Bug Summary

File:src/sbin/mount/mount.c
Warning:line 382, column 4
Potential leak of memory pointed to by 'optbuf'

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 mount.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/mount/obj -resource-dir /usr/local/llvm16/lib/clang/16 -internal-isystem /usr/local/llvm16/lib/clang/16/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/sbin/mount/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/mount/mount.c
1/* $OpenBSD: mount.c,v 1.77 2023/07/23 23:21:19 kn Exp $ */
2/* $NetBSD: mount.c,v 1.24 1995/11/18 03:34:29 cgd Exp $ */
3
4/*
5 * Copyright (c) 1980, 1989, 1993, 1994
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/types.h>
34#include <sys/mount.h>
35#include <sys/socket.h>
36#include <sys/wait.h>
37
38#include <nfs/rpcv2.h>
39#include <nfs/nfsproto.h>
40#include <nfs/nfs.h>
41
42#include <err.h>
43#include <errno(*__errno()).h>
44#include <fstab.h>
45#include <netdb.h>
46#include <signal.h>
47#include <stdio.h>
48#include <stdlib.h>
49#include <string.h>
50#include <unistd.h>
51#include <limits.h>
52#include <util.h>
53
54#include "pathnames.h"
55
56int debug, verbose, skip;
57char **typelist = NULL((void *)0);
58enum { NONET_FILTER, NET_FILTER } filter = NONET_FILTER;
59
60int selected(const char *);
61char *catopt(char *, const char *);
62char *flags2opts(u_int32_t);
63struct statfs
64 *getmntpt(const char *);
65int hasopt(const char *, const char *);
66void maketypelist(char *);
67void mangle(char *, int *, const char **, int);
68int mountfs(const char *, const char *, const char *, const char *,
69 const char *, int);
70void prmount(struct statfs *);
71int disklabelcheck(struct fstab *);
72__dead__attribute__((__noreturn__)) void usage(void);
73
74/* Map from mount options to printable formats. */
75static struct opt {
76 int o_opt;
77 int o_silent;
78 const char *o_name;
79 const char *o_optname;
80} optnames[] = {
81 { MNT_ASYNC0x00000040, 0, "asynchronous", "async" },
82 { MNT_DEFEXPORTED0x00000200, 1, "exported to the world", "" },
83 { MNT_EXPORTED0x00000100, 0, "NFS exported", "" },
84 { MNT_EXPORTANON0x00000400, 1, "anon uid mapping", "" },
85 { MNT_EXRDONLY0x00000080, 1, "exported read-only", "" },
86 { MNT_LOCAL0x00001000, 0, "local", "" },
87 { MNT_NOATIME0x00008000, 0, "noatime", "noatime" },
88 { MNT_NODEV0x00000010, 0, "nodev", "nodev" },
89 { MNT_NOEXEC0x00000004, 0, "noexec", "noexec" },
90 { MNT_NOSUID0x00000008, 0, "nosuid", "nosuid" },
91 { MNT_NOPERM0x00000020, 0, "noperm", "noperm" },
92 { MNT_WXALLOWED0x00000800, 0, "wxallowed", "wxallowed" },
93 { MNT_QUOTA0x00002000, 0, "with quotas", "" },
94 { MNT_RDONLY0x00000001, 0, "read-only", "ro" },
95 { MNT_ROOTFS0x00004000, 1, "root file system", "" },
96 { MNT_SYNCHRONOUS0x00000002, 0, "synchronous", "sync" },
97 { MNT_SOFTDEP0x04000000, 0, "softdep", "softdep" },
98 { 0, 0, "", "" }
99};
100
101int
102main(int argc, char * const argv[])
103{
104 const char *mntonname, *vfstype;
105 struct fstab *fs;
106 struct statfs *mntbuf;
107 FILE *mountdfp;
108 pid_t pid;
