mirror of
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8c8cf4bbd2
the old value of 20 was reported by Laurent Bercot as being insufficient for a reasonable real-world usage case. actual problem was the internal buffer used by ttyname(), but the implementation of ttyname uses TTY_NAME_MAX, and for consistency it's best to increase both. the new value is aligned with glibc.
155 lines
3.9 KiB
C
155 lines
3.9 KiB
C
#ifndef _LIMITS_H
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#define _LIMITS_H
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#include <features.h>
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/* Most limits are system-specific */
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#include <bits/limits.h>
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/* Support signed or unsigned plain-char */
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#if '\0'-1 > 0
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#define CHAR_MIN 0
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#define CHAR_MAX 255
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#else
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#define CHAR_MIN (-128)
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#define CHAR_MAX 127
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#endif
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/* Some universal constants... */
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#define CHAR_BIT 8
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#define SCHAR_MIN (-128)
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#define SCHAR_MAX 127
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#define UCHAR_MAX 255
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#define SHRT_MIN (-1-0x7fff)
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#define SHRT_MAX 0x7fff
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#define USHRT_MAX 0xffff
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#define INT_MIN (-1-0x7fffffff)
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#define INT_MAX 0x7fffffff
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#define UINT_MAX 0xffffffffU
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#define LONG_MIN (-LONG_MAX-1)
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#define ULONG_MAX (2UL*LONG_MAX+1)
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#define LLONG_MIN (-LLONG_MAX-1)
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#define ULLONG_MAX (2ULL*LLONG_MAX+1)
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#define MB_LEN_MAX 4
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#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define PIPE_BUF 4096
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#ifdef PAGE_SIZE
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#define PAGESIZE PAGE_SIZE
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#endif
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#define FILESIZEBITS 64
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#define NAME_MAX 255
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#define SYMLINK_MAX 255
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#define PATH_MAX 4096
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#define NZERO 20
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#define NGROUPS_MAX 32
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#define ARG_MAX 131072
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#define IOV_MAX 1024
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#define SYMLOOP_MAX 40
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#define WORD_BIT 32
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#define SSIZE_MAX LONG_MAX
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#define TZNAME_MAX 6
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#define TTY_NAME_MAX 32
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#define HOST_NAME_MAX 255
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/* Implementation choices... */
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#define PTHREAD_KEYS_MAX 128
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#define PTHREAD_STACK_MIN 2048
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#define PTHREAD_DESTRUCTOR_ITERATIONS 4
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#define SEM_VALUE_MAX 0x7fffffff
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#define SEM_NSEMS_MAX 256
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#define DELAYTIMER_MAX 0x7fffffff
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#define MQ_PRIO_MAX 32768
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#define LOGIN_NAME_MAX 256
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/* Arbitrary numbers... */
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#define BC_BASE_MAX 99
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#define BC_DIM_MAX 2048
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#define BC_SCALE_MAX 99
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#define BC_STRING_MAX 1000
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#define CHARCLASS_NAME_MAX 14
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#define COLL_WEIGHTS_MAX 2
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#define EXPR_NEST_MAX 32
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#define LINE_MAX 4096
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#define RE_DUP_MAX 255
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#define NL_ARGMAX 9
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#define NL_LANGMAX 32
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#define NL_MSGMAX 32767
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#define NL_SETMAX 255
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#define NL_TEXTMAX 2048
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#endif
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
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|| (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
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#define NL_NMAX 16
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#endif
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/* POSIX/SUS requirements follow. These numbers come directly
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* from SUS and have nothing to do with the host system. */
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#define _POSIX_AIO_LISTIO_MAX 2
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#define _POSIX_AIO_MAX 1
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#define _POSIX_ARG_MAX 4096
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#define _POSIX_CHILD_MAX 25
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#define _POSIX_CLOCKRES_MIN 20000000
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#define _POSIX_DELAYTIMER_MAX 32
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#define _POSIX_HOST_NAME_MAX 255
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#define _POSIX_LINK_MAX 8
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#define _POSIX_LOGIN_NAME_MAX 9
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#define _POSIX_MAX_CANON 255
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#define _POSIX_MAX_INPUT 255
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#define _POSIX_MQ_OPEN_MAX 8
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#define _POSIX_MQ_PRIO_MAX 32
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#define _POSIX_NAME_MAX 14
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#define _POSIX_NGROUPS_MAX 8
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#define _POSIX_OPEN_MAX 20
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#define _POSIX_PATH_MAX 256
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#define _POSIX_PIPE_BUF 512
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#define _POSIX_RE_DUP_MAX 255
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#define _POSIX_RTSIG_MAX 8
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#define _POSIX_SEM_NSEMS_MAX 256
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#define _POSIX_SEM_VALUE_MAX 32767
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#define _POSIX_SIGQUEUE_MAX 32
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#define _POSIX_SSIZE_MAX 32767
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#define _POSIX_STREAM_MAX 8
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#define _POSIX_SS_REPL_MAX 4
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#define _POSIX_SYMLINK_MAX 255
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#define _POSIX_SYMLOOP_MAX 8
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#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
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#define _POSIX_THREAD_KEYS_MAX 128
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#define _POSIX_THREAD_THREADS_MAX 64
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#define _POSIX_TIMER_MAX 32
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#define _POSIX_TRACE_EVENT_NAME_MAX 30
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#define _POSIX_TRACE_NAME_MAX 8
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#define _POSIX_TRACE_SYS_MAX 8
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#define _POSIX_TRACE_USER_EVENT_MAX 32
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#define _POSIX_TTY_NAME_MAX 9
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#define _POSIX_TZNAME_MAX 6
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#define _POSIX2_BC_BASE_MAX 99
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#define _POSIX2_BC_DIM_MAX 2048
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#define _POSIX2_BC_SCALE_MAX 99
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#define _POSIX2_BC_STRING_MAX 1000
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#define _POSIX2_CHARCLASS_NAME_MAX 14
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#define _POSIX2_COLL_WEIGHTS_MAX 2
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#define _POSIX2_EXPR_NEST_MAX 32
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#define _POSIX2_LINE_MAX 2048
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#define _POSIX2_RE_DUP_MAX 255
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#define _XOPEN_IOV_MAX 16
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#define _XOPEN_NAME_MAX 255
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#define _XOPEN_PATH_MAX 1024
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#endif
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