getfsent, getfsspec, getfsfile, setfsent, endfsent - get
file system descriptor
file entry
#include <fstab.h>
struct fstab *
getfsent(void);
struct fstab *
getfsspec(const char *spec);
struct fstab *
getfsfile(const char *file);
int
setfsent(void);
void
endfsent(void);
The getfsent(), getfsspec(), and getfsfile() functions each
return a
pointer to an object with the following structure containing
the brokenout
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 fsck */
};
The fields have meanings described in fstab(5).
setfsent() opens the file (closing any previously opened
file) or rewinds
it if it is already open.
endfsent() 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.
The getfsent(), getfsspec(), and getfsfile() functions return a null
pointer on EOF or error. The setfsent() function returns 0
on failure or
1 on success. The endfsent() function returns nothing.
/etc/fstab file system table
fstab(5)
The getfsent() function appeared in 4.0BSD; the endfsent(),
getfsfile(),
getfsspec(), and setfsent() functions appeared in 4.3BSD.
These functions use static data storage; if the data is
needed for future
use, it should be copied before any subsequent calls overwrite it.
OpenBSD 3.6 June 4, 1993
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