Commit | Line | Data |
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bcf1365c DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
8 | char copyright[] = | |
9 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
10 | All rights reserved.\n"; | |
7e8aa4e0 | 11 | #endif /* not lint */ |
bcf1365c | 12 | |
97dd7000 | 13 | #ifndef lint |
f6c7ec9d | 14 | static char sccsid[] = "@(#)df.c 5.5 (Berkeley) %G%"; |
7e8aa4e0 | 15 | #endif /* not lint */ |
a98f5f82 | 16 | |
c7b72342 | 17 | #include <sys/param.h> |
f4d092e2 | 18 | #include <sys/fs.h> |
8d335f7d | 19 | #include <sys/stat.h> |
f5064bf4 | 20 | #include <errno.h> |
8a7d0cad SL |
21 | #include <stdio.h> |
22 | #include <fstab.h> | |
23 | #include <mtab.h> | |
dbdc06d4 | 24 | #include "pathnames.h" |
8a7d0cad | 25 | |
8d335f7d BJ |
26 | /* |
27 | * df | |
28 | */ | |
8a7d0cad | 29 | struct mtab mtab[NMOUNT]; |
a98f5f82 BJ |
30 | char root[32]; |
31 | char *mpath(); | |
c7b72342 | 32 | |
c7b72342 BJ |
33 | int iflag; |
34 | ||
f4d092e2 KM |
35 | union { |
36 | struct fs iu_fs; | |
37 | char dummy[SBSIZE]; | |
38 | } sb; | |
39 | #define sblock sb.iu_fs | |
c7b72342 BJ |
40 | |
41 | int fi; | |
42 | daddr_t alloc(); | |
f4d092e2 | 43 | char *strcpy(); |
c7b72342 BJ |
44 | |
45 | main(argc, argv) | |
a98f5f82 BJ |
46 | int argc; |
47 | char **argv; | |
c7b72342 | 48 | { |
dbdc06d4 KB |
49 | extern int errno, optind; |
50 | int ch, i; | |
51 | char *strerror(); | |
c7b72342 | 52 | |
dbdc06d4 KB |
53 | while ((ch = getopt(argc, argv, "i")) != EOF) |
54 | switch(ch) { | |
8a7d0cad SL |
55 | case 'i': |
56 | iflag++; | |
57 | break; | |
dbdc06d4 | 58 | case '?': |
8a7d0cad | 59 | default: |
dbdc06d4 KB |
60 | fprintf(stderr, "usage: df [-i] [filsys ...]\n"); |
61 | exit(1); | |
8a7d0cad | 62 | } |
dbdc06d4 KB |
63 | argc -= optind; |
64 | argv += optind; | |
65 | ||
66 | if ((i = open(_PATH_MTAB, 0)) < 0) { | |
67 | fprintf(stderr, "df: %s: %s\n", _PATH_MTAB, strerror(errno)); | |
68 | exit(1); | |
c7b72342 | 69 | } |
dbdc06d4 KB |
70 | (void) read(i, (char *)mtab, sizeof (mtab)); |
71 | (void) close(i); | |
dda19894 | 72 | sync(); |
f4d092e2 | 73 | printf("Filesystem kbytes used avail capacity"); |
c7b72342 | 74 | if (iflag) |
f4d092e2 KM |
75 | printf(" iused ifree %%iused"); |
76 | printf(" Mounted on\n"); | |
dbdc06d4 | 77 | if (!*argv) { |
a98f5f82 BJ |
78 | struct fstab *fsp; |
79 | ||
8d335f7d | 80 | if (setfsent() == 0) |
c7b72342 | 81 | perror(FSTAB), exit(1); |
a98f5f82 | 82 | while (fsp = getfsent()) { |
1f65a82f | 83 | if (strcmp(fsp->fs_type, FSTAB_RW) && |
351ef297 SL |
84 | strcmp(fsp->fs_type, FSTAB_RO) && |
85 | strcmp(fsp->fs_type, FSTAB_RQ)) | |
f0861f40 | 86 | continue; |
c7b72342 | 87 | if (root[0] == 0) |
f4d092e2 | 88 | (void) strcpy(root, fsp->fs_spec); |
a98f5f82 | 89 | dfree(fsp->fs_spec, 1); |
c7b72342 | 90 | } |
6c5c8ac3 | 91 | (void)endfsent(); |
c7b72342 BJ |
92 | exit(0); |
93 | } | |
dbdc06d4 KB |
94 | while (*argv) |
95 | dfree(*argv++, 0); | |
c7b72342 BJ |
96 | } |
97 | ||
a98f5f82 BJ |
98 | dfree(file, infsent) |
99 | char *file; | |
100 | int infsent; | |
c7b72342 | 101 | { |
dbdc06d4 | 102 | extern int errno; |
f4d092e2 | 103 | long totalblks, availblks, avail, free, used; |
a98f5f82 BJ |
104 | struct stat stbuf; |
105 | struct fstab *fsp; | |
dbdc06d4 | 106 | char *strerror(); |
a98f5f82 BJ |
107 | |
108 | if (stat(file, &stbuf) == 0 && | |
109 | (stbuf.st_mode&S_IFMT) != S_IFCHR && | |
110 | (stbuf.st_mode&S_IFMT) != S_IFBLK) { | |
111 | if (infsent) { | |
f6c7ec9d | 112 | fprintf(stderr, "%s: screwy fstab entry\n", file); |
8d335f7d BJ |
113 | return; |
114 | } | |
6c5c8ac3 | 115 | (void)setfsent(); |
a98f5f82 BJ |
