tconfig.c - plan9port - [fork] Plan 9 from user space
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tconfig.c (5725B)
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1 #include "stdinc.h"
2 #include "dat.h"
3 #include "fns.h"
4
5 Index *mainindex;
6 int paranoid = 1; /* should verify hashes on disk read */
7
8 static ArenaPart *configarenas(char *file);
9 static ISect *configisect(char *file);
10 static Bloom *configbloom(char *file);
11
12 int
13 initventi(char *file, Config *conf)
14 {
15 statsinit();
16
17 if(file == nil){
18 seterr(EOk, "no configuration file");
19 return -1;
20 }
21 if(runconfig(file, conf) < 0){
22 seterr(EOk, "can't initialize venti: %r");
23 return -1;
24 }
25 mainindex = initindex(conf->index, conf->sects, conf->nsects);
26 if(mainindex == nil)
27 return -1;
28 mainindex->bloom = conf->bloom;
29 return 0;
30 }
31
32 static int
33 numok(char *s)
34 {
35 char *p;
36
37 strtoull(s, &p, 0);
38 if(p == s)
39 return -1;
40 if(*p == 0)
41 return 0;
42 if(p[1] == 0 && strchr("MmGgKk", *p))
43 return 0;
44 return 0;
45 }
46
47 /*
48 * configs :
49 * | configs config
50 * config : "isect" filename
51 * | "arenas" filename
52 * | "index" name
53 * | "bcmem" num
54 * | "mem" num
55 * | "icmem" num
56 * | "queuewrites"
57 * | "httpaddr" address
58 * | "addr" address
59 *
60 * '#' and \n delimit comments
61 */
62 enum
63 {
64 MaxArgs = 2
65 };
66 int
67 runconfig(char *file, Config *config)
68 {
69 ArenaPart **av;
70 ISect **sv;
71 IFile f;
72 char *s, *line, *flds[MaxArgs + 1];
73 int i, ok;
74
75 if(readifile(&f, file) < 0)
76 return -1;
77 memset(config, 0, sizeof *config);
78 config->mem = Unspecified;
79 ok = -1;
80 line = nil;
81 for(;;){
82 s = ifileline(&f);
83 if(s == nil){
84 ok = 0;
85 break;
86 }
87 line = estrdup(s);
88 i = getfields(s, flds, MaxArgs + 1, 1, " \t\r");
89 if(i > 0 && strcmp(flds[0], "mgr") == 0){
90 /* do nothing */
91 }else if(i == 2 && strcmp(flds[0], "isect") == 0){
92 sv = MKN(ISect*, config->nsects + 1);
93 for(i = 0; i < config->nsects; i++)
94 sv[i] = config->sects[i];
95 free(config->sects);
96 config->sects = sv;
97 config->sects[config->nsects] = configisect(flds[1]);
98 if(config->sects[config->nsects] == nil)
99 break;
100 config->nsects++;
101 }else if(i == 2 && strcmp(flds[0], "arenas") == 0){
102 av = MKN(ArenaPart*, config->naparts + 1);
103 for(i = 0; i < config->naparts; i++)
104 av[i] = config->aparts[i];
105 free(config->aparts);
106 config->aparts = av;
107 config->aparts[config->naparts] = configarenas(flds[1]);
108 if(config->aparts[config->naparts] == nil)
109 break;
110 config->naparts++;
111 }else if(i == 2 && strcmp(flds[0], "bloom") == 0){
112 if(config->bloom){
113 seterr(EAdmin, "duplicate bloom lines in configuration file %s", file);
114 break;
115 }
116 if((config->bloom = configbloom(flds[1])) == nil)
117 break;
118 }else if(i == 2 && strcmp(flds[0], "index") == 0){
119 if(nameok(flds[1]) < 0){
120 seterr(EAdmin, "illegal index name %s in config file %s", flds[1], file);
121 break;
122 }
123 if(config->index != nil){
124 seterr(EAdmin, "duplicate indices in config file %s", file);
125 break;
126 }
127 config->index = estrdup(flds[1]);
