예제 #1
0
파일: lvm_base.c 프로젝트: Distrotech/LVM2
static lvm_t _lvm_init(const char *system_dir)
{
	struct cmd_context *cmd;

	/* FIXME: logging bound to handle
	 */

	if (!udev_init_library_context())
		stack;

	/*
	 * It's not necessary to use name mangling for LVM:
	 *   - the character set used for VG-LV names is subset of udev character set
	 *   - when we check other devices (e.g. device_is_usable fn), we use major:minor, not dm names
	 */
	dm_set_name_mangling_mode(DM_STRING_MANGLING_NONE);

	/* create context */
	/* FIXME: split create_toolcontext */
	/* FIXME: make all globals configurable */
	cmd = create_toolcontext(0, system_dir, 0, 0, 1, 1);
	if (!cmd)
		return NULL;

	if (stored_errno())
		return (lvm_t) cmd;

	/*
	 * FIXME: if an non memory error occured, return the cmd (maybe some
	 * cleanup needed).
	 */

	/* initialization from lvm_run_command */
	init_error_message_produced(0);

	/* FIXME: locking_type config option needed? */
	/* initialize locking */
	if (!init_locking(-1, cmd, 0)) {
		/* FIXME: use EAGAIN as error code here */
		lvm_quit((lvm_t) cmd);
		return NULL;
	}
	/*
	 * FIXME: Use cmd->cmd_line as audit trail for liblvm calls.  Used in
	 * archive() call.  Possible example:
	 * cmd_line = "lvm_vg_create: vg1\nlvm_vg_extend vg1 /dev/sda1\n"
	 */
	cmd->cmd_line = "liblvm";

	/*
	 * Turn off writing to stdout/stderr.
	 * FIXME Fix lib/ to support a non-interactive mode instead.
	 */
	log_suppress(1);

	return (lvm_t) cmd;
}
예제 #2
0
lvm_t lvm_init(const char *system_dir)
{
    struct cmd_context *cmd;

    /* FIXME: logging bound to handle
     */

    if (!udev_init_library_context())
        stack;

    /* create context */
    /* FIXME: split create_toolcontext */
    /* FIXME: make all globals configurable */
    cmd = create_toolcontext(0, system_dir, 0, 0);
    if (!cmd)
        return NULL;

    if (stored_errno())
        return (lvm_t) cmd;

    /*
     * FIXME: if an non memory error occured, return the cmd (maybe some
     * cleanup needed).
     */

    /* initialization from lvm_run_command */
    init_error_message_produced(0);

    /* FIXME: locking_type config option needed? */
    /* initialize locking */
    if (!init_locking(-1, cmd, 0)) {
        /* FIXME: use EAGAIN as error code here */
        lvm_quit((lvm_t) cmd);
        return NULL;
    }
    /*
     * FIXME: Use cmd->cmd_line as audit trail for liblvm calls.  Used in
     * archive() call.  Possible example:
     * cmd_line = "lvm_vg_create: vg1\nlvm_vg_extend vg1 /dev/sda1\n"
     */
    cmd->cmd_line = "liblvm";

    /*
     * Turn off writing to stdout/stderr.
     * FIXME Fix lib/ to support a non-interactive mode instead.
     */
    log_suppress(1);

    return (lvm_t) cmd;
}
예제 #3
0
파일: log.c 프로젝트: Distrotech/LVM2
void print_log(int level, const char *file, int line, int dm_errno_or_class,
	       const char *format, ...)
{
	va_list ap;
	char buf[1024], message[4096];
	int bufused, n;
	const char *trformat;		/* Translated format string */
	char *newbuf;
	int use_stderr = level & _LOG_STDERR;
	int log_once = level & _LOG_ONCE;
	int fatal_internal_error = 0;
	size_t msglen;
	const char *indent_spaces = "";
	FILE *stream;
	static int _abort_on_internal_errors_env_present = -1;
	static int _abort_on_internal_errors_env = 0;
	char *env_str;

	level &= ~(_LOG_STDERR|_LOG_ONCE);

	if (_abort_on_internal_errors_env_present < 0) {
		if ((env_str = getenv("DM_ABORT_ON_INTERNAL_ERRORS"))) {
			_abort_on_internal_errors_env_present = 1;
			/* Set when env DM_ABORT_ON_INTERNAL_ERRORS is not "0" */
			_abort_on_internal_errors_env = strcmp(env_str, "0");
		} else
			_abort_on_internal_errors_env_present = 0;
	}

