[PATCH 1/2] JFFS2: Add RTEMS_JFFS2_GET_INFO
Sebastian Huber
sebastian.huber at embedded-brains.de
Mon Dec 19 11:37:00 UTC 2016
Add IO control RTEMS_JFFS2_GET_INFO to get some JFFS2 filesystem
instance information.
Update #2844.
---
cpukit/libfs/src/jffs2/include/rtems/jffs2.h | 100 ++++++++++
cpukit/libfs/src/jffs2/src/fs-rtems.c | 72 ++++++-
testsuites/fstests/Makefile.am | 1 +
testsuites/fstests/configure.ac | 1 +
testsuites/fstests/fsjffs2gc01/Makefile.am | 29 +++
testsuites/fstests/fsjffs2gc01/fsjffs2gc01.doc | 11 ++
testsuites/fstests/fsjffs2gc01/fsjffs2gc01.scn | 6 +
testsuites/fstests/fsjffs2gc01/init.c | 251 +++++++++++++++++++++++++
8 files changed, 468 insertions(+), 3 deletions(-)
create mode 100644 testsuites/fstests/fsjffs2gc01/Makefile.am
create mode 100644 testsuites/fstests/fsjffs2gc01/fsjffs2gc01.doc
create mode 100644 testsuites/fstests/fsjffs2gc01/fsjffs2gc01.scn
create mode 100644 testsuites/fstests/fsjffs2gc01/init.c
diff --git a/cpukit/libfs/src/jffs2/include/rtems/jffs2.h b/cpukit/libfs/src/jffs2/include/rtems/jffs2.h
index 7b2f4d5..b2810e2 100644
--- a/cpukit/libfs/src/jffs2/include/rtems/jffs2.h
+++ b/cpukit/libfs/src/jffs2/include/rtems/jffs2.h
@@ -17,6 +17,7 @@
#include <rtems/fs.h>
#include <sys/param.h>
+#include <sys/ioccom.h>
#include <zlib.h>
#ifdef __cplusplus
@@ -455,6 +456,105 @@ int rtems_jffs2_initialize(
const void *data
);
+/**
+ * @brief JFFS2 filesystem instance information.
+ *
+ * @see RTEMS_JFFS2_GET_INFO.
+ */
+typedef struct {
+ /**
+ * @brief Flash size in bytes.
+ */
+ uint32_t flash_size;
+
+ /**
+ * @brief Count of flash blocks (eraseable units).
+ */
+ uint32_t flash_blocks;
+
+ /**
+ * @brief Size of a flash block in bytes.
+ */
+ uint32_t flash_block_size;
+
+ /**
+ * @brief Used size in bytes.
+ *
+ * Used areas contain valid data.
+ */
+ uint32_t used_size;
+
+ /**
+ * @brief Dirty size in bytes.
+ *
+ * Used areas contain no longer used data.
+ */
+ uint32_t dirty_size;
+
+ /**
+ * @brief Wasted size in bytes.
+ *
+ * Wasted areas are unusable.
+ */
+ uint32_t wasted_size;
+
+ /**
+ * @brief Free size in bytes.
+ *
+ * Free areas may be used to store new data.
+ */
+ uint32_t free_size;
+
+ /**
+ * @brief Bad size in bytes.
+ *
+ * Bad areas indicate damaged flash blocks.
+ */
+ uint32_t bad_size;
+
+ /**
+ * @brief Count of clean blocks.
+ *
+ * Clean blocks contain only used areas.
+ */
+ uint32_t clean_blocks;
+
+ /**
+ * @brief Count of dirty blocks.
+ *
+ * Dirty blocks contain dirty and used areas.
+ */
+ uint32_t dirty_blocks;
+
+ /**
+ * @brief Count of erasable blocks.
+ *
+ * Erase blocks contain only dirty or wasted areas.
+ */
+ uint32_t erasable_blocks;
+
+ /**
+ * @brief Count of free blocks.
+ *
+ * Free blocks contain a free area.
+ */
+ uint32_t free_blocks;
+
+ /**
+ * @brief Count of bad blocks.
+ *
+ * Bad blocks are damaged.
