portmap: add nommu support
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Mike Frysinger
Peter Korsgaard
parent
9bc58a42af
commit
758eff8852
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From af4a27a17bbdbe941f2462e116c2e4c8ade110e3 Mon Sep 17 00:00:00 2001
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From: Mike Frysinger <vapier@gentoo.org>
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Date: Fri, 19 Nov 2010 23:35:20 -0500
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Subject: [PATCH 1/4] README: fix typo in tcp wrapper doc
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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---
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README | 2 +-
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1 files changed, 1 insertions(+), 1 deletions(-)
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diff --git a/README b/README
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index 0da54cc..916de7e 100644
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--- a/README
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+++ b/README
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@@ -18,7 +18,7 @@ There is no "./configure", just use "make".
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Some make variable can be used to control compilation.
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- NO_TCP_WRAPPER= if non-empty, doen't use tcp_wrappers
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+ NO_TCP_WRAPPER= if non-empty, don't use tcp_wrappers
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USE_DNS= if set, tcp_wrappers can check peers based on hostname
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as well as IP address. This should only be used if you
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are certain that gethostbyname will never trigger a
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--
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1.7.3.1
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@ -0,0 +1,53 @@
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From 087874b15367a04fd482541d1832696d7163d1ac Mon Sep 17 00:00:00 2001
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From: Mike Frysinger <vapier@gentoo.org>
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Date: Fri, 19 Nov 2010 23:35:47 -0500
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Subject: [PATCH 2/4] NO_PIE: make PIE support controllable
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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---
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Makefile | 8 ++++++--
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README | 1 +
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2 files changed, 7 insertions(+), 2 deletions(-)
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diff --git a/Makefile b/Makefile
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index 5343428..cfcfdbb 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -106,6 +106,10 @@ CPPFLAGS += -DIGNORE_SIGCHLD # AIX 4.x, HP-UX 9.x
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#
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# LDLIBS += -m
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# CFLAGS += -arch m68k -arch i386 -arch hppa
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+ifeq ($(NO_PIE),)
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+CFLAGS_PIE = -fpie
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+LDFLAGS_PIE = -pie
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+endif
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# Auxiliary libraries that you may have to specify
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#
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@@ -125,9 +129,9 @@ CFLAGS += -Wall -Wstrict-prototypes
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all: portmap pmap_dump pmap_set portmap.man
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CPPFLAGS += $(HOSTS_ACCESS)
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-portmap: CFLAGS += -fpie
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+portmap: CFLAGS += $(CFLAGS_PIE)
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portmap: LDLIBS += $(WRAP_LIB)
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-portmap: LDFLAGS += -pie
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+portmap: LDFLAGS += $(LDFLAGS_PIE)
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portmap: portmap.o pmap_check.o from_local.o
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from_local: CPPFLAGS += -DTEST
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diff --git a/README b/README
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index 916de7e..e0b561a 100644
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--- a/README
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+++ b/README
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@@ -18,6 +18,7 @@ There is no "./configure", just use "make".
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Some make variable can be used to control compilation.
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+ NO_PIE= if non-empty, don't build portmap as a PIE
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NO_TCP_WRAPPER= if non-empty, don't use tcp_wrappers
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USE_DNS= if set, tcp_wrappers can check peers based on hostname
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as well as IP address. This should only be used if you
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--
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1.7.3.1
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@ -0,0 +1,95 @@
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From b3afea5757af1a7356ba30d2e0a7d5909ca18121 Mon Sep 17 00:00:00 2001
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From: Mike Frysinger <vapier@gentoo.org>
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Date: Fri, 19 Nov 2010 23:48:20 -0500
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Subject: [PATCH 3/4] NO_FORK: control usage of fork() for nommu systems
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nommu systems lack a fork() function, so add a NO_FORK flag to control
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its usage. We don't lose a ton of functionality in doing so, and on an
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embedded system, this is OK.
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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---
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Makefile | 5 +++++
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README | 1 +
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pmap_check.c | 6 ++++--
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portmap.c | 6 ++++++
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4 files changed, 16 insertions(+), 2 deletions(-)
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diff --git a/Makefile b/Makefile
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index cfcfdbb..9df5574 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -27,6 +27,11 @@ MAN_SED += -e 's/USE_DNS/yes/'
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endif
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endif
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+# For no-mmu systems, we have to disable the fork() functions.
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+ifneq ($(NO_FORK),)
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+CPPFLAGS += -DNO_FORK
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+endif
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+
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# Comment out if your RPC library does not allocate privileged ports for
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# requests from processes with root privilege, or the new portmap will
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# always reject requests to register/unregister services on privileged
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diff --git a/README b/README
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index e0b561a..bda1707 100644
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--- a/README
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+++ b/README
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@@ -18,6 +18,7 @@ There is no "./configure", just use "make".
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Some make variable can be used to control compilation.
