getvfsbyname(3) BSD Library Functions Manual getvfsbyname(3)
getvfsbyname -- get information about a filesystem
Standard C Library (libc, -lc)
#include <sys/param.h> #include <sys/mount.h> int getvfsbyname(const char *name, struct vfsconf *vfc);
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
The getvfsbyname() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
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.
A variant of the getvfsbyname() function first appeared in FreeBSD 2.0. BSD May 4, 1995 BSD
Mac OS X 10.8 - Generated Tue Aug 28 05:45:28 CDT 2012