Update limits and configuration parameters for 1003.1/TC1/D6.
Implement new sysconf keys. Change the implenentation of _SC_ASYNCHRONOUS_IO in preparation for the next set of changes. Move some limits which had been in <sys/syslimits.h> to <limits.h> where they belong. They had only ever been in syslimits.h to provide for the kernel implementation of the CTL_USER MIB branch, which went away with newsysctl years ago. (There is a #error in <sys/syslimits.h> which I will downgrade in the next commit.)
This commit is contained in:
Garrett Wollman
parent
cd9a4d5d7a
commit
188c541ceb
@ -41,18 +41,27 @@
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#if __POSIX_VISIBLE
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#define _POSIX_ARG_MAX 4096
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#define _POSIX_CHILD_MAX 6
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#define _POSIX_CHILD_MAX 25
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#define _POSIX_LINK_MAX 8
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#define _POSIX_MAX_CANON 255
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#define _POSIX_MAX_INPUT 255
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#define _POSIX_NAME_MAX 14
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#define _POSIX_NGROUPS_MAX 0
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#define _POSIX_OPEN_MAX 16
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#define _POSIX_PATH_MAX 255
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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_SSIZE_MAX 32767
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#define _POSIX_STREAM_MAX 8
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#define _POSIX_TZNAME_MAX 3
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#define _POSIX_TZNAME_MAX 6
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#define BC_BASE_MAX 99 /* max ibase/obase values in bc(1) */
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#define BC_DIM_MAX 2048 /* max array elements in bc(1) */
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#define BC_SCALE_MAX 99 /* max scale value in bc(1) */
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#define BC_STRING_MAX 1000 /* max const string length in bc(1) */
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#define COLL_WEIGHTS_MAX 0 /* max weights for order keyword */
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#define EXPR_NEST_MAX 32 /* max expressions nested in expr(1) */
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#define LINE_MAX 2048 /* max bytes in an input line */
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#define RE_DUP_MAX 255 /* max RE's in interval notation */
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#define _POSIX2_BC_BASE_MAX 99
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#define _POSIX2_BC_DIM_MAX 2048
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@ -70,19 +79,40 @@
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#define _POSIX_DELAYTIMER_MAX 32
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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_RTSIG_MAX 0
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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_TIMER_MAX 32
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#endif
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#if __POSIX_VISIBLE >= 199506
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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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#endif
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#if __POSIX_VISIBLE >= 200112
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#define _POSIX_HOST_NAME_MAX 255
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#define _POSIX_LOGIN_NAME_MAX 9
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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_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 _POSIX2_CHARCLASS_NAME_MAX 14
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#define _POSIX2_COLL_WEIGHTS_MAX 2
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#define _POSIX_RE_DUP_MAX _POSIX2_RE_DUP_MAX
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#endif
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#if __XSI_VISIBLE
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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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#define PASS_MAX 128 /* _PASSWORD_LEN from <pwd.h> */
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#define NL_ARGMAX 99 /* max # of position args for printf */
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@ -260,6 +260,9 @@ typedef __uid_t_ uid_t;
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#define _SC_V6_ILP32_OFFBIG 104 /* user */
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#define _SC_V6_LP64_OFF64 105 /* user */
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#define _SC_V6_LPBIG_OFFBIG 106 /* user */
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#define _SC_IPV6 118
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#define _SC_RAW_SOCKETS 119
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#define _SC_SYMLOOP_MAX 120
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#endif
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#if __XSI_VISIBLE
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@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$");
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#include <sys/time.h>
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#include <sys/sysctl.h>
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#include <sys/resource.h>
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#include <sys/socket.h>
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#include <errno.h>
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#include <limits.h>
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@ -176,9 +177,13 @@ sysconf(name)
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return (value);
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case _SC_ASYNCHRONOUS_IO:
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#if _POSIX_ASYNCHRONOUS_IO == 0
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mib[0] = CTL_P1003_1B;
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mib[1] = CTL_P1003_1B_ASYNCHRONOUS_IO;
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goto yesno;
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break;
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#else
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return (_POSIX_ASYNCHRONOUS_IO);
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#endif
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case _SC_MAPPED_FILES:
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return (_POSIX_MAPPED_FILES);
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case _SC_MEMLOCK:
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@ -545,6 +550,23 @@ yesno: if (sysctl(mib, 2, &value, &len, NULL, 0) == -1)
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case _SC_XOPEN_XCU_VERSION:
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return (_XOPEN_XCU_VERSION);
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#endif
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case _SC_SYMLOOP_MAX:
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return (MAXSYMLINKS);
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case _SC_RAW_SOCKETS:
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return (_POSIX_RAW_SOCKETS);
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case _SC_IPV6:
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#if _POSIX_IPV6 == 0
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sverrno = errno;
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value = socket(PF_INET6, SOCK_DGRAM, 0);
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errno = sverrno;
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if (value >= 0) {
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close(value);
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return (200112L);
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} else
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return (0);
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#else
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return (_POSIX_IPV6);
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#endif
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case _SC_NPROCESSORS_CONF:
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case _SC_NPROCESSORS_ONLN:
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@ -37,6 +37,14 @@
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#ifndef _SYS_SYSLIMITS_H_
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#define _SYS_SYSLIMITS_H_
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#if !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_)
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#error "No user-serviceable parts inside."
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#endif
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/*
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* Do not add any new variables here. (See the comment at the end of
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* the file for why.)
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*/
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#define ARG_MAX 65536 /* max bytes for an exec function */
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#ifndef CHILD_MAX
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#define CHILD_MAX 40 /* max simultaneous processes */
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@ -53,20 +61,14 @@
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#define PIPE_BUF 512 /* max bytes for atomic pipe writes */
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#define IOV_MAX 1024 /* max elements in i/o vector */
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/* XXX - these don't belong here */
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#define BC_BASE_MAX 99 /* max ibase/obase values in bc(1) */
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#define BC_DIM_MAX 2048 /* max array elements in bc(1) */
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#define BC_SCALE_MAX 99 /* max scale value in bc(1) */
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#define BC_STRING_MAX 1000 /* max const string length in bc(1) */
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#define COLL_WEIGHTS_MAX 0 /* max weights for order keyword */
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#define EXPR_NEST_MAX 32 /* max expressions nested in expr(1) */
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#define LINE_MAX 2048 /* max bytes in an input line */
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#define RE_DUP_MAX 255 /* max RE's in interval notation */
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/*
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* We leave the following values undefined to force applications to either
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* assume conservative values or call sysconf() to get the current value.
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*
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* HOST_NAME_MAX
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* LOGIN_NAME_MAX
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*
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* (We should do this for most of the values currently defined here,
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* but many programs are not prepared to deal with this yet.)
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*/
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#endif
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@ -59,6 +59,7 @@
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#define _POSIX_CLOCK_SELECTION -1
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#define _POSIX_CPUTIME -1
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#define _POSIX_FSYNC 200112L
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#define _POSIX_IPV6 0
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#define _POSIX_JOB_CONTROL 1
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#define _POSIX_MAPPED_FILES 200112L
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#define _POSIX_MEMLOCK -1
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@ -142,6 +143,7 @@
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#define _PC_REC_MAX_XFER_SIZE 15
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#define _PC_REC_MIN_XFER_SIZE 16
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#define _PC_REC_XFER_ALIGN 17
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#define _PC_SYMLINK_MAX 18
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#endif
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#if __BSD_VISIBLE
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