ksmbd: support empty snapshot enumeration

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FSCTL_SRV_ENUM_SNAPS is currently unimplemented, causing clients to
treat shadow-copy enumeration as unsupported even when the share simply
has no snapshots.

Handle the count-only SRV_SNAPSHOT_ARRAY request and return a valid
empty snapshot list after validating the file handle and minimum output
buffer size. Report a two-byte empty UTF-16 MULTI_SZ array and zero
snapshot counts.

This allows smb2.ioctl.shadow_copy to run without a snapshot backend.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

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This commit is contained in:

Namjae Jeon 2026-07-07 00:31:54 +09:00

parent d112661f95

commit d4ef8821fd

3 changed files with 32 additions and 0 deletions

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1

fs/smb/common/smbfsctl.h

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24

fs/smb/server/smb2pdu.c

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7

fs/smb/server/smb2pdu.h

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