TOMOYO: Small cleanup.

Split tomoyo_write_profile() into several functions. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
author: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> 2010-06-24 20:30:09 -0400
committer: James Morris <jmorris@namei.org> 2010-08-02 01:34:54 -0400
commit: 8e5686874bcb882f69d5c04e6b38dc92b97facea (patch)
tree: 522733e1e4a172d29252a98d340cea3942296684 /security
parent: f23571e866309a2048030ef6a5f0725cf139d4c9 (diff)
1 files changed, 121 insertions, 74 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index 7cb6c0459d96..30e4b08905e3 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -302,6 +302,124 @@ struct tomoyo_profile *tomoyo_profile(const u8 profile)
        return ptr;
 }
+static s8 tomoyo_find_yesno(const char *string, const char *find)
+{
+        const char *cp = strstr(string, find);
+        if (cp) {
+                cp += strlen(find);
+                if (!strncmp(cp, "=yes", 4))
+                        return 1;
+                else if (!strncmp(cp, "=no", 3))
+                        return 0;
+        }
+        return -1;
+}
+static void tomoyo_set_bool(bool *b, const char *string, const char *find)
+{
+        switch (tomoyo_find_yesno(string, find)) {
+        case 1:
+                *b = true;
+                break;
+        case 0:
+                *b = false;
+                break;
+        }
+}
+static void tomoyo_set_uint(unsigned int *i, const char *string,
+                            const char *find)
+{
+        const char *cp = strstr(string, find);
+        if (cp)
+                sscanf(cp + strlen(find), "=%u", i);
+}
+static void tomoyo_set_pref(const char *name, const char *value,
+                            const bool use_default,
+                            struct tomoyo_profile *profile)
+{
+        struct tomoyo_preference **pref;
+        bool *verbose;
+        if (!strcmp(name, "enforcing")) {
+                if (use_default) {
+                        pref = &profile->enforcing;
+                        goto set_default;
+                }
+                profile->enforcing = &profile->preference;
+                verbose = &profile->preference.enforcing_verbose;
+                goto set_verbose;
+        }
+        if (!strcmp(name, "permissive")) {
+                if (use_default) {
+                        pref = &profile->permissive;
+                        goto set_default;
+                }
+                profile->permissive = &profile->preference;
+                verbose = &profile->preference.permissive_verbose;
+                goto set_verbose;
+        }
+        if (!strcmp(name, "learning")) {
+                if (use_default) {
+                        pref = &profile->learning;
+                        goto set_default;
+                }
+                profile->learning = &profile->preference;
+                tomoyo_set_uint(&profile->preference.learning_max_entry, value,
+                             "max_entry");
+                verbose = &profile->preference.learning_verbose;
+                goto set_verbose;
+        }
+        return;
+ set_default:
+        *pref = &tomoyo_default_profile.preference;
+        return;
+ set_verbose:
+        tomoyo_set_bool(verbose, value, "verbose");
+}
+static int tomoyo_set_mode(char *name, const char *value,
+                           const bool use_default,
+                           struct tomoyo_profile *profile)
+{
+        u8 i;
+        u8 config;
+        if (!strcmp(name, "CONFIG")) {
+                i = TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX;
+                config = profile->default_config;
+        } else if (tomoyo_str_starts(&name, "CONFIG::")) {
+                config = 0;
+                for (i = 0; i < TOMOYO_MAX_MAC_INDEX
+                             + TOMOYO_MAX_MAC_CATEGORY_INDEX; i++) {
+                        if (strcmp(name, tomoyo_mac_keywords[i]))
+                                continue;
+                        config = profile->config[i];
+                        break;
+                }
+                if (i == TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX)
+                        return -EINVAL;
+        } else {
+                return -EINVAL;
+        }
+        if (use_default) {
+                config = TOMOYO_CONFIG_USE_DEFAULT;
+        } else {
+                u8 mode;
+                for (mode = 0; mode < 4; mode++)
+                        if (strstr(value, tomoyo_mode[mode]))
+                                /*
+                                 * Update lower 3 bits in order to distinguish
+                                 * 'config' from 'TOMOYO_CONFIG_USE_DEAFULT'.
