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Merge pull request #3156 from jfinkels/dd-cbs-blocks

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dd: pad partial record with spaces in some cases
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Sylvestre Ledru 2022-03-03 22:35:58 +01:00 • committed by GitHub
commit 66e9956595
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2 changed files with 57 additions and 21 deletions
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25
tests/by-util/test_dd.rs
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@ -1,4 +1,4 @@
// spell-checker:ignore fname, tname, fpath, specfile, testfile, unspec, ifile, ofile, outfile, fullblock, urand, fileio, atoe, atoibm, availible, behaviour, bmax, bremain, btotal, cflags, creat, ctable, ctty, datastructures, doesnt, etoa, fileout, fname, gnudd, iconvflags, nocache, noctty, noerror, nofollow, nolinks, nonblock, oconvflags, outfile, parseargs, rlen, rmax, rposition, rremain, rsofar, rstat, sigusr, sigval, wlen, wstat abcdefghijklm abcdefghi
// spell-checker:ignore fname, tname, fpath, specfile, testfile, unspec, ifile, ofile, outfile, fullblock, urand, fileio, atoe, atoibm, availible, behaviour, bmax, bremain, btotal, cflags, creat, ctable, ctty, datastructures, doesnt, etoa, fileout, fname, gnudd, iconvflags, nocache, noctty, noerror, nofollow, nolinks, nonblock, oconvflags, outfile, parseargs, rlen, rmax, rposition, rremain, rsofar, rstat, sigusr, sigval, wlen, wstat abcdefghijklm abcdefghi nabcde nabcdefg abcdefg
use crate::common::util::*;
@ -1116,3 +1116,26 @@ fn test_truncated_record() {
fn test_outfile_dev_null() {
new_ucmd!().arg("of=/dev/null").succeeds().no_stdout();
}
#[test]
fn test_block_sync() {
new_ucmd!()
.args(&["ibs=5", "cbs=5", "conv=block,sync", "status=noxfer"])
.pipe_in("012\nabcde\n")
.succeeds()
// blocks: 1 2
.stdout_is("012 abcde")
.stderr_is("2+0 records in\n0+1 records out\n");
// It seems that a partial record in is represented as an
// all-spaces block at the end of the output. The "1 truncated
// record" line is present in the status report due to the line
// "abcdefg\n" being truncated to "abcde".
new_ucmd!()
.args(&["ibs=5", "cbs=5", "conv=block,sync", "status=noxfer"])
.pipe_in("012\nabcdefg\n")
.succeeds()
// blocks: 1 2 3
.stdout_is("012 abcde ")
.stderr_is("2+1 records in\n0+1 records out\n1 truncated record\n");
}