#include "dlfcn.h"
+#include "string.h"
+#include "stdio.h"
#define INCL_BASE
#include <os2.h>
static ULONG retcode;
+static char fail[300];
+
+char *os2error(int rc);
void *
-dlopen(char *path, int mode)
+dlopen(const char *path, int mode)
{
HMODULE handle;
char tmp[260], *beg, *dot;
- char fail[300];
ULONG rc;
- if ((rc = DosLoadModule(fail, sizeof fail, path, &handle)) == 0)
+ fail[0] = 0;
+ if ((rc = DosLoadModule(fail, sizeof fail, (char*)path, &handle)) == 0)
return (void *)handle;
retcode = rc;
+ if (strlen(path) >= sizeof(tmp))
+ return NULL;
+
/* Not found. Check for non-FAT name and try truncated name. */
/* Don't know if this helps though... */
for (beg = dot = path + strlen(path);
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)
}
void *
-dlsym(void *handle, char *symbol)
+dlsym(void *handle, const 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);
char *
dlerror(void)
{
- static char buf[300];
+ static char buf[700];
ULONG len;
+ char *err;
if (retcode == 0)
return NULL;
- if (DosGetMessage(NULL, 0, buf, sizeof buf - 1, retcode, "OSO001.MSG", &len))
- sprintf(buf, "OS/2 system error code %d", retcode);
- else
- buf[len] = '\0';
+ err = os2error(retcode);
+ len = strlen(err);
+ if (len > sizeof(buf) - 1)
+ len = sizeof(buf) - 1;
+ strncpy(buf, err, len+1);
+ 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;
+}