Claim to be 1003.1-2001. We're not quite, yet, but that's a more useful
target than any pre-C99 POSIX (which we could never have conformed to under our ia32 ABI). Document why HOST_NAME_MAX (and hopefully other similar constants in the future) is not defined. Define in <sys/unistd.h> all 1003.1-2001 option and option group constants which did not meet the standard for inclusion in <unistd.h>. Delete from <sys/unistd.h> all sysconf(3) constants and those option constants which were moved to <unistd.h>. pathconf(3) keys remain here as pathconf() is implemented directly as a system call. Add a comment noting brokenness in some .1e additions here. Fix whitespace in definition of constants for rfork(). (5 of 5)
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wollman
parent
6f001fdc5c
commit
fce090c17d
@ -69,12 +69,6 @@
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#else
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/* Default to existing user space version.
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*/
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#ifndef _POSIX_VERSION
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#define _POSIX_VERSION 199009L
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#endif
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/* Test for visibility of P1003.1B features:
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* If _POSIX_SOURCE and POSIX_C_SOURCE are completely undefined
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* they show up.
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@ -53,6 +53,7 @@
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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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@ -62,4 +63,10 @@
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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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*/
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#endif
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223
sys/sys/unistd.h
223
sys/sys/unistd.h
@ -37,56 +37,64 @@
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#ifndef _SYS_UNISTD_H_
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#define _SYS_UNISTD_H_
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#include <sys/_posix.h>
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#include <sys/cdefs.h>
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/* compile-time symbolic constants */
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#define _POSIX_JOB_CONTROL /* implementation supports job control */
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/*
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* POSIX options and option groups we unconditionally do or don't
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* implement. Those options which are implemented (or not) entirely
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* in user mode are defined in <unistd.h>. Please keep this list in
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* alphabetical order.
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*
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* Anything which is defined as zero below **must** have an
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* implementation for the corresponding sysconf() which is able to
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* determine conclusively whether or not the feature is supported.
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* Anything which is defined as other than -1 below **must** have
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* complete headers, types, and function declarations as specified by
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* the POSIX standard; however, if the relevant sysconf() function
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* returns -1, the functions may be stubbed out.
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*/
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#define _POSIX_ADVISORY_INFO -1
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#define _POSIX_ASYNCHRONOUS_IO 0
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#define _POSIX_CHOWN_RESTRICTED 1
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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_JOB_CONTROL 1
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#define _POSIX_MAPPED_FILES 200112L
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#define _POSIX_MEMLOCK -1
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#define _POSIX_MEMLOCK_RANGE 200112L
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#define _POSIX_MEMORY_PROTECTION 200112L
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#define _POSIX_MESSAGE_PASSING -1
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#define _POSIX_MONOTONIC_CLOCK -1
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#define _POSIX_NO_TRUNC 1
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#define _POSIX_PRIORITIZED_IO -1
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#define _POSIX_PRIORITY_SCHEDULING 200112L
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#define _POSIX_RAW_SOCKETS 200112L
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#define _POSIX_REALTIME_SIGNALS -1
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#define _POSIX_SEMAPHORES -1
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#define _POSIX_SHARED_MEMORY_OBJECTS 200112L
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#define _POSIX_SPORADIC_SERVER -1
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#define _POSIX_SYNCHRONIZED_IO -1
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#define _POSIX_TIMEOUTS -1
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#define _POSIX_TYPED_MEMORY_OBJECTS -1
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#define _POSIX_VDISABLE 0xff
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#if __XSI_VISIBLE
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#define _XOPEN_SHM 1
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#define _XOPEN_STREAMS -1
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#endif
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/*
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* Although we have saved user/group IDs, we do not use them in setuid
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* as described in POSIX 1003.1, because the feature does not work for
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* root. We use the saved IDs in seteuid/setegid, which are not currently
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* part of the POSIX 1003.1 specification.
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* part of the POSIX 1003.1 specification. XXX revisit for 1003.1-2001
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* as this is now mandatory.
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*/
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#ifdef _NOT_AVAILABLE
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#define _POSIX_SAVED_IDS /* saved set-user-ID and set-group-ID */
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#define _POSIX_SAVED_IDS 1 /* saved set-user-ID and set-group-ID */
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#endif
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#define _POSIX2_VERSION 199212L
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/* execution-time symbolic constants */
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/* chown requires appropriate privileges */
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#define _POSIX_CHOWN_RESTRICTED 1
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/* too-long path components generate errors */
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#define _POSIX_NO_TRUNC 1
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/* may disable terminal special characters */
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#define _POSIX_VDISABLE 0xff
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/*
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* Threads features:
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*
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* Note that those commented out are not currently supported by the
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* implementation.
