Bug Summary

File:src/sbin/newfs/newfs.c
Warning:line 449, column 16
Access to field 'd_secsize' results in a dereference of a null pointer (loaded from variable 'lp')

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name newfs.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sbin/newfs/obj -resource-dir /usr/local/llvm16/lib/clang/16 -D MFS -I /usr/src/sbin/newfs/../mount -internal-isystem /usr/local/llvm16/lib/clang/16/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/sbin/newfs/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fno-jump-tables -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/scan/2024-01-11-140451-98009-1 -x c /usr/src/sbin/newfs/newfs.c
1/* $OpenBSD: newfs.c,v 1.118 2024/01/09 03:16:00 guenther Exp $ */
2/* $NetBSD: newfs.c,v 1.20 1996/05/16 07:13:03 thorpej Exp $ */
3
4/*
5 * Copyright (c) 2002 Networks Associates Technology, Inc.
6 * All rights reserved.
7 *
8 * This software was developed for the FreeBSD Project by Marshall
9 * Kirk McKusick and Network Associates Laboratories, the Security
10 * Research Division of Network Associates, Inc. under DARPA/SPAWAR
11 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
12 * research program.
13 *
14 * Copyright (c) 1983, 1989, 1993, 1994
15 * The Regents of the University of California. All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
19 * are met:
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution.
25 * 3. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 */
41
42#include <sys/param.h> /* DEV_BSIZE MAXBSIZE */
43#include <sys/types.h>
44#include <sys/stat.h>
45#include <sys/ioctl.h>
46#include <sys/dkio.h>
47#include <sys/disklabel.h>
48#include <sys/mount.h>
49#include <sys/resource.h>
50#include <sys/sysctl.h>
51#include <sys/wait.h>
52
53#include <ufs/ufs/dinode.h>
54#include <ufs/ufs/dir.h>
55#include <ufs/ffs/fs.h>
56
57#include <ctype.h>
58#include <err.h>
59#include <errno(*__errno()).h>
60#include <fcntl.h>
61#include <paths.h>
62#include <stdarg.h>
63#include <stdio.h>
64#include <stdlib.h>
65#include <string.h>
66#include <syslog.h>
67#include <unistd.h>
68#include <limits.h>
69#include <signal.h>
70#include <util.h>
71
72#include "mntopts.h"
73#include "pathnames.h"
74
75#define MINIMUM(a, b)(((a) < (b)) ? (a) : (b)) (((a) < (b)) ? (a) : (b))
76#define MAXIMUM(a, b)(((a) > (b)) ? (a) : (b)) (((a) > (b)) ? (a) : (b))
77
78struct mntopt mopts[] = {
79 MOPT_STDOPTS{ "userquota", 0, 0x02 | 0x04 | 0x10 }, { "groupquota", 0, 0x02
| 0x04 | 0x10 }, { "ro", 0x00000001, 0x02 }, { "rw", 0x00000001
, 0x01 | 0x02 }, { "net", 0, 0x02 }, { "auto", 0, 0x02 }, { "accesstime"
, 0x00008000, 0x01 | 0x02 }, { "atime", 0x00008000, 0x01 | 0x02
}, { "dev", 0x00000010, 0x01 | 0x02 }, { "exec", 0x00000004,
0x01 | 0x02 }, { "suid", 0x00000008, 0x01 | 0x02 }, { "rdonly"
, 0x00000001, 0x02 },
80 MOPT_WXALLOWED{ "wxallowed", 0x00000800, 0x02 },
81 MOPT_NOPERM{ "perm", 0x00000020, 0x01 | 0x02 },
82 MOPT_ASYNC{ "async", 0x00000040, 0x02 },
83 MOPT_UPDATE{ "update", 0x00010000, 0x02 },
84 MOPT_FORCE{ "force", 0x00080000, 0x02 },
85 { NULL((void *)0) },
86};
87
88void fatal(const char *fmt, ...)
89 __attribute__((__format__ (printf, 1, 2)))
90 __attribute__((__nonnull__ (1)));
91__dead__attribute__((__noreturn__)) void usage(void);
92void mkfs(struct partition *, char *, int, int, mode_t, uid_t, gid_t);
93void getphysmem(void);
94void rewritelabel(char *, int, struct disklabel *);
95u_short dkcksum(struct disklabel *);
96
97/*
98 * The following two constants set the default block and fragment sizes.
