1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
23*0Sstevel@tonic-gate /* All Rights Reserved */
24*0Sstevel@tonic-gate
25*0Sstevel@tonic-gate
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate * Copyright (c) 1997,1998,2002 by Sun Microsystems, Inc.
28*0Sstevel@tonic-gate * All rights reserved.
29*0Sstevel@tonic-gate */
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.1 */
32*0Sstevel@tonic-gate /*LINTLIBRARY*/
33*0Sstevel@tonic-gate
34*0Sstevel@tonic-gate /*
35*0Sstevel@tonic-gate * dgrpent.c
36*0Sstevel@tonic-gate *
37*0Sstevel@tonic-gate * Contains functions that deal with the device-group table and are not for
38*0Sstevel@tonic-gate * consumption by the general user population.
39*0Sstevel@tonic-gate *
40*0Sstevel@tonic-gate * Functions defined:
41*0Sstevel@tonic-gate * _opendgrptab() Opens the device-group table for commands
42*0Sstevel@tonic-gate * _setdgrptab() Rewinds the open device table
43*0Sstevel@tonic-gate * _enddgrptab() Closes the open device table
44*0Sstevel@tonic-gate * _getdgrptabent() Gets the next entry in the device table
45*0Sstevel@tonic-gate * _freedgrptabent() Frees memory allocated to a device-table entry
46*0Sstevel@tonic-gate * _getdgrprec() Gets a specific record from the device table
47*0Sstevel@tonic-gate * _dgrptabpath() Gets the pathname of the device group file
48*0Sstevel@tonic-gate */
49*0Sstevel@tonic-gate
50*0Sstevel@tonic-gate /*
51*0Sstevel@tonic-gate * Header files
52*0Sstevel@tonic-gate * <sys/types.h> System data types
53*0Sstevel@tonic-gate * <unistd.h> Standard UNIX(r) definitions
54*0Sstevel@tonic-gate * <stdio.h> Standard I/O Definitions
55*0Sstevel@tonic-gate * <string.h> String handling definitions
56*0Sstevel@tonic-gate * <ctype.h> Character types and macros
57*0Sstevel@tonic-gate * <errno.h> Errorcode definitions
58*0Sstevel@tonic-gate * <sys/stat.h> File status information
59*0Sstevel@tonic-gate * <devmgmt.h> Global Device Management definitions
60*0Sstevel@tonic-gate * "devtab.h" Local device table definitions
61*0Sstevel@tonic-gate */
62*0Sstevel@tonic-gate
63*0Sstevel@tonic-gate #include <sys/types.h>
64*0Sstevel@tonic-gate #include <unistd.h>
65*0Sstevel@tonic-gate #include <stdio.h>
66*0Sstevel@tonic-gate #include <string.h>
67*0Sstevel@tonic-gate #include <ctype.h>
68*0Sstevel@tonic-gate #include <errno.h>
69*0Sstevel@tonic-gate #include <sys/stat.h>
70*0Sstevel@tonic-gate #include <devmgmt.h>
71*0Sstevel@tonic-gate #include "devtab.h"
72*0Sstevel@tonic-gate #include <stdlib.h>
73*0Sstevel@tonic-gate
74*0Sstevel@tonic-gate /*
75*0Sstevel@tonic-gate * Local definitions
76*0Sstevel@tonic-gate */
77*0Sstevel@tonic-gate
78*0Sstevel@tonic-gate
79*0Sstevel@tonic-gate /*
80*0Sstevel@tonic-gate * Static data definitions:
81*0Sstevel@tonic-gate * leftoff Addr of char to begin next parse using
82*0Sstevel@tonic-gate * getfld(), getattrval(), getquoted()
83*0Sstevel@tonic-gate * recbufsz The size of the buffer used for reading records
84*0Sstevel@tonic-gate * recbuf Addr of malloc() buffer for reading records
85*0Sstevel@tonic-gate * recnum Record number of next record to read
86*0Sstevel@tonic-gate * xtndcnt Number of times the buffer has been extended
87*0Sstevel@tonic-gate */
88*0Sstevel@tonic-gate
89*0Sstevel@tonic-gate static char *leftoff = NULL;
90*0Sstevel@tonic-gate static int recbufsz = 0;
91*0Sstevel@tonic-gate static char *recbuf = NULL;
92*0Sstevel@tonic-gate static int recnum = 0;
93*0Sstevel@tonic-gate static int xtndcnt = 0;
94*0Sstevel@tonic-gate
95*0Sstevel@tonic-gate /*
96*0Sstevel@tonic-gate * void _setdgrptab()
97*0Sstevel@tonic-gate *
98*0Sstevel@tonic-gate * This function rewinds the open device table so that the next
99*0Sstevel@tonic-gate * _getdgrptabent() returns the first record in the device table.
