#include <linux/init.h>
#include <linux/fs.h>
#include <linux/proc_fs.h>
-#include <linux/smp_lock.h>
#include <linux/pagemap.h>
#include <linux/mtd/mtd.h>
#include <linux/interrupt.h>
unsigned int yaffs_auto_checkpoint = 1;
unsigned int yaffs_gc_control = 1;
unsigned int yaffs_bg_enable = 1;
+unsigned int yaffs_auto_select = 1;
/* Module Parameters */
module_param(yaffs_trace_mask, uint, 0644);
module_param(yaffs_auto_checkpoint, uint, 0644);
module_param(yaffs_gc_control, uint, 0644);
module_param(yaffs_bg_enable, uint, 0644);
+module_param(yaffs_auto_select, uint, 0644);
#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf)
struct yaffs_obj *obj = NULL;
struct yaffs_dev *dev;
struct yaffs_obj *parent = yaffs_inode_to_obj(dir);
- int error = -ENOSPC;
+ int error;
uid_t uid = current->cred->fsuid;
gid_t gid =
(dir->i_mode & S_ISGID) ? dir->i_gid : current->cred->fsgid;
yaffs_gross_lock(dev);
+ if (yaffs_get_n_free_chunks(dev) < 1) {
+ error = -ENOSPC;
+ goto err_out;
+ }
+
switch (mode & S_IFMT) {
default:
/* Special (socket, fifo, device...) */
break;
}
+ if (!obj) {
+ error = -ENOMEM;
+ goto err_out;
+ }
+
/* Can not call yaffs_get_inode() with gross lock held */
yaffs_gross_unlock(dev);
- if (!obj) {
- yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod failed making object");
- return -ENOMEM;
- }
inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj);
d_instantiate(dentry, inode);
"yaffs_mknod created object %d count = %d",
obj->obj_id, atomic_read(&inode->i_count));
yaffs_fill_inode_from_obj(dir, parent);
-
return 0;
+
+err_out:
+ yaffs_gross_unlock(dev);
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod error %d", error);
+ return error;
+
}
static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
obj);
if (link) {
- old_dentry->d_inode->i_nlink = yaffs_get_obj_link_count(obj);
+ set_nlink(old_dentry->d_inode, yaffs_get_obj_link_count(obj));
d_instantiate(dentry, old_dentry->d_inode);
atomic_inc(&old_dentry->d_inode->i_count);
yaffs_trace(YAFFS_TRACE_OS,
yaffs_trace(YAFFS_TRACE_OS, "yaffs_symlink");
+ if (strnlen(dentry->d_name.name, YAFFS_MAX_NAME_LENGTH + 1) >
+ YAFFS_MAX_NAME_LENGTH)
+ return -ENAMETOOLONG;
+
+ if (strnlen(symname, YAFFS_MAX_ALIAS_LENGTH + 1) >
+ YAFFS_MAX_ALIAS_LENGTH)
+ return -ENAMETOOLONG;
+
dev = yaffs_inode_to_obj(dir)->my_dev;
yaffs_gross_lock(dev);
obj = yaffs_create_symlink(yaffs_inode_to_obj(dir), dentry->d_name.name,
ret_val = yaffs_unlinker(obj, dentry->d_name.name);
if (ret_val == YAFFS_OK) {
- dentry->d_inode->i_nlink--;
+ inode_dec_link_count(dentry->d_inode);
dir->i_version++;
yaffs_gross_unlock(dev);
- mark_inode_dirty(dentry->d_inode);
update_dir_time(dir);
return 0;
}
return -ENOTEMPTY;
}
-static int yaffs_sync_object(struct file *file, int datasync)
+static int yaffs_sync_object(struct file *file,
+ loff_t start, loff_t end, int datasync)
{
struct yaffs_obj *obj;
yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, "yaffs_sync_object");
yaffs_gross_lock(dev);
- yaffs_flush_file(obj, 1, datasync);
+ yaffs_flush_file(obj, 1, datasync, 0);
yaffs_gross_unlock(dev);
return 0;
}
yaffs_gross_unlock(dev);
if (ret_val == YAFFS_OK) {
- if (target) {
- new_dentry->d_inode->i_nlink--;
- mark_inode_dirty(new_dentry->d_inode);
- }
+ if (target)
+ inode_dec_link_count(new_dentry->d_inode);
update_dir_time(old_dir);
if (old_dir != new_dir)
return error;
}
-#ifdef CONFIG_YAFFS_XATTR
static int yaffs_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
return error;
