DragonFly On-Line Manual Pages

GETMNTINFO(3)         DragonFly Library Functions Manual         GETMNTINFO(3)

NAME
     getmntinfo, getmntvinfo -- get information about mounted file systems

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/param.h>
     #include <sys/ucred.h>
     #include <sys/mount.h>

     int
     getmntinfo(struct statfs **mntbufp, int flags);

     int
     getmntvinfo(struct statfs **mntbufp, struct statvfs **mntvbufp,
         int flags);

DESCRIPTION
     The getmntinfo() function returns an array of statfs() structures
     describing each currently mounted file system (see statfs(2)).

     The getmntinfo() function passes its flags argument transparently to
     getfsstat(2).

     The getmntvinfo() function returns an array of statfs and statvfs struc-
     tures describing each currently mounted file system (see statfs(2)), and
     otherwise works like getmntinfo().

RETURN VALUES
     On successful completion, getmntinfo() returns a count of the number of
     elements in the array.  The pointer to the array is stored into mntbufp.

     If an error occurs, zero is returned and the external variable errno is
     set to indicate the error.  Although the pointer mntbufp will be unmodi-
     fied, any information previously returned by getmntinfo() will be lost.

     The getmntvinfo() function additionally stores the pointer to the statvfs
     array into mntvbufp.

ERRORS
     The getmntinfo() and getmntvinfo() functions may fail and set errno for
     any of the errors specified for the library routines getfsstat(2),
     getvfsstat(2) or malloc(3).

SEE ALSO
     getfsstat(2), getvfsstat(2), mount(2), statfs(2), mount(8)

HISTORY
     The getmntinfo() function first appeared in 4.4BSD.

     The getmntvinfo() function first appeared in DragonFly 1.13.

BUGS
     The getmntinfo() and getmntvinfo() functions write the array of struc-
     tures to an internal static object and returns a pointer to that object.
     Subsequent calls to getmntinfo() or getmntvinfo() will modify the same
     object.

     The memory allocated by getmntinfo() or getmntvinfo() cannot be free(3)'d
     by the application.

DragonFly 3.5                    April 1, 2011                   DragonFly 3.5