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*/
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#define _POSIX_THREADS
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#define _POSIX_THREAD_ATTR_STACKADDR
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#define _POSIX_THREAD_ATTR_STACKSIZE
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#define _POSIX_THREAD_PRIORITY_SCHEDULING
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#define _POSIX_THREAD_PRIO_INHERIT
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#define _POSIX_THREAD_PRIO_PROTECT
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/* #define _POSIX_THREAD_PROCESS_SHARED */
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/*
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* 1003.1c-1995 says on page 38 (2.9.3, paragraph 3) that if _POSIX_THREADS is
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* defined, then _POSIX_THREAD_SAFE_FUNCTIONS must also be defined. (This is
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* likely a typo (reversed dependency), in which case we would be compliant if
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* the typo were officially acknowledged.) However, we do not support all of
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* the required _r() interfaces, which means we cannot legitimately define
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* _POSIX_THREAD_SAFE_FUNCTIONS. Therefore, we are non-compliant here in two
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* ways.
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*/
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/* #define _POSIX_THREAD_SAFE_FUNCTIONS */
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#define _POSIX_SEMAPHORES
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/* access function */
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#define F_OK 0 /* test for existence of file */
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#define X_OK 0x01 /* test for execute or search permission */
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@ -116,127 +124,54 @@
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#define _PC_NO_TRUNC 8
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#define _PC_VDISABLE 9
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/* configurable system variables */
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#define _SC_ARG_MAX 1
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#define _SC_CHILD_MAX 2
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#define _SC_CLK_TCK 3
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#define _SC_NGROUPS_MAX 4
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#define _SC_OPEN_MAX 5
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#define _SC_JOB_CONTROL 6
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#define _SC_SAVED_IDS 7
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#define _SC_VERSION 8
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#define _SC_BC_BASE_MAX 9
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#define _SC_BC_DIM_MAX 10
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#define _SC_BC_SCALE_MAX 11
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#define _SC_BC_STRING_MAX 12
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#define _SC_COLL_WEIGHTS_MAX 13
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#define _SC_EXPR_NEST_MAX 14
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#define _SC_LINE_MAX 15
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#define _SC_RE_DUP_MAX 16
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#define _SC_2_VERSION 17
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#define _SC_2_C_BIND 18
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#define _SC_2_C_DEV 19
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#define _SC_2_CHAR_TERM 20
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#define _SC_2_FORT_DEV 21
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#define _SC_2_FORT_RUN 22
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#define _SC_2_LOCALEDEF 23
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#define _SC_2_SW_DEV 24
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#define _SC_2_UPE 25
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#define _SC_STREAM_MAX 26
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#define _SC_TZNAME_MAX 27
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#ifdef _P1003_1B_VISIBLE
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#define _POSIX_PRIORITY_SCHEDULING
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#if 0
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/* Not until the dust settles after the header commit
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*/
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#define _POSIX_ASYNCHRONOUS_IO
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#define _POSIX_MEMLOCK
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#define _POSIX_MEMLOCK_RANGE
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#endif
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#define _POSIX_FSYNC 200112L
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#define _POSIX_MAPPED_FILES 200112L
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#define _POSIX_SHARED_MEMORY_OBJECTS 200112L
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/* POSIX.1B sysconf options */
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#define _SC_ASYNCHRONOUS_IO 28
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#define _SC_MAPPED_FILES 29
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#define _SC_MEMLOCK 30
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#define _SC_MEMLOCK_RANGE 31
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#define _SC_MEMORY_PROTECTION 32
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#define _SC_MESSAGE_PASSING 33
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#define _SC_PRIORITIZED_IO 34
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#define _SC_PRIORITY_SCHEDULING 35
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#define _SC_REALTIME_SIGNALS 36
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#define _SC_SEMAPHORES 37
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#define _SC_FSYNC 38
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#define _SC_SHARED_MEMORY_OBJECTS 39
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#define _SC_SYNCHRONIZED_IO 40
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#define _SC_TIMERS 41
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#define _SC_AIO_LISTIO_MAX 42
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#define _SC_AIO_MAX 43
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#define _SC_AIO_PRIO_DELTA_MAX 44
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#define _SC_DELAYTIMER_MAX 45
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#define _SC_MQ_OPEN_MAX 46
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#define _SC_PAGESIZE 47