100*0Sstevel@tonic-gate *
101*0Sstevel@tonic-gate * Arguments: None
102*0Sstevel@tonic-gate *
103*0Sstevel@tonic-gate * Returns: Void
104*0Sstevel@tonic-gate */
105*0Sstevel@tonic-gate
106*0Sstevel@tonic-gate void
_setdgrptab(void)107*0Sstevel@tonic-gate _setdgrptab(void)
108*0Sstevel@tonic-gate {
109*0Sstevel@tonic-gate /* If the device table file is open, rewind the file */
110*0Sstevel@tonic-gate if (oam_dgroup) {
111*0Sstevel@tonic-gate rewind(oam_dgroup);
112*0Sstevel@tonic-gate recnum = 0;
113*0Sstevel@tonic-gate }
114*0Sstevel@tonic-gate }
115*0Sstevel@tonic-gate
116*0Sstevel@tonic-gate /*
117*0Sstevel@tonic-gate * void _enddgrptab()
118*0Sstevel@tonic-gate *
119*0Sstevel@tonic-gate * This function closes the open device table. It resets the
120*0Sstevel@tonic-gate * open device table external variable to NULL.
121*0Sstevel@tonic-gate *
122*0Sstevel@tonic-gate * Arguments: None
123*0Sstevel@tonic-gate *
124*0Sstevel@tonic-gate * Returns: Void
125*0Sstevel@tonic-gate */
126*0Sstevel@tonic-gate
127*0Sstevel@tonic-gate void
_enddgrptab(void)128*0Sstevel@tonic-gate _enddgrptab(void)
129*0Sstevel@tonic-gate {
130*0Sstevel@tonic-gate /* If the device table file is open, close it */
131*0Sstevel@tonic-gate if (oam_dgroup) {
132*0Sstevel@tonic-gate (void) fclose(oam_dgroup);
133*0Sstevel@tonic-gate recnum = 0;
134*0Sstevel@tonic-gate oam_dgroup = NULL;
135*0Sstevel@tonic-gate }
136*0Sstevel@tonic-gate }
137*0Sstevel@tonic-gate
138*0Sstevel@tonic-gate /*
139*0Sstevel@tonic-gate * char *getfld(ptr, delims)
140*0Sstevel@tonic-gate * char *ptr
141*0Sstevel@tonic-gate * char *delims
142*0Sstevel@tonic-gate *
143*0Sstevel@tonic-gate * Notes:
144*0Sstevel@tonic-gate * - Can't use "strtok()" because of its use of static data. The caller
145*0Sstevel@tonic-gate * may be using strtok() and we'll really mess them up.
146*0Sstevel@tonic-gate * - The function returns NULL if it didn't find any token -- '\0' can't
147*0Sstevel@tonic-gate * be a delimiter using this algorithm.
148*0Sstevel@tonic-gate */
149*0Sstevel@tonic-gate
150*0Sstevel@tonic-gate static char *
getfld(char * ptr,char * delims)151*0Sstevel@tonic-gate getfld(
152*0Sstevel@tonic-gate char *ptr, /* String to parse */
153*0Sstevel@tonic-gate char *delims) /* List of delimiters */
154*0Sstevel@tonic-gate {
155*0Sstevel@tonic-gate char *p, *q;
156*0Sstevel@tonic-gate
157*0Sstevel@tonic-gate /*
158*0Sstevel@tonic-gate * Figure out where to start.
159*0Sstevel@tonic-gate * If given a pointer, use that.
160*0Sstevel@tonic-gate * Otherwise, use where we left off.
161*0Sstevel@tonic-gate */
162*0Sstevel@tonic-gate
163*0Sstevel@tonic-gate p = ptr ? ptr : leftoff;
164*0Sstevel@tonic-gate
165*0Sstevel@tonic-gate
166*0Sstevel@tonic-gate /*
167*0Sstevel@tonic-gate * If there's anything to parse, search the string for the first
168*0Sstevel@tonic-gate * occurrence of any of the delimiters. If one is found, change it
169*0Sstevel@tonic-gate * to '\0' and remember the place to start for next time. If not
170*0Sstevel@tonic-gate * found, forget the restart address and prepare to return NULL
171*0Sstevel@tonic-gate */
172*0Sstevel@tonic-gate
173*0Sstevel@tonic-gate if (p) {
174*0Sstevel@tonic-gate while (*p && isspace((unsigned char)*p)) p++;
175*0Sstevel@tonic-gate if (*p) {
176*0Sstevel@tonic-gate q = p;
177*0Sstevel@tonic-gate while (*q && !strchr(delims, *q)) q++;
178*0Sstevel@tonic-gate if (*q) {
179*0Sstevel@tonic-gate *q++ = '\0';
180*0Sstevel@tonic-gate leftoff = q;
181*0Sstevel@tonic-gate } else leftoff = NULL;
182*0Sstevel@tonic-gate } else leftoff = p = NULL;
183*0Sstevel@tonic-gate }
184*0Sstevel@tonic-gate
185*0Sstevel@tonic-gate /* Finished */
186*0Sstevel@tonic-gate return (p);
187*0Sstevel@tonic-gate }
188*0Sstevel@tonic-gate
189*0Sstevel@tonic-gate /*
190*0Sstevel@tonic-gate * char *getnextrec()
191*0Sstevel@tonic-gate *
192*0Sstevel@tonic-gate * This function gets the next record from the input stream "oam_dgroup"
193*0Sstevel@tonic-gate * and puts it in the device-group table record buffer (whose address is
194*0Sstevel@tonic-gate * in "recbuf"). If the buffer is not allocated or is too small to
195*0Sstevel@tonic-gate * accommodate the record, the function allocates more space to the
196*0Sstevel@tonic-gate * buffer.
