Commit | Line | Data |
---|---|---|
bcf1365c | 1 | /* |
704aadd2 KM |
2 | * Copyright (c) 1980 The Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
27c71911 | 5 | * %sccs.include.redist.c% |
bcf1365c DF |
6 | */ |
7 | ||
8 | #ifndef lint | |
9 | char copyright[] = | |
704aadd2 | 10 | "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ |
bcf1365c | 11 | All rights reserved.\n"; |
7e8aa4e0 | 12 | #endif /* not lint */ |
bcf1365c | 13 | |
97dd7000 | 14 | #ifndef lint |
27c71911 | 15 | static char sccsid[] = "@(#)df.c 5.20 (Berkeley) %G%"; |
7e8aa4e0 | 16 | #endif /* not lint */ |
a98f5f82 | 17 | |
8d335f7d BJ |
18 | /* |
19 | * df | |
20 | */ | |
fc2797e7 | 21 | #include <sys/param.h> |
1e568652 | 22 | #include <sys/stat.h> |
704aadd2 | 23 | #include <sys/mount.h> |
fc2797e7 KB |
24 | #include <sys/file.h> |
25 | #include <stdio.h> | |
6ebcb998 | 26 | #include <string.h> |
fc2797e7 | 27 | #include <unistd.h> |
c7b72342 | 28 | |
1e568652 | 29 | char *getmntpt(); |
93e6cf82 | 30 | int iflag, kflag, nflag; |
704aadd2 KM |
31 | #ifdef COMPAT_43 |
32 | int oflag; | |
33 | #endif /* COMPAT_43 */ | |
c7b72342 BJ |
34 | |
35 | main(argc, argv) | |
a98f5f82 BJ |
36 | int argc; |
37 | char **argv; | |
c7b72342 | 38 | { |
dbdc06d4 | 39 | extern int errno, optind; |
cf537218 | 40 | int err, ch, i; |
b6f929c6 | 41 | long width, maxwidth, mntsize, getmntinfo(); |
fc2797e7 | 42 | char *mntpt, *mktemp(); |
1e568652 | 43 | struct stat stbuf; |
704aadd2 | 44 | struct statfs statfsbuf, *mntbuf; |
439847aa | 45 | struct ufs_args mdev; |
c7b72342 | 46 | |
93e6cf82 | 47 | while ((ch = getopt(argc, argv, "ikon")) != EOF) |
dbdc06d4 | 48 | switch(ch) { |
8a7d0cad | 49 | case 'i': |
fc2797e7 KB |
50 | iflag = 1; |
51 | break; | |
52 | case 'k': | |
53 | kflag = 1; | |
8a7d0cad | 54 | break; |
93e6cf82 KM |
55 | case 'n': |
56 | nflag = 1; | |
57 | break; | |
704aadd2 KM |
58 | #ifdef COMPAT_43 |
59 | case 'o': | |
fc2797e7 | 60 | oflag = 1; |
704aadd2 KM |
61 | break; |
62 | #endif /* COMPAT_43 */ | |
dbdc06d4 | 63 | case '?': |
8a7d0cad | 64 | default: |
fc2797e7 | 65 | fprintf(stderr, |
93e6cf82 | 66 | "usage: df [-ikn] [file | file_system ...]\n"); |
dbdc06d4 | 67 | exit(1); |
8a7d0cad | 68 | } |
dbdc06d4 KB |
69 | argc -= optind; |
70 | argv += optind; | |
71 | ||
b6f929c6 KM |
72 | mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); |
73 | maxwidth = 0; | |
74 | for (i = 0; i < mntsize; i++) { | |
75 | width = strlen(mntbuf[i].f_mntfromname); | |
76 | if (width > maxwidth) | |
77 | maxwidth = width; | |
78 | } | |
704aadd2 KM |
79 | #ifdef COMPAT_43 |
80 | if (oflag) { | |
b6f929c6 | 81 | olddf(argv, maxwidth); |
704aadd2 KM |
82 | exit(0); |
83 | } | |
84 | #endif /* COMPAT_43 */ | |
85 | if (!*argv) { | |
93e6cf82 | 86 | mntsize = getmntinfo(&mntbuf, (nflag ? MNT_NOWAIT : MNT_WAIT)); |
