Simplify global error call.

git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@622 36d66b0a-2a48-0410-832c-cd162a569da5

lib/internal.h

@@ -23,13 +23,6 @@
 #define DEFAULT_DISK_ALIGNMENT	1048576 /* 1MiB */
 #define DEFAULT_MEM_ALIGNMENT	4096
 
-/* private struct crypt_options flags */
-
-#define	CRYPT_FLAG_FREE_DEVICE	(1 << 24)
-#define	CRYPT_FLAG_FREE_CIPHER	(1 << 25)
-
-#define CRYPT_FLAG_PRIVATE_MASK ((unsigned int)-1 << 24)
-
 #define at_least(a, b) ({ __typeof__(a) __at_least = (a); (__at_least >= (b))?__at_least:(b); })
 
 struct crypt_device;
@@ -45,10 +38,6 @@ void crypt_free_volume_key(struct volume_key *vk);
 
 int crypt_confirm(struct crypt_device *cd, const char *msg);
 
-void set_error_va(const char *fmt, va_list va);
-void set_error(const char *fmt, ...);
-const char *get_error(void);
-
 char *crypt_lookup_dev(const char *dev_id);
 int crypt_sysfs_check_crypt_segment(const char *device, uint64_t offset, uint64_t size);
 int crypt_sysfs_get_rotational(int major, int minor, int *rotational);
@@ -73,9 +62,7 @@ void logger(struct crypt_device *cd, int class, const char *file, int line, cons
 #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)
 #define log_verbose(c, x...) logger(c, CRYPT_LOG_VERBOSE, __FILE__, __LINE__, x)
-#define log_err(c, x...) do { \
-	logger(c, CRYPT_LOG_ERROR, __FILE__, __LINE__, x); \
-	set_error(x); } while(0)
+#define log_err(c, x...) logger(c, CRYPT_LOG_ERROR, __FILE__, __LINE__, x)
 
 int crypt_get_debug_level(void);
 void debug_processes_using_device(const char *name);

lib/libdevmapper.c

@@ -420,7 +420,6 @@ int dm_create_device(const char *name,
 	struct dm_task *dmt = NULL;
 	struct dm_info dmi;
 	char *params = NULL;
-	char *error = NULL;
 	char dev_uuid[DM_UUID_LEN] = {0};
 	int r = -EINVAL;
 	uint32_t read_ahead = 0;
@@ -497,18 +496,9 @@ out:
 		cookie = 0;
 	}
 
-	if (r < 0 && !reload) {
-		if (get_error())
-			error = strdup(get_error());
-
+	if (r < 0 && !reload)
 		dm_remove_device(name, 0, 0);
 
-		if (error) {
-			set_error(error);
-			free(error);
-		}
-	}
-
 out_no_removal:
 	if (cookie && _dm_use_udev())
 		(void)_dm_udev_wait(cookie);

lib/luks1/keymanage.c

@@ -220,7 +220,7 @@ int LUKS_hdr_restore(
 	buffer_size = hdr_file.payloadOffset << SECTOR_SHIFT;
 
 	if (r || buffer_size < LUKS_ALIGN_KEYSLOTS) {
-		log_err(ctx, _("Backup file do not contain valid LUKS header.\n"));
+		log_err(ctx, _("Backup file doesn't contain valid LUKS header.\n"));
 		r = -EINVAL;
 		goto out;
 	}
@@ -288,7 +288,7 @@ int LUKS_hdr_restore(
 	close(devfd);
 
 	/* Be sure to reload new data */
-	r = LUKS_read_phdr(device, hdr, 0, ctx);
+	r = LUKS_read_phdr(device, hdr, 1, ctx);
 out:
 	if (devfd != -1)
 		close(devfd);
@@ -309,8 +309,6 @@ static int _check_and_convert_hdr(const char *device,
 		log_dbg("LUKS header not detected.");
 		if (require_luks_device)
 			log_err(ctx, _("Device %s is not a valid LUKS device.\n"), device);
-		else
-			set_error(_("Device %s is not a valid LUKS device."), device);
 		r = -EINVAL;
 	} else if((hdr->version = ntohs(hdr->version)) != 1) {	/* Convert every uint16/32_t item from network byte order */
 		log_err(ctx, _("Unsupported LUKS version %d.\n"), hdr->version);
@@ -689,8 +687,7 @@ int LUKS_set_key(const char *device, unsigned int keyIndex,
 				    hdr->keyblock[keyIndex].keyMaterialOffset,
 				    ctx);
 	if (r < 0) {
-		if(!get_error())
-			log_err(ctx, _("Failed to write to key storage.\n"));
+		log_err(ctx, _("Failed to write to key storage.\n"));
 		goto out;
 	}
 

