verr()

write formatted error message to standard error 

Function

SYNOPSIS

#include <err.h>

void verr(int eval, const char *fmt, va_list vargs);

DESCRIPTION

The function verr() writes a formatted error message to the standard error stream, then exits with the specified exit value. The first part of the output line sent to standard error consists of the file name of the executable, followed by a colon and a space. If the value of fmt is not null, this is followed by a message containing the optional variables, formatted according to fmt, followed by a trailing colon and space. The last part of the message is the string associated with the current value of errno, followed by a linefeed.

The function verr() is roughly equivalent to 

fprintf(stderr,"%s: ", argv[0]);
vfprintf(stderr, fmt, vargs);
fprintf(stderr, ": %s\n", strerror(errno));
exit(eval);

PARAMETERS

eval 

Is the exit value for process.

fmt 

Is the format string for optional arguments, or the null pointer if no formatted message is to be written.

vargs 

Are optional arguments to the formatted message.

RETURN VALUES

The verr() function never returns.

CONFORMANCE

4.4BSD.

MULTITHREAD SAFETY LEVEL

Unsafe.

PORTING ISSUES

None.

AVAILABILITY

MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

Functions:
err(), errx(), perror(), strerror(), va_start(), verrx(), vfprintf(), vwarn(), vwarnx(), warn(), warnx()

MKS Toolkit 9.3 Documentation Build 6.