drivers/staging/android/logger.h

   1 /* include/linux/logger.h
   2  *
   3  * Copyright (C) 2007-2008 Google, Inc.
   4  * Author: Robert Love <rlove@android.com>
   5  *
   6  * This software is licensed under the terms of the GNU General Public
   7  * License version 2, as published by the Free Software Foundation, and
   8  * may be copied, distributed, and modified under those terms.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  */
  16
  17 #ifndef _LINUX_LOGGER_H
  18 #define _LINUX_LOGGER_H
  19
  20 #include <linux/types.h>
  21 #include <linux/ioctl.h>
  22
  23 /**
  24  * struct user_logger_entry_compat - defines a single entry that is given to a logger
  25  * @len:        The length of the payload
  26  * @__pad:      Two bytes of padding that appear to be required
  27  * @pid:        The generating process' process ID
  28  * @tid:        The generating process' thread ID
  29  * @sec:        The number of seconds that have elapsed since the Epoch
  30  * @nsec:       The number of nanoseconds that have elapsed since @sec
  31  * @msg:        The message that is to be logged
  32  *
  33  * The userspace structure for version 1 of the logger_entry ABI.
  34  * This structure is returned to userspace unless the caller requests
  35  * an upgrade to a newer ABI version.
  36  */
  37 struct user_logger_entry_compat {
  38         __u16           len;
  39         __u16           __pad;
  40         __s32           pid;
  41         __s32           tid;
  42         __s32           sec;
  43         __s32           nsec;
  44         char            msg[0];
  45 };
  46
  47 /**
  48  * struct logger_entry - defines a single entry that is given to a logger
  49  * @len:        The length of the payload
  50  * @hdr_size:   sizeof(struct logger_entry_v2)
  51  * @pid:        The generating process' process ID
  52  * @tid:        The generating process' thread ID
  53  * @sec:        The number of seconds that have elapsed since the Epoch
  54  * @nsec:       The number of nanoseconds that have elapsed since @sec
  55  * @euid:       Effective UID of logger
  56  * @msg:        The message that is to be logged
  57  *
  58  * The structure for version 2 of the logger_entry ABI.
  59  * This structure is returned to userspace if ioctl(LOGGER_SET_VERSION)
  60  * is called with version >= 2
  61  */
  62 struct logger_entry {
  63         __u16           len;
  64         __u16           hdr_size;
  65         __s32           pid;
  66         __s32           tid;
  67         __s32           sec;
  68         __s32           nsec;
  69         kuid_t          euid;
  70         char            msg[0];
  71 };
  72
  73 #define LOGGER_LOG_RADIO        "log_radio"     /* radio-related messages */
  74 #define LOGGER_LOG_EVENTS       "log_events"    /* system/hardware events */
  75 #define LOGGER_LOG_SYSTEM       "log_system"    /* system/framework messages */
  76 #define LOGGER_LOG_MAIN         "log_main"      /* everything else */
  77
  78 #define LOGGER_ENTRY_MAX_PAYLOAD        4076
  79
  80 #define __LOGGERIO      0xAE
  81
  82 #define LOGGER_GET_LOG_BUF_SIZE         _IO(__LOGGERIO, 1) /* size of log */
  83 #define LOGGER_GET_LOG_LEN              _IO(__LOGGERIO, 2) /* used log len */
  84 #define LOGGER_GET_NEXT_ENTRY_LEN       _IO(__LOGGERIO, 3) /* next entry len */
  85 #define LOGGER_FLUSH_LOG                _IO(__LOGGERIO, 4) /* flush log */
  86 #define LOGGER_GET_VERSION              _IO(__LOGGERIO, 5) /* abi version */
  87 #define LOGGER_SET_VERSION              _IO(__LOGGERIO, 6) /* abi version */
  88
  89 #endif /* _LINUX_LOGGER_H */