lstat_cache(): print a warning if doing ping-pong between cache types

diff --git a/entry.c b/entry.c
index cc8f0c607729e4e4c5cde9e52dc0af0735fb26ba..5daacc2fe51eada819bedea05f958fbf87f5b889 100644 (file)
--- a/entry.c
+++ b/entry.c
@@ -78,7 +78,7 @@ static int create_file(const char *path, unsigned int mode)
        return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
 }
 
-static void *read_blob_entry(struct cache_entry *ce, const char *path, unsigned long *size)
+static void *read_blob_entry(struct cache_entry *ce, unsigned long *size)
 {
        enum object_type type;
        void *new = read_sha1_file(ce->sha1, &type, size);
@@ -93,36 +93,52 @@ static void *read_blob_entry(struct cache_entry *ce, const char *path, unsigned
 
 static int write_entry(struct cache_entry *ce, char *path, const struct checkout *state, int to_tempfile)
 {
-       int fd;
-       long wrote;
-
-       switch (ce->ce_mode & S_IFMT) {
-               char *new;
-               struct strbuf buf;
-               unsigned long size;
+       unsigned int ce_mode_s_ifmt = ce->ce_mode & S_IFMT;
+       int fd, ret, fstat_done = 0;
+       char *new;
+       struct strbuf buf = STRBUF_INIT;
+       unsigned long size;
+       size_t wrote, newsize = 0;
+       struct stat st;
 
+       switch (ce_mode_s_ifmt) {
        case S_IFREG:
-               new = read_blob_entry(ce, path, &size);
+       case S_IFLNK:
+               new = read_blob_entry(ce, &size);
                if (!new)
                        return error("git checkout-index: unable to read sha1 file of %s (%s)",
                                path, sha1_to_hex(ce->sha1));
 
+               if (ce_mode_s_ifmt == S_IFLNK && has_symlinks && !to_tempfile) {
+                       ret = symlink(new, path);
+                       free(new);
+                       if (ret)
+                               return error("git checkout-index: unable to create symlink %s (%s)",
+                                            path, strerror(errno));
+                       break;
+               }
+
                /*
                 * Convert from git internal format to working tree format
                 */
-               strbuf_init(&buf, 0);
-               if (convert_to_working_tree(ce->name, new, size, &buf)) {
-                       size_t newsize = 0;
+               if (ce_mode_s_ifmt == S_IFREG &&
+                   convert_to_working_tree(ce->name, new, size, &buf)) {
                        free(new);
                        new = strbuf_detach(&buf, &newsize);
                        size = newsize;
                }
 
                if (to_tempfile) {
-                       strcpy(path, ".merge_file_XXXXXX");
+                       if (ce_mode_s_ifmt == S_IFREG)
+                               strcpy(path, ".merge_file_XXXXXX");
+                       else
+                               strcpy(path, ".merge_link_XXXXXX");
                        fd = mkstemp(path);
-               } else
+               } else if (ce_mode_s_ifmt == S_IFREG) {
                        fd = create_file(path, ce->ce_mode);
+               } else {
+                       fd = create_file(path, 0666);
+               }
                if (fd < 0) {
                        free(new);
                        return error("git checkout-index: unable to create file %s (%s)",
@@ -130,41 +146,16 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout
                }
 
                wrote = write_in_full(fd, new, size);
+               /* use fstat() only when path == ce->name */
+               if (state->refresh_cache && !to_tempfile && !state->base_dir_len) {
+                       fstat(fd, &st);
+                       fstat_done = 1;
+               }
                close(fd);
                free(new);
                if (wrote != size)
                        return error("git checkout-index: unable to write file %s", path);
                break;
-       case S_IFLNK:
-               new = read_blob_entry(ce, path, &size);
-               if (!new)
-                       return error("git checkout-index: unable to read sha1 file of %s (%s)",
-                               path, sha1_to_hex(ce->sha1));
-               if (to_tempfile || !has_symlinks) {
-                       if (to_tempfile) {
-                               strcpy(path, ".merge_link_XXXXXX");
-                               fd = mkstemp(path);
-                       } else
-                               fd = create_file(path, 0666);
-                       if (fd < 0) {
-                               free(new);
-                               return error("git checkout-index: unable to create "
-                                                "file %s (%s)", path, strerror(errno));
-                       }
-                       wrote = write_in_full(fd, new, size);
-                       close(fd);
-                       free(new);
-                       if (wrote != size)
-                               return error("git checkout-index: unable to write file %s",
-                                       path);
-               } else {
-                       wrote = symlink(new, path);
-                       free(new);
-                       if (wrote)
-                               return error("git checkout-index: unable to create "
-                                                "symlink %s (%s)", path, strerror(errno));
-               }
-               break;
        case S_IFGITLINK:
                if (to_tempfile)
                        return error("git checkout-index: cannot create temporary subproject %s", path);
@@ -176,8 +167,8 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout
        }
 
        if (state->refresh_cache) {
-               struct stat st;
-               lstat(ce->name, &st);
+               if (!fstat_done)
+                       lstat(ce->name, &st);
                fill_stat_cache_info(ce, &st);
        }
        return 0;