write_shared_index(): use tempfile module

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/read-cache.c b/read-cache.c
index 96cb9a311635cd1bfb477936bd79843eb17b6a2b..89be2268cd39fc87983b2bb66597e968f76e32cd 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -5,6 +5,7 @@
  */
 #define NO_THE_INDEX_COMPATIBILITY_MACROS
 #include "cache.h"
+#include "tempfile.h"
 #include "lockfile.h"
 #include "cache-tree.h"
 #include "refs.h"
@@ -2136,54 +2137,27 @@ static int write_split_index(struct index_state *istate,
        return ret;
 }
 
-static char *temporary_sharedindex;
-
-static void remove_temporary_sharedindex(void)
-{
-       if (temporary_sharedindex) {
-               unlink_or_warn(temporary_sharedindex);
-               free(temporary_sharedindex);
-               temporary_sharedindex = NULL;
-       }
-}
-
-static void remove_temporary_sharedindex_on_signal(int signo)
-{
-       remove_temporary_sharedindex();
-       sigchain_pop(signo);
-       raise(signo);
-}
+static struct tempfile temporary_sharedindex;
 
 static int write_shared_index(struct index_state *istate,
                              struct lock_file *lock, unsigned flags)
 {
        struct split_index *si = istate->split_index;
-       static int installed_handler;
        int fd, ret;
 
-       temporary_sharedindex = git_pathdup("sharedindex_XXXXXX");
-       fd = mkstemp(temporary_sharedindex);
+       fd = mks_tempfile(&temporary_sharedindex, git_path("sharedindex_XXXXXX"));
        if (fd < 0) {
-               free(temporary_sharedindex);
-               temporary_sharedindex = NULL;
                hashclr(si->base_sha1);
                return do_write_locked_index(istate, lock, flags);
        }
-       if (!installed_handler) {
-               atexit(remove_temporary_sharedindex);
-               sigchain_push_common(remove_temporary_sharedindex_on_signal);
-       }
        move_cache_to_base_index(istate);
        ret = do_write_index(si->base, fd, 1);
-       close(fd);
        if (ret) {
-               remove_temporary_sharedindex();
+               delete_tempfile(&temporary_sharedindex);
                return ret;
        }
-       ret = rename(temporary_sharedindex,
-                    git_path("sharedindex.%s", sha1_to_hex(si->base->sha1)));
-       free(temporary_sharedindex);
-       temporary_sharedindex = NULL;
+       ret = rename_tempfile(&temporary_sharedindex,
+                             git_path("sharedindex.%s", sha1_to_hex(si->base->sha1)));
        if (!ret)
                hashcpy(si->base_sha1, si->base->sha1);
        return ret;