Author: oshogbo
Date: Sat Oct 28 19:23:57 2017
New Revision: 325062
URL: https://svnweb.freebsd.org/changeset/base/325062

Log:
  Introduce caspermocks.
  
  The idea behinds mocks is that we don't need to ifdef a lot of code in
  tools itself but those defines are hidden in the casper library.
  Right now the mocks are implemented as define/inlines functions.
  There was a very long discussion how this should be implemented.
  This approach has some advantages like we don't need to link to any additional
  libraries. Unfortunately there are also some disadvantages for example it is
  easy to get library out of sync between two versions of functions or that we
  need extra define to compile program with casper support.
  This isn't an ideal solution but it's good enough for now and should simplify
  capsicumizing programs. This also doesn't close us any other ways to do those
  mocks and this should evolve in time.
  
  Discussed with:       pjd, emaste, ed, rwatson, bapt, cem, bdrewery
  Differential Revision:    https://reviews.freebsd.org/D8753

Modified:
  head/lib/Makefile
  head/lib/libcasper/Makefile.inc
  head/lib/libcasper/libcasper/Makefile
  head/lib/libcasper/libcasper/libcasper.h
  head/lib/libcasper/services/Makefile
  head/lib/libcasper/services/cap_dns/Makefile
  head/lib/libcasper/services/cap_dns/cap_dns.h
  head/lib/libcasper/services/cap_dns/tests/Makefile
  head/lib/libcasper/services/cap_dns/tests/dns_test.c
  head/lib/libcasper/services/cap_grp/Makefile
  head/lib/libcasper/services/cap_grp/cap_grp.h
  head/lib/libcasper/services/cap_grp/tests/Makefile
  head/lib/libcasper/services/cap_grp/tests/grp_test.c
  head/lib/libcasper/services/cap_pwd/Makefile
  head/lib/libcasper/services/cap_pwd/cap_pwd.h
  head/lib/libcasper/services/cap_pwd/tests/Makefile
  head/lib/libcasper/services/cap_pwd/tests/pwd_test.c
  head/lib/libcasper/services/cap_random/Makefile
  head/lib/libcasper/services/cap_random/cap_random.h
  head/lib/libcasper/services/cap_sysctl/Makefile
  head/lib/libcasper/services/cap_sysctl/cap_sysctl.h
  head/lib/libcasper/services/cap_sysctl/tests/Makefile

Modified: head/lib/Makefile
==============================================================================
--- head/lib/Makefile   Sat Oct 28 19:08:06 2017        (r325061)
+++ head/lib/Makefile   Sat Oct 28 19:23:57 2017        (r325062)
@@ -35,6 +35,7 @@ SUBDIR=       ${SUBDIR_BOOTSTRAP} \
        libcalendar \
        libcam \
        libcapsicum \
+       libcasper \
        libcompat \
        libcrypt \
        libdevctl \
@@ -127,7 +128,6 @@ SUBDIR.${MK_ATM}+=  libngatm
 SUBDIR.${MK_BLACKLIST}+=libblacklist
 SUBDIR.${MK_BLUETOOTH}+=libbluetooth libsdp
 SUBDIR.${MK_BSNMP}+=   libbsnmp
-SUBDIR.${MK_CASPER}+=  libcasper
 
 .if !defined(COMPAT_32BIT) && !defined(COMPAT_SOFTFP)
 SUBDIR.${MK_CLANG}+=   clang

Modified: head/lib/libcasper/Makefile.inc
==============================================================================
--- head/lib/libcasper/Makefile.inc     Sat Oct 28 19:08:06 2017        
(r325061)
+++ head/lib/libcasper/Makefile.inc     Sat Oct 28 19:23:57 2017        
(r325062)
@@ -1,3 +1,9 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
+.if ${MK_CASPER} != "no"
+CFLAGS+=-DWITH_CASPER
+.endif
+
 .include "../Makefile.inc"

