X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=direct%2Fyaffsfs.c;h=41d37f46601f1939e90ea883ec2002b1e348b3d6;hp=ddbdcdb65354743c00bc02efc70e8111044f6119;hb=22f31a41cbb9a08e67204279fb3b37e400309f1c;hpb=b0173df3b2c8cc1f68d877a5a64e0f0ca93c0bd6 diff --git a/direct/yaffsfs.c b/direct/yaffsfs.c index ddbdcdb..41d37f4 100644 --- a/direct/yaffsfs.c +++ b/direct/yaffsfs.c @@ -30,16 +30,9 @@ #define YAFFSFS_RW_SHIFT (13) #define YAFFSFS_RW_SIZE (1<=0){ in = &yaffsfs_inode[ret]; if(!in->iObj) @@ -152,16 +177,27 @@ static int yaffsfs_GetInodeIdForObject(yaffs_Object *obj) return ret; } + +static int yaffsfs_CountHandles(struct yaffs_obj *obj) +{ + int i = yaffsfs_FindInodeIdForObject(obj); + + if(i >= 0) + return yaffsfs_inode[i].count; + else + return 0; +} + static void yaffsfs_ReleaseInode(yaffsfs_Inode *in) { - yaffs_Object *obj; + struct yaffs_obj *obj; obj = in->iObj; if(obj->unlinked) - yaffs_DeleteObject(obj); + yaffs_del_obj(obj); - obj->myInode = NULL; + obj->my_inode = NULL; in->iObj = NULL; } @@ -203,7 +239,7 @@ static int yaffsfs_GetNewHandle(void) } /* - * yaffs_GetHandle + * yaffs_get_handle * Increase use of handle when reading/writing a file */ static int yaffsfs_GetHandle(int handle) @@ -217,7 +253,7 @@ static int yaffsfs_GetHandle(int handle) } /* - * yaffs_PutHandle + * yaffs_put_handle * Let go of a handle when closing a file or aborting an open or * ending a read or write. */ @@ -241,7 +277,7 @@ static int yaffsfs_PutHandle(int handle) /* - * Stuff to search for a directory from a path + * Stuff to handle names. */ @@ -253,7 +289,7 @@ int yaffsfs_Match(YCHAR a, YCHAR b) int yaffsfs_IsPathDivider(YCHAR ch) { - YCHAR *str = YAFFS_PATH_DIVIDERS; + const YCHAR *str = YAFFS_PATH_DIVIDERS; while(*str){ if(*str == ch) @@ -264,6 +300,25 @@ int yaffsfs_IsPathDivider(YCHAR ch) return 0; } +int yaffsfs_CheckNameLength(const char *name) +{ + int retVal = 0; + + int nameLength = yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH+1); + + if(nameLength == 0){ + yaffsfs_SetError(-ENOENT); + retVal = -1; + } else if (nameLength > YAFFS_MAX_NAME_LENGTH){ + yaffsfs_SetError(-ENAMETOOLONG); + retVal = -1; + } + + return retVal; +} + +LIST_HEAD(yaffsfs_deviceList); + /* * yaffsfs_FindDevice * yaffsfs_FindRoot @@ -271,12 +326,13 @@ int yaffsfs_IsPathDivider(YCHAR ch) * Curveballs: Should match paths that end in '/' too * Curveball2 Might have "/x/ and "/x/y". Need to return the longest match */ -static yaffs_Device *yaffsfs_FindDevice(const YCHAR *path, YCHAR **restOfPath) +static struct yaffs_dev *yaffsfs_FindDevice(const YCHAR *path, YCHAR **restOfPath) { - yaffsfs_DeviceConfiguration *cfg = yaffsfs_configurationList; + struct list_head *cfg; const YCHAR *leftOver; const YCHAR *p; - yaffs_Device *retval = NULL; + struct yaffs_dev *retval = NULL; + struct yaffs_dev *dev = NULL; int thisMatchLength; int longestMatch = -1; int matching; @@ -286,9 +342,10 @@ static yaffs_Device *yaffsfs_FindDevice(const YCHAR *path, YCHAR **restOfPath) * 1) Actually matches a prefix (ie /a amd /abc will not match * 2) Matches the longest. */ - while(cfg && cfg->prefix && cfg->dev){ + list_for_each(cfg, &yaffsfs_deviceList){ + dev = list_entry(cfg, struct yaffs_dev, dev_list); leftOver = path; - p = cfg->prefix; + p = dev->param.name; thisMatchLength = 0; matching = 1; @@ -319,87 +376,55 @@ static yaffs_Device *yaffsfs_FindDevice(const YCHAR *path, YCHAR **restOfPath) /* Skip over any /s in leftOver */ while(yaffsfs_IsPathDivider(*leftOver)) leftOver++; - - - if( matching && (thisMatchLength > longestMatch)){ - /* Matched prefix */ - *restOfPath = (YCHAR *)leftOver; - retval = cfg->dev; - longestMatch = thisMatchLength; - } - - cfg++; - } - return retval; -} - -#if 0 -static yaffs_Device *yaffsfs_FindDevice(const YCHAR *path, YCHAR **restOfPath) -{ - yaffsfs_DeviceConfiguration *cfg = yaffsfs_configurationList; - const YCHAR *leftOver; - const YCHAR *p; - yaffs_Device *retval = NULL; - int thisMatchLength; - int longestMatch = -1; - /* - * Check all configs, choose the one that: - * 1) Actually matches a prefix (ie /a amd /abc will not match - * 2) Matches the longest. - */ - while(cfg && cfg->prefix && cfg->dev){ - leftOver = path; - p = cfg->prefix; - thisMatchLength = 0; - - while(*p && /* unmatched part of prefix */ - !(yaffsfs_IsPathDivider(*p) && (p[1] == 0)) && - *leftOver && yaffsfs_Match(*p,*leftOver)){ - p++; - leftOver++; - thisMatchLength++; - } + // Skip over any /s in p + while(yaffsfs_IsPathDivider(*p)) + p++; + // p should now be at the end of the string (ie. fully matched) + if(*p) + matching = 0; - if((!*p || (yaffsfs_IsPathDivider(*p) && (p[1] == 0))) && /* end of prefix */ - (!*leftOver || yaffsfs_IsPathDivider(*leftOver)) && /* no more in this path name part */ - (thisMatchLength > longestMatch)){ - /* Matched prefix */ + if( matching && (thisMatchLength > longestMatch)) + { + // Matched prefix *restOfPath = (YCHAR *)leftOver; - retval = cfg->dev; + retval = dev; longestMatch = thisMatchLength; } - cfg++; + } return retval; } -#endif -static yaffs_Object *yaffsfs_FindRoot(const YCHAR *path, YCHAR **restOfPath) + +static struct yaffs_obj *yaffsfs_FindRoot(const YCHAR *path, YCHAR **restOfPath) { - yaffs_Device *dev; + struct yaffs_dev *dev; dev= yaffsfs_FindDevice(path,restOfPath); - if(dev && dev->isMounted){ - return dev->rootDir; + if(dev && dev->is_mounted){ + return dev->root_dir; } return NULL; } -static yaffs_Object *yaffsfs_FollowLink(yaffs_Object *obj,int symDepth) +static struct yaffs_obj *yaffsfs_FollowLink(struct yaffs_obj *obj,int symDepth) { - while(obj && obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK){ - YCHAR *alias = obj->variant.symLinkVariant.alias; + if(obj) + obj = yaffs_get_equivalent_obj(obj); + + while(obj && obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){ + YCHAR *alias = obj->variant.symlink_variant.alias; if(yaffsfs_IsPathDivider(*alias)) /* Starts with a /, need to scan from root up */ - obj = yaffsfs_FindObject(NULL,alias,symDepth++); + obj = yaffsfs_FindObject(NULL,alias,symDepth++,1); else /* Relative to here, so use the parent of the symlink as a start */ - obj = yaffsfs_FindObject(obj->parent,alias,symDepth++); + obj = yaffsfs_FindObject(obj->parent,alias,symDepth++,1); } return obj; } @@ -411,10 +436,10 @@ static yaffs_Object *yaffsfs_FollowLink(yaffs_Object *obj,int symDepth) * * eg. "/data/xx/ff" --> puts name="ff" and returns the directory "/data/xx" */ -static yaffs_Object *yaffsfs_DoFindDirectory(yaffs_Object *startDir, +static struct yaffs_obj *yaffsfs_DoFindDirectory(struct yaffs_obj *startDir, const YCHAR *path, YCHAR **name, int symDepth) { - yaffs_Object *dir; + struct yaffs_obj *dir; YCHAR *restOfPath; YCHAR str[YAFFS_MAX_NAME_LENGTH+1]; int i; @@ -461,13 +486,11 @@ static yaffs_Object *yaffsfs_DoFindDirectory(yaffs_Object *startDir, else if(yaffs_strcmp(str,_Y("..")) == 0) dir = dir->parent; else{ - dir = yaffs_FindObjectByName(dir,str); - - while(dir && dir->variantType == YAFFS_OBJECT_TYPE_SYMLINK) - dir = yaffsfs_FollowLink(dir,symDepth); + dir = yaffs_find_by_name(dir,str); + dir = yaffsfs_FollowLink(dir,symDepth); - if(dir && dir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) + if(dir && dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) dir = NULL; } } @@ -476,7 +499,7 @@ static yaffs_Object *yaffsfs_DoFindDirectory(yaffs_Object *startDir, return NULL; } -static yaffs_Object *yaffsfs_FindDirectory(yaffs_Object *relativeDirectory, +static struct yaffs_obj *yaffsfs_FindDirectory(struct yaffs_obj *relativeDirectory, const YCHAR *path,YCHAR **name,int symDepth) { return yaffsfs_DoFindDirectory(relativeDirectory,path,name,symDepth); @@ -485,17 +508,23 @@ static yaffs_Object *yaffsfs_FindDirectory(yaffs_Object *relativeDirectory, /* * yaffsfs_FindObject turns a path for an existing object into the object */ -static yaffs_Object *yaffsfs_FindObject(yaffs_Object *relativeDirectory, const YCHAR *path,int symDepth) +static struct yaffs_obj *yaffsfs_FindObject(struct yaffs_obj *relativeDirectory, const YCHAR *path,int symDepth, int getEquiv) { - yaffs_Object *dir; + struct yaffs_obj *dir; + struct yaffs_obj *obj; YCHAR *name; dir = yaffsfs_FindDirectory(relativeDirectory,path,&name,symDepth); if(dir && *name) - return yaffs_FindObjectByName(dir,name); + obj = yaffs_find_by_name(dir,name); + else + obj = dir; - return dir; + if(getEquiv) + obj = yaffs_get_equivalent_obj(obj); + + return obj; } @@ -527,16 +556,27 @@ int yaffs_dup(int fd) } -int yaffs_open(const YCHAR *path, int oflag, int mode) + + +int yaffs_open_sharing(const YCHAR *path, int oflag, int mode, int sharing) { - yaffs_Object *obj = NULL; - yaffs_Object *dir = NULL; + struct yaffs_obj *obj = NULL; + struct yaffs_obj *dir = NULL; YCHAR *name; int handle = -1; - yaffsfs_Handle *h = NULL; + yaffsfs_Handle *yh = NULL; int openDenied = 0; int symDepth = 0; int errorReported = 0; + int rwflags = oflag & ( O_RDWR | O_RDONLY | O_WRONLY); + u8 shareRead = (sharing & YAFFS_SHARE_READ) ? 1 : 0; + u8 shareWrite = (sharing & YAFFS_SHARE_WRITE) ? 1 : 0; + u8 sharedReadAllowed; + u8 sharedWriteAllowed; + u8 alreadyReading; + u8 alreadyWriting; + u8 readRequested; + u8 writeRequested; /* O_EXCL only has meaning if O_CREAT is specified */ if(!(oflag & O_CREAT)) @@ -548,68 +588,135 @@ int yaffs_open(const YCHAR *path, int oflag, int mode) /* Todo: Are there any more flag combos to sanitise ? */ + /* Figure out if reading or writing is requested */ + + readRequested = (rwflags == O_RDWR || rwflags == O_RDONLY) ? 1 : 0; + writeRequested = (rwflags == O_RDWR || rwflags == O_WRONLY) ? 1 : 0; yaffsfs_Lock(); handle = yaffsfs_GetNewHandle(); - if(handle >= 0){ - - h = yaffsfs_GetHandlePointer(handle); + if(handle < 0){ + yaffsfs_SetError(-ENFILE); + errorReported = 1; + } else { + yh = yaffsfs_GetHandlePointer(handle); /* try to find the exisiting object */ - obj = yaffsfs_FindObject(NULL,path,0); - - if(obj && obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) - obj = yaffsfs_FollowLink(obj,symDepth++); + obj = yaffsfs_FindObject(NULL,path,0,1); - if(obj) - obj = yaffs_GetEquivalentObject(obj); + obj = yaffsfs_FollowLink(obj,symDepth++); - if(obj && obj->variantType != YAFFS_OBJECT_TYPE_FILE) + if(obj && + obj->variant_type != YAFFS_OBJECT_TYPE_FILE && + obj->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) obj = NULL; + if(obj){ - /* The file already exists */ + /* The file already exists or it might be a directory */ + + /* If it is a directory then we can't open it as a file */ + if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY){ + openDenied = 1; + yaffsfs_SetError(-EISDIR); + errorReported = 1; + } /* Open should fail if O_CREAT and O_EXCL are specified since * the file exists */ - if((oflag & O_EXCL) && (oflag & O_CREAT)){ + if(!errorReported && (oflag & O_EXCL) && (oflag & O_CREAT)){ openDenied = 1; yaffsfs_SetError(-EEXIST); errorReported = 1; } /* Check file permissions */ - if( (oflag & (O_RDWR | O_WRONLY)) == 0 && /* ie O_RDONLY */ - !(obj->yst_mode & S_IREAD)) + if( readRequested && !(obj->yst_mode & S_IREAD)) openDenied = 1; - if( (oflag & O_RDWR) && - !(obj->yst_mode & S_IREAD)) + if( writeRequested && !(obj->yst_mode & S_IWRITE)) openDenied = 1; - if( (oflag & (O_RDWR | O_WRONLY)) && - !(obj->yst_mode & S_IWRITE)) - openDenied = 1; + if(openDenied && !errorReported ) { + /* Error if the file exists but permissions are refused. */ + yaffsfs_SetError(-EACCES); + errorReported = 1; + } + + /* Check sharing of an existing object. */ + if(!openDenied){ + yaffsfs_Handle *hx; + int i; + sharedReadAllowed = 1; + sharedWriteAllowed = 1; + alreadyReading = 0; + alreadyWriting = 0; + for( i = 0; i < YAFFSFS_N_HANDLES; i++){ + hx = &yaffsfs_handle[i]; + if(hx->useCount > 0 && + hx->inodeId >= 0 && + yaffsfs_inode[hx->inodeId].iObj == obj){ + if(!hx->shareRead) + sharedReadAllowed = 0; + if(!hx->shareWrite) + sharedWriteAllowed = 0; + if(hx->reading) + alreadyReading = 1; + if(hx->writing) + alreadyWriting = 1; + } + } + + - } else if((oflag & O_CREAT)) { - /* Let's see if we can create this file */ + if((!sharedReadAllowed && readRequested)|| + (!shareRead && alreadyReading) || + (!sharedWriteAllowed && writeRequested) || + (!shareWrite && alreadyWriting)){ + openDenied = 1; + yaffsfs_SetError(-EBUSY); + errorReported=1; + } + } + + } + + /* If we could not open an existing object, then let's see if + * the directory exists. If not, error. + */ + if(!obj && !errorReported){ dir = yaffsfs_FindDirectory(NULL,path,&name,0); - if(dir && dir->myDev->readOnly){ + if(!dir){ + yaffsfs_SetError(-ENOTDIR); + errorReported = 1; + } + } + + if(!obj && dir && !errorReported && (oflag & O_CREAT)) { + /* Let's see if we can create this file if it does not exist. */ + if(dir->my_dev->read_only){ yaffsfs_SetError(-EINVAL); errorReported = 1; - } else if(dir) - obj = yaffs_MknodFile(dir,name,mode,0,0); - else { - yaffsfs_SetError(-ENOTDIR); + } else + obj = yaffs_create_file(dir,name,mode,0,0); + + if(!obj && !errorReported){ + yaffsfs_SetError(-ENOSPC); errorReported = 1; } } + if(!obj && dir && !errorReported && !