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From:   Roberto Sassu <roberto.sassu@huaweicloud.com>
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        selinux@vger.kernel.org, Roberto Sassu <roberto.sassu@huawei.com>,
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Subject: [PATCH v3 07/25] ima: Align ima_post_read_file() definition with LSM infrastructure
Date:   Mon,  4 Sep 2023 15:33:57 +0200
Message-Id: <20230904133415.1799503-8-roberto.sassu@huaweicloud.com>
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From: Roberto Sassu <roberto.sassu@huawei.com>

Change ima_post_read_file() definition, so that it can be registered as
implementation of the post_read_file hook.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
 include/linux/ima.h               | 6 +++---
 security/integrity/ima/ima_main.c | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/ima.h b/include/linux/ima.h
index 93e3c6cdf1f8..6e4d060ff378 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -31,8 +31,8 @@ extern int ima_post_load_data(char *buf, loff_t size,
 			      enum kernel_load_data_id id, char *description);
 extern int ima_read_file(struct file *file, enum kernel_read_file_id id,
 			 bool contents);
-extern int ima_post_read_file(struct file *file, void *buf, loff_t size,
-			      enum kernel_read_file_id id);
+int ima_post_read_file(struct file *file, char *buf, loff_t size,
+		       enum kernel_read_file_id id);
 extern void ima_post_path_mknod(struct mnt_idmap *idmap,
 				const struct path *dir, struct dentry *dentry,
 				umode_t mode, unsigned int dev);
@@ -112,7 +112,7 @@ static inline int ima_read_file(struct file *file, enum kernel_read_file_id id,
 	return 0;
 }
 
-static inline int ima_post_read_file(struct file *file, void *buf, loff_t size,
+static inline int ima_post_read_file(struct file *file, char *buf, loff_t size,
 				     enum kernel_read_file_id id)
 {
 	return 0;
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index e9e2a3ad25a1..f8581032e62c 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -801,7 +801,7 @@ const int read_idmap[READING_MAX_ID] = {
  * On success return 0.  On integrity appraisal error, assuming the file
  * is in policy and IMA-appraisal is in enforcing mode, return -EACCES.
  */
-int ima_post_read_file(struct file *file, void *buf, loff_t size,
+int ima_post_read_file(struct file *file, char *buf, loff_t size,
 		       enum kernel_read_file_id read_id)
 {
 	enum ima_hooks func;
-- 
2.34.1