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88677348b4
They are both used by __libc_freeres to free all library malloc allocated resources to help tooling like mtrace or valgrind with memory leak tracking. The current scheme uses assembly markers and linker script entries to consolidate the free routine function pointers in the RELRO segment and to be freed buffers in BSS. This patch changes it to use specific free functions for libc_freeres_ptrs buffers and call the function pointer array directly with call_function_static_weak. It allows the removal of both the internal macros and the linker script sections. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
134 lines
3.0 KiB
C
134 lines
3.0 KiB
C
#include <stdio.h>
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#include <rpc/rpc.h>
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#include <assert.h>
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#include <libc-lock.h>
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#include <libc-tsd.h>
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#include <shlib-compat.h>
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#include <libc-symbols.h>
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/* Variable used in non-threaded applications or for the first thread. */
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static struct rpc_thread_variables __libc_tsd_RPC_VARS_mem;
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static __thread struct rpc_thread_variables *thread_rpc_vars
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attribute_tls_model_ie;
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/*
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* Task-variable destructor
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*/
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void
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__rpc_thread_destroy (void)
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{
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struct rpc_thread_variables *tvp = thread_rpc_vars;
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if (tvp != NULL) {
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__rpc_thread_svc_cleanup ();
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__rpc_thread_clnt_cleanup ();
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__rpc_thread_key_cleanup ();
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free (tvp->clnt_perr_buf_s);
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free (tvp->clntraw_private_s);
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free (tvp->svcraw_private_s);
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free (tvp->authdes_cache_s);
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free (tvp->authdes_lru_s);
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free (tvp->svc_xports_s);
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free (tvp->svc_pollfd_s);
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if (tvp != &__libc_tsd_RPC_VARS_mem)
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free (tvp);
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thread_rpc_vars = NULL;
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}
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}
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/*
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* Initialize RPC multi-threaded operation
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*/
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static void
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rpc_thread_multi (void)
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{
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thread_rpc_vars = &__libc_tsd_RPC_VARS_mem;
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}
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struct rpc_thread_variables *
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__rpc_thread_variables (void)
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{
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__libc_once_define (static, once);
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struct rpc_thread_variables *tvp = thread_rpc_vars;
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if (tvp == NULL) {
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__libc_once (once, rpc_thread_multi);
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tvp = thread_rpc_vars;
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if (tvp == NULL) {
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tvp = calloc (1, sizeof *tvp);
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if (tvp != NULL)
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thread_rpc_vars = tvp;
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}
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}
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return tvp;
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}
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/* Global variables If we're single-threaded, or if this is the first
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thread using the variable, use the existing global variable. This
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provides backwards compatibility for existing applications which
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dynamically link against this code. */
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#undef svc_fdset
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#undef rpc_createerr
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#undef svc_pollfd
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#undef svc_max_pollfd
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fd_set *
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__rpc_thread_svc_fdset (void)
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{
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struct rpc_thread_variables *tvp;
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tvp = __rpc_thread_variables ();
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if (tvp == &__libc_tsd_RPC_VARS_mem)
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return &svc_fdset;
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return &tvp->svc_fdset_s;
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}
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libc_hidden_nolink_sunrpc (__rpc_thread_svc_fdset, GLIBC_2_2_3)
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struct rpc_createerr *
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__rpc_thread_createerr (void)
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{
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struct rpc_thread_variables *tvp;
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tvp = __rpc_thread_variables ();
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if (tvp == &__libc_tsd_RPC_VARS_mem)
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return &rpc_createerr;
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return &tvp->rpc_createerr_s;
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}
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libc_hidden_nolink_sunrpc (__rpc_thread_createerr, GLIBC_2_2_3)
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struct pollfd **
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__rpc_thread_svc_pollfd (void)
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{
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struct rpc_thread_variables *tvp;
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tvp = __rpc_thread_variables ();
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if (tvp == &__libc_tsd_RPC_VARS_mem)
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return &svc_pollfd;
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return &tvp->svc_pollfd_s;
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (__rpc_thread_svc_pollfd)
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#else
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libc_hidden_nolink_sunrpc (__rpc_thread_svc_pollfd, GLIBC_2_2_3)
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#endif
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int *
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__rpc_thread_svc_max_pollfd (void)
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{
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struct rpc_thread_variables *tvp;
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tvp = __rpc_thread_variables ();
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if (tvp == &__libc_tsd_RPC_VARS_mem)
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return &svc_max_pollfd;
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return &tvp->svc_max_pollfd_s;
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (__rpc_thread_svc_max_pollfd)
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#else
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libc_hidden_nolink_sunrpc (__rpc_thread_svc_max_pollfd, GLIBC_2_2_3)
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#endif
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