7cfc93193d
src/debug.h (TRACE_SYSRES_OFF_T, _trace_sysres_off_t, TRACE_SYSRES_SSIZE_T, _trace_sysres_ssize_t): New. src/data.c (gpgme_data_read, gpgme_data_write, gpgme_data_seek): Use appropriate new tracing macros instead of casting the results to int. -- This change adds tracing macros for results of system functions of type __off_t and __ssize_t. GnuPG-bug-id: 5481
257 lines
8.6 KiB
C
257 lines
8.6 KiB
C
/* debug.h - interface to debugging functions
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Copyright (C) 2002, 2004, 2005, 2007 g10 Code GmbH
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This file is part of GPGME.
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GPGME is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of
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the License, or (at your option) any later version.
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GPGME is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef DEBUG_H
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#define DEBUG_H
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#include <string.h>
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#include <errno.h>
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#include "gpgme.h" /* Required for gpgme_error stuff. */
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/* Indirect stringification, requires __STDC__ to work. */
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#define STRINGIFY(v) #v
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#define XSTRINGIFY(v) STRINGIFY(v)
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/*
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* The debug levels.
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*
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* Note that TRACE_LOGBUFX uses the current debug level + 1.
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*/
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#define DEBUG_INIT 1
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#define DEBUG_GLOBAL 2
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#define DEBUG_CTX 3
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#define DEBUG_ENGINE 4
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#define DEBUG_DATA 5
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#define DEBUG_ASSUAN 6
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#define DEBUG_SYSIO 7
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/* Remove path components from filenames (i.e. __FILE__) for cleaner
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logs. */
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static inline const char *_gpgme_debug_srcname (const char *file)
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GPGME_GCC_A_PURE;
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static inline const char *
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_gpgme_debug_srcname (const char *file)
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{
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const char *s = strrchr (file, '/');
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return s? s+1:file;
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}
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/* Initialization helper function; see debug.c. */
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int _gpgme_debug_set_debug_envvar (const char *value);
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/* Called early to initialize the logging. */
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void _gpgme_debug_subsystem_init (void);
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/* Log the formatted string FORMAT at debug level LEVEL or higher. */
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int _gpgme_debug (void **line, int level, int mode,
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const char *func, const char *tagname, const char *tagvalue,
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const char *format, ...) GPGRT_ATTR_PRINTF(7,8);
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/* Add the formatted string FORMAT to the debug line *LINE. */
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void _gpgme_debug_add (void **helper, const char *format, ...);
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/* Finish construction of *LINE and send it to the debug output
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stream. */
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void _gpgme_debug_end (void **helper);
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void _gpgme_debug_buffer (int lvl, const char *const fmt,
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const char *const func, const char *const buffer,
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size_t len);
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void _gpgme_debug_frame_begin (void);
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int _gpgme_debug_frame_end (void);
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static inline gpgme_error_t
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_gpgme_trace_gpgme_error (gpgme_error_t err, const char *file, int line)
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{
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_gpgme_debug (NULL, DEBUG_ENGINE, -1, NULL, NULL, NULL,
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"%s:%d: returning error: %s\n",
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_gpgme_debug_srcname (file), line, gpgme_strerror (err));
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return err;
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}
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/* Trace support. */
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/* FIXME: For now. */
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#define _gpgme_debug_trace() 1
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#define _TRACE(lvl, name, tag) \
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int _gpgme_trace_level = lvl; \
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const char *const _gpgme_trace_func = name; \
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const char *const _gpgme_trace_tagname = STRINGIFY (tag); \
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void *_gpgme_trace_tag = (void *) (uintptr_t) tag; \
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_gpgme_debug_frame_begin ()
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/* Note: We can't protect this with a do-while block. */
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#define TRACE_BEG(lvl, name, tag, ...) \
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_TRACE (lvl, name, tag); \
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_gpgme_debug (NULL, _gpgme_trace_level, 1, \
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_gpgme_trace_func, _gpgme_trace_tagname, _gpgme_trace_tag, \
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__VA_ARGS__)
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#define TRACE(lvl, name, tag, ...) do { \
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_gpgme_debug_frame_begin (); \
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_gpgme_debug (NULL, lvl, 0, name, STRINGIFY (tag), (void *)(uintptr_t)tag, \
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__VA_ARGS__); \
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_gpgme_debug_frame_end (); \
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} while (0)
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/* Trace a gpg-error and return it. */
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#define TRACE_ERR(err) \
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_trace_err ((err), _gpgme_trace_level, _gpgme_trace_func, __LINE__)
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static inline gpg_error_t
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_trace_err (gpg_error_t err, int lvl, const char *func, int line)
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{
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if (!err)
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_gpgme_debug (NULL, lvl, 3, func, NULL, NULL, "");
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else
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_gpgme_debug (NULL, lvl, -1, NULL, NULL, NULL,
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"%s:%d: error: %s <%s>\n",
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func, line, gpgme_strerror (err), gpgme_strsource (err));
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_gpgme_debug_frame_end ();
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return err;
