[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