diff options
Diffstat (limited to 'src/process/_Fork.c')
-rw-r--r-- | src/process/_Fork.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/process/_Fork.c b/src/process/_Fork.c new file mode 100644 index 00000000..9c07792d --- /dev/null +++ b/src/process/_Fork.c @@ -0,0 +1,43 @@ +#include <unistd.h> +#include <signal.h> +#include "syscall.h" +#include "libc.h" +#include "lock.h" +#include "pthread_impl.h" +#include "aio_impl.h" +#include "fork_impl.h" + +static void dummy(int x) { } +weak_alias(dummy, __aio_atfork); + +void __post_Fork(int ret) +{ + if (!ret) { + pthread_t self = __pthread_self(); + self->tid = __syscall(SYS_set_tid_address, &__thread_list_lock); + self->robust_list.off = 0; + self->robust_list.pending = 0; + self->next = self->prev = self; + __thread_list_lock = 0; + libc.threads_minus_1 = 0; + if (libc.need_locks) libc.need_locks = -1; + } + UNLOCK(__abort_lock); + if (!ret) __aio_atfork(1); +} + +pid_t _Fork(void) +{ + pid_t ret; + sigset_t set; + __block_all_sigs(&set); + LOCK(__abort_lock); +#ifdef SYS_fork + ret = __syscall(SYS_fork); +#else + ret = __syscall(SYS_clone, SIGCHLD, 0); +#endif + __post_Fork(ret); + __restore_sigs(&set); + return __syscall_ret(ret); +} |