[tor-commits] [tor/master] Fix return value of tor_fd_seekend.

[nickm at torproject.org]

commit 7c61d10c6c09b32a4b8acd2553aa05c4fbc06611
Author: Nick Mathewson <nickm at torproject.org>
Date:   Wed Aug 20 13:48:17 2014 -0400

    Fix return value of tor_fd_seekend.
    
    Previously, we had documented it to return -1 or 0, when in fact
    lseek returns -1 or the new position in the file.
    
    This is harmless, since we were only checking for negative values
    when we used tor_fd_seekend.
---
 src/common/compat.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/common/compat.c b/src/common/compat.c
index eb9a70f..278e5c5 100644
--- a/src/common/compat.c
+++ b/src/common/compat.c
@@ -990,14 +990,14 @@ tor_fd_seekend(int fd)
 #ifdef _WIN32
   return _lseek(fd, 0, SEEK_END) < 0 ? -1 : 0;
 #else
-  int rc = lseek(fd, 0, SEEK_END) < 0 ? -1 : 0;
+  off_t rc = lseek(fd, 0, SEEK_END) < 0 ? -1 : 0;
 #ifdef ESPIPE
   /* If we get an error and ESPIPE, then it's a pipe or a socket of a fifo:
    * no need to worry. */
   if (rc < 0 && errno == ESPIPE)
     rc = 0;
 #endif
-  return rc;
+  return (rc < 0) ? -1 : 0;
 #endif
 }