Commit | Line | Data |
c692d670 |
1 | #include "dlfcn.h" |
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2 | #include "string.h" |
3 | #include "stdio.h" |
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4 | |
5 | #define INCL_BASE |
6 | #include <os2.h> |
7 | |
8 | static ULONG retcode; |
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9 | static char fail[300]; |
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10 | |
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11 | #ifdef PERL_CORE |
12 | |
13 | #include "EXTERN.h" |
14 | #include "perl.h" |
15 | |
16 | #else |
17 | |
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18 | char *os2error(int rc); |
19 | |
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20 | #endif |
21 | |
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22 | void * |
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23 | dlopen(const char *path, int mode) |
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24 | { |
25 | HMODULE handle; |
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26 | char tmp[260]; |
27 | const char *beg, *dot; |
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28 | ULONG rc; |
29 | |
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30 | fail[0] = 0; |
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31 | if ((rc = DosLoadModule(fail, sizeof fail, (char*)path, &handle)) == 0) |
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32 | return (void *)handle; |
33 | |
34 | retcode = rc; |
35 | |
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36 | if (strlen(path) >= sizeof(tmp)) |
37 | return NULL; |
38 | |
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39 | /* Not found. Check for non-FAT name and try truncated name. */ |
40 | /* Don't know if this helps though... */ |
41 | for (beg = dot = path + strlen(path); |
42 | beg > path && !strchr(":/\\", *(beg-1)); |
43 | beg--) |
44 | if (*beg == '.') |
45 | dot = beg; |
46 | if (dot - beg > 8) { |
47 | int n = beg+8-path; |
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48 | |
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49 | memmove(tmp, path, n); |
50 | memmove(tmp+n, dot, strlen(dot)+1); |
51 | if (DosLoadModule(fail, sizeof fail, tmp, &handle) == 0) |
52 | return (void *)handle; |
53 | } |
54 | |
55 | return NULL; |
56 | } |
57 | |
58 | void * |
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59 | dlsym(void *handle, const char *symbol) |
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60 | { |
61 | ULONG rc, type; |
62 | PFN addr; |
63 | |
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64 | fail[0] = 0; |
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65 | rc = DosQueryProcAddr((HMODULE)handle, 0, symbol, &addr); |
66 | if (rc == 0) { |
67 | rc = DosQueryProcType((HMODULE)handle, 0, symbol, &type); |
68 | if (rc == 0 && type == PT_32BIT) |
69 | return (void *)addr; |
70 | rc = ERROR_CALL_NOT_IMPLEMENTED; |
71 | } |
72 | retcode = rc; |
73 | return NULL; |
74 | } |
75 | |
76 | char * |
77 | dlerror(void) |
78 | { |
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79 | static char buf[700]; |
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80 | ULONG len; |
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81 | char *err; |
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82 | |
83 | if (retcode == 0) |
84 | return NULL; |
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85 | err = os2error(retcode); |
86 | len = strlen(err); |
87 | if (len > sizeof(buf) - 1) |
88 | len = sizeof(buf) - 1; |
89 | strncpy(buf, err, len+1); |
90 | if (fail[0] && len < 300) |
91 | sprintf(buf + len, ", possible problematic module: '%s'", fail); |
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92 | retcode = 0; |
93 | return buf; |
94 | } |
95 | |
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96 | int |
97 | dlclose(void *handle) |
98 | { |
99 | ULONG rc; |
100 | |
101 | if ((rc = DosFreeModule((HMODULE)handle)) == 0) return 0; |
102 | |
103 | retcode = rc; |
104 | return 2; |
105 | } |