diff options
| -rw-r--r-- | source3/smbd/files.c | 24 | ||||
| -rw-r--r-- | source3/smbd/proto.h | 1 |
2 files changed, 25 insertions, 0 deletions
diff --git a/source3/smbd/files.c b/source3/smbd/files.c index 0018ceed5e5..1031ccfecba 100644 --- a/source3/smbd/files.c +++ b/source3/smbd/files.c @@ -566,6 +566,30 @@ files_struct *file_fsp(struct smb_request *req, uint16 fid) return fsp; } +uint64_t fsp_persistent_id(const struct files_struct *fsp) +{ + uint64_t persistent_id; + + /* + * This calculates a number that is most likely + * globally unique. In future we will have a database + * to make it completely unique. + * + * 32-bit random gen_id + * 16-bit truncated open_time + * 16-bit fnum (valatile_id) + */ + persistent_id = fsp->fh->gen_id & UINT32_MAX; + persistent_id <<= 16; + persistent_id &= 0x0000FFFFFFFF0000LLU; + persistent_id |= fsp->open_time.tv_usec & UINT16_MAX; + persistent_id <<= 16; + persistent_id &= 0xFFFFFFFFFFFF0000LLU; + persistent_id |= fsp->fnum & UINT16_MAX; + + return persistent_id; +} + struct files_struct *file_fsp_smb2(struct smbd_smb2_request *smb2req, uint64_t persistent_id, uint64_t volatile_id) diff --git a/source3/smbd/proto.h b/source3/smbd/proto.h index 929387b2193..d75138b117b 100644 --- a/source3/smbd/proto.h +++ b/source3/smbd/proto.h @@ -373,6 +373,7 @@ bool file_find_subpath(files_struct *dir_fsp); void file_sync_all(connection_struct *conn); void file_free(struct smb_request *req, files_struct *fsp); files_struct *file_fsp(struct smb_request *req, uint16 fid); +uint64_t fsp_persistent_id(const struct files_struct *fsp); struct files_struct *file_fsp_smb2(struct smbd_smb2_request *smb2req, uint64_t persistent_id, uint64_t volatile_id); |