int uffs_open(const char *name, int oflag, ...)
{
uffs_Object *obj;
int ret = 0;
uffs_GlobalFsLockLock();
obj = uffs_GetObject();
if (obj == NULL) {
uffs_set_error(-UEMFILE);
ret = -1;
}
else {
if (uffs_OpenObject(obj, name, oflag) == U_FAIL) {
uffs_set_error(-uffs_GetObjectErr(obj));
uffs_PutObject(obj);
ret = -1;
}
else {
ret = OBJ2FD(obj);
}
}
uffs_GlobalFsLockUnlock();
return ret;
}
int uffs_stat(const char *name, struct uffs_stat *buf)
{
uffs_Object *obj;
int ret = 0;
int err = 0;
URET result;
obj = uffs_GetObject();
if (obj) {
if (*name && name[strlen(name) - 1] == '/') {
result = uffs_OpenObject(obj, name, UO_RDONLY | UO_DIR);
} else {
if ((result = uffs_OpenObject(obj, name, UO_RDONLY)) != U_SUCC) // try file
result = uffs_OpenObject(obj, name, UO_RDONLY | UO_DIR); // then try dir
}
if (result == U_SUCC) {
ret = do_stat(obj, buf);
uffs_CloseObject(obj);
} else {
err = uffs_GetObjectErr(obj);
ret = -1;
}
uffs_PutObject(obj);
} else {
err = UENOMEM;
ret = -1;
}
uffs_set_error(-err);
return ret;
}
uffs_DIR * uffs_opendir(const char *path)
{
int err = 0;
uffs_DIR *ret = NULL;
uffs_DIR *dirp = GetDirEntry();
if (dirp) {
dirp->obj = uffs_GetObject();
if (dirp->obj) {
if (uffs_OpenObject(dirp->obj, path, UO_RDONLY | UO_DIR) == U_SUCC) {
if (uffs_FindObjectOpen(&dirp->f, dirp->obj) == U_SUCC) {
ret = dirp;
goto ext;
} else {
uffs_CloseObject(dirp->obj);
}
} else {
err = uffs_GetObjectErr(dirp->obj);
}
uffs_PutObject(dirp->obj);
dirp->obj = NULL;
} else {
err = UEMFILE;
}
PutDirEntry(dirp);
} else {
err = UEMFILE;
}
ext:
uffs_set_error(-err);
return ret;
}
int uffs_flush(int fd)
{
int ret;
uffs_Object *obj = FD2OBJ(fd);
CHK_OBJ(obj, -1);
uffs_ClearObjectErr(obj);
ret = (uffs_FlushObject(obj) == U_SUCC) ? 0 : -1;
uffs_set_error(-uffs_GetObjectErr(obj));
return ret;
}
int uffs_eof(int fd)
{
int ret;
uffs_Object *obj = FD2OBJ(fd);
CHK_OBJ(obj, -1);
uffs_ClearObjectErr(obj);
ret = uffs_EndOfFile(obj);
uffs_set_error(-uffs_GetObjectErr(obj));
return ret;
}
long uffs_tell(int fd)
{
long ret;
uffs_Object *obj = FD2OBJ(fd);
CHK_OBJ(obj, -1);
uffs_ClearObjectErr(obj);
ret = (long) uffs_GetCurOffset(obj);
uffs_set_error(-uffs_GetObjectErr(obj));
return ret;
}
long uffs_seek(int fd, long offset, int origin)
{
int ret;
uffs_Object *obj = FD2OBJ(fd);
CHK_OBJ(obj, -1);
uffs_ClearObjectErr(obj);
ret = uffs_SeekObject(obj, offset, origin);
uffs_set_error(-uffs_GetObjectErr(obj));
return ret;
}
int uffs_write(int fd, void *data, int len)
{
int ret;
uffs_Object *obj = FD2OBJ(fd);
CHK_OBJ(obj, -1);
uffs_ClearObjectErr(obj);
ret = uffs_WriteObject(obj, data, len);
uffs_set_error(-uffs_GetObjectErr(obj));
return ret;
}
int uffs_truncate(int fd, long remain)
{
int ret;
uffs_Object *obj = FD2OBJ(fd);
CHK_OBJ(obj, -1);
uffs_ClearObjectErr(obj);
ret = (uffs_TruncateObject(obj, remain) == U_SUCC) ? 0 : -1;
uffs_set_error(-uffs_GetObjectErr(obj));
return ret;
}
int uffs_ftruncate(int fd, long remain)
{
int ret;
uffs_Object *obj;
CHK_OBJ_LOCK(fd, obj, -1);
uffs_ClearObjectErr(obj);
ret = (uffs_TruncateObject(obj, remain) == U_SUCC) ? 0 : -1;
uffs_set_error(-uffs_GetObjectErr(obj));
uffs_GlobalFsLockUnlock();
return ret;
}
int uffs_flush(int fd)
{
int ret;
uffs_Object *obj;
CHK_OBJ_LOCK(fd, obj, -1);
uffs_ClearObjectErr(obj);
ret = (uffs_FlushObject(obj) == U_SUCC) ? 0 : -1;
