3 * Copyright (c) 1997 Adrian Sun (asun@zoology.washington.edu)
4 * All rights reserved. See COPYRIGHT.
9 #endif /* HAVE_CONFIG_H */
17 #include <sys/types.h>
18 #include <sys/socket.h>
20 #include <sys/types.h>
23 #include <atalk/logger.h>
24 #include <atalk/util.h>
26 #include <atalk/dsi.h>
27 #include <atalk/server_child.h>
30 * Start a DSI session, fork an afpd process
32 * @param childp (w) after fork: parent return pointer to child, child returns NULL
33 * @returns 0 on sucess, any other value denotes failure
35 int dsi_getsession(DSI *dsi, server_child_t *serv_children, int tickleval, afp_child_t **childp)
41 if (socketpair(PF_UNIX, SOCK_STREAM, 0, ipc_fds) < 0) {
42 LOG(log_error, logtype_dsi, "dsi_getsess: %s", strerror(errno));
46 if (setnonblock(ipc_fds[0], 1) != 0 || setnonblock(ipc_fds[1], 1) != 0) {
47 LOG(log_error, logtype_dsi, "dsi_getsess: setnonblock: %s", strerror(errno));
51 switch (pid = dsi->proto_open(dsi)) { /* in libatalk/dsi/dsi_tcp.c */
53 /* if we fail, just return. it might work later */
54 LOG(log_error, logtype_dsi, "dsi_getsess: %s", strerror(errno));
57 case 0: /* child. mostly handled below. */
61 /* using SIGKILL is hokey, but the child might not have
62 * re-established its signal handler for SIGTERM yet. */
64 if ((child = server_child_add(serv_children, pid, ipc_fds[0])) == NULL) {
65 LOG(log_error, logtype_dsi, "dsi_getsess: %s", strerror(errno));
67 dsi->header.dsi_flags = DSIFL_REPLY;
68 dsi->header.dsi_data.dsi_code = htonl(DSIERR_SERVBUSY);
70 dsi->header.dsi_data.dsi_code = DSIERR_OK;
73 dsi->proto_close(dsi);
78 /* Save number of existing and maximum connections */
79 dsi->AFPobj->cnx_cnt = serv_children->servch_count;
80 dsi->AFPobj->cnx_max = serv_children->servch_nsessions;
82 /* get rid of some stuff */
83 dsi->AFPobj->ipc_fd = ipc_fds[1];
85 close(dsi->serversock);
87 server_child_free(serv_children);
89 switch (dsi->header.dsi_command) {
90 case DSIFUNC_STAT: /* send off status and return */
92 /* OpenTransport 1.1.2 bug workaround:
94 * OT code doesn't currently handle close sockets well. urk.
95 * the workaround: wait for the client to close its
96 * side. timeouts prevent indefinite resource use.
99 static struct timeval timeout = {120, 0};
105 FD_SET(dsi->socket, &readfds);
107 select(FD_SETSIZE, &readfds, NULL, NULL, &timeout);
112 case DSIFUNC_OPEN: /* setup session */
113 /* set up the tickle timer */
114 dsi->timer.it_interval.tv_sec = dsi->timer.it_value.tv_sec = tickleval;
115 dsi->timer.it_interval.tv_usec = dsi->timer.it_value.tv_usec = 0;
116 dsi_opensession(dsi);
120 default: /* just close */
121 LOG(log_info, logtype_dsi, "DSIUnknown %d", dsi->header.dsi_command);
122 dsi->proto_close(dsi);