term% cat index.txt FSTAB(5) File Formats Manual FSTAB(5)
NAME
fstab - static information about the filesystems
SYNOPSIS
#include <fstab.h>
DESCRIPTION
The file /etc/fstab contains descriptive information about the various
file systems. /etc/fstab is only read by programs, and not written; it
is the duty of the system administrator to properly create and maintain
this file.
These programs use /etc/fstab: dump, mount, umount, swapon, fsck and
df. The order of records in /etc/fstab is important; fsck, mount, and
umount depend on it.
The special file name is the block special file name, and not the char‐
acter special file name. If a program needs the character special file
name, the program must create it by inserting an `r' after the last `/'
in the special file name.
#define FSTAB "/etc/fstab"
#define FSNMLG 16
#define FSTABFMT "%16s:%16s:%2s:%d:%d\n"
#define FSTABARG(p) (p)->fs_spec, (p)->fs_file, \
(p)->fs_type, &(p)->fs_freq, &(p)->fs_passno
#define FSTABNARGS 5
#define FSTAB_RW "rw" /* read write device */
#define FSTAB_RO "ro" /* read only device */
#define FSTAB_SW "sw" /* swap device */
#define FSTAB_XX "xx" /* ignore totally */
struct fstab {
char fs_spec[FSNMLG]; /* block special device name */
char fs_file[FSNMLG]; /* file system path prefix */
char fs_type[3]; /* rw,ro,sw or xx */
int fs_freq; /* dump frequency, in days */
int fs_passno; /* pass number on parallel dump */
};
The proper way to read records from /etc/fstab is to use the routines
getfsent(), getfsspec() or getfsfile().
FILES
/etc/fstab
SEE ALSO
getfsent(3)
FSTAB(5)