diff options
Diffstat (limited to 'misc-Add-support-for-Linux-uio.h-RWF_NOAPPEND-flag.patch')
| -rw-r--r-- | misc-Add-support-for-Linux-uio.h-RWF_NOAPPEND-flag.patch | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/misc-Add-support-for-Linux-uio.h-RWF_NOAPPEND-flag.patch b/misc-Add-support-for-Linux-uio.h-RWF_NOAPPEND-flag.patch new file mode 100644 index 0000000..b1799c1 --- /dev/null +++ b/misc-Add-support-for-Linux-uio.h-RWF_NOAPPEND-flag.patch @@ -0,0 +1,75 @@ +From c8cb4d2b86ece572793e31a3422ea29e88d77df5 Mon Sep 17 00:00:00 2001 +From: Stafford Horne <shorne@gmail.com> +Date: Wed, 3 Apr 2024 06:40:37 +0100 +Subject: [PATCH 2/2] 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) +--- + manual/llio.texi | 4 ++++ + misc/tst-preadvwritev2-common.c | 5 ++++- + sysdeps/unix/sysv/linux/bits/uio-ext.h | 1 + + 3 files changed, 9 insertions(+), 1 deletion(-) + +diff --git a/manual/llio.texi b/manual/llio.texi +index 0b61d491f5..fae49d1433 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 355dbea05c..0d3729eac0 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 311f5b16ce..d641f57b01 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 + +-- +2.33.0 + |