Contents of /trunk/mkinitrd-magellan/busybox/runit/runit_lib.h
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 11635 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | /* |
2 | Copyright (c) 2001-2006, Gerrit Pape |
3 | All rights reserved. |
4 | |
5 | Redistribution and use in source and binary forms, with or without |
6 | modification, are permitted provided that the following conditions are met: |
7 | |
8 | 1. Redistributions of source code must retain the above copyright notice, |
9 | this list of conditions and the following disclaimer. |
10 | 2. Redistributions in binary form must reproduce the above copyright |
11 | notice, this list of conditions and the following disclaimer in the |
12 | documentation and/or other materials provided with the distribution. |
13 | 3. The name of the author may not be used to endorse or promote products |
14 | derived from this software without specific prior written permission. |
15 | |
16 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
18 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
20 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
22 | OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
23 | WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
24 | OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
25 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | /*** buffer.h ***/ |
29 | |
30 | typedef struct buffer { |
31 | char *x; |
32 | unsigned p; |
33 | unsigned n; |
34 | int fd; |
35 | int (*op)(int fd,char *buf,unsigned len); |
36 | } buffer; |
37 | |
38 | #define BUFFER_INIT(op,fd,buf,len) { (buf), 0, (len), (fd), (op) } |
39 | #define BUFFER_INSIZE 8192 |
40 | #define BUFFER_OUTSIZE 8192 |
41 | |
42 | extern void buffer_init(buffer *,int (*)(int fd,char *buf,unsigned len),int,char *,unsigned); |
43 | |
44 | extern int buffer_flush(buffer *); |
45 | extern int buffer_put(buffer *,const char *,unsigned); |
46 | extern int buffer_putalign(buffer *,const char *,unsigned); |
47 | extern int buffer_putflush(buffer *,const char *,unsigned); |
48 | extern int buffer_puts(buffer *,const char *); |
49 | extern int buffer_putsalign(buffer *,const char *); |
50 | extern int buffer_putsflush(buffer *,const char *); |
51 | |
52 | #define buffer_PUTC(s,c) \ |
53 | ( ((s)->n != (s)->p) \ |
54 | ? ( (s)->x[(s)->p++] = (c), 0 ) \ |
55 | : buffer_put((s),&(c),1) \ |
56 | ) |
57 | |
58 | extern int buffer_get(buffer *,char *,unsigned); |
59 | extern int buffer_bget(buffer *,char *,unsigned); |
60 | extern int buffer_feed(buffer *); |
61 | |
62 | extern char *buffer_peek(buffer *); |
63 | extern void buffer_seek(buffer *,unsigned); |
64 | |
65 | #define buffer_PEEK(s) ( (s)->x + (s)->n ) |
66 | #define buffer_SEEK(s,len) ( ( (s)->p -= (len) ) , ( (s)->n += (len) ) ) |
67 | |
68 | #define buffer_GETC(s,c) \ |
69 | ( ((s)->p > 0) \ |
70 | ? ( *(c) = (s)->x[(s)->n], buffer_SEEK((s),1), 1 ) \ |
71 | : buffer_get((s),(c),1) \ |
72 | ) |
73 | |
74 | extern int buffer_copy(buffer *,buffer *); |
75 | |
76 | extern int buffer_unixread(int,char *,unsigned); |
77 | /* Actually, int buffer_unixwrite(int,const char *,unsigned), |
78 | but that 'const' will produce warnings... oh well */ |
79 | extern int buffer_unixwrite(int,char *,unsigned); |
80 | |
81 | |
82 | /*** byte.h ***/ |
83 | |
84 | extern unsigned byte_chr(char *s,unsigned n,int c); |
85 | |
86 | |
87 | /*** coe.h ***/ |
88 | |
89 | extern int coe(int); |
90 | |
91 | |
92 | /*** direntry.h ***/ |
93 | |
94 | #define direntry struct dirent |
95 | |
96 | |
97 | /*** fd.h ***/ |
98 | |