197*0Sstevel@tonic-gate *
198*0Sstevel@tonic-gate * Arguments: None
199*0Sstevel@tonic-gate *
200*0Sstevel@tonic-gate * Returns: char *
201*0Sstevel@tonic-gate * The address of the buffer containing the record.
202*0Sstevel@tonic-gate *
203*0Sstevel@tonic-gate * Static Data Referenced:
204*0Sstevel@tonic-gate * recbuf Address of the buffer containing records read from the
205*0Sstevel@tonic-gate * device table file
206*0Sstevel@tonic-gate * recbufsz Current size of the record buffer
207*0Sstevel@tonic-gate * xtndcnt Number of times the record buffer has been extended
208*0Sstevel@tonic-gate * oam_dgroup Device-group table stream, expected to be open for (at
209*0Sstevel@tonic-gate * least) reading
210*0Sstevel@tonic-gate *
211*0Sstevel@tonic-gate * Notes:
212*0Sstevel@tonic-gate * - The string returned in the buffer <buf> ALWAYS end in a '\n' (newline)
213*0Sstevel@tonic-gate * character followed by a '\0' (null).
214*0Sstevel@tonic-gate */
215*0Sstevel@tonic-gate
216*0Sstevel@tonic-gate static char *
getnextrec(void)217*0Sstevel@tonic-gate getnextrec(void)
218*0Sstevel@tonic-gate {
219*0Sstevel@tonic-gate /* Automatic data */
220*0Sstevel@tonic-gate char *recp; /* Value to return */
221*0Sstevel@tonic-gate char *p; /* Temp pointer */
222*0Sstevel@tonic-gate int done; /* TRUE if we're finished */
223*0Sstevel@tonic-gate int reclen; /* Number of chars in record */
224*0Sstevel@tonic-gate
225*0Sstevel@tonic-gate
226*0Sstevel@tonic-gate /* If there's no buffer for records, try to get one */
227*0Sstevel@tonic-gate if (!recbuf) {
228*0Sstevel@tonic-gate if (recbuf = malloc(DGRP_BUFSIZ)) {
229*0Sstevel@tonic-gate recbufsz = DGRP_BUFSIZ;
230*0Sstevel@tonic-gate xtndcnt = 0;
231*0Sstevel@tonic-gate } else return (NULL);
232*0Sstevel@tonic-gate }
233*0Sstevel@tonic-gate
234*0Sstevel@tonic-gate
235*0Sstevel@tonic-gate /* Get the next record */
236*0Sstevel@tonic-gate recp = fgets(recbuf, recbufsz, oam_dgroup);
237*0Sstevel@tonic-gate done = FALSE;
238*0Sstevel@tonic-gate
239*0Sstevel@tonic-gate /* While we've something to return and we're not finished ... */
240*0Sstevel@tonic-gate while (recp && !done) {
241*0Sstevel@tonic-gate
242*0Sstevel@tonic-gate /* If our return string isn't a null-string ... */
243*0Sstevel@tonic-gate if ((reclen = (int)strlen(recp)) != 0) {
244*0Sstevel@tonic-gate
245*0Sstevel@tonic-gate /* If we have a complete record, we're finished */
246*0Sstevel@tonic-gate if (*(recp+reclen-1) == '\n') done = TRUE;
247*0Sstevel@tonic-gate else while (!done) {
248*0Sstevel@tonic-gate
249*0Sstevel@tonic-gate /*
250*0Sstevel@tonic-gate * Need to complete the record. A complete record is one
251*0Sstevel@tonic-gate * which is terminated by a new-line character
252*0Sstevel@tonic-gate */
253*0Sstevel@tonic-gate
254*0Sstevel@tonic-gate /* If the buffer is full, expand it and continue reading */
255*0Sstevel@tonic-gate if (reclen == recbufsz-1) {
256*0Sstevel@tonic-gate
257*0Sstevel@tonic-gate /* Have we reached our maximum extension count? */
258*0Sstevel@tonic-gate if (xtndcnt < XTND_MAXCNT) {
259*0Sstevel@tonic-gate