99 * Both constants must be a power of 2 and meet the following constraints:
100 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE
101 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE
102 * DESBLKSIZE / DESFRAGSIZE <= 8
103 */
104#define DFL_FRAGSIZE2048 2048
105#define DFL_BLKSIZE16384 16384
106
107/*
108 * MAXBLKPG determines the maximum number of data blocks which are
109 * placed in a single cylinder group. The default is one indirect
110 * block worth of data blocks.
111 */
112#define MAXBLKPG_FFS1(bsize)((bsize) / sizeof(int32_t)) ((bsize) / sizeof(int32_t))
113#define MAXBLKPG_FFS2(bsize)((bsize) / sizeof(int64_t)) ((bsize) / sizeof(int64_t))
114
115/*
116 * Each file system has a number of inodes statically allocated.
117 * We allocate one inode slot per NFPI fragments, expecting this
118 * to be far more than we will ever need.
119 */
120#define NFPI4 4
121
122int mfs; /* run as the memory based filesystem */
123int Nflag; /* run without writing file system */
124int Oflag = 2; /* 1 = 4.4BSD ffs, 2 = ffs2 */
125daddr_t fssize; /* file system size in 512-byte blocks */
126long long sectorsize; /* bytes/sector */
127int fsize = 0; /* fragment size */
128int bsize = 0; /* block size */
129int maxfrgspercg = INT_MAX0x7fffffff; /* maximum fragments per cylinder group */
130int minfree = MINFREE5; /* free space threshold */
131int opt = DEFAULTOPT0; /* optimization preference (space or time) */
132int reqopt = -1; /* opt preference has not been specified */
133int density; /* number of bytes per inode */
134int maxbpg; /* maximum blocks per file in a cyl group */
135int avgfilesize = AVFILESIZ16384;/* expected average file size */
136int avgfilesperdir = AFPDIR64;/* expected number of files per directory */
137int mntflags = MNT_ASYNC0x00000040; /* flags to be passed to mount */
138int quiet = 0; /* quiet flag */
139caddr_t membase; /* start address of memory based filesystem */
140char *disktype;
141int unlabeled;
142
143extern char *__progname;
144struct disklabel *getdisklabel(char *, int);
145
146#ifdef MFS1
147static void waitformount(char *, pid_t);
148static int do_exec(const char *, const char *, char *const[]);
149static int isdir(const char *);
150static void copy(char *, char *);
151static int gettmpmnt(char *, size_t);
152#endif
153
154int64_t physmem;
155
156void
157getphysmem(void)
158{
159 int mib[] = { CTL_HW6, HW_PHYSMEM6419 };
160 size_t len = sizeof(physmem);
161
162 if (sysctl(mib, 2, &physmem, &len, NULL((void *)0), 0) != 0)
163 err(1, "can't get physmem");
164}
165
166int
167main(int argc, char *argv[])
168{
169 int ch;
170 struct partition *pp;
171 struct disklabel *lp;
172 struct disklabel mfsfakelabel;
173 struct partition oldpartition;
174 struct stat st;
175 struct statfs *mp;
176 struct rlimit rl;
177 int fsi = -1, oflagset = 0, fso, len, n, maxpartitions;
178 char *cp = NULL((void *)0), *s1, *s2, *special, *opstring, *realdev;
179#ifdef MFS1
180 char mountfromname[BUFSIZ1024];
181 char *pop = NULL((void *)0), node[PATH_MAX1024];
182 pid_t pid;
183 struct stat mountpoint;
184#endif
185 uid_t mfsuid = 0;
186 gid_t mfsgid = 0;
187 mode_t mfsmode = 0;
188 char *fstype = NULL((void *)0);
189 char **saveargv = argv;
190 int ffsflag = 1;
191 const char *errstr;
192 long long fssize_input = 0;
193 int fssize_usebytes = 0;
194 int defaultfsize;
195 u_int64_t nsecs;
196
197 if (strstr(__progname, "mfs"))
1
Assuming the condition is false
→
2
←
Taking false branch
→
198 mfs = Nflag = quiet = Oflag = 1;
199
200 getphysmem();
201 maxpartitions = getmaxpartitions();
202 if (maxpartitions > 26)
3
←
Assuming 'maxpartitions' is <= 26
→
203 fatal("insane maxpartitions value %d", maxpartitions);
204
205 opstring = mfs ?