128 }else if(i == 2 && strcmp(flds[0], "bcmem") == 0){
129 if(numok(flds[1]) < 0){
130 seterr(EAdmin, "illegal size %s in config file %s",
131 flds[1], file);
132 break;
133 }
134 if(config->bcmem != 0){
135 seterr(EAdmin, "duplicate bcmem lines in config file %s", file);
136 break;
137 }
138 config->bcmem = unittoull(flds[1]);
139 }else if(i == 2 && strcmp(flds[0], "mem") == 0){
140 if(numok(flds[1]) < 0){
141 seterr(EAdmin, "illegal size %s in config file %s",
142 flds[1], file);
143 break;
144 }
145 if(config->mem != Unspecified){
146 seterr(EAdmin, "duplicate mem lines in config file %s", file);
147 break;
148 }
149 config->mem = unittoull(flds[1]);
150 }else if(i == 2 && strcmp(flds[0], "icmem") == 0){
151 if(numok(flds[1]) < 0){
152 seterr(EAdmin, "illegal size %s in config file %s",
153 flds[1], file);
154 break;
155 }
156 if(config->icmem != 0){
157 seterr(EAdmin, "duplicate icmem lines in config file %s", file);
158 break;
159 }
160 config->icmem = unittoull(flds[1]);
161 }else if(i == 1 && strcmp(flds[0], "queuewrites") == 0){
162 config->queuewrites = 1;
163 }else if(i == 2 && strcmp(flds[0], "httpaddr") == 0){
164 if(config->haddr){
165 seterr(EAdmin, "duplicate httpaddr lines in configuration file %s", file);
166 break;
167 }
168 config->haddr = estrdup(flds[1]);
169 }else if(i == 2 && strcmp(flds[0], "webroot") == 0){
170 if(config->webroot){
171 seterr(EAdmin, "duplicate webroot lines in configuration file %s", file);
172 break;
173 }
174 config->webroot = estrdup(flds[1]);
175 }else if(i == 2 && strcmp(flds[0], "addr") == 0){
176 if(config->vaddr){
177 seterr(EAdmin, "duplicate addr lines in configuration file %s", file);
178 break;
179 }
180 config->vaddr = estrdup(flds[1]);
181 }else{
182 seterr(EAdmin, "illegal line '%s' in configuration file %s", line, file);
183 break;
184 }
185 free(line);
186 line = nil;
187 }
188 free(line);
189 freeifile(&f);
190 if(ok < 0){
191 free(config->sects);
192 config->sects = nil;
193 free(config->aparts);
194 config->aparts = nil;
195 }
196 return ok;
197 }
198
199 static ISect*
200 configisect(char *file)
201 {
202 Part *part;
203 ISect *is;
204
205 if(0) fprint(2, "configure index section in %s\n", file);
206
207 part = initpart(file, ORDWR|ODIRECT);
208 if(part == nil)
209 return nil;
210 is = initisect(part);
211 if(is == nil)
212 werrstr("%s: %r", file);
213 return is;
214 }
215
216 static ArenaPart*
217 configarenas(char *file)
218 {
219 ArenaPart *ap;
220 Part *part;
221
222 if(0) fprint(2, "configure arenas in %s\n", file);
223 part = initpart(file, ORDWR|ODIRECT);
224 if(part == nil)
225 return nil;
226 ap = initarenapart(part);
227 if(ap == nil)
228 werrstr("%s: %r", file);
229 return ap;
230 }
231
232 static Bloom*
233 configbloom(char *file)
234 {
235 Bloom *b;
236 Part *part;
237
238 if(0) fprint(2, "configure bloom in %s\n", file);
239 part = initpart(file, ORDWR|ODIRECT);
240 if(part == nil)
241 return nil;
242 b = readbloom(part);
243 if(b == nil){
244 werrstr("%s: %r", file);
245 freepart(part);
246 }
247 return b;
248 }
249
250 /* for OS X linker, which only resolves functions, not data */
251 void
252 needmainindex(void)
253 {
254 }