Properly apply versioned symbols in library and fix problems uncovered

by doing that:-)

git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@124 36d66b0a-2a48-0410-832c-cd162a569da5

ChangeLog

@@ -1,3 +1,9 @@
+2009-09-30  Milan Broz  <mbroz@redhat.com>
+	* Fix exported symbols and versions in libcryptsetup.
+	* Do not use internal lib functions in cryptsetup.
+	* Add crypt_log to library.
+	* Fix crypt_remove_device (remove, luksClose) implementation.
+
 2009-09-28  Milan Broz  <mbroz@redhat.com>
 	* Add luksHeaderBackup and luksHeaderRestore commands.
 	* Fail passphrase read if piped input no longer exists.

lib/Makefile.am

@@ -25,7 +25,7 @@ libcryptsetup_la_DEPENDENCIES = libcryptsetup.sym
 
 libcryptsetup_la_LDFLAGS = \
 	$(_STATIC_LIBRARY) \
-	--version-script=libcryptsetup.sym \
+	-Wl,--version-script=libcryptsetup.sym \
 	-version-info 1:0:0
 
 libcryptsetup_la_CFLAGS = -Wall

lib/internal.h

@@ -109,7 +109,6 @@ void get_key(char *prompt, char **key, unsigned int *passLen, int key_size,
 
 int parse_into_name_and_mode(const char *nameAndMode, char *name, char *mode);
 
-void set_default_log(void (*log)(int class, char *msg));
 void logger(struct crypt_device *cd, int class, const char *file, int line, const char *format, ...);
 #define log_dbg(x...) logger(NULL, CRYPT_LOG_DEBUG, __FILE__, __LINE__, x)
 #define log_std(c, x...) logger(c, CRYPT_LOG_NORMAL, __FILE__, __LINE__, x)

lib/libcryptsetup.h

@@ -35,7 +35,7 @@ int crypt_init_by_name(struct crypt_device **cd, const char *name);
 /**
  * Set log function.
  *
- * @cd - crypt device handle
+ * @cd - crypt device handle (can be NULL to set default log function)
  * @usrptr - provided identification in callback
  * @class  - log type below (debug messages can uses other levels)
  * @msg    - log message
@@ -47,6 +47,15 @@ void crypt_set_log_callback(struct crypt_device *cd,
 	void (*log)(int class, const char *msg, void *usrptr),
 	void *usrptr);
 
+/**
+ * Log message through log function.
+ *
+ * @cd - crypt device handle
+ * @class  - log type
+ * @msg    - log message
+ */
+void crypt_log(struct crypt_device *cd, int class, const char *msg);
+
 /**
  * Set confirmation callback (yes/no)
  *

lib/libcryptsetup.sym

@@ -40,6 +40,7 @@ CRYPTSETUP_1.0 {
 		crypt_get_error;
 		crypt_get_dir;
 		crypt_set_debug_level;
+		crypt_log;
 
 		crypt_header_backup;
 		crypt_header_restore;

lib/setup.c

@@ -39,7 +39,7 @@ struct crypt_device {
 };
 
 /* Log helper */
-static void (*_default_log)(int class, char *msg) = NULL;
+static void (*_default_log)(int class, const char *msg, void *usrptr) = NULL;
 static int _debug_level = 0;
 
 void crypt_set_debug_level(int level)
@@ -47,9 +47,12 @@ void crypt_set_debug_level(int level)
 	_debug_level = level;
 }
 
-void set_default_log(void (*log)(int class, char *msg))
+void crypt_log(struct crypt_device *cd, int class, const char *msg)
 {
-	_default_log = log;
+	if (cd && cd->log)
+		cd->log(class, msg, cd->log_usrptr);
+	else if (_default_log)
+		_default_log(class, msg, NULL);
 }
 
 void logger(struct crypt_device *cd, int class, const char *file,
@@ -62,10 +65,7 @@ void logger(struct crypt_device *cd, int class, const char *file,
 
