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lsm: move the fs_context hook comments to security/security.c
This patch relocates the LSM hook function comments to the function definitions, in keeping with the current kernel conventions. This should make the hook descriptions more easily discoverable and easier to maintain. While formatting changes have been done to better fit the kernel-doc style, content changes have been kept to a minimum and limited to text which was obviously incorrect and/or outdated. It is expected the future patches will improve the quality of the function header comments. Acked-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
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@ -32,23 +32,6 @@
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/**
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* union security_list_options - Linux Security Module hook function list
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*
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* Security hooks for mount using fs_context.
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* [See also Documentation/filesystems/mount_api.rst]
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*
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* @fs_context_dup:
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* Allocate and attach a security structure to sc->security. This pointer
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* is initialised to NULL by the caller.
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* @fc indicates the new filesystem context.
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* @src_fc indicates the original filesystem context.
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* Return 0 on success or a negative error code on failure.
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* @fs_context_parse_param:
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* Userspace provided a parameter to configure a superblock. The LSM may
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* reject it with an error and may use it for itself, in which case it
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* should return 0; otherwise it should return -ENOPARAM to pass it on to
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* the filesystem.
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* @fc indicates the filesystem context.
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* @param The parameter.
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*
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* Security hooks for filesystem operations.
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*
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* @sb_alloc_security:
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@ -979,11 +979,34 @@ void security_bprm_committed_creds(struct linux_binprm *bprm)
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call_void_hook(bprm_committed_creds, bprm);
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}
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/**
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* security_fs_context_dup() - Duplicate a fs_context LSM blob
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* @fc: destination filesystem context
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* @src_fc: source filesystem context
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*
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* Allocate and attach a security structure to sc->security. This pointer is
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* initialised to NULL by the caller. @fc indicates the new filesystem context.
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* @src_fc indicates the original filesystem context.
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*
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* Return: Returns 0 on success or a negative error code on failure.
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*/
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int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc)
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{
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return call_int_hook(fs_context_dup, 0, fc, src_fc);
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}
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/**
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* security_fs_context_parse_param() - Configure a filesystem context
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* @fc: filesystem context
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* @param: filesystem parameter
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*
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* Userspace provided a parameter to configure a superblock. The LSM can
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* consume the parameter or return it to the caller for use elsewhere.
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*
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* Return: If the parameter is used by the LSM it should return 0, if it is
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* returned to the caller -ENOPARAM is returned, otherwise a negative
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* error code is returned.
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*/
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int security_fs_context_parse_param(struct fs_context *fc,
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struct fs_parameter *param)
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{
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