2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 /* Daemon that implements remote procedure call service for non-vendor system
11 * calls (currently setpag and pioctl). The AFS cache manager daemon, afsd,
12 * currently fires up this module, when the "-rmtsys" flag is given.
13 * This module resides in the lib/afs/librmtsys.a library.
15 #include <afsconfig.h>
16 #include <afs/param.h>
21 #include <sys/types.h>
22 #include <sys/ioctl.h>
25 #include <netinet/in.h>
36 /*#include <afs/cellconfig.h>*/
39 extern RMTSYS_ExecuteRequest();
41 #define NFS_EXPORTER 1 /* To probably handle more later */
42 #define PSETPAG 110 /* Also defined in afs/afs_pioctl.c */
43 #define PIOCTL_HEADER 6 /* # of words prepended to special pioctl */
44 #define PSetClientContext 99 /* Sets up caller's creds */
45 #define N_SECURITY_OBJECTS 1 /* No real security yet */
47 #define SETCLIENTCONTEXT(BLOB, host, uid, group0, group1, cmd, exportertype) { \
50 (BLOB)[2] = (group0); \
51 (BLOB)[3] = (group1); \
53 (BLOB)[5] = (exportertype); \
57 /* Main routine of the remote AFS system call server. The calling process will
58 * never return; this is currently called from afsd (when "-rmtsys" is passed
62 /* void catchsig(int); */
63 struct rx_securityClass *(securityObjects[N_SECURITY_OBJECTS]);
64 struct rx_service *service;
67 * Ignore SIGHUP signal since apparently is sent to the processes that
68 * start up from /etc/rc for some systems like hpux and aix3.1...
70 signal(SIGHUP, SIG_IGN);
72 /* Initialize the rx-based RMTSYS server */
73 if (rx_Init(htons(AFSCONF_RMTSYSPORT)) < 0)
75 securityObjects[0] = rxnull_NewServerSecurityObject();
76 if (securityObjects[0] == (struct rx_securityClass *)0)
77 rmt_Quit("rxnull_NewServerSecurityObject");
79 rx_NewService(0, RMTSYS_SERVICEID, AFSCONF_RMTSYSSERVICE,
80 securityObjects, N_SECURITY_OBJECTS,
81 RMTSYS_ExecuteRequest);
82 if (service == (struct rx_service *)0)
83 rmt_Quit("rx_NewService");
84 /* One may wish to tune some default RX params for better performance
86 rx_SetMaxProcs(service, 2);
87 rx_StartServer(1); /* Donate this process to the server process pool */
91 /* Implements the remote setpag(2) call. Note that unlike the standard call,
92 * here we also get back the new pag value; we need this so that the caller
93 * can add it to its group list via setgroups() */
95 SRMTSYS_SetPag(call, creds, newpag, errornumber)
98 afs_int32 *newpag, *errornumber;
100 afs_uint32 blob[PIOCTL_HEADER];
101 struct ViceIoctl data;
102 register afs_int32 error;
105 SETCLIENTCONTEXT(blob, rx_HostOf(call->conn->peer), creds->uid,
106 creds->group0, creds->group1, PSETPAG, NFS_EXPORTER);
107 data.in = (caddr_t) blob;
108 data.in_size = sizeof(blob);
109 data.out = (caddr_t) blob;
110 data.out_size = sizeof(blob);
111 /* force local pioctl call */
112 error = lpioctl(0, _VICEIOCTL(PSetClientContext), &data, 1);
114 if (errno == PSETPAG) {
115 *newpag = blob[0]; /* new pag value */
117 *errornumber = errno;
123 /* Implements the remote pioctl(2) call */
125 SRMTSYS_Pioctl(call, creds, path, cmd, follow, InData, OutData, errornumber)
126 struct rx_call *call;
128 afs_int32 cmd, follow, *errornumber;
130 rmtbulk *InData, *OutData;
132 register afs_int32 error;
133 struct ViceIoctl data;
135 afs_uint32 blob[PIOCTL_HEADER];
138 SETCLIENTCONTEXT(blob, rx_HostOf(call->conn->peer), creds->uid,
139 creds->group0, creds->group1, cmd, NFS_EXPORTER);
141 (char *)malloc(InData->rmtbulk_len +
142 PIOCTL_HEADER * sizeof(afs_int32));
144 return (-1); /* helpless here */
145 if (!strcmp(path, NIL_PATHP))
146 pathp = (char *)0; /* It meant to be NIL */
147 memcpy(data.in, blob, sizeof(blob));
148 inparam_conversion(cmd, InData->rmtbulk_val, 1);
149 memcpy(data.in + sizeof(blob), InData->rmtbulk_val, InData->rmtbulk_len);
150 data.in_size = InData->rmtbulk_len + PIOCTL_HEADER * sizeof(afs_int32);
151 data.out = OutData->rmtbulk_val;
152 data.out_size = OutData->rmtbulk_len;
153 /* force local pioctl call */
154 error = lpioctl(pathp, _VICEIOCTL(PSetClientContext), &data, follow);
156 *errornumber = errno;
158 /* Send the results back in network order */
159 outparam_conversion(cmd, data.out, 0);
162 /* Note that we return success (i.e. 0) even when pioctl fails; that's
163 * because the actual errno is passed back via 'errornumber' and this call
164 * MUST return success error in order to get that OUT params back (YUCK!)
172 fprintf(stderr, msg, a, b);