+                                 */
+                                config = (config & ~7) | mode;
+        }
+        if (i < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX)
+                profile->config[i] = config;
+        else if (config != TOMOYO_CONFIG_USE_DEFAULT)
+                profile->default_config = config;
+        return 0;
+}
 /**
 * tomoyo_write_profile - Write profile table.
 *
@@ -313,9 +431,6 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
 {
        char *data = head->write_buf;
        unsigned int i;
-        int value;
-        int mode;
-        u8 config;
        bool use_default = false;
        char *cp;
        struct tomoyo_profile *profile;
@@ -338,45 +453,8 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
        *cp++ = '\0';
        if (profile != &tomoyo_default_profile)
                use_default = strstr(cp, "use_default") != NULL;
-        if (strstr(cp, "verbose=yes"))
+        if (tomoyo_str_starts(&data, "PREFERENCE::")) {
-                value = 1;
+                tomoyo_set_pref(data, cp, use_default, profile);
-        else if (strstr(cp, "verbose=no"))
-                value = 0;
-        else
-                value = -1;
-        if (!strcmp(data, "PREFERENCE::enforcing")) {
-                if (use_default) {
-                        profile->enforcing = &tomoyo_default_profile.preference;
-                        return 0;
-                }
-                profile->enforcing = &profile->preference;
-                if (value >= 0)
-                        profile->preference.enforcing_verbose = value;
-                return 0;
-        }
-        if (!strcmp(data, "PREFERENCE::permissive")) {
-                if (use_default) {
-                        profile->permissive = &tomoyo_default_profile.preference;
-                        return 0;
-                }
-                profile->permissive = &profile->preference;
-                if (value >= 0)
-                        profile->preference.permissive_verbose = value;
-                return 0;
-        }
-        if (!strcmp(data, "PREFERENCE::learning")) {
-                char *cp2;
-                if (use_default) {
-                        profile->learning = &tomoyo_default_profile.preference;
-                        return 0;
-                }
-                profile->learning = &profile->preference;
-                if (value >= 0)
-                        profile->preference.learning_verbose = value;
-                cp2 = strstr(cp, "max_entry=");
-                if (cp2)
-                        sscanf(cp2 + 10, "%u",
-                               &profile->preference.learning_max_entry);
                return 0;
        }
        if (profile == &tomoyo_default_profile)
@@ -387,38 +465,7 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
                tomoyo_put_name(old_comment);
                return 0;
        }
-        if (!strcmp(data, "CONFIG")) {
+        return tomoyo_set_mode(data, cp, use_default, profile);
-                i = TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX;
-                config = profile->default_config;
-        } else if (tomoyo_str_starts(&data, "CONFIG::")) {
-                config = 0;
-                for (i = 0; i < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX; i++) {
-                        if (strcmp(data, tomoyo_mac_keywords[i]))
-                                continue;
-                        config = profile->config[i];
-                        break;
-                }
-                if (i == TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX)
-                        return -EINVAL;
-        } else {
-                return -EINVAL;
-        }
-        if (use_default) {
-                config = TOMOYO_CONFIG_USE_DEFAULT;
-        } else {
-                for (mode = 3; mode >= 0; mode--)
-                        if (strstr(cp, tomoyo_mode[mode]))
-                                /*
-                                 * Update lower 3 bits in order to distinguish
-                                 * 'config' from 'TOMOYO_CONFIG_USE_DEAFULT'.
