patch-2.4.0-test1 linux/arch/sparc64/kernel/signal32.c

• Lines: 48
• Date: Wed May 24 18:38:26 2000
• Orig file: v2.3.99-pre9/linux/arch/sparc64/kernel/signal32.c
• Orig date: Wed Apr 26 16:34:07 2000

diff -u --recursive --new-file v2.3.99-pre9/linux/arch/sparc64/kernel/signal32.c linux/arch/sparc64/kernel/signal32.c
@@ -108,17 +108,21 @@
 	if (!access_ok (VERIFY_WRITE, to, sizeof(siginfo_t32)))
 		return -EFAULT;
 
+	/* If you change siginfo_t structure, please be sure
+	   this code is fixed accordingly.
+	   It should never copy any pad contained in the structure
+	   to avoid security leaks, but must copy the generic
+	   3 ints plus the relevant union member.
+	   This routine must convert siginfo from 64bit to 32bit as well
+	   at the same time.  */
 	err = __put_user(from->si_signo, &to->si_signo);
 	err |= __put_user(from->si_errno, &to->si_errno);
-	err |= __put_user(from->si_code, &to->si_code);
+	err |= __put_user((short)from->si_code, &to->si_code);
 	if (from->si_code < 0)
 		err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
 	else {
-		int signo = from->si_signo;
-		if (from->si_code == SI_USER || from->si_code == SI_KERNEL)
-			signo = SIGRTMIN;
-		switch (signo) {
-		case SIGCHLD:
+		switch (from->si_code >> 16) {
+		case __SI_CHLD >> 16:
 			err |= __put_user(from->si_utime, &to->si_utime);
 			err |= __put_user(from->si_stime, &to->si_stime);
 			err |= __put_user(from->si_status, &to->si_status);
@@ -126,16 +130,12 @@
 			err |= __put_user(from->si_pid, &to->si_pid);
 			err |= __put_user(from->si_uid, &to->si_uid);
 			break;
-		case SIGURG:
-		case SIGIO:
-		case SIGSEGV:
-		case SIGILL:
-		case SIGFPE:
-		case SIGBUS:
-		case SIGEMT:
+		case __SI_FAULT >> 16:
+		case __SI_POLL >> 16:
 			err |= __put_user(from->si_trapno, &to->si_trapno);
 			err |= __put_user((long)from->si_addr, &to->si_addr);
 			break;
+		/* case __SI_RT: This is not generated by the kernel as of now.  */
 		}
 	}
 	return err;