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IOS/FS: Fix CreateFullPath to not create directories that already exist

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This fixes CreateFullPath to not create directories when it is known
that they already exist, instead of calling CreateDirectory anyway
and checking if the error is AlreadyExists. (That doesn't work
now that we have an accurate implementation of CreateDirectory
that performs permission checks before checking for existence.)

I'm not sure what I was thinking when I wrote that function.

Also adds some tests for CreateFullPath.
This commit is contained in:
Léo Lam 2020-01-30 18:07:03 +01:00
commit bbc8631357
2 changed files with 24 additions and 3 deletions
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18
Source/UnitTests/Core/IOS/FS/FileSystemTest.cpp
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@ -434,3 +434,21 @@ TEST_F(FileSystemTest, ReadDirectoryOrdering)
ASSERT_EQ(result->size(), file_names.size());
EXPECT_TRUE(std::equal(result->begin(), result->end(), file_names.rbegin()));
}
TEST_F(FileSystemTest, CreateFullPath)
{
ASSERT_EQ(m_fs->CreateFullPath(Uid{0}, Gid{0}, "/tmp/a/b/c/d", 0, modes), ResultCode::Success);
// Parent directories should be created by CreateFullPath.
for (const std::string& path : {"/tmp", "/tmp/a", "/tmp/a/b", "/tmp/a/b/c"})
EXPECT_TRUE(m_fs->ReadDirectory(Uid{0}, Gid{0}, path).Succeeded());
// If parent directories already exist, the call should still succeed.
EXPECT_EQ(m_fs->CreateFullPath(Uid{0}, Gid{0}, "/tmp/a/b/c/d", 0, modes), ResultCode::Success);
// If parent directories already exist and are owned by a different user,
// CreateFullPath should still succeed.
// See https://github.com/dolphin-emu/dolphin/pull/8593
EXPECT_EQ(m_fs->CreateFullPath(Uid{0x1000}, Gid{1}, "/shared2/wc24/mbox/Readme.txt", 0, modes),
ResultCode::Success);
}