getvfsbyname man page on 4.4BSD

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GETVFSBYNAME(3)		 BSD Library Functions Manual	       GETVFSBYNAME(3)

NAME
     getvfsbyname — get information about a filesystem

SYNOPSIS
     #include <sys/types.h>
     #include <sys/mount.h>
     #include <kvm.h>

     int
     getvfsbyname(const char *name, struct vfsconf *vfc);

DESCRIPTION
     The getvfsbyname() function provides access to information about a
     filesystem module that is configured in the kernel.  If successful, the
     requested filesystem vfsconf is returned in the location pointed to by
     vfc.  The fields in a “struct vfsconf” are defined as follows:

     vfc_name	   the name of the filesystem
     vfc_typenum   the filesystem type number assigned by the kernel
     vfc_refcount  the number of active mount points using the filesystem
     vfc_flags	   flag bits that are used to initialize a new mount point
		   using the filesystem

RETURN VALUES
     If the call to getvfsbyname is successful, 0 is returned.	Otherwise -1
     is returned and errno is set appropriately.

ERRORS
     The following errors may be reported:

     [EFAULT]		The vfc pointer contains an invalid address.

     [ENOENT]		The name specifies a filesystem that is unknown or not
			configured in the kernel.

SEE ALSO
     sysctl(1), mount(2), sysctl(3), mount(8)

HISTORY
     A variant of the getvfsbyname() function first appeared in FreeBSD 2.0.

BSD				  May 4, 1995				   BSD
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