Implement re-exec

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/util.h b/src/util.h
index 858d972..18066fa 100644
--- a/src/util.h
+++ b/src/util.h
@@ -33,6 +33,8 @@ void* memdup(const void* src, size_t n);
 /**
  * Read an entire file
  * 
+ * Not cancelled by `EINTR`
+ * 
  * @param   fd  The file descriptor
  * @param   n   Output for the size of the file
  * @return      The read content, plus a NUL byte at
@@ -42,6 +44,20 @@ void* nread(int fd, size_t* n);
 
 
 /**
+ * Write an entire buffer to a file
+ * 
+ * Not cancelled by `EINTR`
+ * 
+ * @param   fd   The file descriptor
+ * @param   buf  The buffer which shall be written to the fail
+ * @param   n    The size of the buffer
+ * @return       The number of written bytes, less than `n`
+ *               on error, cannot exceed `n`
+ */
+size_t nwrite(int fd, const void* buf, size_t n);
+
+
+/**
  * Duplicate a file descriptor an make sure
  * the new file descriptor's index as a
  * specified minimum value