Commit | Line | Data |
---|---|---|
c692d670 | 1 | #include "dlfcn.h" |
2d766320 IZ |
2 | #include "string.h" |
3 | #include "stdio.h" | |
c692d670 | 4 | |
5 | #define INCL_BASE | |
6 | #include <os2.h> | |
7 | ||
8 | static ULONG retcode; | |
ed344e4f | 9 | static char fail[300]; |
c692d670 | 10 | |
5c728af0 IZ |
11 | #ifdef PERL_CORE |
12 | ||
13 | #include "EXTERN.h" | |
14 | #include "perl.h" | |
15 | ||
16 | #else | |
17 | ||
9fed8b87 IZ |
18 | char *os2error(int rc); |
19 | ||
5c728af0 IZ |
20 | #endif |
21 | ||
c692d670 | 22 | void * |
35bc1fdc | 23 | dlopen(const char *path, int mode) |
c692d670 | 24 | { |
25 | HMODULE handle; | |
5c728af0 IZ |
26 | char tmp[260]; |
27 | const char *beg, *dot; | |
c692d670 | 28 | ULONG rc; |
29 | ||
ed344e4f | 30 | fail[0] = 0; |
35bc1fdc | 31 | if ((rc = DosLoadModule(fail, sizeof fail, (char*)path, &handle)) == 0) |
c692d670 | 32 | return (void *)handle; |
33 | ||
34 | retcode = rc; | |
35 | ||
35bc1fdc IZ |
36 | if (strlen(path) >= sizeof(tmp)) |
37 | return NULL; | |
38 | ||
c692d670 | 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; | |
35bc1fdc | 48 | |
c692d670 | 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 * | |
35bc1fdc | 59 | dlsym(void *handle, const char *symbol) |
c692d670 | 60 | { |
61 | ULONG rc, type; | |
62 | PFN addr; | |
63 | ||
ed344e4f | 64 | fail[0] = 0; |
c692d670 | 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 | { | |
ed344e4f | 79 | static char buf[700]; |
c692d670 | 80 | ULONG len; |
9fed8b87 | 81 | char *err; |
c692d670 | 82 | |
83 | if (retcode == 0) | |
84 | return NULL; | |
9fed8b87 IZ |
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); | |
c692d670 | 92 | retcode = 0; |
93 | return buf; | |
94 | } | |
95 | ||
403d6f8e GS |
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 | } |