diff options
| author | Bill Paul <wpaul@FreeBSD.org> | 1995-11-05 05:39:04 +0000 |
|---|---|---|
| committer | Bill Paul <wpaul@FreeBSD.org> | 1995-11-05 05:39:04 +0000 |
| commit | 0f98415ed42fd2b5dd707221fd19037211138ded (patch) | |
| tree | f0c69a79e92e1b71594eefe682b639522e37d87a /lib/libc/yp/yplib.c | |
| parent | deb0ea412522f9964e3bb35e4a80d0d5871c6a8e (diff) | |
Notes
Diffstat (limited to 'lib/libc/yp/yplib.c')
| -rw-r--r-- | lib/libc/yp/yplib.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/lib/libc/yp/yplib.c b/lib/libc/yp/yplib.c index 3d9e2caeadc3..2765a9bd649b 100644 --- a/lib/libc/yp/yplib.c +++ b/lib/libc/yp/yplib.c @@ -28,7 +28,7 @@ */ #ifndef LINT -static char *rcsid = "$Id: yplib.c,v 1.11 1995/07/05 06:04:20 wpaul Exp $"; +static char *rcsid = "$Id: yplib.c,v 1.12 1995/09/02 04:16:21 wpaul Exp $"; #endif #include <sys/param.h> @@ -46,6 +46,10 @@ static char *rcsid = "$Id: yplib.c,v 1.11 1995/07/05 06:04:20 wpaul Exp $"; #include <rpcsvc/yp_prot.h> #include <rpcsvc/ypclnt.h> +#ifndef YPBINDLOCK +#define YPBINDLOCK "/var/run/ypbind.lock" +#endif + #ifndef BINDINGDIR #define BINDINGDIR "/var/yp/binding" #endif @@ -199,7 +203,7 @@ struct dom_binding **ypdb; struct ypbind_resp ypbr; struct timeval tv; struct sockaddr_in clnt_sin; - int clnt_sock, fd, gpid; + int clnt_sock, lfd, fd, gpid; CLIENT *client; int new = 0, r; int retries = 0; @@ -234,6 +238,21 @@ struct dom_binding **ypdb; ysd->dom_vers = 0; new = 1; } + + if ((lfd = open(YPBINDLOCK, O_RDONLY)) == -1) + return(YPERR_YPBIND); + errno = 0; + switch (flock(lfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) { + case 0: + close(lfd); + return (YPERR_YPBIND); + break; + case 1: + default: + close(lfd); + break; + } + again: retries++; if (retries > MAX_RETRIES) { @@ -865,7 +884,9 @@ char **dom; if(dom) *dom = _yp_domain; - if( yp_bind(_yp_domain)==0 ) + if( yp_bind(_yp_domain)==0 ) { + yp_unbind(_yp_domain); return 1; + } return 0; } |