Modified: head/lib/libcasper/libcasper/Makefile
==============================================================================
--- head/lib/libcasper/libcasper/Makefile       Sat Oct 28 19:08:06 2017        
(r325061)
+++ head/lib/libcasper/libcasper/Makefile       Sat Oct 28 19:23:57 2017        
(r325062)
@@ -1,16 +1,21 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 PACKAGE=${LIB}
-LIB=   casper
 
 SHLIB_MAJOR=   0
 SHLIBDIR?=     /lib
 
+.if ${MK_CASPER} != "no"
+LIB=   casper
+
 SRCS=  libcasper.c
 SRCS+= libcasper_impl.c
 SRCS+= libcasper_service.c
 SRCS+= service.c
 SRCS+= zygote.c
+.endif
 
 INCS=  libcasper.h
 INCS+= libcasper_service.h

Modified: head/lib/libcasper/libcasper/libcasper.h
==============================================================================
--- head/lib/libcasper/libcasper/libcasper.h    Sat Oct 28 19:08:06 2017        
(r325061)
+++ head/lib/libcasper/libcasper/libcasper.h    Sat Oct 28 19:23:57 2017        
(r325062)
@@ -1,6 +1,6 @@
 /*-
  * Copyright (c) 2012-2013 The FreeBSD Foundation
- * Copyright (c) 2015 Mariusz Zaborski <osho...@freebsd.org>
+ * Copyright (c) 2015-2017 Mariusz Zaborski <osho...@freebsd.org>
  * All rights reserved.
  *
  * This software was developed by Pawel Jakub Dawidek under sponsorship from
@@ -33,8 +33,16 @@
 #ifndef        _LIBCASPER_H_
 #define        _LIBCASPER_H_
 
+#ifdef HAVE_CASPER
+#define WITH_CASPER
+#endif
+
 #include <sys/types.h>
+#include <sys/nv.h>
 
+#include <stdlib.h>
+#include <unistd.h>
+
 #ifndef        _NVLIST_T_DECLARED
 #define        _NVLIST_T_DECLARED
 struct nvlist;
@@ -44,72 +52,191 @@ typedef struct nvlist nvlist_t;
 
 #ifndef        _CAP_CHANNEL_T_DECLARED
 #define        _CAP_CHANNEL_T_DECLARED
+#ifdef WITH_CASPER
 struct cap_channel;
 
 typedef struct cap_channel cap_channel_t;
-#endif
+#else
+struct cap_channel {
+       int cch_fd;
+};
+typedef struct cap_channel cap_channel_t;
+#endif /* ! WITH_CASPER */
+#endif /* ! _CAP_CHANNEL_T_DECLARED */
 
 /*
  * The functions opens unrestricted communication channel to Casper.
  */
+#ifdef WITH_CASPER
 cap_channel_t *cap_init(void);
+#else
+static inline cap_channel_t *
+cap_init(void)
+{
+       cap_channel_t *chan;
 
+       chan = malloc(sizeof(*chan));
+       if (chan != NULL) {
+               chan->cch_fd = -1;
+       }
+       return (chan);
+}
+#endif
+
 /*
  * The functions to communicate with service.
  */
+#ifdef WITH_CASPER
 cap_channel_t  *cap_service_open(const cap_channel_t *chan, const char *name);
 int             cap_service_limit(const cap_channel_t *chan,
                    const char * const *names, size_t nnames);
+#else
+#define        cap_service_open(chan, name)            (cap_init())
+#define        cap_service_limit(chan, names, nnames)  (0)
+#endif
 
 /*
  * The function creates cap_channel_t based on the given socket.
  */
+#ifdef WITH_CASPER
 cap_channel_t *cap_wrap(int sock);
+#else
+static inline cap_channel_t *
+cap_wrap(int sock)
+{
+       cap_channel_t *chan;
 
+       chan = cap_init();
+       if (chan != NULL) {
+               chan->cch_fd = sock;
+       }
+       return (chan);
+}
+#endif
+
 /*
  * The function returns communication socket and frees cap_channel_t.
  */
+#ifdef WITH_CASPER
 int    cap_unwrap(cap_channel_t *chan);
+#else
+#define        cap_unwrap(chan)        (chan->cch_fd)
+#endif
 
