Add NT quota support. Patch from Stefan (metze) Metzemacher

1. Allows to change quota settings for shared mount points from Win2K and WinXP from Explorer properties tab
2. Disabled by default and when requested, will be probed and enabled only on Linux where it works
3. Was tested for approx. two weeks now on Linux by two independent QA teams, have not found any bugs so far
Documentation to follow
(This used to be commit 4bf022ce9e45be85609426762ba2644ac2031326)

1 files changed, 253 insertions, 35 deletions

diff --git a/source3/configure.in b/source3/configure.in
index ba9b485df2..0f6a9fa27c 100644
--- a/source3/configure.in
+++ b/source3/configure.in
@@ -224,6 +224,30 @@ else
 fi
 AC_SUBST(BROKEN_CC)
 
+dnl Check if the C compiler understands -Werror
+AC_CACHE_CHECK([that the C compiler understands -Werror],samba_cv_HAVE_Werror, [
+ AC_TRY_RUN_STRICT([
+  int main(void)
+  {
+  	return 0;
+  }],[-Werror],[$CPPFLAGS],[$LDFLAGS],
+  samba_cv_HAVE_Werror=yes,samba_cv_HAVE_Werror=no,samba_cv_HAVE_Werror=cross)])
+if test x"$samba_cv_HAVE_Werror" = x"yes"; then
+   Werror_FLAGS="-Werror"
+else 
+dnl Check if the C compiler understands -w2
+AC_CACHE_CHECK([that the C compiler understands -w2],samba_cv_HAVE_w2, [
+ AC_TRY_RUN_STRICT([
+  int main(void)
+  {
+  	return 0;
+  }],[-w2],[$CPPFLAGS],[$LDFLAGS],
+  samba_cv_HAVE_w2=yes,samba_cv_HAVE_w2=no,samba_cv_HAVE_w2=cross)])
+if test x"$samba_cv_HAVE_w2" = x"yes"; then
+   Werror_FLAGS="-w2"
+fi
+fi
+
 dnl Check if the C compiler understands volatile (it should, being ANSI).
 AC_CACHE_CHECK([that the C compiler understands volatile],samba_cv_volatile, [
     AC_TRY_COMPILE([#include <sys/types.h>],[volatile int i = 0],
@@ -232,6 +256,21 @@ if test x"$samba_cv_volatile" = x"yes"; then
    AC_DEFINE(HAVE_VOLATILE, 1, [Whether the C compiler understands volatile])
 fi
 
+UNAME_S=`uname -s`
+AC_MSG_CHECKING(uname -s)
+AC_MSG_RESULT(${UNAME_S})
+
+UNAME_R=`uname -r`
+AC_MSG_CHECKING(uname -r)
+AC_MSG_RESULT(${UNAME_R})
+
+UNAME_M=`uname -m`
+AC_MSG_CHECKING(uname -m)
+AC_MSG_RESULT(${UNAME_M})
+
+UNAME_P=`uname -p`
+AC_MSG_CHECKING(uname -p)
+AC_MSG_RESULT(${UNAME_P})
 
 AC_CANONICAL_SYSTEM
 
@@ -517,13 +556,6 @@ AC_CHECK_HEADERS(sys/acl.h sys/cdefs.h glob.h)
 # For experimental utmp support (lastlog on some BSD-like systems)
 AC_CHECK_HEADERS(utmp.h utmpx.h lastlog.h)
  
-# For quotas on Veritas VxFS filesystems
-AC_CHECK_HEADERS(sys/fs/vx_quota.h)
-
-# For quotas on Linux XFS filesystems
-AC_CHECK_HEADERS(linux/xqm.h)
-AC_CHECK_HEADERS(xfs/xqm.h)
-
 AC_CHECK_SIZEOF(int,cross)
 AC_CHECK_SIZEOF(long,cross)
 AC_CHECK_SIZEOF(short,cross)
@@ -2525,44 +2557,230 @@ AC_ARG_WITH(profiling-data,
 
 #################################################
 # check for experimental disk-quotas support
-QUOTAOBJS=smbd/noquotas.o
 