(oflag & O_CREAT)) { + /* Error if the file does not exist and CREAT is not set. */ + yaffsfs_SetError(-ENOENT); + errorReported = 1; + } + if(obj && !openDenied) { int inodeId = yaffsfs_GetInodeIdForObject(obj); @@ -620,22 +727,23 @@ int yaffs_open(const YCHAR *path, int oflag, int mode) */ } - h->inodeId = inodeId; - h->readOnly = (oflag & (O_WRONLY | O_RDWR)) ? 0 : 1; - h->append = (oflag & O_APPEND) ? 1 : 0; - h->position = 0; + yh->inodeId = inodeId; + yh->reading = readRequested; + yh->writing = writeRequested; + yh->append = (oflag & O_APPEND) ? 1 : 0; + yh->position = 0; + yh->shareRead = shareRead; + yh->shareWrite = shareWrite; /* Hook inode to object */ - obj->myInode = (void*) &yaffsfs_inode[inodeId]; + obj->my_inode = (void*) &yaffsfs_inode[inodeId]; - if((oflag & O_TRUNC) && !h->readOnly) - yaffs_ResizeFile(obj,0); + if((oflag & O_TRUNC) && yh->writing) + yaffs_resize_file(obj,0); } else { yaffsfs_PutHandle(handle); - if(!errorReported) { - yaffsfs_SetError(-EACCES); - errorReported = 1; - } + if(!errorReported) + yaffsfs_SetError(0); /* Problem */ handle = -1; } } @@ -645,6 +753,11 @@ int yaffs_open(const YCHAR *path, int oflag, int mode) return handle; } +int yaffs_open(const YCHAR *path, int oflag, int mode) +{ + return yaffs_open_sharing(path, oflag, mode, YAFFS_SHARE_READ | YAFFS_SHARE_WRITE); +} + int yaffs_Dofsync(int fd,int datasync) { yaffsfs_Handle *h = NULL; @@ -656,7 +769,7 @@ int yaffs_Dofsync(int fd,int datasync) if(h && h->useCount > 0) /* flush the file */ - yaffs_FlushFile(yaffsfs_inode[h->inodeId].iObj,1,datasync); + yaffs_flush_file(yaffsfs_inode[h->inodeId].iObj,1,datasync); else { /* bad handle */ yaffsfs_SetError(-EBADF); @@ -694,7 +807,7 @@ int yaffs_close(int fd) if(h && h->useCount > 0) { /* clean up */ - yaffs_FlushFile(yaffsfs_inode[h->inodeId].iObj,1,0); + yaffs_flush_file(yaffsfs_inode[h->inodeId].iObj,1,0); yaffsfs_PutHandle(fd); retVal = 0; } else { @@ -713,14 +826,14 @@ int yaffs_close(int fd) int yaffsfs_do_read(int fd, void *vbuf, unsigned int nbyte, int isPread, int offset) { yaffsfs_Handle *h = NULL; - yaffs_Object *obj = NULL; + struct yaffs_obj *obj = NULL; int pos = 0; int startPos = 0; int nRead = 0; int nToRead = 0; int totalRead = 0; unsigned int maxRead; - __u8 *buf = (__u8 *)vbuf; + u8 *buf = (u8 *)vbuf; yaffsfs_Lock(); h = yaffsfs_GetHandlePointer(fd); @@ -730,7 +843,11 @@ int yaffsfs_do_read(int fd, void *vbuf, unsigned int nbyte, int isPread, int off /* bad handle */ yaffsfs_SetError(-EBADF); totalRead = -1; - } else if( h && obj){ + } else if(!h->reading){ + /* Not a reading handle */ + yaffsfs_SetError(-EINVAL); + totalRead = -1; + } else { if(isPread) startPos = offset; else @@ -738,8 +855,8 @@ int yaffsfs_do_read(int fd, void *vbuf, unsigned int nbyte, int isPread, int off pos = startPos; - if(yaffs_GetObjectFileLength(obj) > pos) - maxRead = yaffs_GetObjectFileLength(obj) - pos; + if(yaffs_get_obj_length(obj) > pos) + maxRead = yaffs_get_obj_length(obj) - pos; else maxRead = 0; @@ -753,7 +870,7 @@ int yaffsfs_do_read(int fd, void *vbuf, unsigned int nbyte, int isPread, int off nToRead = YAFFSFS_RW_SIZE - (pos & (YAFFSFS_RW_SIZE -1)); if(nToRead > nbyte) nToRead = nbyte; - nRead = yaffs_ReadDataFromFile(obj,buf,pos,nToRead); + nRead = yaffs_file_rd(obj,buf,pos,nToRead); if(nRead > 0){ totalRead += nRead; @@ -805,14 +922,14 @@ int yaffs_pread(int fd, void *buf, unsigned int nbyte, unsigned int offset) int yaffsfs_do_write(int fd, const void *vbuf, unsigned int nbyte, int isPwrite, int offset) { yaffsfs_Handle *h = NULL; - yaffs_Object *obj = NULL; + struct yaffs_obj *obj = NULL; int pos = 0; int startPos = 0; int nWritten = 0; int totalWritten = 0; - int writeThrough = 0; + int write_trhrough = 0; int nToWrite = 0; - const __u8 *buf = (const __u8 *)vbuf; + const u8 *buf = (const u8 *)vbuf; yaffsfs_Lock(); h = yaffsfs_GetHandlePointer(fd); @@ -822,14 +939,14 @@ int yaffsfs_do_write(int fd, const void *vbuf, unsigned int nbyte, int isPwrite, /* bad handle */ yaffsfs_SetError(-EBADF); totalWritten = -1; - } else if( h && obj && (h->readOnly || obj->myDev->readOnly)){ + } else if( h && obj && (!h->writing || obj->my_dev->read_only)){ yaffsfs_SetError(-EINVAL); totalWritten=-1; - } else if( h && obj){ - if(isPwrite) - startPos = offset; + } else { if(h->append) - startPos = yaffs_GetObjectFileLength(obj); + startPos = yaffs_get_obj_length(obj); + else if(isPwrite) + startPos = offset; else startPos = h->position; @@ -840,7 +957,7 @@ int yaffsfs_do_write(int fd, const void *vbuf, unsigned int nbyte, int isPwrite, if(nToWrite > nbyte) nToWrite = nbyte; - nWritten = yaffs_WriteDataToFile(obj,buf,pos,nToWrite,writeThrough); + nWritten = yaffs_wr_file(obj,buf,pos,nToWrite,write_trhrough); if(nWritten > 0){ totalWritten += nWritten; pos += nWritten; @@ -890,36 +1007,35 @@ int yaffs_pwrite(int fd, const void *buf, unsigned int nbyte, unsigned int offse } -int yaffs_truncate(const YCHAR *path,off_t newSize) +int yaffs_truncate(const YCHAR *path,off_t new_size) { - yaffs_Object *obj = NULL; + struct yaffs_obj *obj = NULL; int result = YAFFS_FAIL; yaffsfs_Lock(); - obj = yaffsfs_FindObject(NULL,path,0); - if(obj) - obj = yaffs_GetEquivalentObject(obj); + obj = yaffsfs_FindObject(NULL,path,0,1); if(!obj) yaffsfs_SetError(-ENOENT); - else if(obj->variantType != YAFFS_OBJECT_TYPE_FILE) + else if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE) yaffsfs_SetError(-EISDIR); - else if(obj->myDev->readOnly) + else if(obj->my_dev->read_only) + yaffsfs_SetError(-EACCES); + else if(new_size < 0 || new_size > YAFFS_MAX_FILE_SIZE) yaffsfs_SetError(-EINVAL); else - result = yaffs_ResizeFile(obj,newSize); + result = yaffs_resize_file(obj,new_size); yaffsfs_Unlock(); - return (result) ? 