	/* Use value from environment if present, otherwise use value from config. */
	if (((_abort_on_internal_errors_env_present && _abort_on_internal_errors_env) ||
	     (!_abort_on_internal_errors_env_present && _abort_on_internal_errors_config)) &&
	    !strncmp(format, INTERNAL_ERROR, sizeof(INTERNAL_ERROR) - 1)) {
		fatal_internal_error = 1;
		/* Internal errors triggering abort cannot be suppressed. */
		_log_suppress = 0;
		level = _LOG_FATAL;
	}

	if (level <= _LOG_ERR)
		init_error_message_produced(1);

	trformat = _(format);

	if (level < _LOG_DEBUG && dm_errno_or_class && !_lvm_errno)
		_lvm_errno = dm_errno_or_class;

	if (_lvm2_log_fn ||
	    (_store_errmsg && (level <= _LOG_ERR)) ||
	    log_once) {
		va_start(ap, format);
		n = vsnprintf(message, sizeof(message), trformat, ap);
		va_end(ap);

		/* When newer glibc returns >= sizeof(locn), we will just log what
                 * has fit into buffer, it's '\0' terminated string */
		if (n < 0) {
			fprintf(stderr, _("vsnprintf failed: skipping external "
					"logging function"));
			goto log_it;
		}
	}

/* FIXME Avoid pointless use of message buffer when it'll never be read! */
	if (_store_errmsg && (level <= _LOG_ERR) &&
	    _lvm_errmsg_len < MAX_ERRMSG_LEN) {
		msglen = strlen(message);
		if ((_lvm_errmsg_len + msglen + 1) >= _lvm_errmsg_size) {
			_lvm_errmsg_size = 2 * (_lvm_errmsg_len + msglen + 1);
			if ((newbuf = dm_realloc(_lvm_errmsg,
						 _lvm_errmsg_size)))
				_lvm_errmsg = newbuf;
			else
				_lvm_errmsg_size = _lvm_errmsg_len;
		}
		if (_lvm_errmsg &&
		    (_lvm_errmsg_len + msglen + 2) < _lvm_errmsg_size) {
			/* prepend '\n' and copy with '\0' but do not count in */
                        if (_lvm_errmsg_len)
				_lvm_errmsg[_lvm_errmsg_len++] = '\n';
			memcpy(_lvm_errmsg + _lvm_errmsg_len, message, msglen + 1);
			_lvm_errmsg_len += msglen;
		}
	}

	if (log_once) {
		if (!_duplicated)
			_duplicated = dm_hash_create(128);
		if (_duplicated) {
			if (dm_hash_lookup(_duplicated, message))
				level = _LOG_NOTICE;
			else
				(void) dm_hash_insert(_duplicated, message, (void*)1);
		}
	}

	if (_lvm2_log_fn) {
		_lvm2_log_fn(level, file, line, 0, message);
		if (fatal_internal_error)
			abort();
		return;
	}

      log_it:
	if ((verbose_level() >= level) && !_log_suppress) {
		if (verbose_level() > _LOG_DEBUG) {
			(void) dm_snprintf(buf, sizeof(buf), "#%s:%d ",
					   file, line);
		} else
			buf[0] = '\0';

		if (_indent)
			switch (level) {
			case _LOG_NOTICE: indent_spaces = "  "; break;
			case _LOG_INFO:   indent_spaces = "    "; break;
			case _LOG_DEBUG:  indent_spaces = "      "; break;
			default: /* nothing to do */;
			}

		va_start(ap, format);
		switch (level) {
		case _LOG_DEBUG:
			if (verbose_level() < _LOG_DEBUG)
				break;
			if (!debug_class_is_logged(dm_errno_or_class))
				break;
			if ((verbose_level() == level) &&
			    (strcmp("<backtrace>", format) == 0))
				break;
			/* fall through */
		default:
			/* Typically only log_warn goes to stdout */
			stream = (use_stderr || (level != _LOG_WARN)) ? stderr : stdout;
			if (stream == stderr)
				fflush(stdout);
			fprintf(stream, "%s%s%s%s", buf, log_command_name(),
				_msg_prefix, indent_spaces);
			vfprintf(stream, trformat, ap);
			fputc('\n', stream);
		}
		va_end(ap);
	}