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+ NO_FORK= if non-empty, don't use fork (good for nommu systems)
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NO_PIE= if non-empty, don't build portmap as a PIE
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NO_TCP_WRAPPER= if non-empty, don't use tcp_wrappers
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USE_DNS= if set, tcp_wrappers can check peers based on hostname
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diff --git a/pmap_check.c b/pmap_check.c
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index 6b3e490..983414e 100644
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--- a/pmap_check.c
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+++ b/pmap_check.c
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@@ -302,8 +302,10 @@ static void logit(int severity, struct sockaddr_in *addr,
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* getrpcbynumber() or syslog() does its thing.
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*/
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- if (fork() == 0) {
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-
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+#ifndef NO_FORK
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+ if (fork() == 0)
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+#endif
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+ {
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/* Try to map program number to name. */
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if (prognum == 0) {
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diff --git a/portmap.c b/portmap.c
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index 2a98881..94abc64 100644
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--- a/portmap.c
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+++ b/portmap.c
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@@ -753,6 +755,7 @@ static void callit(struct svc_req *rqstp, SVCXPRT *xprt)
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if ((pml = find_service(a.rmt_prog, a.rmt_vers,
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(u_long)IPPROTO_UDP)) == NULL)
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return;
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+#ifndef NO_FORK
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/*
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* fork a child to do the work. Parent immediately returns.
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* Child exits upon completion.
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@@ -763,6 +766,7 @@ static void callit(struct svc_req *rqstp, SVCXPRT *xprt)
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a.rmt_prog);
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return;
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}
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+#endif
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port = pml->pml_map.pm_port;
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get_myaddress(&me);
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me.sin_port = htons(port);
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@@ -783,7 +787,9 @@ static void callit(struct svc_req *rqstp, SVCXPRT *xprt)
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clnt_destroy(client);
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}
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(void)close(so);
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+#ifndef NO_FORK
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exit(0);
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+#endif
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}
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#ifndef IGNORE_SIGCHLD /* Lionel Cons <cons@dxcern.cern.ch> */
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--
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1.7.3.1
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@ -0,0 +1,65 @@
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From 8cea0778f0fb838a7bd764be08f15e1494e5a0b2 Mon Sep 17 00:00:00 2001
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From: Mike Frysinger <vapier@gentoo.org>
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Date: Fri, 19 Nov 2010 23:50:27 -0500
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Subject: [PATCH 4/4] NO_PERROR: control overriding of perror() symbol
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Doing static builds of portmap might fail when the C library's perror()
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function is pulled in and collides with portmap's definition. So add a
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flag to control the local override.
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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---
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Makefile | 5 +++++
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README | 1 +
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2 files changed, 6 insertions(+), 0 deletions(-)
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diff --git a/Makefile b/Makefile
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index 9df5574..1635107 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -32,6 +32,11 @@ ifneq ($(NO_FORK),)
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CPPFLAGS += -DNO_FORK
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endif
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+# For static builds, we might hit perror() symbol clashes
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+ifneq ($(NO_PERROR),)
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+CPPFLAGS += -DNO_PERROR
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+endif
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+
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# Comment out if your RPC library does not allocate privileged ports for
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# requests from processes with root privilege, or the new portmap will
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# always reject requests to register/unregister services on privileged
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diff --git a/README b/README
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index bda1707..05861a8 100644
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--- a/README
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+++ b/README
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@@ -19,6 +19,7 @@ There is no "./configure", just use "make".
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Some make variable can be used to control compilation.
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NO_FORK= if non-empty, don't use fork (good for nommu systems)
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+ NO_PERROR= if non-empty, don't override the perror() func
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NO_PIE= if non-empty, don't build portmap as a PIE
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NO_TCP_WRAPPER= if non-empty, don't use tcp_wrappers
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USE_DNS= if set, tcp_wrappers can check peers based on hostname
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diff --git a/portmap.c b/portmap.c
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index 2a98881..94abc64 100644
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--- a/portmap.c
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+++ b/portmap.c
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@@ -391,12 +391,14 @@ main(int argc, char **argv)
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abort();
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}
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+#ifndef NO_PERROR
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/* need to override perror calls in rpc library */
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void perror(const char *what)
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{
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syslog(LOG_ERR, "%s: %m", what);
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}
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+#endif
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static struct pmaplist *
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find_service(u_long prog, u_long vers, u_long prot)
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--
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1.7.3.1
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@ -9,8 +9,13 @@ PORTMAP_SOURCE = portmap-$(PORTMAP_VERSION).tgz
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PORTMAP_SITE = http://neil.brown.name/portmap
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PORTMAP_SBINS = portmap pmap_dump pmap_set
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PORTMAP_FLAGS = NO_TCP_WRAPPER=1 NO_PIE=1 NO_PERROR=1
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ifeq ($(BR2_USE_MMU),)
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PORTMAP_FLAGS += NO_FORK=1
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endif
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define PORTMAP_BUILD_CMDS
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$(MAKE) CC="$(TARGET_CC)" -C $(@D) NO_TCP_WRAPPER=1
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$(MAKE) CC="$(TARGET_CC)" -C $(@D) $(PORTMAP_FLAGS)
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endef
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define PORTMAP_INSTALL_TARGET_CMDS
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