copy.c: copy_fd - correctly report write errors

Previously, the errno could have been lost due to an intervening
close() call.

This patch also contains minor cosmetic changes.

Signed-off-by: Ariel Badichi <abadichi@bezeqint.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/copy.c b/copy.c
index afc4fbf41405d42d2751ea35ec7a9a32f8df6274..e54d15aced7595ccb11423b0de121db9051ad1f3 100644 (file)
--- a/copy.c
+++ b/copy.c
@@ -9,8 +9,7 @@ int copy_fd(int ifd, int ofd)
                if (!len)
                        break;
                if (len < 0) {
-                       int read_error;
-                       read_error = errno;
+                       int read_error = errno;
                        close(ifd);
                        return error("copy-fd: read returned %s",
                                     strerror(read_error));
@@ -25,9 +24,10 @@ int copy_fd(int ifd, int ofd)
                                close(ifd);
                                return error("copy-fd: write returned 0");
                        } else {
+                               int write_error = errno;
                                close(ifd);
                                return error("copy-fd: write returned %s",
-                                            strerror(errno));
+                                            strerror(write_error));
                        }
                }
        }
@@ -48,7 +48,7 @@ int copy_file(const char *dst, const char *src, int mode)
        }
        status = copy_fd(fdi, fdo);
        if (close(fdo) != 0)
-               return error("%s: write error: %s", dst, strerror(errno));
+               return error("%s: close error: %s", dst, strerror(errno));
 
        if (!status && adjust_shared_perm(dst))
                return -1;