diff -up smartmontools-5.38/configure.in.lowcap smartmontools-5.38/configure.in --- smartmontools-5.38/configure.in.lowcap 2009-10-05 15:33:00.231298546 +0200 +++ smartmontools-5.38/configure.in 2009-10-05 15:33:00.237483461 +0200 @@ -143,6 +143,40 @@ if test "$with_selinux" = "yes"; then AC_DEFINE(WITH_SELINUX, [1], [Define to 1 if SELinux support is enabled]) fi + AC_ARG_WITH(libcap-ng, + [ --with-libcap-ng=[auto/yes/no] Add Libcap-ng support [default=auto]],, + with_libcap_ng=auto) + +# Check for Libcap-ng API +# +# libcap-ng detection + +if test x$with_libcap_ng = xno ; then + have_libcap_ng=no; +else + # Start by checking for header file + AC_CHECK_HEADER(cap-ng.h, capng_headers=yes, capng_headers=no) + + # See if we have libcap-ng library + AC_CHECK_LIB(cap-ng, capng_clear, CAPNG_LDADD=-lcap-ng,) + + # Check results are usable + if test x$with_libcap_ng = xyes -a x$CAPNG_LDADD = x ; then + AC_MSG_ERROR(libcap-ng support was requested and the library was not found) + fi + if test x$CAPNG_LDADD != x -a $capng_headers = no ; then + AC_MSG_ERROR(libcap-ng libraries found but headers are missing) + fi +fi +AC_SUBST(CAPNG_LDADD) +AC_MSG_CHECKING(whether to use libcap-ng) +if test x$CAPNG_LDADD != x ; then + AC_DEFINE(HAVE_LIBCAP_NG,1,[libcap-ng support]) + AC_MSG_RESULT(yes) +else + AC_MSG_RESULT(no) +fi + if test "$prefix" = "NONE"; then dnl no prefix and no mandir, so use ${prefix}/share/man as default if test "$mandir" = '${prefix}/man'; then diff -up smartmontools-5.38/Makefile.am.lowcap smartmontools-5.38/Makefile.am --- smartmontools-5.38/Makefile.am.lowcap 2007-04-01 18:49:44.000000000 +0200 +++ smartmontools-5.38/Makefile.am 2009-10-05 15:33:00.238483296 +0200 @@ -35,7 +35,7 @@ smartd_SOURCES = smartd.cpp \ utility.cpp \ utility.h -smartd_LDADD = @os_deps@ @os_libs@ +smartd_LDADD = @os_deps@ @os_libs@ @CAPNG_LDADD@ smartd_DEPENDENCIES = @os_deps@ EXTRA_smartd_SOURCES = os_darwin.cpp \ diff -up smartmontools-5.38/smartd.8.in.lowcap smartmontools-5.38/smartd.8.in --- smartmontools-5.38/smartd.8.in.lowcap 2008-03-04 23:09:47.000000000 +0100 +++ smartmontools-5.38/smartd.8.in 2009-10-05 15:44:35.455113557 +0200 @@ -354,6 +354,12 @@ The default level is 1, so \'\-r ataioct equivalent. .TP +.B \-C, \-\-capabilities +Use possix \fBcapabilities(7)\fP (EXPERIMENTAL). + +Warning: Mail notification does not work when used. + +.TP .B \-\-service Cygwin and Windows only: Enables \fBsmartd\fP to run as a Windows service. diff -up smartmontools-5.38/smartd.cpp.lowcap smartmontools-5.38/smartd.cpp --- smartmontools-5.38/smartd.cpp.lowcap 2009-10-05 15:33:00.224483349 +0200 +++ smartmontools-5.38/smartd.cpp 2009-10-05 15:33:00.245483604 +0200 @@ -74,6 +74,10 @@ extern "C" int __stdcall FreeConsole(voi #include // setmode() #endif // __CYGWIN__ +#ifdef HAVE_LIBCAP_NG +#include +#endif //LIBCAP_NG + // locally included files #include "int64.h" #include "atacmds.h" @@ -179,6 +183,11 @@ static int facility=LOG_DAEMON; static