lib/setup.c

@@ -73,6 +73,10 @@ struct crypt_device {
 	void *password_usrptr;
 };
 
+/* Global error */
+/* FIXME: not thread safe, remove this later */
+static char global_error[512] = {0};
+
 /* Log helper */
 static void (*_default_log)(int level, const char *msg, void *usrptr) = NULL;
 static int _debug_level = 0;
@@ -87,6 +91,7 @@ int crypt_get_debug_level(void)
 	return _debug_level;
 }
 
+
 void crypt_log(struct crypt_device *cd, int level, const char *msg)
 {
 	if (cd && cd->log)
@@ -95,6 +100,16 @@ void crypt_log(struct crypt_device *cd, int level, const char *msg)
 		_default_log(level, msg, NULL);
 }
 
+/* Set global error, ugly hack... */
+void set_global_error(const char *error)
+{
+	size_t size = strlen(error);
+
+	strncpy(global_error, error, sizeof(global_error) - 2);
+	if (size < sizeof(global_error) && global_error[size - 1] == '\n')
+		global_error[size - 1] = '\0';
+}
+
 __attribute__((format(printf, 5, 6)))
 void logger(struct crypt_device *cd, int level, const char *file,
 	    int line, const char *format, ...)
@@ -104,7 +119,7 @@ void logger(struct crypt_device *cd, int level, const char *file,
 
 	va_start(argp, format);
 
-	if (vasprintf(&target, format, argp) > 0) {
+	if (vasprintf(&target, format, argp) > 0 ) {
 		if (level >= 0) {
 			crypt_log(cd, level, target);
 #ifdef CRYPT_DEBUG
@@ -114,6 +129,9 @@ void logger(struct crypt_device *cd, int level, const char *file,
 		} else if (_debug_level)
 			printf("# %s\n", target);
 #endif
+
+		if (level == CRYPT_LOG_ERROR)
+			set_global_error(target);
 	}
 
 	va_end(argp);
@@ -411,16 +429,15 @@ void crypt_set_password_callback(struct crypt_device *cd,
 	cd->password_usrptr = usrptr;
 }
 
+/* Deprecated global error interface */
 void crypt_get_error(char *buf, size_t size)
 {
-	const char *error = get_error();
-
 	if (!buf || size < 1)
-		set_error(NULL);
-	else if (error) {
-		strncpy(buf, error, size - 1);
+		global_error[0] = '\0';
+	else if (*global_error) {
+		strncpy(buf, global_error, size - 1);
 		buf[size - 1] = '\0';
-		set_error(NULL);
+		global_error[0] = '\0';
 	} else
 		buf[0] = '\0';
 }

lib/utils.c

@@ -38,46 +38,6 @@
 #include "libcryptsetup.h"
 #include "internal.h"
 
-static char *error=NULL;
-
-__attribute__((format(printf, 1, 0)))
-void set_error_va(const char *fmt, va_list va)
-{
-	int r;
-
-	if(error) {
-		free(error);
-		error = NULL;
-	}
-
-	if(!fmt) return;
-
-	r = vasprintf(&error, fmt, va);
-	if (r < 0) {
-		free(error);
-		error = NULL;
-		return;
-	}
-
-	if (r && error[r - 1] == '\n')
-		error[r - 1] = '\0';
-}
-
-__attribute__((format(printf, 1, 2)))
-void set_error(const char *fmt, ...)
-{
-	va_list va;
-
-	va_start(va, fmt);
-	set_error_va(fmt, va);
-	va_end(va);
-}
-
-const char *get_error(void)
-{
-	return error;
-}
-
 static int get_alignment(int fd)
 {
 	int alignment = DEFAULT_MEM_ALIGNMENT;