260*0Sstevel@tonic-gate /* Expand the record buffer */
261*0Sstevel@tonic-gate if (p = realloc(recbuf,
262*0Sstevel@tonic-gate (size_t)(recbufsz+DGRP_BUFINC))) {
263*0Sstevel@tonic-gate
264*0Sstevel@tonic-gate /* Update buffer information */
265*0Sstevel@tonic-gate xtndcnt++;
266*0Sstevel@tonic-gate recbuf = p;
267*0Sstevel@tonic-gate recbufsz += DGRP_BUFINC;
268*0Sstevel@tonic-gate
269*0Sstevel@tonic-gate } else {
270*0Sstevel@tonic-gate
271*0Sstevel@tonic-gate /* Expansion failed */
272*0Sstevel@tonic-gate recp = NULL;
273*0Sstevel@tonic-gate done = TRUE;
274*0Sstevel@tonic-gate }
275*0Sstevel@tonic-gate
276*0Sstevel@tonic-gate } else {
277*0Sstevel@tonic-gate
278*0Sstevel@tonic-gate /* Maximum extend count exceeded. Insane table */
279*0Sstevel@tonic-gate recp = NULL;
280*0Sstevel@tonic-gate done = TRUE;
281*0Sstevel@tonic-gate }
282*0Sstevel@tonic-gate
283*0Sstevel@tonic-gate }
284*0Sstevel@tonic-gate
285*0Sstevel@tonic-gate /* Complete the record */
286*0Sstevel@tonic-gate if (!done) {
287*0Sstevel@tonic-gate
288*0Sstevel@tonic-gate /* Read stuff into the expanded space */
289*0Sstevel@tonic-gate if (fgets(recbuf+reclen, recbufsz-reclen, oam_dgroup)) {
290*0Sstevel@tonic-gate reclen = (int)strlen(recbuf);
291*0Sstevel@tonic-gate recp = recbuf;
292*0Sstevel@tonic-gate if (*(recp+reclen-1) == '\n') done = TRUE;
293*0Sstevel@tonic-gate } else {
294*0Sstevel@tonic-gate /* Read failed, corrupt record? */
295*0Sstevel@tonic-gate recp = NULL;
296*0Sstevel@tonic-gate done = TRUE;
297*0Sstevel@tonic-gate }
298*0Sstevel@tonic-gate }
299*0Sstevel@tonic-gate
300*0Sstevel@tonic-gate } /* End incomplete record handling */
301*0Sstevel@tonic-gate
302*0Sstevel@tonic-gate } else {
303*0Sstevel@tonic-gate
304*0Sstevel@tonic-gate /* Read a null string? (corrupt table) */
305*0Sstevel@tonic-gate recp = NULL;
306*0Sstevel@tonic-gate done = TRUE;
307*0Sstevel@tonic-gate }
308*0Sstevel@tonic-gate
309*0Sstevel@tonic-gate } /* while (recp && !done) */
310*0Sstevel@tonic-gate
311*0Sstevel@tonic-gate /* Return what we've got (if anything) */
312*0Sstevel@tonic-gate return (recp);
313*0Sstevel@tonic-gate }
314*0Sstevel@tonic-gate
315*0Sstevel@tonic-gate /*
316*0Sstevel@tonic-gate * char *_dgrptabpath()
317*0Sstevel@tonic-gate *
318*0Sstevel@tonic-gate * Get the pathname of the device-group table file
319*0Sstevel@tonic-gate *
320*0Sstevel@tonic-gate * Arguments: None
321*0Sstevel@tonic-gate *
322*0Sstevel@tonic-gate * Returns: char *
323*0Sstevel@tonic-gate * Returns the pathname to the device group table of (char *) NULL if
324*0Sstevel@tonic-gate * there was a problem getting the memory needed to contain the
325*0Sstevel@tonic-gate * pathname.
326*0Sstevel@tonic-gate *
327*0Sstevel@tonic-gate * Algorithm:
328*0Sstevel@tonic-gate * 1. If OAM_DGRP is defined in the environment and is not
329*0Sstevel@tonic-gate * defined as "", it returns the value of that environment
330*0Sstevel@tonic-gate * variable.
331*0Sstevel@tonic-gate * 2. Otherwise, use the devault pathname (as defined by the
332*0Sstevel@tonic-gate * environment variable DGRP_PATH in <devmgmt.h>.
