+int open_file(const char *name, struct com32_filedata *filedata)
+{
+ int rv;
+ struct file *file;
+ char mangled_name[FILENAME_MAX];
+
+ mangle_name(mangled_name, name);
+ rv = searchdir(mangled_name);
+
+ if (rv >= 0) {
+ file = handle_to_file(rv);
+ filedata->size = file->file_len;
+ filedata->blocklg2 = SECTOR_SHIFT(file->fs);
+ filedata->handle = rv;
+ }
+ return rv;
+}
+
+void pm_open_file(com32sys_t *regs)
+{
+ int rv;
+ struct file *file;
+ const char *name = MK_PTR(regs->es, regs->esi.w[0]);
+ char mangled_name[FILENAME_MAX];
+
+ mangle_name(mangled_name, name);
+ rv = searchdir(mangled_name);
+ if (rv < 0) {
+ regs->eflags.l |= EFLAGS_CF;
+ } else {
+ file = handle_to_file(rv);
+ regs->eflags.l &= ~EFLAGS_CF;
+ regs->eax.l = file->file_len;
+ regs->ecx.w[0] = SECTOR_SIZE(file->fs);
+ regs->esi.w[0] = rv;
+ }
+}
+
+void close_file(uint16_t handle)