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replace stub with working strcasestr
[musl]
/
src
/
ldso
/
dynlink.c
diff --git
a/src/ldso/dynlink.c
b/src/ldso/dynlink.c
index
66f22be
..
efbec8f
100644
(file)
--- a/
src/ldso/dynlink.c
+++ b/
src/ldso/dynlink.c
@@
-99,6
+99,7
@@
static int ssp_used;
static int runtime;
static int ldd_mode;
static int ldso_fail;
static int runtime;
static int ldd_mode;
static int ldso_fail;
+static int noload;
static jmp_buf rtld_fail;
static pthread_rwlock_t lock;
static struct debug debug;
static jmp_buf rtld_fail;
static pthread_rwlock_t lock;
static struct debug debug;
@@
-433,8
+434,7
@@
static struct dso *load_library(const char *name)
{
char buf[2*NAME_MAX+2];
const char *pathname;
{
char buf[2*NAME_MAX+2];
const char *pathname;
- unsigned char *base, *map;
- size_t map_len;
+ unsigned char *map;
struct dso *p, temp_dso = {0};
int fd;
struct stat st;
struct dso *p, temp_dso = {0};
int fd;
struct stat st;
@@
-508,7
+508,7
@@
static struct dso *load_library(const char *name)
return p;
}
}
return p;
}
}
- map = map_library(fd, &temp_dso);
+ map =
noload ? 0 :
map_library(fd, &temp_dso);
close(fd);
if (!map) return 0;
close(fd);
if (!map) return 0;
@@
-527,7
+527,7
@@
static struct dso *load_library(const char *name)
}
p = calloc(1, alloc_size);
if (!p) {
}
p = calloc(1, alloc_size);
if (!p) {
- munmap(map, map_len);
+ munmap(map,
temp_dso.
map_len);
return 0;
}
memcpy(p, &temp_dso, sizeof temp_dso);
return 0;
}
memcpy(p, &temp_dso, sizeof temp_dso);
@@
-541,8
+541,8
@@
static struct dso *load_library(const char *name)
if (pathname != name) p->shortname = strrchr(p->name, '/')+1;
if (p->tls_image) {
if (runtime && !__pthread_self_init()) {
if (pathname != name) p->shortname = strrchr(p->name, '/')+1;
if (p->tls_image) {
if (runtime && !__pthread_self_init()) {
+ munmap(map, p->map_len);
free(p);
free(p);
- munmap(map, map_len);
return 0;
}
p->tls_id = ++tls_cnt;
return 0;
}
p->tls_id = ++tls_cnt;
@@
-566,7
+566,7
@@
static struct dso *load_library(const char *name)
p->prev = tail;
tail = p;
p->prev = tail;
tail = p;
- if (ldd_mode) dprintf(1, "\t%s => %s (%p)\n", name, pathname, base);
+ if (ldd_mode) dprintf(1, "\t%s => %s (%p)\n", name, pathname,
p->
base);
return p;
}
return p;
}
@@
-927,7
+927,8
@@
void *__dynlink(int argc, char **argv)
if (phdr->p_type == PT_LOAD)
vdso->base = (void *)(vdso_base - phdr->p_vaddr + phdr->p_offset);
}
if (phdr->p_type == PT_LOAD)
vdso->base = (void *)(vdso_base - phdr->p_vaddr + phdr->p_offset);
}
- vdso->name = vdso->shortname = "linux-gate.so.1";
+ vdso->name = "";
+ vdso->shortname = "linux-gate.so.1";
vdso->global = 1;
decode_dyn(vdso);
vdso->prev = lib;
vdso->global = 1;
decode_dyn(vdso);
vdso->prev = lib;
@@
-998,13
+999,16
@@
void *__dynlink(int argc, char **argv)
if (ssp_used) __init_ssp((void *)aux[AT_RANDOM]);
if (ssp_used) __init_ssp((void *)aux[AT_RANDOM]);
- atexit(do_fini);
- do_init_fini(tail);
-
errno = 0;
return (void *)aux[AT_ENTRY];
}
errno = 0;
return (void *)aux[AT_ENTRY];
}
+void __init_ldso_ctors(void)
+{
+ atexit(do_fini);
+ do_init_fini(tail);
+}
+
void *dlopen(const char *file, int mode)
{
struct dso *volatile p, *orig_tail, *next;
void *dlopen(const char *file, int mode)
{
struct dso *volatile p, *orig_tail, *next;
@@
-1023,6
+1027,7
@@
void *dlopen(const char *file, int mode)
orig_tls_offset = tls_offset;
orig_tls_align = tls_align;
orig_tail = tail;
orig_tls_offset = tls_offset;
orig_tls_align = tls_align;
orig_tail = tail;
+ noload = mode & RTLD_NOLOAD;
if (setjmp(rtld_fail)) {
/* Clean up anything new that was (partially) loaded */
if (setjmp(rtld_fail)) {
/* Clean up anything new that was (partially) loaded */
@@
-1046,8
+1051,10
@@
void *dlopen(const char *file, int mode)
} else p = load_library(file);
if (!p) {
} else p = load_library(file);
if (!p) {
- snprintf(errbuf, sizeof errbuf,
- "Error loading shared library %s: %m", file);
+ snprintf(errbuf, sizeof errbuf, noload ?
+ "Library %s is not already loaded" :
+ "Error loading shared library %s: %m",
+ file);
errflag = 1;
goto end;
}
errflag = 1;
goto end;
}
@@
-1087,6
+1094,15
@@
end:
return p;
}
return p;
}
+static int invalid_dso_handle(void *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;
static void *do_dlsym(struct dso *p, const char *s, void *ra)
{
size_t i;
@@
-1106,6
+1122,8
@@
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;
}
return __tls_get_addr((size_t []){def.dso->tls_id, def.sym->st_value});
return def.dso->base + def.sym->st_value;
}
+ if (p != RTLD_DEFAULT && p != RTLD_NEXT && invalid_dso_handle(p))
+ return 0;
if (p->ghashtab) {
gh = gnu_hash(s);
sym = gnu_lookup(s, gh, p);
if (p->ghashtab) {
gh = gnu_hash(s);
sym = gnu_lookup(s, gh, p);
@@
-1174,7
+1192,7
@@
int __dladdr(void *addr, Dl_info *info)
}
for (; nsym; nsym--, sym++) {
}
for (; nsym; nsym--, sym++) {
- if (sym->st_
shndx && sym->st_
value
+ if (sym->st_value
&& (1<<(sym->st_info&0xf) & OK_TYPES)
&& (1<<(sym->st_info>>4) & OK_BINDS)) {
void *symaddr = p->base + sym->st_value;
&& (1<<(sym->st_info&0xf) & OK_TYPES)
&& (1<<(sym->st_info>>4) & OK_BINDS)) {
void *symaddr = p->base + sym->st_value;
@@
-1232,6
+1250,12
@@
int dl_iterate_phdr(int(*callback)(struct dl_phdr_info *info, size_t size, void
return ret;
}
#else
return ret;
}
#else
+static int invalid_dso_handle(void *h)
+{
+ snprintf(errbuf, sizeof errbuf, "Invalid library handle %p", (void *)h);
+ errflag = 1;
+ return 1;
+}
void *dlopen(const char *file, int mode)
{
return 0;
void *dlopen(const char *file, int mode)
{
return 0;
@@
-1255,5
+1279,5
@@
char *dlerror()
int dlclose(void *p)
{
int dlclose(void *p)
{
- return
0
;
+ return
invalid_dso_handle(p)
;
}
}