Commit | Line | Data |
---|---|---|
bcf1365c | 1 | /* |
704aadd2 KM |
2 | * Copyright (c) 1980 The Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
bcf1365c DF |
16 | */ |
17 | ||
18 | #ifndef lint | |
19 | char copyright[] = | |
704aadd2 | 20 | "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ |
bcf1365c | 21 | All rights reserved.\n"; |
7e8aa4e0 | 22 | #endif /* not lint */ |
bcf1365c | 23 | |
97dd7000 | 24 | #ifndef lint |
439847aa | 25 | static char sccsid[] = "@(#)df.c 5.9 (Berkeley) %G%"; |
7e8aa4e0 | 26 | #endif /* not lint */ |
a98f5f82 | 27 | |
8d335f7d BJ |
28 | /* |
29 | * df | |
30 | */ | |
704aadd2 KM |
31 | #include <stdio.h> |
32 | #include <sys/types.h> | |
1e568652 | 33 | #include <sys/stat.h> |
704aadd2 KM |
34 | #include <sys/mount.h> |
35 | #include "pathnames.h" | |
c7b72342 | 36 | |
1e568652 | 37 | char *getmntpt(); |
c7b72342 | 38 | int iflag; |
704aadd2 KM |
39 | #ifdef COMPAT_43 |
40 | int oflag; | |
41 | #endif /* COMPAT_43 */ | |
c7b72342 BJ |
42 | |
43 | main(argc, argv) | |
a98f5f82 BJ |
44 | int argc; |
45 | char **argv; | |
c7b72342 | 46 | { |
dbdc06d4 KB |
47 | extern int errno, optind; |
48 | int ch, i; | |
704aadd2 | 49 | long mntsize; |
1e568652 KM |
50 | char *mntpt; |
51 | struct stat stbuf; | |
704aadd2 | 52 | struct statfs statfsbuf, *mntbuf; |
439847aa | 53 | struct ufs_args mdev; |
c7b72342 | 54 | |
704aadd2 | 55 | while ((ch = getopt(argc, argv, "io")) != EOF) |
dbdc06d4 | 56 | switch(ch) { |
8a7d0cad SL |
57 | case 'i': |
58 | iflag++; | |
59 | break; | |
704aadd2 KM |
60 | #ifdef COMPAT_43 |
61 | case 'o': | |
62 | oflag++; | |
63 | break; | |
64 | #endif /* COMPAT_43 */ | |
dbdc06d4 | 65 | case '?': |
8a7d0cad | 66 | default: |
dbdc06d4 KB |
67 | fprintf(stderr, "usage: df [-i] [filsys ...]\n"); |
68 | exit(1); | |
8a7d0cad | 69 | } |
dbdc06d4 KB |
70 | argc -= optind; |
71 | argv += optind; | |
72 | ||
704aadd2 KM |
73 | printf("Filesystem kbytes used avail capacity"); |
74 | if (iflag) | |
75 | printf(" iused ifree %%iused"); | |
76 | printf(" Mounted on\n"); | |
77 | #ifdef COMPAT_43 | |
78 | if (oflag) { | |
79 | olddf(argv); | |
80 | exit(0); | |
81 | } | |
82 | #endif /* COMPAT_43 */ | |
83 | if (!*argv) { | |
1e568652 | 84 | mntsize = getmntinfo(&mntbuf); |
704aadd2 KM |
85 | for (i = 0; i < mntsize; i++) |
86 | prtstat(&mntbuf[i]); | |
87 | exit(0); | |
88 | } | |
89 | for (; *argv; argv++) { | |
1e568652 KM |
90 | if (stat(*argv, &stbuf) < 0) { |
91 | if ((mntpt = getmntpt(*argv)) == 0) | |
92 | continue; | |
93 | } else if ((stbuf.st_mode & S_IFMT) == S_IFBLK) { | |
94 | if ((mntpt = getmntpt(*argv)) == 0) | |
439847aa KM |
95 | mntpt = "/tmp/.mnt"; |
96 | mdev.fspec = *argv; | |
97 | if (!mkdir(mntpt) && | |
98 | !mount(MOUNT_UFS, mntpt, M_RDONLY, &mdev) && | |
99 | !statfs(mntpt, &statfsbuf)) { | |
100 | statfsbuf.f_mntonname[0] = '\0'; | |
101 | prtstat(&statfsbuf); | |
102 | } else { | |
103 | perror(*argv); | |
104 | } | |
105 | umount(mntpt, MNT_NOFORCE); | |
106 | rmdir(mntpt); | |
1e568652 KM |
107 | continue; |
108 | } else | |
109 | mntpt = *argv; | |
110 | if (statfs(mntpt, &statfsbuf) < 0) { | |
111 | perror(mntpt); | |
704aadd2 KM |
112 | continue; |
113 | } | |
114 | prtstat(&statfsbuf); | |
115 | } | |
116 | exit(0); | |
117 | } | |
118 | ||
1e568652 KM |
119 | getmntinfo(mntbufp) |
120 | struct statfs **mntbufp; | |
121 | { | |
122 | int i; | |
123 | static long mntsize; | |
