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-rw-r--r--fs/sysv/file.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/fs/sysv/file.c b/fs/sysv/file.c
new file mode 100644
index 0000000..da69abc
--- /dev/null
+++ b/fs/sysv/file.c
@@ -0,0 +1,49 @@
+/*
+ * linux/fs/sysv/file.c
+ *
+ * minix/file.c
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * coh/file.c
+ * Copyright (C) 1993 Pascal Haible, Bruno Haible
+ *
+ * sysv/file.c
+ * Copyright (C) 1993 Bruno Haible
+ *
+ * SystemV/Coherent regular file handling primitives
+ */
+
+#include "sysv.h"
+
+/*
+ * We have mostly NULLs here: the current defaults are OK for
+ * the coh filesystem.
+ */
+struct file_operations sysv_file_operations = {
+ .llseek = generic_file_llseek,
+ .read = generic_file_read,
+ .write = generic_file_write,
+ .mmap = generic_file_mmap,
+ .fsync = sysv_sync_file,
+ .sendfile = generic_file_sendfile,
+};
+
+struct inode_operations sysv_file_inode_operations = {
+ .truncate = sysv_truncate,
+ .getattr = sysv_getattr,
+};
+
+int sysv_sync_file(struct file * file, struct dentry *dentry, int datasync)
+{
+ struct inode *inode = dentry->d_inode;
+ int err;
+
+ err = sync_mapping_buffers(inode->i_mapping);
+ if (!(inode->i_state & I_DIRTY))
+ return err;
+ if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
+ return err;
+
+ err |= sysv_sync_inode(inode);
+ return err ? -EIO : 0;
+}
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