1 .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
3 .\" %%%LICENSE_START(VERBATIM)
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13 .\" Since the Linux kernel and libraries are constantly changing, this
14 .\" manual page may be incorrect or out-of-date. The author(s) assume no
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21 .\" Formatted or processed versions of this manual, if unaccompanied by
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25 .\" References consulted:
26 .\" Linux libc source code
27 .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
29 .\" Modified Sat Jul 24 18:45:17 1993 by Rik Faith (faith@cs.unc.edu)
30 .TH PSIGNAL 3 2010-10-06 "GNU" "Linux Programmer's Manual"
32 psignal, psiginfo \- print signal message
35 .B #include <signal.h>
37 .BI "void psignal(int " sig ", const char *" s );
38 .BI "void psiginfo(const siginfo_t *" pinfo ", const char *" s );
40 .BI "extern const char *const " sys_siglist [];
44 Feature Test Macro Requirements for glibc (see
45 .BR feature_test_macros (7)):
49 _SVID_SOURCE || _BSD_SOURCE
52 _XOPEN_SOURCE\ >=\ 700 || _POSIX_C_SOURCE\ >=\ 200809L
59 function displays a message on \fIstderr\fP
60 consisting of the string \fIs\fP, a colon, a space, a string
61 describing the signal number \fIsig\fP, and a trailing newline.
62 If the string \fIs\fP is NULL or empty, the colon and space are omitted.
63 If \fIsig\fP is invalid,
64 the message displayed will indicate an unknown signal.
70 except that it displays information about the signal described by
72 which should point to a valid
75 As well as the signal description,
77 displays information about the origin of the signal,
78 and other information relevant to the signal
79 (e.g., the relevant memory address for hardware-generated signals,
80 the child process ID for
82 and the user ID and process ID of the sender, for signals set using
87 The array \fIsys_siglist\fP holds the signal description strings
88 indexed by signal number.
94 functions return no value.
98 function was added to glibc in version 2.10.
100 POSIX.1-2008, 4.3BSD.
102 In glibc versions up to 2.12,
104 had the following bugs:
106 In some circumstances, a trailing newline is not printed.
107 .\" FIXME . http://sourceware.org/bugzilla/show_bug.cgi?id=12107
108 .\" Reportedly now fixed; check glibc 2.13
110 Additional details are not displayed for real-time signals.
111 .\" FIXME . http://sourceware.org/bugzilla/show_bug.cgi?id=12108
112 .\" Reportedly now fixed; check glibc 2.13