-AC_MSG_CHECKING(whether to support disk-quotas)
+samba_cv_TRY_QUOTAS=no
+AC_MSG_CHECKING(whether to try disk-quotas support)
 AC_ARG_WITH(quotas,
-[  --with-quotas           Include experimental disk-quota support (default=no)],
+[  --with-quotas           Include disk-quota support (default=no)],
+[ case "$withval" in
+  no)
+    AC_MSG_RESULT(no)
+    samba_cv_TRY_QUOTAS=no
+    ;;
+  *)
+    AC_MSG_RESULT(yes)
+    ;;
+  esac ],
+  AC_MSG_RESULT(yes)
+)
+
+samba_cv_TRY_SYS_QUOTAS=auto
+AC_MSG_CHECKING(whether to try the new lib/sysquotas.c interface)
+AC_ARG_WITH(sys-quotas,
+[  --with-sys-quotas       Include lib/sysquotas.c support (default=auto)],
 [ case "$withval" in
   yes)
     AC_MSG_RESULT(yes)
-    case "$host_os" in
-      *linux*)
-        # Check for kernel 2.4.x quota braindamage...
-        AC_CACHE_CHECK([for linux 2.4.x quota braindamage..],samba_cv_linux_2_4_quota_braindamage, [
-        AC_TRY_COMPILE([#include <stdio.h>
-#include <sys/types.h>
-#include <asm/types.h>
-#include <linux/quota.h>
-#include <mntent.h>
-#include <linux/unistd.h>],[struct mem_dqblk D;],
-      samba_cv_linux_2_4_quota_braindamage=yes,samba_cv_linux_2_4_quota_braindamage=no)])
-if test x"$samba_cv_linux_2_4_quota_braindamage" = x"yes"; then
-        AC_DEFINE(LINUX_QUOTAS_2,1,[linux 2.4.x quota braindamage])
-else
-        AC_DEFINE(LINUX_QUOTAS_1,1,[linux quotas])
-fi
-        ;;
-      *)
-        ;;
-    esac
-    QUOTAOBJS=smbd/quotas.o
-    AC_DEFINE(WITH_QUOTAS,1,[Whether to include experimental quota support])
+    samba_cv_TRY_QUOTAS=yes
+    samba_cv_TRY_SYS_QUOTAS=yes
     ;;
-  *)
+  no)
     AC_MSG_RESULT(no)
+    samba_cv_TRY_SYS_QUOTAS=no
+    ;;
+  *)
+    AC_MSG_RESULT(auto)
     ;;
   esac ],
-  AC_MSG_RESULT(no)
+  AC_MSG_RESULT(auto)
 )
-AC_SUBST(QUOTAOBJS)
+
+if test x"$samba_cv_TRY_SYS_QUOTAS" = x"auto"; then
+AC_MSG_CHECKING(whether to try the lib/sysquotas.c interface on ${host_os})
+  case "$host_os" in
+	*linux*)
+	    AC_MSG_RESULT(yes)
+	    samba_cv_TRY_SYS_QUOTAS=yes
+	    ;;
+	*)
+	    AC_MSG_RESULT(no)
+	    samba_cv_TRY_SYS_QUOTAS=no
+	    ;;
+  esac
+fi
+
+#############################################
+# only check for quota stuff if --with-quotas
+if test x"$samba_cv_TRY_QUOTAS" = x"yes"; then
+
+# For quotas on Veritas VxFS filesystems
+AC_CHECK_HEADERS(sys/fs/vx_quota.h)
+
+# For sys/quota.h and linux/quota.h
+AC_CHECK_HEADERS(sys/quota.h)
+AC_CHECK_HEADERS(asm/types.h linux/quota.h)
+
+# For quotas on Linux XFS filesystems
+AC_CHECK_HEADERS(linux/xqm.h linux/xfs_fs.h)
+AC_CHECK_HEADERS(xfs/libxfs.h xfs/xqm.h xfs/xfs_fs.h)
+# For linux > 2.5.56 
+AC_CHECK_HEADERS(linux/dqblk_xfs.h)
+
+# if we have struct if_dqblk in <linux/quota.h> we should use it
+AC_CACHE_CHECK([for struct if_dqblk in <linux/quota.h>],samba_cv_HAVE_STRUCT_IF_DQBLK, [
+AC_TRY_COMPILE([
+#include "confdefs.h"
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_ASM_TYPES_H
+#include <asm/types.h>
