[SERVER] iscsi refactor: First working version

Work towards simplifying the iscsi implementation has begun. Goals are:
- Simpler and easier to understand resource/lifecycle management of
  allocations
- Single-threaded architecture, making locking unnecessary
- Moving as many allocations as possible to the stack
- Making the call-stack more shallow for easier tracking of code flow

1 files changed, 18 insertions, 0 deletions

diff --git a/src/server/sendfile.h b/src/server/sendfile.h
new file mode 100644
index 0000000..e4cc5b7
--- /dev/null
+++ b/src/server/sendfile.h
@@ -0,0 +1,18 @@
+#ifndef SENDFILE_H_
+#define SENDFILE_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <sys/types.h>
+
+/**
+ * Platform-agnostic wrapper around sendfile, with retry logic.
+ * @param fd file to read from
+ * @param sock socket to write to
+ * @param foffset offset in file to start reading from
+ * @param bytes number of bytes to read/send
+ * @return true on success
+ */
+bool sendfile_all(int fd, int sock, off_t foffset, size_t bytes);
+
+#endif
\ No newline at end of file