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[git.git] / pkt-line.c

diff --git a/pkt-line.c b/pkt-line.c
index bb3bab05cd203e114b24b778cb5f55218abdec95..355546a1ad844492234dc7ee91528c525af5610a 100644 (file)
--- a/pkt-line.c
+++ b/pkt-line.c
@@ -5,7 +5,7 @@
  * Write a packetized stream, where each line is preceded by
  * its length (including the header) as a 4-byte hex number.
  * A length of 'zero' means end of stream (and a length of 1-3
- * would be an error). 
+ * would be an error).
  *
  * This is all pretty stupid, but we use this packetized line
  * format to make a streaming format possible without ever
@@ -16,12 +16,13 @@
  * The writing side could use stdio, but since the reading
  * side can't, we stay with pure read/write interfaces.
  */
-static void safe_write(int fd, const void *buf, unsigned n)
+ssize_t safe_write(int fd, const void *buf, ssize_t n)
 {
+       ssize_t nn = n;
        while (n) {
                int ret = xwrite(fd, buf, n);
                if (ret > 0) {
-                       buf += ret;
+                       buf = (char *) buf + ret;
                        n -= ret;
                        continue;
                }
@@ -29,6 +30,7 @@ static void safe_write(int fd, const void *buf, unsigned n)
                        die("write error (disk full?)");
                die("write error (%s)", strerror(errno));
        }
+       return nn;
 }
 
 /*
@@ -63,14 +65,14 @@ void packet_write(int fd, const char *fmt, ...)
 
 static void safe_read(int fd, void *buffer, unsigned size)
 {
-       int n = 0;
+       size_t n = 0;
 
        while (n < size) {
-               int ret = xread(fd, buffer + n, size - n);
+               ssize_t ret = xread(fd, (char *) buffer + n, size - n);
                if (ret < 0)
                        die("read error (%s)", strerror(errno));
                if (!ret)
-                       die("unexpected EOF");
+                       die("The remote end hung up unexpectedly");
                n += ret;
        }
 }