Define constants for those POSIX options and option groups which are
(or would be) implemented (or not) exclusively in user-land. A threads expert should check over the values I have set to make sure that they correctly reflect reality. Move all sysconf() keys here from <sys/unistd.h> as they are not implemented in the kernel. Add new keys from 1003.1-2001 final text. (Some additional keys are expected in TC1.) Add some protection against redundant declarations between <stdlib.h> and <unistd.h> for some functions which XSI requires in the former and BSD traditionally declares in the latter. Restrict qualifiers and other changes from 1003.1-2001 have not been made to the functions prototyped here. (3 of 5)
This commit is contained in:
Garrett Wollman
parent
3ecc48e2ea
commit
ffb1998145
255
include/unistd.h
255
include/unistd.h
@ -81,6 +81,230 @@ typedef __uid_t_ uid_t;
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#define F_TEST 3 /* test a section for locks by other procs */
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#endif
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/*
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* POSIX options and option groups we unconditionally do or don't
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* implement. This list includes those options which are exclusively
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* implemented (or not) in user mode. 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_BARRIERS -1
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#define _POSIX_READER_WRITER_LOCKS 200112L
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#define _POSIX_REGEXP 1
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#define _POSIX_SHELL 1
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#define _POSIX_SPAWN -1
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#define _POSIX_SPIN_LOCKS -1
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#define _POSIX_THREAD_ATTR_STACKADDR 200112L
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#define _POSIX_THREAD_ATTR_STACKSIZE 200112L
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#define _POSIX_THREAD_CPUTIME -1
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#define _POSIX_THREAD_PRIO_INHERIT 200112L
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#define _POSIX_THREAD_PRIO_PROTECT 200112L
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#define _POSIX_THREAD_PRIORITY_SCHEDULING 200112L
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#define _POSIX_THREAD_PROCESS_SHARED -1
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#define _POSIX_THREAD_SAFE_FUNCTIONS -1
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#define _POSIX_THREAD_SPORADIC_SERVER -1
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#define _POSIX_THREADS 200112L
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#define _POSIX_TRACE -1
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#define _POSIX_TRACE_EVENT_FILTER -1
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#define _POSIX_TRACE_INHERIT -1
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#define _POSIX_TRACE_LOG -1
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#define _POSIX2_C_BIND 200112L /* mandatory */
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#define _POSIX2_C_DEV -1 /* need c99 utility */
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#define _POSIX2_CHAR_TERM 1
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#define _POSIX2_FORT_DEV -1 /* need fort77 utility */
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#define _POSIX2_FORT_RUN 200112L
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#define _POSIX2_LOCALEDEF -1
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#define _POSIX2_PBS -1
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#define _POSIX2_PBS_ACCOUNTING -1
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#define _POSIX2_PBS_CHECKPOINT -1
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#define _POSIX2_PBS_LOCATE -1
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#define _POSIX2_PBS_MESSAGE -1
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#define _POSIX2_PBS_TRACK -1
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#define _POSIX2_SW_DEV -1 /* XXX ??? */
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#define _POSIX2_UPE 200112L
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#define _V6_ILP32_OFF32 -1
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#define _V6_ILP32_OFFBIG 0
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#define _V6_LP64_OFF64 0
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#define _V6_LPBIG_OFFBIG -1
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#if __XSI_VISIBLE
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#define _XOPEN_CRYPT -1 /* XXX ??? */
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#define _XOPEN_ENH_I18N -1 /* mandatory in XSI */
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#define _XOPEN_LEGACY -1
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#define _XOPEN_REALTIME -1
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#define _XOPEN_REALTIME_THREADS -1
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#define _XOPEN_UNIX -1
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#endif
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/* Define the versions we target for compliance. */
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#define _POSIX_VERSION 200112L
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#define _POSIX2_VERSION 200112L
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/*
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* POSIX-style system configuration variable accessors (for the
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* sysconf function). The kernel does not directly implement the
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* sysconf() interface; rather, a C library stub translates references
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* to sysconf() into calls to sysctl() using a giant switch statement.
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* Those that are marked `user' are implemented entirely in the C
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* library and never query the kernel. pathconf() is implemented
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* directly by the kernel so those are not defined here.
