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 (c) 2017 Peter Tribble.
24 */
25
26 /*
27 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
28 * Use is subject to license terms.
29 */
30
31 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
32 /* All Rights Reserved */
33
34
35 #include <stdio.h>
36 #include <ctype.h>
37 #include <string.h>
38 #include <stdlib.h>
39 #include <unistd.h>
40 #include <sys/types.h>
41 #include <sys/param.h>
42 #include <sys/stat.h>
43 #include <sys/statvfs.h>
44 #include <limits.h>
45 #include <locale.h>
46 #include <libintl.h>
47 #include <pkgstrct.h>
48 #include "install.h"
49 #include <pkglib.h>
50 #include "libadm.h"
51 #include "libinst.h"
52 #include "pkginstall.h"
53
54 extern struct cfextra **extlist;
55 extern char pkgloc[];
56 extern char instdir[];
57
58 #define LSIZE 256
59 #define LIM_BFREE 150LL
60 #define LIM_FFREE 25LL
61
62 #define WRN_STATVFS "WARNING: unable to stat filesystem mounted on <%s>"
63
64 #define WRN_NOBLKS "The %s filesystem has %llu free blocks. The current " \
65 "installation requires %llu blocks, which includes a " \
66 "required %llu block buffer for open " \
67 "deleted files. %llu more blocks are needed."
68
69 #define WRN_NOFILES "The %s filesystem has %llu free file nodes. The " \
70 "current installation requires %llu file nodes, " \
71 "which includes a required %llu file node buffer " \
72 "for temporary files. %llu more file nodes " \
73 "are needed."
74
75 #define TYPE_BLCK 0
76 #define TYPE_NODE 1
77 static void warn(int type, char *name, fsblkcnt_t need, fsblkcnt_t avail,
78 fsblkcnt_t limit);
79 static int fsys_stat(int n);
80 static int readmap(int *error);
81 static int readspace(char *spacefile, int *error);
82
83 int
dockspace(char * spacefile)84 dockspace(char *spacefile)
85 {
86 struct fstable *fs_tab;
87 int i, error;
88
89 error = 0;
90
91 /*
92 * Also, vanilla SVr4 code used the output from popen()
93 * on the "/etc/mount" command. However, we need to get more
94 * information about mounted filesystems, so we use the C
95 * interfaces to the mount table, which also happens to be
96 * much faster than running another process. Since several
97 * of the pkg commands need access to the mount table, this
98 * code is now in libinst. However, mount table info is needed
99 * at the time the base directory is determined, so the call
100 * to get the mount table information is in main.c
101 */
102
103 if (readmap(&error) || readspace(spacefile, &error))
104 return (-1);
105
106 for (i = 0; fs_tab = get_fs_entry(i); ++i) {
107 if ((!fs_tab->fused) && (!fs_tab->bused))
108 continue; /* not used by us */
109
110 if (fs_tab->bfree < (LIM_BFREE + fs_tab->bused)) {
111 warn(TYPE_BLCK, fs_tab->name, fs_tab->bused,
112 fs_tab->bfree, LIM_BFREE);
113 error++;
114 }
115
116 /* bug id 1091292 */
117 if ((long)fs_tab->ffree == -1L)
118 continue;
119 if (fs_tab->ffree < (LIM_FFREE + fs_tab->fused)) {
120 warn(TYPE_NODE, fs_tab->name, fs_tab->fused,
121 fs_tab->ffree, LIM_FFREE);
122 error++;
123 }
124 }
125 return (error);
126 }
127
128 static void
warn(int type,char * name,fsblkcnt_t need,fsblkcnt_t avail,fsblkcnt_t limit)129 warn(int type, char *name, fsblkcnt_t need, fsblkcnt_t avail, fsblkcnt_t limit)
130 {
131 logerr(gettext("WARNING:"));
132 if (type == TYPE_BLCK) {
133 logerr(gettext(WRN_NOBLKS), name, avail, (need + limit), limit,
134 (need + limit - avail));
135 } else {
136 logerr(gettext(WRN_NOFILES), name, avail, (need + limit), limit,
137 (need + limit - avail));
138 }
139 }
140
141 static int
fsys_stat(int n)142 fsys_stat(int n)
143 {
144 struct statvfs64 svfsb;
145 struct fstable *fs_tab;
146
147 if (n == BADFSYS)
148 return (1);
149
150 fs_tab = get_fs_entry(n);
151
152 /*
153 * At this point, we know we need information
154 * about a particular filesystem, so we can do the
155 * statvfs() now. For performance reasons, we only want to
156 * stat the filesystem once, at the first time we need to,
157 * and so we can key on whether or not we have the
158 * block size for that filesystem.
