patch-2.3.31 linux/fs/open.c

• Lines: 68
• Date: Tue Dec 7 15:32:51 1999
• Orig file: v2.3.30/linux/fs/open.c
• Orig date: Tue Dec 7 09:32:48 1999

diff -u --recursive --new-file v2.3.30/linux/fs/open.c linux/fs/open.c
@@ -79,13 +79,18 @@
 	return error;
 }
 
-asmlinkage long sys_truncate(const char * path, unsigned long length)
+static inline long do_sys_truncate(const char * path, loff_t length)
 {
 	struct dentry * dentry;
 	struct inode * inode;
 	int error;
 
 	lock_kernel();
+
+	error = -EINVAL;
+	if (length < 0)	/* sorry, but loff_t says... */
+		goto out;
+
 	dentry = namei(path);
 
 	error = PTR_ERR(dentry);
@@ -128,13 +133,21 @@
 	return error;
 }
 
-asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length)
+asmlinkage long sys_truncate(const char * path, unsigned long length)
+{
+	return do_sys_truncate(path, length);
+}
+
+static inline long do_sys_ftruncate(unsigned int fd, loff_t length)
 {
 	struct inode * inode;
 	struct dentry *dentry;
 	struct file * file;
 	int error;
 
+	error = -EINVAL;
+	if (length < 0)
+		goto out;
 	error = -EBADF;
 	file = fget(fd);
 	if (!file)
@@ -162,6 +175,24 @@
 out:
 	return error;
 }
+
+asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length)
+{
+	return do_sys_ftruncate(fd, length);
+}
+
+/* LFS versions of truncate are only needed on 32 bit machines */
+#if BITS_PER_LONG == 32
+asmlinkage long sys_truncate64(const char * path, loff_t length)
+{
+	return do_sys_truncate(path, length);
+}
+
+asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length)
+{
+	return do_sys_ftruncate(fd, length);
+}
+#endif
 
 #if !(defined(__alpha__) || defined(__ia64__))