diff options
| -rw-r--r-- | shell/ash.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/shell/ash.c b/shell/ash.c index ac25866..13470b2 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -4453,15 +4453,28 @@ waitone(int block, struct job *job) static int dowait(int block, struct job *jp) { - int pid = block == DOWAIT_NONBLOCK ? got_sigchld : 1; + smallint gotchld = *(volatile smallint *)&got_sigchld; + int rpid; + int pid; + + if (jp && jp->state != JOBRUNNING) + block = DOWAIT_NONBLOCK; + + if (block == DOWAIT_NONBLOCK && !gotchld) + return 1; + + rpid = 1; - while (jp ? jp->state == JOBRUNNING : pid > 0) { - if (!jp) - got_sigchld = 0; + do { + got_sigchld = 0; pid = waitone(block, jp); - } + rpid &= !!pid; - return pid; + if (!pid || (jp && jp->state != JOBRUNNING)) + block = DOWAIT_NONBLOCK; + } while (pid >= 0); + + return rpid; } #if JOBS |