-                                 */
-                                config = (config & ~7) | mode;
-        }
-        if (i < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX)
-                profile->config[i] = config;
-        else if (config != TOMOYO_CONFIG_USE_DEFAULT)
-                profile->default_config = config;
-        return 0;
 }
 static void tomoyo_print_preference(struct tomoyo_io_buffer *head,
author	Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>	2010-06-24 20:30:09 -0400
committer	James Morris <jmorris@namei.org>	2010-08-02 01:34:54 -0400
commit	8e5686874bcb882f69d5c04e6b38dc92b97facea (patch)
tree	522733e1e4a172d29252a98d340cea3942296684 /security
parent	f23571e866309a2048030ef6a5f0725cf139d4c9 (diff)

diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index 7cb6c0459d96..30e4b08905e3 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c
@@ -302,6 +302,124 @@ struct tomoyo_profile *tomoyo_profile(const u8 profile)
302	return ptr;	302	return ptr;
303	}	303	}
304		304
		305	static s8 tomoyo_find_yesno(const char string, const char find)
		306	{
		307	const char *cp = strstr(string, find);
		308	if (cp) {
		309	cp += strlen(find);
		310	if (!strncmp(cp, "=yes", 4))
		311	return 1;
		312	else if (!strncmp(cp, "=no", 3))
		313	return 0;
		314	}
		315	return -1;
		316	}
		317
		318	static void tomoyo_set_bool(bool b, const char string, const char *find)
		319	{
		320	switch (tomoyo_find_yesno(string, find)) {
		321	case 1:
		322	*b = true;
		323	break;
		324	case 0:
		325	*b = false;
		326	break;
		327	}
		328	}
		329
		330	static void tomoyo_set_uint(unsigned int i, const char string,
		331	const char *find)
		332	{
		333	const char *cp = strstr(string, find);
		334	if (cp)
		335	sscanf(cp + strlen(find), "=%u", i);
		336	}
		337
		338	static void tomoyo_set_pref(const char name, const char value,
		339	const bool use_default,
		340	struct tomoyo_profile *profile)
		341	{
		342	struct tomoyo_preference **pref;
		343	bool *verbose;
		344	if (!strcmp(name, "enforcing")) {
		345	if (use_default) {
		346	pref = &profile->enforcing;
		347	goto set_default;
		348	}
		349	profile->enforcing = &profile->preference;
		350	verbose = &profile->preference.enforcing_verbose;
		351	goto set_verbose;
		352	}
		353	if (!strcmp(name, "permissive")) {
		354	if (use_default) {
		355	pref = &profile->permissive;
		356	goto set_default;
		357	}
		358	profile->permissive = &profile->preference;
		359	verbose = &profile->preference.permissive_verbose;
		360	goto set_verbose;
		361	}
		362	if (!strcmp(name, "learning")) {
		363	if (use_default) {
		364	pref = &profile->learning;
		365	goto set_default;
		366	}
		367	profile->learning = &profile->preference;
		368	tomoyo_set_uint(&profile->preference.learning_max_entry, value,
		369	"max_entry");
		370	verbose = &profile->preference.learning_verbose;
		371	goto set_verbose;
		372	}
		373	return;
		374	set_default:
		375	*pref = &tomoyo_default_profile.preference;
		376	return;
		377	set_verbose:
		378	tomoyo_set_bool(verbose, value, "verbose");
		379	}
		380
		381	static int tomoyo_set_mode(char name, const char value,
		382	const bool use_default,
		383	struct tomoyo_profile *profile)
		384	{
		385	u8 i;
		386	u8 config;
		387	if (!strcmp(name, "CONFIG")) {
		388	i = TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX;
		389	config = profile->default_config;
		390	} else if (tomoyo_str_starts(&name, "CONFIG::")) {
		391	config = 0;
		392	for (i = 0; i < TOMOYO_MAX_MAC_INDEX
		393	+ TOMOYO_MAX_MAC_CATEGORY_INDEX; i++) {
		394	if (strcmp(name, tomoyo_mac_keywords[i]))
		395	continue;
		396	config = profile->config[i];
		397	break;
		398	}
		399	if (i == TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX)
		400	return -EINVAL;
		401	} else {
		402	return -EINVAL;
		403	}
		404	if (use_default) {
		405	config = TOMOYO_CONFIG_USE_DEFAULT;
		406	} else {
		407	u8 mode;
		408	for (mode = 0; mode < 4; mode++)
		409	if (strstr(value, tomoyo_mode[mode]))
		410	/*
		411	* Update lower 3 bits in order to distinguish
		412	* 'config' from 'TOMOYO_CONFIG_USE_DEAFULT'.
		413	*/
		414	config = (config & ~7) \| mode;
		415	}
		416	if (i < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX)
		417	profile->config[i] = config;
		418	else if (config != TOMOYO_CONFIG_USE_DEFAULT)
		419	profile->default_config = config;
		420	return 0;
		421	}
		422
305	/**	423	/**
306	* tomoyo_write_profile - Write profile table.	424	* tomoyo_write_profile - Write profile table.