109 int all, ch, forceall, i, mntsize, rval, new;
110 char *options, mntpath[PATH_MAX1024];
111
112 all = forceall = 0;
113 options = NULL((void *)0);
114 vfstype = "ffs";
115 while ((ch = getopt(argc, argv, "AadfNo:rswt:uv")) != -1)
1
Assuming the condition is false
→
2
←
Loop condition is false. Execution continues on line 164
→
116 switch (ch) {
117 case 'A':
118 all = forceall = 1;
119 break;
120 case 'a':
121 all = 1;
122 break;
123 case 'd':
124 debug = 1;
125 break;
126 case 'f':
127 if (!hasopt(options, "force"))
128 options = catopt(options, "force");
129 break;
130 case 'N':
131 filter = NET_FILTER;
132 break;
133 case 'o':
134 if (*optarg)
135 options = catopt(options, optarg);
136 break;
137 case 'r':
138 if (!hasopt(options, "ro"))
139 options = catopt(options, "ro");
140 break;
141 case 's':
142 skip = 1;
143 break;
144 case 't':
145 if (typelist != NULL((void *)0))
146 errx(1, "only one -t option may be specified.");
147 maketypelist(optarg);
148 vfstype = optarg;
149 break;
150 case 'u':
151 if (!hasopt(options, "update"))
152 options = catopt(options, "update");
153 break;
154 case 'v':
155 verbose = 1;
156 break;
157 case 'w':
158 if (!hasopt(options, "rw"))
159 options = catopt(options, "rw");
160 break;
161 default:
162 usage();
163 }
164 argc -= optind;
165 argv += optind;
166
167 if (typelist
2.1
'typelist' is equal to NULL
 == NULL((void *)0) && argc == 2) {
3
←
Assuming 'argc' is equal to 2
→
4
←
Taking true branch
→
168 /*
169 * If -t flag has not been specified, and spec contains either
170 * a ':' or a '@' then assume that an NFS filesystem is being
171 * specified ala Sun. If not, check the disklabel for a
172 * known filesystem type.
173 */
174 if (strpbrk(argv[0], ":@") != NULL((void *)0))
5
←
Assuming the condition is true
→
6
←
Taking true branch
→
175 vfstype = "nfs";
176 else {
177 char *labelfs = readlabelfs(argv[0], 0);
178 if (labelfs != NULL((void *)0))
179 vfstype = labelfs;
180 }
181 }
182
183 if (pledge("stdio rpath disklabel proc exec", NULL((void *)0)) == -1)
7
←
Assuming the condition is false
→
8
←
Taking false branch
→
184 err(1, "pledge");
185
186#define BADTYPE(type)(strcmp(type, "ro") && strcmp(type, "rw") && strcmp
(type, "rq")) \
187 (strcmp(type, FSTAB_RO"ro") && \
188 strcmp(type, FSTAB_RW"rw") && strcmp(type, FSTAB_RQ"rq"))
189
190 rval = 0;
191 new = 0;
192 switch (argc) {
9
←
Control jumps to 'case 2:' at line 277
→
193 case 0:
194 if (all)
195 while ((fs = getfsent()) != NULL((void *)0)) {
196 if (BADTYPE(fs->fs_type)(strcmp(fs->fs_type, "ro") && strcmp(fs->fs_type
, "rw") && strcmp(fs->fs_type, "rq")))
197 continue;
198 switch (filter) {
199 case NET_FILTER:
200 if (!hasopt(fs->fs_mntops, "net"))
201 continue;
202 break;
203 case NONET_FILTER:
204 if (hasopt(fs->fs_mntops, "net"))
205 continue;
206 break;
207 }
208 if (!selected(fs->fs_vfstype))
209 continue;
210 if (hasopt(fs->fs_mntops, "noauto"))
211 continue;
212 if (disklabelcheck(fs))
213 continue;
214 if (mountfs(fs->fs_vfstype, fs->fs_spec,
215 fs->fs_file, options,
216 fs->fs_mntops, !forceall))