124 | static struct statfs *mntbuf = 0; | |
125 | char *malloc(); | |
126 | ||
127 | if (mntbuf) { | |
128 | *mntbufp = mntbuf; | |
129 | return (mntsize); | |
130 | } | |
131 | if ((mntsize = getfsstat((struct statfs *)0, 0)) < 0) { | |
132 | perror("df"); | |
133 | exit(1); | |
134 | } | |
135 | mntbuf = 0; | |
136 | do { | |
137 | if (mntbuf) | |
138 | free((char *)mntbuf); | |
139 | i = (mntsize + 1) * sizeof(struct statfs); | |
140 | if ((mntbuf = (struct statfs *)malloc((unsigned)i)) == 0) { | |
141 | fprintf(stderr, | |
142 | "no space for mount table buffer\n"); | |
143 | exit(1); | |
144 | } | |
145 | if ((mntsize = getfsstat(mntbuf, i)) < 0) { | |
146 | perror("df"); | |
147 | exit(1); | |
148 | } | |
149 | } while (i == mntsize * sizeof(struct statfs)); | |
150 | *mntbufp = mntbuf; | |
151 | return (mntsize); | |
152 | } | |
153 | ||
154 | char * | |
155 | getmntpt(name) | |
156 | char *name; | |
157 | { | |
158 | long mntsize, i; | |
159 | struct statfs *mntbuf; | |
160 | ||
161 | mntsize = getmntinfo(&mntbuf); | |
162 | for (i = 0; i < mntsize; i++) { | |
163 | if (!strcmp(mntbuf[i].f_mntfromname, name)) | |
164 | return (mntbuf[i].f_mntonname); | |
165 | } | |
166 | return (0); | |
167 | } | |
168 | ||
704aadd2 KM |
169 | /* |
170 | * Print out status about a filesystem. | |
171 | */ | |
172 | prtstat(sfsp) | |
173 | register struct statfs *sfsp; | |
174 | { | |
175 | long used, availblks, inodes; | |
176 | ||
177 | printf("%-12.12s", sfsp->f_mntfromname); | |
178 | used = sfsp->f_blocks - sfsp->f_bfree; | |
179 | availblks = sfsp->f_bavail + used; | |
180 | printf("%8ld%8ld%8ld", sfsp->f_blocks * sfsp->f_fsize / 1024, | |
181 | used * sfsp->f_fsize / 1024, sfsp->f_bavail * sfsp->f_fsize / 1024); | |
182 | printf("%6.0f%%", | |
183 | availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0); | |
184 | if (iflag) { | |
185 | inodes = sfsp->f_files; | |
186 | used = inodes - sfsp->f_ffree; | |
187 | printf("%8ld%8ld%6.0f%% ", used, sfsp->f_ffree, | |
188 | inodes == 0 ? 100.0 : (double)used / (double)inodes * 100.0); | |
189 | } else | |
190 | printf(" "); | |
191 | printf(" %s\n", sfsp->f_mntonname); | |
192 | } | |
193 | ||
194 | #ifdef COMPAT_43 | |
195 | /* | |
196 | * This code constitutes the old df code for extracting | |
197 | * information from filesystem superblocks. | |
198 | */ | |
199 | #include <sys/param.h> | |
200 | #include <ufs/fs.h> | |
704aadd2 KM |
201 | #include <errno.h> |
202 | #include <fstab.h> | |
704aadd2 | 203 | |
704aadd2 | 204 | char root[32]; |
704aadd2 KM |
205 | |
206 | union { | |
207 | struct fs iu_fs; | |
208 | char dummy[SBSIZE]; | |
209 | } sb; | |
210 | #define sblock sb.iu_fs | |
211 | ||
212 | int fi; | |
213 | char *strcpy(); | |
214 | ||
215 | olddf(argv) | |
216 | char *argv[]; | |
217 | { | |
218 | struct fstab *fsp; | |
219 | char *strerror(); | |
704aadd2 | 220 | |
dda19894 | 221 | sync(); |
dbdc06d4 | 222 | if (!*argv) { |
8d335f7d | 223 | if (setfsent() == 0) |
3b72df1c | 224 | perror(_PATH_FSTAB), exit(1); |
a98f5f82 | 225 | while (fsp = getfsent()) { |
1f65a82f | 226 | if (strcmp(fsp->fs_type, FSTAB_RW) && |
351ef297 SL |
227 | strcmp(fsp->fs_type, FSTAB_RO) && |
228 | strcmp(fsp->fs_type, FSTAB_RQ)) | |
f0861f40 | 229 | continue; |
c7b72342 | 230 | if (root[0] == 0) |
f4d092e2 | 231 | (void) strcpy(root, fsp->fs_spec); |
a98f5f82 | 232 | dfree(fsp->fs_spec, 1); |
c7b72342 | 233 | } |