333*0Sstevel@tonic-gate */
334*0Sstevel@tonic-gate
335*0Sstevel@tonic-gate
336*0Sstevel@tonic-gate char *
_dgrptabpath(void)337*0Sstevel@tonic-gate _dgrptabpath(void)
338*0Sstevel@tonic-gate {
339*0Sstevel@tonic-gate
340*0Sstevel@tonic-gate /* Automatic data */
341*0Sstevel@tonic-gate #ifdef DEBUG
342*0Sstevel@tonic-gate char *path; /* Ptr to path in environment */
343*0Sstevel@tonic-gate #endif
344*0Sstevel@tonic-gate char *rtnval; /* Ptr to value to return */
345*0Sstevel@tonic-gate
346*0Sstevel@tonic-gate
347*0Sstevel@tonic-gate /*
348*0Sstevel@tonic-gate * If compiled with -DDEBUG=1,
349*0Sstevel@tonic-gate * look for the pathname in the environment
350*0Sstevel@tonic-gate */
351*0Sstevel@tonic-gate
352*0Sstevel@tonic-gate #ifdef DEBUG
353*0Sstevel@tonic-gate if (((path = getenv(OAM_DGROUP)) != NULL) && (*path)) {
354*0Sstevel@tonic-gate if (rtnval = malloc(strlen(path)+1))
355*0Sstevel@tonic-gate (void) strcpy(rtnval, path);
356*0Sstevel@tonic-gate } else {
357*0Sstevel@tonic-gate #endif
358*0Sstevel@tonic-gate /*
359*0Sstevel@tonic-gate * Use the default name.
360*0Sstevel@tonic-gate */
361*0Sstevel@tonic-gate
362*0Sstevel@tonic-gate if (rtnval = malloc(strlen(DGRP_PATH)+1))
363*0Sstevel@tonic-gate (void) strcpy(rtnval, DGRP_PATH);
364*0Sstevel@tonic-gate
365*0Sstevel@tonic-gate #ifdef DEBUG
366*0Sstevel@tonic-gate }
367*0Sstevel@tonic-gate #endif
368*0Sstevel@tonic-gate
369*0Sstevel@tonic-gate /* Finished */
370*0Sstevel@tonic-gate return (rtnval);
371*0Sstevel@tonic-gate }
372*0Sstevel@tonic-gate
373*0Sstevel@tonic-gate /*
374*0Sstevel@tonic-gate * int _opendgrptab(mode)
375*0Sstevel@tonic-gate * char *mode
376*0Sstevel@tonic-gate *
377*0Sstevel@tonic-gate * The _opendgrptab() function opens a device-group table for a command.
378*0Sstevel@tonic-gate *
379*0Sstevel@tonic-gate * Arguments:
380*0Sstevel@tonic-gate * mode The open mode to use to open the file. (i.e. "r" for
381*0Sstevel@tonic-gate * reading, "w" for writing. See FOPEN(BA_OS) in SVID.)
382*0Sstevel@tonic-gate *
383*0Sstevel@tonic-gate * Returns: int
384*0Sstevel@tonic-gate * TRUE if successful, FALSE otherwise
385*0Sstevel@tonic-gate */
386*0Sstevel@tonic-gate
387*0Sstevel@tonic-gate int
_opendgrptab(char * mode)388*0Sstevel@tonic-gate _opendgrptab(char *mode)
389*0Sstevel@tonic-gate {
390*0Sstevel@tonic-gate /* Automatic data */
391*0Sstevel@tonic-gate char *dgrptabname; /* Ptr to the device-group table name */
392*0Sstevel@tonic-gate int rtnval; /* Value to return */
393*0Sstevel@tonic-gate
394*0Sstevel@tonic-gate rtnval = TRUE;
395*0Sstevel@tonic-gate if (dgrptabname = _dgrptabpath()) {
396*0Sstevel@tonic-gate if (oam_dgroup) (void) fclose(oam_dgroup);
397*0Sstevel@tonic-gate if (oam_dgroup = fopen(dgrptabname, mode)) {
398*0Sstevel@tonic-gate xtndcnt = 0;
399*0Sstevel@tonic-gate recnum = 0;
400*0Sstevel@tonic-gate } else rtnval = FALSE; /* :-( */
401*0Sstevel@tonic-gate } else rtnval = FALSE; /* :-( */
402*0Sstevel@tonic-gate return (rtnval);
403*0Sstevel@tonic-gate }
404*0Sstevel@tonic-gate
405*0Sstevel@tonic-gate /*
406*0Sstevel@tonic-gate * struct dgrptabent *_getdgrptabent()
407*0Sstevel@tonic-gate *
408*0Sstevel@tonic-gate * This function returns the next entry in the device-group table.
409*0Sstevel@tonic-gate * If no device-group table is open, it opens the standard device-group
410*0Sstevel@tonic-gate * table and returns the first record in the table.
411*0Sstevel@tonic-gate *
412*0Sstevel@tonic-gate * Arguments: None.
413*0Sstevel@tonic-gate *
414*0Sstevel@tonic-gate * Returns: struct dgrptabent *
415*0Sstevel@tonic-gate * Pointer to the next record in the device-group table, or
416*0Sstevel@tonic-gate * (struct dgrptabent *) NULL if it was unable to open the file or there
417*0Sstevel@tonic-gate * are no more records to read. "errno" reflects the situation. If
418*0Sstevel@tonic-gate * errno is not changed and the function returns NULL, there are no more
419*0Sstevel@tonic-gate * records to read. If errno is set, it indicates the error.
