#include <errno.h>
#include <limits.h>
#include <elf.h>
+#include <link.h>
#include <setjmp.h>
#include <pthread.h>
#include <ctype.h>
size_t *dynv;
struct dso *next, *prev;
+ Phdr *phdr;
+ int phnum;
int refcnt;
Sym *syms;
uint32_t *hashtab;
static struct dso *head, *tail, *ldso, *fini_head;
static char *env_path, *sys_path, *r_path;
+static unsigned long long gencnt;
static int ssp_used;
static int runtime;
static int ldd_mode;
eh->e_phoff = sizeof *eh;
}
ph = (void *)((char *)buf + eh->e_phoff);
+ dso->phdr = ph;
+ dso->phnum = eh->e_phnum;
for (i=eh->e_phnum; i; i--, ph=(void *)((char *)ph+eh->e_phentsize)) {
if (ph->p_type == PT_DYNAMIC)
dyn = ph->p_vaddr;
char buf[2*NAME_MAX+2];
const char *pathname;
unsigned char *base, *map;
- size_t dyno, map_len;
+ size_t map_len;
struct dso *p, temp_dso = {0};
int fd;
struct stat st;
lib->name = lib->shortname = "libc.so";
lib->global = 1;
ehdr = (void *)lib->base;
- find_map_range((void *)(aux[AT_BASE]+ehdr->e_phoff),
- ehdr->e_phnum, ehdr->e_phentsize, lib);
- lib->dynv = (void *)(lib->base + find_dyn(
- (void *)(aux[AT_BASE]+ehdr->e_phoff),
- ehdr->e_phnum, ehdr->e_phentsize));
+ lib->phnum = ehdr->e_phnum;
+ lib->phdr = (void *)(aux[AT_BASE]+ehdr->e_phoff);
+ find_map_range(lib->phdr, ehdr->e_phnum, ehdr->e_phentsize, lib);
+ lib->dynv = (void *)(lib->base + find_dyn(lib->phdr,
+ ehdr->e_phnum, ehdr->e_phentsize));
decode_dyn(lib);
if (aux[AT_PHDR]) {
size_t interp_off = 0;
size_t tls_image = 0;
/* Find load address of the main program, via AT_PHDR vs PT_PHDR. */
- phdr = (void *)aux[AT_PHDR];
+ app->phdr = phdr = (void *)aux[AT_PHDR];
+ app->phnum = aux[AT_PHNUM];
for (i=aux[AT_PHNUM]; i; i--, phdr=(void *)((char *)phdr + aux[AT_PHENT])) {
if (phdr->p_type == PT_PHDR)
app->base = (void *)(aux[AT_PHDR] - phdr->p_vaddr);
} else {
int fd;
char *ldname = argv[0];
- size_t dyno, l = strlen(ldname);
+ size_t l = strlen(ldname);
if (l >= 3 && !strcmp(ldname+l-3, "ldd")) ldd_mode = 1;
*argv++ = (void *)-1;
if (argv[0] && !strcmp(argv[0], "--")) *argv++ = (void *)-1;
close(fd);
lib->name = ldname;
app->name = argv[0];
+ app->phnum = ehdr->e_phnum;
+ app->phdr = (void *)(app->base + ehdr->e_phoff);
aux[AT_ENTRY] = ehdr->e_entry;
}
if (app->tls_size) {
/* Attach to vdso, if provided by the kernel */
if (search_vec(auxv, &vdso_base, AT_SYSINFO_EHDR)) {
ehdr = (void *)vdso_base;
- phdr = (void *)(vdso_base + ehdr->e_phoff);
+ vdso->phdr = phdr = (void *)(vdso_base + ehdr->e_phoff);
+ vdso->phnum = ehdr->e_phnum;
for (i=ehdr->e_phnum; i; i--, phdr=(void *)((char *)phdr + ehdr->e_phentsize)) {
if (phdr->p_type == PT_DYNAMIC)
vdso->dynv = (void *)(vdso_base + phdr->p_offset);
update_tls_size();
if (tls_cnt) {
- struct dso *p;
void *mem = mmap(0, libc.tls_size, PROT_READ|PROT_WRITE,
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
if (mem==MAP_FAILED ||
orig_tail = tail;
end:
__release_ptc();
+ if (p) gencnt++;
pthread_rwlock_unlock(&lock);
if (p) do_init_fini(orig_tail);
pthread_setcancelstate(cs, 0);
uint32_t h = 0, gh = 0;
Sym *sym;
if (p == head || p == RTLD_DEFAULT || p == RTLD_NEXT) {
- if (p == RTLD_NEXT) {
+ if (p == RTLD_DEFAULT) {
+ p = head;
+ } else if (p == RTLD_NEXT) {
for (p=head; p && (unsigned char *)ra-p->map>p->map_len; p=p->next);
if (!p) p=head;
+ p = p->next;
}
- struct symdef def = find_sym(p->next, s, 0);
+ struct symdef def = find_sym(p, s, 0);
if (!def.sym) goto failed;
+ if ((def.sym->st_info&0xf) == STT_TLS)
+ return __tls_get_addr((size_t []){def.dso->tls_id, def.sym->st_value});
return def.dso->base + def.sym->st_value;
}
if (p->ghashtab) {
h = sysv_hash(s);
sym = sysv_lookup(s, h, p);
}
+ if (sym && (sym->st_info&0xf) == STT_TLS)
+ return __tls_get_addr((size_t []){p->tls_id, sym->st_value});
if (sym && sym->st_value && (1<<(sym->st_info&0xf) & OK_TYPES))
return p->base + sym->st_value;
if (p->deps) for (i=0; p->deps[i]; i++) {
if (!h) h = sysv_hash(s);
sym = sysv_lookup(s, h, p->deps[i]);
}
+ if (sym && (sym->st_info&0xf) == STT_TLS)
+ return __tls_get_addr((size_t []){p->deps[i]->tls_id, sym->st_value});
if (sym && sym->st_value && (1<<(sym->st_info&0xf) & OK_TYPES))
return p->deps[i]->base + sym->st_value;
}
pthread_rwlock_unlock(&lock);
return res;
}
+
+int dl_iterate_phdr(int(*callback)(struct dl_phdr_info *info, size_t size, void *data), void *data)
+{
+ struct dso *current;
+ struct dl_phdr_info info;
+ int ret = 0;
+ for(current = head; current;) {
+ info.dlpi_addr = (uintptr_t)current->base;
+ info.dlpi_name = current->name;
+ info.dlpi_phdr = current->phdr;
+ info.dlpi_phnum = current->phnum;
+ info.dlpi_adds = gencnt;
+ info.dlpi_subs = 0;
+ info.dlpi_tls_modid = current->tls_id;
+ info.dlpi_tls_data = current->tls_image;
+
+ ret = (callback)(&info, sizeof (info), data);
+
+ if (ret != 0) break;
+
+ pthread_rwlock_rdlock(&lock);
+ current = current->next;
+ pthread_rwlock_unlock(&lock);
+ }
+ return ret;
+}
#else
void *dlopen(const char *file, int mode)
{