ls: check whether link is hidden

When using 'ls -L' to list the target of a symlink (or equivalent)
we must first check whether the link itself is hidden and thus
subject to special treatment by the '-a' or '-A' options.

Adds 80 bytes.

(GitHub issue #331)

1 files changed, 17 insertions, 0 deletions

diff --git a/coreutils/ls.c b/coreutils/ls.c
index d15588a13..8589c854e 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -948,6 +948,9 @@ static struct dnode **scan_one_dir(const char *path, unsigned *nfiles_p)
         struct dirent *entry;
         DIR *dir;
         unsigned i, nfiles;
+#if ENABLE_PLATFORM_MINGW32
+        struct stat statbuf;
+#endif
 
         *nfiles_p = 0;
         dir = warn_opendir(path);
@@ -976,6 +979,20 @@ static struct dnode **scan_one_dir(const char *path, unsigned *nfiles_p)
                 else
 #endif
                 fullname = concat_path_file(path, entry->d_name);
+#if ENABLE_PLATFORM_MINGW32
+                /* When showing link targets we must first check the
+                 * attributes of the link itself to see if it's hidden. */
+                if ((option_mask32 & OPT_L) && !lstat(fullname, &statbuf)) {
+                        if (((statbuf.st_attr & FILE_ATTRIBUTE_HIDDEN) &&
+                                        !(option_mask32 & (OPT_a|OPT_A))) ||
+                                (((statbuf.st_attr & HIDSYS) == HIDSYS) &&
+                                        MAX(G.a_count, G.A_count) > 1)
+                        ) {
+                                free(fullname);
+                                continue;
+                        }
+                }
+#endif
                 cur = my_stat(fullname, bb_basename(fullname), 0);
 #if !ENABLE_PLATFORM_MINGW32
                 if (!cur) {