PSIGNAL(3)               BSD Library Functions Manual               PSIGNAL(3)

NAME
     psignal, strsignal, syssiglist, syssigname -- system signal messages

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##include <>

     void
     psignal(unsigned sig, const char *s);

     extern const char * const syssiglist[];
     extern const char * const syssigname[];

     ##include <>

     char *
     strsignal(int sig);

DESCRIPTION
     The psignal() and strsignal() functions locate the descriptive message
     string for a signal number.

     The strsignal() function accepts a signal number argument sig and returns
     a pointer to the corresponding message string.

     The psignal() function accepts a signal number argument sig and writes it
     to the standard error.  If the argument s is non-NUL and does not point
     to the null character, s is written to the standard error file descriptor
     prior to the message string, immediately followed by a colon and a space.
     If the signal number is not recognized (sigaction(2)), the string
     ``Unknown signal'' is produced.

     The message strings can be accessed directly through the external array
     syssiglist, indexed by recognized signal numbers.  The external array
     syssigname is used similarly and contains short, lower-case abbrevia-
     tions for signals which are useful for recognizing signal names in user
     input.  The defined variable NSIG contains a count of the strings in
     syssiglist and syssigname.

SEE ALSO
     sigaction(2), perror(3), strerror(3)

HISTORY
     The psignal() function appeared in 4.2BSD.

BSD                            February 27, 1995                           BSD