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28 .\" @(#)psignal.3 8.2 (Berkeley) 2/27/95
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31 .Dd September 12, 2019
41 .Nd system signal messages
47 .Fn psignal "int sig" "const char *s"
49 .Fn psiginfo "const siginfo_t *si" "const char *s"
50 .Vt extern const char * const sys_siglist[] ;
51 .Vt extern const char * const sys_signame[] ;
52 .Vt extern const int sys_nsig ;
55 .Fn strsignal "int sig"
61 functions locate the descriptive message
62 string for a signal number.
66 function accepts a signal number argument
68 and returns a pointer to the corresponding message string.
72 function accepts a signal number argument
74 and writes it to the standard error.
79 and does not point to the null character,
81 is written to the standard error file descriptor
82 prior to the message string,
83 immediately followed by a colon and a space.
84 If the signal number is not recognized
92 function is similar to
94 except that the signal number information is taken from the
100 The message strings can be accessed directly
101 through the external array
103 indexed by recognized signal numbers.
106 is used similarly and
107 contains short, lower-case abbreviations for signals
108 which are useful for recognizing signal names
110 The external variable
112 contains a count of the strings in
116 Note that the defined variable
118 will typically be the same as
120 but might be different due to newer or older kernels and newer or
121 older libc libraries. For maximum portability you must use
123 to limit-check the above arrays. Additionally, you should check
126 array entries and generate a generic signal name in those cases.