 	if (vasprintf(&target, format, argp) > 0) {
 		if (class >= 0) {
-			if (cd && cd->log)
-				cd->log(class, target, cd->log_usrptr);
-			else if (_default_log)
-				_default_log(class, target);
+			crypt_log(cd, class, target);
 #ifdef CRYPT_DEBUG
 		} else if (_debug_level)
 			printf("# %s:%d %s\n", file ?: "?", line, target);
@@ -552,9 +552,13 @@ void crypt_set_log_callback(struct crypt_device *cd,
 	void (*log)(int class, const char *msg, void *usrptr),
 	void *usrptr)
 {
+	if (!cd)
+		_default_log = log;
+	else {
 		cd->log = log;
 		cd->log_usrptr = usrptr;
 	}
+}
 
 void crypt_set_confirm_callback(struct crypt_device *cd,
 	int (*confirm)(const char *msg, void *usrptr),
@@ -703,7 +707,18 @@ int crypt_query_device(struct crypt_options *options)
 /* OPTIONS: name, icb */
 int crypt_remove_device(struct crypt_options *options)
 {
-	return crypt_deactivate(NULL, options->name);
+	struct crypt_device *cd = NULL;
+	int r;
+
+	r = crypt_init_by_name(&cd, options->name);
+	if (r)
+		return r;
+
+	r = crypt_deactivate(cd, options->name);
+
+	crypt_free(cd);
+	return r;
+
 }
 
 /* OPTIONS: device, cipher, hash, align_payload, key_size (master key), key_slot
@@ -981,12 +996,12 @@ int crypt_init_by_name(struct crypt_device **cd, const char *name)
 	ci = crypt_status(NULL, name);
 	if (ci < ACTIVE) {
 		log_err(NULL, _("Device %s is not active.\n"), name);
-		return -EINVAL;
+		return -ENODEV;
 	}
 
 	r = dm_query_device(name, &device, NULL, NULL, NULL,
 			    NULL, NULL, NULL, NULL, NULL, NULL);
-	if (!r)
+	if (r >= 0)
 		r = crypt_init(cd, device);
 
 	free(device);

src/cryptsetup.c

@@ -2,6 +2,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <stdarg.h>
 #include <inttypes.h>
 #include <errno.h>
 #include <unistd.h>
@@ -70,7 +71,7 @@ static struct action_type {
 	const char *desc;
 } action_types[] = {
 	{ "create",	action_create,		0, 2, 1, 1, 1, N_("<name> <device>"),N_("create device") },
-	{ "remove",	action_remove,		0, 1, 1, 0, 1, N_("<name>"), N_("remove device") },
+	{ "remove",	action_remove,		0, 1, 1, 1, 1, N_("<name>"), N_("remove device") },
 	{ "resize",	action_resize,		0, 1, 1, 1, 1, N_("<name>"), N_("resize active device") },
 	{ "status",	action_status,		0, 1, 1, 0, 1, N_("<name>"), N_("show device status") },
 	{ "luksFormat", action_luksFormat,	0, 1, 1, 1, 1, N_("<device> [<new key file>]"), N_("formats a LUKS device") },
@@ -80,7 +81,7 @@ static struct action_type {
 	{ "luksKillSlot",  action_luksKillSlot, 0, 2, 1, 1, 1, N_("<device> <key slot>"), N_("wipes key with number <key slot> from LUKS device") },
 	{ "luksUUID",	action_luksUUID,	0, 1, 0, 0, 1, N_("<device>"), N_("print UUID of LUKS device") },
 	{ "isLuks",	action_isLuks,		0, 1, 0, 0, 0, N_("<device>"), N_("tests <device> for LUKS partition header") },
-	{ "luksClose",	action_remove,		0, 1, 1, 0, 1, N_("<name>"), N_("remove LUKS mapping") },
+	{ "luksClose",	action_remove,		0, 1, 1, 1, 1, N_("<name>"), N_("remove LUKS mapping") },
 	{ "luksDump",	action_luksDump,	0, 1, 0, 0, 1, N_("<device>"), N_("dump LUKS partition information") },
 	{ "luksSuspend",action_luksSuspend,	0, 1, 1, 1, 1, N_("<device>"), N_("Suspend LUKS device and wipe key (all IOs are frozen).") },
 	{ "luksResume",	action_luksResume,	0, 1, 1, 1, 1, N_("<device>"), N_("Resume suspended LUKS device.") },
@@ -91,6 +92,30 @@ static struct action_type {
 	{ NULL, NULL, 0, 0, 0, 0, 0, NULL, NULL }
 };
 
