diff options
| -rw-r--r-- | source4/libcli/resolve/host.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/source4/libcli/resolve/host.c b/source4/libcli/resolve/host.c index 1a695432ee..7d779b0678 100644 --- a/source4/libcli/resolve/host.c +++ b/source4/libcli/resolve/host.c @@ -53,10 +53,15 @@ struct host_state { */ static int host_destructor(struct host_state *state) { + int status; + + kill(state->child, SIGTERM); close(state->child_fd); - if (state->child != (pid_t)-1) { - kill(state->child, SIGTERM); + if (waitpid(state->child, &status, WNOHANG) == 0) { + kill(state->child, SIGKILL); + waitpid(state->child, &status, 0); } + return 0; } @@ -90,16 +95,23 @@ static void pipe_handler(struct event_context *ev, struct fd_event *fde, struct host_state *state = talloc_get_type(c->private_data, struct host_state); char address[128]; int ret; + pid_t child = state->child; + int status; /* if we get any event from the child then we know that we won't need to kill it off */ - state->child = (pid_t)-1; + talloc_set_destructor(state, NULL); /* yes, we don't care about EAGAIN or other niceities here. They just can't happen with this parent/child relationship, and even if they did then giving an error is the right thing to do */ ret = read(state->child_fd, address, sizeof(address)-1); + close(state->child_fd); + if (waitpid(state->child, &status, WNOHANG) == 0) { + kill(state->child, SIGKILL); + waitpid(state->child, &status, 0); + } if (ret <= 0) { composite_error(c, NT_STATUS_OBJECT_NAME_NOT_FOUND); return; @@ -164,10 +176,6 @@ struct composite_context *resolve_name_host_send(TALLOC_CTX *mem_ctx, return c; } - /* signal handling in posix really sucks - doing this in a library - affects the whole app, but what else to do?? */ - signal(SIGCHLD, SIG_IGN); - state->child = fork(); if (state->child == (pid_t)-1) { composite_error(c, map_nt_error_from_unix(errno)); |