+ */
+ uint32_t bad_blocks;
+} rtems_jffs2_info;
+
+/**
+ * @brief IO control to get the JFFS2 filesystem instance information.
+ *
+ * @see rtems_jffs2_info.
+ */
+#define RTEMS_JFFS2_GET_INFO _IOR('F', 1, rtems_jffs2_info)
+
/** @} */
#ifdef __cplusplus
diff --git a/cpukit/libfs/src/jffs2/src/fs-rtems.c b/cpukit/libfs/src/jffs2/src/fs-rtems.c
index ce84d44..54e41c6 100644
--- a/cpukit/libfs/src/jffs2/src/fs-rtems.c
+++ b/cpukit/libfs/src/jffs2/src/fs-rtems.c
@@ -512,12 +512,78 @@ static ssize_t rtems_jffs2_dir_read(rtems_libio_t *iop, void *buf, size_t len)
}
}
+static uint32_t rtems_jffs2_count_blocks(const struct list_head *list)
+{
+ uint32_t count = 0;
+ struct jffs2_eraseblock *jeb;
+
+ list_for_each_entry(jeb, list, list) {
+ ++count;
+ }
+
+ return count;
+}
+
+static void rtems_jffs2_get_info(
+ const struct jffs2_sb_info *sb,
+ rtems_jffs2_info *info
+)
+{
+ info->flash_size = sb->flash_size;
+ info->flash_blocks = sb->nr_blocks;
+ info->flash_block_size = sb->sector_size;
+ info->used_size = sb->used_size;
+ info->dirty_size = sb->dirty_size;
+ info->wasted_size = sb->wasted_size;
+ info->free_size = sb->free_size;
+ info->bad_size = sb->bad_size;
+ info->clean_blocks = rtems_jffs2_count_blocks(&sb->clean_list);
+ info->dirty_blocks = rtems_jffs2_count_blocks(&sb->very_dirty_list)
+ + rtems_jffs2_count_blocks(&sb->dirty_list);
+ info->dirty_blocks += sb->gcblock != NULL;
+ info->erasable_blocks = rtems_jffs2_count_blocks(&sb->erasable_list)
+ + rtems_jffs2_count_blocks(&sb->erasable_pending_wbuf_list)
+ + rtems_jffs2_count_blocks(&sb->erasing_list)
+ + rtems_jffs2_count_blocks(&sb->erase_checking_list)
+ + rtems_jffs2_count_blocks(&sb->erase_pending_list)
+ + rtems_jffs2_count_blocks(&sb->erase_complete_list);
+ info->free_blocks = rtems_jffs2_count_blocks(&sb->free_list);
+ info->free_blocks += sb->nextblock != NULL;
+ info->bad_blocks = rtems_jffs2_count_blocks(&sb->bad_list);
+}
+
+static int rtems_jffs2_ioctl(
+ rtems_libio_t *iop,
+ ioctl_command_t request,
+ void *buffer
+)
+{
+ struct _inode *inode = rtems_jffs2_get_inode_by_iop(iop);
+ int eno;
+
+ rtems_jffs2_do_lock(inode->i_sb);
+
+ switch (request) {
+ case RTEMS_JFFS2_GET_INFO:
+ rtems_jffs2_get_info(&inode->i_sb->jffs2_sb, buffer);
+ eno = 0;
+ break;
+ default:
+ eno = EINVAL;
+ break;
+ }
+
+ rtems_jffs2_do_unlock(inode->i_sb);
+
+ return rtems_jffs2_eno_to_rv_and_errno(eno);
+}
+
static const rtems_filesystem_file_handlers_r rtems_jffs2_directory_handlers = {
.open_h = rtems_filesystem_default_open,
.close_h = rtems_filesystem_default_close,
.read_h = rtems_jffs2_dir_read,
.write_h = rtems_filesystem_default_write,
- .ioctl_h = rtems_filesystem_default_ioctl,
+ .ioctl_h = rtems_jffs2_ioctl,
.lseek_h = rtems_filesystem_default_lseek_directory,
.fstat_h = rtems_jffs2_fstat,
.ftruncate_h = rtems_filesystem_default_ftruncate_directory,
@@ -659,7 +725,7 @@ static const rtems_filesystem_file_handlers_r rtems_jffs2_file_handlers = {
.close_h = rtems_filesystem_default_close,
.read_h = rtems_jffs2_file_read,
