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-rw-r--r--fs/sysv/file.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/sysv/file.c b/fs/sysv/file.c
index 750cc22..0a65939 100644
--- 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,
};
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