forked from
oppi.li/pdsfs
mount an atproto PDS repository as a FUSE filesystem
add tid
authored by
Dan Abramov
and committed by
Tangled
0d69ffdf
1e5a2823
+30
-5
+30
-5
src/fs.rs
+30
-5
src/fs.rs
···
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use std::time;
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use std::time::{self, SystemTime, UNIX_EPOCH, Duration};
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use atrium_repo::{Repository, blockstore::AsyncBlockStoreRead};
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use futures::StreamExt;
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use indexmap::{IndexMap, IndexSet};
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type Inode = usize;
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/// Decode a TID (timestamp identifier) to get the timestamp in microseconds since Unix epoch
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fn tid_to_timestamp(tid: &str) -> Option<SystemTime> {
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const S32_CHAR: &[u8] = b"234567abcdefghijklmnopqrstuvwxyz";
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if tid.len() != 13 {
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return None;
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}
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let mut value: u64 = 0;
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for ch in tid.chars() {
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let pos = S32_CHAR.iter().position(|&c| c as char == ch)?;
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// Big-endian: first character is most significant
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value = (value << 5) | (pos as u64);
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}
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// Extract timestamp from upper bits (shifted by 10)
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let micros = value >> 10;
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UNIX_EPOCH.checked_add(Duration::from_micros(micros))
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}
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pub struct PdsFs<R> {
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repos: IndexMap<String, Repository<R>>,
···
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.map_or(0, |v| serde_json::to_string(&v).unwrap().len())
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as u64;
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let blocks = ((size as u32 + BLKSIZE - 1) / BLKSIZE) as u64;
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// Decode TID to get creation timestamp
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let timestamp = tid_to_timestamp(&r.rkey).unwrap_or(time::UNIX_EPOCH);
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fuser::FileAttr {
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ino,
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size,
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blocks,
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atime: time::UNIX_EPOCH,
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mtime: time::UNIX_EPOCH,
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ctime: time::UNIX_EPOCH,
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crtime: time::UNIX_EPOCH,
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atime: timestamp,
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mtime: timestamp,
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ctime: timestamp,
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crtime: timestamp,
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kind: fuser::FileType::RegularFile,
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perm: 0o644,
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nlink: 1,