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_RESTART_USEC (100*USEC_PER_MSEC)
  29
  30 /* Many different things, but also system unit start/stop */
  31 #define DEFAULT_TIMEOUT_USEC (DEFAULT_TIMEOUT_SEC*USEC_PER_SEC)
  32 /* User unit start/stop */
  33 #define DEFAULT_USER_TIMEOUT_USEC (DEFAULT_USER_TIMEOUT_SEC*USEC_PER_SEC)
  34 /* Timeout for user confirmation on the console */
  35 #define DEFAULT_CONFIRM_USEC (30*USEC_PER_SEC)
  36
  37 /* We use an extra-long timeout for the reload. This is because a reload or reexec means generators are rerun
  38  * which are timed out after DEFAULT_TIMEOUT_USEC. Let's use twice that time here, so that the generators can
  39  * have their timeout, and for everything else there's the same time budget in place. */
  40 #define DAEMON_RELOAD_TIMEOUT_SEC (DEFAULT_TIMEOUT_USEC * 2)
  41
  42 #define DEFAULT_START_LIMIT_INTERVAL (10*USEC_PER_SEC)
  43 #define DEFAULT_START_LIMIT_BURST 5
  44
  45 /* Wait for 1.5 seconds at maximum for freeze operation */
  46 #define FREEZE_TIMEOUT (1500 * USEC_PER_MSEC)
  47
  48 /* The default time after which exit-on-idle services exit. This
  49  * should be kept lower than the watchdog timeout, because otherwise
  50  * the watchdog pings will keep the loop busy. */
  51 #define DEFAULT_EXIT_USEC (30*USEC_PER_SEC)
  52
  53 /* The default value for the net.unix.max_dgram_qlen sysctl */
  54 #define DEFAULT_UNIX_MAX_DGRAM_QLEN 512
  55
  56 #define SIGNALS_CRASH_HANDLER SIGSEGV,SIGILL,SIGFPE,SIGBUS,SIGQUIT,SIGABRT
  57 #define SIGNALS_IGNORE SIGPIPE
  58
  59 #define NOTIFY_FD_MAX 768
  60 #define NOTIFY_BUFFER_MAX PIPE_BUF
  61
  62 #if HAVE_SPLIT_USR
  63 #  define _CONF_PATHS_SPLIT_USR_NULSTR(n) "/lib/" n "\0"
  64 #  define _CONF_PATHS_SPLIT_USR(n) , "/lib/" n
  65 #else
  66 #  define _CONF_PATHS_SPLIT_USR_NULSTR(n)
  67 #  define _CONF_PATHS_SPLIT_USR(n)
  68 #endif
  69
  70 /* Return a nulstr for a standard cascade of configuration paths, suitable to pass to
  71  * conf_files_list_nulstr() to implement drop-in directories for extending configuration files. */
  72 #define CONF_PATHS_NULSTR(n)                    \
  73         "/etc/" n "\0"                          \
  74         "/run/" n "\0"                          \
  75         "/usr/local/lib/" n "\0"                \
  76         "/usr/lib/" n "\0"                      \
  77         _CONF_PATHS_SPLIT_USR_NULSTR(n)
  78
  79 #define CONF_PATHS_USR(n)                       \
  80         "/etc/" n,                              \
  81         "/run/" n,                              \
  82         "/usr/local/lib/" n,                    \
  83         "/usr/lib/" n
  84
  85 #define CONF_PATHS(n)                           \
  86         CONF_PATHS_USR(n)                       \
  87         _CONF_PATHS_SPLIT_USR(n)
  88
  89 #define CONF_PATHS_USR_STRV(n)                  \
  90         STRV_MAKE(CONF_PATHS_USR(n))
  91
  92 #define CONF_PATHS_STRV(n)                      \
  93         STRV_MAKE(CONF_PATHS(n))
  94
  95 /* The limit for PID 1 itself (which is not inherited to children) */
  96 #define HIGH_RLIMIT_MEMLOCK (1024ULL*1024ULL*64ULL)
  97
  98 /* Since kernel 5.16 the kernel default limit was raised to 8M. Let's adjust things on old kernels too, and
  99  * in containers so that our children inherit that. */
 100 #define DEFAULT_RLIMIT_MEMLOCK (1024ULL*1024ULL*8ULL)
 101
 102 #define PLYMOUTH_SOCKET {                                       \
 103                 .un.sun_family = AF_UNIX,                       \
 104                 .un.sun_path = "\0/org/freedesktop/plymouthd",  \
 105         }
 106
 107 /* Path where PID1 listens for varlink subscriptions from systemd-oomd to notify of changes in ManagedOOM settings. */
 108 #define VARLINK_ADDR_PATH_MANAGED_OOM_SYSTEM "/run/systemd/io.system.ManagedOOM"
 109 /* Path where systemd-oomd listens for varlink connections from user managers to report changes in ManagedOOM settings. */
 110 #define VARLINK_ADDR_PATH_MANAGED_OOM_USER "/run/systemd/oom/io.system.ManagedOOM"
 111
 112 #define KERNEL_BASELINE_VERSION "4.15"