coreutils/src/dd.c, branch v8.18

doc: document multiplier for dd number options like count=N

2012-06-22T11:16:04Z

* src/dd.c (usage): Add "N" to the description of multipliers. * doc/coreutils.texi (dd invocation): Likewise.

maint: refactor common mode bits used to create files

2012-06-22T10:17:38Z

* src/system.h (MODE_RW_UGO): The new refactored define (666). * src/mkfifo.c: Use the new define. * src/mknod.c: Likewise. * src/split.c: Likewise. * src/system.h: Likewise. * src/touch.c: Likewise. * src/truncate.c: Likewise. Suggested-by: Jim Meyering

maint: handle file sizes more reliably

2012-05-10T09:02:42Z

Problem reported by Samuel Thibault in . * NEWS: Document this. * src/dd.c (skip): Handle skipping past EOF on shared or typed memory objects the same way as with regular files. (dd_copy): It's OK to truncate shared memory objects. * src/du.c (duinfo_add): Check for overflow. (print_only_size): Report overflow. (process_file): Ignore negative file sizes in the --apparent-size case. * src/od.c (skip): Fix comment about st_size. * src/split.c (main): * src/truncate.c (do_ftruncate, main): On files where st_size is not portable, fall back on using lseek with SEEK_END to determine the size. Although strictly speaking POSIX says the behavior is implementation-defined, in practice if lseek returns a nonnegative value it's a reasonable one to use for the file size. * src/system.h (usable_st_size): Symlinks have reliable st_size too. * tests/misc/truncate-dir-fail: Don't assume that getting the size of a dir is not allowed, as it's now allowed on many platforms, e.g., GNU/Linux.

maint: refactor copy to use is_nul()

2012-03-06T23:43:21Z

* src/dd.c: Move is_nul() from here to ... * src/system.h: ... here * src/copy.c (sparse_copy): Adjust to use the refactored is_nul()

dd: add support for the conv=sparse option

2012-02-29T00:17:56Z

Notes: Small seeks are not coalesced to larger ones, like is done in cache_round() for example. conv= is used rather then oflag= for FreeBSD compatibility. * src/dd.c (final_op_was_seek): A new global boolean to flag whether the final "write" was converted to a seek. (usage): Describe the new conf=sparse option. (iwrite): Convert a write of a NUL block to a seek if requested. (do_copy): Initialize the output buffer to have a sentinel, to allow for efficient testing for NUL output blocks. If the last block in the file was converted to a seek, then convert back to a write so the size is updated. * NEWS: Mention the new feature. * tests/dd/sparse: A new test for the feature. * tests/Makefile.am: Reference the new test.

dd: fix issues in the count_bytes and seek_bytes flags change

2012-02-13T21:58:21Z

These edge cases were missed in the previous commit 140eca15c. * src/dd.c (main): Include the bytes slop when truncating without further I/O. Don't invalidate the whole file cache in the case where 0 < count < ibs. * tests/dd/bytes: Change to using the independent truncate command to generate the file for comparison. Remove a redundant test case and replace with one testing the truncation only logic.

dd: add count_bytes, skip_bytes and seek_bytes flags

2012-02-12T17:34:28Z

dd now accepts the count_bytes and skip_bytes input flag and the seek_bytes output flag, to more easily allow processing portions of a file. * src/dd.c (scanargs): Compute skip_records and skip_bytes when 'skip_bytes' iflag is used. Compute max_records and max_bytes when 'count_bytes' iflag is used. Compute seek_records and seek_bytes when 'seek_bytes' oflag is used. (skip_via_lseek): Use new 'bytes' parameter and handle potential 'records' equals to zero. Update the bytes parameter when called with 'fdesc' equal to STDOUT_FILENO. Update the header comments. (dd_copy): Skip accordingly to skip_records AND skip_bytes. Count accordingly to max_records AND max_bytes. Seek on output accordingly to seek_records AND seek_bytes. * NEWS (New features): Mention it. * doc/coreutils.texi (dd invocation): Detail new flags and behaviors. * tests/dd/bytes: New file. Tests for these new flags. * tests/Makefile.am (TESTS): Add it.

maint: add braces as requested by HACKING coding standard

2012-02-06T01:34:20Z

* src/dd.c (dd_copy): Braces were missing for this do/while statement.

maint: use single copyright year range

2012-01-27T10:35:24Z

Run "make update-copyright".

maint: src/*.c: change remaining quotes (without embedded spaces)

2012-01-09T20:50:08Z

Run this (twice): git grep -E -l '`[^ ]+'\' src/*.c \ |xargs perl -pi -e 's/`([^ ]+'\'')/'\''$1/'