* Licensed under the GPL
*/
-#include <setjmp.h>
#include <string.h>
#include "user_util.h"
#include "uml_uaccess.h"
#include "task.h"
#include "kern_util.h"
+#include "os.h"
+#include "longjmp.h"
int __do_copy_from_user(void *to, const void *from, int n,
void **fault_addr, void **fault_catcher)
__do_copy, &faulted);
TASK_REGS(get_current())->tt = save;
- if(!faulted) return(0);
- else return(n - (fault - (unsigned long) from));
+ if(!faulted)
+ return 0;
+ else if (fault)
+ return n - (fault - (unsigned long) from);
+ else
+ /* In case of a general protection fault, we don't have the
+ * fault address, so NULL is used instead. Pretend we didn't
+ * copy anything. */
+ return n;
}
static void __do_strncpy(void *dst, const void *src, int count)
jmp_buf jbuf;
*fault_catcher = &jbuf;
- if(sigsetjmp(jbuf, 1) == 0)
+ if(UML_SETJMP(&jbuf) == 0)
ret = strlen(str) + 1;
else ret = *faddrp - (unsigned long) str;