From 9d0b8b92a508c328e7eac774847f001f80dfb5ff Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Mon, 24 Aug 2020 21:38:49 -0400 Subject: make h_errno thread-local the framework to do this always existed but it was deemed unnecessary because the only [ex-]standard functions using h_errno were not thread-safe anyway. however, some of the nonstandard res_* functions are also supposed to set h_errno to indicate the cause of error, and were unable to do so because it was not thread-safe. this change is a prerequisite for fixing them. --- src/internal/pthread_impl.h | 1 + src/network/h_errno.c | 6 ++---- 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h index 5742dfc5..5749a336 100644 --- a/src/internal/pthread_impl.h +++ b/src/internal/pthread_impl.h @@ -43,6 +43,7 @@ struct pthread { long off; volatile void *volatile pending; } robust_list; + int h_errno_val; volatile int timer_id; locale_t locale; volatile int killlock[1]; diff --git a/src/network/h_errno.c b/src/network/h_errno.c index 4f700cea..8677a92b 100644 --- a/src/network/h_errno.c +++ b/src/network/h_errno.c @@ -1,9 +1,7 @@ #include - -#undef h_errno -int h_errno; +#include "pthread_impl.h" int *__h_errno_location(void) { - return &h_errno; + return &__pthread_self()->h_errno_val; } -- cgit v1.2.1