+#endif
+#include <linux/quota.h>
+],[struct if_dqblk D;],
+samba_cv_HAVE_STRUCT_IF_DQBLK=yes,samba_cv_HAVE_STRUCT_IF_DQBLK=no)])
+if test "$samba_cv_HAVE_STRUCT_IF_DQBLK"x = "yes"x; then
+	AC_DEFINE(HAVE_STRUCT_IF_DQBLK,1,[struct if_dqblk])
+fi
+
+# if we have struct mem_dqblk in <linux/quota.h> we should use it
+AC_CACHE_CHECK([for struct mem_dqblk in <linux/quota.h>],samba_cv_HAVE_STRUCT_MEM_DQBLK, [
+AC_TRY_COMPILE([
+#include "confdefs.h"
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_ASM_TYPES_H
+#include <asm/types.h>
+#endif
+#include <linux/quota.h>
+],[struct mem_dqblk D;],
+samba_cv_HAVE_STRUCT_MEM_DQBLK=yes,samba_cv_HAVE_STRUCT_MEM_DQBLK=no)])
+if test "$samba_cv_HAVE_STRUCT_MEM_DQBLK"x = "yes"x; then
+	AC_DEFINE(HAVE_STRUCT_MEM_DQBLK,1,[struct mem_dqblk])
+fi
+
+# if we have struct dqblk .dqb_fsoftlimit instead of .dqb_isoftlimit on IRIX 
+AC_CACHE_CHECK([if struct dqblk has .dqb_fsoftlimit],samba_cv_HAVE_DQB_FSOFTLIMIT, [
+AC_TRY_COMPILE([
+#include "confdefs.h"
+#ifdef HAVE_SYS_QUOTA_H
+#include <sys/quota.h>
+#endif
+],[
+struct dqblk D;
+D.dqb_fsoftlimit = 0;],
+samba_cv_HAVE_DQB_FSOFTLIMIT=yes,samba_cv_HAVE_DQB_FSOFTLIMIT=no)])
+if test "$samba_cv_HAVE_DQB_FSOFTLIMIT"x = "yes"x; then
+	AC_DEFINE(HAVE_DQB_FSOFTLIMIT,1,[struct dqblk .dqb_fsoftlimit])
+fi
+
+##################
+# look for a working quota system
+samba_cv_SYSQUOTA_FOUND=no;
+
+if test x"$samba_cv_SYSQUOTA_FOUND" != x"yes"; then
+AC_CACHE_CHECK([for long quotactl(int cmd, char *special, qid_t id, caddr_t addr)],samba_cv_HAVE_QUOTACTL_4A,[
+AC_TRY_RUN_STRICT([
+#define HAVE_QUOTACTL_4A 1
+#define AUTOCONF_TEST 1
+#include "confdefs.h"
+#include "${srcdir-.}/lib/sysquotas.c"],[$Werror_FLAGS],[$CPPFLAGS],[$LDFLAGS],
+           samba_cv_HAVE_QUOTACTL_4A=yes,samba_cv_HAVE_QUOTACTL_4A=no,samba_cv_HAVE_QUOTACTL_4A=cross)])
+if test x"$samba_cv_HAVE_QUOTACTL_4A" = x"yes"; then
+    samba_cv_SYSQUOTA_FOUND=yes;AC_DEFINE(HAVE_QUOTACTL_4A,1,[Whether long quotactl(int cmd, char *special, qid_t id, caddr_t addr) is available])
+fi
+fi
+
+if test x"$samba_cv_SYSQUOTA_FOUND" != x"yes"; then
+AC_CACHE_CHECK([for int quotactl(const char *path, int cmd, int id, char *addr)],samba_cv_HAVE_QUOTACTL_4B,[
+AC_TRY_RUN_STRICT([
+#define HAVE_QUOTACTL_4B 1
+#define AUTOCONF_TEST 1
+#include "confdefs.h"
+#include "${srcdir-.}/lib/sysquotas.c"],[$Werror_FLAGS],[$CPPFLAGS],[$LDFLAGS],
+           samba_cv_HAVE_QUOTACTL_4B=yes,samba_cv_HAVE_QUOTACTL_4B=no,samba_cv_HAVE_QUOTACTL_4B=cross)])
+if test x"$samba_cv_HAVE_QUOTACTL_4B" = x"yes"; then
+    echo "int quotactl(const char *path, int cmd, int id, char *addr) is not reworked for the new sys_quota api"
+#    samba_cv_SYSQUOTA_FOUND=yes;AC_DEFINE(HAVE_QUOTACTL_4B,1,[Whether int quotactl(const char *path, int cmd, int id, char *addr) is available])
+fi
+fi
+
+if test x"$samba_cv_SYSQUOTA_FOUND" != x"yes"; then
+AC_CACHE_CHECK([for CRAY int quotactl (char *spec, int request, char *arg)],samba_cv_HAVE_QUOTACTL_3,[