+static void clogger(struct crypt_device *cd, int class, const char *file,
+		   int line, const char *format, ...)
+{
+	va_list argp;
+	char *target = NULL;
+
+	va_start(argp, format);
+
+	if (vasprintf(&target, format, argp) > 0) {
+		if (class >= 0) {
+			crypt_log(cd, class, target);
+#ifdef CRYPT_DEBUG
+		} else if (opt_debug)
+			printf("# %s:%d %s\n", file ?: "?", line, target);
+#else
+		} else if (opt_debug)
+			printf("# %s\n", target);
+#endif
+	}
+
+	va_end(argp);
+	free(target);
+}
+
 /* Interface Callbacks */
 static int yesDialog(char *msg)
 {
@@ -319,7 +344,9 @@ static int _action_luksFormat_useMK()
 		.data_alignment = opt_align_payload,
 	};
 
-	if (parse_into_name_and_mode(opt_cipher ?: DEFAULT_LUKS_CIPHER, cipher, cipher_mode)) {
+	if (sscanf(opt_cipher ?: DEFAULT_LUKS_CIPHER,
+		   "%" MAX_CIPHER_LEN_STR "[^-]-%" MAX_CIPHER_LEN_STR "s",
+		   cipher, cipher_mode) != 2) {
 		log_err("No known cipher specification pattern detected.\n");
 		return -EINVAL;
 	}
@@ -643,11 +670,6 @@ static int run_action(struct action_type *action)
 {
 	int r;
 
-	if (dm_init(NULL, action->required_dm_backend) < 1) {
-		log_err("Cannot communicate with device-mapper. Is dm_mod kernel module loaded?\n");
-		return -ENOSYS;
-	}
-
 	if (action->required_memlock)
 		crypt_memory_lock(NULL, 1);
 
@@ -656,9 +678,6 @@ static int run_action(struct action_type *action)
 	if (action->required_memlock)
 		crypt_memory_lock(NULL, 0);
 
-	if (action->required_dm_backend)
-		dm_exit();
-
 	if (r < 0 && (opt_verbose || action->show_status))
 		show_status(-r);
 
@@ -706,7 +725,7 @@ int main(int argc, char **argv)
 	int r;
 	const char *null_action_argv[] = {NULL};
 
-	set_default_log(cmdLineLog);
+	crypt_set_log_callback(NULL, _log, NULL);
 
 	setlocale(LC_ALL, "");
 	bindtextdomain(PACKAGE, LOCALEDIR);

src/cryptsetup.h

@@ -34,18 +34,10 @@
 #define DEFAULT_LUKS_KEY_SIZE	128
 
 #define MAX_CIPHER_LEN		32
+#define MAX_CIPHER_LEN_STR	"32"
 
-/* Helper funcions provided by internal libcryptsetup objects */
-void set_default_log(void (*log)(int class, char *msg));
-void logger(struct crypt_device *cd, int class, const char *file, int line, const char *format, ...);
-#define log_dbg(x...) logger(NULL, CRYPT_LOG_DEBUG, __FILE__, __LINE__, x)
-#define log_std(x...) logger(NULL, CRYPT_LOG_NORMAL, __FILE__, __LINE__, x)
-#define log_err(x...) logger(NULL, CRYPT_LOG_ERROR, __FILE__, __LINE__, x)
-
-extern int memlock_inc(struct crypt_device *ctx);
-extern int memlock_dec(struct crypt_device *ctx);
-extern int dm_init(struct crypt_device *context, int check_kernel);
-extern void dm_exit(void);
-extern int parse_into_name_and_mode(const char *nameAndMode, char *name, char *mode);
+#define log_dbg(x...) clogger(NULL, CRYPT_LOG_DEBUG, __FILE__, __LINE__, x)
+#define log_std(x...) clogger(NULL, CRYPT_LOG_NORMAL, __FILE__, __LINE__, x)
+#define log_err(x...) clogger(NULL, CRYPT_LOG_ERROR, __FILE__, __LINE__, x)
 
 #endif /* CRYPTSETUP_H */