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 MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
   8  * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
   9  *
  10  * Permission is hereby granted to use or copy this program
  11  * for any purpose,  provided the above notices are retained on all copies.
  12  * Permission to modify the code and to distribute modified code is granted,
  13  * provided the above notices are retained, and a notice that the code was
  14  * modified is included with the above copyright notice.
  15  */
  16
  17 /*
  18  * lttng_ust_getprocname.
  19  */
  20 #ifdef __linux__
  21
  22 #include <sys/prctl.h>
  23
  24 #define LTTNG_UST_PROCNAME_LEN 17
  25
  26 static inline
  27 void lttng_ust_getprocname(char *name)
  28 {
  29         (void) prctl(PR_GET_NAME, (unsigned long) name, 0, 0, 0);
  30 }
  31
  32 #elif defined(__FreeBSD__)
  33 #include <stdlib.h>
  34 #include <string.h>
  35
  36 /*
  37  * Limit imposed by Linux UST-sessiond ABI.
  38  */
  39 #define LTTNG_UST_PROCNAME_LEN 17
  40
  41 /*
  42  * Acts like linux prctl, the string is not necessarily 0-terminated if
  43  * 16-byte long.
  44  */
  45 static inline
  46 void lttng_ust_getprocname(char *name)
  47 {
  48         const char *bsd_name;
  49
  50         bsd_name = getprogname();
  51         if (!bsd_name)
  52                 name[0] = '\0';
  53         memcpy(name, bsd_name, LTTNG_UST_PROCNAME_LEN - 1);
  54 }
  55
  56 #endif
  57
  58 #include <errno.h>
  59
  60 #ifndef ENODATA
  61 #define ENODATA ENOMSG
  62 #endif
  63
  64 #endif /* _UST_COMPAT_H */