}
-#endif
-
static const struct inode_operations yaffs_dir_inode_operations = {
.create = yaffs_create,
.lookup = yaffs_lookup,
.mknod = yaffs_mknod,
.rename = yaffs_rename,
.setattr = yaffs_setattr,
-#ifdef CONFIG_YAFFS_XATTR
.setxattr = yaffs_setxattr,
.getxattr = yaffs_getxattr,
.listxattr = yaffs_listxattr,
.removexattr = yaffs_removexattr,
-#endif
};
/*-----------------------------------------------------------------*/
/* Directory search context allows us to unlock access to yaffs during
yaffs_gross_lock(dev);
- yaffs_flush_file(obj, 1, 0);
+ yaffs_flush_file(obj, 1, 0, 0);
yaffs_gross_unlock(dev);
unsigned char *pg_buf;
int ret;
struct yaffs_dev *dev;
+ loff_t pos = ((loff_t) pg->index) << PAGE_CACHE_SHIFT;
yaffs_trace(YAFFS_TRACE_OS,
- "yaffs_readpage_nolock at %08x, size %08x",
- (unsigned)(pg->index << PAGE_CACHE_SHIFT),
+ "yaffs_readpage_nolock at %lld, size %08x",
+ (long long)pos,
(unsigned)PAGE_CACHE_SIZE);
+
obj = yaffs_dentry_to_obj(f->f_dentry);
dev = obj->my_dev;
yaffs_gross_lock(dev);
- ret = yaffs_file_rd(obj, pg_buf,
- pg->index << PAGE_CACHE_SHIFT, PAGE_CACHE_SIZE);
+ ret = yaffs_file_rd(obj, pg_buf, pos, PAGE_CACHE_SIZE);
yaffs_gross_unlock(dev);
(int)obj->variant.file_variant.file_size, (int)inode->i_size);
n_written = yaffs_wr_file(obj, buffer,
- page->index << PAGE_CACHE_SHIFT, n_bytes, 0);
+ ((loff_t)page->index) << PAGE_CACHE_SHIFT,
+ n_bytes, 0);
yaffs_touch_super(dev);
if (obj) {
yaffs_trace(YAFFS_TRACE_OS,
"flushing obj %d", obj->obj_id);
- yaffs_flush_file(obj, 1, 0);
+ yaffs_flush_file(obj, 1, 0, 0);
}
}
}
yaffs_flush_inodes(sb);
yaffs_update_dirty_dirs(dev);
- yaffs_flush_whole_cache(dev);
+ yaffs_flush_whole_cache(dev, 1);
if (do_checkpoint)
yaffs_checkpoint_save(dev);
}
static const struct inode_operations yaffs_file_inode_operations = {
.setattr = yaffs_setattr,
-#ifdef CONFIG_YAFFS_XATTR
.setxattr = yaffs_setxattr,
.getxattr = yaffs_getxattr,
.listxattr = yaffs_listxattr,
.removexattr = yaffs_removexattr,
-#endif
};
static const struct inode_operations yaffs_symlink_inode_operations = {
.follow_link = yaffs_follow_link,
.put_link = yaffs_put_link,
.setattr = yaffs_setattr,
-#ifdef CONFIG_YAFFS_XATTR
.setxattr = yaffs_setxattr,
.getxattr = yaffs_getxattr,
.listxattr = yaffs_listxattr,
.removexattr = yaffs_removexattr,
-#endif
};
static void yaffs_fill_inode_from_obj(struct inode *inode,
struct yaffs_obj *obj)
{
+ u32 mode;
+
if (!inode || !obj) {
yaffs_trace(YAFFS_TRACE_OS,
"yaffs_fill_inode invalid parameters");
/* Check mode against the variant type
* and attempt to repair if broken. */
- u32 mode = obj->yst_mode;
+ mode = obj->yst_mode;
switch (obj->variant_type) {
case YAFFS_OBJECT_TYPE_FILE:
inode->i_ctime.tv_nsec = 0;
inode->i_size = yaffs_get_obj_length(obj);
inode->i_blocks = (inode->i_size + 511) >> 9;
- inode->i_nlink = yaffs_get_obj_link_count(obj);
+ set_nlink(inode, yaffs_get_obj_link_count(obj));
yaffs_trace(YAFFS_TRACE_OS,
"yaffs_fill_inode mode %x uid %d gid %d size %d count %d",
inode->i_mode, inode->i_uid, inode->i_gid,
static void yaffs_put_super(struct super_block *sb)
{
struct yaffs_dev *dev = yaffs_super_to_dev(sb);
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
yaffs_trace(YAFFS_TRACE_OS, "yaffs_put_super");
}
kfree(dev);
+
+ if (mtd && mtd->sync)
+ mtd->sync(mtd);
+
+ if (mtd)
+ put_mtd_device(mtd);
}
-static void yaffs_mtd_put_super(struct super_block *sb)
+/* the function only is used to change dev->read_only when this file system
+ * is remounted.