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}
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/* Trace a system call result of type int and return it. */
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#define TRACE_SYSRES(res) \
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_trace_sysres ((res), _gpgme_trace_level, _gpgme_trace_func, __LINE__)
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static inline int
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_trace_sysres (int res, int lvl, const char *func, int line)
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{
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if (res >= 0)
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_gpgme_debug (NULL, lvl, 3, func, NULL, NULL, "result=%d", res);
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else
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_gpgme_debug (NULL, lvl, -1, NULL, NULL, NULL,
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"%s:%d: error: %s (%d)\n",
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func, line, strerror (errno), errno);
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_gpgme_debug_frame_end ();
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return res;
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}
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/* Trace a system call result of type gpgme_off_t and return it. */
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#define TRACE_SYSRES_OFF_T(res) \
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_trace_sysres_off_t ((res), _gpgme_trace_level, _gpgme_trace_func, __LINE__)
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static inline gpgme_off_t
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_trace_sysres_off_t (gpgme_off_t res, int lvl, const char *func, int line)
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{
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if (res >= 0)
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_gpgme_debug (NULL, lvl, 3, func, NULL, NULL, "result=%ld", res);
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else
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_gpgme_debug (NULL, lvl, -1, NULL, NULL, NULL,
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"%s:%d: error: %s (%d)\n",
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func, line, strerror (errno), errno);
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_gpgme_debug_frame_end ();
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return res;
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}
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/* Trace a system call result of type gpgme_ssize_t and return it. */
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#define TRACE_SYSRES_SSIZE_T(res) \
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_trace_sysres_ssize_t ((res), _gpgme_trace_level, _gpgme_trace_func, __LINE__)
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static inline gpgme_ssize_t
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_trace_sysres_ssize_t (gpgme_ssize_t res, int lvl, const char *func, int line)
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{
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if (res >= 0)
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_gpgme_debug (NULL, lvl, 3, func, NULL, NULL, "result=%zd", res);
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else
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_gpgme_debug (NULL, lvl, -1, NULL, NULL, NULL,
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"%s:%d: error: %s (%d)\n",
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func, line, strerror (errno), errno);
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_gpgme_debug_frame_end ();
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return res;
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}
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/* Trace a system call error and return it. */
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#define TRACE_SYSERR(rc) \
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_trace_syserr ((rc), _gpgme_trace_level, _gpgme_trace_func, __LINE__)
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static inline int
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_trace_syserr (int rc, int lvl, const char *func, int line)
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{
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if (!rc)
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_gpgme_debug (NULL, lvl, 3, func, NULL, NULL, "result=0");
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else
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_gpgme_debug (NULL, lvl, -1, NULL, NULL, NULL,
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"%s:%d: error: %s (%d)\n",
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func, line, strerror (rc), rc);
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_gpgme_debug_frame_end ();
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return rc;
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}
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#define TRACE_SUC(...) do { \
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_gpgme_debug (NULL, _gpgme_trace_level, 3, _gpgme_trace_func, NULL, NULL, \
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__VA_ARGS__); \
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_gpgme_debug_frame_end (); \
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} while (0)
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#define TRACE_LOG(...) do { \
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_gpgme_debug (NULL, _gpgme_trace_level, 2, \
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_gpgme_trace_func, _gpgme_trace_tagname, _gpgme_trace_tag, \
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__VA_ARGS__); \
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} while (0)
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#define TRACE_LOGBUF(buf, len) do { \
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_gpgme_debug_buffer (_gpgme_trace_level, "%s: check: %s", \
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_gpgme_trace_func, buf, len); \
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} while (0)
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#define TRACE_LOGBUFX(buf, len) do { \
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_gpgme_debug_buffer (_gpgme_trace_level+1, "%s: check: %s", \
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_gpgme_trace_func, buf, len); \
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} while (0)
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#define TRACE_SEQ(hlp,...) do { \
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_gpgme_debug (&(hlp), _gpgme_trace_level, 2, _gpgme_trace_func, \
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_gpgme_trace_tagname, _gpgme_trace_tag, __VA_ARGS__); \
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} while (0)
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#define TRACE_ADD0(hlp,fmt) \
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_gpgme_debug_add (&(hlp), fmt)
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#define TRACE_ADD1(hlp,fmt,a) \
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_gpgme_debug_add (&(hlp), fmt, (a))
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#define TRACE_ADD2(hlp,fmt,a,b) \
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_gpgme_debug_add (&(hlp), fmt, (a), (b))
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#define TRACE_ADD3(hlp,fmt,a,b,c) \
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_gpgme_debug_add (&(hlp), fmt, (a), (b), (c))
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#define TRACE_END(hlp,fmt) \
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_gpgme_debug_add (&(hlp), fmt); \
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_gpgme_debug_end (&(hlp))
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#define TRACE_ENABLED(hlp) (!!(hlp))
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/* And finally a simple macro to trace the location of an error code.
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This macro is independent of the other trace macros and may be used
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without any preconditions. */
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#define trace_gpg_error(e) \
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_gpgme_trace_gpgme_error (gpg_error (e), __FILE__, __LINE__)
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#endif /* DEBUG_H */
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