Commit | Line | Data |
---|---|---|
51e45c89 KM |
1 | static char *sccsid = "@(#)itime.c 1.9 (Berkeley) %G%"; |
2 | ||
31dd475e | 3 | #include "dump.h" |
51e45c89 | 4 | #include <sys/file.h> |
31dd475e BJ |
5 | |
6 | char *prdate(d) | |
7 | time_t d; | |
8 | { | |
9 | char *p; | |
10 | ||
11 | if(d == 0) | |
12 | return("the epoch"); | |
13 | p = ctime(&d); | |
14 | p[24] = 0; | |
15 | return(p); | |
16 | } | |
17 | ||
18 | struct idates **idatev = 0; | |
19 | int nidates = 0; | |
20 | int idates_in = 0; | |
21 | struct itime *ithead = 0; | |
22 | ||
23 | inititimes() | |
24 | { | |
25 | FILE *df; | |
26 | register int i; | |
27 | register struct itime *itwalk; | |
51e45c89 | 28 | int fd; |
31dd475e BJ |
29 | |
30 | if (idates_in) | |
31 | return; | |
51e45c89 KM |
32 | if ((fd = open(increm, FSHLOCK|FRDONLY, 0600)) < 0) { |
33 | perror(increm); | |
34 | return; | |
35 | } | |
36 | if ((df = fdopen(fd, "r")) == NULL) { | |
31dd475e BJ |
37 | nidates = 0; |
38 | ithead = 0; | |
39 | } else { | |
40 | do{ | |
41 | itwalk=(struct itime *)calloc(1,sizeof (struct itime)); | |
42 | if (getrecord(df, &(itwalk->it_value)) < 0) | |
43 | break; | |
44 | nidates++; | |
45 | itwalk->it_next = ithead; | |
46 | ithead = itwalk; | |
47 | } while (1); | |
48 | fclose(df); | |
49 | } | |
50 | ||
51 | idates_in = 1; | |
52 | /* | |
53 | * arrayify the list, leaving enough room for the additional | |
54 | * record that we may have to add to the idate structure | |
55 | */ | |
56 | idatev = (struct idates **)calloc(nidates + 1,sizeof (struct idates *)); | |
57 | for (i = nidates-1, itwalk = ithead; i >= 0; i--, itwalk = itwalk->it_next) | |
58 | idatev[i] = &itwalk->it_value; | |
59 | } | |
60 | ||
61 | getitime() | |
62 | { | |
63 | register struct idates *ip; | |
64 | register int i; | |
65 | char *fname; | |
66 | ||
67 | fname = disk; | |
68 | #ifdef FDEBUG | |
69 | msg("Looking for name %s in increm = %s for delta = %c\n", | |
70 | fname, increm, incno); | |
71 | #endif | |
72 | spcl.c_ddate = 0; | |
73 | ||
74 | inititimes(); | |
75 | /* | |
76 | * Go find the entry with the same name for a lower increment | |
77 | * and older date | |
78 | */ | |
79 | ITITERATE(i, ip){ | |
80 | if(strncmp(fname, ip->id_name, | |
81 | sizeof (ip->id_name)) != 0) | |
82 | continue; | |
83 | if (ip->id_incno >= incno) | |
84 | continue; | |
85 | if (ip->id_ddate <= spcl.c_ddate) | |
86 | continue; | |
87 | spcl.c_ddate = ip->id_ddate; | |
88 | } | |
89 | } | |
90 | ||
91 | putitime() | |
92 | { | |
93 | FILE *df; | |
94 | register struct idates *itwalk; | |
95 | register int i; | |
51e45c89 | 96 | int fd; |
31dd475e BJ |
97 | char *fname; |
98 | ||
99 | if(uflag == 0) | |
100 | return; | |
51e45c89 KM |
101 | if ((fd = open(temp, FCREATE|FEXLOCK|FRDWR, 0600)) < 0) { |
102 | perror(temp); | |
103 | dumpabort(); | |
104 | } | |
105 | if ((df = fdopen(fd, "w")) == NULL) { | |
106 | perror(temp); | |
107 | dumpabort(); | |
108 | } | |
31dd475e | 109 | fname = disk; |
9dcdb908 KM |
110 | free(idatev); |
111 | idatev = 0; | |
112 | nidates = 0; | |
113 | ithead = 0; | |
114 | idates_in = 0; | |
115 | inititimes(); | |
31dd475e BJ |
116 | |
117 | spcl.c_ddate = 0; | |
118 | ITITERATE(i, itwalk){ | |
119 | if (strncmp(fname, itwalk->id_name, | |
120 | sizeof (itwalk->id_name)) != 0) | |
121 | continue; | |
