diff options
| -rw-r--r-- | sys/src/ape/lib/ap/plan9/_buf.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/sys/src/ape/lib/ap/plan9/_buf.c b/sys/src/ape/lib/ap/plan9/_buf.c index 185095c8c..5cfa8d19d 100644 --- a/sys/src/ape/lib/ap/plan9/_buf.c +++ b/sys/src/ape/lib/ap/plan9/_buf.c @@ -54,14 +54,19 @@ _startbuf(int fd) Fdinfo *f; Muxbuf *b; void *v; + Muxseg *m; if(mux == 0){ - _RFORK(RFREND); - mux = (Muxseg*)_SEGATTACH(0, "shared", 0, sizeof(Muxseg)); - if(mux == (void*)-1){ + if(_RFORK(RFREND) == -1){ _syserrno(); return -1; } + m = (Muxseg*)_SEGATTACH(0, "shared", 0, sizeof(Muxseg)); + if(m == (void*)-1){ + _syserrno(); + return -1; + } + mux = m; /* segattach has returned zeroed memory */ atexit(_killmuxsid); } |