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-'\" t
-.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
-.\" and Copyright (C) 2020 Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.\" References consulted:
-.\" Linux libc source code
-.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
-.\" 386BSD man pages
-.\" Modified Sat Jul 24 17:59:03 1993 by Rik Faith (faith@cs.unc.edu)
-.TH strsignal 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-strsignal, sigabbrev_np, sigdescr_np, sys_siglist \-
-return string describing signal
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <string.h>
-.P
-.BI "char *strsignal(int " sig );
-.BI "const char *sigdescr_np(int " sig );
-.BI "const char *sigabbrev_np(int " sig );
-.P
-.BI "[[deprecated]] extern const char *const " sys_siglist [];
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR sigabbrev_np (),
-.BR sigdescr_np ():
-.nf
- _GNU_SOURCE
-.fi
-.P
-.BR strsignal ():
-.nf
- From glibc 2.10 to glibc 2.31:
- _POSIX_C_SOURCE >= 200809L
- Before glibc 2.10:
- _GNU_SOURCE
-.fi
-.P
-.IR sys_siglist :
-.nf
- Since glibc 2.19:
- _DEFAULT_SOURCE
- glibc 2.19 and earlier:
- _BSD_SOURCE
-.fi
-.SH DESCRIPTION
-The
-.BR strsignal ()
-function returns a string describing the signal
-number passed in the argument
-.IR sig .
-The string can be used only until the next call to
-.BR strsignal ().
-The string returned by
-.BR strsignal ()
-is localized according to the
-.B LC_MESSAGES
-category in the current locale.
-.P
-The
-.BR sigdescr_np ()
-function returns a string describing the signal
-number passed in the argument
-.IR sig .
-Unlike
-.BR strsignal ()
-this string is not influenced by the current locale.
-.P
-The
-.BR sigabbrev_np ()
-function returns the abbreviated name of the signal,
-.IR sig .
-For example, given the value
-.BR SIGINT ,
-it returns the string "INT".
-.P
-The (deprecated) array
-.I sys_siglist
-holds the signal description strings
-indexed by signal number.
-The
-.BR strsignal ()
-or the
-.BR sigdescr_np ()
-function should be used instead of this array; see also VERSIONS.
-.SH RETURN VALUE
-The
-.BR strsignal ()
-function returns the appropriate description
-string, or an unknown signal message if the signal number is invalid.
-On some systems (but not on Linux), NULL may instead be
-returned for an invalid signal number.
-.P
-The
-.BR sigdescr_np ()
-and
-.BR sigabbrev_np ()
-functions return the appropriate description string.
-The returned string is statically allocated and valid for
-the lifetime of the program.
-These functions return NULL for an invalid signal number.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lb lb lbx
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR strsignal ()
-T} Thread safety T{
-.na
-.nh
-MT-Unsafe race:strsignal locale
-T}
-T{
-.na
-.nh
-.BR sigdescr_np (),
-.BR sigabbrev_np ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-.TP
-.BR strsignal ()
-POSIX.1-2008.
-.TP
-.BR sigdescr_np ()
-.TQ
-.BR sigabbrev_np ()
-GNU.
-.TP
-.I sys_siglist
-None.
-.\" glibc commit b1ccfc061feee9ce616444ded8e1cd5acf9fa97f
-.SH HISTORY
-.TP
-.BR strsignal ()
-POSIX.1-2008.
-Solaris, BSD.
-.TP
-.BR sigdescr_np ()
-.TQ
-.BR sigabbrev_np ()
-glibc 2.32.
-.TP
-.I sys_siglist
-Removed in glibc 2.32.
-.SH NOTES
-.BR sigdescr_np ()
-and
-.BR sigabbrev_np ()
-are thread-safe and async-signal-safe.
-.SH SEE ALSO
-.BR psignal (3),
-.BR strerror (3)