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

NAME

getvfsbyname — get information about a filesystem

LIBRARY

Standard C Library (libc, −lc)

SYNOPSIS

#include <sys/param.h>
#include <sys/mount.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 as described in getvfsent(3)

RETURN VALUES

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.

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

mount(2), getvfsent(3), sysctl(3), mount(8), sysctl(8)

HISTORY

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

BSD May 4, 1995 BSD

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