Revert "readdir_r use in tagcache.check_dir, ft_load"

This reverts commit 0c737d3b2e4728347cf4d52025f9fc2ebbee6e90.

Reason for revert: Not really a concern as open_stream returns an independent buffer since g#566

Change-Id: Idbd2f4a7cc2ea6362b7714629469eeb7b3d19b3b

7 files changed, 24 insertions, 129 deletions

diff --git a/apps/filetree.c b/apps/filetree.c
index 99bb1340d7..b5f5dece5a 100644
--- a/apps/filetree.c
+++ b/apps/filetree.c
@@ -292,7 +292,6 @@ int ft_load(struct tree_context* c, const char* tempdir)
 
     int files_in_dir = 0;
     int name_buffer_used = 0;
-    struct dirent direntry;
     struct dirent *entry;
     bool (*callback_show_item)(char *, int, struct tree_context *) = NULL;
     DIR *dir;
@@ -314,7 +313,7 @@ int ft_load(struct tree_context* c, const char* tempdir)
     c->dirfull = false;
 
     tree_lock_cache(c);
-    while (readdir_r(dir, &direntry, &entry) == 0 && entry) {
+    while ((entry = readdir(dir))) {
         int len;
         struct dirinfo info;
         struct entry* dptr = tree_get_entry_at(c, files_in_dir);
@@ -327,17 +326,17 @@ int ft_load(struct tree_context* c, const char* tempdir)
         info = dir_get_info(dir, entry);
         len = strlen((char *)entry->d_name);
 
-        /* Skip FAT volume ID */
-        if (info.attribute & ATTR_VOLUME_ID) {
+        /* skip directories . and .. */
+        if ((info.attribute & ATTR_DIRECTORY) &&
+            (((len == 1) && (!strncmp((char *)entry->d_name, ".", 1))) ||
+             ((len == 2) && (!strncmp((char *)entry->d_name, "..", 2))))) {
             continue;
         }
 
-        dptr->attr = info.attribute;
-        int dir_attr = (dptr->attr & ATTR_DIRECTORY);
-
-        /* skip directories . and .. */
-        if (dir_attr && is_dotdir_name(entry->d_name))
+        /* Skip FAT volume ID */
+        if (info.attribute & ATTR_VOLUME_ID) {
             continue;
+        }
 
         /* filter out dotfiles and hidden files */
         if (*c->dirfilter != SHOW_ALL &&
@@ -346,6 +345,9 @@ int ft_load(struct tree_context* c, const char* tempdir)
             continue;
         }
 
+        dptr->attr = info.attribute;
+        int dir_attr = (dptr->attr & ATTR_DIRECTORY);
+
         /* check for known file types */
         if ( !(dir_attr) )
             dptr->attr |= filetype_get_attr((char *)entry->d_name);
diff --git a/apps/tagcache.c b/apps/tagcache.c
index 302b6ad9de..9463d7c865 100644
--- a/apps/tagcache.c
+++ b/apps/tagcache.c
@@ -4863,8 +4863,8 @@ static int free_search_roots(struct search_roots_ll * start)
 
 static bool check_dir(const char *dirname, int add_files)
 {
-    static struct dirent direntry; /* function is recursive, static uses less stack */
     int success = false;
+
     DIR *dir = opendir(dirname);
     if (!dir)
     {
@@ -4883,9 +4883,7 @@ static bool check_dir(const char *dirname, int add_files)
     /* Recursively scan the dir. */
     while (!check_event_queue())
     {
-        struct dirent *entry;
-        readdir_r(dir, &direntry, &entry);
-
+        struct dirent *entry = readdir(dir);
         if (entry == NULL)
         {
             success = true;
diff --git a/firmware/common/dir.c b/firmware/common/dir.c
index 27af5f7fca..9a78d910a7 100644
--- a/firmware/common/dir.c
+++ b/firmware/common/dir.c
@@ -159,7 +159,6 @@ file_error:
     return rc;
 }
 
-#if 0
 /* read a directory */
 struct dirent * readdir(DIR *dirp)
 {
@@ -183,19 +182,23 @@ file_error:
 
     return res;
 }
-#endif
 
-/* readdir, readdir_r common fn */
-static int readdir_common(DIR *dirp, struct dirent *entry, struct dirent **result)
+#if 0 /* not included now but probably should be */
+/* read a directory (reentrant) */
+int readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
 {
-    *result = NULL; /* we checked for validity before calling, yes? */
+    if (!result)
+        FILE_ERROR_RETURN(EFAULT, -2);
+
+    *result = NULL;
+
+    if (!entry)
+        FILE_ERROR_RETURN(EFAULT, -3);
+
     struct dirstr_desc * const dir = GET_DIRSTR(READER, dirp);
     if (!dir)
         FILE_ERROR_RETURN(ERRNO, -1);
 
-    if (!entry)
-        entry = &dir->entry;
-
     int rc = ns_readdir_dirent(&dir->stream, &dir->scan, entry);
     if (rc < 0)
         FILE_ERROR(EIO, rc * 10 - 4);
@@ -215,27 +218,6 @@ file_error:
     return rc;
 }
 
