X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_fs.c;h=8b11f4034c4896c54d6099d8256027c77b521f86;hp=2d0f8a068ef0755038db472a9068e4aee4944f9a;hb=b4a902328423692f296c9118bf6bfaa057ccc72c;hpb=d8ff7698762028c417be5dbc102fe882be0f99c5 diff --git a/yaffs_fs.c b/yaffs_fs.c index 2d0f8a0..8b11f40 100644 --- a/yaffs_fs.c +++ b/yaffs_fs.c @@ -1,7 +1,7 @@ /* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * - * Copyright (C) 2002-2007 Aleph One Ltd. + * Copyright (C) 2002-2009 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning @@ -32,11 +32,11 @@ */ const char *yaffs_fs_c_version = - "$Id: yaffs_fs.c,v 1.68 2008-07-23 03:35:12 charles Exp $"; + "$Id: yaffs_fs.c,v 1.96 2010-02-25 22:41:46 charles Exp $"; extern const char *yaffs_guts_c_version; #include -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) #include #endif #include @@ -54,10 +54,13 @@ extern const char *yaffs_guts_c_version; #include "asm/div64.h" -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) + +#define LOCK_TRACE 0 + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) #include /* Added NCB 15-8-2003 */ -#include +#include #define UnlockPage(p) unlock_page(p) #define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) @@ -70,123 +73,153 @@ extern const char *yaffs_guts_c_version; #define BDEVNAME_SIZE 0 #define yaffs_devname(sb, buf) kdevname(sb->s_dev) -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)) /* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */ #define __user #endif #endif -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)) -#define YPROC_ROOT &proc_root +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)) +#define YPROC_ROOT (&proc_root) #else #define YPROC_ROOT NULL #endif -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) #define WRITE_SIZE_STR "writesize" -#define WRITE_SIZE(mtd) (mtd)->writesize +#define WRITE_SIZE(mtd) ((mtd)->writesize) #else #define WRITE_SIZE_STR "oobblock" -#define WRITE_SIZE(mtd) (mtd)->oobblock +#define WRITE_SIZE(mtd) ((mtd)->oobblock) #endif -#include +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27)) +#define YAFFS_USE_WRITE_BEGIN_END 1 +#else +#define YAFFS_USE_WRITE_BEGIN_END 0 +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)) +static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size) +{ + uint64_t result = partition_size; + do_div(result, block_size); + return (uint32_t)result; +} +#else +#define YCALCBLOCKS(s, b) ((s)/(b)) +#endif + +#include #include "yportenv.h" +#include "yaffs_trace.h" #include "yaffs_guts.h" +#include "yaffs_linux.h" + #include #include "yaffs_mtdif.h" #include "yaffs_mtdif1.h" #include "yaffs_mtdif2.h" -unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS; +unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS | YAFFS_TRACE_ALWAYS; unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; +unsigned int yaffs_auto_checkpoint = 1; /* Module Parameters */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) -module_param(yaffs_traceMask,uint,0644); -module_param(yaffs_wr_attempts,uint,0644); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +module_param(yaffs_traceMask, uint, 0644); +module_param(yaffs_wr_attempts, uint, 0644); +module_param(yaffs_auto_checkpoint, uint, 0644); #else -MODULE_PARM(yaffs_traceMask,"i"); -MODULE_PARM(yaffs_wr_attempts,"i"); +MODULE_PARM(yaffs_traceMask, "i"); +MODULE_PARM(yaffs_wr_attempts, "i"); +MODULE_PARM(yaffs_auto_checkpoint, "i"); #endif -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)) +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)) /* use iget and read_inode */ -#define Y_IGET(sb,inum) iget((sb),(inum)) +#define Y_IGET(sb, inum) iget((sb), (inum)) static void yaffs_read_inode(struct inode *inode); #else /* Call local equivalent */ #define YAFFS_USE_OWN_IGET -#define Y_IGET(sb,inum) yaffs_iget((sb),(inum)) +#define Y_IGET(sb, inum) yaffs_iget((sb), (inum)) -static struct inode * yaffs_iget(struct super_block *sb, unsigned long ino); +static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino); #endif /*#define T(x) printk x */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) -#define yaffs_InodeToObjectLV(iptr) (iptr)->i_private +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) +#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private) #else -#define yaffs_InodeToObjectLV(iptr) (iptr)->u.generic_ip +#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip) #endif #define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr))) #define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode) -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) #define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info) #else #define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp) #endif + +#define update_dir_time(dir) do {\ + (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \ + } while(0) + static void yaffs_put_super(struct super_block *sb); static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, - loff_t * pos); + loff_t *pos); +static ssize_t yaffs_hold_space(struct file *f); +static void yaffs_release_space(struct file *f); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) static int yaffs_file_flush(struct file *file, fl_owner_t id); #else static int yaffs_file_flush(struct file *file); #endif static int yaffs_sync_object(struct file *file, struct dentry *dentry, - int datasync); + int datasync); static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *n); static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, - struct nameidata *n); + struct nameidata *n); #else static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode); static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry); #endif static int yaffs_link(struct dentry *old_dentry, struct inode *dir, - struct dentry *dentry); + struct dentry *dentry); static int yaffs_unlink(struct inode *dir, struct dentry *dentry); static int yaffs_symlink(struct inode *dir, struct dentry *dentry, - const char *symname); + const char *symname); static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - dev_t dev); + dev_t dev); #else static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - int dev); + int dev); #endif static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry); static int yaffs_setattr(struct dentry *dentry, struct iattr *attr); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) static int yaffs_sync_fs(struct super_block *sb, int wait); static void yaffs_write_super(struct super_block *sb); #else @@ -194,9 +227,9 @@ static int yaffs_sync_fs(struct super_block *sb); static int yaffs_write_super(struct super_block *sb); #endif -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf); -#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf); #else static int yaffs_statfs(struct super_block *sb, struct statfs *buf); @@ -210,19 +243,31 @@ static void yaffs_delete_inode(struct inode *); static void yaffs_clear_inode(struct inode *); static int yaffs_readpage(struct file *file, struct page *page); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_writepage(struct page *page, struct writeback_control *wbc); #else static int yaffs_writepage(struct page *page); #endif + + +#if (YAFFS_USE_WRITE_BEGIN_END != 0) +static int yaffs_write_begin(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata); +static int yaffs_write_end(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *pg, void *fsdadata); +#else static int yaffs_prepare_write(struct file *f, struct page *pg, - unsigned offset, unsigned to); + unsigned offset, unsigned to); static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, - unsigned to); + unsigned to); -static int yaffs_readlink(struct dentry *dentry, char __user * buffer, - int buflen); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) +#endif + +static int yaffs_readlink(struct dentry *dentry, char __user *buffer, + int buflen); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); #else static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); @@ -231,12 +276,17 @@ static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); static struct address_space_operations yaffs_file_address_operations = { .readpage = yaffs_readpage, .writepage = yaffs_writepage, +#if (YAFFS_USE_WRITE_BEGIN_END > 0) + .write_begin = yaffs_write_begin, + .write_end = yaffs_write_end, +#else .prepare_write = yaffs_prepare_write, .commit_write = yaffs_commit_write, +#endif }; -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,22)) -static struct file_operations yaffs_file_operations = { +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22)) +static const struct file_operations yaffs_file_operations = { .read = do_sync_read, .write = do_sync_write, .aio_read = generic_file_aio_read, @@ -246,11 +296,12 @@ static struct file_operations yaffs_file_operations = { .fsync = yaffs_sync_object, .splice_read = generic_file_splice_read, .splice_write = generic_file_splice_write, + .llseek = generic_file_llseek, }; -#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) -static struct file_operations yaffs_file_operations = { +static const struct file_operations yaffs_file_operations = { .read = do_sync_read, .write = do_sync_write, .aio_read = generic_file_aio_read, @@ -263,29 +314,40 @@ static struct file_operations yaffs_file_operations = { #else -static struct file_operations yaffs_file_operations = { +static const struct file_operations yaffs_file_operations = { .read = generic_file_read, .write = generic_file_write, .mmap = generic_file_mmap, .flush = yaffs_file_flush, .fsync = yaffs_sync_object, -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) .sendfile = generic_file_sendfile, #endif }; #endif -static struct inode_operations yaffs_file_inode_operations = { +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)) +static void zero_user_segment(struct page *page, unsigned start, unsigned end) +{ + void * kaddr = kmap_atomic(page, KM_USER0); + memset(kaddr + start, 0, end - start); + kunmap_atomic(kaddr, KM_USER0); + flush_dcache_page(page); +} +#endif + + +static const struct inode_operations yaffs_file_inode_operations = { .setattr = yaffs_setattr, }; -static struct inode_operations yaffs_symlink_inode_operations = { +static const struct inode_operations yaffs_symlink_inode_operations = { .readlink = yaffs_readlink, .follow_link = yaffs_follow_link, .setattr = yaffs_setattr, }; -static struct inode_operations yaffs_dir_inode_operations = { +static const struct inode_operations yaffs_dir_inode_operations = { .create = yaffs_create, .lookup = yaffs_lookup, .link = yaffs_link, @@ -298,13 +360,13 @@ static struct inode_operations yaffs_dir_inode_operations = { .setattr = yaffs_setattr, }; -static struct file_operations yaffs_dir_operations = { +static const struct file_operations yaffs_dir_operations = { .read = generic_read_dir, .readdir = yaffs_readdir, .fsync = yaffs_sync_object, }; -static struct super_operations yaffs_super_ops = { +static const struct super_operations yaffs_super_ops = { .statfs = yaffs_statfs, #ifndef YAFFS_USE_OWN_IGET @@ -319,23 +381,138 @@ static struct super_operations yaffs_super_ops = { .sync_fs = yaffs_sync_fs, .write_super = yaffs_write_super, }; + +static void yaffs_GrossLock(yaffs_Device *dev) +{ + T(LOCK_TRACE && YAFFS_TRACE_OS, ("yaffs locking %p\n", current)); + down(&(yaffs_DeviceToContext(dev)->grossLock)); + T(LOCK_TRACE && YAFFS_TRACE_OS, ("yaffs locked %p\n", current)); +} + +static void yaffs_GrossUnlock(yaffs_Device *dev) +{ + T(LOCK_TRACE && YAFFS_TRACE_OS, ("yaffs unlocking %p\n", current)); + up(&(yaffs_DeviceToContext(dev)->grossLock)); +} + + +/*-----------------------------------------------------------------*/ +/* Directory search context allows us to unlock access to yaffs during + * filldir without causing problems with the directory being modified. + * This is similar to the tried and tested mechanism used in yaffs direct. + * + * A search context iterates along a doubly linked list of siblings in the + * directory. If the iterating object is deleted then this would corrupt + * the list iteration, likely causing a crash. The search context avoids + * this by using the removeObjectCallback to move the search context to the + * next object before the object is deleted. + * + * Many readdirs (and thus seach conexts) may be alive simulateously so + * each yaffs_Device has a list of these. + * + * A seach context lives for the duration of a readdir. + * + * All these functions must be called while yaffs is locked. + */ + +struct yaffs_SearchContext { + yaffs_Device *dev; + yaffs_Object *dirObj; + yaffs_Object *nextReturn; + struct ylist_head others; +}; + +/* + * yaffs_NewSearch() creates a new search context, initialises it and + * adds it to the device's search context list. + * + * Called at start of readdir. + */ +static struct yaffs_SearchContext * yaffs_NewSearch(yaffs_Object *dir) +{ + yaffs_Device *dev = dir->myDev; + struct yaffs_SearchContext *sc = YMALLOC(sizeof(struct yaffs_SearchContext)); + if(sc){ + sc->dirObj = dir; + sc->dev = dev; + if( ylist_empty(&sc->dirObj->variant.directoryVariant.children)) + sc->nextReturn = NULL; + else + sc->nextReturn = ylist_entry( + dir->variant.directoryVariant.children.next, + yaffs_Object,siblings); + YINIT_LIST_HEAD(&sc->others); + ylist_add(&sc->others,&(yaffs_DeviceToContext(dev)->searchContexts)); + } + return sc; +} -static void yaffs_GrossLock(yaffs_Device * dev) +/* + * yaffs_EndSearch() disposes of a search context and cleans up. + */ +static void yaffs_EndSearch(struct yaffs_SearchContext * sc) { - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs locking\n")); + if(sc){ + ylist_del(&sc->others); + YFREE(sc); + } +} - down(&dev->grossLock); +/* + * yaffs_SearchAdvance() moves a search context to the next object. + * Called when the search iterates or when an object removal causes + * the search context to be moved to the next object. + */ +static void yaffs_SearchAdvance(struct yaffs_SearchContext *sc) +{ + if(!sc) + return; + + if( sc->nextReturn == NULL || + ylist_empty(&sc->dirObj->variant.directoryVariant.children)) + sc->nextReturn = NULL; + else { + struct ylist_head *next = sc->nextReturn->siblings.next; + + if( next == &sc->dirObj->variant.directoryVariant.children) + sc->nextReturn = NULL; /* end of list */ + else + sc->nextReturn = ylist_entry(next,yaffs_Object,siblings); + } } -static void yaffs_GrossUnlock(yaffs_Device * dev) +/* + * yaffs_RemoveObjectCallback() is called when an object is unlinked. + * We check open search contexts and advance any which are currently + * on the object being iterated. + */ +static void yaffs_RemoveObjectCallback(yaffs_Object *obj) { - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs unlocking\n")); - up(&dev->grossLock); + + struct ylist_head *i; + struct yaffs_SearchContext *sc; + struct ylist_head *search_contexts = &(yaffs_DeviceToContext(obj->myDev)->searchContexts); + + + /* Iterate through the directory search contexts. + * If any are currently on the object being removed, then advance + * the search context to the next object to prevent a hanging pointer. + */ + ylist_for_each(i, search_contexts) { + if (i) { + sc = ylist_entry(i, struct yaffs_SearchContext,others); + if(sc->nextReturn == obj) + yaffs_SearchAdvance(sc); + } + } } -static int yaffs_readlink(struct dentry *dentry, char __user * buffer, - int buflen) + +/*-----------------------------------------------------------------*/ + +static int yaffs_readlink(struct dentry *dentry, char __user *buffer, + int buflen) { unsigned char *alias; int ret; @@ -356,7 +533,7 @@ static int yaffs_readlink(struct dentry *dentry, char __user * buffer, return ret; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) #else static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) @@ -372,32 +549,31 @@ static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) yaffs_GrossUnlock(dev); - if (!alias) - { + if (!alias) { ret = -ENOMEM; goto out; - } + } ret = vfs_follow_link(nd, alias); kfree(alias); out: -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) - return ERR_PTR (ret); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) + return ERR_PTR(ret); #else return ret; #endif } struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, - yaffs_Object * obj); + yaffs_Object *obj); /* * Lookup is used to find objects in the fs */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, - struct nameidata *n) + struct nameidata *n) #else static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) #endif @@ -410,12 +586,11 @@ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) yaffs_GrossLock(dev); T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_lookup for %d:%s\n", - yaffs_InodeToObject(dir)->objectId, dentry->d_name.name)); + ("yaffs_lookup for %d:%s\n", + yaffs_InodeToObject(dir)->objectId, dentry->d_name.name)); - obj = - yaffs_FindObjectByName(yaffs_InodeToObject(dir), - dentry->d_name.name); + obj = yaffs_FindObjectByName(yaffs_InodeToObject(dir), + dentry->d_name.name); obj = yaffs_GetEquivalentObject(obj); /* in case it was a hardlink */ @@ -424,13 +599,13 @@ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) if (obj) { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_lookup found %d\n", obj->objectId)); + ("yaffs_lookup found %d\n", obj->objectId)); inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); if (inode) { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_loookup dentry \n")); + ("yaffs_loookup dentry \n")); /* #if 0 asserted by NCB for 2.5/6 compatability - falls through to * d_add even if NULL inode */ #if 0 @@ -443,7 +618,7 @@ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) } } else { - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_lookup not found\n")); + T(YAFFS_TRACE_OS, ("yaffs_lookup not found\n")); } @@ -452,8 +627,6 @@ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) d_add(dentry, inode); return NULL; - /* return (ERR_PTR(-EIO)); */ - } @@ -465,8 +638,8 @@ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) static void yaffs_put_inode(struct inode *inode) { T(YAFFS_TRACE_OS, - ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino, - atomic_read(&inode->i_count))); + ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino, + atomic_read(&inode->i_count))); } #endif @@ -480,9 +653,9 @@ static void yaffs_clear_inode(struct inode *inode) obj = yaffs_InodeToObject(inode); T(YAFFS_TRACE_OS, - ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino, - atomic_read(&inode->i_count), - obj ? "object exists" : "null object")); + ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino, + atomic_read(&inode->i_count), + obj ? "object exists" : "null object")); if (obj) { dev = obj->myDev; @@ -517,23 +690,23 @@ static void yaffs_delete_inode(struct inode *inode) yaffs_Device *dev; T(YAFFS_TRACE_OS, - ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino, - atomic_read(&inode->i_count), - obj ? "object exists" : "null object")); + ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino, + atomic_read(&inode->i_count), + obj ? "object exists" : "null object")); if (obj) { dev = obj->myDev; yaffs_GrossLock(dev); - yaffs_DeleteFile(obj); + yaffs_DeleteObject(obj); yaffs_GrossUnlock(dev); } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) - truncate_inode_pages (&inode->i_data, 0); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) + truncate_inode_pages(&inode->i_data, 0); #endif clear_inode(inode); } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) static int yaffs_file_flush(struct file *file, fl_owner_t id) #else static int yaffs_file_flush(struct file *file) @@ -544,12 +717,12 @@ static int yaffs_file_flush(struct file *file) yaffs_Device *dev = obj->myDev; T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_file_flush object %d (%s)\n", obj->objectId, - obj->dirty ? "dirty" : "clean")); + ("yaffs_file_flush object %d (%s)\n", obj->objectId, + obj->dirty ? "dirty" : "clean")); yaffs_GrossLock(dev); - yaffs_FlushFile(obj, 1); + yaffs_FlushFile(obj, 1, 0); yaffs_GrossUnlock(dev); @@ -566,15 +739,15 @@ static int yaffs_readpage_nolock(struct file *f, struct page *pg) yaffs_Device *dev; - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage at %08x, size %08x\n", - (unsigned)(pg->index << PAGE_CACHE_SHIFT), - (unsigned)PAGE_CACHE_SIZE)); + T(YAFFS_TRACE_OS, ("yaffs_readpage_nolock at %08x, size %08x\n", + (unsigned)(pg->index << PAGE_CACHE_SHIFT), + (unsigned)PAGE_CACHE_SIZE)); obj = yaffs_DentryToObject(f->f_dentry); dev = obj->myDev; -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) BUG_ON(!PageLocked(pg)); #else if (!PageLocked(pg)) @@ -586,9 +759,9 @@ static int yaffs_readpage_nolock(struct file *f, struct page *pg) yaffs_GrossLock(dev); - ret = - yaffs_ReadDataFromFile(obj, pg_buf, pg->index << PAGE_CACHE_SHIFT, - PAGE_CACHE_SIZE); + ret = yaffs_ReadDataFromFile(obj, pg_buf, + pg->index << PAGE_CACHE_SHIFT, + PAGE_CACHE_SIZE); yaffs_GrossUnlock(dev); @@ -606,7 +779,7 @@ static int yaffs_readpage_nolock(struct file *f, struct page *pg) flush_dcache_page(pg); kunmap(pg); - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage done\n")); + T(YAFFS_TRACE_OS, ("yaffs_readpage_nolock done\n")); return ret; } @@ -619,53 +792,64 @@ static int yaffs_readpage_unlock(struct file *f, struct page *pg) static int yaffs_readpage(struct file *f, struct page *pg) { - return yaffs_readpage_unlock(f, pg); + int ret; + + T(YAFFS_TRACE_OS, ("yaffs_readpage\n")); + ret=yaffs_readpage_unlock(f, pg); + T(YAFFS_TRACE_OS, ("yaffs_readpage done\n")); + return ret; } /* writepage inspired by/stolen from smbfs */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_writepage(struct page *page, struct writeback_control *wbc) #else static int yaffs_writepage(struct page *page) #endif { struct address_space *mapping = page->mapping; - loff_t offset = (loff_t) page->index << PAGE_CACHE_SHIFT; struct inode *inode; unsigned long end_index; char *buffer; yaffs_Object *obj; int nWritten = 0; unsigned nBytes; + loff_t i_size; if (!mapping) BUG(); inode = mapping->host; if (!inode) BUG(); + i_size = i_size_read(inode); - if (offset > inode->i_size) { - T(YAFFS_TRACE_OS, - (KERN_DEBUG - "yaffs_writepage at %08x, inode size = %08x!!!\n", - (unsigned)(page->index << PAGE_CACHE_SHIFT), - (unsigned)inode->i_size)); - T(YAFFS_TRACE_OS, - (KERN_DEBUG " -> don't care!!\n")); - unlock_page(page); - return 0; - } + end_index = i_size >> PAGE_CACHE_SHIFT; - end_index = inode->i_size >> PAGE_CACHE_SHIFT; - - /* easy case */ - if (page->index < end_index) { + if(page->index < end_index) nBytes = PAGE_CACHE_SIZE; - } else { - nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1); + else { + nBytes = i_size & (PAGE_CACHE_SIZE -1); + + if (page->index > end_index || !nBytes) { + T(YAFFS_TRACE_OS, + ("yaffs_writepage at %08x, inode size = %08x!!!\n", + (unsigned)(page->index << PAGE_CACHE_SHIFT), + (unsigned)inode->i_size)); + T(YAFFS_TRACE_OS, + (" -> don't care!!\n")); + + zero_user_segment(page,0,PAGE_CACHE_SIZE); + set_page_writeback(page); + unlock_page(page); + end_page_writeback(page); + return 0; + } } + if(nBytes != PAGE_CACHE_SIZE) + zero_user_segment(page,nBytes,PAGE_CACHE_SIZE); + get_page(page); buffer = kmap(page); @@ -674,126 +858,228 @@ static int yaffs_writepage(struct page *page) yaffs_GrossLock(obj->myDev); T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_writepage at %08x, size %08x\n", - (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes)); + ("yaffs_writepage at %08x, size %08x\n", + (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes)); T(YAFFS_TRACE_OS, - (KERN_DEBUG "writepag0: obj = %05x, ino = %05x\n", - (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); + ("writepag0: obj = %05x, ino = %05x\n", + (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); - nWritten = - yaffs_WriteDataToFile(obj, buffer, page->index << PAGE_CACHE_SHIFT, - nBytes, 0); + nWritten = yaffs_WriteDataToFile(obj, buffer, + page->index << PAGE_CACHE_SHIFT, nBytes, 0); T(YAFFS_TRACE_OS, - (KERN_DEBUG "writepag1: obj = %05x, ino = %05x\n", - (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); + ("writepag1: obj = %05x, ino = %05x\n", + (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); yaffs_GrossUnlock(obj->myDev); kunmap(page); - SetPageUptodate(page); - UnlockPage(page); + set_page_writeback(page); + unlock_page(page); + end_page_writeback(page); put_page(page); return (nWritten == nBytes) ? 0 : -ENOSPC; } + +#if (YAFFS_USE_WRITE_BEGIN_END > 0) +static int yaffs_write_begin(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) +{ + struct page *pg = NULL; + pgoff_t index = pos >> PAGE_CACHE_SHIFT; + + int ret = 0; + int space_held = 0; + + /* Get a page */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28) + pg = grab_cache_page_write_begin(mapping, index, flags); +#else + pg = __grab_cache_page(mapping, index); +#endif + + *pagep = pg; + if (!pg) { + ret = -ENOMEM; + goto out; + } + T(YAFFS_TRACE_OS, ("start yaffs_write_begin index %d(%x) uptodate %d\n",(int)index,(int)index,Page_Uptodate(pg) ? 1 : 0)); + + /* Get fs space */ + space_held = yaffs_hold_space(filp); + + if (!space_held) { + ret = -ENOSPC; + goto out; + } + + /* Update page if required */ + + if (!Page_Uptodate(pg)) + ret = yaffs_readpage_nolock(filp, pg); + + if (ret) + goto out; + + /* Happy path return */ + T(YAFFS_TRACE_OS, ("end yaffs_write_begin - ok\n")); + + return 0; + +out: + T(YAFFS_TRACE_OS, ("end yaffs_write_begin fail returning %d\n", ret)); + if (space_held) + yaffs_release_space(filp); + if (pg) { + unlock_page(pg); + page_cache_release(pg); + } + return ret; +} + +#else + static int yaffs_prepare_write(struct file *f, struct page *pg, - unsigned offset, unsigned to) + unsigned offset, unsigned to) { + T(YAFFS_TRACE_OS, ("yaffs_prepair_write\n")); - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_prepair_write\n")); - if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE)) + if (!Page_Uptodate(pg)) return yaffs_readpage_nolock(f, pg); - return 0; +} +#endif + +#if (YAFFS_USE_WRITE_BEGIN_END > 0) +static int yaffs_write_end(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *pg, void *fsdadata) +{ + int ret = 0; + void *addr, *kva; + uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1); + + kva = kmap(pg); + addr = kva + offset_into_page; + + T(YAFFS_TRACE_OS, + ("yaffs_write_end addr %x pos %x nBytes %d\n", + (unsigned) addr, + (int)pos, copied)); + ret = yaffs_file_write(filp, addr, copied, &pos); + + if (ret != copied) { + T(YAFFS_TRACE_OS, + ("yaffs_write_end not same size ret %d copied %d\n", + ret, copied)); + SetPageError(pg); + } else { + /* Nothing */ + } + + kunmap(pg); + + yaffs_release_space(filp); + unlock_page(pg); + page_cache_release(pg); + return ret; } +#else static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, - unsigned to) + unsigned to) { + void *addr, *kva; - void *addr = page_address(pg) + offset; loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset; int nBytes = to - offset; int nWritten; unsigned spos = pos; - unsigned saddr = (unsigned)addr; + unsigned saddr; + + kva = kmap(pg); + addr = kva + offset; + + saddr = (unsigned) addr; T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_commit_write addr %x pos %x nBytes %d\n", saddr, - spos, nBytes)); + ("yaffs_commit_write addr %x pos %x nBytes %d\n", + saddr, spos, nBytes)); nWritten = yaffs_file_write(f, addr, nBytes, &pos); if (nWritten != nBytes) { T(YAFFS_TRACE_OS, - (KERN_DEBUG - "yaffs_commit_write not same size nWritten %d nBytes %d\n", - nWritten, nBytes)); + ("yaffs_commit_write not same size nWritten %d nBytes %d\n", + nWritten, nBytes)); SetPageError(pg); - ClearPageUptodate(pg); } else { - SetPageUptodate(pg); + /* Nothing */ } + kunmap(pg); + T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_commit_write returning %d\n", - nWritten == nBytes ? 0 : nWritten)); + ("yaffs_commit_write returning %d\n", + nWritten == nBytes ? 0 : nWritten)); return nWritten == nBytes ? 