2ac8589a25
error: Path relative to repository other than nuttx must begin with the root directory Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
139 lines
4.2 KiB
C
139 lines
4.2 KiB
C
/****************************************************************************
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* apps/examples/watcher/ramdisk.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/boardctl.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/mount.h>
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#include <nuttx/drivers/ramdisk.h>
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#include "fsutils/mkfatfs.h"
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#include "ramdisk.h"
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/****************************************************************************
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* Private Definitions
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****************************************************************************/
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#define BUFFER_SIZE \
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(NSECTORS * SECTORSIZE)
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct fat_format_s g_fmt = FAT_FORMAT_INITIALIZER;
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/****************************************************************************
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* Public Data
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****************************************************************************/
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static const char g_source[] = MOUNT_DEVNAME;
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static const char g_filesystemtype[] = "vfat";
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static const char g_target[] = "/mnt/watcher";
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: create_ramdisk
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*
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* Description:
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* Create a RAM disk of the specified size formatting with a FAT file
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* system
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*
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* Input Parameters:
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* None
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*
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* Return:
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* Zero on success, a negated errno on failure.
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*
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****************************************************************************/
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int create_ramdisk(void)
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{
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struct boardioc_mkrd_s desc;
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int ret;
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/* Create a RAMDISK device to manage */
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desc.minor = MINOR; /* Minor device number of the RAM disk. */
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desc.nsectors = NSECTORS; /* The number of sectors in the RAM disk. */
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desc.sectsize = SECTORSIZE; /* The size of one sector in bytes. */
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desc.rdflags = RDFLAG_WRENABLED | RDFLAG_FUNLINK; /* See ramdisk.h. */
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ret = boardctl(BOARDIOC_MKRD, (uintptr_t) & desc);
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if (ret < 0)
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{
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printf("create_ramdisk: Failed to create ramdisk at %s: %d\n",
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g_source, -ret);
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return ret;
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}
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/* Create a FAT filesystem on the ramdisk */
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ret = mkfatfs(g_source, &g_fmt);
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if (ret < 0)
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{
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printf("mkfatfs: Failed to create FAT filesystem on ramdisk at %s\n",
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g_source);
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return ret;
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}
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return 0;
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}
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int prepare_fs(void)
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{
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int ret;
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ret = create_ramdisk();
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if (ret < 0)
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{
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int errcode = errno;
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fprintf(stderr,
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"create_ramdisk: failed on creating RAM disk \
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and formatting it: %d\n",
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errcode);
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ret = errcode;
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goto errout;
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}
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ret = mount(g_source, g_target, g_filesystemtype, 0, NULL);
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if (ret < 0)
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{
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int errcode = errno;
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fprintf(stderr, "mount: Failed to mount FS: %d\n", errcode);
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ret = errcode;
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goto errout;
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}
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errout:
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return ret;
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}
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