Without further ado, the following was found:
Issue: mountd(8) → B<mountd>(8)
"/*\n"
" * These are the commands understood by nfsctl().\n"
" */\n"
"#define NFSCTL_SVC 0 /* This is a server process. */\n"
"#define NFSCTL_ADDCLIENT 1 /* Add an NFS client. */\n"
"#define NFSCTL_DELCLIENT 2 /* Remove an NFS client. */\n"
"#define NFSCTL_EXPORT 3 /* Export a filesystem. */\n"
"#define NFSCTL_UNEXPORT 4 /* Unexport a filesystem. */\n"
"#define NFSCTL_UGIDUPDATE 5 /* Update a client\\[aq]s UID/GID map\n"
" (only in Linux 2.4.x and earlier). */\n"
"#define NFSCTL_GETFH 6 /* Get a file handle (used by mountd(8))\n"
" (only in Linux 2.4.x and earlier). */\n"
"\\&\n"
"struct nfsctl_arg {\n"
" int ca_version; /* safeguard */\n"
" union {\n"
" struct nfsctl_svc u_svc;\n"
" struct nfsctl_client u_client;\n"
" struct nfsctl_export u_export;\n"
" struct nfsctl_uidmap u_umap;\n"
" struct nfsctl_fhparm u_getfh;\n"
" unsigned int u_debug;\n"
" } u;\n"
"}\n"
"\\&\n"
"union nfsctl_res {\n"
" struct knfs_fh cr_getfh;\n"
" unsigned int cr_debug;\n"
"};\n"
