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| author | Bernd Schubert <bschubert@ddn.com> | 2024-07-30 01:13:27 +0200 |
|---|---|---|
| committer | Bernd Schubert <bernd.schubert@fastmail.fm> | 2024-07-30 10:53:16 +0200 |
| commit | a83041fa1fa40c4cdeeaecb2b16b011d629727c8 (patch) | |
| tree | c1de52c593050a859c92bfa44e760d334d2667ed /example/passthrough_hp.cc | |
| parent | fafe4069d028b99ae937ee75ea2b82bf215392c3 (diff) | |
| download | libfuse-a83041fa1fa40c4cdeeaecb2b16b011d629727c8.tar.gz | |
example/passthrough_hp: Fix . and .. readdir lookup count
Commit 170edc6a8ef0 added dot and dotdot (. and ..) to readdir
results, but introduced an issue when max number of entries
was reached - lookup count must not be decreased without
doing the lookup.
With ext4 as underlying file system readir seems to return . and ..
at random offsets and randomly failed xfstests for me.
This also fixes indentation, as passthrough_hp.cc does not follow
the linux indentation style (if we decide to fix this, it needs
to be done for the entire file).
Signed-off-by: Bernd Schubert <bschubert@ddn.com>
Diffstat (limited to 'example/passthrough_hp.cc')
| -rw-r--r-- | example/passthrough_hp.cc | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/example/passthrough_hp.cc b/example/passthrough_hp.cc index 708a38e..eb225b5 100644 --- a/example/passthrough_hp.cc +++ b/example/passthrough_hp.cc @@ -735,6 +735,7 @@ static void do_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, } while (1) { + bool did_lookup = false; struct dirent *entry; errno = 0; entry = readdir(d->dp); @@ -753,14 +754,15 @@ static void do_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, size_t entsize; if (plus) { if (is_dot_or_dotdot(entry->d_name)) { - /* fuse kernel ignores attributes for these and also does - * not increase lookup count (see fuse_direntplus_link) */ - e.attr.st_ino = entry->d_ino; - e.attr.st_mode = entry->d_type << 12; + /* fuse kernel ignores attributes for these and also does + * not increase lookup count (see fuse_direntplus_link) */ + e.attr.st_ino = entry->d_ino; + e.attr.st_mode = entry->d_type << 12; } else { err = do_lookup(ino, entry->d_name, &e); if (err) goto error; + did_lookup = true; } entsize = fuse_add_direntry_plus(req, p, rem, entry->d_name, &e, entry->d_off); } else { @@ -772,7 +774,7 @@ static void do_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, if (entsize > rem) { if (fs.debug) cerr << "DEBUG: readdir(): buffer full, returning data. " << endl; - if (plus) + if (did_lookup) forget_one(e.ino, 1); break; } |