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 #include <sys/isa_defs.h> 28 #include <stdlib.h> 29 #include <unistd.h> 30 #include <errno.h> 31 #include <fcntl.h> 32 #include "libproc.h" 33 34 /* 35 * fcntl() system call -- executed by subject process. 36 */ 37 int 38 pr_fcntl(struct ps_prochandle *Pr, int fd, int cmd, void *argp) 39 { 40 sysret_t rval; /* return value from fcntl() */ 41 argdes_t argd[3]; /* arg descriptors for fcntl() */ 42 argdes_t *adp; 43 int error; 44 45 if (Pr == NULL) /* no subject process */ 46 return (fcntl(fd, cmd, argp)); 47 48 adp = &argd[0]; /* file descriptor argument */ 49 adp->arg_value = fd; 50 adp->arg_object = NULL; 51 adp->arg_type = AT_BYVAL; 52 adp->arg_inout = AI_INPUT; 53 adp->arg_size = 0; 54 55 adp++; /* cmd argument */ 56 #ifdef _LP64 57 if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32) { 58 /* 59 * Guilty knowledge of the large file compilation environment 60 */ 61 switch (cmd) { 62 case F_GETLK: 63 cmd = 33; 64 break; 65 case F_SETLK: 66 cmd = 34; 67 break; 68 case F_SETLKW: 69 cmd = 35; 70 break; 71 case F_FREESP: 72 cmd = 27; 73 break; 74 } 75 } 76 #endif /* _LP64 */ 77 adp->arg_value = cmd; 78 adp->arg_object = NULL; 79 adp->arg_type = AT_BYVAL; 80 adp->arg_inout = AI_INPUT; 81 adp->arg_size = 0; 82 83 adp++; /* argp argument */ 84 if (argp == NULL) { 85 adp->arg_value = 0; 86 adp->arg_object = NULL; 87 adp->arg_type = AT_BYVAL; 88 adp->arg_inout = AI_INPUT; 89 adp->arg_size = 0; 90 } else { 91 adp->arg_value = 0; 92 adp->arg_object = argp; 93 adp->arg_type = AT_BYREF; 94 adp->arg_inout = AI_INOUT; 95 switch (cmd) { 96 case F_GETLK: 97 case F_SETLK: 98 case F_SETLKW: 99 case F_ALLOCSP: 100 case F_FREESP: 101 adp->arg_size = sizeof (struct flock); 102 break; 103 #ifdef _LP64 104 case 33: 105 case 34: 106 case 35: 107 case 27: 108 adp->arg_size = sizeof (struct flock64_32); 109 #else /* _LP64 */ 110 case F_GETLK64: 111 case F_SETLK64: 112 case F_SETLKW64: 113 case F_FREESP64: 114 adp->arg_size = sizeof (struct flock64); 115 #endif /* _LP64 */ 116 break; 117 case F_SHARE: 118 case F_UNSHARE: 119 adp->arg_size = sizeof (struct fshare); 120 break; 121 default: 122 adp->arg_value = (long)argp; 123 adp->arg_object = NULL; 124 adp->arg_type = AT_BYVAL; 125 adp->arg_inout = AI_INPUT; 126 adp->arg_size = 0; 127 break; 128 } 129 } 130 131 error = Psyscall(Pr, &rval, SYS_fcntl, 3, &argd[0]); 132 133 if (error) { 134 errno = (error > 0)? error : ENOSYS; 135 return (-1); 136 } 137 return (rval.sys_rval1); 138 } 139