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| author | Florian Weimer <fweimer@redhat.com> | 2022-10-27 11:36:44 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2022-10-27 11:36:44 +0200 |
| commit | a65ff76c9a1811dd2396ab45563f645579c0e687 (patch) | |
| tree | 2b0dc70922fa0fc9f2c472145ecece35e7bb85aa | |
| parent | 77db67c56b24bba3c735aac34a6f796c909b68c0 (diff) | |
| download | glibc-a65ff76c9a1811dd2396ab45563f645579c0e687.zip glibc-a65ff76c9a1811dd2396ab45563f645579c0e687.tar.gz glibc-a65ff76c9a1811dd2396ab45563f645579c0e687.tar.bz2 | |
ld.so: Export tls_init_tp_called as __rtld_tls_init_tp_called
This allows the rest of dynamic loader to check whether the TCB
has been set up (and THREAD_GETMEM and THREAD_SETMEM will work).
Reviewed-by: Siddhesh Poyarekar <siddhesh@gotplt.org>
| -rw-r--r-- | elf/rtld.c | 10 | ||||
| -rw-r--r-- | sysdeps/generic/ldsodefs.h | 3 |
2 files changed, 8 insertions, 5 deletions
@@ -730,7 +730,7 @@ match_version (const char *string, struct link_map *map) return 0; } -static bool tls_init_tp_called; +bool __rtld_tls_init_tp_called; static void * init_tls (size_t naudit) @@ -800,7 +800,7 @@ cannot allocate TLS data structures for initial thread\n"); if (__glibc_unlikely (lossage != NULL)) _dl_fatal_printf ("cannot set up thread-local storage: %s\n", lossage); __tls_init_tp (); - tls_init_tp_called = true; + __rtld_tls_init_tp_called = true; return tcbp; } @@ -2050,7 +2050,7 @@ dl_main (const ElfW(Phdr) *phdr, an old kernel that can't perform TLS_INIT_TP, even if no TLS is ever used. Trying to do it lazily is too hairy to try when there could be multiple threads (from a non-TLS-using libpthread). */ - bool was_tls_init_tp_called = tls_init_tp_called; + bool was_tls_init_tp_called = __rtld_tls_init_tp_called; if (tcbp == NULL) tcbp = init_tls (0); @@ -2321,7 +2321,7 @@ dl_main (const ElfW(Phdr) *phdr, consider_profiling); /* Add object to slot information data if necessasy. */ - if (l->l_tls_blocksize != 0 && tls_init_tp_called) + if (l->l_tls_blocksize != 0 && __rtld_tls_init_tp_called) _dl_add_to_slotinfo (l, true); } } @@ -2347,7 +2347,7 @@ dl_main (const ElfW(Phdr) *phdr, _dl_allocate_tls_init (tcbp, false); /* And finally install it for the main thread. */ - if (! tls_init_tp_called) + if (! __rtld_tls_init_tp_called) { const char *lossage = TLS_INIT_TP (tcbp); if (__glibc_unlikely (lossage != NULL)) diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index 6b256b8..0223aa9 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -1219,6 +1219,9 @@ extern void *_dl_allocate_tls_storage (void) attribute_hidden; extern void *_dl_allocate_tls_init (void *, bool); rtld_hidden_proto (_dl_allocate_tls_init) +/* True if the TCB has been set up. */ +extern bool __rtld_tls_init_tp_called attribute_hidden; + /* Deallocate memory allocated with _dl_allocate_tls. */ extern void _dl_deallocate_tls (void *tcb, bool dealloc_tcb); rtld_hidden_proto (_dl_deallocate_tls) |