159 */
160 if (fs_tab->bsize != 0)
161 return (0);
162
163 if (statvfs64(fs_tab->name, &svfsb)) {
164 logerr(gettext(WRN_STATVFS), fs_tab->name);
165 return (1);
166 }
167
168 /*
169 * statvfs returns number of fragment size blocks
170 * so will change this to number of 512 byte blocks
171 */
172 fs_tab->bsize = svfsb.f_bsize;
173 fs_tab->frsize = svfsb.f_frsize;
174 fs_tab->bfree = ((svfsb.f_frsize > 0) ?
175 howmany(svfsb.f_frsize, DEV_BSIZE) :
176 howmany(svfsb.f_bsize, DEV_BSIZE)) * svfsb.f_bavail;
177 fs_tab->ffree = (svfsb.f_favail > 0) ? svfsb.f_favail : svfsb.f_ffree;
178 return (0);
179 }
180
181 /*
182 * This function reads all of the package objects, maps them to their target
183 * filesystems and adds up the amount of space used on each. Wherever you see
184 * "fsys_value", that's the apparent filesystem which could be a temporary
185 * loopback mount for the purpose of constructing the client filesystem. It
186 * isn't necessarily the real target filesystem. Where you see "fsys_base"
187 * that's the real filesystem to which fsys_value may just refer. If this is
188 * installing to a standalone or a server, fsys_value will almost always be
189 * the same as fsys_base.
190 */
191 static int
readmap(int * error)192 readmap(int *error)
193 {
194 struct fstable *fs_tab;
195 struct cfextra *ext;
196 struct cfent *ept;
197 struct stat statbuf;
198 char tpath[PATH_MAX];
199 fsblkcnt_t blk;
200 int i;
201
202 /*
203 * Handle the installation files (ftype i) that are in the
204 * pkgmap/eptlist.
205 */
206 for (i = 0; (ext = extlist[i]) != NULL; i++) {
207 ept = &(ext->cf_ent);
208
209 if (ept->ftype != 'i')
210 continue;
211
212 /*
213 * These paths are treated differently from the others
214 * since their full pathnames are not included in the
215 * pkgmap.
216 */
217 if (strcmp(ept->path, "pkginfo") == 0)
218 (void) sprintf(tpath, "%s/%s", pkgloc, ept->path);
219 else
220 (void) sprintf(tpath, "%s/install/%s", pkgloc,
221 ept->path);
222
223 /* If we haven't done an fsys() series, do one */
224 if (ext->fsys_value == BADFSYS)
225 ext->fsys_value = fsys(tpath);
226
227 /*
228 * Now check if this is a base or apparent filesystem. If
229 * it's just apparent, get the resolved filesystem entry,
230 * otherwise, base and value are the same.
231 */
232 if (use_srvr_map_n(ext->fsys_value))
233 ext->fsys_base = resolved_fsys(tpath);
234 else
235 ext->fsys_base = ext->fsys_value;
236
237 if (fsys_stat(ext->fsys_base)) {
238 (*error)++;
239 continue;
240 }
241
242 /*
243 * Don't accumulate space requirements on read-only
244 * remote filesystems.
245 */
246 if (is_remote_fs_n(ext->fsys_value) &&
247 !is_fs_writeable_n(ext->fsys_value))
248 continue;
249
250 fs_tab = get_fs_entry(ext->fsys_base);
251
252 fs_tab->fused++;
253 if (ept->cinfo.size != BADCONT)
254 blk = nblk(ept->cinfo.size,
255 fs_tab->bsize,
256 fs_tab->frsize);
257 else
258 blk = 0;
259 fs_tab->bused += blk;
260 }
261
262 /*
263 * Handle the other files in the eptlist.
264 */
265 for (i = 0; (ext = extlist[i]) != NULL; i++) {
266 ept = &(extlist[i]->cf_ent);
267
268 if (ept->ftype == 'i')
269 continue;
270
271 /*
272 * Don't recalculate package objects that are already in the
273 * table.
