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authorDenys Vlasenko <vda.linux@googlemail.com>2020-02-17 16:02:40 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2020-02-17 16:02:40 +0100
commit6c4f87e411aa5375eaea5a5909a5c610e38c7e70 (patch)
tree0ef3d39731e103f0cdbdf2eec4676eebba8236a0 /configs
parentb0d2dc7d62f6dea67b82e451510fa77243b4c60c (diff)
downloadbusybox-6c4f87e411aa5375eaea5a5909a5c610e38c7e70.tar.gz
ash: exec: Stricter pathopt parsing
Upstream comment: Date: Sat, 19 May 2018 02:39:50 +0800 exec: Stricter pathopt parsing This patch changes the parsing of pathopt. First of all only %builtin and %func (with arbitrary suffixes) will be recognised. Any other pathopt will be treated as a normal directory. Furthermore, pathopt can now be specified before the directory, rather than after it. In fact, a future version may remove support for pathopt suffixes. Wherever the pathopt is placed, an optional % may be placed after it to terminate the pathopt. This is so that it is less likely that a genuine directory containing a % sign is parsed as a pathopt. Users of padvance outside of exec.c have also been modified: 1) cd(1) will always treat % characters as part of the path. 2) chkmail will continue to accept arbitrary pathopt. 3) find_dot_file will ignore the %builtin pathopt instead of trying to do a stat in the accompanying directory (which is usually the current directory). The patch also removes the clearcmdentry optimisation where we attempt to only partially flush the table where possible. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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