fix lstat location

Author: calccrypto

src/parallel_find.c

@@ -355,7 +355,8 @@ static int processdir(QPTPool_ctx_t *ctx, void *data) {
 
     DIR *dir = opendir(work->name);
     if (!dir) {
-        fprintf(stderr, "Error: Could not open directory \"%s\"\n", work->name);
+        const int err = errno;
+        fprintf(stderr, "Error: Could not open directory \"%s\": %s (%d)\n", work->name, strerror(err), err);
         rc = 1;
     }
     else {

src/parallel_traversal.c

@@ -73,6 +73,8 @@ OF SUCH DAMAGE.
 #include "utils.h"
 
 struct PoolArgs {
+    int lstat_first_file;
+
     sll_t *queue;
     void (*enqueue)(sll_t *sll, void *data);
 
@@ -93,34 +95,38 @@ int processdir(struct PoolArgs *pa, char *path) {
 
     const size_t path_len = strlen(path);
 
-    /* int count = 0; */
+    int count = 0;
 
     struct dirent *entry = NULL;
     while ((entry = readdir(dir))) {
-        if (entry->d_type == DT_DIR) {
-            const size_t entry_len = strlen(entry->d_name);
+        const size_t entry_len = strlen(entry->d_name);
 
-            if (((entry_len == 1) && !strncmp(entry->d_name, ".",  1)) ||
-                ((entry_len == 2) && !strncmp(entry->d_name, "..", 2))) {
-                continue;
-            }
-
-            const size_t subdir_len = path_len + 1 + entry_len;
-            char *cp = malloc(subdir_len + 1);
-            SNFORMAT_S(cp, subdir_len + 1, 3,
-                       path, path_len,
-                       "/", (size_t) 1,
-                       entry->d_name, entry_len);
+        if (((entry_len == 1) && !strncmp(entry->d_name, ".",  1)) ||
+            ((entry_len == 2) && !strncmp(entry->d_name, "..", 2))) {
+            continue;
+        }
 
-            /* if (count == 0) { */
-            /*     struct stat st; */
-            /*     lstat(cp, &st); */
-            /*     count++; */
-            /* } */
+        const size_t subdir_len = path_len + 1 + entry_len;
+        char *cp = malloc(subdir_len + 1);
+        SNFORMAT_S(cp, subdir_len + 1, 3,
+                   path, path_len,
+                   "/", (size_t) 1,
+                   entry->d_name, entry_len);
 
+        if (entry->d_type == DT_DIR) {
             pa->enqueue(pa->queue, cp);
         }
         else {
+            if (pa->lstat_first_file) {
+                if (count == 0) {
+                    struct stat st;
+                    lstat(cp, &st);
+                    count = 1;
+                }
+            }
+
+            free(cp);
+
             pa->nondirs++;
         }
     }
@@ -132,7 +138,8 @@ int processdir(struct PoolArgs *pa, char *path) {
 }
 
 static void sub_help(void) {
-   printf("<b|d>             breadth/depth first traversal");
+   printf("<b|d>             breadth/depth first traversal\n");
+   printf("<0|1>             whether or not to lstat the first file encountered by readdir\n");
    printf("dir...            walk one or more trees\n");
    printf("\n");
 }
@@ -145,7 +152,7 @@ int main(int argc, char *argv[]) {
     };
 
     struct input in;
-    process_args_and_maybe_exit(options, 2, "<b|d> dir...", &in);
+    process_args_and_maybe_exit(options, 2, "<b|d> <lstat-first-file> dir...", &in);
 
     const char *pos0 = argv[idx++];
     if (!strlen(pos0)) {
@@ -154,10 +161,13 @@ int main(int argc, char *argv[]) {
         return EXIT_FAILURE;
     }
 
+    const char *pos1 = argv[idx++];
+
     sll_t queue;
     sll_init(&queue);
 
     struct PoolArgs pa = {
+        .lstat_first_file = !!(pos1[0] - '0'),
         .queue = &queue,
         .enqueue = NULL,
         .dirs = 0,