+ */
+static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data)
{
- struct mtd_info *mtd = yaffs_dev_to_mtd(yaffs_super_to_dev(sb));
+ int read_only = 0;
+ struct mtd_info *mtd;
+ struct yaffs_dev *dev = 0;
- if (mtd->sync)
- mtd->sync(mtd);
+ /* Get the device */
+ mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
+ if (!mtd) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "MTD device #%u doesn't appear to exist",
+ MINOR(sb->s_dev));
+ return 1;
+ }
+
+ /* Check it's NAND */
+ if (mtd->type != MTD_NANDFLASH) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "MTD device is not NAND it's type %d",
+ mtd->type);
+ return 1;
+ }
+
+ read_only = ((*flags & MS_RDONLY) != 0);
+ if (!read_only && !(mtd->flags & MTD_WRITEABLE)) {
+ read_only = 1;
+ printk(KERN_INFO
+ "yaffs: mtd is read only, setting superblock read only");
+ *flags |= MS_RDONLY;
+ }
+
+ dev = sb->s_fs_info;
+ dev->read_only = read_only;
- put_mtd_device(mtd);
+ return 0;
}
+
static const struct super_operations yaffs_super_ops = {
.statfs = yaffs_statfs,
.put_super = yaffs_put_super,
.evict_inode = yaffs_evict_inode,
.sync_fs = yaffs_sync_fs,
.write_super = yaffs_write_super,
+ .remount_fs = yaffs_remount_fs,
};
static struct super_block *yaffs_internal_read_super(int yaffs_version,
/* Get the device */
mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
- if (!mtd) {
+ if (IS_ERR(mtd)) {
yaffs_trace(YAFFS_TRACE_ALWAYS,
"MTD device #%u doesn't appear to exist",
MINOR(sb->s_dev));
yaffs_trace(YAFFS_TRACE_OS, " erasesize %d", mtd->erasesize);
yaffs_trace(YAFFS_TRACE_OS, " size %lld", mtd->size);
-#ifdef CONFIG_YAFFS_AUTO_YAFFS2
-
- if (yaffs_version == 1 && mtd->writesize >= 2048) {
+ if (yaffs_auto_select && yaffs_version == 1 && mtd->writesize >= 2048) {
yaffs_trace(YAFFS_TRACE_ALWAYS, "auto selecting yaffs2");
yaffs_version = 2;
}
- /* Added NCB 26/5/2006 for completeness */
- if (yaffs_version == 2 && !options.inband_tags &&
+ if (yaffs_auto_select && yaffs_version == 2 && !options.inband_tags &&
mtd->writesize == 512) {
yaffs_trace(YAFFS_TRACE_ALWAYS, "auto selecting yaffs1");
yaffs_version = 1;
}
-#endif
if (yaffs_version == 2) {
/* Check for version 2 style functions */
kfree(context);
dev = NULL;
context = NULL;
- }
- if (!dev) {
/* Deep shit could not allocate device structure */
yaffs_trace(YAFFS_TRACE_ALWAYS,
"yaffs_read_super failed trying to allocate yaffs_dev");
param->n_caches = (options.no_cache) ? 0 : 10;
param->inband_tags = options.inband_tags;
-#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD
param->disable_lazy_load = 1;
-#endif
-#ifdef CONFIG_YAFFS_XATTR
param->enable_xattr = 1;
-#endif
if (options.lazy_loading_overridden)
param->disable_lazy_load = !options.lazy_loading_enabled;
-#ifdef CONFIG_YAFFS_DISABLE_TAGS_ECC
- param->no_tags_ecc = 1;
-#endif
-
-#ifdef CONFIG_YAFFS_DISABLE_BACKGROUND
-#else
param->defered_dir_update = 1;
-#endif
if (options.tags_ecc_overridden)
param->no_tags_ecc = !options.tags_ecc_on;
-#ifdef CONFIG_YAFFS_EMPTY_LOST_AND_FOUND
param->empty_lost_n_found = 1;
-#endif
-#ifdef CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING
- param->refresh_period = 0;
-#else
param->refresh_period = 500;
-#endif
-
-#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
