correct largefile support, add comments about it.

git-svn-id: svn://busybox.net/trunk/busybox@16343 69ca8d6d-28ef-0310-b511-8ec308f3f277

2 files changed, 8 insertions, 6 deletions

diff --git a/libbb/copyfd.c b/libbb/copyfd.c
index e9300a97d..87126eb72 100644
--- a/libbb/copyfd.c
+++ b/libbb/copyfd.c
@@ -21,10 +21,10 @@
 #endif
 
 
-static ssize_t bb_full_fd_action(int src_fd, int dst_fd, size_t size)
+static off_t bb_full_fd_action(int src_fd, int dst_fd, off_t size)
 {
         int status = -1;
-        size_t total = 0;
+        off_t total = 0;
         RESERVE_CONFIG_BUFFER(buffer,BUFSIZ);
 
         if (src_fd < 0) goto out;
@@ -56,11 +56,11 @@ static ssize_t bb_full_fd_action(int src_fd, int dst_fd, size_t size)
 out:
         RELEASE_CONFIG_BUFFER(buffer);
 
-        return status ? status : (ssize_t)total;
+        return status ? status : total;
 }
 
 
-int bb_copyfd_size(int fd1, int fd2, const off_t size)
+off_t bb_copyfd_size(int fd1, int fd2, off_t size)
 {
         if (size) {
                 return bb_full_fd_action(fd1, fd2, size);
@@ -68,7 +68,7 @@ int bb_copyfd_size(int fd1, int fd2, const off_t size)
         return 0;
 }
 
-int bb_copyfd_eof(int fd1, int fd2)
+off_t bb_copyfd_eof(int fd1, int fd2)
 {
         return bb_full_fd_action(fd1, fd2, 0);
 }
diff --git a/libbb/loop.c b/libbb/loop.c
index 1b296d99b..14835ec24 100644
--- a/libbb/loop.c
+++ b/libbb/loop.c
@@ -133,7 +133,9 @@ int set_loop(char **device, const char *file, unsigned long long offset)
                    without using losetup manually is problematic.)
                  */
                 } else if (strcmp(file,(char *)loopinfo.lo_file_name)
-                                        || offset!=loopinfo.lo_offset) rc = -1;
+                || offset != loopinfo.lo_offset) {
+                        rc = -1;
+                }
                 close(dfd);
 try_again:
                 if (*device) break;