	if ((level > debug_level()) ||
	    (level >= _LOG_DEBUG && !debug_class_is_logged(dm_errno_or_class))) {
		if (fatal_internal_error)
			abort();
		return;
	}

	if (_log_to_file && (_log_while_suspended || !critical_section())) {
		fprintf(_log_file, "%s:%d %s%s", file, line, log_command_name(),
			_msg_prefix);

		va_start(ap, format);
		vfprintf(_log_file, trformat, ap);
		va_end(ap);

		fputc('\n', _log_file);
		fflush(_log_file);
	}

	if (_syslog && (_log_while_suspended || !critical_section())) {
		va_start(ap, format);
		vsyslog(level, trformat, ap);
		va_end(ap);
	}

	if (fatal_internal_error)
		abort();

	/* FIXME This code is unfinished - pre-extend & condense. */
	if (!_already_logging && _log_direct && critical_section()) {
		_already_logging = 1;
		memset(&buf, ' ', sizeof(buf));
		bufused = 0;
		if ((n = dm_snprintf(buf, sizeof(buf),
				      "%s:%d %s%s", file, line, log_command_name(),
				      _msg_prefix)) == -1)
			goto done;

		bufused += n;		/* n does not include '\0' */

		va_start(ap, format);
		n = vsnprintf(buf + bufused, sizeof(buf) - bufused,
			      trformat, ap);
		va_end(ap);

		if (n < 0)
			goto done;

		bufused += n;
		if (n >= sizeof(buf))
			bufused = sizeof(buf) - 1;
	      done:
		buf[bufused] = '\n';
		buf[sizeof(buf) - 1] = '\n';
		/* FIXME real size bufused */
		dev_append(&_log_dev, sizeof(buf), buf);
		_already_logging = 0;
	}
}
예제 #4
0
파일: log.c 프로젝트: Rabsido/lvm2
void print_log(int level, const char *file, int line, int dm_errno,
	       const char *format, ...)
{
	va_list ap;
	char buf[1024], locn[4096];
	int bufused, n;
	const char *message;
	const char *trformat;		/* Translated format string */
	char *newbuf;
	int use_stderr = level & _LOG_STDERR;
	int log_once = level & _LOG_ONCE;
	int fatal_internal_error = 0;
	size_t msglen;

	level &= ~(_LOG_STDERR|_LOG_ONCE);

	if (_abort_on_internal_errors &&
	    !strncmp(format, INTERNAL_ERROR,
		     strlen(INTERNAL_ERROR))) {
		fatal_internal_error = 1;
		/* Internal errors triggering abort cannot be suppressed. */
		_log_suppress = 0;
		level = _LOG_FATAL;
	}

	if (_log_suppress == 2)
		return;

	if (level <= _LOG_ERR)
		init_error_message_produced(1);

	trformat = _(format);

	if (dm_errno && !_lvm_errno)
		_lvm_errno = dm_errno;

	if (_lvm2_log_fn ||
	    (_store_errmsg && (level <= _LOG_ERR)) ||
	    log_once) {
		va_start(ap, format);
		n = vsnprintf(locn, sizeof(locn) - 1, trformat, ap);
		va_end(ap);

		if (n < 0) {
			fprintf(stderr, _("vsnprintf failed: skipping external "
					"logging function"));
			goto log_it;
		}

		locn[sizeof(locn) - 1] = '\0';
		message = locn;
	}

/* FIXME Avoid pointless use of message buffer when it'll never be read! */
	if (_store_errmsg && (level <= _LOG_ERR) &&
	    _lvm_errmsg_len < MAX_ERRMSG_LEN) {
		msglen = strlen(message);
		if ((_lvm_errmsg_len + msglen + 1) >= _lvm_errmsg_size) {
			_lvm_errmsg_size = 2 * (_lvm_errmsg_len + msglen + 1);
			if ((newbuf = dm_realloc(_lvm_errmsg,
						 _lvm_errmsg_size)))
				_lvm_errmsg = newbuf;
			else
				_lvm_errmsg_size = _lvm_errmsg_len;
		}
		if (_lvm_errmsg &&
		    (_lvm_errmsg_len + msglen + 2) < _lvm_errmsg_size) {
			/* prepend '\n' and copy with '\0' but do not count in */
                        if (_lvm_errmsg_len)
				_lvm_errmsg[_lvm_errmsg_len++] = '\n';
			memcpy(_lvm_errmsg + _lvm_errmsg_len, message, msglen + 1);
			_lvm_errmsg_len += msglen;
		}
	}