+AC_TRY_RUN_STRICT([
+#define HAVE_QUOTACTL_3 1
+#define AUTOCONF_TEST 1
+#include "confdefs.h"
+#include "${srcdir-.}/lib/sysquotas.c"],[$Werror_FLAGS],[$CPPFLAGS],[$LDFLAGS],
+           samba_cv_HAVE_QUOTACTL_3=yes,samba_cv_HAVE_QUOTACTL_3=no,samba_cv_HAVE_QUOTACTL_3=cross)])
+if test x"$samba_cv_HAVE_QUOTACTL_3" = x"yes"; then
+    echo "CRAY int quotactl (char *spec, int request, char *arg) is NOT reworked for the sys_quota api"
+#    samba_cv_SYSQUOTA_FOUND=yes;AC_DEFINE(HAVE_QUOTACTL_3,1,[Whether CRAY int quotactl (char *spec, int request, char *arg); is available])
+fi
+fi
+
+#################################################
+# check for mntent.h and struct mntent
+AC_CHECK_HEADERS(mntent.h)
+#################################################
+# check for setmntent,getmntent,endmntent
+AC_CHECK_FUNCS(setmntent getmntent endmntent)
+
+#################################################
+# check for devnm.h and struct mntent
+AC_CHECK_HEADERS(devnm.h)
+#################################################
+# check for devnm
+AC_CHECK_FUNCS(devnm)
+
+
+if test x"$samba_cv_SYSQUOTA_FOUND" = x"yes"; then
+AC_CACHE_CHECK([whether the sys_quota interface works],samba_cv_SYSQUOTA_WORKS,[
+SAVE_CPPFLAGS="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS -I${srcdir-.}/ -I. -I${srcdir-.}/include -I${srcdir-.}/ubiqx -I${srcdir-.}/popt  -I${srcdir-.}/smbwrapper -I${srcdir-.}/nsswitch"
+AC_TRY_COMPILE([
+#include "confdefs.h"
+#define NO_PROTO_H 1
+#define NO_CONFIG_H 1
+#define HAVE_SYS_QUOTAS 1
+#include "${srcdir-.}/lib/sysquotas.c"
+],[],samba_cv_SYSQUOTA_WORKS=yes,samba_cv_SYSQUOTA_WORKS=no)
+CPPFLAGS="$SAVE_CPPFLAGS"
+])
+if test x"$samba_cv_SYSQUOTA_WORKS" = x"yes"; then
+AC_MSG_CHECKING(whether to use the new lib/sysquotas.c interface)
+    if test x"$samba_cv_TRY_SYS_QUOTAS" = x"yes"; then 
+	AC_DEFINE(WITH_QUOTAS,1,[Whether to use disk quota support])
+	AC_DEFINE(HAVE_SYS_QUOTAS,1,[Whether the new lib/sysquotas.c interface can be used])
+	samba_cv_WE_USE_SYS_QUOTAS=yes
+	AC_MSG_RESULT(yes)
+    else
+        AC_MSG_RESULT(no)
+    fi
+fi
+fi
+
+AC_CACHE_CHECK([whether the old quota support works],samba_cv_QUOTA_WORKS,[
+SAVE_CPPFLAGS="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS -I${srcdir-.}/ -I. -I${srcdir-.}/include -I${srcdir-.}/ubiqx -I${srcdir-.}/popt  -I${srcdir-.}/smbwrapper -I${srcdir-.}/nsswitch"
+AC_TRY_COMPILE([
+#include "confdefs.h"
+#define NO_PROTO_H 1
+#define NO_CONFIG_H 1
+#include "${srcdir-.}/smbd/quotas.c"
+],[],samba_cv_QUOTA_WORKS=yes,samba_cv_QUOTA_WORKS=no)
+CPPFLAGS="$SAVE_CPPFLAGS"
+])
+if test x"$samba_cv_QUOTA_WORKS" = x"yes"; then
+    if test x"$samba_cv_WE_USE_SYS_QUOTAS" != x"yes"; then
+       AC_DEFINE(WITH_QUOTAS,1,[Whether to use disk quota support])
+    fi
+fi
+
+####################
+# End of quota check
+fi
 
 #################################################
 # check for experimental utmp accounting