use statfs for check_disk (still needs fs scan)

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@392 f882894a-f735-0410-b71e-b25c423dba1c

2 files changed, 94 insertions, 5 deletions

diff --git a/configure.in b/configure.in
index fcd5c56..8f7f4f9 100644
--- a/configure.in
+++ b/configure.in
@@ -21,9 +21,38 @@ AC_PROG_INSTALL
 AC_SUBST(INSTALL)
 
 AC_PROG_CC
+AC_PROG_CPP
+AC_PROG_GCC_TRADITIONAL
+AC_PROG_RANLIB
+AC_AIX
+AC_MINIX
+
 AC_PROG_MAKE_SET
 AC_PROG_AWK
 
+# Check for SunOS statfs brokenness wrt partitions 2GB and larger.
+# If <sys/vfs.h> exists and struct statfs has a member named f_spare,
+# enable the work-around code in fsusage.c.
+AC_MSG_CHECKING([for statfs that truncates block counts])
+AC_CACHE_VAL(fu_cv_sys_truncating_statfs,
+[AC_TRY_COMPILE([
+#if !defined(sun) && !defined(__sun)
+choke -- this is a workaround for a Sun-specific problem
+#endif
+#include <sys/types.h>
+#include <sys/vfs.h>],
+[struct statfs t; long c = *(t.f_spare);],
+fu_cv_sys_truncating_statfs=yes,
+fu_cv_sys_truncating_statfs=no,
+)])
+if test $fu_cv_sys_truncating_statfs = yes; then
+  AC_DEFINE(STATFS_TRUNCATES_BLOCK_COUNTS, 1,
+[  Define if the block counts reported by statfs may be truncated to 2GB
+   and the correct values may be stored in the f_spare array.
+   (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
+   SunOS 4.1.1 seems not to be affected.)])
+fi
+
 saved_srcdir=$srcdir
 srcdir=$srcdir/lib
 test -f $srcdir/getloadavg.c \
@@ -447,6 +476,15 @@ AC_HEADER_TIME
 AC_HEADER_SYS_WAIT
 AC_CHECK_HEADERS(signal.h strings.h string.h syslog.h unistd.h uio.h errno.h regex.h sys/types.h sys/time.h sys/socket.h sys/loadavg.h)
 AC_CHECK_HEADERS(stdarg.h sys/unistd.h unistd.h ctype.h stdlib.h)
+AC_CHECK_HEADERS(sys/vfs.h,
+                 [AC_TRY_COMPILE([#include <sys/vfs.h>],
+                                 [struct statfs *buf],
+                                 [AC_DEFINE(HAVE_STRUCT_STATFS,1,[Define if statfs struct can be found])])])
+AC_CHECK_HEADERS(sys/param.h sys/mount.h,
+                 [AC_TRY_COMPILE([#include <sys/param.h>
+#include <sys/mount.h>],
+                                 [struct statfs *buf],
+                                 [AC_DEFINE(HAVE_STRUCT_STATFS,1,[Define if statfs struct can be found])])])
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
diff --git a/plugins/check_disk.c b/plugins/check_disk.c
index 9421d06..1afc762 100644
--- a/plugins/check_disk.c
+++ b/plugins/check_disk.c
@@ -36,6 +36,14 @@
 #include "utils.h"
 #include <stdarg.h>
 
+#ifdef _AIX
+ #pragma alloca
+#endif
+
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+
 #define REVISION "$Revision$"
 #define COPYRIGHT "2000-2002"
 
@@ -73,9 +81,52 @@ main (int argc, char **argv)
         char mntp[MAX_INPUT_BUFFER];
         char *output = "";
 
+#ifdef HAVE_STRUCT_STATFS
+#ifdef HAVE_SYS_VFS_H
+#include <sys/vfs.h>
+#else
+#include <sys/param.h>
+#include <sys/mount.h>
+#endif
+        struct statfs buf;
+#endif
+
         if (process_arguments (argc, argv) != OK)
                 usage ("Could not parse arguments\n");
 
+#ifdef HAVE_STRUCT_STATFS
+
+        if (statfs (path, &buf) == -1) {
+                switch (errno)
+                        {
+                        case ENOTDIR:
+                                terminate (STATE_UNKNOWN, "A component of the path prefix is not a directory.\n");
+                        case ENAMETOOLONG:
+                                terminate (STATE_UNKNOWN, "path is too long.\n");
+                        case ENOENT:
+                                terminate (STATE_UNKNOWN, "The file referred to by path does not exist.\n");
+                        case EACCES:
+                                terminate (STATE_UNKNOWN, "Search permission is denied for a component of the path prefix of path.\n");
+                        case ELOOP:
+                                terminate (STATE_UNKNOWN, "Too many symbolic links were encountered in translating path.\n");
+                        case EFAULT:
+                                terminate (STATE_UNKNOWN, "Buf or path points to an invalid address.\n");
+                        case EIO:
+                                terminate (STATE_UNKNOWN, "An I/O error occurred while reading from or writing to the file system.\n");
+                        case ENOMEM:
+                                terminate (STATE_UNKNOWN, "Insufficient kernel memory was available.\n");
+                        case ENOSYS:
+                                terminate (STATE_UNKNOWN, "The  filesystem path is on does not support statfs.\n");
+                        }
+        }
+        usp = (buf.f_blocks - buf.f_bavail) / buf.f_blocks;
+        disk_result = check_disk (usp, buf.f_bavail);
+        result = disk_result;
+        asprintf (&output, "%ld of %ld kB free (%ld-byte blocks)",
+                  buf.f_bavail*buf.f_bsize/1024, buf.f_blocks*buf.f_bsize/1024, buf.f_bsize);
+
+#else
+
         asprintf (&command_line, "%s %s", DF_COMMAND, path);
 
         if (verbose>0)
@@ -151,13 +202,13 @@ main (int argc, char **argv)
                         result = STATE_WARNING;
 
         if (usp < 0)
-                printf ("Disk \"%s\" not mounted or nonexistant\n", path);
+                terminate (result, "Disk \"%s\" not mounted or nonexistant\n", path);
         else if (result == STATE_UNKNOWN)
-                printf ("Unable to read output\n%s\n%s\n", command_line, input_buffer);
-        else
-                printf ("DISK %s%s\n", state_text (result), output);
+                terminate (result, "Unable to read output\n%s\n%s\n", command_line, input_buffer);
 
-        return result;
+#endif
+
+        terminate (result, "DISK %s %s\n", state_text (result), output);
 }
 
 /* process command-line arguments */