420*0Sstevel@tonic-gate *
421*0Sstevel@tonic-gate * Notes:
422*0Sstevel@tonic-gate * - The caller should set "errno" to 0 before calling this function.
423*0Sstevel@tonic-gate */
424*0Sstevel@tonic-gate
425*0Sstevel@tonic-gate struct dgrptabent *
_getdgrptabent(void)426*0Sstevel@tonic-gate _getdgrptabent(void)
427*0Sstevel@tonic-gate {
428*0Sstevel@tonic-gate /* Automatic data */
429*0Sstevel@tonic-gate struct dgrptabent *ent; /* Dev table entry structure */
430*0Sstevel@tonic-gate struct member *q, *r; /* Tmps for member structs */
431*0Sstevel@tonic-gate char *record; /* Record just read */
432*0Sstevel@tonic-gate char *p; /* Tmp char ptr */
433*0Sstevel@tonic-gate int done; /* TRUE if built an entry */
434*0Sstevel@tonic-gate
435*0Sstevel@tonic-gate
436*0Sstevel@tonic-gate /* Open the device-group table if it's not already open */
437*0Sstevel@tonic-gate if (!oam_dgroup)
438*0Sstevel@tonic-gate if (!_opendgrptab("r"))
439*0Sstevel@tonic-gate return (NULL);
440*0Sstevel@tonic-gate
441*0Sstevel@tonic-gate
442*0Sstevel@tonic-gate /* Get space for the structure we're returning */
443*0Sstevel@tonic-gate if (!(ent = malloc(sizeof (struct dgrptabent)))) {
444*0Sstevel@tonic-gate return (NULL);
445*0Sstevel@tonic-gate }
446*0Sstevel@tonic-gate
447*0Sstevel@tonic-gate done = FALSE;
448*0Sstevel@tonic-gate while (!done && (record = getnextrec())) {
449*0Sstevel@tonic-gate
450*0Sstevel@tonic-gate /* Is this a comment record or a data record */
451*0Sstevel@tonic-gate if (strchr("#\n", *record) ||
452*0Sstevel@tonic-gate isspace((unsigned char)*record)) {
453*0Sstevel@tonic-gate
454*0Sstevel@tonic-gate /*
455*0Sstevel@tonic-gate * Record is a comment record
456*0Sstevel@tonic-gate */
457*0Sstevel@tonic-gate ent->comment = TRUE;
458*0Sstevel@tonic-gate ent->entryno = recnum++;
459*0Sstevel@tonic-gate
460*0Sstevel@tonic-gate /* Alloc space for the comment and save pointer in struct */
461*0Sstevel@tonic-gate if (ent->dataspace = malloc(strlen(record)+1)) {
462*0Sstevel@tonic-gate (void) strcpy(ent->dataspace, record);
463*0Sstevel@tonic-gate } else {
464*0Sstevel@tonic-gate free(ent);
465*0Sstevel@tonic-gate ent = NULL;
466*0Sstevel@tonic-gate }
467*0Sstevel@tonic-gate done = TRUE;
468*0Sstevel@tonic-gate
469*0Sstevel@tonic-gate } else {
470*0Sstevel@tonic-gate
471*0Sstevel@tonic-gate /*
472*0Sstevel@tonic-gate * Record is a data record
473*0Sstevel@tonic-gate */
474*0Sstevel@tonic-gate ent->comment = FALSE;
475*0Sstevel@tonic-gate
476*0Sstevel@tonic-gate /* Extract the device-group name */
477*0Sstevel@tonic-gate if (p = getfld(record, ":")) {
478*0Sstevel@tonic-gate
479*0Sstevel@tonic-gate /* Record is a proper record */
480*0Sstevel@tonic-gate done = TRUE;
481*0Sstevel@tonic-gate ent->entryno = recnum++;
482*0Sstevel@tonic-gate
483*0Sstevel@tonic-gate /* Copy device group name into malloc()ed space */
484*0Sstevel@tonic-gate if (!(ent->name = malloc(strlen(p)+1))) {
485*0Sstevel@tonic-gate
486*0Sstevel@tonic-gate free(ent);
487*0Sstevel@tonic-gate return (NULL);
488*0Sstevel@tonic-gate }
489*0Sstevel@tonic-gate (void) strcpy(ent->name, p);
490*0Sstevel@tonic-gate
491*0Sstevel@tonic-gate /*
492*0Sstevel@tonic-gate * Extract the membership from the membership list
493*0Sstevel@tonic-gate */
494*0Sstevel@tonic-gate
495*0Sstevel@tonic-gate /* Get the 1st member */
