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author | Steve French <stfrench@microsoft.com> | 2020-02-06 13:00:14 +0100 |
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committer | Steve French <stfrench@microsoft.com> | 2020-02-06 16:14:28 +0100 |
commit | d26c2ddd33569667e3eeb577c4c1d966ca9192e2 (patch) | |
tree | 2b6285e86f3d90cf6f49fba3c160f76faf5d70d7 /init/main.c | |
parent | cifs: make multichannel warning more visible (diff) | |
download | linux-d26c2ddd33569667e3eeb577c4c1d966ca9192e2.tar.xz linux-d26c2ddd33569667e3eeb577c4c1d966ca9192e2.zip |
cifs: add SMB3 change notification support
A commonly used SMB3 feature is change notification, allowing an
app to be notified about changes to a directory. The SMB3
Notify request blocks until the server detects a change to that
directory or its contents that matches the completion flags
that were passed in and the "watch_tree" flag (which indicates
whether subdirectories under this directory should be also
included). See MS-SMB2 2.2.35 for additional detail.
To use this simply pass in the following structure to ioctl:
struct __attribute__((__packed__)) smb3_notify {
uint32_t completion_filter;
bool watch_tree;
} __packed;
using CIFS_IOC_NOTIFY 0x4005cf09
or equivalently _IOW(CIFS_IOCTL_MAGIC, 9, struct smb3_notify)
SMB3 change notification is supported by all major servers.
The ioctl will block until the server detects a change to that
directory or its subdirectories (if watch_tree is set).
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Acked-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Diffstat (limited to 'init/main.c')
0 files changed, 0 insertions, 0 deletions