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-rw-r--r--util.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/util.h b/util.h
index ca90494..7293d50 100644
--- a/util.h
+++ b/util.h
@@ -225,4 +225,24 @@ int bfs_major(dev_t dev);
*/
int bfs_minor(dev_t dev);
+/**
+ * A safe version of read() that handles interrupted system calls.
+ */
+ssize_t safe_read(int fd, void *buf, size_t nbytes);
+
+/**
+ * A safe version of read() that handles interrupted system calls and partial reads.
+ */
+ssize_t safe_read_all(int fd, void *buf, size_t nbytes);
+
+/**
+ * A safe version of write() that handles interrupted system calls.
+ */
+ssize_t safe_write(int fd, const void *buf, size_t nbytes);
+
+/**
+ * A safe version of write() that handles interrupted system calls and partial writes.
+ */
+ssize_t safe_write_all(int fd, const void *buf, size_t nbytes);
+
#endif // BFS_UTIL_H