4
←
Taking false branch
→
5
←
Assuming 'mfs' is not equal to 0
→
6
←
'?' condition is true
→
206 "O:P:T:b:c:e:f:i:m:o:s:" :
207 "NO:S:T:b:c:e:f:g:h:i:m:o:qs:t:";
208 while ((ch = getopt(argc, argv, opstring)) != -1) {
7
←
Assuming the condition is false
→
8
←
Loop condition is false. Execution continues on line 319
→
209 switch (ch) {
210 case 'N':
211 Nflag = 1;
212 break;
213 case 'O':
214 Oflag = strtonum(optarg, 1, 2, &errstr);
215 if (errstr)
216 fatal("%s: invalid ffs version", optarg);
217 oflagset = 1;
218 break;
219 case 'S':
220 if (scan_scaled(optarg, &sectorsize) == -1 ||
221 sectorsize <= 0 || (sectorsize % DEV_BSIZE(1 << 9)))
222 fatal("sector size invalid: %s", optarg);
223 break;
224 case 'T':
225 disktype = optarg;
226 break;
227 case 'b':
228 bsize = strtonum(optarg, MINBSIZE4096, MAXBSIZE(64 * 1024), &errstr);
229 if (errstr)
230 fatal("block size is %s: %s", errstr, optarg);
231 break;
232 case 'c':
233 maxfrgspercg = strtonum(optarg, 1, INT_MAX0x7fffffff, &errstr);
234 if (errstr)
235 fatal("fragments per cylinder group is %s: %s",
236 errstr, optarg);
237 break;
238 case 'e':
239 maxbpg = strtonum(optarg, 1, INT_MAX0x7fffffff, &errstr);
240 if (errstr)
241 fatal("blocks per file in a cylinder group is"
242 " %s: %s", errstr, optarg);
243 break;
244 case 'f':
245 fsize = strtonum(optarg, MINBSIZE4096 / MAXFRAG8, MAXBSIZE(64 * 1024),
246 &errstr);
247 if (errstr)
248 fatal("fragment size is %s: %s",
249 errstr, optarg);
250 break;
251 case 'g':
252 avgfilesize = strtonum(optarg, 1, INT_MAX0x7fffffff, &errstr);
253 if (errstr)
254 fatal("average file size is %s: %s",
255 errstr, optarg);
256 break;
257 case 'h':
258 avgfilesperdir = strtonum(optarg, 1, INT_MAX0x7fffffff, &errstr);
259 if (errstr)
260 fatal("average files per dir is %s: %s",
261 errstr, optarg);
262 break;
263 case 'i':
264 density = strtonum(optarg, 1, INT_MAX0x7fffffff, &errstr);
265 if (errstr)
266 fatal("bytes per inode is %s: %s",
267 errstr, optarg);
268 break;
269 case 'm':
270 minfree = strtonum(optarg, 0, 99, &errstr);
271 if (errstr)
272 fatal("free space %% is %s: %s",
273 errstr, optarg);
274 break;
275 case 'o':
276 if (mfs)
277 getmntopts(optarg, mopts, &mntflags);
278 else {
279 if (strcmp(optarg, "space") == 0)
280 reqopt = opt = FS_OPTSPACE1;
281 else if (strcmp(optarg, "time") == 0)
282 reqopt = opt = FS_OPTTIME0;
283 else
284 fatal("%s: unknown optimization "
285 "preference: use `space' or `time'.",
286 optarg);
287 }
288 break;
289 case 'q':
290 quiet = 1;
291 break;
292 case 's':
293 if (scan_scaled(optarg, &fssize_input) == -1 ||
294 fssize_input <= 0)
295 fatal("file system size invalid: %s", optarg);
296 fssize_usebytes = 0; /* in case of multiple -s */
297 for (s1 = optarg; *s1 != '\0'; s1++)
298 if (isalpha((unsigned char)*s1)) {
299 fssize_usebytes = 1;
300 break;
301 }
302 break;
303 case 't':
304 fstype = optarg;
305 if (strcmp(fstype, "ffs"))
306 ffsflag = 0;
307 break;
308#ifdef MFS1
309 case 'P':
310 pop = optarg;
311 break;
312#endif
313 default:
314 usage();
315 }
316 if (!ffsflag)
317 break;