uffs_set_error(-uffs_GetObjectErr(obj));
uffs_GlobalFsLockUnlock();
return ret;
}
int uffs_eof(int fd)
{
int ret;
uffs_Object *obj;
CHK_OBJ_LOCK(fd, obj, -1);
uffs_ClearObjectErr(obj);
ret = uffs_EndOfFile(obj);
uffs_set_error(-uffs_GetObjectErr(obj));
uffs_GlobalFsLockUnlock();
return ret;
}
long uffs_tell(int fd)
{
long ret;
uffs_Object *obj;
CHK_OBJ_LOCK(fd, obj, -1);
uffs_ClearObjectErr(obj);
ret = (long) uffs_GetCurOffset(obj);
uffs_set_error(-uffs_GetObjectErr(obj));
uffs_GlobalFsLockUnlock();
return ret;
}
long uffs_seek(int fd, long offset, int origin)
{
int ret;
uffs_Object *obj;
CHK_OBJ_LOCK(fd, obj, -1);
uffs_ClearObjectErr(obj);
ret = uffs_SeekObject(obj, offset, origin);
uffs_set_error(-uffs_GetObjectErr(obj));
uffs_GlobalFsLockUnlock();
return ret;
}
int uffs_write(int fd, const void *data, int len)
{
int ret;
uffs_Object *obj;
CHK_OBJ_LOCK(fd, obj, -1);
uffs_ClearObjectErr(obj);
ret = uffs_WriteObject(obj, data, len);
uffs_set_error(-uffs_GetObjectErr(obj));
uffs_GlobalFsLockUnlock();
return ret;
}
int uffs_close(int fd)
{
int ret = 0;
uffs_Object *obj = FD2OBJ(fd);
CHK_OBJ(obj, -1);
uffs_ClearObjectErr(obj);
if (uffs_CloseObject(obj) == U_FAIL) {
uffs_set_error(-uffs_GetObjectErr(obj));
ret = -1;
} else {
uffs_PutObject(obj);
ret = 0;
}
return ret;
}
int uffs_close(int fd)
{
int ret = 0;
uffs_Object *obj;
CHK_OBJ_LOCK(fd, obj, -1);
uffs_ClearObjectErr(obj);
if (uffs_CloseObject(obj) == U_FAIL) {
uffs_set_error(-uffs_GetObjectErr(obj));
ret = -1;
}
else {
uffs_PutObject(obj);
ret = 0;
}
uffs_GlobalFsLockUnlock();
return ret;
}
int dfs_uffs_open(struct dfs_fd* fd)
{
if (fd->flags & DFS_O_DIRECTORY)
{ /* directory */
uffs_DIR* dirp;
int oflag = UO_DIR;
if (fd->flags & DFS_O_CREAT) oflag |= UO_CREATE;
if (fd->flags & DFS_O_RDONLY) oflag |= UO_RDONLY;
if (fd->flags & DFS_O_WRONLY) oflag |= UO_WRONLY;
if (oflag & UO_CREATE)
{ /* create directory right now */
uffs_Object* fp = uffs_GetObject();
if(fp == NULL)
{
uffs_set_error(-UEMFILE);
return U_FAIL;
}
if(uffs_OpenObject(fp, fd->path, oflag) != U_SUCC)
{
return U_FAIL;
}
/* release object hander */
uffs_PutObject(fp);
}
/* use directory handler */
dirp = uffs_opendir(fd->path);
if(dirp == NULL)
{
uffs_set_error(-UEMFILE);
return U_FAIL;
}
fd->data = dirp;
return U_SUCC;
}
else
{/* file */
uffs_Object *fp;
int mode = UO_RDONLY;
if (fd->flags & DFS_O_WRONLY) mode |= UO_WRONLY;
if ((fd->flags & DFS_O_ACCMODE) & DFS_O_RDWR) mode |= UO_WRONLY;
/* Opens the file, if it is existing. If not, a new file is created. */
if (fd->flags & DFS_O_CREAT) mode |= UO_CREATE;
/* Creates a new file. If the file is existing, it is truncated and overwritten. */
if (fd->flags & DFS_O_TRUNC) mode |= UO_TRUNC;
/* Creates a new file. The function fails if the file is already existing. */
if (fd->flags & DFS_O_EXCL) mode |= UO_EXCL;
/* get an object hander */
fp = uffs_GetObject();
if(fp == NULL)
{
uffs_set_error(-UEMFILE);
return U_FAIL;
}
if(uffs_OpenObject(fp, fd->path, mode) == U_SUCC)
{
struct uffs_stat stat_buf;
uffs_stat(fd->path, &stat_buf);
fd->pos = fp->pos;
fd->size = stat_buf.st_size;
fd->data = fp;
if(fd->flags & DFS_O_APPEND)
{
fd->pos = uffs_SeekObject(fp, 0, USEEK_END);
}
return U_SUCC;
}
else
{
/* open failed, return */
uffs_set_error(-uffs_GetObjectErr(fp));
/* release object hander */
uffs_PutObject(fp);
return U_FAIL;
}
}
}
