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#include "dlfcn.h"
#define INCL_BASE
#include <os2.h>
static ULONG retcode;
static char fail[300];
void *
dlopen(char *path, int mode)
{
HMODULE handle;
char tmp[260], *beg, *dot;
ULONG rc;
fail[0] = 0;
if ((rc = DosLoadModule(fail, sizeof fail, path, &handle)) == 0)
return (void *)handle;
retcode = rc;
/* Not found. Check for non-FAT name and try truncated name. */
/* Don't know if this helps though... */
for (beg = dot = path + strlen(path);
beg > path && !strchr(":/\\", *(beg-1));
beg--)
if (*beg == '.')
dot = beg;
if (dot - beg > 8) {
int n = beg+8-path;
memmove(tmp, path, n);
memmove(tmp+n, dot, strlen(dot)+1);
if (DosLoadModule(fail, sizeof fail, tmp, &handle) == 0)
return (void *)handle;
}
return NULL;
}
void *
dlsym(void *handle, char *symbol)
{
ULONG rc, type;
PFN addr;
fail[0] = 0;
rc = DosQueryProcAddr((HMODULE)handle, 0, symbol, &addr);
if (rc == 0) {
rc = DosQueryProcType((HMODULE)handle, 0, symbol, &type);
if (rc == 0 && type == PT_32BIT)
return (void *)addr;
rc = ERROR_CALL_NOT_IMPLEMENTED;
}
retcode = rc;
return NULL;
}
char *
dlerror(void)
{
static char buf[700];
ULONG len;
if (retcode == 0)
return NULL;
if (DosGetMessage(NULL, 0, buf, sizeof buf - 1, retcode,
"OSO001.MSG", &len)) {
if (fail[0])
sprintf(buf,
"OS/2 system error code %d, possible problematic module: '%s'",
retcode, fail);
else
sprintf(buf, "OS/2 system error code %d", retcode);
} else {
buf[len] = '\0';
if (len && buf[len - 1] == '\n')
buf[--len] = 0;
if (len && buf[len - 1] == '\r')
buf[--len] = 0;
if (len && buf[len - 1] == '.')
buf[--len] = 0;
if (fail[0] && len < 300)
sprintf(buf + len, ", possible problematic module: '%s'",
fail);
}
retcode = 0;
return buf;
}
int
dlclose(void *handle)
{
ULONG rc;
if ((rc = DosFreeModule((HMODULE)handle)) == 0) return 0;
retcode = rc;
return 2;
}
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