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author | Gregory Nutt <gnutt@nuttx.org> | 2013-05-03 12:52:33 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2013-05-03 12:52:33 -0600 |
commit | 1092e4b16395d945517b9bcbc2c48828fbe9303c (patch) | |
tree | e2171ab3f21ae1e0610903694901c776a7e1a1d8 /apps/examples/smart | |
parent | 2567deb0338a774086231fbb778b639c10398cc1 (diff) | |
download | px4-nuttx-1092e4b16395d945517b9bcbc2c48828fbe9303c.tar.gz px4-nuttx-1092e4b16395d945517b9bcbc2c48828fbe9303c.tar.bz2 px4-nuttx-1092e4b16395d945517b9bcbc2c48828fbe9303c.zip |
Rearchitecting of some MTD, partition, SMART interfaces, and FLASH drivers to: Better use the byte write capbility when available and to use smaller erase sectors for the erase sector size when available).
Diffstat (limited to 'apps/examples/smart')
-rw-r--r-- | apps/examples/smart/.gitignore | 12 | ||||
-rw-r--r-- | apps/examples/smart/Kconfig | 71 | ||||
-rw-r--r-- | apps/examples/smart/Makefile | 96 | ||||
-rw-r--r-- | apps/examples/smart/smart_main.c | 954 |
4 files changed, 1133 insertions, 0 deletions
diff --git a/apps/examples/smart/.gitignore b/apps/examples/smart/.gitignore new file mode 100644 index 000000000..3c8fd3435 --- /dev/null +++ b/apps/examples/smart/.gitignore @@ -0,0 +1,12 @@ +Make.dep +.depend +.built +*.swp +*.asm +*.rel +*.lst +*.sym +*.adb +*.lib +*.src + diff --git a/apps/examples/smart/Kconfig b/apps/examples/smart/Kconfig new file mode 100644 index 000000000..933b33913 --- /dev/null +++ b/apps/examples/smart/Kconfig @@ -0,0 +1,71 @@ +# +# For a description of the syntax of this configuration file, +# see misc/tools/kconfig-language.txt. +# + +config EXAMPLES_SMART + bool "SMART file system example" + default n + ---help--- + Enable the SMART file system example + +if EXAMPLES_SMART + +config EXAMPLES_SMART_ARCHINIT + bool "Architecture-specific initialization" + default n + ---help--- + 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 EXAMPLES_SMART_ARCHINIT. In this case, the + initialization logic will call smart_archinitialize() to obtain + the MTD driver instance. + +config EXAMPLES_SMART_NEBLOCKS + int "Number of erase blocks (simulated)" + default 32 + depends on !EXAMPLES_SMART_ARCHINIT + ---help--- + When EXAMPLES_SMART_ARCHINIT is not defined, this test will use + the RAM MTD device at drivers/mtd/rammtd.c to simulate FLASH. In + this case, this value must be provided to give the nubmer of erase + blocks in MTD RAM device. + + The size of the allocated RAM drive will be: + + RAMMTD_ERASESIZE * EXAMPLES_SMART_NEBLOCKS + +config EXAMPLES_SMART_MAXNAME + int "Max name size" + default 32 + range 1 255 + ---help--- + Determines the maximum size of names used in the filesystem + +config EXAMPLES_SMART_MAXFILE + int "Max file size" + default 8192 + ---help--- + Determines the maximum size of a file + +config EXAMPLES_SMART_MAXIO + int "Max I/O" + default 347 + +config EXAMPLES_SMART_MAXOPEN + int "Max open files" + default 512 + +config EXAMPLES_SMART_MOUNTPT + string "SMART mountpoint" + default "/mnt/nxffs" + +config EXAMPLES_SMART_NLOOPS + int "Number of test loops" + default 100 + +config EXAMPLES_SMART_VERBOSE + bool "Verbose output" + default n + +endif diff --git a/apps/examples/smart/Makefile b/apps/examples/smart/Makefile new file mode 100644 index 000000000..60614ca5d --- /dev/null +++ b/apps/examples/smart/Makefile @@ -0,0 +1,96 @@ +############################################################################ +# apps/examples/smart/Makefile +# +# Copyright (C) 2011-2013 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. +# +############################################################################ + +-include $(TOPDIR)/.config +-include $(TOPDIR)/Make.defs +include $(APPDIR)/Make.defs + +# SMART file system stress test + +ASRCS = +CSRCS = smart_main.c + +AOBJS = $(ASRCS:.S=$(OBJEXT)) +COBJS = $(CSRCS:.c=$(OBJEXT)) + +SRCS = $(ASRCS) $(CSRCS) +OBJS = $(AOBJS) $(COBJS) + +ifeq ($(CONFIG_WINDOWS_NATIVE),y) + BIN = ..\..\libapps$(LIBEXT) +else +ifeq ($(WINTOOL),y) + BIN = ..\\..