ima_check_last_writer

Name:ima_check_last_writer

Proto:static void ima_check_last_writer(struct integrity_iint_cache *iint, struct inode *inode, struct file *file)

Type:void

Parameter:

Type	Parameter	Name
struct integrity_iint_cache *	iint
struct inode *	inode
struct file *	file

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If Not (mode & le is open for writing ) Then Return

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mutex_lock( & protects: version, flags, digest )

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If atomic_read( & i_writecount) == 1 Then

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update = st_and_clear_bit - Clear a bit and return its old value*@nr: Bit to clear*@addr: Address to count from* This is an atomic fully-ordered operation (implied full memory barrier).

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If Not IS_I_VERSION(inode) || Not de_eq_iversion - check whether the i_version counter has changed*@inode: inode to check*@old: old value to check against its i_version* Compare an i_version counter with a previous one || flags & IMA_NEW_FILE Then

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flags &= ~(IMA_DONE_MASK | IMA_NEW_FILE)

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measured_pcrs = 0

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If update Then ima_update_xattr(iint, file)

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mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.

**Caller**
Name	Describe
ima_file_free	ma_file_free - called on __fput()@file: pointer to file structure being freed Flag files that changed, based on i_version

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