A single parsed line from /proc/<pid>/mountinfo — one mount in
the namespace's mount table.
The shape mirrors proc(5)'s mountinfo format exactly:
36 35 98:0 /mnt1 /mnt/parent rw,noatime master:1 - ext3 /dev/root rw,errors=continue
(1)(2)(3) (4) (5) (6) (7) (8) (9) (10) (11)
1. mount_id — unique within the namespace
2. parent_id — points at another Entry; -1 if this is the root
3. device — major:minor of st_dev (kept as a string)
4. root — path of this mount's root in the filesystem
5. mount_point — where this mount appears in the namespace
6. mount_options — per-mount options (raw comma-list, e.g. "rw,noatime")
7. propagation — list of {:shared, n} / {:master, n} / {:propagate_from, n} / :unbindable
9. fstype — filesystem type ("ext4", "tmpfs", …)
10. source — mount source (block device path, "tmpfs", …)
11. super_options — per-superblock options (raw comma-list)Field 8, the literal -, separates the per-mount fields from the
per-superblock fields and is not retained.
mount_options and super_options are exposed verbatim as binaries.
A consumer wanting to parse them into a map (e.g. "rw" vs "ro",
"relatime" flag) is welcome to; we don't bake a particular shape
in.
Paths (:root, :mount_point, :source) are decoded from
mountinfo's octal-escape format — kernel writes \040 for space,
\011 for tab, \012 for newline, \134 for backslash; we
decode them back to their actual character before populating the
struct.
Inspect
Renders compactly:
#Linx.Mount.Entry<ext4 on / (rw,relatime)>Summary
Types
Propagation entries from the optional-fields section. Per
mount_namespaces(7)
Types
@type propagation_entry() :: {:shared, non_neg_integer()} | {:master, non_neg_integer()} | {:propagate_from, non_neg_integer()} | :unbindable
Propagation entries from the optional-fields section. Per
mount_namespaces(7):
{:shared, peer_group}— this mount is in shared peer grouppeer_group(an integer).{:master, peer_group}— this mount is a slave of peer grouppeer_group.{:propagate_from, peer_group}— propagation source for slave mounts; rare.:unbindable— bind mounts of this mount aren't allowed.
@type t() :: %Linx.Mount.Entry{ device: String.t(), fstype: String.t(), mount_id: non_neg_integer(), mount_options: String.t(), mount_point: String.t(), parent_id: integer(), propagation: [propagation_entry()], root: String.t(), source: String.t(), super_options: String.t() }