1 /* fork.c - fork and exec a process, connecting stdin/out w/pipes */
10 #include <ac/unistd.h>
25 if ( pipe( p2c ) != 0 || pipe( c2p ) != 0 ) {
26 Debug( LDAP_DEBUG_ANY, "pipe failed\n", 0, 0, 0 );
31 * what we're trying to set up looks like this:
32 * parent *wfp -> p2c[1] | p2c[0] -> stdin child
33 * parent *rfp <- c2p[0] | c2p[1] <- stdout child
37 switch ( (pid = fork1()) )
39 switch ( (pid = fork()) )
44 * child could deadlock here due to resources locked
47 * If so, configure --without-threads or implement forking
48 * via a surrogate parent.
52 if ( dup2( p2c[0], 0 ) == -1 || dup2( c2p[1], 1 ) == -1 ) {
53 Debug( LDAP_DEBUG_ANY, "dup2 failed\n", 0, 0, 0 );
57 execv( args[0], args );
59 Debug( LDAP_DEBUG_ANY, "execv failed\n", 0, 0, 0 );
62 case -1: /* trouble */
63 Debug( LDAP_DEBUG_ANY, "fork failed\n", 0, 0, 0 );
72 if ( (*rfp = fdopen( c2p[0], "r" )) == NULL || (*wfp = fdopen( p2c[1],
74 Debug( LDAP_DEBUG_ANY, "fdopen failed\n", 0, 0, 0 );