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nuttx-apps/examples/configdata/configdata_main.c

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/****************************************************************************
* examples/configdata/configdata_main.c
*
* Copyright (C) 2013 Ken Pettit. All rights reserved.
* Author: Ken Pettit <pettitkd@gmail.com>
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <crc32.h>
#include <debug.h>
#include <nuttx/mtd/mtd.h>
#include <nuttx/configdata.h>
#include <nuttx/fs/ioctl.h>
#include <sys/ioctl.h>
/****************************************************************************
* Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* The default is to use the RAM MTD device at drivers/mtd/rammtd.c. But
* an architecture-specific MTD driver can be used instead by defining
* CONFIG_EXAMPLES_CONFIGDATA_ARCHINIT. In this case, the initialization logic
* will call configdata_archinitialize() to obtain the MTD driver instance.
*/
#ifndef CONFIG_EXAMPLES_CONFIGDATA_ARCHINIT
/* This must exactly match the default configuration in drivers/mtd/rammtd.c */
# ifndef CONFIG_RAMMTD_ERASESIZE
# define CONFIG_RAMMTD_ERASESIZE 4096
# endif
# ifndef CONFIG_EXAMPLES_CONFIGDATA_NEBLOCKS
# define CONFIG_EXAMPLES_CONFIGDATA_NEBLOCKS (256)
# endif
# define EXAMPLES_CONFIGDATA_BUFSIZE \
(CONFIG_RAMMTD_ERASESIZE * CONFIG_EXAMPLES_CONFIGDATA_NEBLOCKS)
#endif
#ifndef CONFIG_EXAMPLES_CONFIGDATA_MAXSIZE
# define CONFIG_EXAMPLES_CONFIGDATA_MAXSIZE 512
#endif
#ifndef CONFIG_EXAMPLES_CONFIGDATA_MAXENTRIES
# define CONFIG_EXAMPLES_CONFIGDATA_MAXENTRIES 3000
#endif
#ifndef CONFIG_EXAMPLES_CONFIGDATA_NLOOPS
# define CONFIG_EXAMPLES_CONFIGDATA_NLOOPS 100
#endif
#define EXAMPLES_CONFIGDATA_REPORT (CONFIG_EXAMPLES_CONFIGDATA_NLOOPS / 20)
#if EXAMPLES_CONFIGDATA_REPORT == 0
# undef EXAMPLES_CONFIGDATA_REPORT
# define EXAMPLES_CONFIGDATA_REPORT 1
#endif
#ifndef CONFIG_EXAMPLES_CONFIGDATA_VERBOSE
# define CONFIG_EXAMPLES_CONFIGDATA_VERBOSE 0
#endif
/****************************************************************************
* Private Types
****************************************************************************/
struct configdata_entrydesc_s
{
uint16_t id;
uint8_t instance;
uint16_t len;
uint32_t crc;
uint8_t deleted;
uint8_t changed;
};
/****************************************************************************
* Private Data
****************************************************************************/
/* Pre-allocated simulated flash */
#ifndef CONFIG_EXAMPLES_CONFIGDATA_ARCHINIT
static uint8_t g_simflash[EXAMPLES_CONFIGDATA_BUFSIZE<<1];
#endif
static uint8_t g_entryimage[CONFIG_EXAMPLES_CONFIGDATA_MAXSIZE];
static struct configdata_entrydesc_s g_entries[CONFIG_EXAMPLES_CONFIGDATA_MAXENTRIES];
static int g_nentries;
static int g_ndeleted;
static int g_fd;
static int g_ntests, g_nverified;
static int g_ntotalalloc, g_ntotaldelete;
static struct mallinfo g_mmbefore;
static struct mallinfo g_mmprevious;
static struct mallinfo g_mmafter;
/****************************************************************************
* External Functions
****************************************************************************/
#ifdef CONFIG_EXAMPLES_CONFIGDATA_ARCHINIT
extern FAR struct mtd_dev_s *configdata_archinitialize(void);
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: configdata_memusage
****************************************************************************/
static void configdata_showmemusage(struct mallinfo *mmbefore,
struct mallinfo *mmafter)
{
printf("VARIABLE BEFORE AFTER\n");
printf("======== ======== ========\n");
printf("arena %8x %8x\n", mmbefore->arena, mmafter->arena);
printf("ordblks %8d %8d\n", mmbefore->ordblks, mmafter->ordblks);