704aadd2 | 87 | for (i = 0; i < mntsize; i++) |
b6f929c6 | 88 | prtstat(&mntbuf[i], maxwidth); |
704aadd2 KM |
89 | exit(0); |
90 | } | |
91 | for (; *argv; argv++) { | |
1e568652 | 92 | if (stat(*argv, &stbuf) < 0) { |
cf537218 KM |
93 | err = errno; |
94 | if ((mntpt = getmntpt(*argv)) == 0) { | |
fc2797e7 KB |
95 | fprintf(stderr, "df: %s: %s\n", *argv, |
96 | strerror(err)); | |
1e568652 | 97 | continue; |
cf537218 | 98 | } |
1e568652 | 99 | } else if ((stbuf.st_mode & S_IFMT) == S_IFBLK) { |
819bc686 | 100 | if ((mntpt = getmntpt(*argv)) == 0) { |
93e6cf82 | 101 | mntpt = mktemp("/tmp/df.XXXXXX"); |
439847aa KM |
102 | mdev.fspec = *argv; |
103 | if (!mkdir(mntpt) && | |
5750dd3d | 104 | !mount(MOUNT_UFS, mntpt, MNT_RDONLY, &mdev) && |
439847aa KM |
105 | !statfs(mntpt, &statfsbuf)) { |
106 | statfsbuf.f_mntonname[0] = '\0'; | |
b6f929c6 | 107 | prtstat(&statfsbuf, maxwidth); |
fc2797e7 KB |
108 | } else |
109 | fprintf(stderr, "df: %s: %s\n", | |
110 | *argv, strerror(errno)); | |
adc92dc2 | 111 | (void)unmount(mntpt, MNT_NOFORCE); |
fc2797e7 | 112 | (void)rmdir(mntpt); |
1e568652 | 113 | continue; |
819bc686 | 114 | } |
1e568652 KM |
115 | } else |
116 | mntpt = *argv; | |
93e6cf82 KM |
117 | /* |
118 | * Statfs does not take a `wait' flag, so we cannot | |
119 | * implement nflag here. | |
120 | */ | |
1e568652 | 121 | if (statfs(mntpt, &statfsbuf) < 0) { |
fc2797e7 KB |
122 | fprintf(stderr, |
123 | "df: %s: %s\n", mntpt, strerror(errno)); | |
704aadd2 KM |
124 | continue; |
125 | } | |
b6f929c6 KM |
126 | if (argc == 1) |
127 | maxwidth = strlen(statfsbuf.f_mntfromname) + 1; | |
128 | prtstat(&statfsbuf, maxwidth); | |
704aadd2 KM |
129 | } |
130 | exit(0); | |
131 | } | |
132 | ||
1e568652 KM |
133 | char * |
134 | getmntpt(name) | |
135 | char *name; | |
136 | { | |
137 | long mntsize, i; | |
138 | struct statfs *mntbuf; | |
139 | ||
93e6cf82 | 140 | mntsize = getmntinfo(&mntbuf, (nflag ? MNT_NOWAIT : MNT_WAIT)); |
1e568652 KM |
141 | for (i = 0; i < mntsize; i++) { |
142 | if (!strcmp(mntbuf[i].f_mntfromname, name)) | |
143 | return (mntbuf[i].f_mntonname); | |
144 | } | |
145 | return (0); | |
146 | } | |
147 | ||
704aadd2 KM |
148 | /* |
149 | * Print out status about a filesystem. | |
150 | */ | |
b6f929c6 | 151 | prtstat(sfsp, maxwidth) |
704aadd2 | 152 | register struct statfs *sfsp; |
b6f929c6 | 153 | long maxwidth; |
704aadd2 KM |
154 | { |
155 | long used, availblks, inodes; | |
b6f929c6 | 156 | static int timesthrough; |
704aadd2 | 157 | |
b6f929c6 KM |
158 | if (maxwidth < 11) |
159 | maxwidth = 11; | |
160 | if (++timesthrough == 1) { | |
161 | printf("%-*.*s%s used avail capacity", | |
162 | maxwidth, maxwidth, "Filesystem", | |
163 | kflag ? " kbytes" : "512-blks"); | |
164 | if (iflag) | |
165 | printf(" iused ifree %%iused"); | |
166 | printf(" Mounted on\n"); | |
