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authorJim Meyering <meyering@redhat.com>2011-05-11 17:13:53 +0200
committerJim Meyering <meyering@redhat.com>2011-05-13 18:28:43 +0200
commita085b6fc6c8fa03dac20f01f2f2b64b50b8bdf66 (patch)
tree817f262f34c1aa38bbf703b7d627a4266e48b755 /tests/du
parent6bc73ee56ee525b30053cf7ec06215ef39f9e8de (diff)
downloadcoreutils-a085b6fc6c8fa03dac20f01f2f2b64b50b8bdf66.tar.xz
ls: allow stat-free use of --color
Even on a system with d_type support, the default use of --color makes ls stat every file in order to be able to honor settings like EXEC, STICKY, ORPHAN, SETUID, etc., because those settings require information that is not provided by dirent.d_type. However, if for a potentially large performance gain, you are willing to disable those settings, you can now make ls --color give type-related coloring and perform no stat calls at all (other than the unavoidable call-per- command-line argument). Before this change, even with all of those attributes disabled, ls --color would still stat every directory. Now, we're down to the minimum of one stat call per command-line arg. * src/ls.c (gobble_file): With --color, don't stat a non-command-line-specified directory when no directory-coloring attribute is enabled. * tests/init.cfg (require_dirent_d_type_): New function. * tests/d_type-check: New script, mostly from Pádraig Brady. * tests/Makefile.am (EXTRA_DIST): Add it. * tests/ls/stat-free-color: New test. * tests/Makefile.am (TESTS): Add it. * doc/coreutils.texi (General output formatting): Describe how to use dircolors to make ls --color refrain from calling stat on a d_type-enabled file system. Prompted by a query from Josef Bacik.
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