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1 | #include "EXTERN.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
4 | |
5 | #ifdef NULL |
6 | #undef NULL |
7 | #endif |
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8 | #ifdef I_DBM |
9 | # include <dbm.h> |
10 | #else |
11 | # ifdef I_RPCSVC_DBM |
12 | # include <rpcsvc/dbm.h> |
13 | # endif |
14 | #endif |
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15 | |
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16 | #ifdef DBM_BUG_DUPLICATE_FREE |
17 | /* |
18 | * DBM on at least Ultrix and HPUX call dbmclose() from dbminit(), |
19 | * resulting in duplicate free() because dbmclose() does *not* |
20 | * check if it has already been called for this DBM. |
21 | * If some malloc/free calls have been done between dbmclose() and |
22 | * the next dbminit(), the memory might be used for something else when |
23 | * it is freed. |
24 | * Verified to work on ultrix4.3. Probably will work on HP/UX. |
25 | * Set DBM_BUG_DUPLICATE_FREE in the extension hint file. |
26 | */ |
27 | /* Close the previous dbm, and fail to open a new dbm */ |
28 | #define dbmclose() ((void) dbminit("/tmp/x/y/z/z/y")) |
29 | #endif |
30 | |
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31 | #include <fcntl.h> |
32 | |
33 | typedef void* ODBM_File; |
34 | |
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35 | #define odbm_FETCH(db,key) fetch(key) |
36 | #define odbm_STORE(db,key,value,flags) store(key,value) |
37 | #define odbm_DELETE(db,key) delete(key) |
38 | #define odbm_FIRSTKEY(db) firstkey() |
39 | #define odbm_NEXTKEY(db,key) nextkey(key) |
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40 | |
41 | static int dbmrefcnt; |
42 | |
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43 | #ifndef DBM_REPLACE |
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44 | #define DBM_REPLACE 0 |
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45 | #endif |
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46 | |
47 | MODULE = ODBM_File PACKAGE = ODBM_File PREFIX = odbm_ |
48 | |
49 | ODBM_File |
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50 | odbm_TIEHASH(dbtype, filename, flags, mode) |
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51 | char * dbtype |
52 | char * filename |
53 | int flags |
54 | int mode |
55 | CODE: |
56 | { |
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57 | char *tmpbuf; |
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58 | if (dbmrefcnt++) |
59 | croak("Old dbm can only open one database"); |
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60 | New(0, tmpbuf, strlen(filename) + 5, char); |
61 | SAVEFREEPV(tmpbuf); |
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62 | sprintf(tmpbuf,"%s.dir",filename); |
63 | if (stat(tmpbuf, &statbuf) < 0) { |
64 | if (flags & O_CREAT) { |
65 | if (mode < 0 || close(creat(tmpbuf,mode)) < 0) |
66 | croak("ODBM_File: Can't create %s", filename); |
67 | sprintf(tmpbuf,"%s.pag",filename); |
68 | if (close(creat(tmpbuf,mode)) < 0) |
69 | croak("ODBM_File: Can't create %s", filename); |
70 | } |
71 | else |
72 | croak("ODBM_FILE: Can't open %s", filename); |
73 | } |
74 | RETVAL = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0); |
75 | ST(0) = sv_mortalcopy(&sv_undef); |
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76 | sv_setptrobj(ST(0), RETVAL, dbtype); |
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77 | } |
78 | |
79 | void |
80 | DESTROY(db) |
81 | ODBM_File db |
82 | CODE: |
83 | dbmrefcnt--; |
84 | dbmclose(); |
85 | |
86 | datum |
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87 | odbm_FETCH(db, key) |
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88 | ODBM_File db |
89 | datum key |
90 | |
91 | int |
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92 | odbm_STORE(db, key, value, flags = DBM_REPLACE) |
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93 | ODBM_File db |
94 | datum key |
95 | datum value |
96 | int flags |
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97 | CLEANUP: |
98 | if (RETVAL) { |
99 | if (RETVAL < 0 && errno == EPERM) |
100 | croak("No write permission to odbm file"); |
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101 | croak("odbm store returned %d, errno %d, key \"%s\"", |
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102 | RETVAL,errno,key.dptr); |
103 | } |
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104 | |
105 | int |
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106 | odbm_DELETE(db, key) |
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107 | ODBM_File db |
108 | datum key |
109 | |
110 | datum |
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111 | odbm_FIRSTKEY(db) |
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112 | ODBM_File db |
113 | |
114 | datum |
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115 | odbm_NEXTKEY(db, key) |
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116 | ODBM_File db |
117 | datum key |
118 | |