318 }
319 argc -= optind;
320 argv += optind;
321
322 if (ffsflag
8.1
'ffsflag' is 1
 && argc - mfs != 1)
9
←
Assuming the condition is false
→
10
←
Taking false branch
→
323 usage();
324
325 if (mfs
10.1
'mfs' is not equal to 0
) {
11
←
Taking true branch
→
326 /* Increase our data size to the max */
327 if (getrlimit(RLIMIT_DATA2, &rl) == 0) {
12
←
Assuming the condition is false
→
13
←
Taking false branch
→
328 rl.rlim_cur = rl.rlim_max;
329 (void)setrlimit(RLIMIT_DATA2, &rl);
330 }
331 }
332
333 special = argv[0];
334
335 if (!mfs
13.1
'mfs' is not equal to 0
) {
336 char execname[PATH_MAX1024], name[PATH_MAX1024];
337
338 if (fstype == NULL((void *)0))
339 fstype = readlabelfs(special, 0);
340 if (fstype != NULL((void *)0) && strcmp(fstype, "ffs")) {
341 snprintf(name, sizeof name, "newfs_%s", fstype);
342 saveargv[0] = name;
343 snprintf(execname, sizeof execname, "%s/newfs_%s",
344 _PATH_SBIN"/sbin", fstype);
345 (void)execv(execname, saveargv);
346 snprintf(execname, sizeof execname, "%s/newfs_%s",
347 _PATH_USRSBIN"/usr/sbin", fstype);
348 (void)execv(execname, saveargv);
349 err(1, "%s not found", name);
350 }
351 }
352
353 if (mfs
13.2
'mfs' is not equal to 0
 && !strcmp(special, "swap")) {
14
←
Assuming the condition is false
→
15
←
Taking false branch
→
354 /*
355 * it's an MFS, mounted on "swap." fake up a label.
356 * XXX XXX XXX
357 */
358 fso = -1; /* XXX; normally done below. */
359
360 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel));
361 mfsfakelabel.d_secsize = 512;
362 mfsfakelabel.d_nsectors = 64;
363 mfsfakelabel.d_ntracks = 16;
364 mfsfakelabel.d_ncylinders = 16;
365 mfsfakelabel.d_secpercyl = 1024;
366 DL_SETDSIZE(&mfsfakelabel, 16384)do { u_int64_t __x = (16384); (&mfsfakelabel)->d_secperunith
= __x >> 32; (&mfsfakelabel)->d_secperunit = __x
; } while (0);
367 mfsfakelabel.d_npartitions = 1;
368 mfsfakelabel.d_version = 1;
369 DL_SETPSIZE(&mfsfakelabel.d_partitions[0], 16384)do { u_int64_t __x = (16384); (&mfsfakelabel.d_partitions
[0])->p_sizeh = __x >> 32; (&mfsfakelabel.d_partitions
[0])->p_size = __x; } while (0);
370 mfsfakelabel.d_partitions[0].p_fragblock =
371 DISKLABELV1_FFS_FRAGBLOCK(1024, 8)((1024) * (8) == 0 ? 0 : (((ffs((1024) * (8)) - 13) << 3
) | (ffs(8))));
372 mfsfakelabel.d_partitions[0].p_cpg = 16;
373
374 lp = &mfsfakelabel;
375 pp = &mfsfakelabel.d_partitions[0];
376
377 goto havelabel;
378 }
379 if (Nflag) {
16
←
Assuming 'Nflag' is not equal to 0
→
17
←
Taking true branch
→
380 fso = -1;
381 } else {
382 fso = opendev(special, O_WRONLY0x0001, 0, &realdev);
383 if (fso == -1)
384 fatal("%s: %s", special, strerror(errno(*__errno())));
385 special = realdev;
386
387 /* Bail if target special is mounted */
388 n = getmntinfo(&mp, MNT_NOWAIT2);
389 if (n == 0)
390 fatal("%s: getmntinfo: %s", special, strerror(errno(*__errno())));
391
392 len = sizeof(_PATH_DEV"/dev/") - 1;
393 s1 = special;
394 if (strncmp(_PATH_DEV"/dev/", s1, len) == 0)
395 s1 += len;
396
397 while (--n >= 0) {
398 s2 = mp->f_mntfromname;
399 if (strncmp(_PATH_DEV"/dev/", s2, len) == 0) {