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*/
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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 /* user */
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#define _SC_BC_DIM_MAX 10 /* user */
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#define _SC_BC_SCALE_MAX 11 /* user */
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#define _SC_BC_STRING_MAX 12 /* user */
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#define _SC_COLL_WEIGHTS_MAX 13 /* user */
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#define _SC_EXPR_NEST_MAX 14 /* user */
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#define _SC_LINE_MAX 15 /* user */
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#define _SC_RE_DUP_MAX 16 /* user */
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#define _SC_2_VERSION 17 /* user */
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#define _SC_2_C_BIND 18 /* user */
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#define _SC_2_C_DEV 19 /* user */
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#define _SC_2_CHAR_TERM 20 /* user */
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#define _SC_2_FORT_DEV 21 /* user */
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#define _SC_2_FORT_RUN 22 /* user */
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#define _SC_2_LOCALEDEF 23 /* user */
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#define _SC_2_SW_DEV 24 /* user */
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#define _SC_2_UPE 25 /* user */
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#define _SC_STREAM_MAX 26 /* user */
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#define _SC_TZNAME_MAX 27 /* user */
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#if __POSIX_VISIBLE >= 199309
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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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#endif
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#if __POSIX_VISIBLE >= 200112
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#define _SC_2_PBS 59 /* user */
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#define _SC_2_PBS_ACCOUNTING 60 /* user */
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#define _SC_2_PBS_CHECKPOINT 61 /* user */
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#define _SC_2_PBS_LOCATE 62 /* user */
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#define _SC_2_PBS_MESSAGE 63 /* user */
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#define _SC_2_PBS_TRACK 64 /* user */
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#define _SC_ADVISORY_INFO 65
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#define _SC_BARRIERS 66 /* user */
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#define _SC_CLOCK_SELECTION 67
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#define _SC_CPUTIME 68
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#define _SC_FILE_LOCKING 69
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#define _SC_GETGR_R_SIZE_MAX 70 /* user */
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#define _SC_GETPW_R_SIZE_MAX 71 /* user */
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#define _SC_HOST_NAME_MAX 72
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#define _SC_LOGIN_NAME_MAX 73
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#define _SC_MONOTONIC_CLOCK 74
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#define _SC_MQ_PRIO_MAX 75
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#define _SC_READER_WRITER_LOCKS 76 /* user */
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#define _SC_REGEXP 77 /* user */
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#define _SC_SHELL 78 /* user */
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#define _SC_SPAWN 79 /* user */
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#define _SC_SPIN_LOCKS 80 /* user */
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#define _SC_SPORADIC_SERVER 81
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#define _SC_THREAD_ATTR_STACKADDR 82 /* user */
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#define _SC_THREAD_ATTR_STACKSIZE 83 /* user */
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#define _SC_THREAD_CPUTIME 84 /* user */
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#define _SC_THREAD_DESTRUCTOR_ITERATIONS 85 /* user */
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#define _SC_THREAD_KEYS_MAX 86 /* user */
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#define _SC_THREAD_PRIO_INHERIT 87 /* user */
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#define _SC_THREAD_PRIO_PROTECT 88 /* user */
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#define _SC_THREAD_PRIORITY_SCHEDULING 89 /* user */
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#define _SC_THREAD_PROCESS_SHARED 90 /* user */
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#define _SC_THREAD_SAFE_FUNCTIONS 91 /* user */
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#define _SC_THREAD_SPORADIC_SERVER 92 /* user */
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#define _SC_THREAD_STACK_MIN 93 /* user */
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#define _SC_THREAD_THREADS_MAX 94 /* user */
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#define _SC_TIMEOUTS 95 /* user */
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#define _SC_THREADS 96 /* user */
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#define _SC_TRACE 97 /* user */
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#define _SC_TRACE_EVENT_FILTER 98 /* user */
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#define _SC_TRACE_INHERIT 99 /* user */
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#define _SC_TRACE_LOG 100 /* user */
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#define _SC_TTY_NAME_MAX 101 /* user */
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#define _SC_TYPED_MEMORY_OBJECTS 102
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#define _SC_V6_ILP32_OFF32 103 /* user */
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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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#endif
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#if __XSI_VISIBLE
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#define _SC_ATEXIT_MAX 107 /* user */
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#define _SC_IOV_MAX 56
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#define _SC_PAGE_SIZE _SC_PAGESIZE
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#define _SC_XOPEN_CRYPT 108 /* user */
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#define _SC_XOPEN_ENH_I18N 109 /* user */
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#define _SC_XOPEN_LEGACY 110 /* user */
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#define _SC_XOPEN_REALTIME 111
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#define _SC_XOPEN_REALTIME_THREADS 112
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#define _SC_XOPEN_SHM 113
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#define _SC_XOPEN_STREAMS 114
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#define _SC_XOPEN_UNIX 115
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#define _SC_XOPEN_VERSION 116
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#define _SC_XOPEN_XCU_VERSION 117 /* user */
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#endif
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#if __BSD_VISIBLE
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#define _SC_NPROCESSORS_CONF 57
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#define _SC_NPROCESSORS_ONLN 58
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#endif
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/* Keys for the confstr(3) function. */
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#if __POSIX_VISIBLE >= 199209
