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authorChristoph Hellwig <hch@lst.de>2018-05-02 20:51:00 +0300
committerChristoph Hellwig <hch@lst.de>2018-05-02 20:57:24 +0300
commit7a074e96dee62586c935c80cecd931431bfdd0be (patch)
treea1a29dad896070e82827d7447cfcc9a064e5a63d /include/uapi/linux/aio_abi.h
parenta3c0d439e4d92411c2b4b21a526a4de720d0806b (diff)
downloadlinux-7a074e96dee62586c935c80cecd931431bfdd0be.tar.xz
aio: implement io_pgetevents
This is the io_getevents equivalent of ppoll/pselect and allows to properly mix signals and aio completions (especially with IOCB_CMD_POLL) and atomically executes the following sequence: sigset_t origmask; pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ret = io_getevents(ctx, min_nr, nr, events, timeout); pthread_sigmask(SIG_SETMASK, &origmask, NULL); Note that unlike many other signal related calls we do not pass a sigmask size, as that would get us to 7 arguments, which aren't easily supported by the syscall infrastructure. It seems a lot less painful to just add a new syscall variant in the unlikely case we're going to increase the sigset size. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'include/uapi/linux/aio_abi.h')
-rw-r--r--include/uapi/linux/aio_abi.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/uapi/linux/aio_abi.h b/include/uapi/linux/aio_abi.h
index a04adbc70ddf..2c0a3415beee 100644
--- a/include/uapi/linux/aio_abi.h
+++ b/include/uapi/linux/aio_abi.h
@@ -29,6 +29,7 @@
#include <linux/types.h>
#include <linux/fs.h>
+#include <linux/signal.h>
#include <asm/byteorder.h>
typedef __kernel_ulong_t aio_context_t;
@@ -108,5 +109,10 @@ struct iocb {
#undef IFBIG
#undef IFLITTLE
+struct __aio_sigset {
+ sigset_t __user *sigmask;
+ size_t sigsetsize;
+};
+
#endif /* __LINUX__AIO_ABI_H */