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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.

Changes in v2:
* strip leading blanks and tabs in rules to prevent parsing failures

Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
This commit is contained in:
Dmitry Kasatkin 2014-10-03 14:40:20 +03:00 committed by Mimi Zohar
parent 272a6e90ff
commit 7178784f0a
1 changed files with 2 additions and 1 deletions
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3
security/integrity/ima/ima_policy.c
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@ -696,8 +696,9 @@ ssize_t ima_parse_add_rule(char *rule)
p = strsep(&rule, "\n"); p = strsep(&rule, "\n");
len = strlen(p) + 1; len = strlen(p) + 1;
p += strspn(p, " \t");
if (*p == '#') if (*p == '#' || *p == '\0')
return len; return len;
entry = kzalloc(sizeof(*entry), GFP_KERNEL); entry = kzalloc(sizeof(*entry), GFP_KERNEL);