bool rargs(char **userspace_argv, struct s_argblk * argbuf)
{
char *ptr; /* Address of base of arg strings in user space */
char *up = (char *)userspace_argv;
uint8_t c;
uint8_t *bufp;
argbuf->a_argc = 0; /* Store argc in argbuf */
bufp = argbuf->a_buf;
while ((ptr = (char *) ugetp(up)) != NULL) {
up += sizeof(uptr_t);
++(argbuf->a_argc); /* Store argc in argbuf. */
do {
*bufp++ = c = ugetc(ptr++);
if (bufp > argbuf->a_buf + 500) {
udata.u_error = E2BIG;
return true; // failed
}
}
while (c);
}
argbuf->a_arglen = bufp - (uint8_t *)argbuf->a_buf; /*Store total string size. */
return false; // success
}
bool rargs(char **userspace_argv, struct s_argblk * argbuf)
{
char *ptr; /* Address of base of arg strings in user space */
uint8_t c;
uint8_t *bufp;
int err;
void *up = (void *)userspace_argv;
argbuf->a_argc = 0; /* Store argc in argbuf */
bufp = argbuf->a_buf;
while ((ptr = (char *) ugetp(up, &err)) != NULL) {
up += sizeof(uptr_t);
if (err)
return true;
++(argbuf->a_argc); /* Store argc in argbuf. */
do {
*bufp++ = c = ugetc(ptr++);
if (bufp > argbuf->a_buf + ARGBUF_SIZE - 12) {
udata.u_error = E2BIG;
return true; // failed
}
}
while (c);
}
/*Store total string size. */
argbuf->a_arglen = bufp - (uint8_t *)argbuf->a_buf;
/* Align */
if (argbuf->a_arglen & 1)
argbuf->a_arglen++ ;
/* Success */
return false;
}
