patch-2.3.9 linux/arch/ppc/kernel/syscalls.c

• Lines: 26
• Date: Mon Jun 28 13:40:39 1999
• Orig file: v2.3.8/linux/arch/ppc/kernel/syscalls.c
• Orig date: Mon Jun 7 12:11:51 1999

diff -u --recursive --new-file v2.3.8/linux/arch/ppc/kernel/syscalls.c linux/arch/ppc/kernel/syscalls.c
@@ -33,6 +33,7 @@
 #include <linux/sys.h>
 #include <linux/ipc.h>
 #include <linux/utsname.h>
+#include <linux/file.h>
 
 #include <asm/uaccess.h>
 #include <asm/ipc.h>
@@ -201,12 +202,16 @@
 
 	lock_kernel();
 	if (!(flags & MAP_ANONYMOUS)) {
-		if (fd >= NR_OPEN || !(file = current->files->fd[fd]))
+		if (!(file = fget(fd)))
 			goto out;
 	}
 	
 	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+	down(&current->mm->mmap_sem);
 	ret = do_mmap(file, addr, len, prot, flags, offset);
+	up(&current->mm->mmap_sem);
+	if (file)
+		fput(file);
 out:
 	unlock_kernel();
 	return ret;