view libpwon/readconf.c @ 681:0815661d6e3e

doc/Loadtools-performance: typo fix
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 09 Mar 2020 07:24:28 +0000
parents 41b3e010808d
children 7d1df6d831e4
line wrap: on
line source

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>

static char conf_file_pathname[] = "/opt/freecalypso/bootctrl.conf";

#define	MAX_BOOTCTRL_CONF_LINE	510

char bootctrl_pwon_cmd[MAX_BOOTCTRL_CONF_LINE+1];

find_bootctrl_entry(soughtname)
	char *soughtname;
{
	FILE *inf;
	char linebuf[MAX_BOOTCTRL_CONF_LINE+2];
	int lineno;
	char *cp, *np;

	inf = fopen(conf_file_pathname, "r");
	if (!inf) {
		perror(conf_file_pathname);
		return(-1);
	}
	for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
		cp = index(linebuf, '\n');
		if (!cp) {
			fprintf(stderr,
				"%s line %d: too long or missing newline\n",
				conf_file_pathname, lineno);
			fclose(inf);
			return(-1);
		}
		*cp = '\0';
		for (cp = linebuf; isspace(*cp); cp++)
			;
		if (*cp == '\0' || *cp == '#')
			continue;
		for (np = cp; *cp && !isspace(*cp); cp++)
			;
		if (!*cp) {
invalid_syntax:		fprintf(stderr, "%s line %d: invalid syntax\n",
				conf_file_pathname, lineno);
			fclose(inf);
			return(-1);
		}
		*cp++ = '\0';
		while (isspace(*cp))
			cp++;
		if (*cp == '\0' || *cp == '#')
			goto invalid_syntax;
		if (!strcmp(np, soughtname)) {
			strcpy(bootctrl_pwon_cmd, cp);
			fclose(inf);
			return(0);
		}
	}
	fclose(inf);
	fprintf(stderr, "error: no \"%s\" entry found in %s\n", soughtname,
		conf_file_pathname);
	return(-1);
}