400 s2 += len - 1;
401 *s2 = 'r';
402 }
403 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0)
404 fatal("%s is mounted on %s",
405 special, mp->f_mntonname);
406 ++mp;
407 }
408 }
409 if (mfs
17.1
'mfs' is not equal to 0
 && disktype != NULL((void *)0)) {
18
←
Assuming 'disktype' is not equal to NULL
→
19
←
Taking true branch
→
410 lp = (struct disklabel *)getdiskbyname(disktype);
20
←
Value assigned to 'lp'
→
411 if (lp == NULL((void *)0))
21
←
Assuming 'lp' is equal to NULL
→
22
←
Taking true branch
→
412 fatal("%s: unknown disk type", disktype);
413 pp = &lp->d_partitions[1];
414 } else {
415 fsi = opendev(special, O_RDONLY0x0000, 0, NULL((void *)0));
416 if (fsi == -1)
417 fatal("%s: %s", special, strerror(errno(*__errno())));
418 if (fstat(fsi, &st) == -1)
419 fatal("%s: %s", special, strerror(errno(*__errno())));
420 if (!mfs) {
421 if (S_ISBLK(st.st_mode)((st.st_mode & 0170000) == 0060000))
422 fatal("%s: block device", special);
423 if (!S_ISCHR(st.st_mode)((st.st_mode & 0170000) == 0020000))
424 warnx("%s: not a character-special device",
425 special);
426 }
427 if (*argv[0] == '\0')
428 fatal("empty partition name supplied");
429 cp = argv[0] + strlen(argv[0]) - 1;
430 if ((*cp < 'a' || *cp > ('a' + maxpartitions - 1))
431 && !isdigit((unsigned char)*cp))
432 fatal("%s: can't figure out file system partition",
433 argv[0]);
434 lp = getdisklabel(special, fsi);
435 if (!mfs) {
436 if (pledge("stdio disklabel tty", NULL((void *)0)) == -1)
437 err(1, "pledge");
438 }
439 if (isdigit((unsigned char)*cp))
440 pp = &lp->d_partitions[0];
441 else
442 pp = &lp->d_partitions[*cp - 'a'];
443 if (DL_GETPSIZE(pp)(((u_int64_t)(pp)->p_sizeh << 32) + (pp)->p_size) == 0)
444 fatal("%s: `%c' partition is unavailable",
445 argv[0], *cp);
446 }
447havelabel:
448 if (sectorsize == 0) {
23
←
Assuming 'sectorsize' is equal to 0
→
24
←
Taking true branch
→
449 sectorsize = lp->d_secsize;
25
←
Access to field 'd_secsize' results in a dereference of a null pointer (loaded from variable 'lp')
450 if (sectorsize <= 0)
451 fatal("%s: no default sector size", argv[0]);
452 }
453
454 if (fssize_usebytes) {
455 nsecs = fssize_input / sectorsize;
456 if (fssize_input % sectorsize != 0)
457 nsecs++;
458 } else if (fssize_input == 0)
459 nsecs = DL_GETPSIZE(pp)(((u_int64_t)(pp)->p_sizeh << 32) + (pp)->p_size);
460 else
461 nsecs = fssize_input;
462
463 if (nsecs > DL_GETPSIZE(pp)(((u_int64_t)(pp)->p_sizeh << 32) + (pp)->p_size) && !mfs)
464 fatal("%s: maximum file system size on the `%c' partition is "
465 "%llu sectors", argv[0], *cp, DL_GETPSIZE(pp)(((u_int64_t)(pp)->p_sizeh << 32) + (pp)->p_size));
466
467 /* Can't use DL_SECTOBLK() because sectorsize may not be from label! */
468 fssize = nsecs * (sectorsize / DEV_BSIZE(1 << 9));
469 if (oflagset == 0 && fssize >= INT_MAX0x7fffffff)
470 Oflag = 2; /* FFS2 */
471 defaultfsize = fsize == 0;
472 if (fsize == 0) {
473 fsize = DISKLABELV1_FFS_FSIZE(pp->p_fragblock)(((pp->p_fragblock) == 0 ? 0 : (1 << (((pp->p_fragblock
) & 0x07) - 1))) == 0 ? 0 : (((pp->p_fragblock) == 0 ?
