Contents of /trunk/mkinitrd-magellan/klibc/usr/dash/memalloc.h
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Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
File MIME type: text/plain
File size: 3322 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) 1991, 1993 |
3 | * The Regents of the University of California. All rights reserved. |
4 | * Copyright (c) 1997-2005 |
5 | * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to Berkeley by |
8 | * Kenneth Almquist. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * 3. Neither the name of the University nor the names of its contributors |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | * SUCH DAMAGE. |
33 | * |
34 | * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 |
35 | */ |
36 | |
37 | #include <stddef.h> |
38 | |
39 | struct stackmark { |
40 | struct stack_block *stackp; |
41 | char *stacknxt; |
42 | size_t stacknleft; |
43 | struct stackmark *marknext; |
44 | }; |
45 | |
46 | |
47 | extern char *stacknxt; |
48 | extern size_t stacknleft; |
49 | extern char *sstrend; |
50 | extern int herefd; |
51 | |
52 | pointer ckmalloc(size_t); |
53 | pointer ckrealloc(pointer, size_t); |
54 | char *savestr(const char *); |
55 | pointer stalloc(size_t); |
56 | void stunalloc(pointer); |
57 | void setstackmark(struct stackmark *); |
58 | void popstackmark(struct stackmark *); |
59 | void growstackblock(void); |
60 | void grabstackblock(size_t); |
61 | void *growstackstr(void); |
62 | char *makestrspace(size_t, char *); |
63 | char *stnputs(const char *, size_t, char *); |
64 | char *stputs(const char *, char *); |
65 | |
66 | |
67 | static inline char *_STPUTC(char c, char *p) { |
68 | if (p == sstrend) |
69 | p = growstackstr(); |
70 | *p++ = c; |
71 | return p; |
72 | } |
73 | |
74 | #define stackblock() ((void *)stacknxt) |
75 | #define stackblocksize() stacknleft |
76 | #define STARTSTACKSTR(p) ((p) = stackblock()) |
77 | #define STPUTC(c, p) ((p) = _STPUTC((c), (p))) |
78 | #define CHECKSTRSPACE(n, p) \ |
79 | ({ \ |
80 | char *q = (p); \ |
81 | size_t l = (n); \ |
82 | size_t m = sstrend - q; \ |
83 | if (l > m) \ |
84 | (p) = makestrspace(l, q); \ |
85 | 0; \ |
86 | }) |
87 | #define USTPUTC(c, p) (*p++ = (c)) |
88 | #define STACKSTRNUL(p) ((p) == sstrend? (p = growstackstr(), *p = '\0') : (*p = '\0')) |
89 | #define STUNPUTC(p) (--p) |
90 | #define STTOPC(p) p[-1] |
91 | #define STADJUST(amount, p) (p += (amount)) |
92 | |
93 | #define grabstackstr(p) stalloc((char *)(p) - (char *)stackblock()) |
94 | #define ungrabstackstr(s, p) stunalloc((s)) |
95 | #define stackstrend() ((void *)sstrend) |
96 | |
97 | #define ckfree(p) free((pointer)(p)) |