307	*	425	*
@@ -313,9 +431,6 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
313	{	431	{
314	char *data = head->write_buf;	432	char *data = head->write_buf;
315	unsigned int i;	433	unsigned int i;
316	int value;
317	int mode;
318	u8 config;
319	bool use_default = false;	434	bool use_default = false;
320	char *cp;	435	char *cp;
321	struct tomoyo_profile *profile;	436	struct tomoyo_profile *profile;
@@ -338,45 +453,8 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
338	*cp++ = '\0';	453	*cp++ = '\0';
339	if (profile != &tomoyo_default_profile)	454	if (profile != &tomoyo_default_profile)
340	use_default = strstr(cp, "use_default") != NULL;	455	use_default = strstr(cp, "use_default") != NULL;
341	if (strstr(cp, "verbose=yes"))	456	if (tomoyo_str_starts(&data, "PREFERENCE::")) {
342	value = 1;	457	tomoyo_set_pref(data, cp, use_default, profile);
343	else if (strstr(cp, "verbose=no"))
344	value = 0;
345	else
346	value = -1;
347	if (!strcmp(data, "PREFERENCE::enforcing")) {
348	if (use_default) {
349	profile->enforcing = &tomoyo_default_profile.preference;
350	return 0;
351	}
352	profile->enforcing = &profile->preference;
353	if (value >= 0)
354	profile->preference.enforcing_verbose = value;
355	return 0;
356	}
357	if (!strcmp(data, "PREFERENCE::permissive")) {
358	if (use_default) {
359	profile->permissive = &tomoyo_default_profile.preference;
360	return 0;
361	}
362	profile->permissive = &profile->preference;
363	if (value >= 0)
364	profile->preference.permissive_verbose = value;
365	return 0;
366	}
367	if (!strcmp(data, "PREFERENCE::learning")) {
368	char *cp2;
369	if (use_default) {
370	profile->learning = &tomoyo_default_profile.preference;
371	return 0;
372	}
373	profile->learning = &profile->preference;
374	if (value >= 0)
375	profile->preference.learning_verbose = value;
376	cp2 = strstr(cp, "max_entry=");
377	if (cp2)
378	sscanf(cp2 + 10, "%u",
379	&profile->preference.learning_max_entry);
380	return 0;	458	return 0;
381	}	459	}
382	if (profile == &tomoyo_default_profile)	460	if (profile == &tomoyo_default_profile)
@@ -387,38 +465,7 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
387	tomoyo_put_name(old_comment);	465	tomoyo_put_name(old_comment);
388	return 0;	466	return 0;
389	}	467	}
390	if (!strcmp(data, "CONFIG")) {	468	return tomoyo_set_mode(data, cp, use_default, profile);
391	i = TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX;
392	config = profile->default_config;
393	} else if (tomoyo_str_starts(&data, "CONFIG::")) {
394	config = 0;
395	for (i = 0; i < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX; i++) {
396	if (strcmp(data, tomoyo_mac_keywords[i]))
397	continue;
398	config = profile->config[i];
399	break;
400	}
401	if (i == TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX)
402	return -EINVAL;
403	} else {
404	return -EINVAL;
405	}
406	if (use_default) {
407	config = TOMOYO_CONFIG_USE_DEFAULT;
408	} else {
409	for (mode = 3; mode >= 0; mode--)
410	if (strstr(cp, tomoyo_mode[mode]))
411	/*
412	* Update lower 3 bits in order to distinguish
413	* 'config' from 'TOMOYO_CONFIG_USE_DEAFULT'.
414	*/
415	config = (config & ~7) \| mode;
416	}
417	if (i < TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX)
418	profile->config[i] = config;
419	else if (config != TOMOYO_CONFIG_USE_DEFAULT)
420	profile->default_config = config;
421	return 0;
422	}	469	}
423		470
424	static void tomoyo_print_preference(struct tomoyo_io_buffer *head,	471	static void tomoyo_print_preference(struct tomoyo_io_buffer *head,