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[libvirt] [PATCH 04/10] fdstream: Add internal function to check if a fdstream is open



This patch adds a new internal api function to check if a fdstream is
open. The check is done as an trivial check of private data structures,
as if the stream is closed, those don't exist.
---
 src/fdstream.c           |    9 +++++++++
 src/fdstream.h           |    2 ++
 src/libvirt_private.syms |    1 +
 3 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/src/fdstream.c b/src/fdstream.c
index 8fb5e78..2e2f3af 100644
--- a/src/fdstream.c
+++ b/src/fdstream.c
@@ -674,3 +674,12 @@ int virFDStreamCreateFile(virStreamPtr st,
                                        offset, length,
                                        oflags | O_CREAT, mode);
 }
+
+/* internal function to check if stream is still open */
+int virFDStreamIsOpen(virStreamPtr st)
+{
+    if (!st || !st->privateData)
+        return 0;
+
+    return 1;
+}
diff --git a/src/fdstream.h b/src/fdstream.h
index f9edb23..dbea450 100644
--- a/src/fdstream.h
+++ b/src/fdstream.h
@@ -45,4 +45,6 @@ int virFDStreamCreateFile(virStreamPtr st,
                           int oflags,
                           mode_t mode);

+int virFDStreamIsOpen(virStreamPtr st);
+
 #endif /* __VIR_FDSTREAM_H_ */
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 11ff705..3fa042c 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -543,6 +543,7 @@ virFDStreamOpen;
 virFDStreamConnectUNIX;
 virFDStreamOpenFile;
 virFDStreamCreateFile;
+virFDStreamIsOpen;


 # hash.h
-- 
1.7.3.4


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