s3:vfs_gpfs: Implement fallocate callback for GPFS

GPFS provides the gpfs_prealloc call. Implement the fallocate
callback with mode VFS_FALLOCATE_EXTEND_SIZE using this call.
There is no support for VFS_FALLOCATE_KEEP_SIZE, so report
this mode as not available.

1 files changed, 1 insertions, 0 deletions

diff --git a/source3/modules/vfs_gpfs.h b/source3/modules/vfs_gpfs.h
index 4a9528ae05..dfa4d4358f 100644
--- a/source3/modules/vfs_gpfs.h
+++ b/source3/modules/vfs_gpfs.h
@@ -33,6 +33,7 @@ int smbd_gpfs_get_realfilename_path(char *pathname, char *filenamep,
 int smbd_fget_gpfs_winattrs(int fd, struct gpfs_winattr *attrs);
 int get_gpfs_winattrs(char * pathname,struct gpfs_winattr *attrs);
 int set_gpfs_winattrs(char * pathname,int flags,struct gpfs_winattr *attrs);
+int smbd_gpfs_prealloc(int fd, gpfs_off64_t start, gpfs_off64_t bytes);
 int smbd_gpfs_ftruncate(int fd, gpfs_off64_t length);
 int get_gpfs_quota(const char *pathname, int type, int id,
 		   struct gpfs_quotaInfo *qi);