bool do_fork=true; #endif +#ifdef HAVE_LIBCAP_NG +// enable possix capabilities +static bool enable_capabilities=false; +#endif + // used for control of printing, passing arguments to atacmds.c smartmonctrl *con=NULL; @@ -613,6 +622,15 @@ void MailWarning(cfgfile *cfg, int which if (epoch<(mail->lastsent+days)) return; } + +#ifdef HAVE_LIBCAP_NG + if (enable_capabilities) { + PrintOut(LOG_ERR,"Sending a mail was supressed. " + "Mails can't be send when capabilites are enabled\n"); + return; + } + +#endif // record the time of this mail message, and the first mail message if (!mail->logged) @@ -1239,6 +1257,11 @@ void Usage (void){ PrintOut(LOG_INFO," Quit on one of: %s\n\n", GetValidArgList('q')); PrintOut(LOG_INFO," -r, --report=TYPE\n"); PrintOut(LOG_INFO," Report transactions for one of: %s\n\n", GetValidArgList('r')); +#ifdef HAVE_LIBCAP_NG + PrintOut(LOG_INFO," -C, --usecapabilities\n"); + PrintOut(LOG_INFO," Use possix capabilities (EXPERIMENTAL).\n" + " Warning: Mail notification does not work when used.\n"); +#endif #ifdef _WIN32 PrintOut(LOG_INFO," --service\n"); PrintOut(LOG_INFO," Running as windows service (see man page), install with:\n"); @@ -1260,6 +1283,9 @@ void Usage (void){ PrintOut(LOG_INFO," -p NAME Write PID file NAME\n"); PrintOut(LOG_INFO," -q WHEN Quit on one of: %s\n", GetValidArgList('q')); PrintOut(LOG_INFO," -r TYPE Report transactions for one of: %s\n", GetValidArgList('r')); +#ifdef HAVE_LIBCAP_NG + PrintOut(LOG_INFO," -C Use possix capabilities (EXPERIMENTAL)\n"); +#endif PrintOut(LOG_INFO," -V Print License, Copyright, and version information\n"); #endif } @@ -3890,6 +3916,7 @@ void ParseOpts(int argc, char **argv){ { "copyright", no_argument, 0, 'V' }, { "help", no_argument, 0, 'h' }, { "usage", no_argument, 0, 'h' }, + { "usecapabilities",no_argument, 0, 'C' }, { 0, 0, 0, 0 } }; #endif @@ -4030,6 +4057,12 @@ void ParseOpts(int argc, char **argv){ PrintCopyleft(); EXIT(0); break; +#ifdef HAVE_LIBCAP_NG + case 'C': + //enable possix capabilities + enable_capabilities=1; + break; +#endif case 'h': // help: print summary of command-line options debugmode=1; @@ -4408,6 +4441,16 @@ static int smartd_main(int argc, char ** // don't exit on bad checksums con->checksumfail=0; + +#ifdef HAVE_LIBCAP_NG + // Drop capabilities + if (enable_capabilities) { + capng_clear(CAPNG_SELECT_BOTH); + capng_updatev(CAPNG_ADD, (capng_type_t)(CAPNG_EFFECTIVE|CAPNG_PERMITTED), + CAP_SYS_ADMIN, CAP_MKNOD, CAP_SYS_RAWIO, -1); + capng_apply(CAPNG_SELECT_BOTH); + } +#endif // the main loop of the code while (1){ @@ -4482,7 +4525,15 @@ static int smartd_main(int argc, char ** PrintTestSchedule(ATAandSCSIdevlist); EXIT(0); } - +#ifdef HAVE_LIBCAP_NG + for(int i=numdevata+numdevscsi; i>1; i--) { + if (ATAandSCSIdevlist[i-1]->mailwarn) { + PrintOut(LOG_WARNING,"Mail can't be enabled together with --usecapabilities. All mail will be suppressed.\n"); + break; + } + } + +#endif // reset signal caughtsigHUP=0; }