.write_h = rtems_jffs2_file_write,
- .ioctl_h = rtems_filesystem_default_ioctl,
+ .ioctl_h = rtems_jffs2_ioctl,
.lseek_h = rtems_filesystem_default_lseek_file,
.fstat_h = rtems_jffs2_fstat,
.ftruncate_h = rtems_jffs2_file_ftruncate,
@@ -677,7 +743,7 @@ static const rtems_filesystem_file_handlers_r rtems_jffs2_link_handlers = {
.close_h = rtems_filesystem_default_close,
.read_h = rtems_filesystem_default_read,
.write_h = rtems_filesystem_default_write,
- .ioctl_h = rtems_filesystem_default_ioctl,
+ .ioctl_h = rtems_jffs2_ioctl,
.lseek_h = rtems_filesystem_default_lseek,
.fstat_h = rtems_jffs2_fstat,
.ftruncate_h = rtems_filesystem_default_ftruncate,
diff --git a/testsuites/fstests/Makefile.am b/testsuites/fstests/Makefile.am
index 930fbd7..0edd259 100644
--- a/testsuites/fstests/Makefile.am
+++ b/testsuites/fstests/Makefile.am
@@ -1,6 +1,7 @@
ACLOCAL_AMFLAGS = -I ../aclocal
_SUBDIRS =
+_SUBDIRS += fsjffs2gc01
_SUBDIRS += fsimfsconfig03
_SUBDIRS += fsimfsconfig02
_SUBDIRS += fsimfsconfig01
diff --git a/testsuites/fstests/configure.ac b/testsuites/fstests/configure.ac
index f0bbaaf..7d00ba7 100644
--- a/testsuites/fstests/configure.ac
+++ b/testsuites/fstests/configure.ac
@@ -77,6 +77,7 @@ AC_CHECK_SIZEOF([blkcnt_t])
# Explicitly list all Makefiles here
AC_CONFIG_FILES([Makefile
+fsjffs2gc01/Makefile
fsimfsconfig03/Makefile
fsimfsconfig02/Makefile
fsimfsconfig01/Makefile
diff --git a/testsuites/fstests/fsjffs2gc01/Makefile.am b/testsuites/fstests/fsjffs2gc01/Makefile.am
new file mode 100644
index 0000000..e0571f4
--- /dev/null
+++ b/testsuites/fstests/fsjffs2gc01/Makefile.am
@@ -0,0 +1,29 @@
+rtems_tests_PROGRAMS = fsjffs2gc01
+fsjffs2gc01_SOURCES = init.c
+fsjffs2gc01_SOURCES += ../support/fstest_support.c
+fsjffs2gc01_SOURCES += ../support/fstest_support.h
+fsjffs2gc01_SOURCES += ../support/fstest.h
+fsjffs2gc01_SOURCES += ../../psxtests/include/pmacros.h
+fsjffs2gc01_SOURCES += ../jffs2_support/fs_support.c
+fsjffs2gc01_SOURCES += ../jffs2_support/fs_config.h
+fsjffs2gc01_LDADD = -ljffs2
+
+dist_rtems_tests_DATA = fsjffs2gc01.scn fsjffs2gc01.doc
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP at .cfg
+include $(top_srcdir)/../automake/compile.am
+include $(top_srcdir)/../automake/leaf.am
+
+AM_CPPFLAGS += -I$(top_srcdir)/support
+AM_CPPFLAGS += -I$(top_srcdir)/jffs2_support
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include
+AM_CPPFLAGS += -I$(top_srcdir)/../psxtests/include
+
+LINK_OBJS = $(fsjffs2gc01_OBJECTS) $(fsjffs2gc01_LDADD)
+LINK_LIBS = $(fsjffs2gc01_LDLIBS)
+
+fsjffs2gc01$(EXEEXT): $(fsjffs2gc01_OBJECTS) $(fsjffs2gc01_DEPENDENCIES)
+ @rm -f fsjffs2gc01$(EXEEXT)
+ $(make-exe)
+
+include $(top_srcdir)/../automake/local.am
diff --git a/testsuites/fstests/fsjffs2gc01/fsjffs2gc01.doc b/testsuites/fstests/fsjffs2gc01/fsjffs2gc01.doc
new file mode 100644
index 0000000..53e71a4
--- /dev/null
+++ b/testsuites/fstests/fsjffs2gc01/fsjffs2gc01.doc
@@ -0,0 +1,11 @@
+This file describes the directives and concepts tested by this test set.