printf("mxordblk %8x %8x\n", mmbefore->mxordblk, mmafter->mxordblk);
printf("uordblks %8x %8x\n", mmbefore->uordblks, mmafter->uordblks);
printf("fordblks %8x %8x\n", mmbefore->fordblks, mmafter->fordblks);
}
/****************************************************************************
* Name: configdata_loopmemusage
****************************************************************************/
static void configdata_loopmemusage(void)
{
/* Get the current memory usage */
#ifdef CONFIG_CAN_PASS_STRUCTS
g_mmafter = mallinfo();
#else
(void)mallinfo(&g_mmafter);
#endif
/* Show the change from the previous loop */
printf("\nEnd of loop memory usage:\n");
configdata_showmemusage(&g_mmprevious, &g_mmafter);
/* Set up for the next test */
#ifdef CONFIG_CAN_PASS_STRUCTS
g_mmprevious = g_mmafter;
#else
memcpy(&g_mmprevious, &g_mmafter, sizeof(struct mallinfo));
#endif
}
/****************************************************************************
* Name: configdata_endmemusage
****************************************************************************/
static void configdata_endmemusage(void)
{
#ifdef CONFIG_CAN_PASS_STRUCTS
g_mmafter = mallinfo();
#else
(void)mallinfo(&g_mmafter);
#endif
printf("\nFinal memory usage:\n");
configdata_showmemusage(&g_mmbefore, &g_mmafter);
printf("\nTotal adds: %d Total deletes : %d\n",
g_ntotalalloc, g_ntotaldelete);
printf("Total tests: %d Number passed: %d Failed: %d\n",
g_ntests, g_nverified, g_ntests - g_nverified);
}
/****************************************************************************
* Name: configdata_randid
****************************************************************************/
static inline uint16_t configdata_randid(void)
{
int x;
int value;
retry:
value = rand() & 0x7FFF;
if (value == 0)
{
value = 100;
}
/* Ensure we don't have a duplicate id */
for (x = 0; x < g_nentries; x++)
{
if (value == g_entries[x].id)
{
goto retry;
}
}
return value;
}
/****************************************************************************
* Name: configdata_randlen
****************************************************************************/
static inline uint16_t configdata_randlen(void)
{
int value = rand() % CONFIG_EXAMPLES_CONFIGDATA_MAXSIZE;
if (value == 0)
{
return 1;
}
return value;
}
/****************************************************************************
* Name: configdata_randinstance
****************************************************************************/
static inline uint8_t configdata_randinstance(void)
{
return rand() & 0xff;
}
/****************************************************************************
* Name: configdata_freefile
****************************************************************************/
static void configdata_freeentry(FAR struct configdata_entrydesc_s *entry)
{
memset(entry, 0, sizeof(struct configdata_entrydesc_s));
}
/****************************************************************************
* Name: configdata_wrentry
****************************************************************************/
static inline int configdata_wrentry(FAR struct configdata_entrydesc_s *entry)
{
size_t x;
int ret;
struct config_data_s config;
/* Create a random entry */
entry->id = configdata_randid();
entry->instance = configdata_randinstance();
entry->len = configdata_randlen();
/* Write some random data to the entry */
for (x = 0; x < entry->len; x++)
{
g_entryimage[x] = rand() & 0xFF;
}
/* Calculate the crc32 for the data */
entry->crc = crc32(g_entryimage, entry->len);
/* Write the entry to the /dev/config device */
config.id = entry->id;
config.instance = entry->instance;
config.len = entry->len;
config.configdata = g_entryimage;
ret = ioctl(g_fd, CFGDIOC_SETCONFIG, (unsigned long) &config);
if (ret < 0)
{
entry->id = 0;
entry->len = 0;
return ERROR;
}
