#ifndef _LIMITS_H
#define _LIMITS_H
-/* Most limits are system-specific */
+#include <features.h>
-#include <bits/limits.h>
+#include <bits/alltypes.h> /* __LONG_MAX */
+
+/* Support signed or unsigned plain-char */
-/* Some universal constants... */
+#if '\xff' > 0
+#define CHAR_MIN 0
+#define CHAR_MAX 255
+#else
+#define CHAR_MIN (-128)
+#define CHAR_MAX 127
+#endif
#define CHAR_BIT 8
#define SCHAR_MIN (-128)
#define SCHAR_MAX 127
#define UCHAR_MAX 255
-#define CHAR_MIN (-128)
-#define CHAR_MAX 127
-#define SSIZE_MAX LONG_MAX
+#define SHRT_MIN (-1-0x7fff)
+#define SHRT_MAX 0x7fff
+#define USHRT_MAX 0xffff
+#define INT_MIN (-1-0x7fffffff)
+#define INT_MAX 0x7fffffff
+#define UINT_MAX 0xffffffffU
+#define LONG_MIN (-LONG_MAX-1)
+#define LONG_MAX __LONG_MAX
+#define ULONG_MAX (2UL*LONG_MAX+1)
+#define LLONG_MIN (-LLONG_MAX-1)
+#define LLONG_MAX 0x7fffffffffffffffLL
+#define ULLONG_MAX (2ULL*LLONG_MAX+1)
#define MB_LEN_MAX 4
+
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#include <bits/limits.h>
+
+#define PIPE_BUF 4096
+#define FILESIZEBITS 64
+#ifndef NAME_MAX
+#define NAME_MAX 255
+#endif
+#define PATH_MAX 4096
+#define NGROUPS_MAX 32
+#define ARG_MAX 131072
+#define IOV_MAX 1024
+#define SYMLOOP_MAX 40
+#define WORD_BIT 32
+#define SSIZE_MAX LONG_MAX
#define TZNAME_MAX 6
-#define TTY_NAME_MAX 20
+#define TTY_NAME_MAX 32
#define HOST_NAME_MAX 255
+#if LONG_MAX == 0x7fffffffL
+#define LONG_BIT 32
+#else
+#define LONG_BIT 64
+#endif
+
/* Implementation choices... */
-#define PTHREAD_KEYS_MAX 1024
-#define PTHREAD_STACK_MIN (2*PAGE_SIZE)
+#define PTHREAD_KEYS_MAX 128
+#define PTHREAD_STACK_MIN 2048
+#define PTHREAD_DESTRUCTOR_ITERATIONS 4
+#define SEM_VALUE_MAX 0x7fffffff
+#define SEM_NSEMS_MAX 256
+#define DELAYTIMER_MAX 0x7fffffff
+#define MQ_PRIO_MAX 32768
+#define LOGIN_NAME_MAX 256
/* Arbitrary numbers... */
#define RE_DUP_MAX 255
#define NL_ARGMAX 9
-#define NL_LANGMAX 32
#define NL_MSGMAX 32767
-#define NL_NMAX (MB_LEN_MAX*4)
#define NL_SETMAX 255
#define NL_TEXTMAX 2048
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_XOPEN_SOURCE)
+
+#ifdef PAGESIZE
+#define PAGE_SIZE PAGESIZE
+#endif
+#define NZERO 20
+#define NL_LANGMAX 32
+
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
+ || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
+
+#define NL_NMAX 16
+
+#endif
+
/* POSIX/SUS requirements follow. These numbers come directly
* from SUS and have nothing to do with the host system. */
#define _POSIX_AIO_MAX 1
#define _POSIX_ARG_MAX 4096
#define _POSIX_CHILD_MAX 25
+#define _POSIX_CLOCKRES_MIN 20000000
#define _POSIX_DELAYTIMER_MAX 32
#define _POSIX_HOST_NAME_MAX 255
#define _POSIX_LINK_MAX 8