On 07/07/2011 08:17 AM, Daniel P. Berrange wrote:
From: "Daniel P. Berrange" <berrange@redhat.com>
Add some simple wrappers around the fcntl() discretionary file locking capability.
* src/util/util.c, src/util/util.h, src/libvirt_private.syms: Add virFileLock and virFileUnlock APIs --- src/libvirt_private.syms | 2 ++ src/util/util.c | 33 +++++++++++++++++++++++++++++++++ src/util/util.h | 3 +++ 3 files changed, 38 insertions(+), 0 deletions(-)
+ +int virFileLock(int fd, bool shared, off_t start, off_t len) +{ + struct flock fl = { + .l_type = shared ? F_RDLCK : F_WRLCK, + .l_whence = SEEK_SET, + .l_start = start, + .l_len = len, + };
This won't compile on mingw. We need to either make a no-op stub, or figure out how to do rudimentary file locking on mingw, or get gnulib to figure it out (probably the first option is easiest for now). -- Eric Blake eblake@redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org