0 : -1; } -int yaffs_ftruncate(int fd, off_t newSize) +int yaffs_ftruncate(int fd, off_t new_size) { yaffsfs_Handle *h = NULL; - yaffs_Object *obj = NULL; + struct yaffs_obj *obj = NULL; int result = 0; yaffsfs_Lock(); @@ -929,14 +1045,15 @@ int yaffs_ftruncate(int fd, off_t newSize) if(!h || !obj) /* bad handle */ yaffsfs_SetError(-EBADF); - else if(obj->myDev->readOnly) + else if(obj->my_dev->read_only) + yaffsfs_SetError(-EACCES); + else if( new_size < 0 || new_size > YAFFS_MAX_FILE_SIZE) yaffsfs_SetError(-EINVAL); else /* resize the file */ - result = yaffs_ResizeFile(obj,newSize); + result = yaffs_resize_file(obj,new_size); yaffsfs_Unlock(); - return (result) ? 0 : -1; } @@ -944,7 +1061,7 @@ int yaffs_ftruncate(int fd, off_t newSize) off_t yaffs_lseek(int fd, off_t offset, int whence) { yaffsfs_Handle *h = NULL; - yaffs_Object *obj = NULL; + struct yaffs_obj *obj = NULL; int pos = -1; int fSize = -1; @@ -952,30 +1069,28 @@ off_t yaffs_lseek(int fd, off_t offset, int whence) h = yaffsfs_GetHandlePointer(fd); obj = yaffsfs_GetHandleObject(fd); - if(!h || !obj) + if(!h || !obj){ /* bad handle */ yaffsfs_SetError(-EBADF); - else if(whence == SEEK_SET){ - if(offset >= 0) - pos = offset; - } - else if(whence == SEEK_CUR) { - if( (h->position + offset) >= 0) - pos = (h->position + offset); - } - else if(whence == SEEK_END) { - fSize = yaffs_GetObjectFileLength(obj); - if(fSize >= 0 && (fSize + offset) >= 0) - pos = fSize + offset; - } - - if(pos >= 0) - h->position = pos; - else { - /* todo error */ + } else { + if(whence == SEEK_SET){ + if(offset >= 0) + pos = offset; + } else if(whence == SEEK_CUR) { + if( (h->position + offset) >= 0) + pos = (h->position + offset); + } else if(whence == SEEK_END) { + fSize = yaffs_get_obj_length(obj); + if(fSize >= 0 && (fSize + offset) >= 0) + pos = fSize + offset; + } + + if(pos >= 0) + h->position = pos; + else + yaffsfs_SetError(-EINVAL); } - yaffsfs_Unlock(); return pos; @@ -984,27 +1099,27 @@ off_t yaffs_lseek(int fd, off_t offset, int whence) int yaffsfs_DoUnlink(const YCHAR *path,int isDirectory) { - yaffs_Object *dir = NULL; - yaffs_Object *obj = NULL; + struct yaffs_obj *dir = NULL; + struct yaffs_obj *obj = NULL; YCHAR *name; int result = YAFFS_FAIL; yaffsfs_Lock(); - obj = yaffsfs_FindObject(NULL,path,0); + obj = yaffsfs_FindObject(NULL,path,0,0); dir = yaffsfs_FindDirectory(NULL,path,&name,0); if(!dir) yaffsfs_SetError(-ENOTDIR); else if(!obj) yaffsfs_SetError(-ENOENT); - else if(obj->myDev->readOnly) + else if(obj->my_dev->read_only) yaffsfs_SetError(-EINVAL); - else if(!isDirectory && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) + else if(!isDirectory && obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) yaffsfs_SetError(-EISDIR); - else if(isDirectory && obj->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) + else if(isDirectory && obj->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) yaffsfs_SetError(-ENOTDIR); else { - result = yaffs_Unlink(dir,name); + result = yaffs_unlinker(dir,name); if(result == YAFFS_FAIL && isDirectory) yaffsfs_SetError(-ENOTEMPTY); @@ -1030,52 +1145,51 @@ int yaffs_unlink(const YCHAR *path) int yaffs_rename(const YCHAR *oldPath, const YCHAR *newPath) { - yaffs_Object *olddir = NULL; - yaffs_Object *newdir = NULL; - yaffs_Object *obj = NULL; + struct yaffs_obj *olddir = NULL; + struct yaffs_obj *newdir = NULL; + struct yaffs_obj *obj = NULL; YCHAR *oldname; YCHAR *newname; int result= YAFFS_FAIL; - int renameAllowed = 1; + int rename_allowed = 1; yaffsfs_Lock(); olddir = yaffsfs_FindDirectory(NULL,oldPath,&oldname,0); newdir = yaffsfs_FindDirectory(NULL,newPath,&newname,0); - obj = yaffsfs_FindObject(NULL,oldPath,0); + obj = yaffsfs_FindObject(NULL,oldPath,0,0); if(!olddir || !newdir || !obj) { /* bad file */ yaffsfs_SetError(-EBADF); - renameAllowed = 0; - } else if(obj->myDev->readOnly){ + rename_allowed = 0; + } else if(obj->my_dev->read_only){ yaffsfs_SetError(-EINVAL); - renameAllowed = 0; - } else if(olddir->myDev != newdir->myDev) { - /* oops must be on same device */ - /* todo error */ + rename_allowed = 0; + } else if(olddir->my_dev != newdir->my_dev) { + /* Rename must be on same device */ yaffsfs_SetError(-EXDEV); - renameAllowed = 0; - } else if(obj && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) { + rename_allowed = 0; + } else if(obj && obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) { /* * It is a directory, check that it is not being renamed to * being its own decendent. * Do this by tracing from the new directory back to the root, checking for obj */ - yaffs_Object *xx = newdir; + struct yaffs_obj *xx = newdir; - while( renameAllowed && xx){ + while( rename_allowed && xx){ if(xx == obj) - renameAllowed = 0; + rename_allowed = 0; xx = xx->parent; } - if(!renameAllowed) + if(!rename_allowed) yaffsfs_SetError(-EACCES); } - if(renameAllowed) - result = yaffs_RenameObject(olddir,oldname,newdir,newname); + if(rename_allowed) + result = yaffs_rename_obj(olddir,oldname,newdir,newname); yaffsfs_Unlock(); @@ -1083,31 +1197,30 @@ int yaffs_rename(const YCHAR *oldPath, const YCHAR *newPath) } -static int yaffsfs_DoStat(yaffs_Object *obj,struct yaffs_stat *buf) +static int yaffsfs_DoStat(struct yaffs_obj *obj,struct yaffs_stat *buf) { int retVal = -1; - if(obj) - obj = yaffs_GetEquivalentObject(obj); + obj = yaffs_get_equivalent_obj(obj); if(obj && buf){ - buf->st_dev = (int)obj->myDev->context; - buf->st_ino = obj->objectId; + buf->st_dev = (int)obj->my_dev->os_context; + buf->st_ino = obj->obj_id; buf->st_mode = obj->yst_mode & ~S_IFMT; /* clear out file type bits */ - if(obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) + if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) buf->st_mode |= S_IFDIR; - else if(obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) + else if(obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) buf->st_mode |= S_IFLNK; - else if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) + else if(obj->variant_type == YAFFS_OBJECT_TYPE_FILE) buf->st_mode |= S_IFREG; - buf->st_nlink = yaffs_GetObjectLinkCount(obj); + buf->st_nlink = yaffs_get_obj_link_count(obj); buf->st_uid = 0; buf->st_gid = 0;; buf->st_rdev = obj->yst_rdev; - buf->st_size = yaffs_GetObjectFileLength(obj); - buf->st_blksize = obj->myDev->nDataBytesPerChunk; + buf->st_size = yaffs_get_obj_length(obj); + buf->st_blksize = obj->my_dev->data_bytes_per_chunk; buf->st_blocks = (buf->st_size + buf->st_blksize -1)/buf->st_blksize; #if CONFIG_YAFFS_WINCE buf->yst_wince_atime[0] = obj->win_atime[0]; @@ -1128,12 +1241,13 @@ static int yaffsfs_DoStat(yaffs_Object *obj,struct yaffs_stat *buf) static int yaffsfs_DoStatOrLStat(const YCHAR *path, struct yaffs_stat *buf,int doLStat) { - yaffs_Object *obj; + struct yaffs_obj *obj; int retVal = -1; yaffsfs_Lock(); - obj = yaffsfs_FindObject(NULL,path,0); + + obj = yaffsfs_FindObject(NULL,path,0,1); if(!doLStat && obj) obj = yaffsfs_FollowLink(obj,0); @@ -1162,7 +1276,7 @@ int yaffs_lstat(const YCHAR *path, struct yaffs_stat *buf) int yaffs_fstat(int fd, struct yaffs_stat *buf) { - yaffs_Object *obj; + struct yaffs_obj *obj; int retVal = -1; @@ -1180,10 +1294,270 @@ int yaffs_fstat(int fd, struct yaffs_stat *buf) return retVal; } +#ifndef CONFIG_YAFFS_WINCE +/* xattrib functions */ + + +static int yaffs_do_setxattr(const YCHAR *path, const char *name, const void *data, int size, int flags, int follow) +{ + struct yaffs_obj *obj; + + int retVal = -1; + + yaffsfs_Lock(); + + obj = yaffsfs_FindObject(NULL,path,0,1); + + if(follow) + obj = yaffsfs_FollowLink(obj,0); + + if(obj) { + retVal = yaffs_set_xattrib(obj,name,data,size,flags); + if(retVal< 0){ + yaffsfs_SetError(retVal); + retVal = -1; + } + } else + /* todo error not found */ + yaffsfs_SetError(-ENOENT); + + yaffsfs_Unlock(); + + return retVal; + +} + +int yaffs_setxattr(const YCHAR *path, const char *name, const void *data, int size, int flags) +{ + return yaffs_do_setxattr(path, name, data, size, flags, 1); +} + +int yaffs_lsetxattr(const YCHAR *path, const char *name, const void *data, int size, int flags) +{ + return yaffs_do_setxattr(path, name, data, size, flags, 0); +} + + + +int yaffs_fsetxattr(int fd, const char *name, const void *data, int size, int flags) +{ + struct yaffs_obj *obj; + + int retVal = -1; + + yaffsfs_Lock(); + obj = yaffsfs_GetHandleObject(fd); + + if(obj) { + retVal = yaffs_set_xattrib(obj,name,data,size,flags); + if(retVal< 0){ + yaffsfs_SetError(retVal); + retVal = -1; + } + } else + /* bad handle */ + yaffsfs_SetError(-EBADF); + + yaffsfs_Unlock(); + + return retVal; +} + +static int yaffs_do_getxattr(const YCHAR *path, const char *name, void *data, int size, int follow) +{ + struct yaffs_obj *obj; + + int retVal = -1; + + yaffsfs_Lock(); + + obj = yaffsfs_FindObject(NULL,path,0,1); + + if(follow) + obj = yaffsfs_FollowLink(obj,0); + + if(obj) { + retVal = yaffs_get_xattrib(obj,name,data,size); + if(retVal< 0){ + yaffsfs_SetError(retVal); + retVal = -1; + } + } else + /* todo error not found */ + yaffsfs_SetError(-ENOENT); + + yaffsfs_Unlock(); + + return retVal; + +} + +int yaffs_getxattr(const YCHAR *path, const char *name, void *data, int size) +{ + return yaffs_do_getxattr( path, name, data, size, 1); +} +int yaffs_lgetxattr(const YCHAR *path, const char *name, void *data, int size) +{ + return yaffs_do_getxattr( path, name, data, size, 0); +} + + + +int yaffs_fgetxattr(int fd, const char *name, void *data, int size) +{ + struct yaffs_obj *obj; + + int retVal = -1; + + yaffsfs_Lock(); + obj = yaffsfs_GetHandleObject(fd); + + if(obj) { + retVal = yaffs_get_xattrib(obj,name,data,size); + if(retVal< 0){ + yaffsfs_SetError(retVal); + retVal = -1; + } + } else + /* bad handle */ + yaffsfs_SetError(-EBADF); + + yaffsfs_Unlock(); + + return retVal; +} + +static int yaffs_do_listxattr(const YCHAR *path, char *data, int size, int follow) +{ + struct yaffs_obj *obj; + + int retVal = -1; + + yaffsfs_Lock(); + + obj = yaffsfs_FindObject(NULL,path,0,1); + + if(follow) + obj = yaffsfs_FollowLink(obj,0); + + if(obj) { + retVal = yaffs_list_xattrib(obj, data,size); + if(retVal< 0){ + yaffsfs_SetError(retVal); + retVal = -1; + } + } else + /* todo error not found */ + yaffsfs_SetError(-ENOENT); + + yaffsfs_Unlock(); + + return retVal; + +} + +int yaffs_listxattr(const YCHAR *path, char *data, int size) +{ + return yaffs_do_listxattr(path, data, size, 1); +} + +int yaffs_llistxattr(const YCHAR *path, char *data, int size) +{ + return yaffs_do_listxattr(path, data, size, 0); +} + +int yaffs_flistxattr(int fd, char *data, int size) +{ + struct yaffs_obj *obj; + + int retVal = -1; + + yaffsfs_Lock(); + obj = yaffsfs_GetHandleObject(fd); + + if(obj) { + retVal = yaffs_list_xattrib(obj,data,size); + if(retVal< 0){ + yaffsfs_SetError(retVal); + retVal = -1; + } + } else + /* bad handle */ + yaffsfs_SetError(-EBADF); + + yaffsfs_Unlock(); + + return retVal; +} + +static int yaffs_do_removexattr(const YCHAR *path, const char *name, int follow) +{ + struct yaffs_obj *obj; + + int retVal = -1; + + yaffsfs_Lock(); + + obj = yaffsfs_FindObject(NULL,path,0,1); + + if(follow) + obj = yaffsfs_FollowLink(obj,0); + + if(obj) { + retVal = yaffs_remove_xattrib(obj,name); + if(retVal< 0){ + yaffsfs_SetError(retVal); + retVal = -1; + } + } else + /* todo error not found */ + yaffsfs_SetError(-ENOENT); + + yaffsfs_Unlock(); + + return retVal; + +} + +int yaffs_removexattr(const YCHAR *path, const char *name) +{ + return yaffs_do_removexattr(path, name, 1); +} + +int yaffs_lremovexattr(const YCHAR *path, const char *name) +{ + return yaffs_do_removexattr(path, name, 0); +} + +int yaffs_fremovexattr(int fd, const char *name) +{ + struct yaffs_obj *obj; + + int retVal = -1; + + yaffsfs_Lock(); + obj = yaffsfs_GetHandleObject(fd); + + if(obj){ + retVal = yaffs_remove_xattrib(obj,name); + if(retVal< 0){ + yaffsfs_SetError(retVal); + retVal = -1; + } + }else + /* bad handle */ + yaffsfs_SetError(-EBADF); + + yaffsfs_Unlock(); + + return retVal; +} +#endif + #ifdef CONFIG_YAFFS_WINCE int yaffs_get_wince_times(int fd, unsigned *wctime, unsigned *watime, unsigned *wmtime) { - yaffs_Object *obj; + struct yaffs_obj *obj; int retVal = -1; @@ -1222,7 +1596,7 @@ int yaffs_set_wince_times(int fd, const unsigned *watime, const unsigned *wmtime) { - yaffs_Object *obj; + struct yaffs_obj *obj; int result; int retVal = -1; @@ -1245,7 +1619,7 @@ int yaffs_set_wince_times(int fd, } obj->dirty = 1; - result = yaffs_FlushFile(obj,0,0); + result = yaffs_flush_file(obj,0,0); retVal = 0; } else /* bad handle */ @@ -1259,17 +1633,17 @@ int yaffs_set_wince_times(int fd, #endif -static int yaffsfs_DoChMod(yaffs_Object *obj,mode_t mode) +static int yaffsfs_DoChMod(struct yaffs_obj *obj,mode_t mode) { int result = -1; if(obj) - obj = yaffs_GetEquivalentObject(obj); + obj = yaffs_get_equivalent_obj(obj); if(obj) { obj->yst_mode = mode; obj->dirty = 1; - result = yaffs_FlushFile(obj,0,0); + result = yaffs_flush_file(obj,0,0); } return result == YAFFS_OK ? 