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implement minimal dlinfo function

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This commit is contained in:
Rich Felker 2013-06-29 12:46:46 -04:00
parent 2b0af609ef
commit 780cbbe63a
3 changed files with 23 additions and 0 deletions
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3
include/dlfcn.h
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@ -17,6 +17,8 @@ extern "C" {
#define RTLD_NEXT ((void *)-1)
#define RTLD_DEFAULT ((void *)0)
#define RTLD_DI_LINKMAP 2
int dlclose(void *);
char *dlerror(void);
void *dlopen(const char *, int);
@ -30,6 +32,7 @@ typedef struct {
void *dli_saddr;
} Dl_info;
int dladdr(void *, Dl_info *);
int dlinfo(void *, int, void *);
#endif
#ifdef __cplusplus

8
src/ldso/dlinfo.c Normal file
View File

@ -0,0 +1,8 @@
#include <dlfcn.h>
int __dlinfo(void *, int, void *);
int dlinfo(void *dso, int req, void *res)
{
return __dlinfo(dso, req, res);
}

12
src/ldso/dynlink.c
View File

@ -1273,6 +1273,18 @@ int __dladdr (void *addr, Dl_info *info)
}
#endif
int __dlinfo(void *dso, int req, void *res)
{
if (invalid_dso_handle(dso)) return -1;
if (req != RTLD_DI_LINKMAP) {
snprintf(errbuf, sizeof errbuf, "Unsupported request %d", req);
errflag = 1;
return -1;
}
*(struct link_map **)res = dso;
return 0;
}
char *dlerror()
{
if (!errflag) return 0;