return OK;
}
/****************************************************************************
* Name: configdata_fillconfig
****************************************************************************/
static int configdata_fillconfig(void)
{
FAR struct configdata_entrydesc_s *entry;
int ret;
int i;
/* Create a file for each unused file structure */
for (i = 0; i < CONFIG_EXAMPLES_CONFIGDATA_MAXENTRIES; i++)
{
entry = &g_entries[i];
if (entry->id == 0)
{
ret = configdata_wrentry(entry);
if (ret < 0)
{
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf(" /dev/config full\n");
#endif
return ERROR;
}
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf(" Created entry %04X, %d Len=%d\n",
entry->id, entry->instance, entry->len);
#endif
g_nentries++;
g_ntotalalloc++;
}
}
return OK;
}
/****************************************************************************
* Name: configdata_rdentry
****************************************************************************/
static inline int configdata_rdentry(FAR struct configdata_entrydesc_s *entry)
{
struct config_data_s config;
uint32_t crc;
int ret;
/* Read the config entry from /dev/config */
config.id = entry->id;
config.instance = entry->instance;
config.len = entry->len;
config.configdata = g_entryimage;
ret = ioctl(g_fd, CFGDIOC_GETCONFIG, (unsigned long) &config);
if (ret < 0)
{
return ERROR;
}
/* Verify the file image CRC */
crc = crc32(g_entryimage, entry->len);
if (crc != entry->crc)
{
printf("ERROR: Bad CRC: %d vs %d\n", crc, entry->crc);
printf(" Entry id: %04X\n", entry->id);
printf(" Entry size: %d\n", entry->len);
return ERROR;
}
return OK;
}
/****************************************************************************
* Name: configdata_verifyconfig
****************************************************************************/
static int configdata_verifyconfig(void)
{
FAR struct configdata_entrydesc_s *entry;
int ret;
int err = OK;
int i;
static int iteration = 0;
/* Create a file for each unused file structure */
iteration++;
for (i = 0; i < CONFIG_EXAMPLES_CONFIGDATA_MAXENTRIES; i++)
{
entry = &g_entries[i];
if (entry->id != 0)
{
g_ntests++;
ret = configdata_rdentry(entry);
if (ret < 0)
{
/* Check if this entry has been deleted */
if (entry->deleted)
{
/* Good, it wasn't found (as it shouldn't be) */
g_nverified++;
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf(" Verified delete %04X, %d\n", entry->id,
entry->instance);
#endif
}
else
{
printf("ERROR: Failed to read an entry: %d\n", i);
printf(" Entry id: %04X\n", entry->id);
printf(" Entry size: %d\n", entry->len);
err = ERROR;
}
}
else
{
/* Check if this entry has been deleted and should report an error */
if (entry->deleted)
{
printf("ERROR: Succesffully read a deleted entry\n");
printf(" Entry id: %04X\n", entry->id);
printf(" Entry size: %d\n", entry->len);
err = ERROR;
}
else
{
g_nverified++;
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf(" Verifed entry %04X, %d\n", entry->id, entry->instance);
#endif
}
}
}
}
return err;
}
/****************************************************************************
* Name: configdata_delentries
****************************************************************************/
static int configdata_delentries(void)
{
FAR struct configdata_entrydesc_s *entry;
struct config_data_s hdr;
int ndel;
int ret;
int i;
int j;
/* Are there any files to be deleted? */
int nentries = g_nentries - g_ndeleted;
if (nentries < 1)
{
return 0;
}
/* Yes... How many files should we delete? */
ndel = (rand() % nentries) + 1;
/* Now pick which files to delete */
for (i = 0; i < ndel; i++)
{
/* Guess a file index */
int ndx = (rand() % (g_nentries - g_ndeleted));
/* And delete the next undeleted file after that random index */
for (j = ndx + 1; j != ndx;)
{
