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| author | Stafford Horne <shorne@gmail.com> | 2024-04-03 06:40:37 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2024-05-29 13:51:32 +0200 |
| commit | 70f560fc22212f733647c9121c26bbb2307f2e10 (patch) | |
| tree | 290ee15363bfe288d0f74cba0ffd78e8f302f930 | |
| parent | c9d8534406ab69b9bc1fd3fdfb9e88c9580d3f24 (diff) | |
| download | glibc-70f560fc22212f733647c9121c26bbb2307f2e10.zip glibc-70f560fc22212f733647c9121c26bbb2307f2e10.tar.gz glibc-70f560fc22212f733647c9121c26bbb2307f2e10.tar.bz2 | |
misc: Add support for Linux uio.h RWF_NOAPPEND flag
In Linux 6.9 a new flag is added to allow for Per-io operations to
disable append mode even if a file was opened with the flag O_APPEND.
This is done with the new RWF_NOAPPEND flag.
This caused two test failures as these tests expected the flag 0x00000020
to be unused. Adding the flag definition now fixes these tests on Linux
6.9 (v6.9-rc1).
FAIL: misc/tst-preadvwritev2
FAIL: misc/tst-preadvwritev64v2
This patch adds the flag, adjusts the test and adds details to
documentation.
Link: https://lore.kernel.org/all/20200831153207.GO3265@brightrain.aerifal.cx/
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
(cherry picked from commit 3db9d208dd5f30b12900989c6d2214782b8e2011)
| -rw-r--r-- | manual/llio.texi | 4 | ||||
| -rw-r--r-- | misc/tst-preadvwritev2-common.c | 5 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/uio-ext.h | 1 |
3 files changed, 9 insertions, 1 deletions
diff --git a/manual/llio.texi b/manual/llio.texi index 0b61d49..fae49d1 100644 --- a/manual/llio.texi +++ b/manual/llio.texi @@ -1339,6 +1339,10 @@ will fail and set @code{errno} to @code{EAGAIN} if the operation would block. @item RWF_APPEND Per-IO synchronization as if the file was opened with @code{O_APPEND} flag. + +@item RWF_NOAPPEND +This flag allows an offset to be honored, even if the file was opened with +@code{O_APPEND} flag. @end vtable When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} the diff --git a/misc/tst-preadvwritev2-common.c b/misc/tst-preadvwritev2-common.c index b5f19f0..8e04ff7 100644 --- a/misc/tst-preadvwritev2-common.c +++ b/misc/tst-preadvwritev2-common.c @@ -34,8 +34,11 @@ #ifndef RWF_APPEND # define RWF_APPEND 0 #endif +#ifndef RWF_NOAPPEND +# define RWF_NOAPPEND 0 +#endif #define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT \ - | RWF_APPEND) + | RWF_APPEND | RWF_NOAPPEND) /* Generic uio_lim.h does not define IOV_MAX. */ #ifndef IOV_MAX diff --git a/sysdeps/unix/sysv/linux/bits/uio-ext.h b/sysdeps/unix/sysv/linux/bits/uio-ext.h index 7854ccc..ead7a09 100644 --- a/sysdeps/unix/sysv/linux/bits/uio-ext.h +++ b/sysdeps/unix/sysv/linux/bits/uio-ext.h @@ -47,6 +47,7 @@ extern ssize_t process_vm_writev (pid_t __pid, const struct iovec *__lvec, #define RWF_SYNC 0x00000004 /* per-IO O_SYNC. */ #define RWF_NOWAIT 0x00000008 /* per-IO nonblocking mode. */ #define RWF_APPEND 0x00000010 /* per-IO O_APPEND. */ +#define RWF_NOAPPEND 0x00000020 /* per-IO negation of O_APPEND */ __END_DECLS |