added a file system call preallocate() as described in #6285, currently unused

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39006 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/drivers/fs_interface.h

@@ -167,6 +167,8 @@ struct fs_vnode_ops {
 				struct stat* stat);
 	status_t (*write_stat)(fs_volume* volume, fs_vnode* vnode,
 				const struct stat* stat, uint32 statMask);
+	status_t (*preallocate)(fs_volume* volume, fs_vnode* vnode,
+				off_t pos, off_t length);
 
 	/* file operations */
 	status_t (*create)(fs_volume* volume, fs_vnode* dir, const char* name,

headers/private/fs_shell/fssh_fs_interface.h

@@ -185,6 +185,8 @@ struct fssh_fs_vnode_ops {
 				struct fssh_stat *stat);
 	fssh_status_t (*write_stat)(fssh_fs_volume *volume, fssh_fs_vnode *vnode,
 				const struct fssh_stat *stat, uint32_t statMask);
+	fssh_status_t (*preallocate)(fssh_fs_volume* volume, fssh_fs_vnode* vnode,
+				fssh_off_t pos, fssh_off_t length);
 
 	/* file operations */
 	fssh_status_t (*create)(fssh_fs_volume *volume, fssh_fs_vnode *dir,

src/add-ons/kernel/file_systems/bfs/kernel_interface.cpp

@@ -2354,6 +2354,7 @@ fs_vnode_ops gBFSVnodeOps = {
 	&bfs_access,
 	&bfs_read_stat,
 	&bfs_write_stat,
+	NULL,	// fs_preallocate
 
 	/* file operations */
 	&bfs_create,

src/add-ons/kernel/file_systems/cdda/kernel_interface.cpp

@@ -2201,6 +2201,7 @@ fs_vnode_ops gCDDAVnodeOps = {
 	NULL,	// fs_access()
 	cdda_read_stat,
 	NULL,	// fs_write_stat()
+	NULL,	// fs_preallocate()
 
 	// file
 	NULL,	// fs_create()

src/add-ons/kernel/file_systems/ext2/kernel_interface.cpp

@@ -1648,6 +1648,7 @@ fs_vnode_ops gExt2VnodeOps = {
 	&ext2_access,
 	&ext2_read_stat,
 	&ext2_write_stat,
+	NULL,	// fs_preallocate
 
 	/* file operations */
 	&ext2_create,

src/add-ons/kernel/file_systems/fat/dosfs.c

@@ -1351,6 +1351,7 @@ fs_vnode_ops gFATVnodeOps = {
 	&dosfs_access,
 	&dosfs_rstat,
 	&dosfs_wstat,
+	NULL,	// &fs_preallocate,
 
 	/* file operations */
 	&dosfs_create,

src/add-ons/kernel/file_systems/googlefs/googlefs.c

@@ -1627,6 +1627,7 @@ static fs_vnode_ops sGoogleFSVnodeOps = {
 	&googlefs_access,
 	&googlefs_rstat,
 	&googlefs_wstat,
+	NULL,	// fs_preallocate
 
 	/* file operations */
 	&googlefs_create,

src/add-ons/kernel/file_systems/iso9660/kernel_interface.cpp

@@ -733,6 +733,7 @@ fs_vnode_ops gISO9660VnodeOps = {
 	&fs_access,
 	&fs_read_stat,
 	NULL,
+	NULL,
 
 	/* file */
 	NULL,

src/add-ons/kernel/file_systems/layers/attribute_overlay/attribute_overlay.cpp

@@ -1679,6 +1679,7 @@ static fs_vnode_ops sOverlayVnodeOps = {
 	&overlay_access,
 	&overlay_read_stat,
 	&overlay_write_stat,
+	NULL,	// fs_preallocate
 
 	/* file */
 	&overlay_create,

src/add-ons/kernel/file_systems/layers/log_overlay/log_overlay.cpp

@@ -715,6 +715,7 @@ static fs_vnode_ops sOverlayVnodeOps = {
 	&overlay_access,
 	&overlay_read_stat,
 	&overlay_write_stat,
+	NULL,	// fs_preallocate
 
 	/* file */
 	&overlay_create,

src/add-ons/kernel/file_systems/layers/write_overlay/write_overlay.cpp

@@ -2228,6 +2228,7 @@ static fs_vnode_ops sOverlayVnodeOps = {
 	&overlay_access,
 	&overlay_read_stat,
 	&overlay_write_stat,
+	NULL,	// fs_preallocate
 
 	/* file */
 	&overlay_create,

src/add-ons/kernel/file_systems/nfs/nfs_add_on.c

@@ -2505,6 +2505,7 @@ fs_vnode_ops sNFSVnodeOps = {
 	&fs_access,
 	&fs_rstat,
 	&fs_wstat,
+	NULL,	// fs_preallocate()
 
 	/* file operations */
 	&fs_create,

src/add-ons/kernel/file_systems/packagefs/kernel_interface.cpp

@@ -1122,6 +1122,7 @@ fs_vnode_ops gPackageFSVnodeOps = {
 	&packagefs_access,
 	&packagefs_read_stat,
 	NULL,	// write_stat,
+	NULL,	// preallocate,
 
 	// file operations
 	NULL,	// create,

src/add-ons/kernel/file_systems/ramfs/kernel_interface.cpp

@@ -2100,6 +2100,7 @@ static file_system_module_info sRamFSModuleInfo = {
 	&ramfs_access,
 	&ramfs_read_stat,
 	&ramfs_write_stat,
+	NULL,	// &ramfs_preallocate,
 
 	/* file operations */
 	&ramfs_create,

src/add-ons/kernel/file_systems/reiserfs/kernel_interface.cpp

@@ -783,6 +783,7 @@ fs_vnode_ops gReiserFSVnodeOps = {
 	&reiserfs_access,
 	&reiserfs_read_stat,
 	NULL,	// &reiserfs_write_stat,
+	NULL,	// &reiserfs_preallocate,
 
 	/* file operations */
 	NULL,	// &reiserfs_create,

src/add-ons/kernel/file_systems/udf/kernel_interface.cpp

@@ -671,6 +671,7 @@ fs_vnode_ops gUDFVnodeOps = {
 	&udf_access,
 	&udf_read_stat,
 	NULL,	// write_stat
+	NULL,	// preallocate
 
 	/* file operations */
 	NULL,	// create

src/add-ons/kernel/file_systems/userlandfs/kernel_add_on/kernel_interface.cpp

@@ -1209,6 +1209,7 @@ fs_vnode_ops gUserlandFSVnodeOps = {
 	&userlandfs_access,
 	&userlandfs_read_stat,
 	&userlandfs_write_stat,
+	NULL,	// preallocate()
 
 	// file operations
 	&userlandfs_create,