1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * lx_sendfile() and lx_sendfile64() are just branded versions of the 31 * library calls available in the Solaris libsendfile (see sendfile(3EXT)). 32 */ 33 34 #include <sys/types.h> 35 #include <sys/syscall.h> 36 #include <sys/sendfile.h> 37 #include <string.h> 38 #include <errno.h> 39 #include <sys/lx_misc.h> 40 41 int 42 lx_sendfile(uintptr_t p1, uintptr_t p2, uintptr_t p3, uintptr_t p4) 43 { 44 sysret_t rval; 45 off_t off = 0; 46 off_t *offp = (off_t *)p3; 47 int error; 48 struct sendfilevec sfv; 49 size_t xferred; 50 size_t sz = (size_t)p4; 51 52 if (sz > 0 && uucopy(offp, &off, sizeof (off)) != 0) 53 return (-errno); 54 55 sfv.sfv_fd = p2; 56 sfv.sfv_flag = 0; 57 sfv.sfv_off = off; 58 sfv.sfv_len = sz; 59 error = __systemcall(&rval, SYS_sendfilev, SENDFILEV, p1, &sfv, 60 1, &xferred); 61 62 if (error == 0 && xferred > 0) { 63 off += xferred; 64 error = uucopy(&off, offp, sizeof (off)); 65 } 66 67 return (error ? -error : (int)rval.sys_rval1); 68 } 69 70 int 71 lx_sendfile64(uintptr_t p1, uintptr_t p2, uintptr_t p3, uintptr_t p4) 72 { 73 sysret_t rval; 74 off64_t off = 0; 75 off64_t *offp = (off64_t *)p3; 76 size_t sz = (size_t)p4; 77 int error; 78 struct sendfilevec64 sfv; 79 size_t xferred; 80 81 if (sz > 0 && uucopy(offp, &off, sizeof (off)) != 0) 82 return (-errno); 83 84 sfv.sfv_fd = p2; 85 sfv.sfv_flag = 0; 86 sfv.sfv_off = off; 87 sfv.sfv_len = sz; 88 error = __systemcall(&rval, SYS_sendfilev, SENDFILEV64, p1, &sfv, 89 1, &xferred); 90 91 if (error == 0 && xferred > 0) { 92 off += xferred; 93 error = uucopy(&off, offp, sizeof (off)); 94 } 95 96 return (error ? -error : (int)rval.sys_rval1); 97 }