On Fri, Jan 26, 2007 at 11:52:12AM +0100, David Härdeman wrote:
> On Fri, Jan 26, 2007 at 10:52:39AM +0100, Sven Luther wrote:
> >Next step would be :
> >
> > 1) write a program writing to stdout and dropping the actual error message
> > somewhere.
>
> How about this:
>
> #include <stdio.h>
> #include <stdlib.h>
> #include <errno.h>
> #include <string.h>
>
> #define LOGFILE "/stdouttest.log"
> #define TESTMSG "This is a test string\n"
>
> int
> main(int argc, char **argv, char **envp)
> {
> FILE *logfile;
> int printerrno;
> char *printerror;
> int retval = EXIT_FAILURE;
> int result;
>
> /* Setup a log file */
> logfile = fopen(LOGFILE, "a");
> if (!logfile)
> exit(retval);
>
> fprintf(logfile, "Program %s started\n", argv[0]);
>
> /* Print to stdout */
> result = fprintf(stdout, TESTMSG);
>
> /* Log results */
> if (result < 0) {
> printerrno = errno;
> printerror = strerror(printerrno);
> fprintf(logfile, "Printing failed (%i): %s\n",
> printerrno, printerror);
> } else if (result < strlen(TESTMSG)) {
> fprintf(logfile, "Printing was truncated to %i bytes\n",
> result);
> } else {
> fprintf(logfile, "Printing successful\n");
> retval = EXIT_SUCCESS;
> }
>
> /* We're done */
> fclose(logfile);
> exit(retval);
> }
Thanks, i will try, but i won't have time until i am back from solution linux
next thursday.
Friendly,
Sven Luther
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