lsx: detect read errors

diff --git a/lsx.c b/lsx.c
index 57c03bf1e26736f6a121eda1609cf9bdd3335204..cb016cf1b4f490b738c2d565be0f19088aee2e76 100644 (file)
--- a/lsx.c
+++ b/lsx.c
@@ -1,5 +1,6 @@
 /* See LICENSE file for copyright and license details. */
 #include <dirent.h>
+#include <errno.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -28,14 +29,15 @@ lsx(const char *dir) {
        struct stat st;
        DIR *dp;
 
-       if(!(dp = opendir(dir))) {
+       for(dp = opendir(dir); dp && (d = readdir(dp)); errno = 0)
+               if(snprintf(buf, sizeof buf, "%s/%s", dir, d->d_name) < (int)sizeof buf
+               && access(buf, X_OK) == 0 && stat(buf, &st) == 0 && S_ISREG(st.st_mode))
+                       puts(d->d_name);
+
+       if(errno != 0) {
                status = EXIT_FAILURE;
                perror(dir);
-               return;
        }
-       while((d = readdir(dp)))
-               if(snprintf(buf, sizeof buf, "%s/%s", dir, d->d_name) < (int)sizeof buf
-               && stat(buf, &st) == 0 && S_ISREG(st.st_mode) && access(buf, X_OK) == 0)
-                       puts(d->d_name);
-       closedir(dp);
+       if(dp)
+               closedir(dp);
 }