entry = &g_entries[j];
if (entry->id && !entry->deleted)
{
hdr.id = entry->id;
hdr.instance = entry->instance;
hdr.len = 0;
ret = ioctl(g_fd, CFGDIOC_SETCONFIG, (unsigned long) &hdr);
if (ret < 0)
{
printf("ERROR: Delete %d failed: %d\n", i+1, errno);
printf(" Entry id: %04X\n", entry->id);
printf(" Entry size: %d\n", entry->len);
printf(" Entry index: %d\n", j);
}
else
{
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf(" Deleted entry %04X\n", entry->id);
#endif
entry->deleted = true;
g_ndeleted++;
g_ntotaldelete++;
break;
}
}
/* Increment the index and test for wrap-around */
if (++j >= CONFIG_EXAMPLES_CONFIGDATA_MAXENTRIES)
{
j = 0;
}
}
}
return OK;
}
/****************************************************************************
* Name: configdata_getnextdeleted
****************************************************************************/
static int configdata_getnextdeleted(void)
{
int x;
int nextdeleted = -1;
/* Find next deleted entry */
for (x = 0; x < CONFIG_EXAMPLES_CONFIGDATA_MAXENTRIES; x++)
{
if (g_entries[x].deleted)
{
nextdeleted = x;
break;
}
}
return nextdeleted;
}
/****************************************************************************
* Name: configdata_cleardeleted
****************************************************************************/
static int configdata_cleardeleted(void)
{
int nextdeleted;
int x;
while ((nextdeleted = configdata_getnextdeleted()) != -1)
{
/* Find next non-deleted entry after the deleted one */
for (x = nextdeleted + 1; x < CONFIG_EXAMPLES_CONFIGDATA_MAXENTRIES; x++)
{
if (g_entries[x].id && !g_entries[x].deleted)
{
break;
}
}
/* Test if an non-deleted entry found */
if (x < CONFIG_EXAMPLES_CONFIGDATA_MAXENTRIES)
{
/* Move this entry to the deleted entry location */
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf(" Overwrite entry %d, OLD=%04X NEW=%04X\n",
nextdeleted, g_entries[nextdeleted].id, g_entries[x].id);
#endif
g_entries[nextdeleted] = g_entries[x];
g_entries[x].id = 0;
}
else
{
/* Just remove the entry */
g_entries[nextdeleted].id = 0;
g_entries[nextdeleted].deleted = FALSE;
}
}
g_nentries -= g_ndeleted;
g_ndeleted = 0;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: configdata_main
****************************************************************************/
#ifdef CONFIG_BUILD_KERNEL
int main(int argc, FAR char *argv[])
#else
int configdata_main(int argc, char *argv[])
#endif
{
unsigned int i;
int ret;
FAR struct mtd_dev_s *mtd;
/* Seed the random number generated */
srand(0x93846);
/* Create and initialize a RAM MTD device instance */
#ifdef CONFIG_EXAMPLES_CONFIGDATA_ARCHINIT
mtd = configdata_archinitialize();
#else
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf("Creating %d byte RAM drive\n", EXAMPLES_CONFIGDATA_BUFSIZE);
#endif
mtd = rammtd_initialize(g_simflash, EXAMPLES_CONFIGDATA_BUFSIZE);
#endif
if (!mtd)
{
printf("ERROR: Failed to create RAM MTD instance\n");
fflush(stdout);
exit(1);
}
/* Initialize to provide CONFIGDATA on an MTD interface */
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf("Registering /dev/config device\n");
#endif
MTD_IOCTL(mtd, MTDIOC_BULKERASE, 0);
ret = mtdconfig_register(mtd);
if (ret < 0)
{
printf("ERROR: /dev/config registration failed: %d\n", -ret);
fflush(stdout);
exit(2);
}
/* Zero out our entry array */
memset(g_entries, 0, sizeof(g_entries));
/* Open the /dev/config device */
g_fd = open("/dev/config", O_RDOK);
if (g_fd == -1)
{
printf("ERROR: Failed to open /dev/config %d\n", -errno);
fflush(stdout);
exit(2);
}
/* Initialize the before memory values */
#ifdef CONFIG_CAN_PASS_STRUCTS
g_mmbefore = mallinfo();
#else
(void)mallinfo(&g_mmbefore);
#endif
/* Loop seveal times ... create some config data items, delete them
* randomly, verify them randomly, add new config items.
