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