\\libapps$(LIBEXT) +else + BIN = ../../libapps$(LIBEXT) +endif +endif + +ROOTDEPPATH = --dep-path . + +# Common build + +VPATH = + +all: .built +.PHONY: clean depend distclean + +$(AOBJS): %$(OBJEXT): %.S + $(call ASSEMBLE, $<, $@) + +$(COBJS): %$(OBJEXT): %.c + $(call COMPILE, $<, $@) + +.built: $(OBJS) + $(call ARCHIVE, $(BIN), $(OBJS)) + @touch .built + +context: + +.depend: Makefile $(SRCS) + @$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep + @touch $@ + +depend: .depend + +clean: + $(call DELFILE, .built) + $(call CLEAN) + +distclean: clean + $(call DELFILE, Make.dep) + $(call DELFILE, .depend) + +-include Make.dep diff --git a/apps/examples/smart/smart_main.c b/apps/examples/smart/smart_main.c new file mode 100644 index 000000000..ce303caa7 --- /dev/null +++ b/apps/examples/smart/smart_main.c @@ -0,0 +1,954 @@ +/**************************************************************************** + * examples/smart/smart_main.c + * + * Copyright (C) 2011, 2013 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/mount.h> + +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <dirent.h> +#include <string.h> +#include <errno.h> +#include <crc32.h> +#include <debug.h> + +#include <nuttx/mtd.h> +#include <nuttx/smart.h> +#include <nuttx/fs/ioctl.h> +#include <nuttx/fs/mksmartfs.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_SMART_ARCHINIT. In this case, the initialization logic + * will call smart_archinitialize() to obtain the MTD driver instance. + */ + +#ifndef CONFIG_EXAMPLES_SMART_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_SMART_NEBLOCKS +# define CONFIG_EXAMPLES_SMART_NEBLOCKS (256) +# endif + +# define EXAMPLES_SMART_BUFSIZE \ + (CONFIG_RAMMTD_ERASESIZE * CONFIG_EXAMPLES_SMART_NEBLOCKS) +#endif + +#ifndef CONFIG_EXAMPLES_SMART_MAXNAME +# define CONFIG_EXAMPLES_SMART_MAXNAME 128 +#endif + +#if CONFIG_EXAMPLES_SMART_MAXNAME > 255 +# undef CONFIG_EXAMPLES_SMART_MAXNAME +# define CONFIG_EXAMPLES_SMART_MAXNAME 255 +#endif + +#ifndef CONFIG_EXAMPLES_SMART_MAXFILE +# define CONFIG_EXAMPLES_SMART_MAXFILE 8192 +#endif + +#ifndef CONFIG_EXAMPLES_SMART_MAXIO +# define CONFIG_EXAMPLES_SMART_MAXIO 347 +#endif + +#ifndef CONFIG_EXAMPLES_SMART_MAXOPEN +# define CONFIG_EXAMPLES_SMART_MAXOPEN 512 +#endif + +#ifndef CONFIG_EXAMPLES_SMART_MOUNTPT +# define CONFIG_EXAMPLES_SMART_MOUNTPT "/mnt/smart" +#endif + +#ifndef CONFIG_EXAMPLES_SMART_NLOOPS +# define CONFIG_EXAMPLES_SMART_NLOOPS 100 +#endif + +#ifndef CONFIG_EXAMPLES_SMART_VERBOSE +# define CONFIG_EXAMPLES_SMART_VERBOSE 0 +#endif + +#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_FS) +# define message syslog +# define msgflush() +#else +# define message printf +# define msgflush() fflush(stdout); +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct smart_filedesc_s +{ + FAR char *name; + bool deleted; + size_t len; + uint32_t crc; +}; + +/**************************************************************************** + * Private Data + ****************************************************************************/ +/* Pre-allocated simulated flash */ + +#ifndef CONFIG_EXAMPLES_SMART_ARCHINIT +static uint8_t g_simflash[EXAMPLES_SMART_BUFSIZE]; +#endif + +static uint8_t g_fileimage[CONFIG_EXAMPLES_SMART_MAXFILE]; +static struct smart_filedesc_s g_files[CONFIG_EXAMPLES_SMART_MAXOPEN]; +static const char g_mountdir[] = CONFIG_EXAMPLES_SMART_MOUNTPT "/"; +static int g_nfiles; +static int g_ndeleted; + +static struct mallinfo g_mmbefore; +static struct mallinfo g_mmprevious; +static struct mallinfo g_mmafter; + +/**************************************************************************** + * External Functions + ****************************************************************************/ + +#ifdef CONFIG_EXAMPLES_SMART_ARCHINIT +extern FAR struct mtd_dev_s *smart_archinitialize(void); +#endif + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: smart_memusage + ****************************************************************************/ + +static void smart_showmemusage(struct mallinfo *mmbefore, + struct mallinfo *mmafter) +{ + message("VARIABLE BEFORE AFTER\n"); + message("======== ======== ========\n"); + message("arena %8x %8x\n", mmbefore->arena, mmafter->arena); + message("ordblks %8d %8d\n", mmbefore->ordblks, mmafter->ordblks); + message("mxordblk %8x %8x\n", mmbefore->mxordblk, mmafter->mxordblk); + message("uordblks %8x %8x\n", mmbefore->uordblks, mmafter->uordblks); + message("fordblks %8x %8x\n", mmbefore->fordblks, mmafter->fordblks); +} + +/**************************************************************************** + * Name: smart_loopmemusage + ****************************************************************************/ + +static void smart_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 */ + + message("\nEnd of loop memory usage:\n"); + smart_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: smart_endmemusage + ****************************************************************************/ + +static void smart_endmemusage(void) +{ +#ifdef CONFIG_CAN_PASS_STRUCTS + g_mmafter = mallinfo(); +#else + (void)mallinfo(&g_mmafter); +#endif + message("\nFinal memory usage:\n"); + smart_showmemusage(&g_mmbefore, &g_mmafter); +} + +/**************************************************************************** + * Name: smart_randchar + ****************************************************************************/ + +static inline char smart_randchar(void) +{ + int value = rand() % 63; + if (value == 0) + { + return '0'; + } + else if (value <= 10) + { + return value + '0' - 1; + } + else if (value <= 36) + { + return value + 'a' - 11; + } + else /* if (value <= 62) */ + { + return value + 'A' - 37; + } +} + +/**************************************************************************** + * Name: smart_randname + ****************************************************************************/ + +static inline void smart_randname(FAR struct smart_filedesc_s *file) +{ + int dirlen; + int maxname; + int namelen; + int alloclen; + int i; + + dirlen = strlen(g_mountdir); + maxname = CONFIG_EXAMPLES_SMART_MAXNAME - dirlen; + namelen = (rand() % maxname) + 1; + alloclen = namelen + dirlen; + + file->name = (FAR char*)malloc(alloclen + 1); + if (!file->name) + { + message("ERROR: Failed to allocate name, length=%d\n", namelen); + msgflush(); + exit(5); + } + + memcpy(file->name, g_mountdir, dirlen); + for (i = dirlen; i < alloclen; i++) + { + file->name[i] = smart_randchar(); + } + + file->name[alloclen] = '\0'; +} + +/**************************************************************************** + * Name: smart_randfile + ****************************************************************************/ + +static inline void smart_randfile(FAR struct smart_filedesc_s *file) +{ + int i; + + file->len = (rand() % CONFIG_EXAMPLES_SMART_MAXFILE) + 1; + for (i = 0; i < file->len; i++) + { + g_fileimage[i] = smart_randchar(); + } + + file->crc = crc32(g_fileimage, file->len); +} + +/**************************************************************************** + * Name: smart_freefile + ****************************************************************************/ + +static void smart_freefile(FAR struct smart_filedesc_s *file) +{ + if (file->name) + { + free(file->name); + } + + memset(file, 0, sizeof(struct smart_filedesc_s)); +} + +/**************************************************************************** + * Name: smart_wrfile + ****************************************************************************/ + +static inline int smart_wrfile(FAR struct smart_filedesc_s *file) +{ + size_t offset; + int fd; + int ret; + + /* Create a random file */ + + smart_randname(file); + smart_randfile(file); + fd = open(file->name, O_WRONLY | O_CREAT | O_EXCL, 0666); + if (fd < 0) + { + /* If it failed because there is no space on the device, then don't + * complain. + */ + + if (errno != ENOSPC) + { + message("ERROR: Failed to open file for writing: %d\n", errno); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + } + + smart_freefile(file); + return ERROR; + } + + /* Write a random amount of data to the file */ + + for (offset = 0; offset < file->len; ) + { + size_t maxio = (rand() % CONFIG_EXAMPLES_SMART_MAXIO) + 1; + size_t nbytestowrite = file->len - offset; + ssize_t nbyteswritten; + + if (nbytestowrite > maxio) + { + nbytestowrite = maxio; + } + + nbyteswritten = write(fd, &g_fileimage[offset], nbytestowrite); + if (nbyteswritten < 0) + { + int err = errno; + + /* If the write