116 | while (fsp = getfsent()) { |
117 | struct stat stb; | |
118 | ||
119 | if (stat(fsp->fs_spec, &stb) == 0 && | |
120 | stb.st_rdev == stbuf.st_dev) { | |
121 | file = fsp->fs_spec; | |
6c5c8ac3 | 122 | (void)endfsent(); |
a98f5f82 BJ |
123 | goto found; |
124 | } | |
125 | } | |
6c5c8ac3 | 126 | (void)endfsent(); |
a98f5f82 BJ |
127 | fprintf(stderr, "%s: mounted on unknown device\n", file); |
128 | return; | |
8d335f7d | 129 | } |
a98f5f82 | 130 | found: |
dbdc06d4 KB |
131 | if ((fi = open(file, 0)) < 0) { |
132 | fprintf(stderr, "df: %s: %s\n", file, strerror(errno)); | |
c7b72342 BJ |
133 | return; |
134 | } | |
6c5c8ac3 | 135 | if (bread((long)SBOFF, (char *)&sblock, SBSIZE) == 0) { |
f5064bf4 RC |
136 | (void) close(fi); |
137 | return; | |
138 | } | |
f4d092e2 KM |
139 | printf("%-12.12s", file); |
140 | totalblks = sblock.fs_dsize; | |
141 | free = sblock.fs_cstotal.cs_nbfree * sblock.fs_frag + | |
142 | sblock.fs_cstotal.cs_nffree; | |
143 | used = totalblks - free; | |
144 | availblks = totalblks * (100 - sblock.fs_minfree) / 100; | |
145 | avail = availblks > used ? availblks - used : 0; | |
dbdc06d4 | 146 | printf("%8ld%8ld%8ld", totalblks * sblock.fs_fsize / 1024, |
f4d092e2 KM |
147 | used * sblock.fs_fsize / 1024, avail * sblock.fs_fsize / 1024); |
148 | printf("%6.0f%%", | |
149 | availblks == 0 ? 0.0 : (double) used / (double) availblks * 100.0); | |
c7b72342 | 150 | if (iflag) { |
f4d092e2 KM |
151 | int inodes = sblock.fs_ncg * sblock.fs_ipg; |
152 | used = inodes - sblock.fs_cstotal.cs_nifree; | |
153 | printf("%8ld%8ld%6.0f%% ", used, sblock.fs_cstotal.cs_nifree, | |
154 | inodes == 0 ? 0.0 : (double)used / (double)inodes * 100.0); | |
155 | } else | |
156 | printf(" "); | |
157 | printf(" %s\n", mpath(file)); | |
158 | (void) close(fi); | |
c7b72342 BJ |
159 | } |
160 | ||
f4d092e2 KM |
161 | long lseek(); |
162 | ||
6c5c8ac3 KM |
163 | bread(off, buf, cnt) |
164 | long off; | |
a98f5f82 | 165 | char *buf; |
c7b72342 BJ |
166 | { |
167 | int n; | |
168 | extern errno; | |
169 | ||
6c5c8ac3 | 170 | (void) lseek(fi, off, 0); |
a98f5f82 | 171 | if ((n=read(fi, buf, cnt)) != cnt) { |
f5064bf4 RC |
172 | /* probably a dismounted disk if errno == EIO */ |
173 | if (errno != EIO) { | |
6c5c8ac3 | 174 | printf("\nread error off = %ld\n", off); |
f5064bf4 RC |
175 | printf("count = %d; errno = %d\n", n, errno); |
176 | } | |
177 | return (0); | |
c7b72342 | 178 | } |
f5064bf4 | 179 | return (1); |
c7b72342 BJ |
180 | } |
181 | ||
182 | /* | |
183 | * Given a name like /dev/rrp0h, returns the mounted path, like /usr. | |
184 | */ | |
8a7d0cad SL |
185 | char * |
186 | mpath(file) | |
a98f5f82 | 187 | char *file; |
c7b72342 | 188 | { |
8a7d0cad | 189 | register struct mtab *mp; |
c7b72342 BJ |
190 | |
191 | if (eq(file, root)) | |
8a7d0cad SL |
192 | return ("/"); |
193 | for (mp = mtab; mp < mtab + NMOUNT; mp++) | |
194 | if (eq(file, mp->m_dname)) | |
195 | return (mp->m_path); | |
c7b72342 BJ |
196 | return ""; |
197 | } | |
198 | ||
199 | eq(f1, f2) | |
a98f5f82 | 200 | char *f1, *f2; |
c7b72342 | 201 | { |
a98f5f82 | 202 | |
f6c7ec9d | 203 | if (strncmp(f1, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) |
c7b72342 | 204 | f1 += 5; |
f6c7ec9d | 205 | if (strncmp(f2, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) |
c7b72342 | 206 | f2 += 5; |
a98f5f82 BJ |
207 | if (!strcmp(f1, f2)) |
208 | return (1); | |
209 | if (*f1 == 'r' && !strcmp(f1+1, f2)) | |
210 | return (1); | |
211 | if (*f2 == 'r' && !strcmp(f1, f2+1)) | |
212 | return (1); | |
c7b72342 | 213 | if (*f1 == 'r' && *f2 == 'r' && strcmp(f1+1, f2+1) == 0) |
a98f5f82 BJ |
214 | return (1); |
215 | return (0); | |
c7b72342 | 216 | } |