*/
g_ntests = g_nverified = 0;
g_ntotaldelete = g_ntotalalloc = 0;
#if CONFIG_EXAMPLES_CONFIGDATA_NLOOPS == 0
for (i = 0; ; i++)
#else
for (i = 1; i <= CONFIG_EXAMPLES_CONFIGDATA_NLOOPS; i++)
#endif
{
/* Write config data to the /dev/config device until either (1) all of the
* open file structures are utilized or until (2) CONFIGDATA reports an error
* (hopefully that the /dev/config device is full)
*/
#ifndef CONFIG_EXAMPLES_CONFIGDATA_SILENT
printf("\n=== FILLING %u =============================\n", i);
#endif
(void)configdata_fillconfig();
#ifndef CONFIG_EXAMPLES_CONFIGDATA_SILENT
printf("Filled /dev/config\n");
printf(" Number of entries: %d\n", g_nentries);
#endif
/* Verify all files entries to FLASH */
ret = configdata_verifyconfig();
if (ret < 0)
{
printf("ERROR: Failed to verify partition\n");
printf(" Number of entries: %d\n", g_nentries);
}
else
{
#ifndef CONFIG_EXAMPLES_CONFIGDATA_SILENT
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf("Verified!\n");
printf(" Number of entries: %d\n", g_nentries);
#endif
#endif
}
/* Delete some entries */
#ifndef CONFIG_EXAMPLES_CONFIGDATA_SILENT
printf("\n=== DELETING %u ============================\n", i);
#endif
ret = configdata_delentries();
if (ret < 0)
{
printf("ERROR: Failed to delete enries\n");
printf(" Number of entries: %d\n", g_nentries);
printf(" Number deleted: %d\n", g_ndeleted);
}
else
{
#ifndef CONFIG_EXAMPLES_CONFIGDATA_SILENT
printf("Deleted some enries\n");
printf(" Number of entries: %d\n", g_nentries);
printf(" Number deleted: %d\n", g_ndeleted);
#endif
}
/* Verify all files written to FLASH */
ret = configdata_verifyconfig();
if (ret < 0)
{
printf("ERROR: Failed to verify partition\n");
printf(" Number of entries: %d\n", g_nentries);
printf(" Number deleted: %d\n", g_ndeleted);
}
else
{
#ifndef CONFIG_EXAMPLES_CONFIGDATA_SILENT
#if CONFIG_EXAMPLES_CONFIGDATA_VERBOSE != 0
printf("Verified!\n");
printf(" Number of entries: %d\n", g_nentries);
printf(" Number deleted: %d\n", g_ndeleted);
#endif
#endif
}
/* Clear deleted entries */
configdata_cleardeleted();
/* Show memory usage */
#ifndef CONFIG_EXAMPLES_CONFIGDATA_SILENT
configdata_loopmemusage();
fflush(stdout);
#else
if ((i % EXAMPLES_CONFIGDATA_REPORT) == 0)
{
printf("%u\n", i);
fflush(stdout);
}
#endif
}
/* Delete all files then show memory usage again */
//configdata_delallfiles();
configdata_endmemusage();
fflush(stdout);
return 0;
}
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