167 | } | |
168 | printf("%-*.*s", maxwidth, maxwidth, sfsp->f_mntfromname); | |
704aadd2 KM |
169 | used = sfsp->f_blocks - sfsp->f_bfree; |
170 | availblks = sfsp->f_bavail + used; | |
fc2797e7 KB |
171 | printf("%8ld%8ld%8ld", |
172 | sfsp->f_blocks * sfsp->f_fsize / (kflag ? 1024 : 512), | |
173 | used * sfsp->f_fsize / (kflag ? 1024 : 512), | |
174 | sfsp->f_bavail * sfsp->f_fsize / (kflag ? 1024 : 512)); | |
704aadd2 KM |
175 | printf("%6.0f%%", |
176 | availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0); | |
177 | if (iflag) { | |
178 | inodes = sfsp->f_files; | |
179 | used = inodes - sfsp->f_ffree; | |
180 | printf("%8ld%8ld%6.0f%% ", used, sfsp->f_ffree, | |
181 | inodes == 0 ? 100.0 : (double)used / (double)inodes * 100.0); | |
182 | } else | |
183 | printf(" "); | |
184 | printf(" %s\n", sfsp->f_mntonname); | |
185 | } | |
186 | ||
187 | #ifdef COMPAT_43 | |
188 | /* | |
189 | * This code constitutes the old df code for extracting | |
190 | * information from filesystem superblocks. | |
191 | */ | |
704aadd2 | 192 | #include <ufs/fs.h> |
704aadd2 KM |
193 | #include <errno.h> |
194 | #include <fstab.h> | |
704aadd2 | 195 | |
fc2797e7 | 196 | char root[MAXPATHLEN]; |
704aadd2 KM |
197 | |
198 | union { | |
199 | struct fs iu_fs; | |
200 | char dummy[SBSIZE]; | |
201 | } sb; | |
202 | #define sblock sb.iu_fs | |
203 | ||
204 | int fi; | |
205 | char *strcpy(); | |
206 | ||
b6f929c6 | 207 | olddf(argv, maxwidth) |
704aadd2 | 208 | char *argv[]; |
b6f929c6 | 209 | long maxwidth; |
704aadd2 KM |
210 | { |
211 | struct fstab *fsp; | |
704aadd2 | 212 | |
dda19894 | 213 | sync(); |
dbdc06d4 | 214 | if (!*argv) { |
8d335f7d | 215 | if (setfsent() == 0) |
3b72df1c | 216 | perror(_PATH_FSTAB), exit(1); |
a98f5f82 | 217 | while (fsp = getfsent()) { |
1f65a82f | 218 | if (strcmp(fsp->fs_type, FSTAB_RW) && |
351ef297 SL |
219 | strcmp(fsp->fs_type, FSTAB_RO) && |
220 | strcmp(fsp->fs_type, FSTAB_RQ)) | |
f0861f40 | 221 | continue; |
c7b72342 | 222 | if (root[0] == 0) |
f4d092e2 | 223 | (void) strcpy(root, fsp->fs_spec); |
b6f929c6 | 224 | dfree(fsp->fs_spec, 1, maxwidth); |
c7b72342 | 225 | } |
6c5c8ac3 | 226 | (void)endfsent(); |
c7b72342 BJ |
227 | exit(0); |
228 | } | |
dbdc06d4 | 229 | while (*argv) |
b6f929c6 | 230 | dfree(*argv++, 0, maxwidth); |
704aadd2 | 231 | exit(0); |
c7b72342 BJ |
232 | } |
233 | ||
b6f929c6 | 234 | dfree(file, infsent, maxwidth) |
a98f5f82 BJ |
235 | char *file; |
236 | int infsent; | |
b6f929c6 | 237 | long maxwidth; |
c7b72342 | 238 | { |
dbdc06d4 | 239 | extern int errno; |
a98f5f82 | 240 | struct stat stbuf; |
704aadd2 KM |
241 | struct statfs statfsbuf; |
242 | register struct statfs *sfsp; | |
a98f5f82 | 243 | struct fstab *fsp; |
fc2797e7 | 244 | char *mntpt; |
a98f5f82 BJ |
245 | |
246 | if (stat(file, &stbuf) == 0 && | |
