+static int read_entries(struct exfat* ef, struct exfat_node* dir,
+ struct exfat_entry* entries, int n, off_t offset)
+{
+ ssize_t size;
+
+ if (!(dir->attrib & EXFAT_ATTRIB_DIR))
+ exfat_bug("attempted to read entries from a file");
+
+ size = exfat_generic_pread(ef, dir, entries,
+ sizeof(struct exfat_entry[n]), offset);
+ if (size == sizeof(struct exfat_entry[n]))
+ return 0; /* success */
+ if (size == 0)
+ return -ENOENT;
+ if (size < 0)
+ return -EIO;
+ exfat_error("read %zd bytes instead of %zu bytes", size,
+ sizeof(struct exfat_entry[n]));
+ return -EIO;
+}
+
+static int write_entries(struct exfat* ef, struct exfat_node* dir,
+ const struct exfat_entry* entries, int n, off_t offset)
+{
+ ssize_t size;
+
+ if (!(dir->attrib & EXFAT_ATTRIB_DIR))
+ exfat_bug("attempted to write entries into a file");
+
+ size = exfat_generic_pwrite(ef, dir, entries,
+ sizeof(struct exfat_entry[n]), offset);
+ if (size == sizeof(struct exfat_entry[n]))
+ return 0; /* success */
+ if (size < 0)
+ return -EIO;
+ exfat_error("wrote %zd bytes instead of %zu bytes", size,
+ sizeof(struct exfat_entry[n]));
+ return -EIO;
+}
+