496*0Sstevel@tonic-gate ent->dataspace = NULL;
497*0Sstevel@tonic-gate while (((p = getfld(NULL, ",\n")) != NULL) && !(*p))
498*0Sstevel@tonic-gate ;
499*0Sstevel@tonic-gate if (p) {
500*0Sstevel@tonic-gate if (!(q = malloc(sizeof (struct member)))) {
501*0Sstevel@tonic-gate
502*0Sstevel@tonic-gate free(ent->name);
503*0Sstevel@tonic-gate free(ent);
504*0Sstevel@tonic-gate return (NULL);
505*0Sstevel@tonic-gate }
506*0Sstevel@tonic-gate if (!(q->name = malloc(strlen(p)+1))) {
507*0Sstevel@tonic-gate free(q);
508*0Sstevel@tonic-gate free(ent->name);
509*0Sstevel@tonic-gate free((char *)ent);
510*0Sstevel@tonic-gate return (NULL);
511*0Sstevel@tonic-gate }
512*0Sstevel@tonic-gate (void) strcpy(q->name, p);
513*0Sstevel@tonic-gate ent->membership = q;
514*0Sstevel@tonic-gate q->next = NULL;
515*0Sstevel@tonic-gate
516*0Sstevel@tonic-gate /* Get the rest of the members */
517*0Sstevel@tonic-gate while (p = getfld(NULL, ",\n"))
518*0Sstevel@tonic-gate if (*p) {
519*0Sstevel@tonic-gate if (!(r = malloc(sizeof (struct member)))) {
520*0Sstevel@tonic-gate for (q = ent->membership; q; q = r) {
521*0Sstevel@tonic-gate free(q->name);
522*0Sstevel@tonic-gate r = q->next;
523*0Sstevel@tonic-gate free(q);
524*0Sstevel@tonic-gate }
525*0Sstevel@tonic-gate free(ent->name);
526*0Sstevel@tonic-gate free(ent);
527*0Sstevel@tonic-gate return (NULL);
528*0Sstevel@tonic-gate }
529*0Sstevel@tonic-gate if (!(r->name = malloc(strlen(p)+1))) {
530*0Sstevel@tonic-gate free(r);
531*0Sstevel@tonic-gate for (q = ent->membership; q; q = r) {
532*0Sstevel@tonic-gate free(q->name);
533*0Sstevel@tonic-gate r = q->next;
534*0Sstevel@tonic-gate free(q);
535*0Sstevel@tonic-gate }
536*0Sstevel@tonic-gate free(ent->name);
537*0Sstevel@tonic-gate free(ent);
538*0Sstevel@tonic-gate return (NULL);
539*0Sstevel@tonic-gate }
540*0Sstevel@tonic-gate
541*0Sstevel@tonic-gate q->next = r;
542*0Sstevel@tonic-gate (void) strcpy(r->name, p);
543*0Sstevel@tonic-gate r->next = NULL;
544*0Sstevel@tonic-gate q = r;
545*0Sstevel@tonic-gate }
546*0Sstevel@tonic-gate
547*0Sstevel@tonic-gate } else {
548*0Sstevel@tonic-gate /* No members */
549*0Sstevel@tonic-gate ent->membership = NULL;
550*0Sstevel@tonic-gate }
551*0Sstevel@tonic-gate
552*0Sstevel@tonic-gate } /* record contains a group name */
553*0Sstevel@tonic-gate
554*0Sstevel@tonic-gate } /* record is a data record */
555*0Sstevel@tonic-gate
556*0Sstevel@tonic-gate } /* while (!done && there's more records) */
557*0Sstevel@tonic-gate
558*0Sstevel@tonic-gate
559*0Sstevel@tonic-gate /* An entry read? If not, free alloc'd space and return NULL */
560*0Sstevel@tonic-gate if (!done) {
561*0Sstevel@tonic-gate free(ent);
562*0Sstevel@tonic-gate ent = NULL;
563*0Sstevel@tonic-gate }
564*0Sstevel@tonic-gate
565*0Sstevel@tonic-gate /* Finis */
566*0Sstevel@tonic-gate return (ent);
567*0Sstevel@tonic-gate }
568*0Sstevel@tonic-gate
569*0Sstevel@tonic-gate /*
570*0Sstevel@tonic-gate * void _freedgrptabent(dgrptabent)
571*0Sstevel@tonic-gate * struct dgrptabent *dgrptabent;
572*0Sstevel@tonic-gate *
573*0Sstevel@tonic-gate * This function frees space allocated to a device table entry.
574*0Sstevel@tonic-gate *
575*0Sstevel@tonic-gate * Arguments:
576*0Sstevel@tonic-gate * struct dgrptabent *dgrptabent The structure whose space is to be
577*0Sstevel@tonic-gate * freed.