217 rval = 1;
218 else
219 ++new;
220 }
221 else {
222 if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT2)) == 0)
223 err(1, "getmntinfo");
224 for (i = 0; i < mntsize; i++) {
225 if (!selected(mntbuf[i].f_fstypename))
226 continue;
227 prmount(&mntbuf[i]);
228 }
229 return (rval);
230 }
231 break;
232 case 1:
233 if (typelist != NULL((void *)0))
234 usage();
235
236 if (realpath(*argv, mntpath) == NULL((void *)0))
237 strlcpy(mntpath, *argv, sizeof(mntpath));
238 if (hasopt(options, "update")) {
239 if ((mntbuf = getmntpt(mntpath)) == NULL((void *)0))
240 errx(1,
241 "unknown special file or file system %s.",
242 mntpath);
243 if ((mntbuf->f_flags & MNT_ROOTFS0x00004000) &&
244 !strcmp(mntbuf->f_mntfromname, "root_device")) {
245 /* Lookup fstab for name of root device. */
246 fs = getfsfile(mntbuf->f_mntonname);
247 if (fs == NULL((void *)0))
248 errx(1,
249 "can't find fstab entry for %s.",
250 mntpath);
251 } else {
252 if ((fs = malloc(sizeof(*fs))) == NULL((void *)0))
253 err(1, NULL((void *)0));
254 fs->fs_vfstype = mntbuf->f_fstypename;
255 fs->fs_spec = mntbuf->f_mntfromname;
256 }
257 /*
258 * It's an update, ignore the fstab file options.
259 * Get the current options, so we can change only
260 * the options which given via a command line.
261 */
262 fs->fs_mntops = flags2opts(mntbuf->f_flags);
263 mntonname = mntbuf->f_mntonname;
264 } else {
265 if ((fs = getfsfile(mntpath)) == NULL((void *)0) &&
266 (fs = getfsspec(mntpath)) == NULL((void *)0))
267 errx(1, "can't find fstab entry for %s.",
268 mntpath);
269 if (BADTYPE(fs->fs_type)(strcmp(fs->fs_type, "ro") && strcmp(fs->fs_type
, "rw") && strcmp(fs->fs_type, "rq")))
270 errx(1, "%s has unknown file system type.",
271 mntpath);
272 mntonname = fs->fs_file;
273 }
274 rval = mountfs(fs->fs_vfstype, fs->fs_spec,
275 mntonname, options, fs->fs_mntops, skip);
276 break;
277 case 2:
278 rval = mountfs(vfstype, argv[0], argv[1], options, NULL((void *)0), skip);
10
←
Calling 'mountfs'
→
279 break;
280 default:
281 usage();
282 }
283
284 /*
285 * If the mount was successful and done by root, tell mountd the
286 * good news. Pid checks are probably unnecessary, but don't hurt.
287 * XXX This should be done from kernel.
288 */
289 if ((rval == 0 || new) && getuid() == 0 &&
290 (mountdfp = fopen(_PATH_MOUNTDPID"/var/run/mountd.pid", "r")) != NULL((void *)0)) {
291 if (fscanf(mountdfp, "%d", &pid) == 1 &&
292 pid > 0 && kill(pid, SIGHUP1) == -1 && errno(*__errno()) != ESRCH3)
293 err(1, "signal mountd");
294 (void)fclose(mountdfp);
295 }
296
297 return (rval);
298}
299
300int
301hasopt(const char *mntopts, const char *option)
302{
303 int found;
304 char *opt, *optbuf;
305
306 if (mntopts == NULL((void *)0))
307 return (0);
308 if ((optbuf = strdup(mntopts)) == NULL((void *)0))
309 err(1, NULL((void *)0));
310 found = 0;
311 for (opt = optbuf; !found && opt != NULL((void *)0); strsep(&opt, ","))
312 found = !strncmp(opt, option, strlen(option));
313 free(optbuf);
314 return (found);
315}
316
317/*
318 * Convert mount(2) flags to list of mount(8) options.
