diff --git a/ChangeLog b/ChangeLog index 1dc6d5c8e3..c0d9d6d212 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,96 @@ +2017-05-31 Adhemerval Zanella + + * 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 * nptl/tst-fork3.c: Include . diff --git a/NEWS b/NEWS index f92392a3f8..256d8f0e3f 100644 --- a/NEWS +++ b/NEWS @@ -70,6 +70,13 @@ Version 2.26 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, diff --git a/include/sys/uio.h b/include/sys/uio.h index f44ce182ba..20860bfd82 100644 --- a/include/sys/uio.h +++ b/include/sys/uio.h @@ -7,5 +7,11 @@ extern ssize_t __readv (int __fd, const struct iovec *__iovec, 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 diff --git a/manual/llio.texi b/manual/llio.texi index 9fad8f4d6b..8d18509d45 100644 --- a/manual/llio.texi +++ b/manual/llio.texi @@ -764,6 +764,115 @@ When the source file is compiled using @code{_FILE_OFFSET_BITS == 64} on a @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 diff --git a/misc/Makefile b/misc/Makefile index 2db1fd8397..c393fa7cf2 100644 --- a/misc/Makefile +++ b/misc/Makefile @@ -39,6 +39,7 @@ headers := sys/uio.h bits/uio.h sys/ioctl.h bits/ioctls.h bits/ioctl-types.h \ routines := brk sbrk sstk ioctl \ readv writev preadv preadv64 pwritev pwritev64 \ + preadv2 preadv64v2 pwritev2 pwritev64v2 \ setreuid setregid \ seteuid setegid \ getpagesize \ @@ -79,7 +80,8 @@ gpl2lgpl := error.c error.h 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 diff --git a/misc/Versions b/misc/Versions index f2c90fffda..bafda78a1f 100644 --- a/misc/Versions +++ b/misc/Versions @@ -155,6 +155,9 @@ libc { GLIBC_2.25 { gnu_dev_major; gnu_dev_minor; gnu_dev_makedev; } + GLIBC_2.26 { + preadv2; preadv64v2; pwritev2; pwritev64v2; + } GLIBC_PRIVATE { __madvise; __mktemp; diff --git a/misc/preadv2.c b/misc/preadv2.c new file mode 100644 index 0000000000..a62dcaa699 --- /dev/null +++ b/misc/preadv2.c @@ -0,0 +1,30 @@ +/* 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 + . */ + +#include + +/* 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) diff --git a/misc/preadv64v2.c b/misc/preadv64v2.c new file mode 100644 index 0000000000..a802c2f1ab --- /dev/null +++ b/misc/preadv64v2.c @@ -0,0 +1,30 @@ +/* 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 + . */ + +#include + +/* 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) diff --git a/misc/pwritev2.c b/misc/pwritev2.c new file mode 100644 index 0000000000..b9e07272da --- /dev/null +++ b/misc/pwritev2.c @@ -0,0 +1,30 @@ +/* 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 + . */ + +#include + +/* 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) diff --git a/misc/pwritev64v2.c b/misc/pwritev64v2.c new file mode 100644 index 0000000000..1f874f054c --- /dev/null +++ b/misc/pwritev64v2.c @@ -0,0 +1,30 @@ +/* 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 + . */ + +#include + +/* 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) diff --git a/misc/sys/uio.h b/misc/sys/uio.h index e80f0136c9..66c22f04f6 100644 --- a/misc/sys/uio.h +++ b/misc/sys/uio.h @@ -76,6 +76,7 @@ extern ssize_t preadv (int __fd, const struct iovec *__iovec, int __count, __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, @@ -117,6 +118,46 @@ extern ssize_t pwritev64 (int __fd, const struct iovec *__iovec, int __count, # 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 */ diff --git a/misc/tst-preadvwritev-common.c b/misc/tst-preadvwritev-common.c index 5540dfb04d..676d4953ac 100644 --- a/misc/tst-preadvwritev-common.c +++ b/misc/tst-preadvwritev-common.c @@ -18,6 +18,7 @@ #include #include +#include #include #include #include @@ -39,6 +40,16 @@ do_prepare (int argc, char **argv) } #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) { @@ -58,13 +69,13 @@ 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)) @@ -82,7 +93,7 @@ do_test_with_offset (off_t offset) 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)) @@ -93,7 +104,7 @@ do_test_with_offset (off_t offset) 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)) diff --git a/misc/tst-preadvwritev2.c b/misc/tst-preadvwritev2.c new file mode 100644 index 0000000000..cf36272dd3 --- /dev/null +++ b/misc/tst-preadvwritev2.c @@ -0,0 +1,31 @@ +/* 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 + . */ + +#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); +} diff --git a/misc/tst-preadvwritev64v2.c b/misc/tst-preadvwritev64v2.c new file mode 100644 index 0000000000..8d0c48ea78 --- /dev/null +++ b/misc/tst-preadvwritev64v2.c @@ -0,0 +1,33 @@ +/* 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 + . */ + +#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); +} diff --git a/nptl/tst-cancel4.c b/nptl/tst-cancel4.c index e66961f9a8..7a560a1dda 100644 --- a/nptl/tst-cancel4.c +++ b/nptl/tst-cancel4.c @@ -1078,6 +1078,75 @@ tf_pwritev (void *arg) FAIL_EXIT1 ("pwritev returns with %zd", s); } +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) { @@ -1473,7 +1542,9 @@ struct cancel_tests tests[] = 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), diff --git a/sysdeps/posix/preadv2.c b/sysdeps/posix/preadv2.c new file mode 100644 index 0000000000..2a7cf11e27 --- /dev/null +++ b/sysdeps/posix/preadv2.c @@ -0,0 +1,38 @@ +/* 