578*0Sstevel@tonic-gate *
579*0Sstevel@tonic-gate * Returns: void
580*0Sstevel@tonic-gate */
581*0Sstevel@tonic-gate
582*0Sstevel@tonic-gate void
_freedgrptabent(struct dgrptabent * ent)583*0Sstevel@tonic-gate _freedgrptabent(struct dgrptabent *ent) /* Structure to free */
584*0Sstevel@tonic-gate {
585*0Sstevel@tonic-gate /*
586*0Sstevel@tonic-gate * Automatic data
587*0Sstevel@tonic-gate */
588*0Sstevel@tonic-gate
589*0Sstevel@tonic-gate struct member *p; /* Structure being freed */
590*0Sstevel@tonic-gate struct member *q; /* Next structure to free */
591*0Sstevel@tonic-gate
592*0Sstevel@tonic-gate /*
593*0Sstevel@tonic-gate * Free the space allocated to the membership structure.
594*0Sstevel@tonic-gate */
595*0Sstevel@tonic-gate
596*0Sstevel@tonic-gate if (!ent->comment) {
597*0Sstevel@tonic-gate if ((q = ent->membership) != NULL) do {
598*0Sstevel@tonic-gate p = q;
599*0Sstevel@tonic-gate q = p->next;
600*0Sstevel@tonic-gate if (p->name) free(p->name);
601*0Sstevel@tonic-gate free(p);
602*0Sstevel@tonic-gate } while (q);
603*0Sstevel@tonic-gate
604*0Sstevel@tonic-gate /* Free the device group name */
605*0Sstevel@tonic-gate if (ent->name) free(ent->name);
606*0Sstevel@tonic-gate }
607*0Sstevel@tonic-gate
608*0Sstevel@tonic-gate /* Free the membership string */
609*0Sstevel@tonic-gate if (ent->dataspace) free(ent->dataspace);
610*0Sstevel@tonic-gate }
611*0Sstevel@tonic-gate
612*0Sstevel@tonic-gate /*
613*0Sstevel@tonic-gate * struct dgrptabent *_getdgrprec(dgroup)
614*0Sstevel@tonic-gate * char *dgroup
615*0Sstevel@tonic-gate *
616*0Sstevel@tonic-gate * Thie _getdgrprec() function returns a pointer to a structure that
617*0Sstevel@tonic-gate * contains the information in the device-group table entry that describes
618*0Sstevel@tonic-gate * the device-group <dgroup>.
619*0Sstevel@tonic-gate *
620*0Sstevel@tonic-gate * Arguments:
621*0Sstevel@tonic-gate * char *dgroup A character-string describing the device-group whose
622*0Sstevel@tonic-gate * record is to be retrieved from the device-group table.
623*0Sstevel@tonic-gate *
624*0Sstevel@tonic-gate * Returns: struct dgrptabent *
625*0Sstevel@tonic-gate * A pointer to a structure describing the device group.
626*0Sstevel@tonic-gate */
627*0Sstevel@tonic-gate
628*0Sstevel@tonic-gate struct dgrptabent *
_getdgrprec(char * dgroup)629*0Sstevel@tonic-gate _getdgrprec(char *dgroup) /* dgroup to search for */
630*0Sstevel@tonic-gate {
631*0Sstevel@tonic-gate /*
632*0Sstevel@tonic-gate * Automatic data
633*0Sstevel@tonic-gate */
634*0Sstevel@tonic-gate
635*0Sstevel@tonic-gate struct dgrptabent *dgrprec; /* Pointer to current record */
636*0Sstevel@tonic-gate int found; /* FLAG, TRUE if found */
637*0Sstevel@tonic-gate
638*0Sstevel@tonic-gate
639*0Sstevel@tonic-gate /*
640*0Sstevel@tonic-gate * Search the device-group table looking for the requested
641*0Sstevel@tonic-gate * device group
642*0Sstevel@tonic-gate */
643*0Sstevel@tonic-gate
644*0Sstevel@tonic-gate _setdgrptab();
645*0Sstevel@tonic-gate errno = 0;
646*0Sstevel@tonic-gate found = FALSE;
647*0Sstevel@tonic-gate while (!found && (dgrprec = _getdgrptabent())) {
648*0Sstevel@tonic-gate if (!dgrprec->comment && strcmp(dgroup, dgrprec->name) == 0)
649*0Sstevel@tonic-gate found = TRUE;
650*0Sstevel@tonic-gate else _freedgrptabent(dgrprec);
651*0Sstevel@tonic-gate }
652*0Sstevel@tonic-gate
653*0Sstevel@tonic-gate /* Set up return codes if we've failed */
654*0Sstevel@tonic-gate if (!found) {
655*0Sstevel@tonic-gate if (errno == 0) errno = EINVAL;
656*0Sstevel@tonic-gate dgrprec = NULL;
657*0Sstevel@tonic-gate }
658*0Sstevel@tonic-gate
659*0Sstevel@tonic-gate /* Finis */
660*0Sstevel@tonic-gate return (dgrprec);
661*0Sstevel@tonic-gate }
662