add tests for rebasing root

diff --git a/read-cache.c b/read-cache.c
index 48d87e83ed062f566800256560272bbadc6492d7..04ed561bfe7dd8fbf1988190f95eb1cc3530ff58 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -197,21 +197,25 @@ static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
        }
        if (ce->ce_mtime.sec != (unsigned int)st->st_mtime)
                changed |= MTIME_CHANGED;
-       if (trust_ctime && ce->ce_ctime.sec != (unsigned int)st->st_ctime)
+       if (trust_ctime && check_stat &&
+           ce->ce_ctime.sec != (unsigned int)st->st_ctime)
                changed |= CTIME_CHANGED;
 
 #ifdef USE_NSEC
-       if (ce->ce_mtime.nsec != ST_MTIME_NSEC(*st))
+       if (check_stat && ce->ce_mtime.nsec != ST_MTIME_NSEC(*st))
                changed |= MTIME_CHANGED;
-       if (trust_ctime && ce->ce_ctime.nsec != ST_CTIME_NSEC(*st))
+       if (trust_ctime && check_stat &&
+           ce->ce_ctime.nsec != ST_CTIME_NSEC(*st))
                changed |= CTIME_CHANGED;
 #endif
 
-       if (ce->ce_uid != (unsigned int) st->st_uid ||
-           ce->ce_gid != (unsigned int) st->st_gid)
-               changed |= OWNER_CHANGED;
-       if (ce->ce_ino != (unsigned int) st->st_ino)
-               changed |= INODE_CHANGED;
+       if (check_stat) {
+               if (ce->ce_uid != (unsigned int) st->st_uid ||
+                       ce->ce_gid != (unsigned int) st->st_gid)
+                       changed |= OWNER_CHANGED;
+               if (ce->ce_ino != (unsigned int) st->st_ino)
+                       changed |= INODE_CHANGED;
+       }
 
 #ifdef USE_STDEV
        /*
@@ -219,8 +223,8 @@ static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
         * clients will have different views of what "device"
         * the filesystem is on
         */
-       if (ce->ce_dev != (unsigned int) st->st_dev)
-               changed |= INODE_CHANGED;
+       if (check_stat && ce->ce_dev != (unsigned int) st->st_dev)
+                       changed |= INODE_CHANGED;
 #endif
 
        if (ce->ce_size != (unsigned int) st->st_size)
@@ -1896,7 +1900,7 @@ int index_name_is_other(const struct index_state *istate, const char *name,
        return 1;
 }
 
-void *read_blob_data_from_index(struct index_state *istate, const char *path)
+void *read_blob_data_from_index(struct index_state *istate, const char *path, unsigned long *size)
 {
        int pos, len;
        unsigned long sz;
@@ -1925,5 +1929,7 @@ void *read_blob_data_from_index(struct index_state *istate, const char *path)
                free(data);
                return NULL;
        }
+       if (size)
+               *size = sz;
        return data;
 }