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* work around linux bug in readlink syscall with zero buffer sizeRich Felker2020-11-231-1/+8
| | | | | | | | | | linux fails with EINVAL when a zero buffer size is passed to the syscall. this is non-conforming because POSIX already defines EINVAL with a significantly different meaning: the target is not a symlink. since the request is semantically valid, patch it up by using a dummy buffer of length one, and truncating the return value to zero if it succeeds.
* use restrict everywhere it's required by c99 and/or posix 2008Rich Felker2012-09-061-1/+1
| | | | | | | | to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
* fix various errors in function signatures/prototypes found by nszRich Felker2011-09-131-1/+1
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* global cleanup to use the new syscall interfaceRich Felker2011-03-201-1/+1
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* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-121-0/+7