99 | extern int fd_copy(int,int); |
100 | extern int fd_move(int,int); |
101 | |
102 | |
103 | /*** fifo.h ***/ |
104 | |
105 | extern int fifo_make(const char *,int); |
106 | |
107 | |
108 | /*** fmt.h ***/ |
109 | |
110 | #define FMT_ULONG 40 /* enough space to hold 2^128 - 1 in decimal, plus \0 */ |
111 | #define FMT_LEN ((char *) 0) /* convenient abbreviation */ |
112 | |
113 | extern unsigned fmt_uint(char *,unsigned); |
114 | extern unsigned fmt_uint0(char *,unsigned,unsigned); |
115 | extern unsigned fmt_xint(char *,unsigned); |
116 | extern unsigned fmt_nbbint(char *,unsigned,unsigned,unsigned,unsigned); |
117 | extern unsigned fmt_ushort(char *,unsigned short); |
118 | extern unsigned fmt_xshort(char *,unsigned short); |
119 | extern unsigned fmt_nbbshort(char *,unsigned,unsigned,unsigned,unsigned short); |
120 | extern unsigned fmt_ulong(char *,unsigned long); |
121 | extern unsigned fmt_xlong(char *,unsigned long); |
122 | extern unsigned fmt_nbblong(char *,unsigned,unsigned,unsigned,unsigned long); |
123 | |
124 | extern unsigned fmt_plusminus(char *,int); |
125 | extern unsigned fmt_minus(char *,int); |
126 | extern unsigned fmt_0x(char *,int); |
127 | |
128 | extern unsigned fmt_str(char *,const char *); |
129 | extern unsigned fmt_strn(char *,const char *,unsigned); |
130 | |
131 | |
132 | /*** tai.h ***/ |
133 | |
134 | struct tai { |
135 | uint64_t x; |
136 | } ; |
137 | |
138 | #define tai_unix(t,u) ((void) ((t)->x = 4611686018427387914ULL + (uint64_t) (u))) |
139 | |
140 | extern void tai_now(struct tai *); |
141 | |
142 | #define tai_approx(t) ((double) ((t)->x)) |
143 | |
144 | extern void tai_add(struct tai *,const struct tai *,const struct tai *); |
145 | extern void tai_sub(struct tai *,const struct tai *,const struct tai *); |
146 | #define tai_less(t,u) ((t)->x < (u)->x) |
147 | |
148 | #define TAI_PACK 8 |
149 | extern void tai_pack(char *,const struct tai *); |
150 | extern void tai_unpack(const char *,struct tai *); |
151 | |
152 | extern void tai_uint(struct tai *,unsigned); |
153 | |
154 | |
155 | /*** taia.h ***/ |
156 | |
157 | struct taia { |
158 | struct tai sec; |
159 | unsigned long nano; /* 0...999999999 */ |
160 | unsigned long atto; /* 0...999999999 */ |
161 | } ; |
162 | |
163 | extern void taia_tai(const struct taia *,struct tai *); |
164 | |
165 | extern void taia_now(struct taia *); |
166 | |
167 | extern double taia_approx(const struct taia *); |
168 | extern double taia_frac(const struct taia *); |
169 | |
170 | extern void taia_add(struct taia *,const struct taia *,const struct taia *); |
171 | extern void taia_addsec(struct taia *,const struct taia *,int); |
172 | extern void taia_sub(struct taia *,const struct taia *,const struct taia *); |
173 | extern void taia_half(struct taia *,const struct taia *); |
174 | extern int taia_less(const struct taia *,const struct taia *); |
175 | |
176 | #define TAIA_PACK 16 |
177 | extern void taia_pack(char *,const struct taia *); |
178 | extern void taia_unpack(const char *,struct taia *); |
179 | |
180 | #define TAIA_FMTFRAC 19 |
181 | extern unsigned taia_fmtfrac(char *,const struct taia *); |
182 | |
183 | extern void taia_uint(struct taia *,unsigned); |
184 | |
185 | |
186 | /*** fmt_ptime.h ***/ |
187 | |
188 | #define FMT_PTIME 30 |
189 | |
190 | extern unsigned fmt_ptime(char *, struct taia *); |
191 | extern unsigned fmt_taia(char *, struct taia *); |
192 | |
193 | |
194 | /*** gen_alloc.h ***/ |
195 | |
196 | #define GEN_ALLOC_typedef(ta,type,field,len,a) \ |
197 | typedef struct ta { type *field; unsigned len; unsigned a; } ta; |
