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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1997-2000 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/isa_defs.h> 30 #include <stdlib.h> 31 #include <unistd.h> 32 #include <errno.h> 33 #include <fcntl.h> 34 #include "libproc.h" 35 36 /* 37 * fcntl() system call -- executed by subject process. 38 */ 39 int 40 pr_fcntl(struct ps_prochandle *Pr, int fd, int cmd, void *argp) 41 { 42 sysret_t rval; /* return value from fcntl() */ 43 argdes_t argd[3]; /* arg descriptors for fcntl() */ 44 argdes_t *adp; 45 int error; 46 47 if (Pr == NULL) /* no subject process */ 48 return (fcntl(fd, cmd, argp)); 49 50 adp = &argd[0]; /* file descriptor argument */ 51 adp->arg_value = fd; 52 adp->arg_object = NULL; 53 adp->arg_type = AT_BYVAL; 54 adp->arg_inout = AI_INPUT; 55 adp->arg_size = 0; 56 57 adp++; /* cmd argument */ 58 #ifdef _LP64 59 if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32) { 60 /* 61 * Guilty knowledge of the large file compilation environment 62 */ 63 switch (cmd) { 64 case F_GETLK: 65 cmd = 33; 66 break; 67 case F_SETLK: 68 cmd = 34; 69 break; 70 case F_SETLKW: 71 cmd = 35; 72 break; 73 case F_FREESP: 74 cmd = 27; 75 break; 76 } 77 } 78 #endif /* _LP64 */ 79 adp->arg_value = cmd; 80 adp->arg_object = NULL; 81 adp->arg_type = AT_BYVAL; 82 adp->arg_inout = AI_INPUT; 83 adp->arg_size = 0; 84 85 adp++; /* argp argument */ 86 if (argp == NULL) { 87 adp->arg_value = 0; 88 adp->arg_object = NULL; 89 adp->arg_type = AT_BYVAL; 90 adp->arg_inout = AI_INPUT; 91 adp->arg_size = 0; 92 } else { 93 adp->arg_value = 0; 94 adp->arg_object = argp; 95 adp->arg_type = AT_BYREF; 96 adp->arg_inout = AI_INOUT; 97 switch (cmd) { 98 case F_GETLK: 99 case F_SETLK: 100 case F_SETLKW: 101 case F_ALLOCSP: 102 case F_FREESP: 103 adp->arg_size = sizeof (struct flock); 104 break; 105 #ifdef _LP64 106 case 33: 107 case 34: 108 case 35: 109 case 27: 110 adp->arg_size = sizeof (struct flock64_32); 111 #else /* _LP64 */ 112 case F_GETLK64: 113 case F_SETLK64: 114 case F_SETLKW64: 115 case F_FREESP64: 116 adp->arg_size = sizeof (struct flock64); 117 #endif /* _LP64 */ 118 break; 119 case F_SHARE: 120 case F_UNSHARE: 121 adp->arg_size = sizeof (struct fshare); 122 break; 123 default: 124 adp->arg_value = (long)argp; 125 adp->arg_object = NULL; 126 adp->arg_type = AT_BYVAL; 127 adp->arg_inout = AI_INPUT; 128 adp->arg_size = 0; 129 break; 130 } 131 } 132 133 error = Psyscall(Pr, &rval, SYS_fcntl, 3, &argd[0]); 134 135 if (error) { 136 errno = (error > 0)? error : ENOSYS; 137 return (-1); 138 } 139 return (rval.sys_rval1); 140 } 141