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-rw-r--r--NEWS4
-rw-r--r--src/df.c9
-rw-r--r--tests/Makefile.am1
-rwxr-xr-xtests/df/total-unprocessed41
4 files changed, 52 insertions, 3 deletions
diff --git a/NEWS b/NEWS
index f1255eabb..ca4568ae0 100644
--- a/NEWS
+++ b/NEWS
@@ -18,6 +18,10 @@ GNU coreutils NEWS -*- outline -*-
lines output by df, can work reliably.
[This bug was present in "the beginning".]
+ df --total now exits with an appropriate diagnostic and error code, when
+ file system --type options do not lead to a processed file system.
+ [This bug dates back to when --total was added in coreutils-7.0]
+
head --lines=-N (-n-N) now resets the read pointer of a seekable input file.
This means that "head -n-3" no longer consumes all of its input, and lines
not output by head may be processed by other programs. For example, this
diff --git a/src/df.c b/src/df.c
index 5dc3d2dd0..4f3b56b25 100644
--- a/src/df.c
+++ b/src/df.c
@@ -515,7 +515,8 @@ get_dev (char const *disk, char const *mount_point,
if (! file_systems_processed)
{
- file_systems_processed = true;
+ if (! force_fsu)
+ file_systems_processed = true;
get_header ();
}
@@ -1124,7 +1125,7 @@ main (int argc, char **argv)
else
get_all_entries ();
- if (print_grand_total)
+ if (print_grand_total && file_systems_processed)
{
if (inode_format)
grand_fsu.fsu_blocks = 1;
@@ -1133,7 +1134,9 @@ main (int argc, char **argv)
print_table ();
- if (! file_systems_processed)
+ /* Print the "no FS processed" diagnostic only if there was no preceding
+ diagnostic, e.g., if all have been excluded. */
+ if (exit_status == EXIT_SUCCESS && ! file_systems_processed)
error (EXIT_FAILURE, 0, _("no file systems processed"));
exit (exit_status);
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 4e7ea5835..edc04b4fb 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -375,6 +375,7 @@ TESTS = \
df/header \
df/df-P \
df/unreadable \
+ df/total-unprocessed \
dd/direct \
dd/misc \
dd/nocache \
diff --git a/tests/df/total-unprocessed b/tests/df/total-unprocessed
new file mode 100755
index 000000000..9742591f7
--- /dev/null
+++ b/tests/df/total-unprocessed
@@ -0,0 +1,41 @@
+#!/bin/sh
+# Ensure that df exits non-Zero and writes an error message when
+# --total is used but no file system has been processed.
+
+# Copyright (C) 2012 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+print_ver_ df
+
+cat <<\EOF > exp || framework_failure_
+df: no file systems processed
+EOF
+
+# The following simply finds no match for the combination
+# of the options --local and FS-type nfs together with the
+# argument ".". It must exit non-Zero nonetheless.
+df --local -t nfs --total "." 2>out && fail=1
+compare exp out || fail=1
+
+cat <<\EOF > exp || framework_failure_
+df: '_does_not_exist_': No such file or directory
+EOF
+
+# Ensure that df writes the error message also in the following case.
+df --total _does_not_exist_ 2>out && fail=1
+compare exp out || fail=1
+
+Exit $fail