 /*
  * The function clones the given capability.
  */
+#ifdef WITH_CASPER
 cap_channel_t *cap_clone(const cap_channel_t *chan);
+#else
+static inline cap_channel_t *
+cap_clone(const cap_channel_t *chan)
+{
+       cap_channel_t *newchan;
 
+       newchan = cap_init();
+       if (newchan == NULL) {
+               return (NULL);
+       }
+
+       if (chan->cch_fd == -1) {
+               newchan->cch_fd = -1;
+       } else {
+               newchan->cch_fd = dup(chan->cch_fd);
+               if (newchan->cch_fd < 0) {
+                       free(newchan);
+                       newchan = NULL;
+               }
+       }
+
+       return (newchan);
+}
+#endif
+
 /*
  * The function closes the given capability.
  */
+#ifdef WITH_CASPER
 void   cap_close(cap_channel_t *chan);
+#else
+static inline void
+cap_close(cap_channel_t *chan)
+{
 
+       if (chan->cch_fd >= 0) {
+               close(chan->cch_fd);
+       }
+       free(chan);
+}
+#endif
+
 /*
  * The function returns socket descriptor associated with the given
  * cap_channel_t for use with select(2)/kqueue(2)/etc.
  */
+#ifdef WITH_CASPER
 int    cap_sock(const cap_channel_t *chan);
+#else
+#define        cap_sock(chan)  (chan->cch_fd)
+#endif
 
 /*
  * The function limits the given capability.
  * It always destroys 'limits' on return.
  */
+#ifdef WITH_CASPER
 int    cap_limit_set(const cap_channel_t *chan, nvlist_t *limits);
+#else
+#define        cap_limit_set(chan, limits)     (0)
+#endif
 
 /*
  * The function returns current limits of the given capability.
  */
+#ifdef WITH_CASPER
 int    cap_limit_get(const cap_channel_t *chan, nvlist_t **limitsp);
+#else
+static inline int
+cap_limit_get(const cap_channel_t *chan __unused, nvlist_t **limitsp)
+{
 
+       *limitsp = nvlist_create(0);
+       return (0);
+}
+#endif
+
 /*
  * Function sends nvlist over the given capability.
  */
+#ifdef WITH_CASPER
 int    cap_send_nvlist(const cap_channel_t *chan, const nvlist_t *nvl);
+#else
+#define        cap_send_nvlist(chan, nvl)      (0)
+#endif
+
 /*
  * Function receives nvlist over the given capability.
  */
+#ifdef WITH_CASPER
 nvlist_t *cap_recv_nvlist(const cap_channel_t *chan, int flags);
+#else
+#define        cap_recv_nvlist(chan, flags)    (0)
+#endif
+
 /*
  * Function sends the given nvlist, destroys it and receives new nvlist in
  * response over the given capability.
  */
+#ifdef WITH_CASPER
 nvlist_t *cap_xfer_nvlist(const cap_channel_t *chan, nvlist_t *nvl, int flags);
+#else
+static inline nvlist_t *
+cap_xfer_nvlist(const cap_channel_t *chan __unused, nvlist_t *nvl, int flags)
+{
+
+       nvlist_destroy(nvl);
+       return (nvlist_create(flags));
+}
+#endif
 
 #endif /* !_LIBCASPER_H_ */

Modified: head/lib/libcasper/services/Makefile
==============================================================================
--- head/lib/libcasper/services/Makefile        Sat Oct 28 19:08:06 2017        
(r325061)
+++ head/lib/libcasper/services/Makefile        Sat Oct 28 19:23:57 2017        
(r325062)
@@ -1,5 +1,7 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 SUBDIR=                cap_dns
 SUBDIR+=       cap_grp
 SUBDIR+=       cap_pwd

Modified: head/lib/libcasper/services/cap_dns/Makefile
==============================================================================
--- head/lib/libcasper/services/cap_dns/Makefile        Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_dns/Makefile        Sat Oct 28 19:23:57 
2017        (r325062)
@@ -5,12 +5,15 @@ SHLIBDIR?=    /lib/casper
 .include <src.opts.mk>
 