122 | if (itwalk->id_incno != incno) | |
123 | continue; | |
124 | goto found; | |
125 | } | |
126 | /* | |
127 | * construct the new upper bound; | |
128 | * Enough room has been allocated. | |
129 | */ | |
130 | itwalk = idatev[nidates] = | |
131 | (struct idates *)calloc(1, sizeof(struct idates)); | |
132 | nidates += 1; | |
133 | found: | |
134 | strncpy(itwalk->id_name, fname, sizeof (itwalk->id_name)); | |
135 | itwalk->id_incno = incno; | |
136 | itwalk->id_ddate = spcl.c_date; | |
137 | ||
31dd475e BJ |
138 | ITITERATE(i, itwalk){ |
139 | recout(df, itwalk); | |
140 | } | |
51e45c89 KM |
141 | if (rename(temp, increm) < 0) { |
142 | perror("rename"); | |
143 | (void) unlink(temp); | |
144 | dumpabort(); | |
145 | } | |
146 | (void) chmod(increm, 0644); | |
147 | (void) fclose(df); | |
31dd475e BJ |
148 | msg("level %c dump on %s\n", incno, prdate(spcl.c_date)); |
149 | } | |
150 | ||
151 | recout(file, what) | |
152 | FILE *file; | |
153 | struct idates *what; | |
154 | { | |
155 | fprintf(file, DUMPOUTFMT, | |
156 | what->id_name, | |
157 | what->id_incno, | |
158 | ctime(&(what->id_ddate)) | |
159 | ); | |
160 | } | |
161 | ||
162 | int recno; | |
163 | int getrecord(df, idatep) | |
164 | FILE *df; | |
165 | struct idates *idatep; | |
166 | { | |
167 | char buf[BUFSIZ]; | |
168 | ||
169 | recno = 0; | |
170 | if ( (fgets(buf, BUFSIZ, df)) != buf) | |
171 | return(-1); | |
172 | recno++; | |
173 | if (makeidate(idatep, buf) < 0) | |
174 | msg("Unknown intermediate format in %s, line %d\n", | |
51e45c89 | 175 | increm, recno); |
31dd475e BJ |
176 | |
177 | #ifdef FDEBUG | |
178 | msg("getrecord: %s %c %s\n", | |
179 | idatep->id_name, idatep->id_incno, prdate(idatep->id_ddate)); | |
180 | #endif | |
181 | return(0); | |
182 | } | |
183 | ||
31dd475e BJ |
184 | time_t unctime(); |
185 | ||
186 | int makeidate(ip, buf) | |
187 | struct idates *ip; | |
188 | char *buf; | |
189 | { | |
190 | char un_buf[128]; | |
191 | ||
192 | sscanf(buf, DUMPINFMT, ip->id_name, &ip->id_incno, un_buf); | |
193 | ip->id_ddate = unctime(un_buf); | |
194 | if (ip->id_ddate < 0) | |
195 | return(-1); | |
196 | return(0); | |
197 | } | |
198 | ||
003a2a9e | 199 | /* |
b6407c9d | 200 | * This is an estimation of the number of TP_BSIZE blocks in the file. |
003a2a9e KM |
201 | * It assumes that there are no unallocated blocks; hence |
202 | * the estimate may be high | |
203 | */ | |
31dd475e BJ |
204 | est(ip) |
205 | struct dinode *ip; | |
206 | { | |
207 | long s; | |
208 | ||
209 | esize++; | |
b6407c9d | 210 | /* calc number of TP_BSIZE blocks */ |
184c56be | 211 | s = howmany(ip->di_size, TP_BSIZE); |
b6407c9d KM |
212 | if (ip->di_size > sblock->fs_bsize * NDADDR) { |
213 | /* calc number of indirect blocks on the dump tape */ | |
092ee994 | 214 | s += howmany(s - NDADDR * sblock->fs_bsize / TP_BSIZE, |
b6407c9d | 215 | TP_NINDIR); |
31dd475e | 216 | } |
b6407c9d | 217 | esize += s; |
31dd475e BJ |
218 | } |
219 | ||
220 | bmapest(map) | |
b6407c9d | 221 | char *map; |
31dd475e BJ |
222 | { |
223 | register i, n; | |
224 | ||
225 | n = -1; | |
b6407c9d | 226 | for (i = 0; i < msiz; i++) |
31dd475e BJ |
227 | if(map[i]) |
228 | n = i; | |
229 | if(n < 0) | |
230 | return; | |
b6407c9d | 231 | n++; |
31dd475e | 232 | esize++; |
b6407c9d | 233 | esize += howmany(n * sizeof map[0], TP_BSIZE); |
31dd475e | 234 | } |