-/* read a directory */
-struct dirent * readdir(DIR *dirp)
-{
-    struct dirent *entry;
-    readdir_common(dirp, NULL, &entry);
-    return entry;
-}
-
-/* read a directory (reentrant) */
-int readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
-{
-    if (!result)
-        FILE_ERROR_RETURN(EFAULT, -2);
-    *result = NULL;
-    if (!entry)
-        FILE_ERROR_RETURN(EFAULT, -3);
-    return readdir_common(dirp, entry, result);
-}
-
-
-#if 0 /* not included now but probably should be */
 /* reset the position of a directory stream to the beginning of a directory */
 void rewinddir(DIR *dirp)
 {
diff --git a/firmware/target/hosted/filesystem-app.c b/firmware/target/hosted/filesystem-app.c
index fc4fff0eb5..7d59a174dc 100644
--- a/firmware/target/hosted/filesystem-app.c
+++ b/firmware/target/hosted/filesystem-app.c
@@ -453,56 +453,6 @@ struct dirent * app_readdir(DIR *dirp)
     return (struct dirent *)osdirent;
 }
 
-/* read a directory (reentrant) */
-int app_readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
-{
-    struct __dir *this = (struct __dir *)dirp;
-    if (!this)
-        FILE_ERROR_RETURN(EBADF, -6);
-
-    if (!result)
-        FILE_ERROR_RETURN(EFAULT, -2);
-
-    *result = NULL;
-
-    if (!entry)
-        FILE_ERROR_RETURN(EFAULT, -3);
-
-#ifdef HAVE_MULTIDRIVE
-    if (this->volumes_returned < NUM_VOLUMES)
-    {
-        while (++this->volumes_returned < NUM_VOLUMES)
-        {
-            if (!volume_present(this->volumes_returned))
-                continue;
-
-            get_volume_name(this->volumes_returned, entry->d_name);
-            *result = entry;
-            return 0;
-        }
-    }
-    /* do normal directory reads */
-#endif /* HAVE_MULTIDRIVE */
-
-    OS_DIRENT_T *osdirent = os_readdir(this->osdirp);
-    if (!osdirent)
-        FILE_ERROR_RETURN(ERRNO, -4);
-#ifdef OS_DIRENT_CONVERT
-    size_t name_size = sizeof (entry->d_name);
-    if (strlcpy_from_os(entry->d_name, osdirent->d_name,
-                        name_size) >= name_size)
-    {
-        entry->d_name[0] = '\0';
-        errno = EOVERFLOW;
-        FILE_ERROR_RETURN(ENAMETOOLONG, -5);
-    }
-
-    *result = entry;
-#endif /* OS_DIRENT_CONVERT */
-
-    return 0;
-}
-
 int app_mkdir(const char *path)
 {
     char realpath[MAX_PATH];
diff --git a/firmware/target/hosted/filesystem-app.h b/firmware/target/hosted/filesystem-app.h
index 2d7d6e817d..b35b63e95f 100644
--- a/firmware/target/hosted/filesystem-app.h
+++ b/firmware/target/hosted/filesystem-app.h
@@ -107,7 +107,6 @@ ssize_t app_readlink(const char *path, char *buf, size_t bufsize);
 #ifndef DIRFUNCTIONS_DECLARED
 DIR * app_opendir(const char *dirname);
 struct dirent * app_readdir(DIR *dirp);
-int   app_readdir_r(DIR *dirp, struct dirent* entry, struct dirent **result);
 int   app_closedir(DIR *dirp);
 int   app_mkdir(const char *path);
 int   app_rmdir(const char *path);
diff --git a/uisimulator/common/filesystem-sim.c b/uisimulator/common/filesystem-sim.c
index 54e703ff40..f4f6321b7d 100644
--- a/uisimulator/common/filesystem-sim.c
+++ b/uisimulator/common/filesystem-sim.c
@@ -704,41 +704,6 @@ struct sim_dirent * sim_readdir(DIR *dirp)
     return entry;
 }
 
-/* read a directory (reentrant) */
-int sim_readdir_r(DIR *dirp, struct sim_dirent *entry, struct sim_dirent **result)
-{
-    if (!result)
-        FILE_ERROR_RETURN(EFAULT, -2);
-
-    *result = NULL;
-
-    if (!entry)
-        FILE_ERROR_RETURN(EFAULT, -3);
-
-   struct dirstr_desc *dirstr = get_dirstr(dirp);
-    if (!dirstr)
-        FILE_ERROR_RETURN(ERRNO, -1);
-
-    entry->info.osdirent = NULL;
-
-    if (readdir_volume(dirstr, entry))
-    {
-        *result = entry;
-        return 0;
-    }
-    OS_DIRENT_T *osdirent = os_readdir(dirstr->osdirp);
-    if (!osdirent)
-        FILE_ERROR_RETURN(ERRNO, -4);
-
-    size_t size = sizeof (entry->d_name);
-    if (strlcpy_from_os(entry->d_name, osdirent->d_name, size) >= size)
-        FILE_ERROR_RETURN(ENAMETOOLONG, -5);
-
-    entry->info.osdirent = osdirent;
-    *result = entry;
-    return 0;
-}
-
 int sim_mkdir(const char *path)
 {
     char ospath[SIM_TMPBUF_MAX_PATH];
diff --git a/uisimulator/common/filesystem-sim.h b/uisimulator/common/filesystem-sim.h
index 1b6c6dfe69..346d6fa74e 100644
--- a/uisimulator/common/filesystem-sim.h
+++ b/uisimulator/common/filesystem-sim.h
@@ -98,7 +98,6 @@ struct dirinfo_native
 #ifndef DIRFUNCTIONS_DECLARED
 DIR * sim_opendir(const char *dirname);
 struct sim_dirent * sim_readdir(DIR *dirp);
-int   sim_readdir_r(DIR *dirp, struct sim_dirent* entry, struct sim_dirent **result);
 int   sim_closedir(DIR *dirp);
 int   sim_mkdir(const char *path);
 int   sim_rmdir(const char *path);