1 use std::{collections::HashMap, io::BufRead};
6 #[cfg(feature = "serde1")]
7 use serde::{Deserialize, Serialize};
9 /// A mountpoint entry under `/proc/mounts`
10 #[derive(Debug, Clone)]
11 #[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
12 #[allow(non_snake_case)]
13 pub struct MountEntry {
19 pub fs_vfstype: String,
21 pub fs_mntops: HashMap<String, Option<String>>,
28 impl super::FromBufRead for Vec<MountEntry> {
29 fn from_buf_read<R: BufRead>(r: R) -> ProcResult<Self> {
30 let mut vec = Vec::new();
32 for line in r.lines() {
33 let line = expect!(line);
34 let mut s = line.split_whitespace();
36 let fs_spec = unmangle_octal(expect!(s.next()));
37 let fs_file = unmangle_octal(expect!(s.next()));
38 let fs_vfstype = unmangle_octal(expect!(s.next()));
39 let fs_mntops = unmangle_octal(expect!(s.next()));
40 let fs_mntops: HashMap<String, Option<String>> = fs_mntops
43 let mut split = s.splitn(2, '=');
44 let k = split.next().unwrap().to_string(); // can not fail, splitn will always return at least 1 element
45 let v = split.next().map(|s| s.to_string());
50 let fs_freq = expect!(u8::from_str(expect!(s.next())));
51 let fs_passno = expect!(u8::from_str(expect!(s.next())));
53 let mount_entry = MountEntry {
62 vec.push(mount_entry);
69 /// Unmangle spaces ' ', tabs '\t', line breaks '\n', backslashes '\\', and hashes '#'
71 /// See https://elixir.bootlin.com/linux/v6.2.8/source/fs/proc_namespace.c#L89
72 pub(crate) fn unmangle_octal(input: &str) -> String {
73 let mut input = input.to_string();
75 for (octal, c) in [(r"\011", "\t"), (r"\012", "\n"), (r"\134", "\\"), (r"\043", "#")] {
76 input = input.replace(octal, c);
83 fn test_unmangle_octal() {
85 (r"a\134b\011c\012d\043e", "a\\b\tc\nd#e"), // all escaped chars with abcde in between
86 (r"abcd", r"abcd"), // do nothing
89 for (input, expected) in tests {
90 assert_eq!(unmangle_octal(input), expected);
96 use crate::FromBufRead;
99 let s = "proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
100 sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
101 /dev/mapper/ol-root / xfs rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota 0 0
102 Downloads /media/sf_downloads vboxsf rw,nodev,relatime,iocharset=utf8,uid=0,gid=977,dmode=0770,fmode=0770,tag=VBoxAutomounter 0 0";
104 let cursor = Cursor::new(s);
105 let mounts = Vec::<MountEntry>::from_buf_read(cursor).unwrap();
106 assert_eq!(mounts.len(), 4);