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 + . */ + +#include +#include + +#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 diff --git a/sysdeps/posix/preadv64v2.c b/sysdeps/posix/preadv64v2.c new file mode 100644 index 0000000000..e084f3f9e1 --- /dev/null +++ b/sysdeps/posix/preadv64v2.c @@ -0,0 +1,37 @@ +/* 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 + . */ + +#include +#include + +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 diff --git a/sysdeps/posix/pwritev2.c b/sysdeps/posix/pwritev2.c new file mode 100644 index 0000000000..5b7650c4fc --- /dev/null +++ b/sysdeps/posix/pwritev2.c @@ -0,0 +1,38 @@ +/* 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 + . */ + +#include +#include + +#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 diff --git a/sysdeps/posix/pwritev64v2.c b/sysdeps/posix/pwritev64v2.c new file mode 100644 index 0000000000..0f2f9ef863 --- /dev/null +++ b/sysdeps/posix/pwritev64v2.c @@ -0,0 +1,38 @@ +/* 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 + . */ + +#include +#include + +/* 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 diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist index a494c3947d..81e4fe9d9c 100644 --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist @@ -2098,4 +2098,8 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist index 2fc1a9bae7..fab73317ca 100644 --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist @@ -2009,6 +2009,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist index 4465a62ff1..d2a206a8df 100644 --- a/sysdeps/unix/sysv/linux/arm/libc.abilist +++ b/sysdeps/unix/sysv/linux/arm/libc.abilist @@ -99,6 +99,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/bits/uio.h b/sysdeps/unix/sysv/linux/bits/uio.h index 1583f0455b..d5701f8171 100644 --- a/sysdeps/unix/sysv/linux/bits/uio.h +++ b/sysdeps/unix/sysv/linux/bits/uio.h @@ -69,4 +69,10 @@ extern ssize_t process_vm_writev (pid_t __pid, const struct iovec *__lvec, __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 diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist index 96126d9e6a..24bb7300d3 100644 --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist @@ -1863,6 +1863,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist index aae351bbff..2ff1998ac9 100644 --- a/sysdeps/unix/sysv/linux/i386/libc.abilist +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist @@ -2021,6 +2021,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist index 81ec65bec0..39ccf2b5ee 100644 --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist @@ -1885,6 +1885,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h index 8961e4dd78..9495db4fef 100644 --- a/sysdeps/unix/sysv/linux/kernel-features.h +++ b/sysdeps/unix/sysv/linux/kernel-features.h @@ -97,3 +97,8 @@ /* 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. */ diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist index 9db205b68e..b594ebd7c6 100644 --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist @@ -100,6 +100,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist index ee59e950b6..a36739d41c 100644 --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist @@ -1977,6 +1977,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/microblaze/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/libc.abilist index feb869757c..16aa25485f 100644 --- a/sysdeps/unix/sysv/linux/microblaze/libc.abilist +++ b/sysdeps/unix/sysv/linux/microblaze/libc.abilist @@ -2098,4 +2098,8 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist index a5b1c42929..907ab331f2 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist @@ -1952,6 +1952,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist index 570a859aac..36ee235d71 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist @@ -1950,6 +1950,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist index 71008ad873..783aa73ab7 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist @@ -1948,6 +1948,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist index 1a07d66caf..e1275dfe28 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist @@ -1943,6 +1943,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist index a62a41be62..be252287d1 100644 --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist @@ -2139,4 +2139,8 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist index f4f11dc625..e213895c71 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist @@ -1981,6 +1981,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist index 2977569f2c..d25aefd1ae 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist @@ -1986,6 +1986,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist index 271d32e19b..443d89f663 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist @@ -2186,4 +2186,8 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist index 372ef67c27..5eb056baf5 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist @@ -100,6 +100,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/preadv.c b/sysdeps/unix/sysv/linux/preadv.c index 7d971cc7b3..ecabc8c9c6 100644 --- a/sysdeps/unix/sysv/linux/preadv.c +++ b/sysdeps/unix/sysv/linux/preadv.c @@ -50,4 +50,6 @@ preadv (int fd, const struct iovec *vector, int count, off_t offset) # define OFF_T off_t # include # endif /* __ASSUME_PREADV */ + +libc_hidden_def (preadv) #endif diff --git a/sysdeps/unix/sysv/linux/preadv2.c b/sysdeps/unix/sysv/linux/preadv2.c new file mode 100644 index 0000000000..11fe85eaa8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/preadv2.c @@ -0,0 +1,55 @@ +/* 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 + . */ + +#include +#include + +#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 diff --git a/sysdeps/unix/sysv/linux/preadv64.c b/sysdeps/unix/sysv/linux/preadv64.c index 66daa74ded..c96b2142e3 100644 --- a/sysdeps/unix/sysv/linux/preadv64.c +++ b/sysdeps/unix/sysv/linux/preadv64.c @@ -48,7 +48,9 @@ preadv64 (int fd, const struct iovec *vector, int count, off64_t offset) # define OFF_T off64_t # include #endif +libc_hidden_def (preadv64) #ifdef __OFF_T_MATCHES_OFF64_T strong_alias (preadv64, preadv) +libc_hidden_def (preadv) #endif diff --git a/sysdeps/unix/sysv/linux/preadv64v2.c b/sysdeps/unix/sysv/linux/preadv64v2.c new file mode 100644 index 0000000000..9d7f8c9893 --- /dev/null +++ b/sysdeps/unix/sysv/linux/preadv64v2.c @@ -0,0 +1,55 @@ +/* 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 + . */ + +#include +#include + +#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 diff --git a/sysdeps/unix/sysv/linux/pwrite64.c b/sysdeps/unix/sysv/linux/pwrite64.c index 57e5d20328..71959c0de2 100644 --- a/sysdeps/unix/sysv/linux/pwrite64.c +++ b/sysdeps/unix/sysv/linux/pwrite64.c @@ -28,6 +28,7 @@ __libc_pwrite64 (int fd, const void *buf, size_t count, off64_t offset) { 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) diff --git a/sysdeps/unix/sysv/linux/pwritev.c b/sysdeps/unix/sysv/linux/pwritev.c index ce02996a0b..7545cb3e1e 100644 --- a/sysdeps/unix/sysv/linux/pwritev.c +++ b/sysdeps/unix/sysv/linux/pwritev.c @@ -50,4 +50,6 @@ pwritev (int fd, const struct iovec *vector, int count, off_t offset) # define OFF_T off_t # include # endif /* __ASSUME_PREADV */ + +libc_hidden_def (pwritev) #endif diff --git a/sysdeps/unix/sysv/linux/pwritev2.c b/sysdeps/unix/sysv/linux/pwritev2.c new file mode 100644 index 0000000000..72f0471f96 --- /dev/null +++ b/sysdeps/unix/sysv/linux/pwritev2.c @@ -0,0 +1,51 @@ +/* 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 + . */ + +#include +#include + +#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 diff --git a/sysdeps/unix/sysv/linux/pwritev64.c b/sysdeps/unix/sysv/linux/pwritev64.c index 45fb90b0d7..9dc4e55f96 100644 --- a/sysdeps/unix/sysv/linux/pwritev64.c +++ b/sysdeps/unix/sysv/linux/pwritev64.c @@ -48,7 +48,9 @@ pwritev64 (int fd, const struct iovec *vector, int count, off64_t offset) # define OFF_T off64_t # include #endif +libc_hidden_def (pwritev64) #ifdef __OFF_T_MATCHES_OFF64_T strong_alias (pwritev64, pwritev) +libc_hidden_def (pwritev) #endif diff --git a/sysdeps/unix/sysv/linux/pwritev64v2.c b/sysdeps/unix/sysv/linux/pwritev64v2.c new file mode 100644 index 0000000000..def9a0bc57 --- /dev/null +++ b/sysdeps/unix/sysv/linux/pwritev64v2.c @@ -0,0 +1,55 @@ +/* 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 + . */ + +#include +#include + +#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 diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist index 705ff851a9..63d33e8b37 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist @@ -1981,6 +1981,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist index 21fd2b5671..b1b2b29c94 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist @@ -1882,6 +1882,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/sh/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist index 313a71e589..f3a70a0f6f 100644 --- a/sysdeps/unix/sysv/linux/sh/libc.abilist +++ b/sysdeps/unix/sysv/linux/sh/libc.abilist @@ -1867,6 +1867,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist index 94a4fb2213..8c4c2e502c 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist @@ -1973,6 +1973,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist index 6db5811c3f..1653164d9e 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist @@ -1911,6 +1911,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist index 5d83926aac..41647d4610 100644 --- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist +++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist @@ -2105,4 +2105,8 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist index ce14ceb15f..1088923e59 100644 --- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist +++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist @@ -2105,4 +2105,8 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist index 5d83926aac..41647d4610 100644 --- a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist +++ b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist @@ -2105,4 +2105,8 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist index f69de7aa83..513524d932 100644 --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist @@ -1862,6 +1862,10 @@ GLIBC_2.25 strfromd 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 diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist index a330855308..0c557e9f43 100644 --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist @@ -2105,4 +2105,8 @@ GLIBC_2.25 strfromd 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