#include "defs.h"
static void
-printargv(struct tcb *tcp, long addr)
+printargv(struct tcb *const tcp, kernel_ureg_t addr)
{
- union {
- unsigned int p32;
- unsigned long p64;
- char data[sizeof(long)];
- } cp;
- const char *sep;
- unsigned int n = 0;
- const unsigned wordsize = current_wordsize;
-
- cp.p64 = 1;
- for (sep = ""; !abbrev(tcp) || n < max_strlen / 2; sep = ", ", ++n) {
- if (umoven_or_printaddr(tcp, addr, wordsize, cp.data))
+ 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;
+ kernel_ulong_t p64;
+ char data[sizeof(kernel_ulong_t)];
+ } 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);
}
- if (cp.p64)
- tprintf("%s...", sep);
+ tprints("]");
}
static void
-printargc(const char *fmt, struct tcb *tcp, long addr)
+printargc(struct tcb *const tcp, kernel_ureg_t addr)
{
- int count;
+ if (!addr || !verbose(tcp)) {
+ printaddr(addr);
+ return;
+ }
+
+ bool unterminated = false;
+ unsigned int count = 0;
char *cp = NULL;
- for (count = 0; !umoven(tcp, addr, current_wordsize, &cp) && cp; count++) {
- addr += current_wordsize;
+ 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
printpath(tcp, tcp->u_arg[index + 0]);
tprints(", ");
- if (!tcp->u_arg[index + 1] || !verbose(tcp))
- printaddr(tcp->u_arg[index + 1]);
- else {
- tprints("[");
- printargv(tcp, tcp->u_arg[index + 1]);
- tprints("]");
- }
+ printargv(tcp, tcp->u_arg[index + 1]);
tprints(", ");
- if (!tcp->u_arg[index + 2] || !verbose(tcp))
- printaddr(tcp->u_arg[index + 2]);
- else if (abbrev(tcp))
- printargc("[/* %d var%s */]", tcp, tcp->u_arg[index + 2]);
- else {
- tprints("[");
- printargv(tcp, tcp->u_arg[index + 2]);
- tprints("]");
- }
+ (abbrev(tcp) ? printargc : printargv) (tcp, tcp->u_arg[index + 2]);
}
SYS_FUNC(execve)
{
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
- if (!tcp->u_arg[1] || !verbose(tcp))
- printaddr(tcp->u_arg[1]);
- else {
- tprints("[");
- printargv(tcp, tcp->u_arg[1]);
- tprints("]");
- }
+ printargv(tcp, tcp->u_arg[1]);
return RVAL_DECODED;
}