0 : nWritten; - } +#endif + -static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj) +static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object *obj) { if (inode && obj) { /* Check mode against the variant type and attempt to repair if broken. */ - __u32 mode = obj->yst_mode; - switch( obj->variantType ){ - case YAFFS_OBJECT_TYPE_FILE : - if( ! S_ISREG(mode) ){ - obj->yst_mode &= ~S_IFMT; - obj->yst_mode |= S_IFREG; - } - - break; - case YAFFS_OBJECT_TYPE_SYMLINK : - if( ! S_ISLNK(mode) ){ - obj->yst_mode &= ~S_IFMT; - obj->yst_mode |= S_IFLNK; - } - - break; - case YAFFS_OBJECT_TYPE_DIRECTORY : - if( ! S_ISDIR(mode) ){ - obj->yst_mode &= ~S_IFMT; - obj->yst_mode |= S_IFDIR; - } - - break; - case YAFFS_OBJECT_TYPE_UNKNOWN : - case YAFFS_OBJECT_TYPE_HARDLINK : - case YAFFS_OBJECT_TYPE_SPECIAL : - default: - /* TODO? */ - break; - } - - inode->i_flags |= S_NOATIME; - + __u32 mode = obj->yst_mode; + switch (obj->variantType) { + case YAFFS_OBJECT_TYPE_FILE: + if (!S_ISREG(mode)) { + obj->yst_mode &= ~S_IFMT; + obj->yst_mode |= S_IFREG; + } + + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + if (!S_ISLNK(mode)) { + obj->yst_mode &= ~S_IFMT; + obj->yst_mode |= S_IFLNK; + } + + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + if (!S_ISDIR(mode)) { + obj->yst_mode &= ~S_IFMT; + obj->yst_mode |= S_IFDIR; + } + + break; + case YAFFS_OBJECT_TYPE_UNKNOWN: + case YAFFS_OBJECT_TYPE_HARDLINK: + case YAFFS_OBJECT_TYPE_SPECIAL: + default: + /* TODO? */ + break; + } + + inode->i_flags |= S_NOATIME; + inode->i_ino = obj->objectId; inode->i_mode = obj->yst_mode; inode->i_uid = obj->yst_uid; inode->i_gid = obj->yst_gid; -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) inode->i_blksize = inode->i_sb->s_blocksize; #endif -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) inode->i_rdev = old_decode_dev(obj->yst_rdev); inode->i_atime.tv_sec = (time_t) (obj->yst_atime); @@ -814,26 +1100,25 @@ static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj) inode->i_nlink = yaffs_GetObjectLinkCount(obj); T(YAFFS_TRACE_OS, - (KERN_DEBUG - "yaffs_FillInode mode %x uid %d gid %d size %d count %d\n", - inode->i_mode, inode->i_uid, inode->i_gid, - (int)inode->i_size, atomic_read(&inode->i_count))); + ("yaffs_FillInode mode %x uid %d gid %d size %d count %d\n", + inode->i_mode, inode->i_uid, inode->i_gid, + (int)inode->i_size, atomic_read(&inode->i_count))); switch (obj->yst_mode & S_IFMT) { default: /* fifo, device or socket */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) init_special_inode(inode, obj->yst_mode, - old_decode_dev(obj->yst_rdev)); + old_decode_dev(obj->yst_rdev)); #else init_special_inode(inode, obj->yst_mode, - (dev_t) (obj->yst_rdev)); + (dev_t) (obj->yst_rdev)); #endif break; case S_IFREG: /* file */ inode->i_op = &yaffs_file_inode_operations; inode->i_fop = &yaffs_file_operations; inode->i_mapping->a_ops = - &yaffs_file_address_operations; + &yaffs_file_address_operations; break; case S_IFDIR: /* directory */ inode->i_op = &yaffs_dir_inode_operations; @@ -850,36 +1135,36 @@ static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj) } else { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_FileInode invalid parameters\n")); + ("yaffs_FileInode invalid parameters\n")); } } struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, - yaffs_Object * obj) + yaffs_Object *obj) { struct inode *inode; if (!sb) { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_get_inode for NULL super_block!!\n")); + ("yaffs_get_inode for NULL super_block!!\n")); return NULL; } if (!obj) { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_get_inode for NULL object!!\n")); + ("yaffs_get_inode for NULL object!!\n")); return NULL; } T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_get_inode for object %d\n", obj->objectId)); + ("yaffs_get_inode for object %d\n", obj->objectId)); inode = Y_IGET(sb, obj->objectId); - if(IS_ERR(inode)) - return NULL; + if (IS_ERR(inode)) + return NULL; /* NB Side effect: iget calls back to yaffs_read_inode(). */ /* iget also increments the inode's i_count */ @@ -889,7 +1174,7 @@ struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, } static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, - loff_t * pos) + loff_t *pos) { yaffs_Object *obj; int nWritten, ipos; @@ -904,28 +1189,26 @@ static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, inode = f->f_dentry->d_inode; - if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) { + if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) ipos = inode->i_size; - } else { + else ipos = *pos; - } - if (!obj) { + if (!obj) T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_file_write: hey obj is null!\n")); - } else { + ("yaffs_file_write: hey obj is null!\n")); + else T(YAFFS_TRACE_OS, - (KERN_DEBUG - "yaffs_file_write about to write writing %d bytes" - "to object %d at %d\n", - n, obj->objectId, ipos)); - } + ("yaffs_file_write about to write writing %u(%x) bytes" + "to object %d at %d(%x)\n", + (unsigned) n, (unsigned) n, obj->objectId, ipos,ipos)); nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0); T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_file_write writing %d bytes, %d written at %d\n", - n, nWritten, ipos)); + ("yaffs_file_write: %d(%x) bytes written\n", + (unsigned )n,(unsigned)n)); + if (nWritten > 0) { ipos += nWritten; *pos = ipos; @@ -934,25 +1217,66 @@ static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, inode->i_blocks = (ipos + 511) >> 9; T(YAFFS_TRACE_OS, - (KERN_DEBUG - "yaffs_file_write size updated to %d bytes, " - "%d blocks\n", - ipos, (int)(inode->i_blocks))); + ("yaffs_file_write size updated to %d bytes, " + "%d blocks\n", + ipos, (int)(inode->i_blocks))); } } yaffs_GrossUnlock(dev); - return nWritten == 0 ? -ENOSPC : nWritten; + return (nWritten == 0) && (n > 0) ? -ENOSPC : nWritten; +} + +/* Space holding and freeing is done to ensure we have space available for write_begin/end */ +/* For now we just assume few parallel writes and check against a small number. */ +/* Todo: need to do this with a counter to handle parallel reads better */ + +static ssize_t yaffs_hold_space(struct file *f) +{ + yaffs_Object *obj; + yaffs_Device *dev; + + int nFreeChunks; + + + obj = yaffs_DentryToObject(f->f_dentry); + + dev = obj->myDev; + + yaffs_GrossLock(dev); + + nFreeChunks = yaffs_GetNumberOfFreeChunks(dev); + + yaffs_GrossUnlock(dev); + + return (nFreeChunks > 20) ? 1 : 0; +} + +static void yaffs_release_space(struct file *f) +{ + yaffs_Object *obj; + yaffs_Device *dev; + + + obj = yaffs_DentryToObject(f->f_dentry); + + dev = obj->myDev; + + yaffs_GrossLock(dev); + + + yaffs_GrossUnlock(dev); } static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) { yaffs_Object *obj; yaffs_Device *dev; + struct yaffs_SearchContext *sc; struct inode *inode = f->f_dentry->d_inode; unsigned long offset, curoffs; - struct ylist_head *i; yaffs_Object *l; + int retVal = 0; char name[YAFFS_MAX_NAME_LENGTH + 1]; @@ -963,28 +1287,34 @@ static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) offset = f->f_pos; + sc = yaffs_NewSearch(obj); + if(!sc){ + retVal = -ENOMEM; + goto unlock_out; + } + T(YAFFS_TRACE_OS, ("yaffs_readdir: starting at %d\n", (int)offset)); if (offset == 0) { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_readdir: entry . ino %d \n", - (int)inode->i_ino)); - if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) - < 0) { + ("yaffs_readdir: entry . ino %d \n", + (int)inode->i_ino)); + yaffs_GrossUnlock(dev); + if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0) goto out; - } + yaffs_GrossLock(dev); offset++; f->f_pos++; } if (offset == 1) { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_readdir: entry .. ino %d \n", - (int)f->f_dentry->d_parent->d_inode->i_ino)); - if (filldir - (dirent, "..", 2, offset, - f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) { + ("yaffs_readdir: entry .. ino %d \n", + (int)f->f_dentry->d_parent->d_inode->i_ino)); + yaffs_GrossUnlock(dev); + if (filldir(dirent, "..", 2, offset, + f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) goto out; - } + yaffs_GrossLock(dev); offset++; f->f_pos++; } @@ -1000,49 +1330,61 @@ static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) f->f_version = inode->i_version; } - ylist_for_each(i, &obj->variant.directoryVariant.children) { + while(sc->nextReturn){ curoffs++; + l = sc->nextReturn; if (curoffs >= offset) { - l = ylist_entry(i, yaffs_Object, siblings); + int this_inode = yaffs_GetObjectInode(l); + int this_type = yaffs_GetObjectType(l); yaffs_GetObjectName(l, name, YAFFS_MAX_NAME_LENGTH + 1); T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_readdir: %s inode %d\n", name, + ("yaffs_readdir: %s inode %d\n", name, yaffs_GetObjectInode(l))); + yaffs_GrossUnlock(dev); + if (filldir(dirent, - name, - strlen(name), - offset, - yaffs_GetObjectInode(l), - yaffs_GetObjectType(l)) - < 0) { - goto up_and_out; - } + name, + strlen(name), + offset, + this_inode, + this_type) < 0) + goto out; + + yaffs_GrossLock(dev); offset++; f->f_pos++; } + yaffs_SearchAdvance(sc); } - up_and_out: - out: - +unlock_out: yaffs_GrossUnlock(dev); +out: + yaffs_EndSearch(sc); - return 0; + return retVal; } /* * File creation. Allocate an inode, and we're done.. */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) +#define YCRED(x) x +#else +#define YCRED(x) (x->cred) +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - dev_t rdev) + dev_t rdev) #else static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, - int rdev) + int rdev) #endif { struct inode *inode; @@ -1053,25 +1395,25 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, yaffs_Object *parent = yaffs_InodeToObject(dir); int error = -ENOSPC; - uid_t uid = current->fsuid; - gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid; + uid_t uid = YCRED(current)->fsuid; + gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; - if((dir->i_mode & S_ISGID) && S_ISDIR(mode)) + if ((dir->i_mode & S_ISGID) && S_ISDIR(mode)) mode |= S_ISGID; if (parent) { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_mknod: parent object %d type %d\n", - parent->objectId, parent->variantType)); + ("yaffs_mknod: parent object %d type %d\n", + parent->objectId, parent->variantType)); } else { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_mknod: could not