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#define _CS_PATH 1 /* default value of PATH */
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#endif
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#if __POSIX_VISIBLE >= 200112
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#define _CS_POSIX_V6_ILP32_OFF32_CFLAGS 2
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#define _CS_POSIX_V6_ILP32_OFF32_LDFLAGS 3
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#define _CS_POSIX_V6_ILP32_OFF32_LIBS 4
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#define _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS 5
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#define _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS 6
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#define _CS_POSIX_V6_ILP32_OFFBIG_LIBS 7
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#define _CS_POSIX_V6_LP64_OFF64_CFLAGS 8
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#define _CS_POSIX_V6_LP64_OFF64_LDFLAGS 9
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#define _CS_POSIX_V6_LP64_OFF64_LIBS 10
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#define _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS 11
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#define _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS 12
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#define _CS_POSIX_V6_LPBIG_OFFBIG_LIBS 13
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#define _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS 14
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#endif
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__BEGIN_DECLS
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/* 1003.1-1990 */
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void _exit(int) __dead2;
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@ -141,8 +365,6 @@ int getopt(int, char * const [], const char *);
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extern char *optarg; /* getopt(3) external variables */
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extern int optind, opterr, optopt;
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#define _CS_PATH 1 /* default value of PATH */
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#endif
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/* ISO/IEC 9945-1: 1996 */
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@ -167,27 +389,12 @@ int fchown(int, uid_t, gid_t);
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int gethostname(char *, int /* socklen_t */);
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int setegid(gid_t);
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int seteuid(uid_t);
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/* X/Open mistake copied by POSIX */
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#define _CS_POSIX_V6_ILP32_OFF32_CFLAGS 2
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#define _CS_POSIX_V6_ILP32_OFF32_LDFLAGS 3
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#define _CS_POSIX_V6_ILP32_OFF32_LIBS 4
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#define _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS 5
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#define _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS 6
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#define _CS_POSIX_V6_ILP32_OFFBIG_LIBS 7
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#define _CS_POSIX_V6_LP64_OFF64_CFLAGS 8
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#define _CS_POSIX_V6_LP64_OFF64_LDFLAGS 9
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#define _CS_POSIX_V6_LP64_OFF64_LIBS 10
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#define _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS 11
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#define _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS 12
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#define _CS_POSIX_V6_LPBIG_OFFBIG_LIBS 13
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#define _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS 14
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#endif
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/*
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* symlink() was originally in POSIX.1a, which was withdrawn after
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* being overtaken by events (1003.1-2001). It was in XPG4.2, and of
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* course has been in BSD practically forever.
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* course has been in BSD since 4.2.
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*/
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#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE >= 402 || __BSD_VISIBLE
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int symlink(const char * __restrict, const char * __restrict);
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@ -254,9 +461,15 @@ int iruserok_sa(const void *, int, int, const char *, const char *);
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int issetugid(void);
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char *mkdtemp(char *);
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int mknod(const char *, mode_t, dev_t);
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#ifndef _MKSTEMP_DECLARED
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int mkstemp(char *);
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#define _MKSTEMP_DECLARED
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#endif
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int mkstemps(char *, int);
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#ifndef _MKTEMP_DECLARED
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char *mktemp(char *);
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#define _MKTEMP_DECLARED
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#endif
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int nfsclnt(int, void *);
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int nfssvc(int, void *);
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int profil(char *, size_t, vm_offset_t, int);
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@ -281,7 +494,10 @@ int setdomainname(const char *, int);
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int setgroups(int, const gid_t *);
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void sethostid(long);
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int sethostname(const char *, int);
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#ifndef _SETKEY_DECLARED
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int setkey(const char *);
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#define _SETKEY_DECLARED
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#endif
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int setlogin(const char *);
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void *setmode(const char *);
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int setresgid(gid_t, gid_t, gid_t);
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@ -299,7 +515,10 @@ int unwhiteout(const char *);
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void *valloc(size_t); /* obsoleted by malloc() */
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extern char *suboptarg; /* getsubopt(3) external variable */
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#ifndef _GETSUBOPT_DECLARED
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int getsubopt(char **, char * const *, char **);
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#define _GETSUBOPT_DECLARED
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#endif
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extern int optreset; /* getopt(3) external variable */
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#endif /* __BSD_VISIBLE */
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__END_DECLS
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