1 /* 2 * Copyright (c) 1993 Jan-Simon Pendry 3 * Copyright (c) 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Jan-Simon Pendry. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD: src/sys/miscfs/procfs/procfs_type.c,v 1.6 1999/08/28 00:46:56 peter Exp $ 34 * $DragonFly: src/sys/vfs/procfs/procfs_type.c,v 1.5 2007/02/19 01:14:24 corecode Exp $ 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/proc.h> 40 #include <sys/sysent.h> 41 #include <sys/vnode.h> 42 #include <vfs/procfs/procfs.h> 43 44 int 45 procfs_dotype(struct proc *curp, struct lwp *lp, struct pfsnode *pfs, 46 struct uio *uio) 47 { 48 struct proc *p = lp->lwp_proc; 49 int len; 50 int error; 51 /* 52 * buffer for emulation type 53 */ 54 char mebuffer[256]; 55 char *none = "Not Available"; 56 57 if (uio->uio_rw != UIO_READ) 58 return (EOPNOTSUPP); 59 60 if (uio->uio_offset != 0) 61 return (0); 62 63 if (p && p->p_sysent && p->p_sysent->sv_name) { 64 len = strlen(p->p_sysent->sv_name); 65 bcopy(p->p_sysent->sv_name, mebuffer, len); 66 } else { 67 len = strlen(none); 68 bcopy(none, mebuffer, len); 69 } 70 mebuffer[len++] = '\n'; 71 error = uiomove(mebuffer, len, uio); 72 return error; 73 } 74 75 int 76 procfs_validtype(struct lwp *lp) 77 { 78 return ((lp->lwp_proc->p_flags & P_SYSTEM) == 0); 79 } 80