get parent object\n")); + ("yaffs_mknod: could not get parent object\n")); return -EPERM; } T(YAFFS_TRACE_OS, ("yaffs_mknod: making oject for %s, " - "mode %x dev %x\n", - dentry->d_name.name, mode, rdev)); + "mode %x dev %x\n", + dentry->d_name.name, mode, rdev)); dev = parent->myDev; @@ -1080,33 +1422,28 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, switch (mode & S_IFMT) { default: /* Special (socket, fifo, device...) */ - T(YAFFS_TRACE_OS, (KERN_DEBUG - "yaffs_mknod: making special\n")); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) - obj = - yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, - gid, old_encode_dev(rdev)); + T(YAFFS_TRACE_OS, ("yaffs_mknod: making special\n")); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, + gid, old_encode_dev(rdev)); #else - obj = - yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, - gid, rdev); + obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, + gid, rdev); #endif break; case S_IFREG: /* file */ - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n")); - obj = - yaffs_MknodFile(parent, dentry->d_name.name, mode, uid, - gid); + T(YAFFS_TRACE_OS, ("yaffs_mknod: making file\n")); + obj = yaffs_MknodFile(parent, dentry->d_name.name, mode, uid, + gid); break; case S_IFDIR: /* directory */ T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_mknod: making directory\n")); - obj = - yaffs_MknodDirectory(parent, dentry->d_name.name, mode, - uid, gid); + ("yaffs_mknod: making directory\n")); + obj = yaffs_MknodDirectory(parent, dentry->d_name.name, mode, + uid, gid); break; case S_IFLNK: /* symlink */ - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n")); + T(YAFFS_TRACE_OS, ("yaffs_mknod: making symlink\n")); obj = NULL; /* Do we ever get here? */ break; } @@ -1117,13 +1454,14 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, if (obj) { inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj); d_instantiate(dentry, inode); + update_dir_time(dir); T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_mknod created object %d count = %d\n", - obj->objectId, atomic_read(&inode->i_count))); + ("yaffs_mknod created object %d count = %d\n", + obj->objectId, atomic_read(&inode->i_count))); error = 0; } else { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_mknod failed making object\n")); + ("yaffs_mknod failed making object\n")); error = -ENOMEM; } @@ -1133,25 +1471,19 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) { int retVal; - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mkdir\n")); + T(YAFFS_TRACE_OS, ("yaffs_mkdir\n")); retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); -#if 0 - /* attempt to fix dir bug - didn't work */ - if (!retVal) { - dget(dentry); - } -#endif return retVal; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *n) #else static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode) #endif { - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_create\n")); + T(YAFFS_TRACE_OS, ("yaffs_create\n")); return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); } @@ -1162,8 +1494,8 @@ static int yaffs_unlink(struct inode *dir, struct dentry *dentry) yaffs_Device *dev; T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_unlink %d:%s\n", (int)(dir->i_ino), - dentry->d_name.name)); + ("yaffs_unlink %d:%s\n", (int)(dir->i_ino), + dentry->d_name.name)); dev = yaffs_InodeToObject(dir)->myDev; @@ -1176,6 +1508,7 @@ static int yaffs_unlink(struct inode *dir, struct dentry *dentry) dir->i_version++; yaffs_GrossUnlock(dev); mark_inode_dirty(dentry->d_inode); + update_dir_time(dir); return 0; } yaffs_GrossUnlock(dev); @@ -1186,42 +1519,38 @@ static int yaffs_unlink(struct inode *dir, struct dentry *dentry) * Create a link... */ static int yaffs_link(struct dentry *old_dentry, struct inode *dir, - struct dentry *dentry) + struct dentry *dentry) { struct inode *inode = old_dentry->d_inode; yaffs_Object *obj = NULL; yaffs_Object *link = NULL; yaffs_Device *dev; - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_link\n")); + T(YAFFS_TRACE_OS, ("yaffs_link\n")); obj = yaffs_InodeToObject(inode); dev = obj->myDev; yaffs_GrossLock(dev); - if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ - { - link = - yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name, - obj); - } + if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ + link = yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name, + obj); if (link) { old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj); d_instantiate(dentry, old_dentry->d_inode); atomic_inc(&old_dentry->d_inode->i_count); T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_link link count %d i_count %d\n", - old_dentry->d_inode->i_nlink, - atomic_read(&old_dentry->d_inode->i_count))); - + ("yaffs_link link count %d i_count %d\n", + old_dentry->d_inode->i_nlink, + atomic_read(&old_dentry->d_inode->i_count))); } yaffs_GrossUnlock(dev); - if (link) { - + if (link){ + update_dir_time(dir); return 0; } @@ -1229,39 +1558,38 @@ static int yaffs_link(struct dentry *old_dentry, struct inode *dir, } static int yaffs_symlink(struct inode *dir, struct dentry *dentry, - const char *symname) + const char *symname) { yaffs_Object *obj; yaffs_Device *dev; - uid_t uid = current->fsuid; - gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid; + uid_t uid = YCRED(current)->fsuid; + gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_symlink\n")); + T(YAFFS_TRACE_OS, ("yaffs_symlink\n")); dev = yaffs_InodeToObject(dir)->myDev; yaffs_GrossLock(dev); obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name, - S_IFLNK | S_IRWXUGO, uid, gid, symname); + S_IFLNK | S_IRWXUGO, uid, gid, symname); yaffs_GrossUnlock(dev); if (obj) { - struct inode *inode; inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); d_instantiate(dentry, inode); - T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink created OK\n")); + update_dir_time(dir); + T(YAFFS_TRACE_OS, ("symlink created OK\n")); return 0; } else { - T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink not created\n")); - + T(YAFFS_TRACE_OS, ("symlink not created\n")); } return -ENOMEM; } static int yaffs_sync_object(struct file *file, struct dentry *dentry, - int datasync) + int datasync) { yaffs_Object *obj; @@ -1271,9 +1599,9 @@ static int yaffs_sync_object(struct file *file, struct dentry *dentry, dev = obj->myDev; - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_object\n")); + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, ("yaffs_sync_object\n")); yaffs_GrossLock(dev); - yaffs_FlushFile(obj, 1); + yaffs_FlushFile(obj, 1, datasync); yaffs_GrossUnlock(dev); return 0; } @@ -1290,85 +1618,101 @@ static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, int retVal = YAFFS_FAIL; yaffs_Object *target; - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_rename\n")); + T(YAFFS_TRACE_OS, ("yaffs_rename\n")); dev = yaffs_InodeToObject(old_dir)->myDev; yaffs_GrossLock(dev); /* Check if the target is an existing directory that is not empty. */ - target = - yaffs_FindObjectByName(yaffs_InodeToObject(new_dir), - new_dentry->d_name.name); + target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir), + new_dentry->d_name.name); - if (target && - target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && - !ylist_empty(&target->variant.directoryVariant.children)) { + if (target && target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && + !ylist_empty(&target->variant.directoryVariant.children)) { - T(YAFFS_TRACE_OS, (KERN_DEBUG "target is non-empty dir\n")); + T(YAFFS_TRACE_OS, ("target is non-empty dir\n")); retVal = YAFFS_FAIL; } else { - /* Now does unlinking internally using shadowing mechanism */ - T(YAFFS_TRACE_OS, (KERN_DEBUG "calling yaffs_RenameObject\n")); - - retVal = - yaffs_RenameObject(yaffs_InodeToObject(old_dir), - old_dentry->d_name.name, - yaffs_InodeToObject(new_dir), - new_dentry->d_name.name); + T(YAFFS_TRACE_OS, ("calling yaffs_RenameObject\n")); + retVal = yaffs_RenameObject(yaffs_InodeToObject(old_dir), + old_dentry->d_name.name, + yaffs_InodeToObject(new_dir), + new_dentry->d_name.name); } yaffs_GrossUnlock(dev); if (retVal == YAFFS_OK) { - if(target) { + if (target) { new_dentry->d_inode->i_nlink--; mark_inode_dirty(new_dentry->d_inode); } - + + update_dir_time(old_dir); + if(old_dir != new_dir) + update_dir_time(new_dir); return 0; } else { return -ENOTEMPTY; } - } static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) { struct inode *inode = dentry->d_inode; - int error; + int error = 0; yaffs_Device *dev; T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_setattr of object %d\n", - yaffs_InodeToObject(inode)->objectId)); - - if ((error = inode_change_ok(inode, attr)) == 0) { - + ("yaffs_setattr of object %d\n", + yaffs_InodeToObject(inode)->objectId)); + + /* Fail if a requested resize >= 2GB */ + if (attr->ia_valid & ATTR_SIZE && + (attr->ia_size >> 31)) + error = -EINVAL; + + if (error == 0) + error = inode_change_ok(inode, attr); + if (error == 0) { + int result; + if (!error){ + error = inode_setattr(inode, attr); + T(YAFFS_TRACE_OS,("inode_setattr called\n")); + if (attr->ia_valid & ATTR_SIZE) + truncate_inode_pages(&inode->i_data,attr->ia_size); + } dev = yaffs_InodeToObject(inode)->myDev; + if (attr->ia_valid & ATTR_SIZE){ + T(YAFFS_TRACE_OS,("resize to %d(%x)\n",(int)(attr->ia_size),(int)(attr->ia_size))); + } yaffs_GrossLock(dev); - if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) == - YAFFS_OK) { + result = yaffs_SetAttributes(yaffs_InodeToObject(inode), attr); + if(result == YAFFS_OK) { error = 0; } else { error = -EPERM; } yaffs_GrossUnlock(dev); - if (!error) - error = inode_setattr(inode, attr); + } + + T(YAFFS_TRACE_OS, + ("yaffs_setattr done returning %d\n",error)); + return error; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) { yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; struct super_block *sb = dentry->d_sb; -#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf) { yaffs_Device *dev = yaffs_SuperToDevice(sb); @@ -1378,54 +1722,53 @@ static int yaffs_statfs(struct super_block *sb, struct statfs *buf) yaffs_Device *dev = yaffs_SuperToDevice(sb); #endif - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_statfs\n")); + T(YAFFS_TRACE_OS, ("yaffs_statfs\n")); yaffs_GrossLock(dev); buf->f_type = YAFFS_MAGIC; buf->f_bsize = sb->s_blocksize; buf->f_namelen = 255; - - if(dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)){ + + if (dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)) { /* Do this if chunk size is not a power of 2 */ - + uint64_t bytesInDev; uint64_t bytesFree; - bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock +1))) * - ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk)); - - do_div(bytesInDev,sb->s_blocksize); /* bytesInDev becomes the number of blocks */ + bytesInDev = ((uint64_t)((dev->param.endBlock - dev->param.startBlock + 1))) * + ((uint64_t)(dev->param.nChunksPerBlock * dev->nDataBytesPerChunk)); + + do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */ buf->f_blocks = bytesInDev; bytesFree = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) * - ((uint64_t)(dev->nDataBytesPerChunk)); - - do_div(bytesFree,sb->s_blocksize); - + ((uint64_t)(dev->nDataBytesPerChunk)); + + do_div(bytesFree, sb->s_blocksize); + buf->f_bfree = bytesFree; - + } else if (sb->s_blocksize > dev->nDataBytesPerChunk) { - + buf->f_blocks = - (dev->endBlock - dev->startBlock + 1) * - dev->nChunksPerBlock / - (sb->s_blocksize / dev->nDataBytesPerChunk); - buf->f_bfree = - yaffs_GetNumberOfFreeChunks(dev) / - (sb->s_blocksize / dev->nDataBytesPerChunk); + (dev->param.endBlock - dev->param.startBlock + 1) * + dev->param.nChunksPerBlock / + (sb->s_blocksize / dev->nDataBytesPerChunk); + buf->f_bfree = + yaffs_GetNumberOfFreeChunks(dev) / + (sb->s_blocksize / dev->nDataBytesPerChunk); } else { - buf->f_blocks = - (dev->endBlock - dev->startBlock + 1) * - dev->nChunksPerBlock * - (dev->nDataBytesPerChunk / sb->s_blocksize); - - buf->f_bfree = - yaffs_GetNumberOfFreeChunks(dev) * - (dev->nDataBytesPerChunk / sb->s_blocksize); + buf->f_blocks = + (dev->param.endBlock - dev->param.startBlock + 1) * + dev->param.nChunksPerBlock * + (dev->nDataBytesPerChunk / sb->s_blocksize); + + buf->f_bfree = + yaffs_GetNumberOfFreeChunks(dev) * + (dev->nDataBytesPerChunk / sb->s_blocksize); } - - + buf->f_files = 0; buf->f_ffree = 0; buf->f_bavail = buf->f_bfree; @@ -1435,17 +1778,33 @@ static int yaffs_statfs(struct super_block *sb, struct statfs *buf) } + +static void yaffs_flush_sb_inodes(struct super_block *sb) +{ + struct inode *iptr; + yaffs_Object *obj; + + list_for_each_entry(iptr,&sb->s_inodes, i_sb_list){ + obj = yaffs_InodeToObject(iptr); + if(obj){ + T(YAFFS_TRACE_OS, ("flushing obj %d\n",obj->objectId)); + yaffs_FlushFile(obj,1,0); + } + } +} + static int yaffs_do_sync_fs(struct super_block *sb) { yaffs_Device *dev = yaffs_SuperToDevice(sb); - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_do_sync_fs\n")); + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, ("yaffs_do_sync_fs\n")); - if(sb->s_dirt) { + if (sb->s_dirt) { yaffs_GrossLock(dev); - if(dev){ + if (dev) { yaffs_FlushEntireDeviceCache(dev); + yaffs_flush_sb_inodes(sb); yaffs_CheckpointSave(dev); } @@ -1457,46 +1816,46 @@ static int yaffs_do_sync_fs(struct super_block *sb) } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) static void yaffs_write_super(struct super_block *sb) #else static int yaffs_write_super(struct super_block *sb) #endif { - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_super\n")); - yaffs_do_sync_fs(sb); -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)) - return 0; + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, ("yaffs_write_super\n")); + if (yaffs_auto_checkpoint >= 2) + yaffs_do_sync_fs(sb); +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) + return 0; #endif } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) static int yaffs_sync_fs(struct super_block *sb, int wait) #else static int yaffs_sync_fs(struct super_block *sb) #endif { + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, ("yaffs_sync_fs\n")); - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_fs\n")); - - yaffs_do_sync_fs(sb); - - return 0; + if (yaffs_auto_checkpoint >= 1) + yaffs_do_sync_fs(sb); + return 0; } #ifdef YAFFS_USE_OWN_IGET -static struct inode * yaffs_iget(struct super_block *sb, unsigned long ino) +static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino) { struct inode *inode; yaffs_Object *obj; yaffs_Device *dev = yaffs_SuperToDevice(sb); T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_iget for %lu\n", ino)); + ("yaffs_iget for %lu\n", ino)); inode = iget_locked(sb, ino); if (!inode) @@ -1504,11 +1863,11 @@ static struct inode * yaffs_iget(struct super_block *sb, unsigned long ino) if (!(inode->i_state & I_NEW)) return inode; - /* NB This is called as a side effect of other functions, but - * we had to release the lock to prevent deadlocks, so - * need to lock again. - */ - + /* NB This is called as a side effect of other functions, but + * we had to release the lock to prevent deadlocks, so + * need to lock again. + */ + yaffs_GrossLock(dev); obj = yaffs_FindObjectByNumber(dev, inode->i_ino); @@ -1516,7 +1875,7 @@ static struct inode * yaffs_iget(struct super_block *sb, unsigned long ino) yaffs_FillInodeFromObject(inode, obj); yaffs_GrossUnlock(dev); - + unlock_new_inode(inode); return inode; } @@ -1534,7 +1893,7 @@ static void yaffs_read_inode(struct inode *inode) yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb); T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_read_inode for %d\n", (int)inode->i_ino)); + ("yaffs_read_inode for %d\n", (int)inode->i_ino)); yaffs_GrossLock(dev); @@ -1547,18 +1906,18 @@ static void yaffs_read_inode(struct inode *inode) #endif -static YLIST_HEAD(yaffs_dev_list); +static YLIST_HEAD(yaffs_context_list); -#if 0 // not used +#if 0 /* not used */ static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data) { yaffs_Device *dev = yaffs_SuperToDevice(sb); - if( *flags & MS_RDONLY ) { + if (*flags & MS_RDONLY) { struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_remount_fs: %s: RO\n", dev->name )); + ("yaffs_remount_fs: %s: RO\n", dev->name)); yaffs_GrossLock(dev); @@ -1570,10 +1929,9 @@ static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data) mtd->sync(mtd); yaffs_GrossUnlock(dev); - } - else { + } else { T(YAFFS_TRACE_OS, - (KERN_DEBUG "yaffs_remount_fs: %s: RW\n", dev->name )); + ("yaffs_remount_fs: %s: RW\n", dev->name)); } return 0; @@ -1584,7 +1942,7 @@ static void yaffs_put_super(struct super_block *sb) { yaffs_Device *dev = yaffs_SuperToDevice(sb); - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_put_super\n")); + T(YAFFS_TRACE_OS, ("yaffs_put_super\n")); yaffs_GrossLock(dev); @@ -1592,20 +1950,19 @@ static void yaffs_put_super(struct super_block *sb) yaffs_CheckpointSave(dev); - if (dev->putSuperFunc) { - dev->putSuperFunc(sb); - } + if (yaffs_DeviceToContext(dev)->putSuperFunc) + yaffs_DeviceToContext(dev)->putSuperFunc(sb); yaffs_Deinitialise(dev); yaffs_GrossUnlock(dev); /* we assume this is protected by lock_kernel() in mount/umount */ - ylist_del(&dev->devList); + ylist_del_init(&(yaffs_DeviceToContext(dev)->contextList)); - if(dev->spareBuffer){ - YFREE(dev->spareBuffer); - dev->spareBuffer = NULL; + if (yaffs_DeviceToContext(dev)->spareBuffer) { + YFREE(yaffs_DeviceToContext(dev)->spareBuffer); + yaffs_DeviceToContext(dev)->spareBuffer = NULL; } kfree(dev); @@ -1614,24 +1971,22 @@ static void yaffs_put_super(struct super_block *sb) static void yaffs_MTDPutSuper(struct super_block *sb) { + struct mtd_info *mtd = yaffs_DeviceToContext(yaffs_SuperToDevice(sb))->mtd; - struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; - - if (mtd->sync) { + if (mtd->sync) mtd->sync(mtd); - } put_mtd_device(mtd); } -static void yaffs_MarkSuperBlockDirty(void *vsb) +static void yaffs_MarkSuperBlockDirty(yaffs_Device *dev) { - struct super_block *sb = (struct super_block *)vsb; + struct super_block *sb = yaffs_DeviceToContext(dev)->superBlock; - T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_MarkSuperBlockDirty() sb = %p\n",sb)); -// if(sb) -// sb->s_dirt = 1; + T(YAFFS_TRACE_OS, ("yaffs_MarkSuperBlockDirty() sb = %p\n", sb)); + if (sb) + sb->s_dirt = 1; } typedef struct { @@ -1639,53 +1994,80 @@ typedef struct { int skip_checkpoint_read; int skip_checkpoint_write; int no_cache; + int tags_ecc_on; + int tags_ecc_overridden; + int lazy_loading_enabled; + int lazy_loading_overridden; + int empty_lost_and_found; + int empty_lost_and_found_overridden; } yaffs_options; -#define MAX_OPT_LEN 20 +#define MAX_OPT_LEN 30 static int yaffs_parse_options(yaffs_options *options, const char *options_str) { - char cur_opt[MAX_OPT_LEN+1]; + char cur_opt[MAX_OPT_LEN + 1]; int p; int error = 0; /* Parse through the options which is a comma seperated list */ - while(options_str && *options_str && !error){ - memset(cur_opt,0,MAX_OPT_LEN+1); + while (options_str && *options_str && !error) { + memset(cur_opt, 0, MAX_OPT_LEN + 1); p = 0; - while(*options_str && *options_str != ','){ - if(p < MAX_OPT_LEN){ + while(*options_str == ',') + options_str++; + + while (*options_str && *options_str != ',') { + if (p < MAX_OPT_LEN) { cur_opt[p] = *options_str; p++; } options_str++; } - if(!strcmp(cur_opt,"inband-tags")) + if (!strcmp(cur_opt, "inband-tags")) options->inband_tags = 1; - else if(!strcmp(cur_opt,"no-cache")) + else if (!strcmp(cur_opt, "tags-ecc-off")){ + options->tags_ecc_on = 0; + options->tags_ecc_overridden=1; + } else if (!strcmp(cur_opt, "tags-ecc-on")){ + options->tags_ecc_on = 1; + options->tags_ecc_overridden = 1; + } else if (!strcmp(cur_opt, "lazy-loading-off")){ + options->lazy_loading_enabled = 0; + options->lazy_loading_overridden=1; + } else if (!strcmp(cur_opt, "lazy-loading-on")){ + options->lazy_loading_enabled = 1; + options->lazy_loading_overridden = 1; + } else if (!strcmp(cur_opt, "empty-lost-and-found-off")){ + options->empty_lost_and_found = 0; + options->empty_lost_and_found_overridden=1; + } else if (!strcmp(cur_opt, "empty-lost-and-found-on")){ + options->empty_lost_and_found = 1; + options->empty_lost_and_found_overridden=1; + } else if (!strcmp(cur_opt, "no-cache")) options->no_cache = 1; - else if(!strcmp(cur_opt,"no-checkpoint-read")) + else if (!strcmp(cur_opt, "no-checkpoint-read")) options->skip_checkpoint_read = 1; - else if(!strcmp(cur_opt,"no-checkpoint-write")) + else if (!strcmp(cur_opt, "no-checkpoint-write")) options->skip_checkpoint_write = 1; - else if(!strcmp(cur_opt,"no-checkpoint")){ + else if (!strcmp(cur_opt, "no-checkpoint")) { options->skip_checkpoint_read = 1; options->skip_checkpoint_write = 1; } else { - printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt); + printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n", + cur_opt); error = 1; } - } return error; } static struct super_block *yaffs_internal_read_super(int yaffsVersion, - struct super_block *sb, - void *data, int silent) + struct super_block *sb, + void *data, int silent) { int nBlocks; struct inode *inode = NULL; @@ -1695,6 +2077,8 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, struct mtd_info *mtd; int err; char *data_str = (char *)data; + struct yaffs_LinuxContext *context = NULL; + yaffs_DeviceParam *param; yaffs_options options; @@ -1713,14 +2097,14 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, sb->s_dev, yaffs_devname(sb, devname_buf)); - if(!data_str) + if (!data_str) data_str = ""; - printk(KERN_INFO "yaffs: passed flags \"%s\"\n",data_str); + printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str); - memset(&options,0,sizeof(options)); + memset(&options, 0, sizeof(options)); - if(yaffs_parse_options(&options,data_str)){ + if (yaffs_parse_options(&options, data_str)) { /* Option parsing failed */ return NULL; } @@ -1744,9 +2128,9 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, yaffs_devname(sb, devname_buf))); /* Check it's an mtd device..... */ - if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) { + if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) return NULL; /* This isn't an mtd device */ - } + /* Get the device */ mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); if (!mtd) { @@ -1772,22 +2156,23 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd))); T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize)); T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize)); - T(YAFFS_TRACE_OS, (" size %d\n", mtd->size)); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) + T(YAFFS_TRACE_OS, (" size %u\n", mtd->size)); +#else + T(YAFFS_TRACE_OS, (" size %lld\n", mtd->size)); +#endif #ifdef CONFIG_YAFFS_AUTO_YAFFS2 - if (yaffsVersion == 1 && - WRITE_SIZE(mtd) >= 2048) { - T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n")); - yaffsVersion = 2; + if (yaffsVersion == 1 && WRITE_SIZE(mtd) >= 2048) { + T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs2\n")); + yaffsVersion = 2; } /* Added NCB 26/5/2006 for completeness */ - if (yaffsVersion == 2 && - !options.inband_tags && - WRITE_SIZE(mtd) == 512){ - T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n")); - yaffsVersion = 1; + if (yaffsVersion == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) { + T(YAFFS_TRACE_ALWAYS, ("yaffs: auto selecting yaffs1\n")); + yaffsVersion = 1; } #endif @@ -1799,7 +2184,7 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, !mtd->block_markbad || !mtd->read || !mtd->write || -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) !mtd->read_oob || !mtd->write_oob) { #else !mtd->write_ecc || @@ -1824,7 +2209,7 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, if (!mtd->erase || !mtd->read || !mtd->write || -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) !mtd->read_oob || !mtd->write_oob) { #else !mtd->write_ecc || @@ -1850,11 +2235,18 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, * Set the yaffs_Device up for mtd */ -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) - sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); -#else - sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); -#endif + dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); + context = kmalloc(sizeof(struct yaffs_LinuxContext),GFP_KERNEL); + + if(!dev || !context ){ + if(dev) + kfree(dev); + if(context) + kfree(context); + dev = NULL; + context = NULL; + } + if (!dev) { /* Deep shit could not allocate device structure */ T(YAFFS_TRACE_ALWAYS, @@ -1862,83 +2254,129 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, "yaffs_Device. \n")); return NULL; } - memset(dev, 0, sizeof(yaffs_Device)); - dev->genericDevice = mtd; - dev->name = mtd->name; + param = &(dev->param); + + memset(context,0,sizeof(struct yaffs_LinuxContext)); + dev->context = context; + YINIT_LIST_HEAD(&(context->contextList)); + context->dev = dev; + context->superBlock = sb; + + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + sb->s_fs_info = dev; +#else + sb->u.generic_sbp = dev; +#endif + + yaffs_DeviceToContext(dev)->mtd = mtd; + param->name = mtd->name; /* Set up the memory size parameters.... */ - nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK); - dev->startBlock = 0; - dev->endBlock = nBlocks - 1; - dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK; - dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK; - dev->nReservedBlocks = 5; - dev->nShortOpCaches = (options.no_cache) ? 0 : 10; - dev->inbandTags = options.inband_tags; + nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK)); + + param->startBlock = 0; + param->endBlock = nBlocks - 1; + param->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK; + param->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK; + param->nReservedBlocks = 5; + param->nShortOpCaches = (options.no_cache) ? 0 : 10; + param->inbandTags = options.inband_tags; + +#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD + param->disableLazyLoad = 1; +#endif + if(options.lazy_loading_overridden) + param->disableLazyLoad = !options.lazy_loading_enabled; + +#ifdef CONFIG_YAFFS_DISABLE_TAGS_ECC + param->noTagsECC = 1; +#endif + if(options.tags_ecc_overridden) + param->noTagsECC = !options.tags_ecc_on; + +#ifdef CONFIG_YAFFS_EMPTY_LOST_AND_FOUND + param->emptyLostAndFound = 1; +#endif + +#ifdef CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING + param->refreshPeriod = 0; +#else + param->refreshPeriod = 10000; +#endif + + if(options.empty_lost_and_found_overridden) + param->emptyLostAndFound = options.empty_lost_and_found; /* ... and the functions. */ if (yaffsVersion == 2) { - dev->writeChunkWithTagsToNAND = + param->writeChunkWithTagsToNAND = nandmtd2_WriteChunkWithTagsToNAND; - dev->readChunkWithTagsFromNAND = + param->readChunkWithTagsFromNAND = nandmtd2_ReadChunkWithTagsFromNAND; - dev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad; - dev->queryNANDBlock = nandmtd2_QueryNANDBlock; - dev->spareBuffer = YMALLOC(mtd->oobsize); - dev->isYaffs2 = 1; -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) - dev->totalBytesPerChunk = mtd->writesize; - dev->nChunksPerBlock = mtd->erasesize / mtd->writesize; + param->markNANDBlockBad = nandmtd2_MarkNANDBlockBad; + param->queryNANDBlock = nandmtd2_QueryNANDBlock; + yaffs_DeviceToContext(dev)->spareBuffer = YMALLOC(mtd->oobsize); + param->isYaffs2 = 1; +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + param->totalBytesPerChunk = mtd->writesize; + param->nChunksPerBlock = mtd->erasesize / mtd->writesize; #else - dev->totalBytesPerChunk = mtd->oobblock; - dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock; + param->totalBytesPerChunk = mtd->oobblock; + param->nChunksPerBlock = mtd->erasesize / mtd->oobblock; #endif - nBlocks = mtd->size / mtd->erasesize; + nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize); - dev->startBlock = 0; - dev->endBlock = nBlocks - 1; + param->startBlock = 0; + param->endBlock = nBlocks - 1; } else { -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) /* use the MTD interface in yaffs_mtdif1.c */ - dev->writeChunkWithTagsToNAND = + param->writeChunkWithTagsToNAND = nandmtd1_WriteChunkWithTagsToNAND; - dev->readChunkWithTagsFromNAND = + param->readChunkWithTagsFromNAND = nandmtd1_ReadChunkWithTagsFromNAND; - dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad; - dev->queryNANDBlock = nandmtd1_QueryNANDBlock; + param->markNANDBlockBad = nandmtd1_MarkNANDBlockBad; + param->queryNANDBlock = nandmtd1_QueryNANDBlock; #else - dev->writeChunkToNAND = nandmtd_WriteChunkToNAND; - dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND; + param->writeChunkToNAND = nandmtd_WriteChunkToNAND; + param->readChunkFromNAND = nandmtd_ReadChunkFromNAND; #endif - dev->isYaffs2 = 0; + param->isYaffs2 = 0; } /* ... and common functions */ - dev->eraseBlockInNAND = nandmtd_EraseBlockInNAND; - dev->initialiseNAND = nandmtd_InitialiseNAND; + param->eraseBlockInNAND = nandmtd_EraseBlockInNAND; + param->initialiseNAND = nandmtd_InitialiseNAND; - dev->putSuperFunc = yaffs_MTDPutSuper; + yaffs_DeviceToContext(dev)->putSuperFunc = yaffs_MTDPutSuper; - dev->superBlock = (void *)sb; - dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty; + param->markSuperBlockDirty = yaffs_MarkSuperBlockDirty; + yaffs_DeviceToContext(dev)->superBlock= sb; + #ifndef CONFIG_YAFFS_DOES_ECC - dev->useNANDECC = 1; + param->useNANDECC = 1; #endif #ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES - dev->wideTnodesDisabled = 1; + param->wideTnodesDisabled = 1; #endif - dev->skipCheckpointRead = options.skip_checkpoint_read; - dev->skipCheckpointWrite = options.skip_checkpoint_write; + param->skipCheckpointRead = options.skip_checkpoint_read; + param->skipCheckpointWrite = options.skip_checkpoint_write; /* we assume this is protected by lock_kernel() in mount/umount */ - ylist_add_tail(&dev->devList, &yaffs_dev_list); + ylist_add_tail(&(yaffs_DeviceToContext(dev)->contextList), &yaffs_context_list); - init_MUTEX(&dev->grossLock); + /* Directory search handling...