1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30
31 #include <stdio.h>
32 #include <ctype.h>
33 #include <string.h>
34 #include <stdlib.h>
35 #include <unistd.h>
36 #include <sys/types.h>
37 #include <sys/param.h>
38 #include <sys/stat.h>
39 #include <sys/statvfs.h>
40 #include <limits.h>
41 #include <locale.h>
42 #include <libintl.h>
43 #include <pkgstrct.h>
44 #include "install.h"
45 #include <pkglib.h>
46 #include "libadm.h"
47 #include "libinst.h"
48 #include "pkginstall.h"
49
50 extern struct cfextra **extlist;
51 extern char pkgloc[];
52 extern char instdir[];
53
54 #define LSIZE 256
55 #define LIM_BFREE 150LL
56 #define LIM_FFREE 25LL
57
58 #define WRN_STATVFS "WARNING: unable to stat filesystem mounted on <%s>"
59
60 #define WRN_NOBLKS "The %s filesystem has %llu free blocks. The current " \
61 "installation requires %llu blocks, which includes a " \
62 "required %llu block buffer for open " \
63 "deleted files. %llu more blocks are needed."
64
65 #define WRN_NOFILES "The %s filesystem has %llu free file nodes. The " \
66 "current installation requires %llu file nodes, " \
67 "which includes a required %llu file node buffer " \
68 "for temporary files. %llu more file nodes " \
69 "are needed."
70
71 #define TYPE_BLCK 0
72 #define TYPE_NODE 1
73 static void warn(int type, char *name, fsblkcnt_t need, fsblkcnt_t avail,
74 fsblkcnt_t limit);
75 static int fsys_stat(int n);
76 static int readmap(int *error);
77 static int readspace(char *spacefile, int *error);
78
79 int
dockspace(char * spacefile)80 dockspace(char *spacefile)
81 {
82 struct fstable *fs_tab;
83 int i, error;
84
85 error = 0;
86
87 /*
88 * Also, vanilla SVr4 code used the output from popen()
89 * on the "/etc/mount" command. However, we need to get more
90 * information about mounted filesystems, so we use the C
91 * interfaces to the mount table, which also happens to be
92 * much faster than running another process. Since several
93 * of the pkg commands need access to the mount table, this
94 * code is now in libinst. However, mount table info is needed
95 * at the time the base directory is determined, so the call
96 * to get the mount table information is in main.c
97 */
98
99 if (readmap(&error) || readspace(spacefile, &error))
100 return (-1);
101
102 for (i = 0; fs_tab = get_fs_entry(i); ++i) {
103 if ((!fs_tab->fused) && (!fs_tab->bused))
104 continue; /* not used by us */
105
106 if (fs_tab->bfree < (LIM_BFREE + fs_tab->bused)) {
107 warn(TYPE_BLCK, fs_tab->name, fs_tab->bused,
108 fs_tab->bfree, LIM_BFREE);
109 error++;
110 }
111
112 /* bug id 1091292 */
113 if ((long)fs_tab->ffree == -1L)
114 continue;
115 if (fs_tab->ffree < (LIM_FFREE + fs_tab->fused)) {
116 warn(TYPE_NODE, fs_tab->name, fs_tab->fused,
117 fs_tab->ffree, LIM_FFREE);
118 error++;
119 }
120 }
121 return (error);
122 }
123
124 static void
warn(int type,char * name,fsblkcnt_t need,fsblkcnt_t avail,fsblkcnt_t limit)125 warn(int type, char *name, fsblkcnt_t need, fsblkcnt_t avail, fsblkcnt_t limit)
126 {
127 logerr(gettext("WARNING:"));
128 if (type == TYPE_BLCK) {
129 logerr(gettext(WRN_NOBLKS), name, avail, (need + limit), limit,
130 (need + limit - avail));
131 } else {
132 logerr(gettext(WRN_NOFILES), name, avail, (need + limit), limit,
133 (need + limit - avail));
134 }
135 }
136
137 static int
fsys_stat(int n)138 fsys_stat(int n)
139 {
140 struct statvfs64 svfsb;
141 struct fstable *fs_tab;
142
143 if (n == BADFSYS)
144 return (1);
145
146 fs_tab = get_fs_entry(n);
147
148 /*
149 * At this point, we know we need information
150 * about a particular filesystem, so we can do the
151 * statvfs() now. For performance reasons, we only want to
152 * stat the filesystem once, at the first time we need to,
153 * and so we can key on whether or not we have the
154 * block size for that filesystem.