0 : (1 << (((pp->p_fragblock) >> 3) + 12))) /
((pp->p_fragblock) == 0 ? 0 : (1 << (((pp->p_fragblock
) & 0x07) - 1)))));
474 if (fsize <= 0)
475 fsize = MAXIMUM(DFL_FRAGSIZE, lp->d_secsize)(((2048) > (lp->d_secsize)) ? (2048) : (lp->d_secsize
));
476 }
477 if (bsize == 0) {
478 bsize = DISKLABELV1_FFS_BSIZE(pp->p_fragblock)((pp->p_fragblock) == 0 ? 0 : (1 << (((pp->p_fragblock
) >> 3) + 12)));
479 if (bsize <= 0)
480 bsize = MINIMUM(DFL_BLKSIZE, 8 * fsize)(((16384) < (8 * fsize)) ? (16384) : (8 * fsize));
481 }
482 if (density == 0) {
483 density = NFPI4 * fsize;
484 /* large sectors lead to fewer inodes due to large fsize,
485 compensate */
486 if (defaultfsize && sectorsize > DEV_BSIZE(1 << 9))
487 density /= 2;
488 }
489 if (minfree < MINFREE5 && opt != FS_OPTSPACE1 && reqopt == -1) {
490 warnx("warning: changing optimization to space "
491 "because minfree is less than %d%%\n", MINFREE5);
492 opt = FS_OPTSPACE1;
493 }
494 if (maxbpg == 0) {
495 if (Oflag <= 1)
496 maxbpg = MAXBLKPG_FFS1(bsize)((bsize) / sizeof(int32_t));
497 else
498 maxbpg = MAXBLKPG_FFS2(bsize)((bsize) / sizeof(int64_t));
499 }
500 oldpartition = *pp;
501#ifdef MFS1
502 if (mfs) {
503 if (realpath(argv[1], node) == NULL((void *)0))
504 err(1, "realpath %s", argv[1]);
505 if (stat(node, &mountpoint) == -1)
506 err(ECANCELED88, "stat %s", node);
507 mfsuid = mountpoint.st_uid;
508 mfsgid = mountpoint.st_gid;
509 mfsmode = mountpoint.st_mode & ALLPERMS(0004000|0002000|0001000|0000700|0000070|0000007);
510 }
511#endif
512
513 mkfs(pp, special, fsi, fso, mfsmode, mfsuid, mfsgid);
514 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition)))
515 rewritelabel(special, fso, lp);
516 if (!Nflag)
517 close(fso);
518 if (fsi != -1)
519 close(fsi);
520#ifdef MFS1
521 if (mfs) {
522 struct mfs_args args;
523 char tmpnode[PATH_MAX1024];
524
525 if (pop != NULL((void *)0) && gettmpmnt(tmpnode, sizeof(tmpnode)) == 0)
526 errx(1, "Cannot create tmp mountpoint for -P");
527 memset(&args, 0, sizeof(args));
528 args.base = membase;
529 args.size = fssize * DEV_BSIZE(1 << 9);
530 args.export_info.ex_root = -2;
531 if (mntflags & MNT_RDONLY0x00000001)
532 args.export_info.ex_flags = MNT_EXRDONLY0x00000080;
533 if (mntflags & MNT_NOPERM0x00000020)
534 mntflags |= MNT_NODEV0x00000010 | MNT_NOEXEC0x00000004;
535
536 switch (pid = fork()) {
537 case -1:
538 err(10, "mfs");
539 case 0:
540 snprintf(mountfromname, sizeof(mountfromname),
541 "mfs:%d", getpid());
542 break;
543 default:
544 if (pop != NULL((void *)0)) {
545 waitformount(tmpnode, pid);
546 copy(pop, tmpnode);
547 unmount(tmpnode, 0);
548 rmdir(tmpnode);
549 }
550 waitformount(node, pid);
551 exit(0);
552 /* NOTREACHED */
553 }
554
555 (void) setsid();
556 (void) close(0);
557 (void) close(1);
558 (void) close(2);
559 (void) chdir("/");
560
561 args.fspec = mountfromname;
562 if (pop != NULL((void *)0)) {
563 int tmpflags = mntflags & ~MNT_RDONLY0x00000001;
564 if (mount(MOUNT_MFS"mfs", tmpnode, tmpflags, &args) == -1)
565 exit(errno(*__errno())); /* parent prints message */
566 }
567 if (mount(MOUNT_MFS"mfs", node, mntflags, &args) == -1)
568 exit(errno(*__errno())); /* parent prints message */
569 }
570#endif
571 exit(0);
572}
573
574struct disklabel *
575getdisklabel(char *s, int fd)
576{
577 static struct disklabel lab;
578
579 if (ioctl(fd, DIOCGDINFO((unsigned long)0x40000000 | ((sizeof(struct disklabel) &
0x1fff) << 16) | ((('d')) << 8) | ((101))), (char *)&lab) == -1) {
580 if (disktype != NULL((void *)0)) {
581 struct disklabel *lp;
582
583 unlabeled++;
584 lp = getdiskbyname(disktype);
585 if (lp == NULL((void *)0))
586 fatal("%s: unknown disk type", disktype);
587 return (lp);
588 }
589 warn("ioctl (GDINFO)");
590 fatal("%s: can't read disk label; disk type must be specified",
591 s);
592 }
593 return (&lab);
594}
595
596void
597rewritelabel(char *s, int fd, struct disklabel *lp)
598{
599 if (unlabeled)
600 return;
601
602 lp->d_checksum = 0;
603 lp->d_checksum = dkcksum(lp);
604 if (ioctl(fd, DIOCWDINFO((unsigned long)0x80000000 | ((sizeof(struct disklabel) &
0x1fff) << 16) | ((('d')) << 8) | ((103))), (char *)lp) == -1) {
605 warn("ioctl (WDINFO)");
606 fatal("%s: can't rewrite disk label", s);
607 }
608}
609
610void
611fatal(const char *fmt, ...)
