procfs_auxv.c revision 1.2.4.2
1 1.2.4.2 bouyer /* $NetBSD: procfs_auxv.c,v 1.2.4.2 2017/04/21 16:54:04 bouyer Exp $ */ 2 1.2.4.2 bouyer 3 1.2.4.2 bouyer /*- 4 1.2.4.2 bouyer * Copyright (c) 2017 The NetBSD Foundation, Inc. 5 1.2.4.2 bouyer * All rights reserved. 6 1.2.4.2 bouyer * 7 1.2.4.2 bouyer * This code is derived from software contributed to The NetBSD Foundation 8 1.2.4.2 bouyer * by Christos Zoulas. 9 1.2.4.2 bouyer * 10 1.2.4.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.2.4.2 bouyer * modification, are permitted provided that the following conditions 12 1.2.4.2 bouyer * are met: 13 1.2.4.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.2.4.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.2.4.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.4.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.2.4.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.2.4.2 bouyer * 19 1.2.4.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.4.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.4.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.4.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.4.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.4.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.4.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.4.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.4.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.4.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.4.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 30 1.2.4.2 bouyer */ 31 1.2.4.2 bouyer #include <sys/cdefs.h> 32 1.2.4.2 bouyer __KERNEL_RCSID(0, "$NetBSD: procfs_auxv.c,v 1.2.4.2 2017/04/21 16:54:04 bouyer Exp $"); 33 1.2.4.2 bouyer 34 1.2.4.2 bouyer #include <sys/param.h> 35 1.2.4.2 bouyer #include <sys/systm.h> 36 1.2.4.2 bouyer #include <sys/proc.h> 37 1.2.4.2 bouyer #include <sys/kmem.h> 38 1.2.4.2 bouyer 39 1.2.4.2 bouyer #include <miscfs/procfs/procfs.h> 40 1.2.4.2 bouyer 41 1.2.4.2 bouyer int 42 1.2.4.2 bouyer procfs_doauxv(struct lwp *curl, struct proc *p, struct pfsnode *pfs, 43 1.2.4.2 bouyer struct uio *uio) 44 1.2.4.2 bouyer { 45 1.2.4.2 bouyer int error; 46 1.2.4.2 bouyer void *buffer; 47 1.2.4.2 bouyer size_t bufsize; 48 1.2.4.2 bouyer 49 1.2.4.2 bouyer if (uio->uio_rw != UIO_READ) 50 1.2.4.2 bouyer return EOPNOTSUPP; 51 1.2.4.2 bouyer 52 1.2.4.2 bouyer if ((error = proc_getauxv(p, &buffer, &bufsize)) != 0) 53 1.2.4.2 bouyer return error; 54 1.2.4.2 bouyer 55 1.2.4.2 bouyer if (uio->uio_offset < bufsize) 56 1.2.4.2 bouyer error = uiomove((char *)buffer + uio->uio_offset, 57 1.2.4.2 bouyer bufsize - uio->uio_offset, uio); 58 1.2.4.2 bouyer else 59 1.2.4.2 bouyer error = 0; 60 1.2.4.2 bouyer 61 1.2.4.2 bouyer kmem_free(buffer, bufsize); 62 1.2.4.2 bouyer return error; 63 1.2.4.2 bouyer } 64 1.2.4.2 bouyer 65 1.2.4.2 bouyer int 66 1.2.4.2 bouyer procfs_validauxv(struct lwp *l, struct mount *mp) 67 1.2.4.2 bouyer { 68 1.2.4.2 bouyer return l != NULL && l->l_proc != NULL && l->l_proc->p_execsw != NULL; 69 1.2.4.2 bouyer } 70
Indexes created Fri Oct 03 02:09:57 GMT 2025