYNC (attempts to change the state of using
+ fcntl are silently ignored).
+
+ * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
+ semantic not provided by any other flag (O_NONBLOCK for instance). */
+
+ if (flags != 0)
+ {
+ __set_errno (EOPNOTSUPP);
+ return -1;
+ }
+ return preadv (fd, vector, count, offset);
+}
+
+#endif
# define OFF_T off64_t
# include <sysdeps/posix/preadv_common.c>
#endif
+libc_hidden_def (preadv64)
#ifdef __OFF_T_MATCHES_OFF64_T
strong_alias (preadv64, preadv)
+libc_hidden_def (preadv)
#endif
--- /dev/null
+/* Linux implementation of preadv2 (LFS version).
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <sys/uio.h>
+#include <sysdep-cancel.h>
+
+#if !defined(__NR_preadv64v2) && defined(__NR_preadv2)
+# define __NR_preadv64v2 __NR_preadv2
+#endif
+
+ssize_t
+preadv64v2 (int fd, const struct iovec *vector, int count, off64_t offset,
+ int flags)
+{
+#ifdef __NR_preadv64v2
+ ssize_t result = SYSCALL_CANCEL (preadv64v2, fd, vector, count,
+ LO_HI_LONG (offset), flags);
+ if (result >= 0 || errno != ENOSYS)
+ return result;
+#endif
+ /* Trying to emulate the preadv2 syscall flags is troublesome:
+
+ * We can not temporary change the file state of the O_DSYNC and O_SYNC
+ flags to emulate RWF_{D}SYNC (attempts to change the state of using
+ fcntl are silently ignored).
+
+ * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
+ semantic not provided by any other flag (O_NONBLOCK for instance). */
+
+ if (flags != 0)
+ {
+ __set_errno (EOPNOTSUPP);
+ return -1;
+ }
+ return preadv64 (fd, vector, count, offset);
+}
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+strong_alias (preadv64v2, preadv2)
+#endif
{
return SYSCALL_CANCEL (pwrite64, fd, buf, count, SYSCALL_LL64_PRW (offset));
}
+
weak_alias (__libc_pwrite64, __pwrite64)
libc_hidden_weak (__pwrite64)
weak_alias (__libc_pwrite64, pwrite64)
# define OFF_T off_t
# include <sysdeps/posix/pwritev_common.c>
# endif /* __ASSUME_PREADV */
+
+libc_hidden_def (pwritev)
#endif
--- /dev/null
+/* Linux implementation of pwritev2.
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <sys/uio.h>
+#include <sysdep-cancel.h>
+
+#ifndef __OFF_T_MATCHES_OFF64_T
+
+ssize_t
+pwritev2 (int fd, const struct iovec *vector, int count, off_t offset,
+ int flags)
+{
+# ifdef __NR_pwritev2
+ ssize_t result = SYSCALL_CANCEL (pwritev2, fd, vector, count,
+ LO_HI_LONG (offset), flags);
+ if (result >= 0 || errno != ENOSYS)
+ return result;
+# endif
+ /* Trying to emulate the pwritev2 syscall flags is troublesome:
+
+ * We can not temporary change the file state of the O_DSYNC and O_SYNC
+ flags to emulate RWF_{D}SYNC (attempts to change the state of using
+ fcntl are silently ignored).
+
+ * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
+ semantic not provided by any other flag (O_NONBLOCK for instance). */
+
+ if (flags != 0)
+ {
+ __set_errno (EOPNOTSUPP);
+ return -1;
+ }
+ return pwritev (fd, vector, count, offset);
+}
+
+#endif
# define OFF_T off64_t
# include <sysdeps/posix/pwritev_common.c>
#endif
+libc_hidden_def (pwritev64)
#ifdef __OFF_T_MATCHES_OFF64_T
strong_alias (pwritev64, pwritev)
+libc_hidden_def (pwritev)
#endif
--- /dev/null
+/* Linux implementation of pwritev2 (LFS version).
+ Copyright (C) 2017 Free Software Foundation, Inc.
+ 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/>. */
+
+#include <sys/uio.h>
+#include <sysdep-cancel.h>
+
+#if !defined(__NR_pwritev64v2) && defined(__NR_pwritev2)
+# define __NR_pwritev64v2 __NR_pwritev2
+#endif
+
+ssize_t
+pwritev64v2 (int fd, const struct iovec *vector, int count, off64_t offset,
+ int flags)
+{
+#ifdef __NR_pwritev64v2
+ ssize_t result = SYSCALL_CANCEL (pwritev64v2, fd, vector, count,
+ LO_HI_LONG (offset), flags);
+ if (result >= 0 || errno != ENOSYS)
+ return result;
+#endif
+ /* Trying to emulate the pwritev2 syscall flags is troublesome:
+
+ * We can not temporary change the file state of the O_DSYNC and O_SYNC
+ flags to emulate RWF_{D}SYNC (attempts to change the state of using
+ fcntl are silently ignored).
+
+ * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
+ semantic not provided by any other flag (O_NONBLOCK for instance). */
+
+ if (flags != 0)
+ {
+ __set_errno (EOPNOTSUPP);
+ return -1;
+ }
+ return pwritev64 (fd, vector, count, offset);
+}
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+strong_alias (pwritev64v2, pwritev2)
+#endif
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
GLIBC_2.3 GLIBC_2.3 A
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.25 strfromf F
GLIBC_2.25 strfroml F
GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
GLIBC_2.26 reallocarray F
projects / platform / upstream / glibc.git / commitdiff