*/ + YINIT_LIST_HEAD(&(yaffs_DeviceToContext(dev)->searchContexts)); + param->removeObjectCallback = yaffs_RemoveObjectCallback; + + init_MUTEX(&(yaffs_DeviceToContext(dev)->grossLock)); yaffs_GrossLock(dev); @@ -1973,20 +2411,23 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, return NULL; } sb->s_root = root; + sb->s_dirt = !dev->isCheckpointed; + T(YAFFS_TRACE_ALWAYS, + ("yaffs_read_super: isCheckpointed %d\n", dev->isCheckpointed)); T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n")); return sb; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, int silent) { return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) static int yaffs_read_super(struct file_system_type *fs, int flags, const char *dev_name, void *data, struct vfsmount *mnt) @@ -2027,14 +2468,14 @@ static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, #ifdef CONFIG_YAFFS_YAFFS2 -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) 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; } -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) static int yaffs2_read_super(struct file_system_type *fs, int flags, const char *dev_name, void *data, struct vfsmount *mnt) @@ -2075,16 +2516,32 @@ static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, static struct proc_dir_entry *my_proc_entry; -static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) +static char *yaffs_dump_dev_part0(char *buf, yaffs_Device * dev) +{ + buf += sprintf(buf, "startBlock......... %d\n", dev->param.startBlock); + buf += sprintf(buf, "endBlock........... %d\n", dev->param.endBlock); + buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->param.totalBytesPerChunk); + buf += sprintf(buf, "useNANDECC......... %d\n", dev->param.useNANDECC); + buf += sprintf(buf, "noTagsECC.......... %d\n", dev->param.noTagsECC); + buf += sprintf(buf, "isYaffs2........... %d\n", dev->param.isYaffs2); + buf += sprintf(buf, "inbandTags......... %d\n", dev->param.inbandTags); + buf += sprintf(buf, "emptyLostAndFound.. %d\n", dev->param.emptyLostAndFound); + buf += sprintf(buf, "disableLazyLoad.... %d\n", dev->param.disableLazyLoad); + buf += sprintf(buf, "refreshPeriod...... %d\n", dev->param.refreshPeriod); + + buf += sprintf(buf, "\n"); + + return buf; +} + + +static char *yaffs_dump_dev_part1(char *buf, yaffs_Device * dev) { - buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock); - buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock); - buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk); buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk); buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits); buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); - buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks); + buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->param.nReservedBlocks); buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint); buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated); buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes); @@ -2096,10 +2553,9 @@ static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures); buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies); buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections); - buf += sprintf(buf, "passiveGCs......... %d\n", - dev->passiveGarbageCollections); + buf += sprintf(buf, "passiveGCs......... %d\n", dev->passiveGarbageCollections); buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites); - buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches); + buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->param.nShortOpCaches); buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks); buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed); buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed); @@ -2108,11 +2564,9 @@ static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) buf += sprintf(buf, "cacheHits.......... %d\n", dev->cacheHits); buf += sprintf(buf, "nDeletedFiles...... %d\n", dev->nDeletedFiles); buf += sprintf(buf, "nUnlinkedFiles..... %d\n", dev->nUnlinkedFiles); + buf += sprintf(buf, "refreshCount....... %d\n", dev->refreshCount); buf += sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions); - buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC); - buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2); - buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags); return buf; } @@ -2135,27 +2589,37 @@ static int yaffs_proc_read(char *page, *(int *)start = 1; /* Print header first */ - if (step == 0) { + if (step == 0) buf += sprintf(buf, "YAFFS built:" __DATE__ " " __TIME__ "\n%s\n%s\n", yaffs_fs_c_version, yaffs_guts_c_version); - } + else if (step == 1) + buf += sprintf(buf,"\n"); + else { + step-=2; + + /* hold lock_kernel while traversing yaffs_dev_list */ + lock_kernel(); - /* hold lock_kernel while traversing yaffs_dev_list */ - lock_kernel(); + /* Locate and print the Nth entry. Order N-squared but N is small. */ + ylist_for_each(item, &yaffs_context_list) { + struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList); + yaffs_Device *dev = dc->dev; - /* Locate and print the Nth entry. Order N-squared but N is small. */ - ylist_for_each(item, &yaffs_dev_list) { - yaffs_Device *dev = ylist_entry(item, yaffs_Device, devList); - if (n < step) { - n++; - continue; + if (n < (step & ~1)) { + n+=2; + continue; + } + if((step & 1)==0){ + buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->param.name); + buf = yaffs_dump_dev_part0(buf, dev); + } else + buf = yaffs_dump_dev_part1(buf, dev); + + break; } - buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->name); - buf = yaffs_dump_dev(buf, dev); - break; + unlock_kernel(); } - unlock_kernel(); return buf - page < count ? buf - page : count; } @@ -2187,6 +2651,7 @@ static struct { {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, {"scan", YAFFS_TRACE_SCAN}, {"tracing", YAFFS_TRACE_TRACING}, + {"sync", YAFFS_TRACE_SYNC}, {"verify", YAFFS_TRACE_VERIFY}, {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, @@ -2200,14 +2665,14 @@ static struct { }; #define MAX_MASK_NAME_LENGTH 40 -static int yaffs_proc_write(struct file *file, const char *buf, +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]; + char substring[MAX_MASK_NAME_LENGTH + 1]; int i; int done = 0; int add, len = 0; @@ -2217,9 +2682,8 @@ static int yaffs_proc_write(struct file *file, const char *buf, while (!done && (pos < count)) { done = 1; - while ((pos < count) && isspace(buf[pos])) { + while ((pos < count) && isspace(buf[pos])) pos++; - } switch (buf[pos]) { case '+': @@ -2236,20 +2700,21 @@ static int yaffs_proc_write(struct file *file, const char *buf, 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 = '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){ + 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; @@ -2260,7 +2725,7 @@ static int yaffs_proc_write(struct file *file, const char *buf, if (mask_name != NULL) { done = 0; - switch(add) { + switch (add) { case '-': rg &= ~mask_bitfield; break; @@ -2279,19 +2744,26 @@ static int yaffs_proc_write(struct file *file, const char *buf, yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS; - printk("new trace = 0x%08X\n",yaffs_traceMask); + printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_traceMask); 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("%c%s\n", flag, mask_flags[i].mask_name); + 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 { struct file_system_type *fst; @@ -2299,12 +2771,8 @@ struct file_system_to_install { }; static struct file_system_to_install fs_to_install[] = { -//#ifdef CONFIG_YAFFS_YAFFS1 {&yaffs_fs_type, 0}, -//#endif -//#ifdef CONFIG_YAFFS_YAFFS2 {&yaffs2_fs_type, 0}, -//#endif {NULL, 0} }; @@ -2325,9 +2793,8 @@ static int __init init_yaffs_fs(void) my_proc_entry->write_proc = yaffs_proc_write; my_proc_entry->read_proc = yaffs_proc_read; my_proc_entry->data = NULL; - } else { + } else return -ENOMEM; - } /* Now add the file system entries */ @@ -2335,9 +2802,8 @@ static int __init init_yaffs_fs(void) while (fsinst->fst && !error) { error = register_filesystem(fsinst->fst); - if (!error) { + if (!error) fsinst->installed = 1; - } fsinst++; } @@ -2376,7 +2842,6 @@ static void __exit exit_yaffs_fs(void) } fsinst++; } - } module_init(init_yaffs_fs)