319 */
320char*
321flags2opts(u_int32_t flags)
322{
323 char *optlist;
324 struct opt *p;
325
326 optlist = NULL((void *)0);
327 for (p = optnames; p->o_opt; p++) {
328 if (flags & p->o_opt && *p->o_optname)
329 optlist = catopt(optlist, p->o_optname);
330 }
331
332 return(optlist);
333}
334
335int
336mountfs(const char *vfstype, const char *spec, const char *name,
337 const char *options, const char *mntopts, int skipmounted)
338{
339 char *cp;
340
341 /* List of directories containing mount_xxx subcommands. */
342 static const char *edirs[] = {
343 _PATH_SBIN"/sbin",
344 _PATH_USRSBIN"/usr/sbin",
345 NULL((void *)0)
346 };
347 const char **argv, **edir;
348 struct statfs sf;
349 pid_t pid;
350 int argc, i, status, argvsize;
351 char *optbuf, execname[PATH_MAX1024], mntpath[PATH_MAX1024];
352
353 if (realpath(name, mntpath) == NULL((void *)0)) {
11
←
Assuming the condition is false
→
12
←
Taking false branch
→
354 warn("realpath %s", name);
355 return (1);
356 }
357
358 name = mntpath;
359
360 if (mntopts
12.1
'mntopts' is equal to NULL
 == NULL((void *)0))
13
←
Taking true branch
→
361 mntopts = "";
362
363 if (options
13.1
'options' is equal to NULL
 == NULL((void *)0)) {
14
←
Taking true branch
→
364 if (*mntopts == '\0')
15
←
Taking true branch
→
365 options = "rw";
366 else {
367 options = mntopts;
368 mntopts = "";
369 }
370 }
371
372 /* options follows after mntopts, so they get priority over mntopts */
373 if ((cp = strdup(mntopts)) == NULL((void *)0))
16
←
Assuming the condition is false
→
17
←
Taking false branch
→
374 err(1, NULL((void *)0));
375 optbuf = catopt(cp, options);
18
←
Calling 'catopt'
→
24
←
Returned allocated memory
→
376
377 if (strcmp(name, "/") == 0) {
25
←
Assuming the condition is false
→
26
←
Taking false branch
→
378 if (!hasopt(optbuf, "update"))
379 optbuf = catopt(optbuf, "update");
380 } else if (skipmounted) {
27
←
Assuming 'skipmounted' is not equal to 0
→
28
←
Taking true branch
→
381 if (statfs(name, &sf) == -1) {
29
←
Assuming the condition is true
→
30
←
Taking true branch
→
382 warn("statfs %s", name);
31
←
Potential leak of memory pointed to by 'optbuf'
383 return (1);
384 }
385 /* XXX can't check f_mntfromname, thanks to mfs, etc. */
386 if (strncmp(name, sf.f_mntonname, MNAMELEN90) == 0 &&
387 strncmp(vfstype, sf.f_fstypename, MFSNAMELEN16) == 0) {
388 if (verbose) {
389 printf("%s", sf.f_mntfromname);
390 if (strncmp(sf.f_mntfromname,
391 sf.f_mntfromspec, MNAMELEN90) != 0)
392 printf(" (%s)", sf.f_mntfromspec);
393 printf(" on %s type %.*s: %s\n",
394 sf.f_mntonname,
395 MFSNAMELEN16, sf.f_fstypename,
396 "already mounted");
397 }
398 return (0);
399 }
400 }
401
402 argvsize = 64;
403 if((argv = reallocarray(NULL((void *)0), argvsize, sizeof(char *))) == NULL((void *)0))
404 err(1, NULL((void *)0));
405 argc = 0;
