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Only delete regular files and directories.

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This ports a missing feature from PathV1.h. I am not sure how to test this
with the regular infrastructure, but an Apple bot should check this when
r183985 is reapplied.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184119 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2013-06-17 20:35:51 +00:00
parent f7c9b95f94
commit 87bec915f1
1 changed files with 16 additions and 0 deletions
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16
lib/Support/Unix/PathV2.inc
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@ -236,6 +236,22 @@ error_code remove(const Twine &path, bool &existed) {
SmallString<128> path_storage; SmallString<128> path_storage;
StringRef p = path.toNullTerminatedStringRef(path_storage); StringRef p = path.toNullTerminatedStringRef(path_storage);
struct stat buf;
if (stat(p.begin(), &buf) != 0) {
if (errno != errc::no_such_file_or_directory)
return error_code(errno, system_category());
existed = false;
return error_code::success();
}
// Note: this check catches strange situations. In all cases, LLVM should
// only be involved in the creation and deletion of regular files. This
// check ensures that what we're trying to erase is a regular file. It
// effectively prevents LLVM from erasing things like /dev/null, any block
// special file, or other things that aren't "regular" files.
if (!S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode))
return make_error_code(errc::operation_not_permitted);
if (::remove(p.begin()) == -1) { if (::remove(p.begin()) == -1) {
if (errno != errc::no_such_file_or_directory) if (errno != errc::no_such_file_or_directory)
return error_code(errno, system_category()); return error_code(errno, system_category());