 PACKAGE=libcasper
-LIB=   cap_dns
 
 SHLIB_MAJOR=   0
 INCSDIR?=      ${INCLUDEDIR}/casper
 
+.if ${MK_CASPER} != "no"
+LIB=   cap_dns
+
 SRCS=  cap_dns.c
+.endif
 
 INCS=  cap_dns.h
 

Modified: head/lib/libcasper/services/cap_dns/cap_dns.h
==============================================================================
--- head/lib/libcasper/services/cap_dns/cap_dns.h       Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_dns/cap_dns.h       Sat Oct 28 19:23:57 
2017        (r325062)
@@ -32,11 +32,16 @@
 #ifndef        _CAP_DNS_H_
 #define        _CAP_DNS_H_
 
+#ifdef HAVE_CASPER
+#define WITH_CASPER
+#endif
+
 #include <sys/socket.h>        /* socklen_t */
 
 struct addrinfo;
 struct hostent;
 
+#ifdef WITH_CASPER
 struct hostent *cap_gethostbyname(cap_channel_t *chan, const char *name);
 struct hostent *cap_gethostbyname2(cap_channel_t *chan, const char *name,
     int type);
@@ -53,5 +58,18 @@ int cap_dns_type_limit(cap_channel_t *chan, const char
     size_t ntypes);
 int cap_dns_family_limit(cap_channel_t *chan, const int *families,
     size_t nfamilies);
+#else
+#define        cap_gethostbyname(chan, name)            gethostbyname(name)
+#define cap_gethostbyname2(chan, name, type)    gethostbyname2(name, type)
+#define cap_gethostbyaddr(chan, addr, len, type) gethostbyaddr(addr, len, type)
+
+#define        cap_getaddrinfo(chan, hostname, servname, hints, res)           
        \
+       getaddrinfo(hostname, servname, hints, res)
+#define        cap_getnameinfo(chan, sa, salen, host, hostlen, serv, servlen, 
flags)   \
+       getnameinfo(sa, salen, host, hostlen, serv, servlen, flags)
+
+#define        cap_dns_type_limit(chan, types, ntypes)         (0)
+#define cap_dns_family_limit(chan, families, nfamilies)        (0)
+#endif
 
 #endif /* !_CAP_DNS_H_ */

Modified: head/lib/libcasper/services/cap_dns/tests/Makefile
==============================================================================
--- head/lib/libcasper/services/cap_dns/tests/Makefile  Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_dns/tests/Makefile  Sat Oct 28 19:23:57 
2017        (r325062)
@@ -1,9 +1,13 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 TAP_TESTS_C=   dns_test
 
+.if ${MK_CASPER} != "no"
 LIBADD+=       casper
 LIBADD+=       cap_dns
+.endif
 LIBADD+=       nv
 
 WARNS?=                3

Modified: head/lib/libcasper/services/cap_dns/tests/dns_test.c
==============================================================================
--- head/lib/libcasper/services/cap_dns/tests/dns_test.c        Sat Oct 28 
19:08:06 2017        (r325061)
+++ head/lib/libcasper/services/cap_dns/tests/dns_test.c        Sat Oct 28 
19:23:57 2017        (r325062)
@@ -31,6 +31,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/capsicum.h>
+#include <sys/nv.h>
 
 #include <arpa/inet.h>
 #include <netinet/in.h>

Modified: head/lib/libcasper/services/cap_grp/Makefile
==============================================================================
--- head/lib/libcasper/services/cap_grp/Makefile        Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_grp/Makefile        Sat Oct 28 19:23:57 
2017        (r325062)
@@ -5,12 +5,15 @@ SHLIBDIR?=    /lib/casper
 .include <src.opts.mk>
 