406 argv[argc++] = NULL((void *)0); /* this should be a full path name */
407 mangle(optbuf, &argc, argv, argvsize - 4);
408 argv[argc++] = spec;
409 argv[argc++] = name;
410 argv[argc] = NULL((void *)0);
411
412 if (debug) {
413 (void)printf("exec: mount_%s", vfstype);
414 for (i = 1; i < argc; i++)
415 (void)printf(" %s", argv[i]);
416 (void)printf("\n");
417 free(optbuf);
418 free(argv);
419 return (0);
420 }
421
422 switch ((pid = fork())) {
423 case -1: /* Error. */
424 warn("fork");
425 free(optbuf);
426 free(argv);
427 return (1);
428 case 0: /* Child. */
429 /* Go find an executable. */
430 edir = edirs;
431 do {
432 (void)snprintf(execname,
433 sizeof(execname), "%s/mount_%s", *edir, vfstype);
434 argv[0] = execname;
435 execv(execname, (char * const *)argv);
436 if (errno(*__errno()) != ENOENT2)
437 warn("exec %s for %s", execname, name);
438 } while (*++edir != NULL((void *)0));
439
440 if (errno(*__errno()) == ENOENT2)
441 warn("no mount helper program found for %s", vfstype);
442 _exit(1);
443 default: /* Parent. */
444 free(optbuf);
445 free(argv);
446
447 if (waitpid(pid, &status, 0) == -1) {
448 warn("waitpid");
449 return (1);
450 }
451
452 if (WIFEXITED(status)(((status) & 0177) == 0)) {
453 if (WEXITSTATUS(status)(int)(((unsigned)(status) >> 8) & 0xff) != 0)
454 return (WEXITSTATUS(status)(int)(((unsigned)(status) >> 8) & 0xff));
455 } else if (WIFSIGNALED(status)(((status) & 0177) != 0177 && ((status) & 0177
) != 0)) {
456 warnx("%s: %s", name, strsignal(WTERMSIG(status)(((status) & 0177))));
457 return (1);
458 }
459
460 if (verbose) {
461 if (statfs(name, &sf) == -1) {
462 warn("statfs %s", name);
463 return (1);
464 }
465 prmount(&sf);
466 }
467 break;
468 }
469
470 return (0);
471}
472
473void
474prmount(struct statfs *sf)
475{
476 int flags;
477 struct opt *o;
478 int f = 0;
479
480 printf("%s", sf->f_mntfromname);
481 if (verbose &&
482 strncmp(sf->f_mntfromname, sf->f_mntfromspec, MNAMELEN90) != 0)
483 printf(" (%s)", sf->f_mntfromspec);
484 printf(" on %s type %.*s", sf->f_mntonname,
485 MFSNAMELEN16, sf->f_fstypename);
486
487 flags = sf->f_flags & MNT_VISFLAGMASK0x0400ffff;
488 if (verbose && !(flags & MNT_RDONLY0x00000001))
489 (void)printf("%s%s", !f++ ? " (" : ", ", "rw");
490 for (o = optnames; flags && o->o_opt; o++)
491 if (flags & o->o_opt) {
492 if (!o->o_silent)
493 (void)printf("%s%s", !f++ ? " (" : ", ",
494 o->o_name);
495 flags &= ~o->o_opt;
496 }
497 if (flags)
498 (void)printf("%sunknown flag%s %#x", !f++ ? " (" : ", ",
499 flags & (flags - 1) ? "s" : "", flags);
500
501
502 if (verbose) {
503 char buf[26];
504 time_t t = sf->f_ctime;
505
506 ctime_r(&t, buf);
507 buf[24] = '\0';
508 printf(", ctime=%s", buf);
509 }
510
511 /*
512 * Filesystem-specific options
513 * We only print the "interesting" values unless in verbose
514 * mode in order to keep the signal/noise ratio high.
