liblttng-ust/compat.h

   1 #ifndef _UST_COMPAT_H
   2 #define _UST_COMPAT_H
   3
   4 /*
   5  * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; only
  10  * version 2.1 of the License.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /*
  23  * lttng_ust_getprocname.
  24  */
  25 #ifdef __linux__
  26
  27 #include <sys/prctl.h>
  28
  29 #define LTTNG_UST_PROCNAME_LEN 17
  30
  31 static inline
  32 void lttng_ust_getprocname(char *name)
  33 {
  34         (void) prctl(PR_GET_NAME, (unsigned long) name, 0, 0, 0);
  35 }
  36
  37 #elif defined(__FreeBSD__)
  38 #include <stdlib.h>
  39 #include <string.h>
  40
  41 /*
  42  * Limit imposed by Linux UST-sessiond ABI.
  43  */
  44 #define LTTNG_UST_PROCNAME_LEN 17
  45
  46 /*
  47  * Acts like linux prctl, the string is not necessarily 0-terminated if
  48  * 16-byte long.
  49  */
  50 static inline
  51 void lttng_ust_getprocname(char *name)
  52 {
  53         const char *bsd_name;
  54
  55         bsd_name = getprogname();
  56         if (!bsd_name)
  57                 name[0] = '\0';
  58         else
  59                 strncpy(name, bsd_name, LTTNG_UST_PROCNAME_LEN - 1);
  60 }
  61
  62 #endif
  63
  64 #include <errno.h>
  65
  66 #ifndef ENODATA
  67 #define ENODATA ENOMSG
  68 #endif
  69
  70 #endif /* _UST_COMPAT_H */