1 /* 2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk (at) cs.few.eur.nl> 3 * Copyright (c) 1993 Branko Lankester <branko (at) hacktic.nl> 4 * Copyright (c) 1993-1996 Rick Sladkey <jrs (at) world.std.com> 5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert (at) cistron.nl> 6 * Copyright (c) 2007 Roland McGrath <roland (at) redhat.com> 7 * Copyright (c) 2011-2012 Denys Vlasenko <vda.linux (at) googlemail.com> 8 * Copyright (c) 2010-2015 Dmitry V. Levin <ldv (at) altlinux.org> 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "defs.h" 35 36 static void 37 printargv(struct tcb *tcp, long addr) 38 { 39 union { 40 unsigned int p32; 41 unsigned long p64; 42 char data[sizeof(long)]; 43 } cp; 44 const char *sep; 45 unsigned int n = 0; 46 const unsigned wordsize = current_wordsize; 47 48 cp.p64 = 1; 49 for (sep = ""; !abbrev(tcp) || n < max_strlen / 2; sep = ", ", ++n) { 50 if (umoven_or_printaddr(tcp, addr, wordsize, cp.data)) 51 return; 52 if (wordsize == 4) 53 cp.p64 = cp.p32; 54 if (cp.p64 == 0) 55 break; 56 tprints(sep); 57 printstr(tcp, cp.p64, -1); 58 addr += wordsize; 59 } 60 if (cp.p64) 61 tprintf("%s...", sep); 62 } 63 64 static void 65 printargc(const char *fmt, struct tcb *tcp, long addr) 66 { 67 int count; 68 char *cp = NULL; 69 70 for (count = 0; !umoven(tcp, addr, current_wordsize, &cp) && cp; count++) { 71 addr += current_wordsize; 72 } 73 tprintf(fmt, count, count == 1 ? "" : "s"); 74 } 75 76 static void 77 decode_execve(struct tcb *tcp, const unsigned int index) 78 { 79 printpath(tcp, tcp->u_arg[index + 0]); 80 tprints(", "); 81 82 if (!tcp->u_arg[index + 1] || !verbose(tcp)) 83 printaddr(tcp->u_arg[index + 1]); 84 else { 85 tprints("["); 86 printargv(tcp, tcp->u_arg[index + 1]); 87 tprints("]"); 88 } 89 tprints(", "); 90 91 if (!tcp->u_arg[index + 2] || !verbose(tcp)) 92 printaddr(tcp->u_arg[index + 2]); 93 else if (abbrev(tcp)) 94 printargc("[/* %d var%s */]", tcp, tcp->u_arg[index + 2]); 95 else { 96 tprints("["); 97 printargv(tcp, tcp->u_arg[index + 2]); 98 tprints("]"); 99 } 100 } 101 102 SYS_FUNC(execve) 103 { 104 decode_execve(tcp, 0); 105 106 return RVAL_DECODED; 107 } 108 109 SYS_FUNC(execveat) 110 { 111 print_dirfd(tcp, tcp->u_arg[0]); 112 decode_execve(tcp, 1); 113 tprints(", "); 114 printflags(at_flags, tcp->u_arg[4], "AT_???"); 115 116 return RVAL_DECODED; 117 } 118 119 #if defined(SPARC) || defined(SPARC64) 120 SYS_FUNC(execv) 121 { 122 printpath(tcp, tcp->u_arg[0]); 123 tprints(", "); 124 if (!tcp->u_arg[1] || !verbose(tcp)) 125 printaddr(tcp->u_arg[1]); 126 else { 127 tprints("["); 128 printargv(tcp, tcp->u_arg[1]); 129 tprints("]"); 130 } 131 132 return RVAL_DECODED; 133 } 134 #endif /* SPARC || SPARC64 */ 135