515 */
516 if (strcmp(sf->f_fstypename, MOUNT_NFS"nfs") == 0) {
517 struct protoent *pr;
518 struct nfs_args *nfs_args = &sf->mount_info.nfs_args;
519
520 (void)printf("%s%s", !f++ ? " (" : ", ",
521 (nfs_args->flags & NFSMNT_NFSV30x00000200) ? "v3" : "v2");
522 if (nfs_args->proto && (pr = getprotobynumber(nfs_args->proto)))
523 (void)printf("%s%s", !f++ ? " (" : ", ", pr->p_name);
524 else
525 (void)printf("%s%s", !f++ ? " (" : ", ",
526 (nfs_args->sotype == SOCK_DGRAM2) ? "udp" : "tcp");
527 if (nfs_args->flags & NFSMNT_SOFT0x00000001)
528 (void)printf("%s%s", !f++ ? " (" : ", ", "soft");
529 else if (verbose)
530 (void)printf("%s%s", !f++ ? " (" : ", ", "hard");
531 if (nfs_args->flags & NFSMNT_INT0x00000040)
532 (void)printf("%s%s", !f++ ? " (" : ", ", "intr");
533 if (nfs_args->flags & NFSMNT_NOCONN0x00000080)
534 (void)printf("%s%s", !f++ ? " (" : ", ", "noconn");
535 if (nfs_args->flags & NFSMNT_RDIRPLUS0x00010000)
536 (void)printf("%s%s", !f++ ? " (" : ", ", "rdirplus");
537 if (verbose || nfs_args->wsize != NFS_WSIZE8192)
538 (void)printf("%s%s=%d", !f++ ? " (" : ", ",
539 "wsize", nfs_args->wsize);
540 if (verbose || nfs_args->rsize != NFS_RSIZE8192)
541 (void)printf("%s%s=%d", !f++ ? " (" : ", ",
542 "rsize", nfs_args->rsize);
543 if (verbose || nfs_args->readdirsize != NFS_READDIRSIZE8192)
544 (void)printf("%s%s=%d", !f++ ? " (" : ", ",
545 "rdirsize", nfs_args->readdirsize);
546 if (verbose || nfs_args->timeo != 10) /* XXX */
547 (void)printf("%s%s=%d", !f++ ? " (" : ", ",
548 "timeo", nfs_args->timeo);
549 if (verbose || nfs_args->retrans != NFS_RETRANS10)
550 (void)printf("%s%s=%d", !f++ ? " (" : ", ",
551 "retrans", nfs_args->retrans);
552 if (verbose || nfs_args->maxgrouplist != NFS_MAXGRPS16)
553 (void)printf("%s%s=%d", !f++ ? " (" : ", ",
554 "maxgrouplist", nfs_args->maxgrouplist);
555 if (verbose || nfs_args->readahead != NFS_DEFRAHEAD1)
556 (void)printf("%s%s=%d", !f++ ? " (" : ", ",
557 "readahead", nfs_args->readahead);
558 if (verbose) {
559 (void)printf("%s%s=%d", !f++ ? " (" : ", ",
560 "acregmin", nfs_args->acregmin);
561 (void)printf(", %s=%d",
562 "acregmax", nfs_args->acregmax);
563 (void)printf(", %s=%d",
564 "acdirmin", nfs_args->acdirmin);
565 (void)printf(", %s=%d",
566 "acdirmax", nfs_args->acdirmax);
567 }
568#ifndef SMALL
569 } else if (strcmp(sf->f_fstypename, MOUNT_MFS"mfs") == 0) {
570 int headerlen;
571 long blocksize;
572 char *header;
573
574 header = getbsize(&headerlen, &blocksize);
575 (void)printf("%s%s=%lu %s", !f++ ? " (" : ", ",
576 "size", sf->mount_info.mfs_args.size / blocksize, header);
577#endif /* SMALL */
578 } else if (strcmp(sf->f_fstypename, MOUNT_MSDOS"msdos") == 0) {
579 struct msdosfs_args *msdosfs_args = &sf->mount_info.msdosfs_args;
580
581 if (verbose || msdosfs_args->uid || msdosfs_args->gid)
582 (void)printf("%s%s=%u, %s=%u", !f++ ? " (" : ", ",