0 : -1; @@ -1278,12 +1652,18 @@ static int yaffsfs_DoChMod(yaffs_Object *obj,mode_t mode) int yaffs_access(const YCHAR *path, int amode) { - yaffs_Object *obj; + struct yaffs_obj *obj; int retval = 0; + if(amode & ~(R_OK | W_OK | X_OK)){ + yaffsfs_SetError(-EINVAL); + return -1; + } + yaffsfs_Lock(); - obj = yaffsfs_FindObject(NULL,path,0); + + obj = yaffsfs_FindObject(NULL,path,0,1); if(obj) { int access_ok = 1; @@ -1314,16 +1694,17 @@ int yaffs_access(const YCHAR *path, int amode) int yaffs_chmod(const YCHAR *path, mode_t mode) { - yaffs_Object *obj; + struct yaffs_obj *obj; int retVal = -1; yaffsfs_Lock(); - obj = yaffsfs_FindObject(NULL,path,0); + + obj = yaffsfs_FindObject(NULL,path,0,1); if(!obj) yaffsfs_SetError(-ENOENT); - else if(obj->myDev->readOnly) + else if(obj->my_dev->read_only) yaffsfs_SetError(-EINVAL); else retVal = yaffsfs_DoChMod(obj,mode); @@ -1337,7 +1718,7 @@ int yaffs_chmod(const YCHAR *path, mode_t mode) int yaffs_fchmod(int fd, mode_t mode) { - yaffs_Object *obj; + struct yaffs_obj *obj; int retVal = -1; @@ -1346,7 +1727,7 @@ int yaffs_fchmod(int fd, mode_t mode) if(!obj) yaffsfs_SetError(-ENOENT); - else if(obj->myDev->readOnly) + else if(obj->my_dev->read_only) yaffsfs_SetError(-EINVAL); else retVal = yaffsfs_DoChMod(obj,mode); @@ -1359,24 +1740,59 @@ int yaffs_fchmod(int fd, mode_t mode) int yaffs_mkdir(const YCHAR *path, mode_t mode) { - yaffs_Object *parent = NULL; - yaffs_Object *dir = NULL; + struct yaffs_obj *parent = NULL; + struct yaffs_obj *dir = NULL; YCHAR *name; + YCHAR *use_path = NULL; + int path_length = 0; int retVal= -1; + int i; + + /* + * We don't have a definition for max path length. + * We will use 3 * max name length instead. + */ + + path_length = strnlen(path,(YAFFS_MAX_NAME_LENGTH+1)*3 +1); + + /* If the last character is a path divider, then we need to + * trim it back so that the name look-up works properly. + * eg. /foo/new_dir/ -> /foo/newdir + * Curveball: Need to handle multiple path dividers: + * eg. /foof/sdfse///// -> /foo/sdfse + */ + if(path_length > 0 && + yaffsfs_IsPathDivider(path[path_length-1])){ + use_path = YMALLOC(path_length + 1); + if(!use_path){ + yaffsfs_SetError(-ENOMEM); + return -1; + } + strcpy(use_path, path); + for(i = path_length-1; + i >= 0 && yaffsfs_IsPathDivider(use_path[i]); + i--) + use_path[i] = (YCHAR) 0; + path = use_path; + } + yaffsfs_Lock(); parent = yaffsfs_FindDirectory(NULL,path,&name,0); - if(parent && parent->myDev->readOnly){ + if(parent && yaffs_strnlen(name,5) == 0){ + /* Trying to make the root itself */ + yaffsfs_SetError(-EEXIST); + } else if(parent && parent->my_dev->read_only){ yaffsfs_SetError(-EINVAL); } else { if(parent) - dir = yaffs_MknodDirectory(parent,name,mode,0,0); + dir = yaffs_create_dir(parent,name,mode,0,0); if(dir) retVal = 0; else { if(!parent) yaffsfs_SetError(-ENOENT); /* missing path */ - else if (yaffs_FindObjectByName(parent,name)) + else if (yaffs_find_by_name(parent,name)) yaffsfs_SetError(-EEXIST); /* the name already exists */ else yaffsfs_SetError(-ENOSPC); /* just assume no space */ @@ -1386,24 +1802,38 @@ int yaffs_mkdir(const YCHAR *path, mode_t mode) yaffsfs_Unlock(); + if(use_path) + YFREE(use_path); + return retVal; } -int yaffs_mount2(const YCHAR *path,int readOnly) +void * yaffs_getdev(const YCHAR *path) +{ + struct yaffs_dev *dev=NULL; + YCHAR *dummy; + dev = yaffsfs_FindDevice(path,&dummy); + return (void *)dev; +} + +int yaffs_mount2(const YCHAR *path,int read_only) { int retVal=-1; int result=YAFFS_FAIL; - yaffs_Device *dev=NULL; + struct yaffs_dev *dev=NULL; YCHAR *dummy; - T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: Mounting %s" TENDSTR),path)); + T(YAFFS_TRACE_MOUNT,(TSTR("yaffs: Mounting %s" TENDSTR),path)); yaffsfs_Lock(); + + yaffsfs_InitHandles(); + dev = yaffsfs_FindDevice(path,&dummy); if(dev){ - if(!dev->isMounted){ - dev->readOnly = readOnly ? 1 : 0; - result = yaffs_GutsInitialise(dev); + if(!dev->is_mounted){ + dev->read_only = read_only ? 1 : 0; + result = yaffs_guts_initialise(dev); if(result == YAFFS_FAIL) /* todo error - mount failed */ yaffsfs_SetError(-ENOMEM); @@ -1430,17 +1860,17 @@ int yaffs_mount(const YCHAR *path) int yaffs_sync(const YCHAR *path) { int retVal=-1; - yaffs_Device *dev=NULL; + struct yaffs_dev *dev=NULL; YCHAR *dummy; yaffsfs_Lock(); dev = yaffsfs_FindDevice(path,&dummy); if(dev){ - if(dev->isMounted){ - - yaffs_FlushEntireDeviceCache(dev); - yaffs_CheckpointSave(dev); + if(dev->is_mounted){ + yaffs_flush_whole_cache(dev); + yaffs_checkpoint_save(dev); + retVal = 0; } else /* todo error - not mounted. */ @@ -1455,30 +1885,30 @@ int yaffs_sync(const YCHAR *path) } -int yaffs_remount(const YCHAR *path, int force, int readOnly) +int yaffs_remount(const YCHAR *path, int force, int read_only) { int retVal=-1; - yaffs_Device *dev=NULL; + struct yaffs_dev *dev=NULL; YCHAR *dummy; yaffsfs_Lock(); dev = yaffsfs_FindDevice(path,&dummy); if(dev){ - if(dev->isMounted){ + if(dev->is_mounted){ int i; int inUse; - yaffs_FlushEntireDeviceCache(dev); + yaffs_flush_whole_cache(dev); for(i = inUse = 0; i < YAFFSFS_N_HANDLES && !inUse && !force; i++){ - if(yaffsfs_handle[i].useCount>0 && yaffsfs_inode[yaffsfs_handle[i].inodeId].iObj->myDev == dev) + if(yaffsfs_handle[i].useCount>0 && yaffsfs_inode[yaffsfs_handle[i].inodeId].iObj->my_dev == dev) inUse = 1; /* the device is in use, can't unmount */ } if(!inUse || force){ - if(readOnly) - yaffs_CheckpointSave(dev); - dev->readOnly = readOnly ? 1 : 0; + if(read_only) + yaffs_checkpoint_save(dev); + dev->read_only = read_only ? 