diff --git a/components/fatfs/vfs/vfs_fat.c b/components/fatfs/vfs/vfs_fat.c
index 6a72e80c2c..b2c0c25b06 100644
--- a/components/fatfs/vfs/vfs_fat.c
+++ b/components/fatfs/vfs/vfs_fat.c
@@ -39,7 +39,7 @@ typedef struct {
     FATFS fs;           /* fatfs library FS structure */
     char tmp_path_buf[FILENAME_MAX+3];  /* temporary buffer used to prepend drive name to the path */
     char tmp_path_buf2[FILENAME_MAX+3]; /* as above; used in functions which take two path arguments */
-    bool *o_append;  /* O_APPEND is stored here for each max_files entries (because O_APPEND is not compatible with FA_OPEN_APPEND) */
+    uint32_t *flags; /* file descriptor flags, array of max_files size */
 #ifdef CONFIG_VFS_SUPPORT_DIR
     char dir_path[FILENAME_MAX]; /* variable to store path of opened directory*/
     struct cached_data cached_fileinfo;
@@ -85,6 +85,7 @@ static int vfs_fat_open(void* ctx, const char * path, int flags, int mode);
 static int vfs_fat_close(void* ctx, int fd);
 static int vfs_fat_fstat(void* ctx, int fd, struct stat * st);
 static int vfs_fat_fsync(void* ctx, int fd);
+static int vfs_fat_fcntl(void* ctx, int fd, int cmd, int arg);
 #ifdef CONFIG_VFS_SUPPORT_DIR
 static int vfs_fat_stat(void* ctx, const char * path, struct stat * st);
 static int vfs_fat_link(void* ctx, const char* n1, const char* n2);
@@ -170,6 +171,7 @@ static const esp_vfs_fs_ops_t s_vfs_fat = {
     .open_p = &vfs_fat_open,
     .close_p = &vfs_fat_close,
     .fstat_p = &vfs_fat_fstat,
+    .fcntl_p = &vfs_fat_fcntl,
     .fsync_p = &vfs_fat_fsync,
 #ifdef CONFIG_VFS_SUPPORT_DIR
     .dir = &s_vfs_fat_dir,
@@ -199,19 +201,19 @@ esp_err_t esp_vfs_fat_register_cfg(const esp_vfs_fat_conf_t* conf, FATFS** out_f
         return ESP_ERR_NO_MEM;
     }
     memset(fat_ctx, 0, ctx_size);
-    fat_ctx->o_append = ff_memalloc(max_files * sizeof(bool));
-    if (fat_ctx->o_append == NULL) {
+    fat_ctx->flags = ff_memalloc(max_files * sizeof(*fat_ctx->flags));
+    if (fat_ctx->flags == NULL) {
         free(fat_ctx);
         return ESP_ERR_NO_MEM;
     }
-    memset(fat_ctx->o_append, 0, max_files * sizeof(bool));
+    memset(fat_ctx->flags, 0, max_files * sizeof(*fat_ctx->flags));
     fat_ctx->max_files = max_files;
     strlcpy(fat_ctx->fat_drive, conf->fat_drive, sizeof(fat_ctx->fat_drive) - 1);
     strlcpy(fat_ctx->base_path, conf->base_path, sizeof(fat_ctx->base_path) - 1);
 
     esp_err_t err = esp_vfs_register_fs(conf->base_path, &s_vfs_fat, ESP_VFS_FLAG_CONTEXT_PTR | ESP_VFS_FLAG_STATIC, fat_ctx);
     if (err != ESP_OK) {
-        free(fat_ctx->o_append);
+        free(fat_ctx->flags);
         free(fat_ctx);
         return err;
     }
@@ -239,7 +241,7 @@ esp_err_t esp_vfs_fat_unregister_path(const char* base_path)
         return err;
     }
     _lock_close(&fat_ctx->lock);
-    free(fat_ctx->o_append);
+    free(fat_ctx->flags);
     free(fat_ctx);
     s_fat_ctxs[ctx] = NULL;
     return ESP_OK;
@@ -427,7 +429,7 @@ static int vfs_fat_open(void* ctx, const char * path, int flags, int mode)
     // Other VFS drivers handles O_APPEND well (to the best of my knowledge),
     // therefore this flag is stored here (at this VFS level) in order to save
     // memory.
-    fat_ctx->o_append[fd] = (flags & O_APPEND) == O_APPEND;
+    fat_ctx->flags[fd] = (flags & (O_APPEND | O_ACCMODE));
     _lock_release(&fat_ctx->lock);
     return fd;
 }
@@ -438,7 +440,7 @@ static ssize_t vfs_fat_write(void* ctx, int fd, const void * data, size_t size)
     FIL* file = &fat_ctx->files[fd];
     FRESULT res;
     _lock_acquire(&fat_ctx->lock);
-    if (fat_ctx->o_append[fd]) {
+    if (fat_ctx->flags[fd] & O_APPEND) {
         if ((res = f_lseek(file, f_size(file))) != FR_OK) {
             ESP_LOGD(TAG, "%s: fresult=%d", __func__, res);
             errno = fresult_to_errno(res);
@@ -672,6 +674,26 @@ static int vfs_fat_fstat(void* ctx, int fd, struct stat * st)
     return 0;
 }
 
+static int vfs_fat_fcntl(void* ctx, int fd, int cmd, int arg)
+{
+    vfs_fat_ctx_t* fat_ctx = (vfs_fat_ctx_t*) ctx;
+    switch (cmd) {
+        case F_GETFL:
+            return fat_ctx->flags[fd];
+        case F_SETFL:
+            fat_ctx->flags[fd] = arg;
+            return 0;
+        // no-ops:
+        case F_SETLK:
+        case F_SETLKW:
+        case F_GETLK:
+            return 0;
+        default:
+            errno = EINVAL;
+            return -1;
+    }
+}
+
 #ifdef CONFIG_VFS_SUPPORT_DIR
 
 static inline mode_t get_stat_mode(bool is_dir)