@c Define common macros used to keep phrasing consistent in the manual. @ifclear MACROS @set MACROS @c Names used to refer to the library, as noun phrases at the start or @c not at the start of a sentence. @macro Theglibc The GNU C Library @end macro @macro theglibc the GNU C Library @end macro @c Name used to refer to the library as an adjective. @macro glibcadj GNU C Library @end macro @c Description applying to all GNU systems; that is, used in @c describing a property of a system such that no system without that @c property would be considered a variant of the GNU system. @macro gnusystems GNU systems @end macro @c Systems that are not GNU systems. @macro nongnusystems non-GNU systems @end macro @c Description applying to GNU/Linux and GNU/Hurd systems, but not @c necessarily to other variants of the GNU system. @macro gnulinuxhurdsystems GNU/Linux and GNU/Hurd systems @end macro @c Description applying to GNU/Hurd systems; that is, systems using the @c GNU Hurd with the GNU C Library. @macro gnuhurdsystems GNU/Hurd systems @end macro @c Description applying to GNU/Linux systems; that is, systems using @c the Linux kernel with the GNU C Library. @macro gnulinuxsystems GNU/Linux systems @end macro @c Document the safety functions as preliminary. It does NOT expand its @c comments. @macro prelim {comments} Preliminary: @end macro @c Document a function as thread safe. @macro mtsafe {comments} | MT-Safe \comments\ @end macro @c Document a function as thread unsafe. @macro mtunsafe {comments} | MT-Unsafe \comments\ @end macro @c Document a function as safe for use in asynchronous signal handlers. @macro assafe {comments} | AS-Safe \comments\ @end macro @c Document a function as unsafe for use in asynchronous signal @c handlers. This distinguishes unmarked functions, for which this @c property has not been assessed, from those that have been analyzed. @macro asunsafe {comments} | AS-Unsafe \comments\ @end macro @c Document a function as safe for use when asynchronous cancellation is @c enabled. @macro acsafe {comments} | AC-Safe \comments\ @end macro @c Document a function as unsafe for use when asynchronous cancellation @c is enabled. This distinguishes unmarked functions, for which this @c property has not been assessed, from those that have been analyzed. @macro acunsafe {comments} | AC-Unsafe \comments\ @end macro @c Format safety properties without referencing the section of the @c definitions. To be used in the definitions of the properties @c themselves. @macro sampsafety {notes} @noindent \notes\| @end macro @c Format the safety properties of a function. @macro safety {notes} \notes\| @xref{POSIX Safety Concepts}. @end macro @c Function is MT- and AS-Unsafe due to an internal race. @macro mtasurace {comments} race\comments\ @end macro @c Function is AS-Unsafe due to an internal race. @macro asurace {comments} race\comments\ @end macro @c Function is MT-Safe, but with potential race on user-supplied object @c of opaque type. @macro mtsrace {comments} race\comments\ @end macro @c Function is MT- and AS-Unsafe for modifying an object that is decreed @c MT-constant due to MT-Unsafe accesses elsewhere. @macro mtasuconst {comments} const\comments\ @end macro @c Function accesses the assumed-constant locale object. @macro mtslocale {comments} locale\comments\ @end macro @c Function accesses the assumed-constant environment. @macro mtsenv {comments} env\comments\ @end macro @c Function accesses the assumed-constant hostid. @macro mtshostid {comments} hostid\comments\ @end macro @c Function accesses the assumed-constant _sigintr variable. @macro mtssigintr {comments} sigintr\comments\ @end macro @c Function performs MT-Unsafe initialization at the first call. @macro mtuinit {comments} init\comments\ @end macro @c Function performs libc_once AS-Unsafe initialization. @macro asuinit {comments} init\comments\ @end macro @c Function performs libc_once AC-Unsafe initialization. @macro acuinit {comments} init\comments\ @end macro @c Function is AS-Unsafe because it takes a non-recursive mutex that may @c already be held by the function interrupted by the signal. @macro asulock {comments} lock\comments\ @end macro @c Function is AC-Unsafe because it may fail to release a mutex. @macro aculock {comments} lock\comments\ @end macro @c Function is AS-Unsafe because some data structure may be inconsistent @c due to an ongoing updated interrupted by a signal. @macro asucorrupt {comments} corrupt\comments\ @end macro @c Function is AC-Unsafe because some data structure may be left @c inconsistent when cancelled. @macro acucorrupt {comments} corrupt\comments\ @end macro @c Function is AS- and AC-Unsafe because of malloc/free. @macro ascuheap {comments} heap\comments\ @end macro @c Function is AS-Unsafe because of malloc/free. @macro asuheap {comments} heap\comments\ @end macro @c Function is AS- and AC-Unsafe because of dlopen/dlclose. @macro ascudlopen {comments} dlopen\comments\ @end macro @c Function is AS- and AC-Unsafe because of unknown plugins. @macro ascuplugin {comments} plugin\comments\ @end macro @c Function is AS- and AC-Unsafe because of i18n. @macro ascuintl {comments} i18n\comments\ @end macro @c Function is AS--Unsafe because of i18n. @macro asuintl {comments} i18n\comments\ @end macro @c Function may leak file descriptors if async-cancelled. @macro acsfd {comments} fd\comments\ @end macro @c Function may leak memory if async-cancelled. @macro acsmem {comments} mem\comments\ @end macro @c Function is unsafe due to temporary overriding a signal handler. @macro mtascusig {comments} sig\comments\ @end macro @c Function is MT- and AS-Unsafe due to temporarily changing attributes @c of the controlling terminal. @macro mtasuterm {comments} term\comments\ @end macro @c Function is AC-Unsafe for failing to restore attributes of the @c controlling terminal. @macro acuterm {comments} term\comments\ @end macro @c Function sets timers atomically. @macro mtstimer {comments} timer\comments\ @end macro @c Function sets and restores timers. @macro mtascutimer {comments} timer\comments\ @end macro @c Function temporarily changes the current working directory. @macro mtasscwd {comments} cwd\comments\ @end macro @c Function may fail to restore to the original current working @c directory after temporarily changing it. @macro acscwd {comments} cwd\comments\ @end macro @c Function is MT-Safe while POSIX says it needn't be MT-Safe. @macro mtsposix {comments} !posix\comments\ @end macro @c Function is MT-Unsafe while POSIX says it should be MT-Safe. @macro mtuposix {comments} !posix\comments\ @end macro @c Function is AS-Safe while POSIX says it needn't be AS-Safe. @macro assposix {comments} !posix\comments\ @end macro @c Function is AS-Unsafe while POSIX says it should be AS-Safe. @macro asuposix {comments} !posix\comments\ @end macro @c Function is AC-Safe while POSIX says it needn't be AC-Safe. @macro acsposix {comments} !posix\comments\ @end macro @c Function is AC-Unsafe while POSIX says it should be AC-Safe. @macro acuposix {comments} !posix\comments\ @end macro @iftex @macro twoexp{exp} @math{2^{{\exp\}}} @end macro @end iftex @ifnottex @macro twoexp{exp} 2^\exp\ @end macro @end ifnottex @c Used by errlist.awk and errnos.awk to generate other files. @c Note that error values have ABI implications for the Hurd. @macro errno {err, val, str} @cindex \str\ ``\str\.'' @end macro @c Dummy placeholder while converting annotations. @c For details on expected use, see `summary.pl --help'. @macro standards {standard, header} @end macro @c To be used for @*x lists of elements. @macro standardsx {element, standard, header} @end macro @macro manpageurl {func, sec} @url{https://man7.org/linux/man-pages/man\sec\/\func\.\sec\.html} @end macro @macro manpagefunctionstub {func,sec} This documentation is a stub. For additional information on this function, consult the manual page @manpageurl{\func\,\sec\}. @xref{Linux Kernel}. @end macro @end ifclear