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GETFSENT(3)		 BSD Library Functions Manual		   GETFSENT(3)

NAME
     getfsent, getfsspec, getfsfile, setfsent, endfsent — get file system
     descriptor file entry

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #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);

     void
     setfstab(const char *file);

     const char *
     getfstab(void);

DESCRIPTION
     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;	   /* File system type, ufs, nfs */
		   char	   *fs_mntops;	   /* Mount options ala -o */
		   char	   *fs_type;	   /* FSTAB_* from fs_mntops */
		   int	   fs_freq;	   /* dump frequency, in days */
		   int	   fs_passno;	   /* pass number on parallel fsck */
	   };

     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 setfstab() function sets the file to be used by subsequent opera‐
     tions.  The value set by setfstab() does not persist across calls to
     endfsent().

     The getfstab() function returns the name of the file that will be used.

     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.

RETURN VALUES
     The getfsent(), getfsspec(), and getfsfile() functions return a NULL
     pointer on EOF or error.  The setfsent() function returns 0 on failure, 1
     on success.  The endfsent() function returns nothing.

ENVIRONMENT
     PATH_FSTAB	 If the environment variable PATH_FSTAB is set, all operations
		 are performed against the specified file.  PATH_FSTAB will
		 not be honored if the process environment or memory address
		 space is considered “tainted”.	 (See issetugid(2) for more
		 information.)

FILES
     /etc/fstab

SEE ALSO
     fstab(5)

HISTORY
     The getfsent() function appeared in 4.0BSD; the endfsent(), getfsfile(),
     getfsspec(), and setfsent() functions appeared in 4.3BSD; the setfstab()
     and getfstab() functions appeared in FreeBSD 5.1.

BUGS
     These functions use static data storage; if the data is needed for future
     use, it should be copied before any subsequent calls overwrite it.

BSD				 April 7, 2003				   BSD
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