/*
* Document-method: PinkTrace::StringArray.decode
* call-seq:
* PinkTrace::StringArray.decode(pid, arg, index, [[maxlen=-1], [bitness=PinkTrace::Bitness::DEFAULT]]) -> String or nil
*
* This function decodes the member of the string array pointed by the address
* +arg+. The +index+ argument specifies the index of the member in the string
* array.
*
* Note: If the string array member was NULL, this function returns nil.
*/
VALUE
pinkrb_decode_strarray(int argc, VALUE *argv, VALUE mod)
{
bool nil;
pid_t pid;
unsigned bit, ind;
long arg;
int maxlen;
char *str;
VALUE vpid, varg, vind, vmax, vbit, vret;
switch (rb_scan_args(argc, argv, "32", &vpid, &varg, &vind, &vmax, &vbit)) {
case 3:
maxlen = -1;
bit = PINKTRACE_BITNESS_DEFAULT;
break;
case 4:
maxlen = NUM2INT(vmax);
bit = PINKTRACE_BITNESS_DEFAULT;
break;
case 5:
maxlen = NUM2INT(vmax);
bit = FIX2UINT(vbit);
break;
default:
abort();
}
pid = NUM2PIDT(vpid);
arg = NUM2LONG(varg);
ind = FIX2UINT(vind);
if (maxlen < 0) {
/* Use pink_decode_string_array_member_persistent() */
errno = 0;
str = pink_decode_string_array_member_persistent(pid, bit, arg, ind);
if (!str) {
if (errno)
rb_sys_fail("pink_decode_string_array_member_persistent()");
return Qnil;
}
vret = rb_str_new2(str);
free(str);
return vret;
}
/* Use pink_decode_string_array_member() */
str = ALLOC_N(char, maxlen);
if (!pink_decode_string_array_member(pid, bit, arg, ind, str, maxlen, &nil))
rb_sys_fail("pink_decode_string_array_member()");
if (nil) {
free(str);
return Qnil;
}
vret = rb_str_new2(str);
if (str)
free(str);
return vret;
}
/*
* Document-method: PinkTrace::Trace.setup
* call-seq:
* PinkTrace::Trace.setup(pid, [options=0]) -> nil
*
* Sets the tracing options.
*
* Availability: Linux
*/
VALUE
pinkrb_trace_setup(int argc, VALUE *argv, VALUE mod)
{
#ifdef PINKTRACE_LINUX
pid_t pid;
int opts;
VALUE vpid, vopts;
switch (rb_scan_args(argc, argv, "11", &vpid, &vopts)) {
case 1:
opts = 0;
break;
case 2:
opts = NUM2INT(vopts);
break;
default:
abort();
}
pid = NUM2PIDT(vpid);
if (!pink_trace_setup(pid, opts))
rb_sys_fail("pink_trace_setup()");
return Qnil;
#else
rb_raise(rb_eNotImpError, "Not implemented");
#endif
}
/*
* Document-method: PinkTrace::Trace.cont
* call-seq:
* PinkTrace::Trace.cont(pid, [[sig=0], [addr=1]]) -> nil
*
* Restarts the stopped child process.
*
* If +sig+ argument is non-zero and not SIGSTOP, it is interpreted as the
* signal to be delivered to the child; otherwise, no signal is delivered.
* Thus, for example, the parent can control whether a signal sent to the child
* is delivered or not.
*
* On FreeBSD +addr+ is an address specifying the place where execution
* is to be resumed (a new value for the program counter), or 1 to indicate
* that execution is to pick up where it left off.
* On Linux, this argument is not used.
