metastore/src, branch perf-2

Check for directories with the mode stored in the mentry

2022-07-08T07:36:47+00:00

Saves one call to lstat(2) per file.

On my system, this improves `time bin/metastore -d /usr >/dev/null` from:

    real    0m2.183s
    user    0m0.733s
    sys     0m1.435s

to:

    real    0m1.846s
    user    0m0.663s
    sys     0m1.134s

Average of 5 runs, on a warm cache, reducing runtime by roughly 15%.

Return early if there are no xattrs

2022-07-08T07:36:43+00:00

Saves one malloc(3) and one listxattr(2) per file that has no xattrs.

On my system, this improves `time metastore -d /usr >/dev/null` from:

    real    0m2.347s
    user    0m0.732s
    sys     0m1.603s

to:

    real    0m2.183s
    user    0m0.733s
    sys     0m1.435s

Average of 5 runs, on a warm cache, reducing runtime by roughly 7%.

metastore.c: Do not skip nanoseconds when applying mtime.

2022-05-21T14:01:23+00:00

Apply mtime using utimensat() instead of utime(), which not only
supports setting nanoseconds, but also omitting atime change (last
access time), and working on symlinks - we use all of that.

Reported-by: Björn Haßler

Fix "changing owner" message to show owner instead of group.

2021-04-07T23:40:44+00:00

Fix path normalization for the case of CWD being the root directory (/).

2021-04-07T16:24:27+00:00

Previously metastore would fail if running from / and paths were given:

    $ pwd
    /
    $ metastore -d bin
    lstat failed for .bin: No such file or directory

Now it works properly:

    $ metastore -d bin | head -1
    lrwxrwxrwx      root    root    2018-08-17 16:31:23.120322532 +0200     ./bin/hostname

Signed-off-by: Przemyslaw Pawelczyk

Fix conversion specifiers in "Failed to {malloc,strdup}" messages.

2018-09-08T14:47:22+00:00

Add missing argument to "Failed to get metadata for %s\n" message.

2018-09-08T14:43:37+00:00

Support building with empty -DNO_XATTR= (equivalent to -DNO_XATTR=0).

2018-02-19T00:41:15+00:00

Support building with no extended attributes support.

2018-02-18T23:34:14+00:00

Support building with no extended attributes support when NO_XATTR
macro is predefined to non-0 value (e.g. put -DNO_XATTR in CFLAGS).

utils.h: Introduce new verbosity level: MSG_WARNING.

2018-02-18T21:51:17+00:00