	if (log_once) {
		if (!_duplicated)
			_duplicated = dm_hash_create(128);
		if (_duplicated) {
			if (dm_hash_lookup(_duplicated, message))
				level = _LOG_NOTICE;
			(void) dm_hash_insert(_duplicated, message, (void*)1);
		}
	}

	if (_lvm2_log_fn) {
		_lvm2_log_fn(level, file, line, 0, message);
		if (fatal_internal_error)
			abort();
		return;
	}

      log_it:
	if (!_log_suppress) {
		if (verbose_level() > _LOG_DEBUG)
			(void) dm_snprintf(locn, sizeof(locn), "#%s:%d ",
					   file, line);
		else
			locn[0] = '\0';

		va_start(ap, format);
		switch (level) {
		case _LOG_DEBUG:
			if (!strcmp("<backtrace>", format) &&
			    verbose_level() <= _LOG_DEBUG)
				break;
			if (verbose_level() >= _LOG_DEBUG) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				if (_indent)
					fprintf(stderr, "      ");
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;

		case _LOG_INFO:
			if (verbose_level() >= _LOG_INFO) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				if (_indent)
					fprintf(stderr, "    ");
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;
		case _LOG_NOTICE:
			if (verbose_level() >= _LOG_NOTICE) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				if (_indent)
					fprintf(stderr, "  ");
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;
		case _LOG_WARN:
			if (verbose_level() >= _LOG_WARN) {
				fprintf(use_stderr ? stderr : stdout, "%s%s",
					log_command_name(), _msg_prefix);
				vfprintf(use_stderr ? stderr : stdout, trformat, ap);
				fputc('\n', use_stderr ? stderr : stdout);
			}
			break;
		case _LOG_ERR:
			if (verbose_level() >= _LOG_ERR) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;
		case _LOG_FATAL:
		default:
			if (verbose_level() >= _LOG_FATAL) {
				fprintf(stderr, "%s%s%s", locn, log_command_name(),
					_msg_prefix);
				vfprintf(stderr, trformat, ap);
				fputc('\n', stderr);
			}
			break;
		}
		va_end(ap);
	}

	if (level > debug_level())
		return;

	if (_log_to_file && (_log_while_suspended || !critical_section())) {
		fprintf(_log_file, "%s:%d %s%s", file, line, log_command_name(),
			_msg_prefix);

		va_start(ap, format);
		vfprintf(_log_file, trformat, ap);
		va_end(ap);

		fprintf(_log_file, "\n");
		fflush(_log_file);
	}

	if (_syslog && (_log_while_suspended || !critical_section())) {
		va_start(ap, format);
		vsyslog(level, trformat, ap);
		va_end(ap);
	}

	if (fatal_internal_error)
		abort();

	/* FIXME This code is unfinished - pre-extend & condense. */
	if (!_already_logging && _log_direct && critical_section()) {
		_already_logging = 1;
		memset(&buf, ' ', sizeof(buf));
		bufused = 0;
		if ((n = dm_snprintf(buf, sizeof(buf) - 1,
				      "%s:%d %s%s", file, line, log_command_name(),
				      _msg_prefix)) == -1)
			goto done;

		bufused += n;

		va_start(ap, format);
		n = vsnprintf(buf + bufused - 1, sizeof(buf) - bufused - 1,
			      trformat, ap);
		va_end(ap);
		bufused += n;

		buf[bufused - 1] = '\n';
	      done:
		buf[bufused] = '\n';
		buf[sizeof(buf) - 1] = '\n';
		/* FIXME real size bufused */
		dev_append(&_log_dev, sizeof(buf), buf);
		_already_logging = 0;
	}
}