sysconf.2 (2010 09)

s
sysconf(2) sysconf(2)
Maximum semaphore value.
SHARED_MEMORY_OBJECTS
(_SC_SHARED_MEMORY_OBJECTS
)
Positive if the system supports POSIX shared memory.
SIGQUEUE_MAX (_SC_SIGQUEUE_MAX
)
Maximum number of queued signals that a process may send and have
pending at the receivers at any time.
STREAM_MAX (_SC_STREAM_MAX
)
Maximum number of
stdio streams that one process can have open at
one time.
TIMER_MAX (_SC_TIMER_MAX
)
Maximum number of POSIX.4 timers per process, if POSIX.4 timers are
supported;
-1 otherwise.
TTY_NAME_MAX (_SC_TTY_NAME_MAX
)
Value of
TTY_NAME_MAX.
TZNAME_MAX (_SC_TZNAME_MAX)
Maximum number of bytes in a time zone name for the
TZ environment
variable.
XOPEN_CRYPT (_SC_XOPEN_CRYPT
)
Equal to
1 if the X/Open Encryption Feature Group is supported;
-1 oth-
erwise.
XOPEN_ENH_I18N (_SC_XOPEN_ENH_I18N
)
Equal to
1 if the X/Open Enhanced Internationalization Feature Group
is supported; -1 otherwise.
XOPEN_LEGACY (_SC_XOPEN_LEGACY
)
Not supported.
XOPEN_REALTIME (_SC_XOPEN_REALTIME
)
Not supported.
XOPEN_REALTIME_THREADS
(_SC_XOPEN_REALTIME_THREADS)
Not supported.
XOPEN_SHM (_SC_XOPEN_SHM)
Equal to
1 if the X/Open Shared Memory Feature Group is supported;
-1
otherwise.
XOPEN_STREAMS (_SC_XOPEN_STREAMS)
Equal to
200112 if the Streams option is supported; -1 otherwise.
XOPEN_VERSION (_SC_XOPEN_VERSION)
Issue number of X/Open Portability Guide supported.
XBS5_ILP32_OFF32 (_SC_XBS5_ILP32_OFF32
)
A flag that denotes whether
_CS_XBS5_ILP32_OFF32_CFLAGS,
_CS_XBS5_ILP32_OFF32_LDFLAGS,
_CS_XBS5_ILP32_OFF32_LIBS and
_CS_XBS5_ILP32_OFF32_LINTFLAGS are supported by
confstr(). A return value of -1 indicates they are not supported.
XBS5_ILP32_OFFBIG (_SC_XBS5_ILP32_OFFBIG)
A flag that denotes whether
_CS_XBS5_ILP32_OFFBIG_CFLAGS,
_CS_XBS5_ILP32_OFFBIG_LDFLAGS,
_CS_XBS5_ILP32_OFFBIG_LIBS and
_CS_XBS5_ILP32_OFFBIG_LINTFLAGS are supported by
10 Hewlett-Packard Company − 10 − HP-UX 11i Version 3: September 2010