612{
613 va_list ap;
614
615 va_start(ap, fmt)__builtin_va_start((ap), fmt);
616 if (fcntl(STDERR_FILENO2, F_GETFL3) == -1) {
617 openlog(__progname, LOG_CONS0x02, LOG_DAEMON(3<<3));
618 vsyslog(LOG_ERR3, fmt, ap);
619 closelog();
620 } else {
621 vwarnx(fmt, ap);
622 }
623 va_end(ap)__builtin_va_end((ap));
624 exit(1);
625 /*NOTREACHED*/
626}
627
628__dead__attribute__((__noreturn__)) void
629usage(void)
630{
631 extern char *__progname;
632
633 if (mfs) {
634 fprintf(stderr(&__sF[2]),
635 "usage: %s [-b block-size] [-c fragments-per-cylinder-group] "
636 "[-e maxbpg]\n"
637 "\t[-f frag-size] [-i bytes] [-m free-space] [-o options] "
638 "[-P file]\n"
639 "\t[-s size] special node\n",
640 __progname);
641 } else {
642 fprintf(stderr(&__sF[2]),
643 "usage: %s [-Nq] [-b block-size] "
644 "[-c fragments-per-cylinder-group] [-e maxbpg]\n"
645 "\t[-f frag-size] [-g avgfilesize] [-h avgfpdir] [-i bytes]\n"
646 "\t[-m free-space] [-O filesystem-format] [-o optimization]\n"
647 "\t[-S sector-size] [-s size] [-T disktype] [-t fstype] "
648 "special\n",
649 __progname);
650 }
651
652 exit(1);
653}
654
655#ifdef MFS1
656
657static void
658waitformount(char *node, pid_t pid)
659{
660 char mountfromname[BUFSIZ1024];
661 struct statfs sf;
662 int status;
663 pid_t res;
664
665 snprintf(mountfromname, sizeof(mountfromname), "mfs:%d", pid);
666 for (;;) {
667 /*
668 * spin until the mount succeeds
669 * or the child exits
670 */
671 usleep(1);
672
673 /*
674 * XXX Here is a race condition: another process
675 * can mount a filesystem which hides our
676 * ramdisk before we see the success.
677 */
678 if (statfs(node, &sf) == -1)
679 err(ECANCELED88, "statfs %s", node);
680 if (!strcmp(sf.f_mntfromname, mountfromname) &&
681 !strncmp(sf.f_mntonname, node,
682 MNAMELEN90) &&
683 !strcmp(sf.f_fstypename, "mfs")) {
684 return;
685 }
686 res = waitpid(pid, &status, WNOHANG0x01);
687 if (res == -1)
688 err(EDEADLK11, "waitpid");
689 if (res != pid)
690 continue;
691 if (WIFEXITED(status)(((status) & 0177) == 0)) {
692 if (WEXITSTATUS(status)(int)(((unsigned)(status) >> 8) & 0xff) == 0)
693 exit(0);
694 errx(1, "%s: mount: %s", node,
695 strerror(WEXITSTATUS(status)(int)(((unsigned)(status) >> 8) & 0xff)));
696 } else
697 errx(EDEADLK11, "abnormal termination");
698 }
699}
700
701static int
702do_exec(const char *dir, const char *cmd, char *const argv[])
703{
704 pid_t pid;
705 int ret, status;
706 sig_t intsave, quitsave;
707
708 switch (pid = fork()) {
709 case -1:
710 err(1, "fork");
711 case 0:
712 if (dir != NULL((void *)0) && chdir(dir) != 0)
713 err(1, "chdir");
714 if (execv(cmd, argv) != 0)
715 err(1, "%s", cmd);
716 break;
717 default:
718 intsave = signal(SIGINT2, SIG_IGN(void (*)(int))1);
719 quitsave = signal(SIGQUIT3, SIG_IGN(void (*)(int))1);
720 for (;;) {
721 ret = waitpid(pid, &status, 0);
722 if (ret == -1)
723 err(11, "waitpid");
724 if (WIFEXITED(status)(((status) & 0177) == 0)) {