+
+test set name: fsjffs2gc01
+
+directives:
+
+ - JFFS2 implementation
+
+concepts:
+
+ - Ensure that RTEMS_JFFS2_GET_INFO returns the expected information.
diff --git a/testsuites/fstests/fsjffs2gc01/fsjffs2gc01.scn b/testsuites/fstests/fsjffs2gc01/fsjffs2gc01.scn
new file mode 100644
index 0000000..7747e8d
--- /dev/null
+++ b/testsuites/fstests/fsjffs2gc01/fsjffs2gc01.scn
@@ -0,0 +1,6 @@
+*** BEGIN OF TEST FSJFFS2GC 1 ***
+Initializing filesystem JFFS2
+
+
+Shutting down filesystem JFFS2
+*** END OF TEST FSJFFS2GC 1 ***
diff --git a/testsuites/fstests/fsjffs2gc01/init.c b/testsuites/fstests/fsjffs2gc01/init.c
new file mode 100644
index 0000000..df2e986
--- /dev/null
+++ b/testsuites/fstests/fsjffs2gc01/init.c
@@ -0,0 +1,251 @@
+/*
+ * Copyright (c) 2016 embedded brains GmbH. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Dornierstr. 4
+ * 82178 Puchheim
+ * Germany
+ * <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <tmacros.h>
+#include <fstest.h>
+
+#include <sys/stat.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <rtems/jffs2.h>
+
+const char rtems_test_name[] = "FSJFFS2GC 1";
+
+static const rtems_jffs2_info info_initial = {
+ .flash_size = 131072,
+ .flash_blocks = 8,
+ .flash_block_size = 16384,
+ .used_size = 96,
+ .dirty_size = 0,
+ .wasted_size = 0,
+ .free_size = 130976,
+ .bad_size = 0,
+ .clean_blocks = 0,
+ .dirty_blocks = 0,
+ .erasable_blocks = 0,
+ .free_blocks = 8,
+ .bad_blocks = 0
+};
+
+static const rtems_jffs2_info info_big_created = {
+ .flash_size = 131072,
+ .flash_blocks = 8,
+ .flash_block_size = 16384,
+ .used_size = 22292,
+ .dirty_size = 0,
+ .wasted_size = 164,
+ .free_size = 108616,
+ .bad_size = 0,
+ .clean_blocks = 1,
+ .dirty_blocks = 0,
+ .erasable_blocks = 0,
+ .free_blocks = 7,
+ .bad_blocks = 0
+};
+
+static const rtems_jffs2_info info_big_removed = {
+ .flash_size = 131072,
+ .flash_blocks = 8,
+ .flash_block_size = 16384,
+ .used_size = 72,
+ .dirty_size = 16384,
+ .wasted_size = 6000,
+ .free_size = 108616,
+ .bad_size = 0,
+ .clean_blocks = 0,
+ .dirty_blocks = 0,
+ .erasable_blocks = 1,
+ .free_blocks = 7,
+ .bad_blocks = 0
+};
+
+static const rtems_jffs2_info info_more_files_created = {
+ .flash_size = 131072,
+ .flash_blocks = 8,
+ .flash_block_size = 16384,
+ .used_size = 54896,
+ .dirty_size = 23336,
+ .wasted_size = 36,
+ .free_size = 52804,
+ .bad_size = 0,
+ .clean_blocks = 2,
+ .dirty_blocks = 1,
+ .erasable_blocks = 1,
+ .free_blocks = 4,
+ .bad_blocks = 0
+};
+
+static const rtems_jffs2_info info_some_files_removed = {
+ .flash_size = 131072,
+ .flash_blocks = 8,
+ .flash_block_size = 16384,
+ .used_size = 23528,
