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path: root/toys/posix/basename.c
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2018-12-04Clean up some --help formatting.Elliott Hughes
Be consistent about upper versus lower case. (Upper seems to have the majority, so I went with that, though I'm happy to provide the opposite patch as long as we're consistent!) Be consistent about using \t. (Though saving a few bytes seems like it might be better done in the code that generates help.h rather than directly in the source, since tabs make careful ASCII art layout hard enough that we regularly have things misaligned.) Remove trailing periods (most of which seem to have been added by me). Always use the US "human readable" rather than my British "human-readable", and be more consistent about declaring whether we're showing multiples of 1000 or 1024. Just say "verbose" rather than adding a useless "mode" or "output".
2018-11-13basename: -s SUFFIX.Elliott Hughes
AOSP doesn't need -a specifically, but since it's needed for -s we may as well accept it too.
2017-05-08Move strend() to lib/lib.cRob Landley
2016-03-25basename: fix segfault on null input; add testsSamuel Holland
When passed an empty string, glibc's basename() returns a pointer to the string "." in read-only memory. If an empty suffix is given, it fits the condition of being shorter than the path, so we try to overwrite the null byte and crash. Fix this by just ignoring empty suffixes; they don't do anything anyway.
2015-08-25Static analysis from Hyejin Kim found possible pointer underflow.Rob Landley
Now that the kernel's 128k environment size has been lifted, it might be possible to feed in a gigabyte of suffix so argv[2] is enough larger than argv[1] that char *s decrements past NULL and points to arbitrary high memory (I.E. strlen(suffix) > (long)base), at which point the base > s test is defeated and we strcmp() against a wild pointer. Which is read only anyway and on 64 bit you probably couldn't hit any interesting addresses, but the fix is easy enough: compare strlen values instead of pointers. So do that instead.
2013-01-04Make basename use basename().Rob Landley
2012-11-13Reindent to two spaces per level. Remove vi: directives that haven't worked ↵Rob Landley
right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. The actual code should be the same afterward, this is just cosmetic refactoring.
2012-08-25Move commands into "posix", "lsb", and "other" menus/directories.Rob Landley