failed because there is no space on the device, + * then don't complain. + */ + + if (err != ENOSPC) + { + message("ERROR: Failed to write file: %d\n", err); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + message(" Write offset: %d\n", offset); + message(" Write size: %d\n", nbytestowrite); + ret = ERROR; + } + close(fd); + + /* Remove any garbage file that might have been left behind */ + + ret = unlink(file->name); + if (ret < 0) + { + message(" Failed to remove partial file\n"); + } + else + { +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message(" Successfully removed partial file\n"); +#endif + } + + smart_freefile(file); + return ERROR; + } + else if (nbyteswritten != nbytestowrite) + { + message("ERROR: Partial write:\n"); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + message(" Write offset: %d\n", offset); + message(" Write size: %d\n", nbytestowrite); + message(" Written: %d\n", nbyteswritten); + } + + offset += nbyteswritten; + } + + close(fd); + return OK; +} + +/**************************************************************************** + * Name: smart_fillfs + ****************************************************************************/ + +static int smart_fillfs(void) +{ + FAR struct smart_filedesc_s *file; + int ret; + int i; + + /* Create a file for each unused file structure */ + + for (i = 0; i < CONFIG_EXAMPLES_SMART_MAXOPEN; i++) + { + file = &g_files[i]; + if (file->name == NULL) + { + ret = smart_wrfile(file); + if (ret < 0) + { +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message("ERROR: Failed to write file %d\n", i); +#endif + return ERROR; + } + +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message(" Created file %s\n", file->name); +#endif + g_nfiles++; + } + } + + return OK; +} + +/**************************************************************************** + * Name: smart_rdblock + ****************************************************************************/ + +static ssize_t smart_rdblock(int fd, FAR struct smart_filedesc_s *file, + size_t offset, size_t len) +{ + size_t maxio = (rand() % CONFIG_EXAMPLES_SMART_MAXIO) + 1; + ssize_t nbytesread; + + if (len > maxio) + { + len = maxio; + } + + nbytesread = read(fd, &g_fileimage[offset], len); + if (nbytesread < 0) + { + message("ERROR: Failed to read file: %d\n", errno); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + message(" Read offset: %d\n", offset); + message(" Read size: %d\n", len); + return ERROR; + } + else if (nbytesread == 0) + { +#if 0 /* No... we do this on purpose sometimes */ + message("ERROR: Unexpected end-of-file:\n"); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + message(" Read offset: %d\n", offset); + message(" Read size: %d\n", len); +#endif + return ERROR; + } + else if (nbytesread != len) + { + message("ERROR: Partial read:\n"); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + message(" Read offset: %d\n", offset); + message(" Read size: %d\n", len); + message(" Bytes read: %d\n", nbytesread); + } + + return nbytesread; +} + +/**************************************************************************** + * Name: smart_rdfile + ****************************************************************************/ + +static inline int smart_rdfile(FAR struct smart_filedesc_s *file) +{ + size_t ntotalread; + ssize_t nbytesread; + uint32_t crc; + int fd; + + /* Open the file for reading */ + + fd = open(file->name, O_RDONLY); + if (fd < 0) + { + if (!file->deleted) + { + message("ERROR: Failed to open file for reading: %d\n", errno); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + } + + return ERROR; + } + + /* Read all of the data info the fileimage buffer using random read sizes */ + + for (ntotalread = 0; ntotalread < file->len; ) + { + nbytesread = smart_rdblock(fd, file, ntotalread, file->len - ntotalread); + if (nbytesread < 0) + { + close(fd); + return ERROR; + } + + ntotalread += nbytesread; + } + + /* Verify the file image CRC */ + + crc = crc32(g_fileimage, file->len); + if (crc != file->crc) + { + message("ERROR: Bad CRC: %d vs %d\n", crc, file->crc); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + close(fd); + return ERROR; + } + + /* Try