 PACKAGE=libcasper
-LIB=   cap_grp
 
 SHLIB_MAJOR=   0
 INCSDIR?=      ${INCLUDEDIR}/casper
 
+.if ${MK_CASPER} != "no"
+LIB=   cap_grp
+
 SRCS=  cap_grp.c
+.endif
 
 INCS=  cap_grp.h
 

Modified: head/lib/libcasper/services/cap_grp/cap_grp.h
==============================================================================
--- head/lib/libcasper/services/cap_grp/cap_grp.h       Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_grp/cap_grp.h       Sat Oct 28 19:23:57 
2017        (r325062)
@@ -32,6 +32,11 @@
 #ifndef        _CAP_GRP_H_
 #define        _CAP_GRP_H_
 
+#ifdef HAVE_CASPER
+#define WITH_CASPER
+#endif
+
+#ifdef WITH_CASPER
 struct group *cap_getgrent(cap_channel_t *chan);
 struct group *cap_getgrnam(cap_channel_t *chan, const char *name);
 struct group *cap_getgrgid(cap_channel_t *chan, gid_t gid);
@@ -53,5 +58,32 @@ int cap_grp_limit_fields(cap_channel_t *chan, const ch
     size_t nfields);
 int cap_grp_limit_groups(cap_channel_t *chan, const char * const *names,
     size_t nnames, gid_t *gids, size_t ngids);
+#else
+#define        cap_getgrent(chan)              getgrent()
+#define        cap_getgrnam(chan, name)        getgrnam(name)
+#define        cap_getgrgid(chan, gid)         getgrgid(gid)
+
+#define        cap_setgroupent(chan, stayopen) etgroupent(stayopen)
+#define endgrent(chan)                 endgrent()
+inline int
+cap_setgrent(cap_channel_t *chan __unused)
+{
+
+       setgrent();
+       return(0);
+}
+
+#define        cap_getgrent_r(chan, grp, buffer, bufsize, result)              
        \
+       getgrent_r(grp, buffer, bufsize, result)
+#define        cap_getgrnam_r(chan, name, grp, buffer, bufsize, result)        
        \
+       getgrnam_r(name, grp, buffer, bufsize, result)
+#define        cap_getgrgid_r(chan, gid, grp, buffer, bufsize, result)         
        \
+       getgrgid_r(gid, grp, buffer, bufsize, result)
+
+#define        cap_grp_limit_cmds(chan, cmds, ncmds)                   (0)
+#define        cap_grp_limit_fields(chan, fields, nfields)             (0)
+#define        cap_grp_limit_groups(chan, names, nnames, gids, ngids)  (0)
+
+#endif
 
 #endif /* !_CAP_GRP_H_ */

Modified: head/lib/libcasper/services/cap_grp/tests/Makefile
==============================================================================
--- head/lib/libcasper/services/cap_grp/tests/Makefile  Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_grp/tests/Makefile  Sat Oct 28 19:23:57 
2017        (r325062)
@@ -1,9 +1,13 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 TAP_TESTS_C=   grp_test
 
+.if ${MK_CASPER} != "no"
 LIBADD+=       casper
 LIBADD+=       cap_grp
+.endif
 LIBADD+=       nv
 
 WARNS?=                3

Modified: head/lib/libcasper/services/cap_grp/tests/grp_test.c
==============================================================================
--- head/lib/libcasper/services/cap_grp/tests/grp_test.c        Sat Oct 28 
19:08:06 2017        (r325061)
+++ head/lib/libcasper/services/cap_grp/tests/grp_test.c        Sat Oct 28 
19:23:57 2017        (r325062)
@@ -31,6 +31,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/capsicum.h>
+#include <sys/nv.h>
 
 #include <assert.h>
 #include <err.h>

Modified: head/lib/libcasper/services/cap_pwd/Makefile
==============================================================================
--- head/lib/libcasper/services/cap_pwd/Makefile        Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_pwd/Makefile        Sat Oct 28 19:23:57 
2017        (r325062)
@@ -5,12 +5,15 @@ SHLIBDIR?=    /lib/casper
 .include <src.opts.mk>
 
