Merge commit 'remotes/fml/master'

[paraslash.git] / fd.c

diff --git a/fd.c b/fd.c
index abad80a86ce368660c1ed3b88a1c0e088488a422..48e2faf97c6d3e2bcb1616ebef04db48e2003d9e 100644 (file)
--- a/fd.c
+++ b/fd.c
@@ -15,6 +15,31 @@
 #include "para.h"
 #include "error.h"
 
 #include "para.h"
 #include "error.h"
 

+/*
+ * Write a buffer to a file descriptor, re-write on short writes.
+ *
+ * \param fd The file descriptor.
+ * \param buf The buffer to be sent.
+ * \param len The length of \a buf.
+ *
+ * \return Standard. In any case, the number of bytes that have been written is
+ * stored in \a len.
+ */
+int write_all(int fd, const char *buf, size_t *len)
+{
+       size_t total = *len;
+
+       assert(total);
+       *len = 0;
+       while (*len < total) {
+               int ret = write(fd, buf + *len, total - *len);
+               if (ret == -1)
+                       return -ERRNO_TO_PARA_ERROR(errno);
+               *len += ret;
+       }
+       return 1;
+}
+

 /**
  * Check whether a file exists.
  *
 /**
  * Check whether a file exists.
  *