155 */
156 if (fs_tab->bsize != 0)
157 return (0);
158
159 if (statvfs64(fs_tab->name, &svfsb)) {
160 logerr(gettext(WRN_STATVFS), fs_tab->name);
161 return (1);
162 }
163
164 /*
165 * statvfs returns number of fragment size blocks
166 * so will change this to number of 512 byte blocks
167 */
168 fs_tab->bsize = svfsb.f_bsize;
169 fs_tab->frsize = svfsb.f_frsize;
170 fs_tab->bfree = ((svfsb.f_frsize > 0) ?
171 howmany(svfsb.f_frsize, DEV_BSIZE) :
172 howmany(svfsb.f_bsize, DEV_BSIZE)) * svfsb.f_bavail;
173 fs_tab->ffree = (svfsb.f_favail > 0) ? svfsb.f_favail : svfsb.f_ffree;
174 return (0);
175 }
176
177 /*
178 * This function reads all of the package objects, maps them to their target
179 * filesystems and adds up the amount of space used on each. Wherever you see
180 * "fsys_value", that's the apparent filesystem which could be a temporary
181 * loopback mount for the purpose of constructing the client filesystem. It
182 * isn't necessarily the real target filesystem. Where you see "fsys_base"
183 * that's the real filesystem to which fsys_value may just refer. If this is
184 * installing to a standalone or a server, fsys_value will almost always be
185 * the same as fsys_base.
186 */
187 static int
readmap(int * error)188 readmap(int *error)
189 {
190 struct fstable *fs_tab;
191 struct cfextra *ext;
192 struct cfent *ept;
193 struct stat statbuf;
194 char tpath[PATH_MAX];
195 fsblkcnt_t blk;
196 int i, n;
197
198 /*
199 * Handle the installation files (ftype i) that are in the
200 * pkgmap/eptlist.
201 */
202 for (i = 0; (ext = extlist[i]) != NULL; i++) {
203 ept = &(ext->cf_ent);
204
205 if (ept->ftype != 'i')
206 continue;
207
208 /*
209 * These paths are treated differently from the others
210 * since their full pathnames are not included in the
211 * pkgmap.
212 */
213 if (strcmp(ept->path, "pkginfo") == 0)
214 (void) sprintf(tpath, "%s/%s", pkgloc, ept->path);
215 else
216 (void) sprintf(tpath, "%s/install/%s", pkgloc,
217 ept->path);
218
219 /* If we haven't done an fsys() series, do one */
220 if (ext->fsys_value == BADFSYS)
221 ext->fsys_value = fsys(tpath);
222
223 /*
224 * Now check if this is a base or apparent filesystem. If
225 * it's just apparent, get the resolved filesystem entry,
226 * otherwise, base and value are the same.
227 */
228 if (use_srvr_map_n(ext->fsys_value))
229 ext->fsys_base = resolved_fsys(tpath);
230 else
231 ext->fsys_base = ext->fsys_value;
232
233 if (fsys_stat(ext->fsys_base)) {
234 (*error)++;
235 continue;
236 }
237
238 /*
239 * Don't accumulate space requirements on read-only
240 * remote filesystems.
241 */
242 if (is_remote_fs_n(ext->fsys_value) &&
243 !is_fs_writeable_n(ext->fsys_value))
244 continue;
245
246 fs_tab = get_fs_entry(ext->fsys_base);
247
248 fs_tab->fused++;
249 if (ept->cinfo.size != BADCONT)
250 blk = nblk(ept->cinfo.size,
251 fs_tab->bsize,
252 fs_tab->frsize);
253 else
254 blk = 0;
255 fs_tab->bused += blk;
256 }
257
258 /*
259 * Handle the other files in the eptlist.
260 */
261 for (i = 0; (ext = extlist[i]) != NULL; i++) {
262 ept = &(extlist[i]->cf_ent);
263
264 if (ept->ftype == 'i')
265 continue;
266
267 /*
268 * Don't recalculate package objects that are already in the
269 * table.
