Empty policy lines cause parsing failures which is, especially
for new users, hard to spot. This patch prevents it.
It is now possible to 'cat policy > <securityfs>/ima/policy'.
Changes in v2:
* strip leading blanks and tabs in rules to prevent parsing failures
Signed-off-by: Dmitry Kasatkin <d.kasat...@samsung.com>
---
security/integrity/ima/ima_policy.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/security/integrity/ima/ima_policy.c
b/security/integrity/ima/ima_policy.c
index bf232b9..d2c47d4 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -696,8 +696,9 @@ ssize_t ima_parse_add_rule(char *rule)
p = strsep(&rule, "\n");
len = strlen(p) + 1;
+ p += strspn(p, " \t");
- if (*p == '#')
+ if (*p == '#' || *p == '\0')
return len;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
--
1.9.1
--
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