*/
VALUE
pinkrb_trace_cont(int argc, VALUE *argv, VALUE mod)
{
pid_t pid;
long sig, addr;
VALUE vpid, vsig, vaddr;
switch (rb_scan_args(argc, argv, "12", &vpid, &vsig, &vaddr)) {
case 1:
addr = 1;
sig = 0;
break;
case 2:
addr = 1;
sig = NUM2LONG(vsig);
break;
case 3:
addr = NUM2LONG(vaddr);
sig = NUM2LONG(vsig);
break;
default:
abort();
}
pid = NUM2PIDT(vpid);
if (!pink_trace_cont(pid, sig, (char *)addr))
rb_sys_fail("pink_trace_cont()");
return Qnil;
}
/*
* Document-method: PinkTrace::Trace.sysemu_singlestep
* call-seq:
* PinkTrace::Trace.sysemu_singlestep(pid, [sig=0]) -> nil
*
* Restarts the stopped child process PinkTrace::Trace.sysemu but also
* singlesteps if not a system call.
*
* The +sig+ argument is treated as the same way as the +sig+ argument of
* PinkTrace::Trace.cont.
*
* Availability: Linux
*/
VALUE
pinkrb_trace_sysemu_singlestep(int argc, VALUE *argv, VALUE mod)
{
#ifdef PINKTRACE_LINUX
pid_t pid;
long sig;
VALUE vpid, vsig;
switch (rb_scan_args(argc, argv, "11", &vpid, &vsig)) {
case 1:
sig = 0;
break;
case 2:
sig = NUM2LONG(vsig);
break;
default:
abort();
}
pid = NUM2PIDT(vpid);
if (!pink_trace_sysemu_singlestep(pid, sig))
rb_sys_fail("pink_trace_sysemu_singlestep()");
return Qnil;
#else
rb_raise(rb_eNotImpError, "Not implemented");
#endif
}
/*
* Document-method: PinkTrace::Trace.attach
* call-seq:
* PinkTrace::Trace.attach(pid) -> nil
*
* Attaches to the process specified in pid, making it a traced "child" of the
* calling process; the behaviour of the child is as if it had done a
* PinkTrace::Trace.me. The child is sent a SIGSTOP, but will not necessarily have
* stopped by the completion of this call; use Process.waitpid to wait for the
* child to stop.
*/
VALUE
pinkrb_trace_attach(VALUE mod, VALUE vpid)
{
pid_t pid;
pid = NUM2PIDT(vpid);
if (!pink_trace_attach(pid))
rb_sys_fail("pink_trace_attach()");
return Qnil;
}
/*
* Document-method: PinkTrace::Trace.geteventmsg
* call-seq:
* PinkTrace::Trace.geteventmsg(pid) -> fixnum
*
* Returns a message (as a <tt>fixnum</tt>) about the trace event that just
* happened, For *EXIT* event this is the child's exit status. For *FORK*,
* *VFORK*, *CLONE* and *VFORK_DONE* events this is the process ID of the new
* process.
*
* Availability: Linux
*/
VALUE
pinkrb_trace_geteventmsg(VALUE mod, VALUE vpid)
{
#ifdef PINKTRACE_LINUX
pid_t pid;
unsigned long data;
pid = NUM2PIDT(vpid);
if (!pink_trace_geteventmsg(pid, &data))
rb_sys_fail("pink_trace_geteventmsg()");
return ULONG2NUM(data);
#else
rb_raise(rb_eNotImpError, "Not implemented");
#endif
}
/*
* Document-method: PinkTrace::Trace.detach
* call-seq:
* PinkTrace::Trace.detach(pid, [sig=0]) -> nil
*
* Restarts the stopped child as for PinkTrace::Trace.cont, but first detaches
* from the process, undoing the reparenting effect of PinkTrace::Trace.attach.
*
* The +sig+ argument is treated as the same way as the +sig+ argument of
* PinkTrace::Trace.cont.
