__shmem_file_setup

函数名称：mmon code

函数原型：static struct file *__shmem_file_setup(struct vfsmount *mnt, const char *name, loff_t size, unsigned long flags, unsigned int i_flags)

返回类型：struct file

参数：

类型	参数	名称
struct vfsmount *	mnt
const char *	name
loff_t	size
unsigned long	flags
unsigned int	i_flags

4099

如果是错误则返回:错误指示

4102

如果size小于0或size大于Page cache limit. The filesystems should put that into their s_maxbytes limits, otherwise bad things can happen in VM. 则返回:错误号

4105

如果shmem_acct_size(flags, size)则返回:错误号

4108

inode等于shmem_get_inode(mnt_sb, NULL, S_IFREG | S_IRWXUGO, 0, flags)

4110

如果此条件成立可能性小(为编译器优化)(!inode)则

4111

shmem_unacct_size(flags, size)

4112

返回:错误号

4114

i_flags或等于i_flags

4115

i_size等于size

4116

clear_nlink(inode)

4117

res等于错误号

4118

如果非是错误则res等于alloc_file_pseudo(inode, mnt, name, O_RDWR, & shmem_file_operations)

4121

如果是错误则放置一个索引节点

4123

返回:res

**调用者**
名称	描述
shmem_kernel_file_setup	shmem_kernel_file_setup - get an unlinked file living in tmpfs which must be* kernel internal. There will be NO LSM permission checks against the* underlying inode. So users of this interface must do LSM checks at a* higher layer
shmem_file_setup	shmem_file_setup - get an unlinked file living in tmpfs@name: name for dentry (to be seen in /proc//maps@size: size to be set for the file*@flags: VM_NORESERVE suppresses pre-accounting of the entire object size
shmem_file_setup_with_mnt	shmem_file_setup_with_mnt - get an unlinked file living in tmpfs@mnt: the tmpfs mount where the file will be created@name: name for dentry (to be seen in /proc//maps@size: size to be set for the file@flags: VM_NORESERVE suppresses pre-accounting

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码