725 status = WEXITSTATUS(status)(int)(((unsigned)(status) >> 8) & 0xff);
726 if (status != 0)
727 warnx("%s: exited", cmd);
728 break;
729 } else if (WIFSIGNALED(status)(((status) & 0177) != 0177 && ((status) & 0177
) != 0)) {
730 warnx("%s: %s", cmd,
731 strsignal(WTERMSIG(status)(((status) & 0177))));
732 status = 1;
733 break;
734 }
735 }
736 signal(SIGINT2, intsave);
737 signal(SIGQUIT3, quitsave);
738 return (status);
739 }
740 /* NOTREACHED */
741 return (-1);
742}
743
744static int
745isdir(const char *path)
746{
747 struct stat st;
748
749 if (stat(path, &st) != 0)
750 err(1, "cannot stat %s", path);
751 if (!S_ISDIR(st.st_mode)((st.st_mode & 0170000) == 0040000) && !S_ISBLK(st.st_mode)((st.st_mode & 0170000) == 0060000))
752 errx(1, "%s: not a dir or a block device", path);
753 return (S_ISDIR(st.st_mode)((st.st_mode & 0170000) == 0040000));
754}
755
756static void
757copy(char *src, char *dst)
758{
759 int ret, dir, created = 0;
760 struct ufs_args mount_args;
761 char mountpoint[MNAMELEN90];
762 char *const argv[] = { "pax", "-rw", "-pe", ".", dst, NULL((void *)0) } ;
763
764 dir = isdir(src);
765 if (dir)
766 strlcpy(mountpoint, src, sizeof(mountpoint));
767 else {
768 created = gettmpmnt(mountpoint, sizeof(mountpoint));
769 memset(&mount_args, 0, sizeof(mount_args));
770 mount_args.fspec = src;
771 ret = mount(MOUNT_FFS"ffs", mountpoint, MNT_RDONLY0x00000001, &mount_args);
772 if (ret != 0) {
773 int saved_errno = errno(*__errno());
774 if (created && rmdir(mountpoint) != 0)
775 warn("rmdir %s", mountpoint);
776 if (unmount(dst, 0) != 0)
777 warn("unmount %s", dst);
778 errc(1, saved_errno, "mount %s %s", src, mountpoint);
779 }
780 }
781 ret = do_exec(mountpoint, "/bin/pax", argv);
782 if (!dir && unmount(mountpoint, 0) != 0)
783 warn("unmount %s", mountpoint);
784 if (created && rmdir(mountpoint) != 0)
785 warn("rmdir %s", mountpoint);
786 if (ret != 0) {
787 if (unmount(dst, 0) != 0)
788 warn("unmount %s", dst);
789 errx(1, "copy %s to %s failed", mountpoint, dst);
790 }
791}
792
793static int
794gettmpmnt(char *mountpoint, size_t len)
795{
796 const char *tmp = _PATH_TMP"/tmp/";
797 const char *mnt = _PATH_MNT"/mnt";
798 struct statfs fs;
799 size_t n;
800
801 if (statfs(tmp, &fs) != 0)
802 err(1, "statfs %s", tmp);
803 if (fs.f_flags & MNT_RDONLY0x00000001) {
804 if (statfs(mnt, &fs) != 0)
805 err(1, "statfs %s", mnt);
806 if (strcmp(fs.f_mntonname, "/") != 0)
807 errx(1, "tmp mountpoint %s busy", mnt);
808 if (strlcpy(mountpoint, mnt, len) >= len)
809 errx(1, "tmp mountpoint %s too long", mnt);
810 return (0);
811 }
812 n = strlcpy(mountpoint, tmp, len);
813 if (n >= len)
814 errx(1, "tmp mount point too long");
815 if (mountpoint[n - 1] != '/')
816 strlcat(mountpoint, "/", len);
817 n = strlcat(mountpoint, "mntXXXXXXXXXX", len);
818 if (n >= len)
819 errx(1, "tmp mount point too long");
820 if (mkdtemp(mountpoint) == NULL((void *)0))
821 err(1, "mkdtemp %s", mountpoint);
822 return (1);
823}
824
825#endif /* MFS */