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Date: Fri, 03 Oct 2014 14:40:20 +0300 From: Dmitry Kasatkin <d.kasatkin@...sung.com> To: zohar@...ux.vnet.ibm.com, linux-ima-devel@...ts.sourceforge.net, linux-security-module@...r.kernel.org Cc: linux-kernel@...r.kernel.org, dmitry.kasatkin@...il.com, Dmitry Kasatkin <d.kasatkin@...sung.com> Subject: [PATCH v2 3/4] ima: ignore empty and with whitespaces policy lines 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.kasatkin@...sung.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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