2 # test diagnostics are printed when seeking too far in seekable files.
4 # Copyright (C) 2008-2010 Free Software Foundation, Inc.
6 # This program is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 3 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 if test "$VERBOSE" = yes; then
25 require_sparse_support_
# for `truncate --size=$OFF_T_MAX`
26 eval $
(getlimits
) # for OFF_T limits
29 printf "1234" > file || framework_failure
32 dd: \`standard input': cannot skip to specified offset
34 0+0 records out" > skip_err || framework_failure
36 # skipping beyond number of blocks in file should issue a warning
37 dd bs
=1 skip
=5 count
=0 status
=noxfer
< file 2> err || fail
=1
38 compare skip_err err || fail
=1
40 # skipping beyond number of bytes in file should issue a warning
41 dd bs
=3 skip
=2 count
=0 status
=noxfer
< file 2> err || fail
=1
42 compare skip_err err || fail
=1
44 # skipping beyond number of blocks in pipe should issue a warning
45 cat file |
dd bs
=1 skip
=5 count
=0 status
=noxfer
2> err || fail
=1
46 compare skip_err err || fail
=1
48 # skipping beyond number of bytes in pipe should issue a warning
49 cat file |
dd bs
=3 skip
=2 count
=0 status
=noxfer
2> err || fail
=1
50 compare skip_err err || fail
=1
52 # Check seeking beyond file already offset into
53 # skipping beyond number of blocks in file should issue a warning
54 (dd bs
=1 skip
=1 count
=0 2>/dev
/null
&&
55 dd bs
=1 skip
=4 status
=noxfer
2> err
) < file || fail
=1
56 compare skip_err err || fail
=1
58 # Check seeking beyond file already offset into
59 # skipping beyond number of bytes in file should issue a warning
60 (dd bs
=1 skip
=1 count
=0 2>/dev
/null
&&
61 dd bs
=2 skip
=2 status
=noxfer
2> err
) < file || fail
=1
62 compare skip_err err || fail
=1
64 # seeking beyond end of file is OK
65 dd bs
=1 seek
=5 count
=0 status
=noxfer
> file 2> err || fail
=1
67 0+0 records out" > err_ok || framework_failure
68 compare err_ok err || fail
=1
70 # skipping > OFF_T_MAX should fail immediately
71 dd bs
=1 skip
=$OFF_T_OFLOW count
=0 status
=noxfer
< file 2> err
&& fail
=1
72 # error message should be "... cannot skip: strerror(EOVERFLOW)"
73 grep "cannot skip:" err
>/dev
/null || fail
=1
75 # skipping > max file size should fail immediately
76 if ! truncate
--size=$OFF_T_MAX in 2>/dev
/null
; then
77 # truncate is to ensure file system doesn't actually support OFF_T_MAX files
78 dd bs
=1 skip
=$OFF_T_MAX count
=0 status
=noxfer
< file 2> err \
82 if test $lseek_ok = yes; then
83 # On Solaris 10 at least, lseek(>max file size) succeeds,
84 # so just check for the skip warning.
85 compare skip_err err || fail
=1
87 # On Linux kernels at least, lseek(>max file size) fails.
88 # error message should be "... cannot skip: strerror(EINVAL)"
89 grep "cannot skip:" err
>/dev
/null || fail
=1