diff mbox series

[11/14] integrity/ima: switch to using __kernel_read

Message ID 20200513065656.2110441-12-hch@lst.de (mailing list archive)
State New, archived
Headers show
Series [01/14] cachefiles: switch to kernel_write | expand

Commit Message

Christoph Hellwig May 13, 2020, 6:56 a.m. UTC 
__kernel_read has a bunch of additional sanity checks, and this moves
the set_fs out of non-core code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 security/integrity/iint.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)
diff mbox series

Patch

diff --git a/security/integrity/iint.c b/security/integrity/iint.c
index e12c4900510f6..1d20003243c3f 100644
--- a/security/integrity/iint.c
+++ b/security/integrity/iint.c
@@ -188,19 +188,7 @@  DEFINE_LSM(integrity) = {
 int integrity_kernel_read(struct file *file, loff_t offset,
 			  void *addr, unsigned long count)
 {
-	mm_segment_t old_fs;
-	char __user *buf = (char __user *)addr;
-	ssize_t ret;
-
-	if (!(file->f_mode & FMODE_READ))
-		return -EBADF;
-
-	old_fs = get_fs();
-	set_fs(KERNEL_DS);
-	ret = __vfs_read(file, buf, count, &offset);
-	set_fs(old_fs);
-
-	return ret;
+	return __kernel_read(file, addr, count, &offset);
 }
 
 /*