*/
VALUE
pinkrb_trace_detach(int argc, VALUE *argv, VALUE mod)
{
pid_t pid;
long sig;
VALUE vpid, vsig;
switch (rb_scan_args(argc, argv, "11", &vpid, &vsig)) {
case 1:
sig = 0;
break;
case 2:
sig = NUM2LONG(vsig);
break;
default:
abort();
}
pid = NUM2PIDT(vpid);
if (!pink_trace_detach(pid, sig))
rb_sys_fail("pink_trace_detach()");
return Qnil;
}
VALUE
rb_f_kill(int argc, const VALUE *argv)
{
#ifndef HAVE_KILLPG
#define killpg(pg, sig) kill(-(pg), (sig))
#endif
int negative = 0;
int sig;
int i;
VALUE str;
const char *s;
rb_secure(2);
rb_check_arity(argc, 2, UNLIMITED_ARGUMENTS);
switch (TYPE(argv[0])) {
case T_FIXNUM:
sig = FIX2INT(argv[0]);
break;
case T_SYMBOL:
str = rb_sym2str(argv[0]);
goto str_signal;
case T_STRING:
str = argv[0];
str_signal:
s = RSTRING_PTR(str);
if (s[0] == '-') {
negative++;
s++;
}
if (strncmp(signame_prefix, s, sizeof(signame_prefix)) == 0)
s += 3;
if ((sig = signm2signo(s)) == 0) {
long ofs = s - RSTRING_PTR(str);
if (ofs) str = rb_str_subseq(str, ofs, RSTRING_LEN(str)-ofs);
rb_raise(rb_eArgError, "unsupported name `SIG%"PRIsVALUE"'", str);
}
if (negative)
sig = -sig;
break;
default:
str = rb_check_string_type(argv[0]);
if (!NIL_P(str)) {
goto str_signal;
}
rb_raise(rb_eArgError, "bad signal type %s",
rb_obj_classname(argv[0]));
break;
}
if (argc <= 1) return INT2FIX(0);
if (sig < 0) {
sig = -sig;
for (i=1; i<argc; i++) {
if (killpg(NUM2PIDT(argv[i]), sig) < 0)
rb_sys_fail(0);
}
}
else {
const rb_pid_t self = (GET_THREAD() == GET_VM()->main_thread) ? getpid() : -1;
int wakeup = 0;
for (i=1; i<argc; i++) {
rb_pid_t pid = NUM2PIDT(argv[i]);
if ((sig != 0) && (self != -1) && (pid == self)) {
int t;
/*
* When target pid is self, many caller assume signal will be
* delivered immediately and synchronously.
*/
switch (sig) {
case SIGSEGV:
#ifdef SIGBUS
case SIGBUS:
#endif
#ifdef SIGKILL
case SIGKILL:
#endif
#ifdef SIGSTOP
case SIGSTOP:
#endif
ruby_kill(pid, sig);
break;
default:
t = signal_ignored(sig);
if (t) {
if (t < 0 && kill(pid, sig))
rb_sys_fail(0);
break;
}
signal_enque(sig);
wakeup = 1;
}
}
else if (kill(pid, sig) < 0) {
rb_sys_fail(0);
}
}
if (wakeup) {
rb_threadptr_check_signal(GET_VM()->main_thread);
}
}
rb_thread_execute_interrupts(rb_thread_current());
return INT2FIX(i-1);
}
VALUE
rb_f_kill(int argc, VALUE *argv)
{
#ifndef HAS_KILLPG
#define killpg(pg, sig) kill(-(pg), sig)
#endif
int negative = 0;
int sig;
int i;
const char *s;
rb_secure(2);
if (argc < 2)
rb_raise(rb_eArgError, "wrong number of arguments -- kill(sig, pid...)");
switch (TYPE(argv[0])) {
case T_FIXNUM:
sig = FIX2INT(argv[0]);
break;
case T_SYMBOL:
s = rb_id2name(SYM2ID(argv[0]));
if (!s) rb_raise(rb_eArgError, "bad signal");
goto str_signal;
case T_STRING:
s = RSTRING_PTR(argv[0]);
if (s[0] == '-') {
negative++;
s++;
}
str_signal:
if (strncmp("SIG", s, 3) == 0)
