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>
20 #include <sys/types.h>
21 #include <sys/ioctl.h>
24 #include <netinet/in.h>
35 /*#include <afs/cellconfig.h>*/
38 extern RMTSYS_ExecuteRequest();
40 #define NFS_EXPORTER 1 /* To probably handle more later */
41 #define PSETPAG 110 /* Also defined in afs/afs_pioctl.c */
42 #define PIOCTL_HEADER 6 /* # of words prepended to special pioctl */
43 #define PSetClientContext 99 /* Sets up caller's creds */
44 #define N_SECURITY_OBJECTS 1 /* No real security yet */
46 #define SETCLIENTCONTEXT(BLOB, host, uid, group0, group1, cmd, exportertype) { \
49 (BLOB)[2] = (group0); \
50 (BLOB)[3] = (group1); \
52 (BLOB)[5] = (exportertype); \
56 /* Main routine of the remote AFS system call server. The calling process will
57 * never return; this is currently called from afsd (when "-rmtsys" is passed
60 /* void catchsig(int); */
61 struct rx_securityClass *(securityObjects[N_SECURITY_OBJECTS]);
62 struct rx_service *service;
65 * Ignore SIGHUP signal since apparently is sent to the processes that
66 * start up from /etc/rc for some systems like hpux and aix3.1...
68 signal(SIGHUP, SIG_IGN);
70 /* Initialize the rx-based RMTSYS server */
71 if (rx_Init(htons(AFSCONF_RMTSYSPORT)) < 0)
73 securityObjects[0] = rxnull_NewServerSecurityObject();
74 if (securityObjects[0] == (struct rx_securityClass *) 0)
75 rmt_Quit("rxnull_NewServerSecurityObject");
76 service = rx_NewService(0, RMTSYS_SERVICEID, AFSCONF_RMTSYSSERVICE,
77 securityObjects, N_SECURITY_OBJECTS,
78 RMTSYS_ExecuteRequest);
79 if (service == (struct rx_service *) 0)
80 rmt_Quit("rx_NewService");
81 /* One may wish to tune some default RX params for better performance
83 rx_SetMaxProcs(service, 2);
84 rx_StartServer(1); /* Donate this process to the server process pool */
88 /* Implements the remote setpag(2) call. Note that unlike the standard call,
89 * here we also get back the new pag value; we need this so that the caller
90 * can add it to its group list via setgroups() */
91 afs_int32 SRMTSYS_SetPag(call, creds, newpag, errornumber)
94 afs_int32 *newpag, *errornumber;
96 afs_uint32 blob[PIOCTL_HEADER];
97 struct ViceIoctl data;
98 register afs_int32 error;
101 SETCLIENTCONTEXT(blob, rx_HostOf(call->conn->peer), creds->uid,
102 creds->group0, creds->group1, PSETPAG, NFS_EXPORTER);
103 data.in = (caddr_t) blob;
104 data.in_size = sizeof (blob);
105 data.out = (caddr_t) blob;
106 data.out_size = sizeof (blob);
107 /* force local pioctl call */
108 error = lpioctl(0, _VICEIOCTL(PSetClientContext), &data, 1);
110 if (errno == PSETPAG) {
111 *newpag = blob[0]; /* new pag value */
113 *errornumber = errno;
119 /* Implements the remote pioctl(2) call */
120 afs_int32 SRMTSYS_Pioctl(call, creds, path, cmd, follow, InData, OutData, errornumber)
121 struct rx_call *call;
123 afs_int32 cmd, follow, *errornumber;
125 rmtbulk *InData, *OutData;
127 register afs_int32 error;
128 struct ViceIoctl data;
130 afs_uint32 blob[PIOCTL_HEADER];
133 SETCLIENTCONTEXT(blob, rx_HostOf(call->conn->peer), creds->uid,
134 creds->group0, creds->group1, cmd, NFS_EXPORTER);
135 data.in = (char *)malloc(InData->rmtbulk_len + PIOCTL_HEADER*sizeof(afs_int32));
136 if (!data.in) return (-1); /* helpless here */
137 if (!strcmp(path, NIL_PATHP)) pathp = (char *)0; /* It meant to be NIL */
138 memcpy(data.in, blob, sizeof(blob));
139 inparam_conversion(cmd, InData->rmtbulk_val, 1);
140 memcpy(data.in+sizeof(blob), InData->rmtbulk_val, InData->rmtbulk_len);
141 data.in_size = InData->rmtbulk_len + PIOCTL_HEADER*sizeof(afs_int32);
142 data.out = OutData->rmtbulk_val;
143 data.out_size = OutData->rmtbulk_len;
144 /* force local pioctl call */
145 error = lpioctl(pathp, _VICEIOCTL(PSetClientContext), &data, follow);
147 *errornumber = errno;
149 /* Send the results back in network order */
150 outparam_conversion(cmd, data.out, 0);
153 /* Note that we return success (i.e. 0) even when pioctl fails; that's
154 * because the actual errno is passed back via 'errornumber' and this call
155 * MUST return success error in order to get that OUT params back (YUCK!)
163 fprintf(stderr, msg, a, b);