diff options
Diffstat (limited to 'lib/libc_r/uthread/uthread_fork.c')
| -rw-r--r-- | lib/libc_r/uthread/uthread_fork.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/libc_r/uthread/uthread_fork.c b/lib/libc_r/uthread/uthread_fork.c index 97039b3ef804..9fc17c6e4754 100644 --- a/lib/libc_r/uthread/uthread_fork.c +++ b/lib/libc_r/uthread/uthread_fork.c @@ -32,6 +32,7 @@ * $FreeBSD$ */ #include <errno.h> +#include <signal.h> #include <string.h> #include <stdlib.h> #include <unistd.h> @@ -108,7 +109,16 @@ _fork(void) else if (_pq_init(&_readyq) != 0) { /* Abort this application: */ PANIC("Cannot initialize priority ready queue."); - } else { + } else if ((_thread_sigstack.ss_sp == NULL) && + ((_thread_sigstack.ss_sp = malloc(SIGSTKSZ)) == NULL)) + PANIC("Unable to allocate alternate signal stack"); + else { + /* Install the alternate signal stack: */ + _thread_sigstack.ss_size = SIGSTKSZ; + _thread_sigstack.ss_flags = 0; + if (_thread_sys_sigaltstack(&_thread_sigstack, NULL) != 0) + PANIC("Unable to install alternate signal stack"); + /* * Enter a loop to remove all threads other than * the running thread from the thread list: |