1 files changed, 23 insertions, 0 deletions

diff --git a/readclose.c b/readclose.c
new file mode 100644
index 0000000..9d83007
--- /dev/null
+++ b/readclose.c
@@ -0,0 +1,23 @@
+/* Public domain. */
+
+#include <unistd.h>
+#include "error.h"
+#include "readclose.h"
+
+int readclose_append(int fd,stralloc *sa,unsigned int bufsize)
+{
+  int r;
+  for (;;) {
+    if (!stralloc_readyplus(sa,bufsize)) { close(fd); return -1; }
+    r = read(fd,sa->s + sa->len,bufsize);
+    if (r == -1) if (errno == error_intr) continue;
+    if (r <= 0) { close(fd); return r; }
+    sa->len += r;
+  }
+}
+
+int readclose(int fd,stralloc *sa,unsigned int bufsize)
+{
+  if (!stralloc_copys(sa,"")) { close(fd); return -1; }
+  return readclose_append(fd,sa,bufsize);
+}