1 : 0; retVal = 0; } else yaffsfs_SetError(-EBUSY); @@ -1498,26 +1928,26 @@ int yaffs_remount(const YCHAR *path, int force, int readOnly) int yaffs_unmount2(const YCHAR *path, int force) { int retVal=-1; - yaffs_Device *dev=NULL; + struct yaffs_dev *dev=NULL; YCHAR *dummy; yaffsfs_Lock(); dev = yaffsfs_FindDevice(path,&dummy); if(dev){ - if(dev->isMounted){ + if(dev->is_mounted){ int i; int inUse; - yaffs_FlushEntireDeviceCache(dev); - yaffs_CheckpointSave(dev); + yaffs_flush_whole_cache(dev); + yaffs_checkpoint_save(dev); for(i = inUse = 0; i < YAFFSFS_N_HANDLES && !inUse; i++){ - if(yaffsfs_handle[i].useCount > 0 && yaffsfs_inode[yaffsfs_handle[i].inodeId].iObj->myDev == dev) + if(yaffsfs_handle[i].useCount > 0 && yaffsfs_inode[yaffsfs_handle[i].inodeId].iObj->my_dev == dev) inUse = 1; /* the device is in use, can't unmount */ } if(!inUse || force){ - yaffs_Deinitialise(dev); + yaffs_deinitialise(dev); retVal = 0; } else @@ -1546,14 +1976,14 @@ int yaffs_unmount(const YCHAR *path) loff_t yaffs_freespace(const YCHAR *path) { loff_t retVal=-1; - yaffs_Device *dev=NULL; + struct yaffs_dev *dev=NULL; YCHAR *dummy; yaffsfs_Lock(); dev = yaffsfs_FindDevice(path,&dummy); - if(dev && dev->isMounted){ - retVal = yaffs_GetNumberOfFreeChunks(dev); - retVal *= dev->nDataBytesPerChunk; + if(dev && dev->is_mounted){ + retVal = yaffs_get_n_free_chunks(dev); + retVal *= dev->data_bytes_per_chunk; } else yaffsfs_SetError(-EINVAL); @@ -1565,15 +1995,15 @@ loff_t yaffs_freespace(const YCHAR *path) loff_t yaffs_totalspace(const YCHAR *path) { loff_t retVal=-1; - yaffs_Device *dev=NULL; + struct yaffs_dev *dev=NULL; YCHAR *dummy; yaffsfs_Lock(); dev = yaffsfs_FindDevice(path,&dummy); - if(dev && dev->isMounted){ - retVal = (dev->param.endBlock - dev->param.startBlock + 1) - dev->param.nReservedBlocks; - retVal *= dev->param.nChunksPerBlock; - retVal *= dev->nDataBytesPerChunk; + if(dev && dev->is_mounted){ + retVal = (dev->param.end_block - dev->param.start_block + 1) - dev->param.n_reserved_blocks; + retVal *= dev->param.chunks_per_block; + retVal *= dev->data_bytes_per_chunk; } else yaffsfs_SetError(-EINVAL); @@ -1585,15 +2015,15 @@ loff_t yaffs_totalspace(const YCHAR *path) int yaffs_inodecount(const YCHAR *path) { loff_t retVal= -1; - yaffs_Device *dev=NULL; + struct yaffs_dev *dev=NULL; YCHAR *dummy; yaffsfs_Lock(); dev = yaffsfs_FindDevice(path,&dummy); - if(dev && dev->isMounted) { - int nObjects = dev->nObjectsCreated - dev->nFreeObjects; - if(nObjects > dev->nHardLinks) - retVal = nObjects - dev->nHardLinks; + if(dev && dev->is_mounted) { + int n_obj = dev->n_obj; + if(n_obj > dev->n_hardlinks) + retVal = n_obj - dev->n_hardlinks; } if(retVal < 0) @@ -1604,26 +2034,23 @@ int yaffs_inodecount(const YCHAR *path) } - -void yaffs_initialise(yaffsfs_DeviceConfiguration *cfgList) +void yaffs_add_device(struct yaffs_dev *dev) { + dev->is_mounted = 0; + dev->param.remove_obj_fn = yaffsfs_RemoveObjectCallback; - yaffsfs_DeviceConfiguration *cfg; + if(!dev->dev_list.next) + INIT_LIST_HEAD(&dev->dev_list); - yaffsfs_configurationList = cfgList; - - yaffsfs_InitHandles(); - - cfg = yaffsfs_configurationList; + list_add(&dev->dev_list,&yaffsfs_deviceList); +} - while(cfg && cfg->prefix && cfg->dev){ - cfg->dev->isMounted = 0; - cfg->dev->param.removeObjectCallback = yaffsfs_RemoveObjectCallback; - cfg++; - } +void yaffs_remove_device(struct yaffs_dev *dev) +{ + list_del_init(&dev->dev_list); +} -} /* Directory search stuff. */ @@ -1637,33 +2064,33 @@ void yaffs_initialise(yaffsfs_DeviceConfiguration *cfgList) typedef struct { - __u32 magic; + u32 magic; yaffs_dirent de; /* directory entry being used by this dsc */ YCHAR name[NAME_MAX+1]; /* name of directory being searched */ - yaffs_Object *dirObj; /* ptr to directory being searched */ - yaffs_Object *nextReturn; /* obj to be returned by next readddir */ + struct yaffs_obj *dirObj; /* ptr to directory being searched */ + struct yaffs_obj *nextReturn; /* obj to be returned by next readddir */ int offset; - struct ylist_head others; + struct list_head others; } yaffsfs_DirectorySearchContext; -static struct ylist_head search_contexts; +static struct list_head search_contexts; static void yaffsfs_SetDirRewound(yaffsfs_DirectorySearchContext *dsc) { if(dsc && dsc->dirObj && - dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){ + dsc->dirObj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY){ dsc->offset = 0; - if( ylist_empty(&dsc->dirObj->variant.directoryVariant.children)) + if( list_empty(&dsc->dirObj->variant.dir_variant.children)) dsc->nextReturn = NULL; else - dsc->nextReturn = ylist_entry(dsc->dirObj->variant.directoryVariant.children.next, - yaffs_Object,siblings); + dsc->nextReturn = list_entry(dsc->dirObj->variant.dir_variant.children.next, + struct yaffs_obj,siblings); } else { /* Hey someone isn't playing nice! */ } @@ -1673,28 +2100,28 @@ static void yaffsfs_DirAdvance(yaffsfs_DirectorySearchContext *dsc) { if(dsc && dsc->dirObj && - dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){ + dsc->dirObj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY){ if( dsc->nextReturn == NULL || - ylist_empty(&dsc->dirObj->variant.directoryVariant.children)) + list_empty(&dsc->dirObj->variant.dir_variant.children)) dsc->nextReturn = NULL; else { - struct ylist_head *next = dsc->nextReturn->siblings.next; + struct list_head *next = dsc->nextReturn->siblings.next; - if( next == &dsc->dirObj->variant.directoryVariant.children) + if( next == &dsc->dirObj->variant.dir_variant.children) dsc->nextReturn = NULL; /* end of list */ else - dsc->nextReturn = ylist_entry(next,yaffs_Object,siblings); + dsc->nextReturn = list_entry(next,struct yaffs_obj,siblings); } } else { /* Hey someone isn't playing nice! */ } } -static void yaffsfs_RemoveObjectCallback(yaffs_Object *obj) +static void yaffsfs_RemoveObjectCallback(struct yaffs_obj *obj) { - struct ylist_head *i; + struct list_head *i; yaffsfs_DirectorySearchContext *dsc; /* if search contexts not initilised then skip */ @@ -1705,9 +2132,9 @@ static void yaffsfs_RemoveObjectCallback(yaffs_Object *obj) * If any are the one being removed, then advance the dsc to * the next one to prevent a hanging ptr. */ - ylist_for_each(i, &search_contexts) { + list_for_each(i, &search_contexts) { if (i) { - dsc = ylist_entry(i, yaffsfs_DirectorySearchContext,others); + dsc = list_entry(i, yaffsfs_DirectorySearchContext,others); if(dsc->nextReturn == obj) yaffsfs_DirAdvance(dsc); } @@ -1718,14 +2145,14 @@ static void yaffsfs_RemoveObjectCallback(yaffs_Object *obj) yaffs_DIR *yaffs_opendir(const YCHAR *dirname) { yaffs_DIR *dir = NULL; - yaffs_Object *obj = NULL; + struct yaffs_obj *obj = NULL; yaffsfs_DirectorySearchContext *dsc = NULL; yaffsfs_Lock(); - obj = yaffsfs_FindObject(NULL,dirname,0); + obj = yaffsfs_FindObject(NULL,dirname,0,1); - if(obj && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){ + if(obj && obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY){ dsc = YMALLOC(sizeof(yaffsfs_DirectorySearchContext)); dir = (yaffs_DIR *)dsc; @@ -1735,12 +2162,12 @@ yaffs_DIR *yaffs_opendir(const YCHAR *dirname) dsc->magic = YAFFS_MAGIC; dsc->dirObj = obj; yaffs_strncpy(dsc->name,dirname,NAME_MAX); - YINIT_LIST_HEAD(&dsc->others); + INIT_LIST_HEAD(&dsc->others); if(!search_contexts.next) - YINIT_LIST_HEAD(&search_contexts); + INIT_LIST_HEAD(&search_contexts); - ylist_add(&dsc->others,&search_contexts); + list_add(&dsc->others,&search_contexts); yaffsfs_SetDirRewound(dsc); } @@ -1761,10 +2188,10 @@ struct yaffs_dirent *yaffs_readdir(yaffs_DIR *dirp) if(dsc && dsc->magic == YAFFS_MAGIC){ yaffsfs_SetError(0); if(dsc->nextReturn){ - dsc->de.d_ino = yaffs_GetEquivalentObject(dsc->nextReturn)->objectId; + dsc->de.d_ino = yaffs_get_equivalent_obj(dsc->nextReturn)->obj_id; dsc->de.d_dont_use = (unsigned)dsc->nextReturn; dsc->de.d_off = dsc->offset++; - yaffs_GetObjectName(dsc->nextReturn,dsc->de.d_name,NAME_MAX); + yaffs_get_obj_name(dsc->nextReturn,dsc->de.d_name,NAME_MAX); if(yaffs_strnlen(dsc->de.d_name,NAME_MAX+1) == 0) { /* this should not happen! */ @@ -1803,7 +2230,7 @@ int yaffs_closedir(yaffs_DIR *dirp) yaffsfs_Lock(); dsc->magic = 0; - ylist_del(&dsc->others); /* unhook from list */ + list_del(&dsc->others); /* unhook from list */ YFREE(dsc); yaffsfs_Unlock(); return 0; @@ -1814,18 +2241,18 @@ int yaffs_closedir(yaffs_DIR *dirp) int yaffs_symlink(const YCHAR *oldpath, const YCHAR *newpath) { - yaffs_Object *parent = NULL; - yaffs_Object *obj; + struct yaffs_obj *parent = NULL; + struct yaffs_obj *obj; YCHAR *name; int retVal= -1; int mode = 0; /* ignore for now */ yaffsfs_Lock(); parent = yaffsfs_FindDirectory(NULL,newpath,&name,0); - if(parent && parent->myDev->readOnly) + if(parent && parent->my_dev->read_only) yaffsfs_SetError(-EINVAL); else if(parent){ - obj = yaffs_MknodSymLink(parent,name,mode,0,0,oldpath); + obj = yaffs_create_symlink(parent,name,mode,0,0,oldpath); if(obj) retVal = 0; else{ @@ -1845,22 +2272,21 @@ int yaffs_symlink(const YCHAR *oldpath, const YCHAR *newpath) int yaffs_readlink(const YCHAR *path, YCHAR *buf, int bufsiz) { - yaffs_Object *obj = NULL; + struct yaffs_obj *obj = NULL; int retVal; - yaffsfs_Lock(); - obj = yaffsfs_FindObject(NULL,path,0); + obj = yaffsfs_FindObject(NULL,path,0,1); if(!obj) { yaffsfs_SetError(-ENOENT); retVal = -1; - } else if(obj->variantType != YAFFS_OBJECT_TYPE_SYMLINK) { + } else if(obj->variant_type != YAFFS_OBJECT_TYPE_SYMLINK) { yaffsfs_SetError(-EINVAL); retVal = -1; } else { - YCHAR *alias = obj->variant.symLinkVariant.alias; + YCHAR *alias = obj->variant.symlink_variant.alias; memset(buf,0,bufsiz); yaffs_strncpy(buf,alias,bufsiz - 1); retVal = 0; @@ -1872,29 +2298,27 @@ int yaffs_readlink(const YCHAR *path, YCHAR *buf, int bufsiz) int yaffs_link(const YCHAR *oldpath, const YCHAR *newpath) { /* Creates a link called newpath to existing oldpath */ - yaffs_Object *obj = NULL; - yaffs_Object *target = NULL; + struct yaffs_obj *obj = NULL; + struct yaffs_obj *target = NULL; int retVal = 0; - int newNameLength = 0; - yaffsfs_Lock(); - obj = yaffsfs_FindObject(NULL,oldpath,0); - target = yaffsfs_FindObject(NULL,newpath,0); + obj = yaffsfs_FindObject(NULL,oldpath,0,1); + target = yaffsfs_FindObject(NULL,newpath,0,0); if(!obj) { yaffsfs_SetError(-ENOENT); retVal = -1; - } else if(obj->myDev->readOnly){ + } else if(obj->my_dev->read_only){ yaffsfs_SetError(-EINVAL); retVal= -1; } else if(target) { yaffsfs_SetError(-EEXIST); retVal = -1; } else { - yaffs_Object *newdir = NULL; - yaffs_Object *link = NULL; + struct yaffs_obj *newdir = NULL; + struct yaffs_obj *link = NULL; YCHAR *newname; @@ -1903,23 +2327,15 @@ int yaffs_link(const YCHAR *oldpath, const YCHAR *newpath) if(!newdir){ yaffsfs_SetError(-ENOTDIR); retVal = -1; - }else if(newdir->myDev != obj->myDev){ + }else if(newdir->my_dev != obj->my_dev){ yaffsfs_SetError(-EXDEV); retVal = -1; } - newNameLength = yaffs_strnlen(newname,YAFFS_MAX_NAME_LENGTH+1); - - if(newNameLength == 0){ - yaffsfs_SetError(-ENOENT); - retVal = -1; - } else if (newNameLength > YAFFS_MAX_NAME_LENGTH){ - yaffsfs_SetError(-ENAMETOOLONG); - retVal = -1; - } + retVal = yaffsfs_CheckNameLength(newname); if(retVal == 0) { - link = yaffs_Link(newdir,newname,obj); + link = yaffs_link_obj(newdir,newname,obj); if(link) retVal = 0; else{ @@ -1939,28 +2355,55 @@ int yaffs_mknod(const YCHAR *pathname, mode_t mode, dev_t dev) return -1; } -int yaffs_DumpDevStruct(const YCHAR *path) + + +/* + * yaffs_n_handles() + * Returns number of handles attached to the object + */ +int yaffs_n_handles(const YCHAR *path) +{ + struct yaffs_obj *obj; + + obj = yaffsfs_FindObject(NULL,path,0,1); + + return yaffsfs_CountHandles(obj); +} + +int yaffs_get_error(void) +{ + return yaffsfs_GetLastError(); +} + +int yaffs_set_error(int error) +{ + /*yaffsfs_SetError does not return. So the program is assumed to have worked. */ + yaffsfs_SetError(error); + return 0; +} + +int yaffs_dump_dev(const YCHAR *path) { #if 0 YCHAR *rest; - yaffs_Object *obj = yaffsfs_FindRoot(path,&rest); + struct yaffs_obj *obj = yaffsfs_FindRoot(path,&rest); if(obj){ - yaffs_Device *dev = obj->myDev; + struct yaffs_dev *dev = obj->my_dev; printf("\n" - "nPageWrites.......... %d\n" - "nPageReads........... %d\n" - "nBlockErasures....... %d\n" - "nGCCopies............ %d\n" + "n_page_writes.......... %d\n" + "n_page_reads........... %d\n" + "n_erasures....... %d\n" + "n_gc_copies............ %d\n" "garbageCollections... %d\n" "passiveGarbageColl'ns %d\n" "\n", - dev->nPageWrites, - dev->nPageReads, - dev->nBlockErasures, - dev->nGCCopies, + dev->n_page_writes, + dev->n_page_reads, + dev->n_erasures, + dev->n_gc_copies, dev->garbageCollections, dev->passiveGarbageCollections );