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Diffstat (limited to 'nuttx/include/nuttx/ramdisk.h')
-rw-r--r-- | nuttx/include/nuttx/ramdisk.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/nuttx/include/nuttx/ramdisk.h b/nuttx/include/nuttx/ramdisk.h new file mode 100644 index 000000000..7d4017c11 --- /dev/null +++ b/nuttx/include/nuttx/ramdisk.h @@ -0,0 +1,99 @@ +/**************************************************************************** + * include/nuttx/ramdisk.h + * + * Copyright (C) 2008-2009, 2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +#ifndef __INCLUDE_NUTTX_RAMDISK_H +#define __INCLUDE_NUTTX_RAMDISK_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <stdbool.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Type Definitions + ****************************************************************************/ + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +/**************************************************************************** + * Name: ramdisk_register or romdisk_register + * + * Description: + * Non-standard function to register a ramdisk or a romdisk + * + * Input Parmeters: + * minor: Selects suffix of device named /dev/ramN, N={1,2,3...} + * nsectors: Number of sectors on device + * sectize: The size of one sector + * writeenabled: true: can write to ram disk + * buffer: RAM disk backup memory + * + * Returned Valued: + * Zero on success; a negated errno value on failure. + * + ****************************************************************************/ + +#ifdef CONFIG_FS_WRITABLE +EXTERN int ramdisk_register(int minor, FAR uint8_t *buffer, uint32_t nsectors, + uint16_t sectize, bool writeenabled); +#define romdisk_register(m,b,n,s) ramdisk_register(m,b,n,s,0) +#else +EXTERN int romdisk_register(int minor, FAR uint8_t *buffer, uint32_t nsectors, + uint16_t sectize); +#endif + +#undef EXTERN +#ifdef __cplusplus +} +#endif + +#endif /* __INCLUDE_NUTTX_RAMDISK_H */ |