diff options
Diffstat (limited to 'src/ldso/dynlink.c')
| -rw-r--r-- | src/ldso/dynlink.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c index 935367e3..782e979f 100644 --- a/src/ldso/dynlink.c +++ b/src/ldso/dynlink.c @@ -1091,6 +1091,15 @@ end: return p; } +static int invalid_dso_handle(struct dso *h) +{ + struct dso *p; + for (p=head; p; p=p->next) if (h==p) return 0; + snprintf(errbuf, sizeof errbuf, "Invalid library handle %p", (void *)h); + errflag = 1; + return 1; +} + static void *do_dlsym(struct dso *p, const char *s, void *ra) { size_t i; @@ -1110,6 +1119,7 @@ static void *do_dlsym(struct dso *p, const char *s, void *ra) return __tls_get_addr((size_t []){def.dso->tls_id, def.sym->st_value}); return def.dso->base + def.sym->st_value; } + if (invalid_dso_handle(p)) return 0; if (p->ghashtab) { gh = gnu_hash(s); sym = gnu_lookup(s, gh, p); @@ -1236,6 +1246,12 @@ int dl_iterate_phdr(int(*callback)(struct dl_phdr_info *info, size_t size, void return ret; } #else +static int invalid_dso_handle(struct dso *h) +{ + snprintf(errbuf, sizeof errbuf, "Invalid library handle %p", (void *)h); + errflag = 1; + return 1; +} void *dlopen(const char *file, int mode) { return 0; @@ -1259,5 +1275,5 @@ char *dlerror() int dlclose(void *p) { - return 0; + return invalid_dso_handle(p); } |