From fc77df5fed834dd1cffc8c58adb4a13a9b97f5cf Mon Sep 17 00:00:00 2001 From: Roy Li Date: Wed, 27 Aug 2025 11:24:53 +0800 Subject: [PATCH] add option to make users able to use fixed port number Upstream-Status: Submitted [https:\/\/sourceforge.net\/p\/rpcbind\/discussion\/716839\/thread\/32af721d\/] Signed-off-by: Li Wang Signed-off-by: Roy Li Signed-off-by: Yi Zhao Signed-off-by: Hongxu Jia --- man\/rpcbind.8 | 4 +++- src\/rpcb_svc_com.c | 17 +++++++++++++++++ src\/rpcbind.c | 8 ++++++-- 3 files changed, 26 insertions(+), 3 deletions(-) diff --git a\/man\/rpcbind.8 b\/man\/rpcbind.8 index 15b70f9..4a6ffbc 100644 --- a\/man\/rpcbind.8 +++ b\/man\/rpcbind.8 @@ -11,7 +11,7 @@ .Nd universal addresses to RPC program number mapper .Sh SYNOPSIS .Nm -.Op Fl adfhilsvw +.Op Fl adfhpilsvw .Sh DESCRIPTION The .Nm @@ -96,6 +96,8 @@ will automatically add and if IPv6 is enabled, .Li ::1 to the list. +.It Fl p +Bind for fixed UDP port number If no .Fl h option is specified, diff --git a\/src\/rpcb_svc_com.c b\/src\/rpcb_svc_com.c index 6d0d72d..2f10dac 100644 --- a\/src\/rpcb_svc_com.c +++ b\/src\/rpcb_svc_com.c @@ -49,6 +49,7 @@ #include #include #include +#include #include #include #include @@ -499,6 +500,7 @@ xdr_opaque_parms(XDR *xdrs, struct r_rmtcall_args *cap) static struct rmtcallfd_list *rmthead; static struct rmtcallfd_list *rmttail; +extern unsigned short fixed_port; int create_rmtcall_fd(struct netconfig *nconf) @@ -506,6 +508,8 @@ create_rmtcall_fd(struct netconfig *nconf) int fd; struct rmtcallfd_list *rmt; SVCXPRT *xprt; + struct __rpc_sockinfo si; + struct t_bind taddr; if ((fd = __rpc_nconf2fd(nconf)) == -1) { if (debugging) @@ -514,6 +518,19 @@ create_rmtcall_fd(struct netconfig *nconf) nconf->nc_device, errno); return (-1); } + + if (fixed_port) { + __rpc_fd2sockinfo(fd, &si); + memset(&taddr, 0, sizeof(taddr)); + taddr.addr.maxlen = taddr.addr.len = si.si_alen; + taddr.addr.buf = malloc(si.si_alen); + if (taddr.addr.buf == NULL) { + return -1; + } + *(unsigned short *)(&(taddr.addr.buf[0])) = si.si_af; + *(unsigned short *)(&(taddr.addr.buf[2])) = htons(fixed_port); + xprt = svc_tli_create(fd, nconf, &taddr, RPC_MAXDATASIZE, RPC_MAXDATASIZE); + } else xprt = svc_tli_create(fd, 0, (struct t_bind *) 0, 0, 0); if (xprt == NULL) { if (debugging) diff --git a\/src\/rpcbind.c b\/src\/rpcbind.c index 4212377..7e7f79d 100644 --- a\/src\/rpcbind.c +++ b\/src\/rpcbind.c @@ -112,6 +112,7 @@ int runasdaemon = 0; int insecure = 0; int oldstyle_local = 0; int verboselog = 0; +unsigned short fixed_port = 0; char **hosts = NULL; int nhosts = 0; @@ -963,7 +964,7 @@ parseargs(int argc, char *argv[]) { int c; oldstyle_local = 1; - while ((c = getopt(argc, argv, "adfh:ilsvw")) != -1) { + while ((c = getopt(argc, argv, "adfh:p:ilsvw")) != -1) { switch (c) { case 'a': doabort = 1; \/* when debugging, do an abort on *\/ @@ -981,6 +982,9 @@ parseargs(int argc, char *argv[]) if (hosts[nhosts - 1] == NULL) errx(1, "Out of memory"); break; + case 'p': + fixed_port = atoi(optarg); + break; case 'i': insecure = 1; break; @@ -1003,7 +1007,7 @@ parseargs(int argc, char *argv[]) break; #endif default: \/* error *\/ - fprintf(stderr, "usage: rpcbind [-adfhilsvw]\n"); + fprintf(stderr, "usage: rpcbind [-adfhpilsvw]\n"); exit (1); } }

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