- param->always_check_erased = 1;
-#endif
if (options.empty_lost_and_found_overridden)
param->empty_lost_n_found = options.empty_lost_and_found;
yaffs_dev_to_lc(dev)->put_super_fn = yaffs_mtd_put_super;
param->sb_dirty_fn = yaffs_touch_super;
- param->gc_control = yaffs_gc_control_callback;
+ param->gc_control_fn = yaffs_gc_control_callback;
yaffs_dev_to_lc(dev)->super = sb;
-#ifndef CONFIG_YAFFS_DOES_ECC
param->use_nand_ecc = 1;
-#endif
param->skip_checkpt_rd = options.skip_checkpoint_read;
param->skip_checkpt_wr = options.skip_checkpoint_write;
if (!context->bg_thread)
param->defered_dir_update = 0;
+ sb->s_maxbytes = yaffs_max_file_size(dev);
+
/* Release lock before yaffs_get_inode() */
yaffs_gross_unlock(dev);
return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
}
-static int yaffs_read_super(struct file_system_type *fs,
+static struct dentry *yaffs_mount(struct file_system_type *fs,
int flags, const char *dev_name,
- void *data, struct vfsmount *mnt)
+ void *data)
{
-
- return get_sb_bdev(fs, flags, dev_name, data,
- yaffs_internal_read_super_mtd, mnt);
+ return mount_bdev(fs, flags, dev_name, data,
+ yaffs_internal_read_super_mtd);
}
static struct file_system_type yaffs_fs_type = {
.owner = THIS_MODULE,
.name = "yaffs",
- .get_sb = yaffs_read_super,
+ .mount = yaffs_mount,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
-#ifdef CONFIG_YAFFS_YAFFS2
-
static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
int silent)
{
return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
}
-static int yaffs2_read_super(struct file_system_type *fs,
- int flags, const char *dev_name, void *data,
- struct vfsmount *mnt)
+static struct dentry *yaffs2_mount(struct file_system_type *fs,
+ int flags, const char *dev_name, void *data)
{
- return get_sb_bdev(fs, flags, dev_name, data,
- yaffs2_internal_read_super_mtd, mnt);
+ return mount_bdev(fs, flags, dev_name, data,
+ yaffs2_internal_read_super_mtd);
}
static struct file_system_type yaffs2_fs_type = {
.owner = THIS_MODULE,
.name = "yaffs2",
- .get_sb = yaffs2_read_super,
+ .mount = yaffs2_mount,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
-#endif /* CONFIG_YAFFS_YAFFS2 */
+
static struct proc_dir_entry *my_proc_entry;
static char *yaffs_dump_dev_part1(char *buf, struct yaffs_dev *dev)
{
- buf +=
- sprintf(buf, "data_bytes_per_chunk.. %d\n",
- dev->data_bytes_per_chunk);
+ buf += sprintf(buf, "max file size......... %lld\n",
+ (long long) yaffs_max_file_size(dev));
+ buf += sprintf(buf, "data_bytes_per_chunk.. %d\n",
+ dev->data_bytes_per_chunk);
buf += sprintf(buf, "chunk_grp_bits........ %d\n", dev->chunk_grp_bits);
buf += sprintf(buf, "chunk_grp_size........ %d\n", dev->chunk_grp_size);
buf +=
buf += sprintf(buf, "n_gc_blocks........... %u\n", dev->n_gc_blocks);
buf += sprintf(buf, "bg_gcs................ %u\n", dev->bg_gcs);
buf +=
- sprintf(buf, "n_retired_writes...... %u\n", dev->n_retired_writes);
+ sprintf(buf, "n_retried_writes...... %u\n", dev->n_retried_writes);
buf +=
sprintf(buf, "n_retired_blocks...... %u\n", dev->n_retired_blocks);
buf += sprintf(buf, "n_ecc_fixed........... %u\n", dev->n_ecc_fixed);
}
-/**
- * Set the verbosity of the warnings and error messages.
- *
- * Note that the names can only be a..z or _ with the current code.