274 */
275 if (ext->mstat.preloaded)
276 continue;
277
278 /*
279 * Don't accumulate space requirements on read-only
280 * remote filesystems.
281 */
282 if (is_remote_fs(ept->path, &(ext->fsys_value)) &&
283 !is_fs_writeable(ept->path, &(ext->fsys_value)))
284 continue;
285
286 /*
287 * Now check if this is a base or apparent filesystem. If
288 * it's just apparent, get the resolved filesystem entry,
289 * otherwise, base and value are the same.
290 */
291 if (use_srvr_map_n(ext->fsys_value))
292 ext->fsys_base = resolved_fsys(tpath);
293 else
294 ext->fsys_base = ext->fsys_value;
295
296 /* At this point we know we have a good fsys_base. */
297 if (fsys_stat(ext->fsys_base)) {
298 (*error)++;
299 continue;
300 }
301
302 /*
303 * We have to stat this path based upon it's real location.
304 * If this is a server-remap, ept->path isn't the real
305 * location.
306 */
307 if (use_srvr_map_n(ext->fsys_value))
308 strcpy(tpath, server_map(ept->path, ext->fsys_value));
309 else
310 strcpy(tpath, ept->path);
311
312 fs_tab = get_fs_entry(ext->fsys_base);
313 if (stat(tpath, &statbuf)) {
314 /* path cannot be accessed */
315 fs_tab->fused++;
316 if (strchr("dxs", ept->ftype))
317 blk =
318 nblk(fs_tab->bsize,
319 fs_tab->bsize,
320 fs_tab->frsize);
321 else if (ept->cinfo.size != BADCONT)
322 blk = nblk(ept->cinfo.size,
323 fs_tab->bsize,
324 fs_tab->frsize);
325 else
326 blk = 0;
327 } else {
328 /* path already exists */
329 if (strchr("dxs", ept->ftype))
330 blk = 0;
331 else if (ept->cinfo.size != BADCONT) {
332 fsblkcnt_t new_size, old_size;
333 new_size = nblk(ept->cinfo.size,
334 fs_tab->bsize,
335 fs_tab->frsize);
336 old_size = nblk(statbuf.st_size,
337 fs_tab->bsize,
338 fs_tab->frsize);
339 /*
340 * negative blocks show room freed, but since
341 * order of installation is uncertain show
342 * 0 blocks usage
343 */
344 if (new_size < old_size)
345 blk = 0;
346 else
347 blk = new_size - old_size;
348 } else
349 blk = 0;
350 }
351 fs_tab->bused += blk;
352 }
353 return (0);
354 }
355
356 static int
readspace(char * spacefile,int * error)357 readspace(char *spacefile, int *error)
358 {
359 FILE *fp;
360 char line[LSIZE];
361 long blocks, nodes;
362 int n;
363
364 if (spacefile == NULL)
365 return (0);
366
367 if ((fp = fopen(spacefile, "r")) == NULL) {
368 progerr(gettext("unable to open spacefile %s"), spacefile);
369 return (-1);
370 }
371
372 while (fgets(line, LSIZE, fp)) {
373 struct fstable *fs_tab;
374 char *pt, path[PATH_MAX];
375
376 blocks = nodes = 0;
377 for (pt = line; isspace(*pt); /* void */)
378 pt++;
379 if (*pt == '#' || *pt == '\0')
380 continue;
381
382 (void) sscanf(line, "%s %ld %ld", path, &blocks, &nodes);
383 mappath(2, path);
384 basepath(path, get_basedir(), get_inst_root());
385 canonize(path);
386
387 n = resolved_fsys(path);
388 if (fsys_stat(n)) {
389 (*error)++;
390 continue;
391 }
392
393 /*
394 * Don't accumulate space requirements on read-only
395 * remote filesystems. NOTE: For some reason, this
396 * used to check for !remote && read only. If this
397 * blows up later, then maybe that was correct -- JST
398 */
399 if (is_remote_fs_n(n) && !is_fs_writeable_n(n))
400 continue;
401
402 fs_tab = get_fs_entry(n);
403
404 fs_tab->bused += blocks;
405 fs_tab->fused += nodes;
406 }
407 (void) fclose(fp);
408 return (0);
409 }
410