diff --git a/components/fatfs/vfs/vfs_fat.c b/components/fatfs/vfs/vfs_fat.c index e8bda64fbf..d87d3ccff2 100644 --- a/components/fatfs/vfs/vfs_fat.c +++ b/components/fatfs/vfs/vfs_fat.c @@ -369,6 +369,10 @@ static ssize_t vfs_fat_write(void* ctx, int fd, const void * data, size_t size) } unsigned written = 0; res = f_write(file, data, size, &written); + if (((written == 0) && (size != 0)) && (res == 0)) { + errno = ENOSPC; + return -1; + } if (res != FR_OK) { ESP_LOGD(TAG, "%s: fresult=%d", __func__, res); errno = fresult_to_errno(res); @@ -453,6 +457,10 @@ static ssize_t vfs_fat_pwrite(void *ctx, int fd, const void *src, size_t size, o unsigned wr = 0; f_res = f_write(file, src, size, &wr); + if (((wr == 0) && (size != 0)) && (f_res == 0)) { + errno = ENOSPC; + return -1; + } if (f_res == FR_OK) { ret = wr; } else {