198 | |
199 | |
200 | /*** gen_allocdefs.h ***/ |
201 | |
202 | #define GEN_ALLOC_ready(ta,type,field,len,a,i,n,x,base,ta_ready) \ |
203 | int ta_ready(ta *x,unsigned n) \ |
204 | { unsigned i; \ |
205 | if (x->field) { \ |
206 | i = x->a; \ |
207 | if (n > i) { \ |
208 | x->a = base + n + (n >> 3); \ |
209 | x->field = realloc(x->field,x->a * sizeof(type)); \ |
210 | if (x->field) return 1; \ |
211 | x->a = i; return 0; } \ |
212 | return 1; } \ |
213 | x->len = 0; \ |
214 | return !!(x->field = malloc((x->a = n) * sizeof(type))); } |
215 | |
216 | #define GEN_ALLOC_readyplus(ta,type,field,len,a,i,n,x,base,ta_rplus) \ |
217 | int ta_rplus(ta *x,unsigned n) \ |
218 | { unsigned i; \ |
219 | if (x->field) { \ |
220 | i = x->a; n += x->len; \ |
221 | if (n > i) { \ |
222 | x->a = base + n + (n >> 3); \ |
223 | x->field = realloc(x->field,x->a * sizeof(type)); \ |
224 | if (x->field) return 1; \ |
225 | x->a = i; return 0; } \ |
226 | return 1; } \ |
227 | x->len = 0; \ |
228 | return !!(x->field = malloc((x->a = n) * sizeof(type))); } |
229 | |
230 | #define GEN_ALLOC_append(ta,type,field,len,a,i,n,x,base,ta_rplus,ta_append) \ |
231 | int ta_append(ta *x,const type *i) \ |
232 | { if (!ta_rplus(x,1)) return 0; x->field[x->len++] = *i; return 1; } |
233 | |
234 | |
235 | /*** stralloc.h ***/ |
236 | #if 0 |
237 | GEN_ALLOC_typedef(stralloc,char,s,len,a) |
238 | |
239 | extern int stralloc_ready(stralloc *,unsigned); |
240 | extern int stralloc_readyplus(stralloc *,unsigned); |
241 | extern int stralloc_copy(stralloc *,const stralloc *); |
242 | extern int stralloc_cat(stralloc *,const stralloc *); |
243 | extern int stralloc_copys(stralloc *,const char *); |
244 | extern int stralloc_cats(stralloc *,const char *); |
245 | extern int stralloc_copyb(stralloc *,const char *,unsigned); |
246 | extern int stralloc_catb(stralloc *,const char *,unsigned); |
247 | extern int stralloc_append(stralloc *,const char *); /* beware: this takes a pointer to 1 char */ |
248 | extern int stralloc_starts(stralloc *,const char *); |
249 | |
250 | #define stralloc_0(sa) stralloc_append(sa,"") |
251 | |
252 | extern int stralloc_catulong0(stralloc *,unsigned long,unsigned); |
253 | extern int stralloc_catlong0(stralloc *,long,unsigned); |
254 | |
255 | #define stralloc_catlong(sa,l) (stralloc_catlong0((sa),(l),0)) |
256 | #define stralloc_catuint0(sa,i,n) (stralloc_catulong0((sa),(i),(n))) |
257 | #define stralloc_catint0(sa,i,n) (stralloc_catlong0((sa),(i),(n))) |
258 | #define stralloc_catint(sa,i) (stralloc_catlong0((sa),(i),0)) |
259 | #endif |
260 | |
261 | /*** iopause.h ***/ |
262 | |
263 | typedef struct pollfd iopause_fd; |
264 | #define IOPAUSE_READ POLLIN |
265 | #define IOPAUSE_WRITE POLLOUT |
266 | |
267 | extern void iopause(iopause_fd *,unsigned,struct taia *,struct taia *); |
268 | |
269 | |
270 | /*** lock.h ***/ |
271 | |
272 | extern int lock_ex(int); |
273 | extern int lock_un(int); |
274 | extern int lock_exnb(int); |
275 | |
276 | |
277 | /*** open.h ***/ |
278 | |
279 | extern int open_read(const char *); |
280 | extern int open_excl(const char *); |
281 | extern int open_append(const char *); |
282 | extern int open_trunc(const char *); |
283 | extern int open_write(const char *); |
284 | |
285 | |
286 | /*** openreadclose.h ***/ |
287 | #if 0 |
288 | extern int openreadclose(const char *,stralloc *,unsigned); |
289 | #endif |
290 | |
291 | /*** pathexec.h ***/ |
292 | |
293 | extern void pathexec_run(const char *,char *const *,char *const *); |
294 | extern int pathexec_env(const char *,const char *); |