6c5c8ac3 | 234 | (void)endfsent(); |
c7b72342 BJ |
235 | exit(0); |
236 | } | |
dbdc06d4 KB |
237 | while (*argv) |
238 | dfree(*argv++, 0); | |
704aadd2 | 239 | exit(0); |
c7b72342 BJ |
240 | } |
241 | ||
a98f5f82 BJ |
242 | dfree(file, infsent) |
243 | char *file; | |
244 | int infsent; | |
c7b72342 | 245 | { |
dbdc06d4 | 246 | extern int errno; |
a98f5f82 | 247 | struct stat stbuf; |
704aadd2 KM |
248 | struct statfs statfsbuf; |
249 | register struct statfs *sfsp; | |
a98f5f82 | 250 | struct fstab *fsp; |
1e568652 | 251 | char *mntpt, *strerror(); |
a98f5f82 BJ |
252 | |
253 | if (stat(file, &stbuf) == 0 && | |
254 | (stbuf.st_mode&S_IFMT) != S_IFCHR && | |
255 | (stbuf.st_mode&S_IFMT) != S_IFBLK) { | |
256 | if (infsent) { | |
f6c7ec9d | 257 | fprintf(stderr, "%s: screwy fstab entry\n", file); |
8d335f7d BJ |
258 | return; |
259 | } | |
6c5c8ac3 | 260 | (void)setfsent(); |
a98f5f82 BJ |
261 | while (fsp = getfsent()) { |
262 | struct stat stb; | |
263 | ||
264 | if (stat(fsp->fs_spec, &stb) == 0 && | |
265 | stb.st_rdev == stbuf.st_dev) { | |
266 | file = fsp->fs_spec; | |
6c5c8ac3 | 267 | (void)endfsent(); |
a98f5f82 BJ |
268 | goto found; |
269 | } | |
270 | } | |
6c5c8ac3 | 271 | (void)endfsent(); |
a98f5f82 BJ |
272 | fprintf(stderr, "%s: mounted on unknown device\n", file); |
273 | return; | |
8d335f7d | 274 | } |
a98f5f82 | 275 | found: |
dbdc06d4 KB |
276 | if ((fi = open(file, 0)) < 0) { |
277 | fprintf(stderr, "df: %s: %s\n", file, strerror(errno)); | |
c7b72342 BJ |
278 | return; |
279 | } | |
6c5c8ac3 | 280 | if (bread((long)SBOFF, (char *)&sblock, SBSIZE) == 0) { |
f5064bf4 RC |
281 | (void) close(fi); |
282 | return; | |
283 | } | |
704aadd2 KM |
284 | sfsp = &statfsbuf; |
285 | sfsp->f_type = MOUNT_UFS; | |
286 | sfsp->f_flags = 0; | |
287 | sfsp->f_fsize = sblock.fs_fsize; | |
288 | sfsp->f_bsize = sblock.fs_bsize; | |
289 | sfsp->f_blocks = sblock.fs_dsize; | |
290 | sfsp->f_bfree = sblock.fs_cstotal.cs_nbfree * sblock.fs_frag + | |
291 | sblock.fs_cstotal.cs_nffree; | |
292 | sfsp->f_bavail = (sblock.fs_dsize * (100 - sblock.fs_minfree) / 100) - | |
293 | (sblock.fs_dsize - sfsp->f_bfree); | |
294 | if (sfsp->f_bavail < 0) | |
295 | sfsp->f_bavail = 0; | |
296 | sfsp->f_files = sblock.fs_ncg * sblock.fs_ipg; | |
297 | sfsp->f_ffree = sblock.fs_cstotal.cs_nifree; | |
298 | sfsp->f_fsid.val[0] = 0; | |
299 | sfsp->f_fsid.val[1] = 0; | |
1e568652 KM |
300 | if ((mntpt = getmntpt(file)) == 0) |
301 | mntpt = ""; | |
302 | bcopy((caddr_t)mntpt, (caddr_t)&sfsp->f_mntonname[0], MNAMELEN); | |
704aadd2 KM |
303 | bcopy((caddr_t)file, (caddr_t)&sfsp->f_mntfromname[0], MNAMELEN); |
304 | prtstat(sfsp); | |
f4d092e2 | 305 | (void) close(fi); |
c7b72342 BJ |
306 | } |
307 | ||
f4d092e2 KM |
308 | long lseek(); |
309 | ||
6c5c8ac3 KM |
310 | bread(off, buf, cnt) |
311 | long off; | |
a98f5f82 | 312 | char *buf; |
c7b72342 BJ |
313 | { |
314 | int n; | |
315 | extern errno; | |
316 | ||
6c5c8ac3 | 317 | (void) lseek(fi, off, 0); |
a98f5f82 | 318 | if ((n=read(fi, buf, cnt)) != cnt) { |
f5064bf4 RC |
319 | /* probably a dismounted disk if errno == EIO */ |
320 | if (errno != EIO) { | |
6c5c8ac3 | 321 | printf("\nread error off = %ld\n", off); |
f5064bf4 RC |
322 | printf("count = %d; errno = %d\n", n, errno); |
323 | } | |
324 | return (0); | |
c7b72342 | 325 | } |
f5064bf4 | 326 | return (1); |
c7b72342 | 327 | } |
704aadd2 | 328 | #endif /* COMPAT_43 */ |