[PATCH] apparmor: Use sysfs_emit in param_get_{audit,mode}

[Thorsten Blum]

Replace sprintf() with sysfs_emit() in param_get_audit() and
param_get_mode(). sysfs_emit() is preferred for formatting sysfs output
because it provides safer bounds checking.  Add terminating newlines as
suggested by checkpatch.

Signed-off-by: Thorsten Blum <thorsten.blum at linux.dev>
---
 security/apparmor/lsm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index a87cd60ed206..1250192f7b12 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -17,6 +17,7 @@
 #include <linux/ptrace.h>
 #include <linux/ctype.h>
 #include <linux/sysctl.h>
+#include <linux/sysfs.h>
 #include <linux/audit.h>
 #include <linux/user_namespace.h>
 #include <linux/netfilter_ipv4.h>
@@ -2081,7 +2082,7 @@ static int param_get_audit(char *buffer, const struct kernel_param *kp)
 		return -EINVAL;
 	if (apparmor_initialized && !aa_current_policy_view_capable(NULL))
 		return -EPERM;
-	return sprintf(buffer, "%s", audit_mode_names[aa_g_audit]);
+	return sysfs_emit(buffer, "%s\n", audit_mode_names[aa_g_audit]);
 }
 
 static int param_set_audit(const char *val, const struct kernel_param *kp)
@@ -2109,8 +2110,7 @@ static int param_get_mode(char *buffer, const struct kernel_param *kp)
 		return -EINVAL;
 	if (apparmor_initialized && !aa_current_policy_view_capable(NULL))
 		return -EPERM;
-
-	return sprintf(buffer, "%s", aa_profile_mode_names[aa_g_profile_mode]);
+	return sysfs_emit(buffer, "%s\n", aa_profile_mode_names[aa_g_profile_mode]);
 }
 
 static int param_set_mode(const char *val, const struct kernel_param *kp)
-- 
Thorsten Blum <thorsten.blum at linux.dev>
GPG: 1D60 735E 8AEF 3BE4 73B6  9D84 7336 78FD 8DFE EAD4