Flags to print ACLs and file flags

[lilyball]

macOS's ls has -e to print ACLs and -O to print file flags (e.g. hidden). It would be great if exa could offer the same flags, at least on macOS.

[hguandl]

Hi, I have found out a snippet to print the file flags, which calls strtofflags(3). Here is the example:

use std::fs;
use std::os::macos::fs::MetadataExt;
use std::os::raw::c_char;

#[cfg(target_os = "macos")]
extern "C" {
    fn fflagstostr(flags: u32) -> *const c_char;
}

fn main() -> std::io::Result<()> {
    let attr = fs::metadata("/Users/hguandl/Library")?;

    let flag_str = unsafe {
        let c_buf = fflagstostr(attr.st_flags());
        CStr::from_ptr(c_buf)
    };

    println!("{}", flag_str.to_str().unwrap());

    Ok(())
}

$ cargo run
hidden

[lukasjuhrich]

Would it make sense to split off a separate feature request asking for a + indicator? Similarly to the t indicator for a sticky bit, ls adds a + in the case any acl's are present:

Example with acls

root@gutenberg ~ # ls -ld . 
drwx--x---+  13 root root 4096 Mar 12 18:36 .
root@gutenberg ~ # exa -ld .
drwx--x--- - root 12 Mar 18:36 .
root@gutenberg ~ # getfacl -psc .   
user::rwx
user:reprepro:--x
group::---
mask::--x
other::---

Example without acls

root@gutenberg ~ # ls -ld .config
drwx------ 5 root root 4096 Dec 30  2020 .config
root@gutenberg ~ # exa -ld .config
drwx------ - root 30 Dec  2020 .config
root@gutenberg ~ # getfacl -psc .config
root@gutenberg ~ #

Related: #142

[perobertson]

On Linux ls adds a . for files without an ACL and + when there is one. Instead of adding a new flag to be able to show them it could be added to the -l option to match what ls does.

-rw-r--r--. 1 root root 57 Aug 31 13:43 no-acl.txt
-rw-r--r--+ 1 root root 57 Sep 12 17:11 acl.txt

[vsczpv]

In the meantime, the -@ option used to show extended attributes already shows if a file has an ACL or not.

$ exa -l
.rw-r--r--@ 0 user 12 jul 15:28 acl.txt
.rw-r--r--  0 user 12 jul 15:28 no-acl.txt
$ exa -l -@
.rw-r--r--@ 0 user 12 jul 15:28 acl.txt
                                    └── system.posix_acl_access (len 44)
.rw-r--r--  0 user 12 jul 15:28 no-acl.txt

Though it would be nice to indicate ACLs with the plus sign, just as ls does.