src/basic/constants.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #if !defined(HAS_FEATURE_MEMORY_SANITIZER)
   5 #  if defined(__has_feature)
   6 #    if __has_feature(memory_sanitizer)
   7 #      define HAS_FEATURE_MEMORY_SANITIZER 1
   8 #    endif
   9 #  endif
  10 #  if !defined(HAS_FEATURE_MEMORY_SANITIZER)
  11 #    define HAS_FEATURE_MEMORY_SANITIZER 0
  12 #  endif
  13 #endif
  14
  15 #if !defined(HAS_FEATURE_ADDRESS_SANITIZER)
  16 #  ifdef __SANITIZE_ADDRESS__
  17 #      define HAS_FEATURE_ADDRESS_SANITIZER 1
  18 #  elif defined(__has_feature)
  19 #    if __has_feature(address_sanitizer)
  20 #      define HAS_FEATURE_ADDRESS_SANITIZER 1
  21 #    endif
  22 #  endif
  23 #  if !defined(HAS_FEATURE_ADDRESS_SANITIZER)
  24 #    define HAS_FEATURE_ADDRESS_SANITIZER 0
  25 #  endif
  26 #endif
  27
  28 #define DEFAULT_TIMEOUT_USEC (90*USEC_PER_SEC)
  29 #define DEFAULT_RESTART_USEC (100*USEC_PER_MSEC)
  30 #define DEFAULT_CONFIRM_USEC (30*USEC_PER_SEC)
  31
  32 /* We use an extra-long timeout for the reload. This is because a reload or reexec means generators are rerun
  33  * which are timed out after DEFAULT_TIMEOUT_USEC. Let's use twice that time here, so that the generators can
  34  * have their timeout, and for everything else there's the same time budget in place. */
  35 #define DAEMON_RELOAD_TIMEOUT_SEC (DEFAULT_TIMEOUT_USEC * 2)
  36
  37 #define DEFAULT_START_LIMIT_INTERVAL (10*USEC_PER_SEC)
  38 #define DEFAULT_START_LIMIT_BURST 5
  39
  40 /* The default time after which exit-on-idle services exit. This
  41  * should be kept lower than the watchdog timeout, because otherwise
  42  * the watchdog pings will keep the loop busy. */
  43 #define DEFAULT_EXIT_USEC (30*USEC_PER_SEC)
  44
  45 /* The default value for the net.unix.max_dgram_qlen sysctl */
  46 #define DEFAULT_UNIX_MAX_DGRAM_QLEN 512UL
  47
  48 #define SIGNALS_CRASH_HANDLER SIGSEGV,SIGILL,SIGFPE,SIGBUS,SIGQUIT,SIGABRT
  49 #define SIGNALS_IGNORE SIGPIPE
  50
  51 #define NOTIFY_FD_MAX 768
  52 #define NOTIFY_BUFFER_MAX PIPE_BUF
  53
  54 #if HAVE_SPLIT_USR
  55 #  define _CONF_PATHS_SPLIT_USR_NULSTR(n) "/lib/" n "\0"
  56 #  define _CONF_PATHS_SPLIT_USR(n) , "/lib/" n
  57 #else
  58 #  define _CONF_PATHS_SPLIT_USR_NULSTR(n)
  59 #  define _CONF_PATHS_SPLIT_USR(n)
  60 #endif
  61
  62 /* Return a nulstr for a standard cascade of configuration paths,
  63  * suitable to pass to conf_files_list_nulstr() or config_parse_many_nulstr()
  64  * to implement drop-in directories for extending configuration
  65  * files. */
  66 #define CONF_PATHS_NULSTR(n)                    \
  67         "/etc/" n "\0"                          \
  68         "/run/" n "\0"                          \
  69         "/usr/local/lib/" n "\0"                \
  70         "/usr/lib/" n "\0"                      \
  71         _CONF_PATHS_SPLIT_USR_NULSTR(n)
  72
  73 #define CONF_PATHS_USR(n)                       \
  74         "/etc/" n,                              \
  75         "/run/" n,                              \
  76         "/usr/local/lib/" n,                    \
  77         "/usr/lib/" n
  78
  79 #define CONF_PATHS(n)                           \
  80         CONF_PATHS_USR(n)                       \
  81         _CONF_PATHS_SPLIT_USR(n)
  82
  83 #define CONF_PATHS_USR_STRV(n)                  \
  84         STRV_MAKE(CONF_PATHS_USR(n))
  85
  86 #define CONF_PATHS_STRV(n)                      \
  87         STRV_MAKE(CONF_PATHS(n))
  88
  89 /* The limit for PID 1 itself (which is not inherited to children) */
  90 #define HIGH_RLIMIT_MEMLOCK (1024ULL*1024ULL*64ULL)
  91
  92 /* Since kernel 5.16 the kernel default limit was raised to 8M. Let's adjust things on old kernels too, and
  93  * in containers so that our children inherit that. */
  94 #define DEFAULT_RLIMIT_MEMLOCK (1024ULL*1024ULL*8ULL)
  95
  96 #define PLYMOUTH_SOCKET {                                       \
  97                 .un.sun_family = AF_UNIX,                       \
  98                 .un.sun_path = "\0/org/freedesktop/plymouthd",  \
  99         }
 100
 101 /* Path where PID1 listens for varlink subscriptions from systemd-oomd to notify of changes in ManagedOOM settings. */
 102 #define VARLINK_ADDR_PATH_MANAGED_OOM_SYSTEM "/run/systemd/io.system.ManagedOOM"
 103 /* Path where systemd-oomd listens for varlink connections from user managers to report changes in ManagedOOM settings. */
 104 #define VARLINK_ADDR_PATH_MANAGED_OOM_USER "/run/systemd/oom/io.system.ManagedOOM"
 105
 106 #define KERNEL_BASELINE_VERSION "4.15"