247 | (stbuf.st_mode&S_IFMT) != S_IFCHR && | |
248 | (stbuf.st_mode&S_IFMT) != S_IFBLK) { | |
249 | if (infsent) { | |
fc2797e7 | 250 | fprintf(stderr, "df: %s: screwy fstab entry\n", file); |
8d335f7d BJ |
251 | return; |
252 | } | |
6c5c8ac3 | 253 | (void)setfsent(); |
a98f5f82 BJ |
254 | while (fsp = getfsent()) { |
255 | struct stat stb; | |
256 | ||
257 | if (stat(fsp->fs_spec, &stb) == 0 && | |
258 | stb.st_rdev == stbuf.st_dev) { | |
259 | file = fsp->fs_spec; | |
6c5c8ac3 | 260 | (void)endfsent(); |
a98f5f82 BJ |
261 | goto found; |
262 | } | |
263 | } | |
6c5c8ac3 | 264 | (void)endfsent(); |
fc2797e7 | 265 | fprintf(stderr, "df: %s: mounted on unknown device\n", file); |
a98f5f82 | 266 | return; |
8d335f7d | 267 | } |
a98f5f82 | 268 | found: |
fc2797e7 | 269 | if ((fi = open(file, O_RDONLY)) < 0) { |
dbdc06d4 | 270 | fprintf(stderr, "df: %s: %s\n", file, strerror(errno)); |
c7b72342 BJ |
271 | return; |
272 | } | |
6c5c8ac3 | 273 | if (bread((long)SBOFF, (char *)&sblock, SBSIZE) == 0) { |
f5064bf4 RC |
274 | (void) close(fi); |
275 | return; | |
276 | } | |
704aadd2 KM |
277 | sfsp = &statfsbuf; |
278 | sfsp->f_type = MOUNT_UFS; | |
279 | sfsp->f_flags = 0; | |
280 | sfsp->f_fsize = sblock.fs_fsize; | |
281 | sfsp->f_bsize = sblock.fs_bsize; | |
282 | sfsp->f_blocks = sblock.fs_dsize; | |
283 | sfsp->f_bfree = sblock.fs_cstotal.cs_nbfree * sblock.fs_frag + | |
284 | sblock.fs_cstotal.cs_nffree; | |
285 | sfsp->f_bavail = (sblock.fs_dsize * (100 - sblock.fs_minfree) / 100) - | |
286 | (sblock.fs_dsize - sfsp->f_bfree); | |
287 | if (sfsp->f_bavail < 0) | |
288 | sfsp->f_bavail = 0; | |
289 | sfsp->f_files = sblock.fs_ncg * sblock.fs_ipg; | |
290 | sfsp->f_ffree = sblock.fs_cstotal.cs_nifree; | |
291 | sfsp->f_fsid.val[0] = 0; | |
292 | sfsp->f_fsid.val[1] = 0; | |
1e568652 KM |
293 | if ((mntpt = getmntpt(file)) == 0) |
294 | mntpt = ""; | |
295 | bcopy((caddr_t)mntpt, (caddr_t)&sfsp->f_mntonname[0], MNAMELEN); | |
704aadd2 | 296 | bcopy((caddr_t)file, (caddr_t)&sfsp->f_mntfromname[0], MNAMELEN); |
b6f929c6 | 297 | prtstat(sfsp, maxwidth); |
f4d092e2 | 298 | (void) close(fi); |
c7b72342 BJ |
299 | } |
300 | ||
f4d092e2 KM |
301 | long lseek(); |
302 | ||
6c5c8ac3 KM |
303 | bread(off, buf, cnt) |
304 | long off; | |
a98f5f82 | 305 | char *buf; |
c7b72342 BJ |
306 | { |
307 | int n; | |
308 | extern errno; | |
309 | ||
fc2797e7 | 310 | (void) lseek(fi, off, SEEK_SET); |
a98f5f82 | 311 | if ((n=read(fi, buf, cnt)) != cnt) { |
f5064bf4 RC |
312 | /* probably a dismounted disk if errno == EIO */ |
313 | if (errno != EIO) { | |
6c5c8ac3 | 314 | printf("\nread error off = %ld\n", off); |
f5064bf4 RC |
315 | printf("count = %d; errno = %d\n", n, errno); |
316 | } | |
317 | return (0); | |
c7b72342 | 318 | } |
f5064bf4 | 319 | return (1); |
c7b72342 | 320 | } |
704aadd2 | 321 | #endif /* COMPAT_43 */ |