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#define _SC_RTSIG_MAX 48
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#define _SC_SEM_NSEMS_MAX 49
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#define _SC_SEM_VALUE_MAX 50
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#define _SC_SIGQUEUE_MAX 51
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#define _SC_TIMER_MAX 52
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/* POSIX.1B pathconf and fpathconf options */
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#if __POSIX_VISIBLE >= 199309
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#define _PC_ASYNC_IO 53
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#define _PC_PRIO_IO 54
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#define _PC_SYNC_IO 55
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#endif
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#endif /* _P1003_1B_VISIBLE */
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#if __POSIX_VISIBLE >= 200112
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#define _PC_ALLOC_SIZE_MIN 10
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#define _PC_FILESIZEBITS 12
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#define _PC_REC_INCR_XFER_SIZE 14
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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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#endif
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#define _SC_IOV_MAX 56
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#ifndef _POSIX_SOURCE
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/* Linux/Solaris/AIX/SVR4.0MP API */
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#define _SC_NPROCESSORS_CONF 57
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#define _SC_NPROCESSORS_ONLN 58
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#endif /* !_POSIX_SOURCE */
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/* POSIX.1e pathconf and fpathconf options */
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#if __BSD_VISIBLE
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/* XXX: These symbols are in the WRONG namespace (should be _PC_*). */
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#define _POSIX_ACL_EXTENDED 59
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#define _POSIX_ACL_PATH_MAX 60
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#define _POSIX_ACL_CAP_PRESENT 61
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#define _POSIX_INF_PRESENT 62
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#define _POSIX_MAC_PRESENT 63
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#endif
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#ifndef _POSIX_SOURCE
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#if __BSD_VISIBLE
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/*
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* rfork() options.
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*
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* XXX currently, some operations without RFPROC set are not supported.
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*/
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#define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */
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#define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */
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#define RFFDG (1<<2) /* copy fd table */
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#define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */
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#define RFPROC (1<<4) /* change child (else changes curproc) */
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#define RFMEM (1<<5) /* share `address space' */
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#define RFNOWAIT (1<<6) /* give child to init */
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#define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */
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#define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */
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#define RFCFDG (1<<12) /* close all fds, zero fd table */
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#define RFTHREAD (1<<13) /* enable kernel thread support */
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#define RFSIGSHARE (1<<14) /* share signal handlers */
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#define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */
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#define RFSTOPPED (1<<17) /* leave child in a stopped state */
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#define RFNAMEG (1<<0) /* UNIMPL new plan9 `name space' */
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#define RFENVG (1<<1) /* UNIMPL copy plan9 `env space' */
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#define RFFDG (1<<2) /* copy fd table */
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#define RFNOTEG (1<<3) /* UNIMPL create new plan9 `note group' */
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#define RFPROC (1<<4) /* change child (else changes curproc) */
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#define RFMEM (1<<5) /* share `address space' */
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#define RFNOWAIT (1<<6) /* give child to init */
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#define RFCNAMEG (1<<10) /* UNIMPL zero plan9 `name space' */
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#define RFCENVG (1<<11) /* UNIMPL zero plan9 `env space' */
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#define RFCFDG (1<<12) /* close all fds, zero fd table */
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#define RFTHREAD (1<<13) /* enable kernel thread support */
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#define RFSIGSHARE (1<<14) /* share signal handlers */
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#define RFLINUXTHPN (1<<16) /* do linux clone exit parent notification */
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#define RFSTOPPED (1<<17) /* leave child in a stopped state */
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#define RFHIGHPID (1<<18) /* use a pid higher then 10 (idleproc) */
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#define RFPPWAIT (1<<31) /* parent sleeps until child exits (vfork) */
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#define RFKERNELONLY (RFSTOPPED|RFHIGHPID|RFPPWAIT)
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#define RFPPWAIT (1<<31) /* parent sleeps until child exits (vfork) */
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#define RFKERNELONLY (RFSTOPPED|RFHIGHPID|RFPPWAIT)
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#endif /* !_POSIX_SOURCE */
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#endif /* __BSD_VISIBLE */
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#endif /* !_SYS_UNISTD_H_ */
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