- \
- if ( ! xalloc_oversized (nr_words + n, sizeof (struct word))) { \
- struct word *w; \
- w = realloc (words, sizeof (struct word) * (nr_words + n)); \
- \
- if (w == NULL) { \
- free_words (words, nr_words); \
- words = NULL; \
- nr_words = 0; \
- } else { \
- words = w; \
- for (i = 0; i < n; ++i) { \
- words[nr_words].name = strs[i]; \
- words[nr_words].is_dir = 0; \
- nr_words++; \
- } \
- } \
- free (strs); \
+ \
+ if ( n > 0 && ! xalloc_oversized (nr_words + n, sizeof (struct word))) { \
+ struct word *w; \
+ w = realloc (words, sizeof (struct word) * (nr_words + n)); \
+ \
+ if (w == NULL) { \
+ free_words (words, nr_words); \
+ words = NULL; \
+ nr_words = 0; \
+ } else { \
+ words = w; \
+ for (i = 0; i < n; ++i) { \
+ words[nr_words].name = strs[i]; \
+ words[nr_words].is_dir = 0; \
+ nr_words++; \
+ } \
+ } \
- dirents = guestfs_readdir (g, dir);
-
- /* Prepend directory to names before adding them to the list
- * of words.
- */
- if (dirents) {
- size_t i;
-
- for (i = 0; i < dirents->len; ++i) {
- int err;
-
- if (strcmp (dirents->val[i].name, ".") != 0 &&
- strcmp (dirents->val[i].name, "..") != 0) {
- if (strcmp (dir, "/") == 0)
- err = asprintf (&p, "/%s", dirents->val[i].name);
- else
- err = asprintf (&p, "%s/%s", dir, dirents->val[i].name);
- if (err >= 0) {
- if (!xalloc_oversized (nr_words+1, sizeof (struct word))) {
- struct word *w;
-
- w = realloc (words, sizeof (struct word) * (nr_words+1));
- if (w == NULL) {
- free_words (words, nr_words);
- words = NULL;
- nr_words = 0;
- }
- else {
- words = w;
- words[nr_words].name = p;
- words[nr_words].is_dir = dirents->val[i].ftyp == 'd';
- nr_words++;
- }
- }
- }
- }
- }
-
- guestfs_free_dirent_list (dirents);
- }
+ dirents = guestfs_readdir (g, dir);
+
+ /* Prepend directory to names before adding them to the list
+ * of words.
+ */
+ if (dirents) {
+ size_t i;
+
+ for (i = 0; i < dirents->len; ++i) {
+ int err;
+
+ if (strcmp (dirents->val[i].name, ".") != 0 &&
+ strcmp (dirents->val[i].name, "..") != 0) {
+ if (strcmp (dir, "/") == 0)
+ err = asprintf (&p, "/%s", dirents->val[i].name);
+ else
+ err = asprintf (&p, "%s/%s", dir, dirents->val[i].name);
+ if (err >= 0) {
+ if (!xalloc_oversized (nr_words+1, sizeof (struct word))) {
+ struct word *w;
+
+ w = realloc (words, sizeof (struct word) * (nr_words+1));
+ if (w == NULL) {
+ free_words (words, nr_words);
+ words = NULL;
+ nr_words = 0;
+ }
+ else {
+ words = w;
+ words[nr_words].name = p;
+ words[nr_words].is_dir = dirents->val[i].ftyp == 'd';
+ nr_words++;
+ }
+ }
+ }
+ }
+ }
+
+ guestfs_free_dirent_list (dirents);
+ }