270 */
271 if (ext->mstat.preloaded)
272 continue;
273
274 /*
275 * Don't accumulate space requirements on read-only
276 * remote filesystems.
277 */
278 if (is_remote_fs(ept->path, &(ext->fsys_value)) &&
279 !is_fs_writeable(ept->path, &(ext->fsys_value)))
280 continue;
281
282 /*
283 * Now check if this is a base or apparent filesystem. If
284 * it's just apparent, get the resolved filesystem entry,
285 * otherwise, base and value are the same.
286 */
287 if (use_srvr_map_n(ext->fsys_value))
288 ext->fsys_base = resolved_fsys(tpath);
289 else
290 ext->fsys_base = ext->fsys_value;
291
292 /* At this point we know we have a good fsys_base. */
293 if (fsys_stat(ext->fsys_base)) {
294 (*error)++;
295 continue;
296 }
297
298 /*
299 * We have to stat this path based upon it's real location.
300 * If this is a server-remap, ept->path isn't the real
301 * location.
302 */
303 if (use_srvr_map_n(ext->fsys_value))
304 strcpy(tpath, server_map(ept->path, ext->fsys_value));
305 else
306 strcpy(tpath, ept->path);
307
308 fs_tab = get_fs_entry(ext->fsys_base);
309 if (stat(tpath, &statbuf)) {
310 /* path cannot be accessed */
311 fs_tab->fused++;
312 if (strchr("dxs", ept->ftype))
313 blk =
314 nblk(fs_tab->bsize,
315 fs_tab->bsize,
316 fs_tab->frsize);
317 else if (ept->cinfo.size != BADCONT)
318 blk = nblk(ept->cinfo.size,
319 fs_tab->bsize,
320 fs_tab->frsize);
321 else
322 blk = 0;
323 } else {
324 /* path already exists */
325 if (strchr("dxs", ept->ftype))
326 blk = 0;
327 else if (ept->cinfo.size != BADCONT) {
328 fsblkcnt_t new_size, old_size;
329 new_size = nblk(ept->cinfo.size,
330 fs_tab->bsize,
331 fs_tab->frsize);
332 old_size = nblk(statbuf.st_size,
333 fs_tab->bsize,
334 fs_tab->frsize);
335 /*
336 * negative blocks show room freed, but since
337 * order of installation is uncertain show
338 * 0 blocks usage
339 */
340 if (new_size < old_size)
341 blk = 0;
342 else
343 blk = new_size - old_size;
344 } else
345 blk = 0;
346 }
347 fs_tab->bused += blk;
348 }
349 return (0);
350 }
351
352 static int
readspace(char * spacefile,int * error)353 readspace(char *spacefile, int *error)
354 {
355 FILE *fp;
356 char line[LSIZE];
357 long blocks, nodes;
358 int n;
359
360 if (spacefile == NULL)
361 return (0);
362
363 if ((fp = fopen(spacefile, "r")) == NULL) {
364 progerr(gettext("unable to open spacefile %s"), spacefile);
365 return (-1);
366 }
367
368 while (fgets(line, LSIZE, fp)) {
369 struct fstable *fs_tab;
370 char *pt, path[PATH_MAX];
371
372 blocks = nodes = 0;
373 for (pt = line; isspace(*pt); /* void */)
374 pt++;
375 if (*pt == '#' || *pt == '\0')
376 continue;
377
378 (void) sscanf(line, "%s %ld %ld", path, &blocks, &nodes);
379 mappath(2, path);
380 basepath(path, get_basedir(), get_inst_root());
381 canonize(path);
382
383 n = resolved_fsys(path);
384 if (fsys_stat(n)) {
385 (*error)++;
386 continue;
387 }
388
389 /*
390 * Don't accumulate space requirements on read-only
391 * remote filesystems. NOTE: For some reason, this
392 * used to check for !remote && read only. If this
393 * blows up later, then maybe that was correct -- JST
394 */
395 if (is_remote_fs_n(n) && !is_fs_writeable_n(n))
396 continue;
397
398 fs_tab = get_fs_entry(n);
399
400 fs_tab->bused += blocks;
401 fs_tab->fused += nodes;
402 }
403 (void) fclose(fp);
404 return (0);
405 }
406