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| author | Alexander Bokovoy <ab@samba.org> | 2008-01-16 12:17:03 +0300 |
|---|---|---|
| committer | Alexander Bokovoy <ab@samba.org> | 2008-01-16 12:17:03 +0300 |
| commit | d86fc3ec8c99aaa5ffaa14a97525154507c39df7 (patch) | |
| tree | 7fb95cd9a112e345fc00a1f156ba01641863ce78 /source3/modules | |
| parent | 68694369fc96354452979b07425f3f48c4f73bbe (diff) | |
| download | samba-d86fc3ec8c99aaa5ffaa14a97525154507c39df7.tar.gz samba-d86fc3ec8c99aaa5ffaa14a97525154507c39df7.tar.bz2 samba-d86fc3ec8c99aaa5ffaa14a97525154507c39df7.zip | |
Add support for offline files support, remote storage, and Async I/O force operations to VFS
Offline files support and remote storage are for allowing communication with
backup and archiving tools that mark files moved to a tape library as offline.
We translate this info into corresponding CIFS offline file attribute and
mark an exported volume as remote storage.
Async I/O force is to allow selective redirection of I/O operations to asynchronous
processing in case it is viable at VFS module discretion. It is needed for
proper handling of offline files as performing regular I/O on offline file will
block smbd.
Signed-off-by: Alexander Bokovoy <ab@samba.org>(This used to be commit 875208724e39564fe81385dfe36e6c963e79e101)
Diffstat (limited to 'source3/modules')
| -rw-r--r-- | source3/modules/vfs_default.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/source3/modules/vfs_default.c b/source3/modules/vfs_default.c index e21136ccee..3e78c69a5e 100644 --- a/source3/modules/vfs_default.c +++ b/source3/modules/vfs_default.c @@ -1225,6 +1225,38 @@ static int vfswrap_aio_suspend(struct vfs_handle_struct *handle, struct files_st return sys_aio_suspend(aiocb, n, timeout); } +static int vfswrap_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp) +{ + return False; +} + +static int vfswrap_is_offline(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path, SMB_STRUCT_STAT *sbuf, bool *offline) +{ + if (ISDOT(path) || ISDOTDOT(path)) { + return 1; + } + + if (!lp_dmapi_support(SNUM(conn)) || !dmapi_have_session()) { + return -1; + } + + *offline = (dmapi_file_flags(path) & FILE_ATTRIBUTE_OFFLINE) != 0; + return 0; +} + +static int vfswrap_set_offline(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path) +{ + /* We don't know how to set offline bit by default, needs to be overriden in the vfs modules */ + return -1; +} + +static bool vfswrap_is_remotestorage(struct vfs_handle_struct *handle, struct connection_struct *conn, const char *path) +{ + /* We don't know how to detect that volume is remote storage. VFS modules should redefine it. */ + return False; +} + + static vfs_op_tuple vfs_default_ops[] = { /* Disk operations */ @@ -1442,6 +1474,16 @@ static vfs_op_tuple vfs_default_ops[] = { {SMB_VFS_OP(vfswrap_aio_suspend),SMB_VFS_OP_AIO_SUSPEND, SMB_VFS_LAYER_OPAQUE}, + {SMB_VFS_OP(vfswrap_aio_force), SMB_VFS_OP_AIO_FORCE, + SMB_VFS_LAYER_OPAQUE}, + + {SMB_VFS_OP(vfswrap_is_offline),SMB_VFS_OP_IS_OFFLINE, + SMB_VFS_LAYER_OPAQUE}, + {SMB_VFS_OP(vfswrap_set_offline),SMB_VFS_OP_SET_OFFLINE, + SMB_VFS_LAYER_OPAQUE}, + {SMB_VFS_OP(vfswrap_is_remotestorage),SMB_VFS_OP_IS_REMOTESTORAGE, + SMB_VFS_LAYER_OPAQUE}, + /* Finish VFS operations definition */ {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, |