The
getfsent(),
getfsspec(), and
getfsfile() functions each return a pointer to an object with the following structure containing the broken-out fields of a line in the file system description file,
<fstab.h>.
struct fstab {
char *fs_spec; /* block special device name */
char *fs_file; /* file system path prefix */
char *fs_vfstype; /* type of file system */
char *fs_mntops; /* comma separated mount options */
char *fs_type; /* rw, ro, sw, or xx */
int fs_freq; /* dump frequency, in days */
int fs_passno; /* pass number on parallel dump */
};
The fields have meanings described in
fstab(5).
The
setfsent() function opens the file (closing any previously opened file) or rewinds it if it is already open.
The
endfsent() function closes the file.
The
getfsspec() and
getfsfile() functions search the entire file (opening it if necessary) for a matching special file name or file system file name.
For programs wishing to read the entire database,
getfsent() reads the next entry (opening the file if necessary).
All entries in the file with a type field equivalent to
FSTAB_XX are ignored.