Don't leak file descriptors from unavailable pack files.

diff --git a/diff.c b/diff.c
index f14288bb8a100c43c6709f658b9a9ca44832fd7f..ad476f7c689262ce54c761615eac1d82355b33f9 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -1341,10 +1341,8 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
                fd = open(s->path, O_RDONLY);
                if (fd < 0)
                        goto err_empty;
-               s->data = mmap(NULL, s->size, PROT_READ, MAP_PRIVATE, fd, 0);
+               s->data = xmmap(NULL, s->size, PROT_READ, MAP_PRIVATE, fd, 0);
                close(fd);
-               if (s->data == MAP_FAILED)
-                       goto err_empty;
                s->should_munmap = 1;
        }
        else {
@@ -1391,7 +1389,7 @@ static void prep_temp_blob(struct diff_tempfile *temp,
        fd = git_mkstemp(temp->tmp_path, TEMPFILE_PATH_LEN, ".diff_XXXXXX");
        if (fd < 0)
                die("unable to create temp-file");
-       if (write(fd, blob, size) != size)
+       if (write_in_full(fd, blob, size) != size)
                die("unable to write temp-file");
        close(fd);
        temp->name = temp->tmp_path;
@@ -2875,10 +2873,12 @@ void diff_change(struct diff_options *options,
 }
 
 void diff_unmerge(struct diff_options *options,
-                 const char *path)
+                 const char *path,
+                 unsigned mode, const unsigned char *sha1)
 {
        struct diff_filespec *one, *two;
        one = alloc_filespec(path);
        two = alloc_filespec(path);
-       diff_queue(&diff_queued_diff, one, two);
+       fill_filespec(one, sha1, mode);
+       diff_queue(&diff_queued_diff, one, two)->is_unmerged = 1;
 }