1df9f0a731
The number of calls to ima_path_check()/ima_file_free() should be balanced. An extra call to fput(), indicates the file could have been accessed without first being measured. Although f_count is incremented/decremented in places other than fget/fput, like fget_light/fput_light and get_file, the current task must already hold a file refcnt. The call to __fput() is delayed until the refcnt becomes 0, resulting in ima_file_free() flagging any changes. - add hook to increment opencount for IPC shared memory(SYSV), shmat files, and /dev/zero - moved NULL iint test in opencount_get() Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
/*
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* Copyright (C) 2008 IBM Corporation
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* Author: Mimi Zohar <zohar@us.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*/
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#include <linux/fs.h>
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#ifndef _LINUX_IMA_H
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#define _LINUX_IMA_H
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#ifdef CONFIG_IMA
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extern int ima_bprm_check(struct linux_binprm *bprm);
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extern int ima_inode_alloc(struct inode *inode);
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extern void ima_inode_free(struct inode *inode);
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extern int ima_path_check(struct path *path, int mask);
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extern void ima_file_free(struct file *file);
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extern int ima_file_mmap(struct file *file, unsigned long prot);
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extern void ima_shm_check(struct file *file);
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#else
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static inline int ima_bprm_check(struct linux_binprm *bprm)
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{
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return 0;
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}
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static inline int ima_inode_alloc(struct inode *inode)
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{
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return 0;
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}
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static inline void ima_inode_free(struct inode *inode)
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{
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return;
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}
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static inline int ima_path_check(struct path *path, int mask)
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{
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return 0;
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}
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static inline void ima_file_free(struct file *file)
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{
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return;
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}
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static inline int ima_file_mmap(struct file *file, unsigned long prot)
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{
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return 0;
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}
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static inline void ima_shm_check(struct file *file)
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{
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return;
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}
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#endif /* CONFIG_IMA_H */
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#endif /* _LINUX_IMA_H */
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