MTAB(5) — System Interface Manual — File Formats
NAME
mtab − mounted file system table
SYNOPSIS
#include <fstab.h>
#include <mtab.h>
DESCRIPTION
Mtab resides in directory /etc and contains a table of devices mounted by the mount command. Umount removes entries.
The table is a series of mtab structures, as defined in <mtab.h>. Each entry contains the null-padded name of the place where the special file is mounted, the null-padded name of the special file, and a type field, one of those defined in <fstab.h>. The special file has all its directories stripped away; that is, everything through the last ‘/’ is thrown away. The type field indicates if the file system is mounted read-only, read-write, or read-write with disk quotas enabled.
This table is present only so people can look at it. It does not matter to mount if there are duplicated entries nor to umount if a name cannot be found.
FILES
/etc/mtab
SEE ALSO
Sun System Release 1.0 — 26 June 1983