lib: fix eof() on Linux

Linux, and probably others, will return -1 + EOF instead of 0. Convert the former to the latter to simplify things. Signed-off-by: Kyle Evans <[email protected]>
kevans91 · Feb 9, 2024 · 00c64b3 · 00c64b3
1 parent 771e768
commit 00c64b3
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/lib/core/orch_lua.c b/lib/core/orch_lua.c
@@ -507,6 +507,14 @@ orchlua_process_read(lua_State *L)
 
 		/* Read it */
 		readsz = read(fd, buf, sizeof(buf));
+
+		/*
+		 * Some platforms will return `0` when the slave side of a pty
+		 * has gone away, while others will return -1 + EIO.  Convert
+		 * the latter to the former.
+		 */
+		if (readsz == -1 && errno == EIO)
+			readsz = 0;
 		if (readsz < 0) {
 			int err = errno;