diff options
Diffstat (limited to 'lib/util/tfork.c')
| -rw-r--r-- | lib/util/tfork.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/util/tfork.c b/lib/util/tfork.c index cc2e0a05f4e..71f5e1b6ce9 100644 --- a/lib/util/tfork.c +++ b/lib/util/tfork.c @@ -670,7 +670,7 @@ static pid_t tfork_start_waiter_and_worker(struct tfork_state *state, } _exit(errno); } - if (nread != 0) { + if (nread != 1) { _exit(255); } @@ -838,7 +838,18 @@ int tfork_status(struct tfork **_t, bool wait) /* * This triggers process exit in the waiter. + * We write to the fd as well as closing it, as any tforked sibling + * processes will also have the writable end of this socket open. + * */ + { + size_t nwritten; + nwritten = sys_write(t->status_fd, &(char){0}, sizeof(char)); + if (nwritten != sizeof(char)) { + close(t->status_fd); + return -1; + } + } close(t->status_fd); do { |