[PATCH] aio.7: Improve example
From: Andreas Gruenbacher <hidden>
Date: 2016-02-01 09:46:58
Subsystem:
the rest · Maintainer:
Linus Torvalds
When aio_sigevent.sigev_notify is set to SIGEV_SIGNAL, signal handlers called for asychronous I/O operations will have si->si_code set to SI_ASYNCIO. Check to make sure that si->si_value.sival_ptr is defined. Signed-off-by: Andreas Gruenbacher <redacted> --- aio.7 | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/aio.7 b/aio.7
index 1f861da..21193fd 100644
--- a/aio.7
+++ b/aio.7@@ -281,12 +281,14 @@ quitHandler(int sig) static void /* Handler for I/O completion signal */ aioSigHandler(int sig, siginfo_t *si, void *ucontext) { - write(STDOUT_FILENO, "I/O completion signal received\\n", 31); + if (si->si_code == SI_ASYNCIO) { + write(STDOUT_FILENO, "I/O completion signal received\\n", 31); - /* The corresponding ioRequest structure would be available as - struct ioRequest *ioReq = si\->si_value.sival_ptr; - and the file descriptor would then be available via - ioReq\->aiocbp\->aio_fildes */ + /* The corresponding ioRequest structure would be available as + struct ioRequest *ioReq = si\->si_value.sival_ptr; + and the file descriptor would then be available via + ioReq\->aiocbp\->aio_fildes */ + } } int
--
2.5.0
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