- */
-
-static struct {
- char *mask_name;
- unsigned mask_bitfield;
-} mask_flags[] = {
- {"allocate", YAFFS_TRACE_ALLOCATE},
- {"always", YAFFS_TRACE_ALWAYS},
- {"background", YAFFS_TRACE_BACKGROUND},
- {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS},
- {"buffers", YAFFS_TRACE_BUFFERS},
- {"bug", YAFFS_TRACE_BUG},
- {"checkpt", YAFFS_TRACE_CHECKPOINT},
- {"deletion", YAFFS_TRACE_DELETION},
- {"erase", YAFFS_TRACE_ERASE},
- {"error", YAFFS_TRACE_ERROR},
- {"gc_detail", YAFFS_TRACE_GC_DETAIL},
- {"gc", YAFFS_TRACE_GC},
- {"lock", YAFFS_TRACE_LOCK},
- {"mtd", YAFFS_TRACE_MTD},
- {"nandaccess", YAFFS_TRACE_NANDACCESS},
- {"os", YAFFS_TRACE_OS},
- {"scan_debug", YAFFS_TRACE_SCAN_DEBUG},
- {"scan", YAFFS_TRACE_SCAN},
- {"mount", YAFFS_TRACE_MOUNT},
- {"tracing", YAFFS_TRACE_TRACING},
- {"sync", YAFFS_TRACE_SYNC},
- {"write", YAFFS_TRACE_WRITE},
- {"verify", YAFFS_TRACE_VERIFY},
- {"verify_nand", YAFFS_TRACE_VERIFY_NAND},
- {"verify_full", YAFFS_TRACE_VERIFY_FULL},
- {"verify_all", YAFFS_TRACE_VERIFY_ALL},
- {"all", 0xffffffff},
- {"none", 0},
- {NULL, 0},
-};
-
-#define MAX_MASK_NAME_LENGTH 40
-static int yaffs_proc_write_trace_options(struct file *file, const char *buf,
- unsigned long count, void *data)
-{
- unsigned rg = 0, mask_bitfield;
- char *end;
- char *mask_name;
- const char *x;
- char substring[MAX_MASK_NAME_LENGTH + 1];
- int i;
- int done = 0;
- int add, len = 0;
- int pos = 0;
-
- rg = yaffs_trace_mask;
-
- while (!done && (pos < count)) {
- done = 1;
- while ((pos < count) && isspace(buf[pos]))
- pos++;
-
- switch (buf[pos]) {
- case '+':
- case '-':
- case '=':
- add = buf[pos];
- pos++;
- break;
-
- default:
- add = ' ';
- break;
- }
- mask_name = NULL;
-
- mask_bitfield = simple_strtoul(buf + pos, &end, 0);
-
- if (end > buf + pos) {
- mask_name = "numeral";
- len = end - (buf + pos);
- pos += len;
- done = 0;
- } else {
- for (x = buf + pos, i = 0;
- (*x == '_' || (*x >= 'a' && *x <= 'z')) &&
- i < MAX_MASK_NAME_LENGTH; x++, i++, pos++)
- substring[i] = *x;
- substring[i] = '\0';
-
- for (i = 0; mask_flags[i].mask_name != NULL; i++) {
- if (strcmp(substring, mask_flags[i].mask_name)
- == 0) {
- mask_name = mask_flags[i].mask_name;
- mask_bitfield =
- mask_flags[i].mask_bitfield;
- done = 0;
- break;
- }
- }
- }
-
- if (mask_name != NULL) {
- done = 0;
- switch (add) {
- case '-':
- rg &= ~mask_bitfield;
- break;
- case '+':
- rg |= mask_bitfield;
- break;
- case '=':
- rg = mask_bitfield;
- break;
- default:
- rg |= mask_bitfield;
- break;
- }
- }
- }
-
- yaffs_trace_mask = rg | YAFFS_TRACE_ALWAYS;
-
- printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_trace_mask);
-
- if (rg & YAFFS_TRACE_ALWAYS) {
- for (i = 0; mask_flags[i].mask_name != NULL; i++) {
- char flag;
- flag = ((rg & mask_flags[i].mask_bitfield) ==
- mask_flags[i].mask_bitfield) ? '+' : '-';
- printk(KERN_DEBUG "%c%s\n", flag,
- mask_flags[i].mask_name);
- }
- }
-
- return count;
-}
-
-static int yaffs_proc_write(struct file *file, const char *buf,
- unsigned long count, void *data)
-{
- return yaffs_proc_write_trace_options(file, buf, count, data);
-}
/* Stuff to handle installation of file systems */
struct file_system_to_install {
yaffs_trace(YAFFS_TRACE_ALWAYS,
"yaffs built " __DATE__ " " __TIME__ " Installing.");
-#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
- yaffs_trace(YAFFS_TRACE_ALWAYS,
- "\n\nYAFFS-WARNING CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED selected.\n\n\n");
-#endif
-
mutex_init(&yaffs_context_lock);
/* Install the proc_fs entries */
S_IRUGO | S_IFREG, NULL);
if (my_proc_entry) {
- my_proc_entry->write_proc = yaffs_proc_write;
+ my_proc_entry->write_proc = NULL;
my_proc_entry->read_proc = yaffs_proc_read;
my_proc_entry->data = NULL;
} else {
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