reading past the end of the file */ + + nbytesread = smart_rdblock(fd, file, ntotalread, 1024) ; + if (nbytesread > 0) + { + message("ERROR: Read past the end of file\n"); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + message(" Bytes read: %d\n", nbytesread); + close(fd); + return ERROR; + } + + close(fd); + return OK; +} + +/**************************************************************************** + * Name: smart_verifyfs + ****************************************************************************/ + +static int smart_verifyfs(void) +{ + FAR struct smart_filedesc_s *file; + int ret; + int i; + + /* Create a file for each unused file structure */ + + for (i = 0; i < CONFIG_EXAMPLES_SMART_MAXOPEN; i++) + { + file = &g_files[i]; + if (file->name != NULL) + { + ret = smart_rdfile(file); + if (ret < 0) + { + if (file->deleted) + { +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message("Deleted file %d OK\n", i); +#endif + smart_freefile(file); + g_ndeleted--; + g_nfiles--; + } + else + { + message("ERROR: Failed to read a file: %d\n", i); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + return ERROR; + } + } + else + { + if (file->deleted) + { +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message("Succesffully read a deleted file\n"); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); +#endif + smart_freefile(file); + g_ndeleted--; + g_nfiles--; + return ERROR; + } + else + { +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message(" Verifed file %s\n", file->name); +#endif + } + } + } + } + + return OK; +} + +/**************************************************************************** + * Name: smart_delfiles + ****************************************************************************/ + +static int smart_delfiles(void) +{ + FAR struct smart_filedesc_s *file; + int ndel; + int ret; + int i; + int j; + + /* Are there any files to be deleted? */ + + int nfiles = g_nfiles - g_ndeleted; + if (nfiles < 1) + { + return 0; + } + + /* Yes... How many files should we delete? */ + + ndel = (rand() % nfiles) + 1; + + /* Now pick which files to delete */ + + for (i = 0; i < ndel; i++) + { + /* Guess a file index */ + + int ndx = (rand() % (g_nfiles - g_ndeleted)); + + /* And delete the next undeleted file after that random index */ + + for (j = ndx + 1; j != ndx;) + { + file = &g_files[j]; + if (file->name && !file->deleted) + { + ret = unlink(file->name); + if (ret < 0) + { + message("ERROR: Unlink %d failed: %d\n", i+1, errno); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + message(" File index: %d\n", j); + } + else + { +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message(" Deleted file %s\n", file->name); +#endif + file->deleted = true; + g_ndeleted++; + break; + } + } + + /* Increment the index and test for wrap-around */ + + if (++j >= CONFIG_EXAMPLES_SMART_MAXOPEN) + { + j = 0; + } + + } + } + + return OK; +} + +/**************************************************************************** + * Name: smart_delallfiles + ****************************************************************************/ + +static int smart_delallfiles(void) +{ + FAR struct smart_filedesc_s *file; + int ret; + int i; + + for (i = 0; i < CONFIG_EXAMPLES_SMART_MAXOPEN; i++) + { + file = &g_files[i]; + if (file->name) + { + ret = unlink(file->name); + if (ret < 0) + { + message("ERROR: Unlink %d failed: %d\n", i+1, errno); + message(" File name: %s\n", file->name); + message(" File size: %d\n", file->len); + message(" File index: %d\n", i); + } + else + { +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message(" Deleted file %s\n", file->name); +#endif + smart_freefile(file); + } + } + } + + g_nfiles = 0; + g_ndeleted = 0; + return OK; +} + +/**************************************************************************** + * Name: smart_directory + ****************************************************************************/ + +static int smart_directory(void) +{ + DIR *dirp; + FAR struct dirent *entryp; + int number; + + /* Open the directory */ + + dirp = opendir(CONFIG_EXAMPLES_SMART_MOUNTPT); + + if (!dirp) + { + /* Failed to open the directory */ + + message("ERROR: Failed to open