295 | extern void pathexec(char **); |
296 | |
297 | |
298 | /*** pmatch.h ***/ |
299 | |
300 | extern unsigned pmatch(const char *, const char *, unsigned); |
301 | |
302 | |
303 | /*** prot.h ***/ |
304 | |
305 | extern int prot_gid(int); |
306 | extern int prot_uid(int); |
307 | |
308 | |
309 | /*** readclose.h ***/ |
310 | #if 0 |
311 | extern int readclose_append(int,stralloc *,unsigned); |
312 | extern int readclose(int,stralloc *,unsigned); |
313 | #endif |
314 | |
315 | /*** scan.h ***/ |
316 | |
317 | extern unsigned scan_uint(const char *,unsigned *); |
318 | extern unsigned scan_xint(const char *,unsigned *); |
319 | extern unsigned scan_nbbint(const char *,unsigned,unsigned,unsigned,unsigned *); |
320 | extern unsigned scan_ushort(const char *,unsigned short *); |
321 | extern unsigned scan_xshort(const char *,unsigned short *); |
322 | extern unsigned scan_nbbshort(const char *,unsigned,unsigned,unsigned,unsigned short *); |
323 | extern unsigned scan_ulong(const char *,unsigned long *); |
324 | extern unsigned scan_xlong(const char *,unsigned long *); |
325 | extern unsigned scan_nbblong(const char *,unsigned,unsigned,unsigned,unsigned long *); |
326 | |
327 | extern unsigned scan_plusminus(const char *,int *); |
328 | extern unsigned scan_0x(const char *,unsigned *); |
329 | |
330 | extern unsigned scan_whitenskip(const char *,unsigned); |
331 | extern unsigned scan_nonwhitenskip(const char *,unsigned); |
332 | extern unsigned scan_charsetnskip(const char *,const char *,unsigned); |
333 | extern unsigned scan_noncharsetnskip(const char *,const char *,unsigned); |
334 | |
335 | extern unsigned scan_strncmp(const char *,const char *,unsigned); |
336 | extern unsigned scan_memcmp(const char *,const char *,unsigned); |
337 | |
338 | extern unsigned scan_long(const char *,long *); |
339 | extern unsigned scan_8long(const char *,unsigned long *); |
340 | |
341 | |
342 | /*** seek.h ***/ |
343 | |
344 | typedef unsigned long seek_pos; |
345 | |
346 | extern seek_pos seek_cur(int); |
347 | |
348 | extern int seek_set(int,seek_pos); |
349 | extern int seek_end(int); |
350 | |
351 | extern int seek_trunc(int,seek_pos); |
352 | |
353 | #define seek_begin(fd) (seek_set((fd),(seek_pos) 0)) |
354 | |
355 | |
356 | /*** sig.h ***/ |
357 | |
358 | extern int sig_alarm; |
359 | extern int sig_child; |
360 | extern int sig_cont; |
361 | extern int sig_hangup; |
362 | extern int sig_int; |
363 | extern int sig_pipe; |
364 | extern int sig_term; |
365 | |
366 | extern void (*sig_defaulthandler)(int); |
367 | extern void (*sig_ignorehandler)(int); |
368 | |
369 | extern void sig_catch(int,void (*)(int)); |
370 | #define sig_ignore(s) (sig_catch((s),sig_ignorehandler)) |
371 | #define sig_uncatch(s) (sig_catch((s),sig_defaulthandler)) |
372 | |
373 | extern void sig_block(int); |
374 | extern void sig_unblock(int); |
375 | extern void sig_blocknone(void); |
376 | extern void sig_pause(void); |
377 | |
378 | extern void sig_dfl(int); |
379 | |
380 | |
381 | /*** str.h ***/ |
382 | |
383 | extern unsigned str_chr(const char *,int); /* never returns NULL */ |
384 | |
385 | #define str_diff(s,t) strcmp((s),(t)) |
386 | #define str_equal(s,t) (!strcmp((s),(t))) |
387 | |
388 | |
389 | /*** wait.h ***/ |
390 | |
391 | extern int wait_pid(int *wstat, int pid); |
392 | extern int wait_nohang(int *wstat); |
393 | |
394 | #define wait_crashed(w) ((w) & 127) |
395 | #define wait_exitcode(w) ((w) >> 8) |
396 | #define wait_stopsig(w) ((w) >> 8) |
397 | #define wait_stopped(w) (((w) & 127) == 127) |