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1.1 root 1: #ifndef lint
2: static char *sccsid = "@(#)mount.c 4.10 (Berkeley) 5/28/83";
3: #endif
4:
5: /*
6: * mount
7: */
8: #include <sys/param.h>
9:
10: #include <stdio.h>
11: #include <fstab.h>
12: #include <mtab.h>
13:
14: #define DNMAX (sizeof (mtab[0].m_dname) - 1)
15: #define PNMAX (sizeof (mtab[0].m_path) - 1)
16:
17: struct mtab mtab[NMOUNT];
18:
19: int all;
20: int ro;
21: int fake;
22: int verbose;
23: char *index(), *rindex();
24:
25: main(argc, argv)
26: int argc;
27: char **argv;
28: {
29: register struct mtab *mp;
30: register char *np;
31: int mf;
32: char *type = FSTAB_RW;
33:
34: mf = open("/etc/mtab", 0);
35: read(mf, (char *)mtab, sizeof (mtab));
36: if (argc == 1) {
37: for (mp = mtab; mp < &mtab[NMOUNT]; mp++)
38: if (mp->m_path[0] != '\0')
39: prmtab(mp);
40: exit(0);
41: }
42: top:
43: if (argc > 1) {
44: if (!strcmp(argv[1], "-a")) {
45: all++;
46: argc--, argv++;
47: goto top;
48: }
49: if (!strcmp(argv[1], "-r")) {
50: type = FSTAB_RO;
51: argc--, argv++;
52: goto top;
53: }
54: if (!strcmp(argv[1], "-f")) {
55: fake++;
56: argc--, argv++;
57: goto top;
58: }
59: if (!strcmp(argv[1], "-v")) {
60: verbose++;
61: argc--, argv++;
62: goto top;
63: }
64: }
65: if (all) {
66: struct fstab *fsp;
67:
68: if (argc > 1)
69: goto argcnt;
70: close(2); dup(1);
71: if (setfsent() == 0)
72: perror(FSTAB), exit(1);
73: while ((fsp = getfsent()) != 0) {
74: if (strcmp(fsp->fs_file, "/") == 0)
75: continue;
76: if (strcmp(fsp->fs_type, FSTAB_RO) &&
77: strcmp(fsp->fs_type, FSTAB_RW) &&
78: strcmp(fsp->fs_type, FSTAB_RQ))
79: continue;
80: mountfs(fsp->fs_spec, fsp->fs_file, fsp->fs_type);
81: }
82: exit(0);
83: }
84: if (argc == 2) {
85: struct fstab *fs;
86:
87: if (setfsent() == 0)
88: perror(FSTAB), exit(1);
89: fs = getfsfile(argv[1]);
90: if (fs == NULL)
91: goto argcnt;
92: mountfs(fs->fs_spec, fs->fs_file, type);
93: exit(0);
94: }
95: if (argc != 3) {
96: argcnt:
97: fprintf(stderr,
98: "usage: mount [ -a ] [ -r ] [ -f ] [ -v ] [ special dir ] [ dir ]\n");
99: exit(1);
100: }
101: mountfs(argv[1], argv[2], type);
102: }
103:
104: prmtab(mp)
105: register struct mtab *mp;
106: {
107:
108: printf("%s on %s", mp->m_dname, mp->m_path);
109: if (strcmp(mp->m_type, FSTAB_RO) == 0)
110: printf("\t(read-only)");
111: if (strcmp(mp->m_type, FSTAB_RQ) == 0)
112: printf("\t(with quotas)");
113: putchar('\n');
114: }
115:
116: mountfs(spec, name, type)
117: char *spec, *name, *type;
118: {
119: register char *np;
120: register struct mtab *mp;
121: int mf;
122:
123: if (!fake) {
124: if (mount(spec, name, strcmp(type, FSTAB_RO) == 0) < 0) {
125: fprintf(stderr, "%s on ", spec);
126: perror(name);
127: return;
128: }
129: /* we don't do quotas.... */
130: if (strcmp(type, FSTAB_RQ) == 0)
131: type = FSTAB_RW;
132: }
133: np = index(spec, '\0');
134: while (*--np == '/')
135: *np = '\0';
136: np = rindex(spec, '/');
137: if (np) {
138: *np++ = '\0';
139: spec = np;
140: }
141: for (mp = mtab; mp < &mtab[NMOUNT]; mp++)
142: if (strcmp(mp->m_dname, spec) == 0)
143: goto replace;
144: for (mp = mtab; mp < &mtab[NMOUNT]; mp++)
145: if (mp->m_path[0] == '\0')
146: goto replace;
147: return;
148: replace:
149: strncpy(mp->m_dname, spec, DNMAX);
150: mp->m_dname[DNMAX] = '\0';
151: strncpy(mp->m_path, name, PNMAX);
152: mp->m_path[PNMAX] = '\0';
153: strcpy(mp->m_type, type);
154: if (verbose)
155: prmtab(mp);
156: mp = mtab + NMOUNT - 1;
157: while (mp > mtab && mp->m_path[0] == '\0')
158: --mp;
159: mf = creat("/etc/mtab", 0644);
160: write(mf, (char *)mtab, (mp - mtab + 1) * sizeof (struct mtab));
161: close(mf);
162: return;
163: }
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