 PACKAGE=libcasper
-LIB=   cap_pwd
 
 SHLIB_MAJOR=   0
 INCSDIR?=      ${INCLUDEDIR}/casper
 
+.if ${MK_CASPER} != "no"
+LIB=   cap_pwd
+
 SRCS=  cap_pwd.c
+.endif
 
 INCS=  cap_pwd.h
 

Modified: head/lib/libcasper/services/cap_pwd/cap_pwd.h
==============================================================================
--- head/lib/libcasper/services/cap_pwd/cap_pwd.h       Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_pwd/cap_pwd.h       Sat Oct 28 19:23:57 
2017        (r325062)
@@ -32,6 +32,11 @@
 #ifndef        _CAP_PWD_H_
 #define        _CAP_PWD_H_
 
+#ifdef HAVE_CASPER
+#define WITH_CASPER
+#endif
+
+#ifdef WITH_CASPER
 struct passwd *cap_getpwent(cap_channel_t *chan);
 struct passwd *cap_getpwnam(cap_channel_t *chan, const char *login);
 struct passwd *cap_getpwuid(cap_channel_t *chan, uid_t uid);
@@ -53,5 +58,25 @@ int cap_pwd_limit_fields(cap_channel_t *chan, const ch
     size_t nfields);
 int cap_pwd_limit_users(cap_channel_t *chan, const char * const *names,
     size_t nnames, uid_t *uids, size_t nuids);
+#else
+#define        cap_getpwent(chan)              getpwent()
+#define        cap_getpwnam(chan, login)       getpwnam(login)
+#define        cap_getpwuid(chan, uid)         getpwuid(uid)
+
+#define        cap_getpwent_r(chan, pwd, buffer, bufsize, result)              
        \
+       getpwent_r(pwd, buffer, bufsize, result)
+#define        cap_getpwnam_r(chan, name, pwd, buffer, bufsize, result)        
        \
+       getpwnam_r(name, pwd, buffer, bufsize, result)
+#define        cap_getpwuid_r(chan, uid, pwd, buffer, bufsize, result)         
        \
+       getpwuid_r(uid, pwd, buffer, bufsize, result)
+
+#define        cap_setpassent(chan, stayopen)  setpassent(stayopen)
+#define        cap_setpwent(chan)              setpwent()
+#define        cap_endpwent(chan)              endpwent()
+
+#define        cap_pwd_limit_cmds(chan, cmds, ncmds)                   (0)
+#define cap_pwd_limit_fields(chan, fields, nfields)            (0)
+#define cap_pwd_limit_users(chan, names, nnames, uids, nuids)  (0)
+#endif
 
 #endif /* !_CAP_PWD_H_ */

Modified: head/lib/libcasper/services/cap_pwd/tests/Makefile
==============================================================================
--- head/lib/libcasper/services/cap_pwd/tests/Makefile  Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_pwd/tests/Makefile  Sat Oct 28 19:23:57 
2017        (r325062)
@@ -1,9 +1,13 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 TAP_TESTS_C=   pwd_test
 
+.if ${MK_CASPER} != "no"
 LIBADD+=       casper
 LIBADD+=       cap_pwd
+.endif
 LIBADD+=       nv
 
 WARNS?=                3

Modified: head/lib/libcasper/services/cap_pwd/tests/pwd_test.c
==============================================================================
--- head/lib/libcasper/services/cap_pwd/tests/pwd_test.c        Sat Oct 28 
19:08:06 2017        (r325061)
+++ head/lib/libcasper/services/cap_pwd/tests/pwd_test.c        Sat Oct 28 
19:23:57 2017        (r325062)
@@ -31,6 +31,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/capsicum.h>
+#include <sys/nv.h>
 
 #include <assert.h>
 #include <err.h>

Modified: head/lib/libcasper/services/cap_random/Makefile
==============================================================================
--- head/lib/libcasper/services/cap_random/Makefile     Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_random/Makefile     Sat Oct 28 19:23:57 
2017        (r325062)
@@ -1,13 +1,18 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 PACKAGE=libcasper
-LIB=   cap_random
 