583 "uid", msdosfs_args->uid, "gid", msdosfs_args->gid);
584 if (verbose || msdosfs_args->mask != 0755)
585 (void)printf("%s%s=0%o", !f++ ? " (" : ", ",
586 "mask", msdosfs_args->mask);
587 if (msdosfs_args->flags & MSDOSFSMNT_SHORTNAME0x01)
588 (void)printf("%s%s", !f++ ? " (" : ", ", "short");
589 if (msdosfs_args->flags & MSDOSFSMNT_LONGNAME0x02)
590 (void)printf("%s%s", !f++ ? " (" : ", ", "long");
591 if (msdosfs_args->flags & MSDOSFSMNT_NOWIN950x04)
592 (void)printf("%s%s", !f++ ? " (" : ", ", "nowin95");
593 } else if (strcmp(sf->f_fstypename, MOUNT_CD9660"cd9660") == 0) {
594 struct iso_args *iso_args = &sf->mount_info.iso_args;
595
596 if (iso_args->flags & ISOFSMNT_NORRIP0x00000001)
597 (void)printf("%s%s", !f++ ? " (" : ", ", "norrip");
598 if (iso_args->flags & ISOFSMNT_GENS0x00000002)
599 (void)printf("%s%s", !f++ ? " (" : ", ", "gens");
600 if (iso_args->flags & ISOFSMNT_EXTATT0x00000004)
601 (void)printf("%s%s", !f++ ? " (" : ", ", "extatt");
602#ifndef SMALL
603 } else if (strcmp(sf->f_fstypename, MOUNT_TMPFS"tmpfs") == 0) {
604 struct tmpfs_args *tmpfs_args = &sf->mount_info.tmpfs_args;
605
606 if (verbose || tmpfs_args->ta_root_uid || tmpfs_args->ta_root_gid)
607 (void)printf("%s%s=%u, %s=%u", !f++ ? " (" : ", ",
608 "uid", tmpfs_args->ta_root_uid, "gid", tmpfs_args->ta_root_gid);
609 if (verbose || tmpfs_args->ta_root_mode != 040755)
610 (void)printf("%s%s=%04o", !f++ ? " (" : ", ",
611 "mode", tmpfs_args->ta_root_mode & 07777);
612 if (verbose || tmpfs_args->ta_size_max)
613 (void)printf("%s%s=%lu", !f++ ? " (" : ", ",
614 "size", (unsigned long)tmpfs_args->ta_size_max);
615 if (verbose || tmpfs_args->ta_nodes_max)
616 (void)printf("%s%s=%lu", !f++ ? " (" : ", ",
617 "inodes", (unsigned long)tmpfs_args->ta_nodes_max);
618#endif /* SMALL */
619 }
620 (void)printf(f ? ")\n" : "\n");
621}
622
623struct statfs *
624getmntpt(const char *name)
625{
626 struct statfs *mntbuf;
627 int i, mntsize;
628
629 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT2);
630 for (i = 0; i < mntsize; i++)
631 if (strcmp(mntbuf[i].f_mntfromname, name) == 0 ||
632 strcmp(mntbuf[i].f_mntonname, name) == 0)
633 return (&mntbuf[i]);
634 return (NULL((void *)0));
635}
636
637static enum { IN_LIST, NOT_IN_LIST } which;
638
639int
640selected(const char *type)
641{
642 char **av;
643
644 /* If no type specified, it's always selected. */
645 if (typelist == NULL((void *)0))
646 return (1);
647 for (av = typelist; *av != NULL((void *)0); ++av)
648 if (!strncmp(type, *av, MFSNAMELEN16))
649 return (which == IN_LIST ? 1 : 0);
650 return (which == IN_LIST ? 0 : 1);
651}
652
653void
654maketypelist(char *fslist)
655{
656 int i;
657 char *nextcp, **av;
658
659 if ((fslist == NULL((void *)0)) || (fslist[0] == '\0'))
660 errx(1, "empty type list");
661
662 /*
663 * XXX
664 * Note: the syntax is "noxxx,yyy" for no xxx's and
665 * no yyy's, not the more intuitive "noxxx,noyyy".
