* <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com>
* Copyright (c) 2000 PocketPenguins Inc. Linux for Hitachi SuperH
* port by Greg Banks <gbanks@pocketpenguins.com>
+ * Copyright (c) 1999-2017 The strace developers.
*
* All rights reserved.
*
#include "ptrace.h"
#include "xlat/ptrace_cmds.h"
#include "xlat/ptrace_setoptions_flags.h"
+#include "xlat/ptrace_peeksiginfo_flags.h"
#define uoff(member) offsetof(struct user, member)
#define XLAT_UOFF(member) { uoff(member), "offsetof(struct user, " #member ")" }
XLAT_END
};
-SYS_FUNC(ptrace)
+static void
+print_user_offset_addr(const kernel_ulong_t addr)
{
const struct xlat *x;
- unsigned long addr;
+
+ for (x = struct_user_offsets; x->str; ++x) {
+ if (x->val >= addr)
+ break;
+ }
+
+ if (!x->str) {
+ printaddr(addr);
+ } else if (x->val > addr) {
+ if (x == struct_user_offsets) {
+ printaddr(addr);
+ } else {
+ --x;
+ tprintf("%s + %" PRI_klu,
+ x->str, addr - (kernel_ulong_t) x->val);
+ }
+ } else {
+ tprints(x->str);
+ }
+}
+
+SYS_FUNC(ptrace)
+{
+ const kernel_ulong_t request = tcp->u_arg[0];
+ const int pid = tcp->u_arg[1];
+ const kernel_ulong_t addr = tcp->u_arg[2];
+ const kernel_ulong_t data = tcp->u_arg[3];
if (entering(tcp)) {
- printxval(ptrace_cmds, tcp->u_arg[0], "PTRACE_???");
- tprintf(", %lu, ", tcp->u_arg[1]);
-
- addr = tcp->u_arg[2];
- if (tcp->u_arg[0] == PTRACE_PEEKUSER
- || tcp->u_arg[0] == PTRACE_POKEUSER
- ) {
- for (x = struct_user_offsets; x->str; x++) {
- if (x->val >= addr)
- break;
- }
- if (!x->str)
- printaddr(addr);
- else if (x->val > addr && x != struct_user_offsets) {
- x--;
- tprintf("%s + %ld", x->str, addr - x->val);
+ /* request */
+ printxval64(ptrace_cmds, request, "PTRACE_???");
+
+ if (request == PTRACE_TRACEME) {
+ /* pid, addr, and data are ignored. */
+ return RVAL_DECODED;
+ }
+
+ /* pid */
+ tprintf(", %d", pid);
+
+ /* addr */
+ switch (request) {
+ case PTRACE_ATTACH:
+ case PTRACE_INTERRUPT:
+ case PTRACE_KILL:
+ case PTRACE_LISTEN:
+ /* addr and data are ignored */
+ return RVAL_DECODED;
+ case PTRACE_PEEKUSER:
+ case PTRACE_POKEUSER:
+ tprints(", ");
+ print_user_offset_addr(addr);
+ break;
+ case PTRACE_GETREGSET:
+ case PTRACE_SETREGSET:
+ tprints(", ");
+ printxval(nt_descriptor_types, addr, "NT_???");
+ break;
+ case PTRACE_GETSIGMASK:
+ case PTRACE_SETSIGMASK:
+ case PTRACE_SECCOMP_GET_FILTER:
+ tprintf(", %" PRI_klu, addr);
+ break;
+ case PTRACE_PEEKSIGINFO: {
+ tprints(", ");
+ struct {
+ uint64_t off;
+ uint32_t flags;
+ uint32_t nr;
+ } psi;
+ if (umove_or_printaddr(tcp, addr, &psi)) {
+ tprints(", ");
+ printaddr(data);
+ return RVAL_DECODED;
}
- else
- tprints(x->str);
- } else
- if (tcp->u_arg[0] == PTRACE_GETREGSET
- || tcp->u_arg[0] == PTRACE_SETREGSET)
- printxval(nt_descriptor_types, tcp->u_arg[2], "NT_???");
- else
+ tprintf("{off=%" PRIu64 ", flags=", psi.off);
+ printflags(ptrace_peeksiginfo_flags, psi.flags,
+ "PTRACE_PEEKSIGINFO_???");
+ tprintf(", nr=%u}", psi.nr);
+ break;
+ }
+ default:
+ tprints(", ");
printaddr(addr);
- tprints(", ");
+ }
- switch (tcp->u_arg[0]) {