s += 3;
if((sig = signm2signo(s)) == 0)
rb_raise(rb_eArgError, "unsupported name `SIG%s'", s);
if (negative)
sig = -sig;
break;
default:
{
VALUE str;
str = rb_check_string_type(argv[0]);
if (!NIL_P(str)) {
s = RSTRING_PTR(str);
goto str_signal;
}
rb_raise(rb_eArgError, "bad signal type %s",
rb_obj_classname(argv[0]));
}
break;
}
if (sig < 0) {
sig = -sig;
for (i=1; i<argc; i++) {
if (killpg(NUM2PIDT(argv[i]), sig) < 0)
rb_sys_fail(0);
}
}
else {
for (i=1; i<argc; i++) {
if (kill(NUM2PIDT(argv[i]), sig) < 0)
rb_sys_fail(0);
}
}
rb_thread_polling();
return INT2FIX(i-1);
}
VALUE
rb_f_kill(VALUE self, SEL sel, int argc, VALUE *argv)
{
int negative = 0;
int sig;
int i;
int type;
const char *s = NULL;
rb_secure(2);
if (argc < 2)
rb_raise(rb_eArgError, "wrong number of arguments -- kill(sig, pid...)");
type = TYPE(argv[0]);
if (type == T_FIXNUM) {
sig = FIX2INT(argv[0]);
}
else {
if (type == T_SYMBOL) {
s = rb_sym2name(argv[0]);
if (!s)
rb_raise(rb_eArgError, "bad signal");
}
else if (type == T_STRING) {
s = RSTRING_PTR(argv[0]);
if (s[0] == '-') {
negative++;
s++;
}
}
else {
VALUE str;
str = rb_check_string_type(argv[0]);
if (!NIL_P(str)) {
s = RSTRING_PTR(str);
}
}
if (s == NULL)
rb_raise(rb_eArgError, "bad signal type %s", rb_obj_classname(argv[0]));
if (strncmp("SIG", s, 3) == 0)
s += 3;
if ((sig = signm2signo(s)) == 0)
rb_raise(rb_eArgError, "unsupported name `SIG%s'", s);
if (negative)
sig = -sig;
}
if (sig < 0) {
sig = -sig;
for (i = 1; i < argc; i++) {
if (killpg(NUM2PIDT(argv[i]), sig) < 0)
rb_sys_fail(0);
}
}
else {
for (i = 1; i < argc; i++) {
if (kill(NUM2PIDT(argv[i]), sig) < 0)
rb_sys_fail(0);
}
}
rb_thread_polling();
return INT2FIX(i - 1);
}
VALUE
rb_f_kill(int argc, VALUE *argv)
{
#ifndef HAVE_KILLPG
#define killpg(pg, sig) kill(-(pg), (sig))
#endif
int negative = 0;
int sig;
int i;
volatile VALUE str;
const char *s;
rb_secure(2);
rb_check_arity(argc, 2, UNLIMITED_ARGUMENTS);
switch (TYPE(argv[0])) {
case T_FIXNUM:
sig = FIX2INT(argv[0]);
break;
case T_SYMBOL:
s = rb_id2name(SYM2ID(argv[0]));
if (!s) rb_raise(rb_eArgError, "bad signal");
goto str_signal;
case T_STRING:
s = RSTRING_PTR(argv[0]);
str_signal:
if (s[0] == '-') {
negative++;
s++;
}
if (strncmp("SIG", s, 3) == 0)
s += 3;
if ((sig = signm2signo(s)) == 0)
rb_raise(rb_eArgError, "unsupported name `SIG%s'", s);
if (negative)
sig = -sig;
break;
default:
str = rb_check_string_type(argv[0]);
if (!NIL_P(str)) {
s = RSTRING_PTR(str);
goto str_signal;
}
rb_raise(rb_eArgError, "bad signal type %s",
rb_obj_classname(argv[0]));
break;
}
if (sig < 0) {
sig = -sig;
for (i=1; i<argc; i++) {
if (killpg(NUM2PIDT(argv[i]), sig) < 0)
rb_sys_fail(0);
}
}
else {
for (i=1; i<argc; i++) {
ruby_kill(NUM2PIDT(argv[i]), sig);
}
}
rb_thread_execute_interrupts(rb_thread_current());
return INT2FIX(i-1);
}