666 */
667 if (fslist[0] == 'n' && fslist[1] == 'o') {
668 fslist += 2;
669 which = NOT_IN_LIST;
670 } else
671 which = IN_LIST;
672
673 /* Count the number of types. */
674 for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++)
675 ++nextcp;
676
677 /* Build an array of that many types. */
678 if ((av = typelist = reallocarray(NULL((void *)0), i + 1, sizeof(char *))) == NULL((void *)0))
679 err(1, NULL((void *)0));
680 av[0] = fslist;
681 for (i = 1, nextcp = fslist; (nextcp = strchr(nextcp, ',')); i++) {
682 *nextcp = '\0';
683 av[i] = ++nextcp;
684 }
685 /* Terminate the array. */
686 av[i] = NULL((void *)0);
687}
688
689char *
690catopt(char *s0, const char *s1)
691{
692 char *cp;
693
694 if (s0
18.1
's0' is non-null
 && *s0) {
19
←
Assuming the condition is false
→
20
←
Taking false branch
→
695 if (asprintf(&cp, "%s,%s", s0, s1) == -1)
696 err(1, NULL((void *)0));
697 } else {
698 if ((cp = strdup(s1)) == NULL((void *)0))
21
←
Memory is allocated
→
22
←
Assuming the condition is false
→
23
←
Taking false branch
→
699 err(1, NULL((void *)0));
700 }
701
702 free(s0);
703 return cp;
704}
705
706void
707mangle(char *options, int *argcp, const char **argv, int argcmax)
708{
709 char *p, *s;
710 int argc;
711
712 argcmax -= 2;
713 argc = *argcp;
714 for (s = options; argc <= argcmax && (p = strsep(&s, ",")) != NULL((void *)0);)
715 if (*p != '\0') {
716 if (*p == '-') {
717 argv[argc++] = p;
718 p = strchr(p, '=');
719 if (p) {
720 *p = '\0';
721 argv[argc++] = p + 1;
722 }
723 } else {
724 argv[argc++] = "-o";
725 argv[argc++] = p;
726 }
727 }
728
729 *argcp = argc;
730}
731
732__dead__attribute__((__noreturn__)) void
733usage(void)
734{
735 (void)fprintf(stderr(&__sF[2]),
736 "usage: mount [-AadfNruvw] [-t type]\n"
737 " mount [-dfrsuvw] special | node\n"
738 " mount [-dfruvw] [-o options] [-t type] special node\n");
739 exit(1);
740}
741
742int
743disklabelcheck(struct fstab *fs)
744{
745 char *labelfs;
746
747 if (strcmp(fs->fs_vfstype, "nfs") != 0 ||
748 strpbrk(fs->fs_spec, ":@") == NULL((void *)0)) {
749 labelfs = readlabelfs(fs->fs_spec, 0);
750 if (labelfs == NULL((void *)0) ||
751 strcmp(labelfs, fs->fs_vfstype) == 0)
752 return (0);
753 if (strcmp(fs->fs_vfstype, "ufs") == 0 &&
754 strcmp(labelfs, "ffs") == 0) {
755 warnx("%s: fstab uses outdated type 'ufs' -- fix please",
756 fs->fs_spec);
757 return (0);
758 }
759 if (strcmp(fs->fs_vfstype, "mfs") == 0 &&
760 strcmp(labelfs, "ffs") == 0)
761 return (0);
762 warnx("%s: fstab type %s != disklabel type %s",
763 fs->fs_spec, fs->fs_vfstype, labelfs);
764 return (1);
765 }
766 return (0);
767}