1 /* 2 * Copyright (c) 2002-2005 Roland McGrath <roland (at) redhat.com> 3 * Copyright (c) 2004 Ulrich Drepper <drepper (at) redhat.com> 4 * Copyright (c) 2005-2016 Dmitry V. Levin <ldv (at) altlinux.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "defs.h" 31 32 #ifdef HAVE_SYS_XATTR_H 33 # include <sys/xattr.h> 34 #endif 35 36 #include "xlat/xattrflags.h" 37 38 #ifndef XATTR_SIZE_MAX 39 # define XATTR_SIZE_MAX 65536 40 #endif 41 42 static void 43 print_xattr_val(struct tcb *const tcp, 44 const kernel_ulong_t addr, 45 const kernel_ulong_t insize, 46 const kernel_ulong_t size) 47 { 48 tprints(", "); 49 50 if (size > XATTR_SIZE_MAX) 51 printaddr(addr); 52 else 53 printstr_ex(tcp, addr, size, QUOTE_OMIT_TRAILING_0); 54 tprintf(", %" PRI_klu, insize); 55 } 56 57 SYS_FUNC(setxattr) 58 { 59 printpath(tcp, tcp->u_arg[0]); 60 tprints(", "); 61 printstr(tcp, tcp->u_arg[1]); 62 print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]); 63 tprints(", "); 64 printflags(xattrflags, tcp->u_arg[4], "XATTR_???"); 65 return RVAL_DECODED; 66 } 67 68 SYS_FUNC(fsetxattr) 69 { 70 printfd(tcp, tcp->u_arg[0]); 71 tprints(", "); 72 printstr(tcp, tcp->u_arg[1]); 73 print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]); 74 tprints(", "); 75 printflags(xattrflags, tcp->u_arg[4], "XATTR_???"); 76 return RVAL_DECODED; 77 } 78 79 SYS_FUNC(getxattr) 80 { 81 if (entering(tcp)) { 82 printpath(tcp, tcp->u_arg[0]); 83 tprints(", "); 84 printstr(tcp, tcp->u_arg[1]); 85 } else { 86 print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval); 87 } 88 return 0; 89 } 90 91 SYS_FUNC(fgetxattr) 92 { 93 if (entering(tcp)) { 94 printfd(tcp, tcp->u_arg[0]); 95 tprints(", "); 96 printstr(tcp, tcp->u_arg[1]); 97 } else { 98 print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval); 99 } 100 return 0; 101 } 102 103 static void 104 print_xattr_list(struct tcb *const tcp, const kernel_ulong_t addr, 105 const kernel_ulong_t size) 106 { 107 if (!size || syserror(tcp)) { 108 printaddr(addr); 109 } else { 110 printstrn(tcp, addr, tcp->u_rval); 111 } 112 tprintf(", %" PRI_klu, size); 113 } 114 115 SYS_FUNC(listxattr) 116 { 117 if (entering(tcp)) { 118 printpath(tcp, tcp->u_arg[0]); 119 tprints(", "); 120 } else { 121 print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]); 122 } 123 return 0; 124 } 125 126 SYS_FUNC(flistxattr) 127 { 128 if (entering(tcp)) { 129 printfd(tcp, tcp->u_arg[0]); 130 tprints(", "); 131 } else { 132 print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]); 133 } 134 return 0; 135 } 136 137 SYS_FUNC(removexattr) 138 { 139 printpath(tcp, tcp->u_arg[0]); 140 tprints(", "); 141 printstr(tcp, tcp->u_arg[1]); 142 return RVAL_DECODED; 143 } 144 145 SYS_FUNC(fremovexattr) 146 { 147 printfd(tcp, tcp->u_arg[0]); 148 tprints(", "); 149 printstr(tcp, tcp->u_arg[1]); 150 return RVAL_DECODED; 151 } 152