do_coredump: fix the "ispipe" error check

[~andy/linux] / fs / sysv / file.c

diff --git a/fs/sysv/file.c b/fs/sysv/file.c
index 750cc22349bd67b509da4985f631321a4962f6b3..0a65939508e964f609b6e5ab7432cc2e177a45ad 100644 (file)
--- a/fs/sysv/file.c
+++ b/fs/sysv/file.c
@@ -30,7 +30,29 @@ const struct file_operations sysv_file_operations = {
        .splice_read    = generic_file_splice_read,
 };
 
+static int sysv_setattr(struct dentry *dentry, struct iattr *attr)
+{
+       struct inode *inode = dentry->d_inode;
+       int error;
+
+       error = inode_change_ok(inode, attr);
+       if (error)
+               return error;
+
+       if ((attr->ia_valid & ATTR_SIZE) &&
+           attr->ia_size != i_size_read(inode)) {
+               error = vmtruncate(inode, attr->ia_size);
+               if (error)
+                       return error;
+       }
+
+       setattr_copy(inode, attr);
+       mark_inode_dirty(inode);
+       return 0;
+}
+
 const struct inode_operations sysv_file_inode_operations = {
        .truncate       = sysv_truncate,
+       .setattr        = sysv_setattr,
        .getattr        = sysv_getattr,
 };