mirror of https://github.com/mkerrisk/man-pages
90 lines
2.6 KiB
Groff
90 lines
2.6 KiB
Groff
.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
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.\"
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.\" %%%LICENSE_START(VERBATIM)
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\" %%%LICENSE_END
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.\"
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.\" References consulted:
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.\" Linux libc source code
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.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
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.\" 386BSD man pages
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.\" Modified Sat Jul 24 17:59:03 1993 by Rik Faith (faith@cs.unc.edu)
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.TH STRSIGNAL 3 2010-09-15 "GNU" "Linux Programmer's Manual"
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.SH NAME
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strsignal \- return string describing signal
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.SH SYNOPSIS
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.nf
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.B #include <string.h>
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.sp
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.BI "char *strsignal(int " sig );
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.sp
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.BI "extern const char * const " sys_siglist [];
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.fi
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.sp
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.in -4n
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Feature Test Macro Requirements for glibc (see
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.BR feature_test_macros (7)):
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.in
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.sp
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.BR strsignal ():
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.PD 0
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.ad l
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.RS 4
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.TP 4
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Since glibc 2.10:
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_XOPEN_SOURCE\ >=\ 700 || _POSIX_C_SOURCE\ >=\ 200809L
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.TP
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Before glibc 2.10:
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_GNU_SOURCE
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.RE
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.ad
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.PD
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.SH DESCRIPTION
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The
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.BR strsignal ()
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function returns a string describing the signal
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number passed in the argument
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.IR sig .
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The string can be used only until the next call to
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.BR strsignal ().
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.PP
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The array
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.I sys_siglist
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holds the signal description strings
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indexed by signal number.
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The
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.BR strsignal ()
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function should be
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used if possible instead of this array.
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.SH RETURN VALUE
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The
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.BR strsignal ()
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function returns the appropriate description
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string, or an unknown signal message if the signal number is invalid.
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On some systems (but not on Linux), a NULL pointer may be
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returned instead for an invalid signal number.
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.SH CONFORMING TO
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POSIX.1-2008.
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Present on Solaris and the BSDs.
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.SH SEE ALSO
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.BR psignal (3),
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.BR strerror (3)
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