Re: [PATCH v2 1/4] virfile: Add virFileGetLockOwner function

The function is used to retrieve the PID of the process holding an exclusive lock on the file. Signed-off-by: Vasiliy Ulyanov <vulyanov(a)suse.de&gt; --- src/libvirt_private.syms | 1 + src/util/virfile.c | 45 ++++++++++++++++++++++++++++++++++++++++ src/util/virfile.h | 2 ++ 3 files changed, 48 insertions(+) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 5b76e66e61..214f375a91 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -2224,6 +2224,7 @@ virFileFreeACLs; virFileGetACLs; virFileGetDefaultHugepage; virFileGetHugepageSize; +virFileGetLockOwner; virFileGetMountReverseSubtree; virFileGetMountSubtree; virFileGetXAttr; diff --git a/src/util/virfile.c b/src/util/virfile.c index d6faf7e3d2..b9149fb0d7 100644 --- a/src/util/virfile.c +++ b/src/util/virfile.c @@ -460,6 +460,43 @@ int virFileUnlock(int fd, off_t start, off_t len) } +/** + * virFileGetLockOwner: + * @fd: file descriptor to get the lock from + * @start: byte offset for the lock + * @len: length of the lock (0 to specify entire remaining file from @start) + * @pid: variable to return the PID of the process owning the lock + * + * Attempt to retrieve the PID of the process holding an exclusive lock + * on the file @fd.