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/* Copyright 2002, 2011 Red Hat Inc. */
/*
FUNCTION
<<psignal>>---print a signal message on standard error
INDEX
psignal
SYNOPSIS
#include <stdio.h>
void psignal(int <[signal]>, const char *<[prefix]>);
DESCRIPTION
Use <<psignal>> to print (on standard error) a signal message
corresponding to the value of the signal number <[signal]>.
Unless you use <<NULL>> as the value of the argument <[prefix]>, the
signal message will begin with the string at <[prefix]>, followed by a
colon and a space (<<: >>). The remainder of the signal message is one
of the strings described for <<strsignal>>.
RETURNS
<<psignal>> returns no result.
PORTABILITY
POSIX.1-2008 requires <<psignal>>, but the strings issued vary from one
implementation to another.
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
*/
#include <_ansi.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#define WRITE_STR(str) \
{ \
const char *p = (str); \
size_t len = strlen (p); \
while (len) \
{ \
ssize_t len1 = write (fileno (stderr), p, len); \
if (len1 < 0) \
break; \
len -= len1; \
p += len1; \
} \
}
void
psignal (int sig,
const char *s)
{
fflush (stderr);
if (s != NULL && *s != '\0')
{
WRITE_STR (s);
WRITE_STR (": ");
}
WRITE_STR (strsignal (sig));
#ifdef __SCLE
WRITE_STR ((stderr->_flags & __SCLE) ? "\r\n" : "\n");
#else
WRITE_STR ("\n");
#endif
}
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