Copyright (c) 1999 Alfred Perlstein

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$FreeBSD: head/share/man/man9/VFS_CHECKEXP.9 115440 2003-05-31 14:07:25Z hmp $

.Dd September 10, 1999 .Os .Dt VFS_CHECKEXP 9 .Sh NAME .Nm VFS_CHECKEXP .Nd check if a file system is exported to a client .Sh SYNOPSIS n sys/param.h n sys/mount.h .Ft int .Fn VFS_CHECKEXP "struct mount *mp" "struct sockaddr *nam" "int *exflagsp" "struct ucred **credanonp" .Sh DESCRIPTION This is used by the NFS server to check if a mount point is exported to a client.

p Its arguments are: l -tag -width credanonp t Fa mp The mount point to be checked. t Fa nam An mbuf containing the network address of the client. t Fa exflagsp Return parameter for the export flags for this client. t Fa credanonp Return parameter for the anonymous credentials for this client. .El

p This should be called on a file system's mount structure to determine if it is exported to a client whose address is contained in .Fa nam .

p It is generally called before .Xr VFS_FHTOVP 9 to validate that a client has access to the file system.

p The file system should call .Xr vfs_export_lookup 9 with the address of an appropriate .Vt netexport structure and the address of the client, .Fa nam , to verify that the client can access this file system. .Sh RETURN VALUES The export flags and anonymous credentials specific to the client (returned by .Xr vfs_export_lookup 9 ) will be returned in .Fa *exflagsp and .Fa *credanonp . .Sh SEE ALSO .Xr VFS 9 , .Xr VFS_FHTOVP 9 , .Xr VFS_VPTOFH 9 , .Xr vnode 9 .Sh AUTHORS This man page was written by .An Alfred Perlstein .