include/lttng/ust-error.h

   1 #ifndef _LTTNG_UST_ERROR_H
   2 #define _LTTNG_UST_ERROR_H
   3
   4 /*
   5  * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
   6  *                      Julien Desfossez <julien.desfossez@polymtl.ca>
   7  *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; only
  12  * version 2.1 of the License.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 /*
  25  * This header is meant for liblttng and libust internal use ONLY.
  26  * These declarations should NOT be considered stable API.
  27  */
  28
  29 #include <limits.h>
  30 #include <unistd.h>
  31 #include <lttng/ust-abi.h>
  32
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /*
  38  * ustcomm error code.
  39  */
  40 enum lttng_ust_error_code {
  41         LTTNG_UST_OK = 0,                       /* Ok */
  42         LTTNG_UST_ERR = 1024,                   /* Unknown Error */
  43         LTTNG_UST_ERR_NOENT = 1025,             /* No entry */
  44         LTTNG_UST_ERR_EXIST = 1026,             /* Object exists */
  45         LTTNG_UST_ERR_INVAL = 1027,             /* Invalid argument */
  46         LTTNG_UST_ERR_PERM  = 1028,             /* Permission denied */
  47         LTTNG_UST_ERR_NOSYS = 1029,             /* Not implemented */
  48         LTTNG_UST_ERR_EXITING = 1030,           /* Process is exiting */
  49
  50         LTTNG_UST_ERR_INVAL_MAGIC = 1031,       /* Invalid magic number */
  51         LTTNG_UST_ERR_INVAL_SOCKET_TYPE = 1032, /* Invalid socket type */
  52         LTTNG_UST_ERR_UNSUP_MAJOR = 1033,       /* Unsupported major version */
  53         LTTNG_UST_ERR_PEERCRED = 1034,          /* Cannot get unix socket peer credentials */
  54         LTTNG_UST_ERR_PEERCRED_PID = 1035,      /* Peer credentials PID is invalid. Socket appears to belong to a distinct, non-nested pid namespace. */
  55
  56         /* MUST be last element */
  57         LTTNG_UST_ERR_NR,                       /* Last element */
  58 };
  59
  60 /*
  61  * Return a human-readable error message for an lttng-ust error code.
  62  * code must be a positive value (or 0).
  63  */
  64 extern const char *lttng_ust_strerror(int code);
  65
  66 #ifdef __cplusplus
  67 }
  68 #endif
  69
  70 #endif  /* _LTTNG_UST_ERROR_H */