directory '%s': %d\n", + CONFIG_EXAMPLES_SMART_MOUNTPT, errno); + return ERROR; + } + + /* Read each directory entry */ + + message("Directory:\n"); + number = 1; + do + { + entryp = readdir(dirp); + if (entryp) + { + message("%2d. Type[%d]: %s Name: %s\n", + number, entryp->d_type, + entryp->d_type == DTYPE_FILE ? "File " : "Error", + entryp->d_name); + } + + number++; + } + while (entryp != NULL); + + closedir(dirp); + return OK; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: smart_main + ****************************************************************************/ + +int smart_main(int argc, char *argv[]) +{ + FAR struct mtd_dev_s *mtd; + unsigned int i; + int ret; + + /* Seed the random number generated */ + + srand(0x93846); + + /* Create and initialize a RAM MTD device instance */ + +#ifdef CONFIG_EXAMPLES_SMART_ARCHINIT + mtd = smart_archinitialize(); +#else + mtd = rammtd_initialize(g_simflash, EXAMPLES_SMART_BUFSIZE); +#endif + if (!mtd) + { + message("ERROR: Failed to create RAM MTD instance\n"); + msgflush(); + exit(1); + } + + /* Initialize to provide SMART on an MTD interface */ + + MTD_IOCTL(mtd, MTDIOC_BULKERASE, 0); + ret = smart_initialize(1, mtd); + if (ret < 0) + { + message("ERROR: SMART initialization failed: %d\n", -ret); + msgflush(); + exit(2); + } + + /* Creaet a SMARTFS filesystem */ + + ret = mksmartfs("/dev/smart1"); + + /* Mount the file system */ + + ret = mount("/dev/smart1", CONFIG_EXAMPLES_SMART_MOUNTPT, "smartfs", 0, NULL); + if (ret < 0) + { + message("ERROR: Failed to mount the SMART volume: %d\n", errno); + msgflush(); + exit(3); + } + + /* Set up memory monitoring */ + +#ifdef CONFIG_CAN_PASS_STRUCTS + g_mmbefore = mallinfo(); + g_mmprevious = g_mmbefore; +#else + (void)mallinfo(&g_mmbefore); + memcpy(&g_mmprevious, &g_mmbefore, sizeof(struct mallinfo)); +#endif + + /* Loop a few times ... file the file system with some random, files, + * delete some files randomly, fill the file system with more random file, + * delete, etc. This beats the FLASH very hard! + */ + +#if CONFIG_EXAMPLES_SMART_NLOOPS == 0 + for (i = 0; ; i++) +#else + for (i = 1; i <= CONFIG_EXAMPLES_SMART_NLOOPS; i++) +#endif + { + /* Write a files to the SMART file system until either (1) all of the + * open file structures are utilized or until (2) SMART reports an error + * (hopefully that the file system is full) + */ + + message("\n=== FILLING %d =============================\n", i); + ret = smart_fillfs(); + message("Filled file system\n"); + message(" Number of files: %d\n", g_nfiles); + message(" Number deleted: %d\n", g_ndeleted); + + /* Directory listing */ + + smart_directory(); + + /* Verify all files written to FLASH */ + + ret = smart_verifyfs(); + if (ret < 0) + { + message("ERROR: Failed to verify files\n"); + message(" Number of files: %d\n", g_nfiles); + message(" Number deleted: %d\n", g_ndeleted); + } + else + { +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message("Verified!\n"); + message(" Number of files: %d\n", g_nfiles); + message(" Number deleted: %d\n", g_ndeleted); +#endif + } + + /* Delete some files */ + + message("\n=== DELETING %d ============================\n", i); + ret = smart_delfiles(); + if (ret < 0) + { + message("ERROR: Failed to delete files\n"); + message(" Number of files: %d\n", g_nfiles); + message(" Number deleted: %d\n", g_ndeleted); + } + else + { + message("Deleted some files\n"); + message(" Number of files: %d\n", g_nfiles); + message(" Number deleted: %d\n", g_ndeleted); + } + + /* Directory listing */ + + smart_directory(); + + /* Verify all files written to FLASH */ + + ret = smart_verifyfs(); + if (ret < 0) + { + message("ERROR: Failed to verify files\n"); + message(" Number of files: %d\n", g_nfiles); + message(" Number deleted: %d\n", g_ndeleted); + } + else + { +#if CONFIG_EXAMPLES_SMART_VERBOSE != 0 + message("Verified!\n"); + message(" Number of files: %d\n", g_nfiles); + message(" Number deleted: %d\n", g_ndeleted); +#endif + } + + /* Show memory usage */ + + smart_loopmemusage(); + msgflush(); + } + + /* Delete all files then show memory usage again */ + + smart_delallfiles(); + smart_endmemusage(); + msgflush(); + return 0; +} + |