lsofrs 4.8.0

Modern, high-performance lsof implementation in Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147

//! JSON output shape invariants for the self process (end-to-end).

use std::process::Command;

fn lsofrs() -> Command {
    Command::new(env!("CARGO_BIN_EXE_lsofrs"))
}

fn self_json_process() -> serde_json::Value {
    let my_pid = std::process::id().to_string();
    let out = lsofrs().args(["-J", "-p", &my_pid]).output().unwrap();
    assert!(
        out.status.success(),
        "stderr={}",
        String::from_utf8_lossy(&out.stderr)
    );
    let arr: Vec<serde_json::Value> =
        serde_json::from_str(&String::from_utf8_lossy(&out.stdout)).unwrap();
    assert_eq!(arr.len(), 1);
    arr.into_iter().next().unwrap()
}

#[test]
fn json_self_pid_command_is_string() {
    let p = self_json_process();
    assert!(p["command"].as_str().is_some());
}

#[test]
fn json_long_flag_self_pid_command_is_string() {
    let my_pid = std::process::id().to_string();
    let out = lsofrs().args(["--json", "-p", &my_pid]).output().unwrap();
    assert!(out.status.success());
    let v: Vec<serde_json::Value> = serde_json::from_slice(&out.stdout).unwrap();
    assert!(v[0]["command"].as_str().is_some());
}

#[test]
fn json_self_pid_matches_os_pid() {
    let p = self_json_process();
    assert_eq!(p["pid"].as_i64().unwrap(), std::process::id() as i64);
}

#[test]
fn json_long_flag_self_pid_matches_os_pid() {
    let my_pid = std::process::id().to_string();
    let out = lsofrs().args(["--json", "-p", &my_pid]).output().unwrap();
    assert!(out.status.success());
    let v: Vec<serde_json::Value> = serde_json::from_slice(&out.stdout).unwrap();
    assert_eq!(v[0]["pid"].as_i64().unwrap(), std::process::id() as i64);
}

#[test]
fn json_self_has_uid_number() {
    let p = self_json_process();
    assert!(
        p["uid"].as_u64().is_some() || p["uid"].as_i64().is_some(),
        "uid should be numeric: {:?}",
        p["uid"]
    );
}

#[test]
fn json_long_flag_self_pid_uid_numeric() {
    let my_pid = std::process::id().to_string();
    let out = lsofrs().args(["--json", "-p", &my_pid]).output().unwrap();
    assert!(out.status.success());
    let v: Vec<serde_json::Value> = serde_json::from_slice(&out.stdout).unwrap();
    let uid = &v[0]["uid"];
    assert!(
        uid.as_u64().is_some() || uid.as_i64().is_some(),
        "uid should be numeric with --json: {uid:?}"
    );
}

#[test]
fn json_self_has_pgid_ppid_numbers() {
    let p = self_json_process();
    assert!(p["pgid"].as_i64().is_some());
    assert!(p["ppid"].as_i64().is_some());
}

#[test]
fn json_self_files_is_nonempty_array() {
    let p = self_json_process();
    let files = p["files"].as_array().expect("files array");
    assert!(!files.is_empty());
}

#[test]
fn json_long_flag_files_array_non_empty_for_self() {
    let my_pid = std::process::id().to_string();
    let out = lsofrs().args(["--json", "-p", &my_pid]).output().unwrap();
    assert!(out.status.success());
    let v: Vec<serde_json::Value> = serde_json::from_slice(&out.stdout).unwrap();
    let files = v[0]["files"].as_array().expect("files array");
    assert!(!files.is_empty());
}

#[test]
fn json_each_file_has_fd_type_name_strings() {
    let p = self_json_process();
    for f in p["files"].as_array().unwrap() {
        assert!(
            f["fd"].as_str().is_some(),
            "fd should be string: {:?}",
            f["fd"]
        );
        assert!(
            f["type"].as_str().is_some(),
            "type should be string: {:?}",
            f["type"]
        );
        assert!(
            f["name"].as_str().is_some(),
            "name should be string: {:?}",
            f["name"]
        );
    }
}

#[test]
fn json_output_stream_is_utf8() {
    let my_pid = std::process::id().to_string();
    let out = lsofrs().args(["-J", "-p", &my_pid]).output().unwrap();
    assert!(String::from_utf8(out.stdout.clone()).is_ok());
}

#[test]
fn json_short_and_long_flags_same_process_row() {
    let my_pid = std::process::id().to_string();
    let a = lsofrs().args(["-J", "-p", &my_pid]).output().unwrap();
    let b = lsofrs().args(["--json", "-p", &my_pid]).output().unwrap();
    assert!(a.status.success() && b.status.success());
    let pa: Vec<serde_json::Value> = serde_json::from_slice(&a.stdout).unwrap();
    let pb: Vec<serde_json::Value> = serde_json::from_slice(&b.stdout).unwrap();
    assert_eq!(pa[0]["pid"], pb[0]["pid"]);
    assert_eq!(pa[0]["command"], pb[0]["command"]);
}

#[test]
fn json_stderr_empty_for_success() {
    let my_pid = std::process::id().to_string();
    let out = lsofrs().args(["-J", "-p", &my_pid]).output().unwrap();
    assert!(out.status.success());
    assert!(out.stderr.is_empty());
}