1*43103Smarc /*- 2*43103Smarc * Copyright (c) 1990 The Regents of the University of California. 3*43103Smarc * All rights reserved. 4*43103Smarc * 5*43103Smarc * %sccs.include.redist.c% 6*43103Smarc */ 7*43103Smarc 8*43103Smarc #if defined(LIBC_SCCS) && !defined(lint) 9*43103Smarc static char sccsid[] = "@(#)daemon.c 5.1 (Berkeley) 06/15/90"; 10*43103Smarc #endif /* LIBC_SCCS and not lint */ 11*43103Smarc 12*43103Smarc #include <sys/file.h> 13*43103Smarc 14*43103Smarc daemon() 15*43103Smarc { 16*43103Smarc int cpid; 17*43103Smarc 18*43103Smarc if ((cpid = fork()) == -1) 19*43103Smarc return (-1); 20*43103Smarc if (cpid) 21*43103Smarc exit(0); 22*43103Smarc 23*43103Smarc (void) setsid(); 24*43103Smarc (void) chdir("/"); 25*43103Smarc (void) close(0); 26*43103Smarc (void) close(1); 27*43103Smarc (void) close(2); 28*43103Smarc (void) open("/", O_RDONLY, 0); 29*43103Smarc (void) dup2(0, 1); 30*43103Smarc (void) dup2(0, 2); 31*43103Smarc } 32