Propagate cache error internal to refresh_cache() via parameter.

The function refresh_cache() is the only user of cache_errno
that switches its behaviour based on what internal function
refresh_cache_entry() finds; pass the error status back in a
parameter passed down to it, to get rid of the global variable
cache_errno.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/read-cache.c b/read-cache.c
index 8a7506d909421479eee30517ab3f3963c67cefd9..747b50a99a5009e64594fe4e8da11c827a8db336 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -24,8 +24,6 @@ unsigned int active_nr, active_alloc, active_cache_changed;
 
 struct cache_tree *active_cache_tree;
 
-static int cache_errno;
-
 static void *cache_mmap;
 static size_t cache_mmap_size;
 
@@ -643,14 +641,15 @@ int add_cache_entry(struct cache_entry *ce, int option)
  * For example, you'd want to do this after doing a "git-read-tree",
  * to link up the stat cache details with the proper files.
  */
-struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
+static struct cache_entry *refresh_cache_ent(struct cache_entry *ce, int really, int *err)
 {
        struct stat st;
        struct cache_entry *updated;
        int changed, size;
 
        if (lstat(ce->name, &st) < 0) {
-               cache_errno = errno;
+               if (err)
+                       *err = errno;
                return NULL;
        }
 
@@ -664,7 +663,8 @@ struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
        }
 
        if (ce_modified(ce, &st, really)) {
-               cache_errno = EINVAL;
+               if (err)
+                       *err = EINVAL;
                return NULL;
        }
 
@@ -696,6 +696,8 @@ int refresh_cache(unsigned int flags)
 
        for (i = 0; i < active_nr; i++) {
                struct cache_entry *ce, *new;
+               int cache_errno = 0;
+
                ce = active_cache[i];
                if (ce_stage(ce)) {
                        while ((i < active_nr) &&
@@ -709,7 +711,7 @@ int refresh_cache(unsigned int flags)
                        continue;
                }
 
-               new = refresh_cache_entry(ce, really);
+               new = refresh_cache_ent(ce, really, &cache_errno);
                if (new == ce)
                        continue;
                if (!new) {
@@ -737,6 +739,11 @@ int refresh_cache(unsigned int flags)
        return has_errors;
 }
 
+struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
+{
+       return refresh_cache_ent(ce, really, NULL);
+}
+
 static int verify_hdr(struct cache_header *hdr, unsigned long size)
 {
        SHA_CTX c;