 SHLIB_MAJOR=   0
 SHLIBDIR?=     /lib/casper
 INCSDIR?=      ${INCLUDEDIR}/casper
 
+.if ${MK_CASPER} != "no"
+LIB=   cap_random
+
 SRCS=  cap_random.c
+.endif
 
 INCS=  cap_random.h
 

Modified: head/lib/libcasper/services/cap_random/cap_random.h
==============================================================================
--- head/lib/libcasper/services/cap_random/cap_random.h Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_random/cap_random.h Sat Oct 28 19:23:57 
2017        (r325062)
@@ -32,6 +32,20 @@
 #ifndef        _CAP_RANDOM_H_
 #define        _CAP_RANDOM_H_
 
+#ifdef HAVE_CASPER
+#define WITH_CASPER
+#endif
+
+#ifdef WITH_CASPER
 int cap_random_buf(cap_channel_t *chan, void *buf, size_t nbytes);
+#else
+inline int
+cap_random_buf(cap_channel_t *chan, void *buf, size_t nbytes)
+{
+
+       arc4random_buf(buf, nbytes);
+       return(0);
+}
+#endif
 
 #endif /* !_CAP_RANDOM_H_ */

Modified: head/lib/libcasper/services/cap_sysctl/Makefile
==============================================================================
--- head/lib/libcasper/services/cap_sysctl/Makefile     Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_sysctl/Makefile     Sat Oct 28 19:23:57 
2017        (r325062)
@@ -5,12 +5,15 @@ SHLIBDIR?=    /lib/casper
 .include <src.opts.mk>
 
 PACKAGE=libcasper
-LIB=   cap_sysctl
 
 SHLIB_MAJOR=   0
 INCSDIR?=      ${INCLUDEDIR}/casper
 
+.if ${MK_CASPER} != "no"
+LIB=   cap_sysctl
+
 SRCS=  cap_sysctl.c
+.endif
 
 INCS=  cap_sysctl.h
 

Modified: head/lib/libcasper/services/cap_sysctl/cap_sysctl.h
==============================================================================
--- head/lib/libcasper/services/cap_sysctl/cap_sysctl.h Sat Oct 28 19:08:06 
2017        (r325061)
+++ head/lib/libcasper/services/cap_sysctl/cap_sysctl.h Sat Oct 28 19:23:57 
2017        (r325062)
@@ -32,12 +32,21 @@
 #ifndef        _CAP_SYSCTL_H_
 #define        _CAP_SYSCTL_H_
 
+#ifdef HAVE_CASPER
+#define WITH_CASPER
+#endif
+
 #define        CAP_SYSCTL_READ         0x01
 #define        CAP_SYSCTL_WRITE        0x02
 #define        CAP_SYSCTL_RDWR         (CAP_SYSCTL_READ | CAP_SYSCTL_WRITE)
 #define        CAP_SYSCTL_RECURSIVE    0x04
 
+#ifdef WITH_CASPER
 int cap_sysctlbyname(cap_channel_t *chan, const char *name, void *oldp,
     size_t *oldlenp, const void *newp, size_t newlen);
+#else
+#define        cap_sysctlbyname(chan, name, oldp, oldlenp, newp, newlen)       
        \
+       sysctlbyname(name, oldp, oldlenp, newp, newlen)
+#endif
 
 #endif /* !_CAP_SYSCTL_H_ */

Modified: head/lib/libcasper/services/cap_sysctl/tests/Makefile
==============================================================================
--- head/lib/libcasper/services/cap_sysctl/tests/Makefile       Sat Oct 28 
19:08:06 2017        (r325061)
+++ head/lib/libcasper/services/cap_sysctl/tests/Makefile       Sat Oct 28 
19:23:57 2017        (r325062)
@@ -1,9 +1,13 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 TAP_TESTS_C=   sysctl_test
 
+.if ${MK_CASPER} != "no"
 LIBADD+=       casper
 LIBADD+=       cap_sysctl
+.endif
 LIBADD+=       nv
 
 WARNS?=                3
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