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148 lines
3.9 KiB
148 lines
3.9 KiB
/* |
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* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl> |
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* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> |
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* Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com> |
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* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> |
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* Copyright (c) 2007 Roland McGrath <roland@redhat.com> |
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* Copyright (c) 2011-2012 Denys Vlasenko <vda.linux@googlemail.com> |
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* Copyright (c) 2010-2015 Dmitry V. Levin <ldv@altlinux.org> |
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* Copyright (c) 2014-2018 The strace developers. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "defs.h" |
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static void |
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printargv(struct tcb *const tcp, kernel_ulong_t addr) |
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{ |
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if (!addr || !verbose(tcp)) { |
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printaddr(addr); |
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return; |
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} |
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const char *const start_sep = "["; |
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const char *sep = start_sep; |
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const unsigned int wordsize = current_wordsize; |
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unsigned int n; |
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for (n = 0; addr; sep = ", ", addr += wordsize, ++n) { |
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union { |
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unsigned int p32; |
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kernel_ulong_t p64; |
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char data[sizeof(kernel_ulong_t)]; |
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} cp; |
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if (umoven(tcp, addr, wordsize, cp.data)) { |
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if (sep == start_sep) |
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printaddr(addr); |
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else { |
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tprints(", ..."); |
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printaddr_comment(addr); |
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tprints("]"); |
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} |
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return; |
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} |
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if (!(wordsize < sizeof(cp.p64) ? cp.p32 : cp.p64)) { |
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if (sep == start_sep) |
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tprints(start_sep); |
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break; |
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} |
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if (abbrev(tcp) && n >= max_strlen) { |
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tprintf("%s...", sep); |
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break; |
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} |
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tprints(sep); |
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printstr(tcp, wordsize < sizeof(cp.p64) ? cp.p32 : cp.p64); |
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} |
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tprints("]"); |
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} |
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static void |
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printargc(struct tcb *const tcp, kernel_ulong_t addr) |
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{ |
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printaddr(addr); |
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if (!addr || !verbose(tcp)) |
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return; |
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bool unterminated = false; |
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unsigned int count = 0; |
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char *cp = NULL; |
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for (; addr; addr += current_wordsize, ++count) { |
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if (umoven(tcp, addr, current_wordsize, &cp)) { |
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if (!count) |
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return; |
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unterminated = true; |
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break; |
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} |
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if (!cp) |
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break; |
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} |
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tprintf_comment("%u var%s%s", |
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count, count == 1 ? "" : "s", |
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unterminated ? ", unterminated" : ""); |
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} |
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static void |
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decode_execve(struct tcb *tcp, const unsigned int index) |
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{ |
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printpath(tcp, tcp->u_arg[index + 0]); |
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tprints(", "); |
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printargv(tcp, tcp->u_arg[index + 1]); |
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tprints(", "); |
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(abbrev(tcp) ? printargc : printargv) (tcp, tcp->u_arg[index + 2]); |
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} |
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SYS_FUNC(execve) |
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{ |
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decode_execve(tcp, 0); |
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return RVAL_DECODED; |
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} |
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SYS_FUNC(execveat) |
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{ |
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print_dirfd(tcp, tcp->u_arg[0]); |
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decode_execve(tcp, 1); |
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tprints(", "); |
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printflags(at_flags, tcp->u_arg[4], "AT_???"); |
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return RVAL_DECODED; |
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} |
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#if defined(SPARC) || defined(SPARC64) |
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SYS_FUNC(execv) |
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{ |
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printpath(tcp, tcp->u_arg[0]); |
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tprints(", "); |
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printargv(tcp, tcp->u_arg[1]); |
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return RVAL_DECODED; |
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} |
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#endif /* SPARC || SPARC64 */
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