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 2010 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <stdlib.h> 28 #include <unistd.h> 29 #include <string.h> 30 #include <errno.h> 31 #include "libproc.h" 32 33 /* 34 * rename() system call -- executed by subject process. 35 */ 36 int 37 pr_rename(struct ps_prochandle *Pr, const char *old, const char *new) 38 { 39 sysret_t rval; 40 argdes_t argd[4]; 41 argdes_t *adp; 42 int error; 43 44 if (Pr == NULL) 45 return (rename(old, new)); 46 47 adp = &argd[0]; /* old fd argument */ 48 adp->arg_value = AT_FDCWD; 49 adp->arg_object = NULL; 50 adp->arg_type = AT_BYVAL; 51 adp->arg_inout = AI_INPUT; 52 adp->arg_size = 0; 53 54 adp++; /* move to old argument */ 55 adp->arg_value = 0; 56 adp->arg_object = (void *)old; 57 adp->arg_type = AT_BYREF; 58 adp->arg_inout = AI_INPUT; 59 adp->arg_size = strlen(old) + 1; 60 61 adp++; /* move to new fd argument */ 62 adp->arg_value = AT_FDCWD; 63 adp->arg_object = NULL; 64 adp->arg_type = AT_BYVAL; 65 adp->arg_inout = AI_INPUT; 66 adp->arg_size = 0; 67 68 adp++; /* move to new argument */ 69 adp->arg_value = 0; 70 adp->arg_object = (void *)new; 71 adp->arg_type = AT_BYREF; 72 adp->arg_inout = AI_INPUT; 73 adp->arg_size = strlen(new) + 1; 74 75 error = Psyscall(Pr, &rval, SYS_renameat, 4, &argd[0]); 76 77 if (error) { 78 errno = (error > 0) ? error : ENOSYS; 79 return (-1); 80 } 81 return (rval.sys_rval1); 82 } 83 84 /* 85 * link() system call -- executed by subject process. 86 */ 87 int 88 pr_link(struct ps_prochandle *Pr, const char *existing, const char *new) 89 { 90 sysret_t rval; 91 argdes_t argd[2]; 92 argdes_t *adp; 93 int error; 94 95 if (Pr == NULL) 96 return (link(existing, new)); 97 98 adp = &argd[0]; /* existing argument */ 99 adp->arg_value = 0; 100 adp->arg_object = (void *)existing; 101 adp->arg_type = AT_BYREF; 102 adp->arg_inout = AI_INPUT; 103 adp->arg_size = strlen(existing) + 1; 104 105 adp++; /* new argument */ 106 adp->arg_value = 0; 107 adp->arg_object = (void *)new; 108 adp->arg_type = AT_BYREF; 109 adp->arg_inout = AI_INPUT; 110 adp->arg_size = strlen(new) + 1; 111 112 error = Psyscall(Pr, &rval, SYS_link, 2, &argd[0]); 113 114 if (error) { 115 errno = (error > 0) ? error : ENOSYS; 116 return (-1); 117 } 118 return (rval.sys_rval1); 119 } 120 121 /* 122 * unlink() system call -- executed by subject process. 123 */ 124 int 125 pr_unlink(struct ps_prochandle *Pr, const char *path) 126 { 127 sysret_t rval; 128 argdes_t argd[3]; 129 argdes_t *adp; 130 int error; 131 132 if (Pr == NULL) 133 return (unlink(path)); 134 135 adp = &argd[0]; /* directory fd argument */ 136 adp->arg_value = AT_FDCWD; 137 adp->arg_object = NULL; 138 adp->arg_type = AT_BYVAL; 139 adp->arg_inout = AI_INPUT; 140 adp->arg_size = 0; 141 adp++; /* move to path argument */ 142 143 adp->arg_value = 0; 144 adp->arg_object = (void *)path; 145 adp->arg_type = AT_BYREF; 146 adp->arg_inout = AI_INPUT; 147 adp->arg_size = strlen(path) + 1; 148 adp++; /* move to flags argument */ 149 150 adp->arg_value = 0; 151 adp->arg_object = NULL; 152 adp->arg_type = AT_BYVAL; 153 adp->arg_inout = AI_INPUT; 154 adp->arg_size = 0; 155 156 error = Psyscall(Pr, &rval, SYS_unlinkat, 3, &argd[0]); 157 158 if (error) { 159 errno = (error > 0) ? error : ENOSYS; 160 return (-1); 161 } 162 return (rval.sys_rval1); 163 } 164