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/*

FUNCTION

        <<strerror_r>>---convert error number to string and copy to buffer

INDEX

        strerror_r

ANSI_SYNOPSIS

        #include <string.h>

        char *strerror_r(int <[errnum]>, char *<[buffer]>, size_t <[n]>);

TRAD_SYNOPSIS

        #include <string.h>

        char *strerror_r(<[errnum]>, <[buffer]>, <[n]>)

        int <[errnum]>;

        char *<[buffer]>;

        size_t <[n]>;

DESCRIPTION

<<strerror_r>> converts the error number <[errnum]> into a

string and copies the result into the supplied <[buffer]> for

a length up to <[n]>, including the NUL terminator. The value of

<[errnum]> is usually a copy of <<errno>>.  If <<errnum>> is not a known

error number, the result is the empty string.

See <<strerror>> for how strings are mapped to <<errnum>>.

RETURNS

This function returns a pointer to a string.  Your application must

not modify that string.

PORTABILITY

<<strerror_r>> is a GNU extension.

<<strerror_r>> requires no supporting OS subroutines.

*/

#undef __STRICT_ANSI__

#include <errno.h>

#include <string.h>

char *

_DEFUN (strerror_r, (errnum, buffer, n),

        int errnum _AND

        char *buffer _AND

        size_t n)

{

  char *error;

  error = strerror (errnum);

  return strncpy (buffer, (const char *)error, n);

}