-#ifndef IA64
+# if defined IA64 || defined SPARC || defined SPARC64
+ switch (request) {
+# ifdef IA64
case PTRACE_PEEKDATA:
case PTRACE_PEEKTEXT:
case PTRACE_PEEKUSER:
- break;
-#endif
+ /* data is ignored */
+ return RVAL_DECODED | RVAL_HEX;
+# endif /* IA64 */
+# if defined SPARC || defined SPARC64
+ case PTRACE_GETREGS:
+ case PTRACE_SETREGS:
+ case PTRACE_GETFPREGS:
+ case PTRACE_SETFPREGS:
+ /* data is ignored */
+ return RVAL_DECODED;
+# endif /* SPARC || SPARC64 */
+ }
+# endif /* IA64 || SPARC || SPARC64 */
+
+ tprints(", ");
+
+ /* data */
+ switch (request) {
case PTRACE_CONT:
- case PTRACE_SINGLESTEP:
- case PTRACE_SYSCALL:
case PTRACE_DETACH:
- printsignal(tcp->u_arg[3]);
+ case PTRACE_SYSCALL:
+#ifdef PTRACE_SINGLESTEP
+ case PTRACE_SINGLESTEP:
+#endif
+#ifdef PTRACE_SINGLEBLOCK
+ case PTRACE_SINGLEBLOCK:
+#endif
+#ifdef PTRACE_SYSEMU
+ case PTRACE_SYSEMU:
+#endif
+#ifdef PTRACE_SYSEMU_SINGLESTEP
+ case PTRACE_SYSEMU_SINGLESTEP:
+#endif
+ printsignal(data);
break;
+ case PTRACE_SEIZE:
case PTRACE_SETOPTIONS:
- printflags(ptrace_setoptions_flags, tcp->u_arg[3], "PTRACE_O_???");
+#ifdef PTRACE_OLDSETOPTIONS
+ case PTRACE_OLDSETOPTIONS:
+#endif
+ printflags64(ptrace_setoptions_flags, data, "PTRACE_O_???");
break;
- case PTRACE_SETSIGINFO: {
- MPERS_PRINTER_NAME(printsiginfo_at)(tcp, tcp->u_arg[3]);
+ case PTRACE_SETSIGINFO:
+ printsiginfo_at(tcp, data);
+ break;
+ case PTRACE_SETSIGMASK:
+ print_sigset_addr_len(tcp, data, addr);
break;
- }
case PTRACE_SETREGSET:
- tprint_iov(tcp, /*len:*/ 1, tcp->u_arg[3], /*as string:*/ 0);
+ tprint_iov(tcp, /*len:*/ 1, data, IOV_DECODE_ADDR);
break;
- case PTRACE_GETSIGINFO:
+#ifndef IA64
+ case PTRACE_PEEKDATA:
+ case PTRACE_PEEKTEXT:
+ case PTRACE_PEEKUSER:
+#endif
+ case PTRACE_GETEVENTMSG:
case PTRACE_GETREGSET:
- /* Don't print anything, do it at syscall return. */
- break;
+ case PTRACE_GETSIGINFO:
+ case PTRACE_GETSIGMASK:
+ case PTRACE_PEEKSIGINFO:
+ case PTRACE_SECCOMP_GET_FILTER:
+ if (verbose(tcp)) {
+ /* print data on exiting syscall */
+ return 0;
+ }
+ /* fall through */
default:
- printaddr(tcp->u_arg[3]);
+ printaddr(data);
break;
}
+
+ return RVAL_DECODED;
} else {
- switch (tcp->u_arg[0]) {
+ switch (request) {
+#ifndef IA64
case PTRACE_PEEKDATA:
case PTRACE_PEEKTEXT:
case PTRACE_PEEKUSER:
-#ifdef IA64
- return RVAL_HEX;
-#else
- printnum_ptr(tcp, tcp->u_arg[3]);
+ printnum_ptr(tcp, data);
break;
#endif
- case PTRACE_GETSIGINFO: {
- MPERS_PRINTER_NAME(printsiginfo_at)(tcp, tcp->u_arg[3]);
+ case PTRACE_GETEVENTMSG:
+ printnum_ulong(tcp, data);
break;
- }
case PTRACE_GETREGSET:
- tprint_iov(tcp, /*len:*/ 1, tcp->u_arg[3], /*as string:*/ 0);
+ tprint_iov(tcp, /*len:*/ 1, data, IOV_DECODE_ADDR);
+ break;
+ case PTRACE_GETSIGINFO:
+ printsiginfo_at(tcp, data);
+ break;
+ case PTRACE_GETSIGMASK:
+ print_sigset_addr_len(tcp, data, addr);
+ break;
+ case PTRACE_PEEKSIGINFO:
+ print_siginfo_array(tcp, data, tcp->u_rval);
+ break;
+ case PTRACE_SECCOMP_GET_FILTER:
+ print_seccomp_fprog(tcp, data, tcp->u_rval);
break;
}
}
projects / strace / blobdiff