tools/lvm2cmd.h

   1 /*
   2  * Copyright (C) 2003-2004 Sistina Software, Inc. All rights reserved.
   3  * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
   4  *
   5  * This file is part of LVM2.
   6  *
   7  * This copyrighted material is made available to anyone wishing to use,
   8  * modify, copy, or redistribute it subject to the terms and conditions
   9  * of the GNU Lesser General Public License v.2.1.
  10  *
  11  * You should have received a copy of the GNU Lesser General Public License
  12  * along with this program; if not, write to the Free Software Foundation,
  13  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  14  */
  15
  16 #ifndef _LVM_CMDLIB_H
  17 #define _LVM_CMDLIB_H
  18
  19 #ifdef __cplusplus
  20 extern "C" {
  21 #endif
  22
  23 #ifndef _LVM_LOG_H
  24 typedef void (*lvm2_log_fn_t) (int level, const char *file, int line,
  25                                int dm_errno, const char *message);
  26
  27 #endif
  28
  29 #define LVM2_LOG_SUPPRESS       0
  30
  31 /* Logging levels */
  32 #define LVM2_LOG_FATAL          2
  33 #define LVM2_LOG_ERROR          3
  34 #define LVM2_LOG_PRINT          4
  35 #define LVM2_LOG_VERBOSE        5
  36 #define LVM2_LOG_VERY_VERBOSE   6
  37 #define LVM2_LOG_DEBUG          7
  38
  39 /*
  40  * Define external function to replace the built-in logging function.
  41  * It receives output line-by-line.
  42  *
  43  * level is the logging level (see above)
  44  * file & line refer to the source code where the message originates.
  45  */
  46 void lvm2_log_fn(lvm2_log_fn_t log_fn);
  47
  48 /*
  49  * Initialise library.
  50  * Returns a handle so repeated use of lvm2_run is more efficient.
  51  */
  52 void *lvm2_init(void);
  53
  54 /*
  55  * Disable any dmeventd calls that the library may otherwise do. Useful to avoid
  56  * recursive calls from dmeventd to itself.
  57  */
  58 void lvm2_disable_dmeventd_monitoring(void *handle);
  59
  60 /*
  61  * Set log level (as above) if using built-in logging function.
  62  * Default is LVM2_LOG_PRINT.  Use LVM2_LOG_SUPPRESS to suppress output.
  63  */
  64 void lvm2_log_level(void *handle, int level);
  65
  66 /*
  67  * Run an LVM2 command.
  68  * Use NULL handle if the call is a one-off and you don't want to bother
  69  * calling lvm2_init/lvm2_exit.
  70  */
  71 int lvm2_run(void *handle, const char *cmdline);
  72
  73 /* Release handle */
  74 void lvm2_exit(void *handle);
  75
  76 #ifdef __cplusplus
  77 }
  78 #endif
  79 #endif