static int __read(struct r_io_t *io, RIODesc *fd, ut8 *buf, int len) {
ut64 addr = io->off;
if (!fd || !fd->data)
return -1;
memset (buf, '\xff', len); // TODO: only memset the non-readed bytes
return debug_os_read_at (RIOPTRACE_PID (fd), (ut32*)buf, len, addr);
}
static int __read(RIO *io, RIODesc *desc, ut8 *buf, int len) {
int fd;
ut64 addr = io->off;
if (!desc || !desc->data)
return -1;
memset (buf, '\xff', len); // TODO: only memset the non-readed bytes
fd = RIOPTRACE_FD (desc);
if (fd != -1) {
lseek (fd, addr, SEEK_SET);
return read (fd, buf, len);
}
return debug_os_read_at (RIOPTRACE_PID (desc), (ut32*)buf, len, addr);
}
static int __read(RIO *io, RIODesc *desc, ut8 *buf, int len) {
int ret, fd;
ut64 addr = io->off;
if (!desc || !desc->data)
return -1;
memset (buf, '\xff', len); // TODO: only memset the non-readed bytes
fd = RIOPTRACE_FD (desc);
if (fd != -1) {
ret = lseek (fd, addr, SEEK_SET);
if (ret < 0) return -1;
ret = read (fd, buf, len);
// Workaround for the buggy Debian Wheeze's /proc/pid/mem
if (ret != -1) return ret;
}
return debug_os_read_at (RIOPTRACE_PID (desc), (ut32*)buf, len, addr);
}
// XXX: fill buffer with 0xff ?
int debug_fd_read_at(pid_t pid, u8 *buf, int length, ut64 addr)
{
int len;
fdio_enabled = 0;
if (bufaddr == 0)
bufaddr = alloc_page(1024*32); // 32K
if (bufaddr == 0) {
eprintf("null addr\n");
fdio_enabled = 1;
return -1;
}
debug_fd_seek(pid, fdio_fd, addr, SEEK_SET);
len = debug_fd_read(pid, fdio_fd, bufaddr, length);
debug_os_read_at(pid, buf, len, bufaddr);
fdio_enabled = 1;
return len;
}
static int __system(RIO *io, RIODesc *fd, const char *cmd) {
RIOPtrace *iop = (RIOPtrace*)fd->data;
//printf("ptrace io command (%s)\n", cmd);
/* XXX ugly hack for testing purposes */
if (!strcmp (cmd, "mem")) {
char b[128];
int ret = debug_os_read_at (iop->pid, (ut32*)b, 128, 0x8048500);
printf ("ret = %d , pid = %d\n", ret, iop->pid);
printf ("%x %x %x %x\n", b[0], b[1], b[2], b[3]);
} else
if (!strcmp (cmd, "pid")) {
int pid = atoi (cmd+4);
if (pid != 0)
iop->pid = iop->tid = pid;
io->printf ("%d\n", iop->pid);
return pid;
} else eprintf ("Try: '=!pid'\n");
return R_TRUE;
}
static int __read(struct r_io_t *io, RIODesc *fd, ut8 *buf, int len) {
ut64 addr = io->off;
memset (buf, '\xff', len); // TODO: only memset the non-readed bytes
return debug_os_read_at (RIOPROCPID_FD (fd), buf, len, addr);
}
static int __read(struct r_io_t *io, RIODesc *fd, ut8 *buf, int len) {
memset (buf, '\xff', len); // TODO: only memset the non-readed bytes
return debug_os_read_at (fd->data, buf, len, io->off);
}