diff options
Diffstat (limited to 'mdk-stage1/dietlibc/librpc/bindresvport.c')
-rw-r--r-- | mdk-stage1/dietlibc/librpc/bindresvport.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/librpc/bindresvport.c b/mdk-stage1/dietlibc/librpc/bindresvport.c new file mode 100644 index 000000000..8b65261dd --- /dev/null +++ b/mdk-stage1/dietlibc/librpc/bindresvport.c @@ -0,0 +1,79 @@ +/* + * Sun RPC is a product of Sun Microsystems, Inc. and is provided for + * unrestricted use provided that this legend is included on all tape + * media and as a part of the software program in whole or part. Users + * may copy or modify Sun RPC without charge, but are not authorized + * to license or distribute it to anyone else except as part of a product or + * program developed by the user. + * + * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE + * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR + * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. + * + * Sun RPC is provided with no support and without any obligation on the + * part of Sun Microsystems, Inc. to assist in its use, correction, + * modification or enhancement. + * + * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE + * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC + * OR ANY PART THEREOF. + * + * In no event will Sun Microsystems, Inc. be liable for any lost revenue + * or profits or other special, indirect and consequential damages, even if + * Sun has been advised of the possibility of such damages. + * + * Sun Microsystems, Inc. + * 2550 Garcia Avenue + * Mountain View, California 94043 + */ + +/* + * Copyright (c) 1987 by Sun Microsystems, Inc. + */ + +#include <unistd.h> +#include <string.h> +#include <sys/types.h> +#include <errno.h> +#include <sys/socket.h> +#include <netinet/in.h> + +/* + * Bind a socket to a privileged IP port + */ +int bindresvport(sd, sin) +int sd; +struct sockaddr_in *sin; +{ + int res; + static short port; + struct sockaddr_in myaddr; + extern int errno; + int i; + +#define STARTPORT 600 +#define ENDPORT (IPPORT_RESERVED - 1) +#define NPORTS (ENDPORT - STARTPORT + 1) + + if (sin == (struct sockaddr_in *) 0) { + sin = &myaddr; + bzero(sin, sizeof(*sin)); + sin->sin_family = AF_INET; + } else if (sin->sin_family != AF_INET) { + errno = EPFNOSUPPORT; + return (-1); + } + if (port == 0) { + port = (getpid() % NPORTS) + STARTPORT; + } + res = -1; + errno = EADDRINUSE; + for (i = 0; i < NPORTS && res < 0 && errno == EADDRINUSE; i++) { + sin->sin_port = htons(port++); + if (port > ENDPORT) { + port = STARTPORT; + } + res = bind(sd, (struct sockaddr*)sin, sizeof(struct sockaddr_in)); + } + return (res); +} |