+ .dirty_size = 47372,
+ .wasted_size = 7368,
+ .free_size = 52804,
+ .bad_size = 0,
+ .clean_blocks = 0,
+ .dirty_blocks = 3,
+ .erasable_blocks = 1,
+ .free_blocks = 4,
+ .bad_blocks = 0
+};
+
+static char big[] = "big";
+
+static const char * const more[] = {
+ "1",
+ "2",
+ "3",
+ "4",
+ "5",
+ "6",
+ "7"
+};
+
+#define ASSERT_INFO(a, b) do { \
+ rv = ioctl(fd, RTEMS_JFFS2_GET_INFO, &info); \
+ rtems_test_assert(rv == 0); \
+ rtems_test_assert(memcmp(a, b, sizeof(*a)) == 0); \
+} while (0)
+
+static const mode_t mode = S_IRWXU | S_IRWXG | S_IRWXO;
+
+static char keg[523];
+
+static uint32_t simple_random(uint32_t v)
+{
+ v *= 1664525;
+ v += 1013904223;
+
+ return v;
+}
+
+static void init_keg(void)
+{
+ size_t i;
+ uint32_t v;
+
+ v = 123;
+ for (i = 0; i < sizeof(keg); ++i) {
+ v = simple_random(v);
+ keg[i] = (uint8_t) (v >> 23);
+ }
+}
+
+static void write_kegs(int fd, int kegs)
+{
+ int i;
+
+ for (i = 0; i < kegs; ++i) {
+ ssize_t n;
+
+ n = write(fd, &keg[0], sizeof(keg));
+ rtems_test_assert(n == (ssize_t) sizeof(keg));
+ }
+}
+
+static void create_big_file(void)
+{
+ int fd;
+ int rv;
+
+ fd = open(&big[0], O_WRONLY | O_TRUNC | O_CREAT, mode);
+ rtems_test_assert(fd >= 0);
+
+ write_kegs(fd, 37);
+
+ rv = close(fd);
+ rtems_test_assert(rv == 0);
+}
+
+static void remove_big_file(void)
+{
+ int rv;
+
+ rv = unlink(&big[0]);
+ rtems_test_assert(rv == 0);
+}
+
+static void create_more_files(void)
+{
+ int fds[RTEMS_ARRAY_SIZE(more)];
+ int rv;
+ size_t i;
+ int j;
+
+ for (i = 0; i < RTEMS_ARRAY_SIZE(fds); ++i) {
+ fds[i] = open(more[i], O_WRONLY | O_TRUNC | O_CREAT, mode);
+ rtems_test_assert(fds[i] >= 0);
+ }
+
+ for (j = 0; j < 13; ++j) {
+ for (i = 0; i < RTEMS_ARRAY_SIZE(fds); ++i) {
+ write_kegs(fds[i], 1);
+ }
+ }
+
+ for (i = 0; i < RTEMS_ARRAY_SIZE(fds); ++i) {
+ rv = close(fds[i]);
+ rtems_test_assert(rv == 0);
+ }
+}
+
+static void remove_some_files(void)
+{
+ size_t i;
+
+ for (i = 0; i < RTEMS_ARRAY_SIZE(more); i += 2) {
+ int rv;
+
+ rv = unlink(more[i]);
+ rtems_test_assert(rv == 0);
+ }
+}
+
+void test(void)
+{
+ int fd;
+ int rv;
+ rtems_jffs2_info info;
+
+ init_keg();
+
+ fd = open("/", O_RDONLY);
+ rtems_test_assert(fd >= 0);
+
+ ASSERT_INFO(&info, &info_initial);
+
+ create_big_file();
+ ASSERT_INFO(&info, &info_big_created);
+
+ remove_big_file();
+ ASSERT_INFO(&info, &info_big_removed);
+
+ create_more_files();
+ ASSERT_INFO(&info, &info_more_files_created);
+
+ remove_some_files();
+ ASSERT_INFO(&info, &info_some_files_removed);
+
+ rv = close(fd);
+ rtems_test_assert(rv == 0);
+}
--
1.8.4.5
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