diff options
Diffstat (limited to 'source3/smbd/files.c')
| -rw-r--r-- | source3/smbd/files.c | 24 |
1 files changed, 24 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) |