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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2011-06-26 16:16:36 +0200
committerJames Morris <jmorris@namei.org>2011-06-29 01:31:19 +0200
commit0df7e8b8f1c25c10820bdc679555f2fbfb897ca0 (patch)
tree626a0304fceec0bbee93e43a24bc0f813fe230b7 /security/tomoyo/util.c
parentTOMOYO: Cleanup part 2. (diff)
downloadlinux-0df7e8b8f1c25c10820bdc679555f2fbfb897ca0.tar.xz
linux-0df7e8b8f1c25c10820bdc679555f2fbfb897ca0.zip
TOMOYO: Cleanup part 3.
Use common structure for ACL with "struct list_head" + "atomic_t". Use array/struct where possible. Remove is_group from "struct tomoyo_name_union"/"struct tomoyo_number_union". Pass "struct file"->private_data rather than "struct file". Update some of comments. Bring tomoyo_same_acl_head() from common.h to domain.c . Bring tomoyo_invalid()/tomoyo_valid() from common.h to util.c . Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to '')
-rw-r--r--security/tomoyo/util.c37
1 files changed, 29 insertions, 8 deletions
diff --git a/security/tomoyo/util.c b/security/tomoyo/util.c
index 7fb9bbf7021a..abb177c2d7c2 100644
--- a/security/tomoyo/util.c
+++ b/security/tomoyo/util.c
@@ -21,7 +21,7 @@ bool tomoyo_policy_loaded;
* @result: Pointer to "unsigned long".
* @str: Pointer to string to parse.
*
- * Returns value type on success, 0 otherwise.
+ * Returns one of values in "enum tomoyo_value_type".
*
* The @src is updated to point the first character after the value
* on success.
@@ -43,7 +43,7 @@ static u8 tomoyo_parse_ulong(unsigned long *result, char **str)
}
*result = simple_strtoul(cp, &ep, base);
if (cp == ep)
- return 0;
+ return TOMOYO_VALUE_TYPE_INVALID;
*str = ep;
switch (base) {
case 16:
@@ -93,11 +93,9 @@ bool tomoyo_parse_name_union(const char *filename,
return false;
if (filename[0] == '@') {
ptr->group = tomoyo_get_group(filename + 1, TOMOYO_PATH_GROUP);
- ptr->is_group = true;
return ptr->group != NULL;
}
ptr->filename = tomoyo_get_name(filename);
- ptr->is_group = false;
return ptr->filename != NULL;
}
@@ -118,17 +116,16 @@ bool tomoyo_parse_number_union(char *data, struct tomoyo_number_union *num)
if (!tomoyo_correct_word(data))
return false;
num->group = tomoyo_get_group(data + 1, TOMOYO_NUMBER_GROUP);
- num->is_group = true;
return num->group != NULL;
}
type = tomoyo_parse_ulong(&v, &data);
if (!type)
return false;
num->values[0] = v;
- num->min_type = type;
+ num->value_type[0] = type;
if (!*data) {
num->values[1] = v;
- num->max_type = type;
+ num->value_type[1] = type;
return true;
}
if (*data++ != '-')
@@ -137,7 +134,7 @@ bool tomoyo_parse_number_union(char *data, struct tomoyo_number_union *num)
if (!type || *data)
return false;
num->values[1] = v;
- num->max_type = type;
+ num->value_type[1] = type;
return true;
}
@@ -185,6 +182,30 @@ static inline u8 tomoyo_make_byte(const u8 c1, const u8 c2, const u8 c3)
}
/**
+ * tomoyo_valid - Check whether the character is a valid char.
+ *
+ * @c: The character to check.
+ *
+ * Returns true if @c is a valid character, false otherwise.
+ */
+static inline bool tomoyo_valid(const unsigned char c)
+{
+ return c > ' ' && c < 127;
+}
+
+/**
+ * tomoyo_invalid - Check whether the character is an invalid char.
+ *
+ * @c: The character to check.
+ *
+ * Returns true if @c is an invalid character, false otherwise.
+ */
+static inline bool tomoyo_invalid(const unsigned char c)
+{
+ return c && (c <= ' ' || c >= 127);
+}
+
+/**
* tomoyo_str_starts - Check whether the given string starts with the given keyword.
*
* @src: Pointer to pointer to the string.