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Userland+Tests: Convert File::read_link() from String to ErrorOr<String>

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This converts the return value of File::read_link() from String to
ErrorOr<String>.

The rest of the change is to support the potential of an Error being
returned and subsequent release of the value when no Error is returned.
Unfortunately at this stage none of the places affected can utililize
our TRY() macro.
This commit is contained in:
Kenneth Myhra
2022-03-23 16:36:03 +01:00
committed by Andreas Kling
parent 10093a6773
commit 4a57be824c
Notes: sideshowbarker 2024-07-17 16:50:51 +09:00 
Author: https://github.com/kennethmyhra
Commit: https://github.com/SerenityOS/serenity/commit/4a57be824c
Pull-request: https://github.com/SerenityOS/serenity/pull/13215
Reviewed-by: https://github.com/awesomekling
12 changed files with 72 additions and 30 deletions
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6
Userland/Libraries/LibGUI/FileSystemModel.cpp
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@@ -61,7 +61,11 @@ bool FileSystemModel::Node::fetch_data(String const& full_path, bool is_root)
mtime = st.st_mtime;
if (S_ISLNK(mode)) {
symlink_target = Core::File::read_link(full_path);
auto sym_link_target_or_error = Core::File::read_link(full_path);
if (sym_link_target_or_error.is_error())
perror("readlink");
symlink_target = sym_link_target_or_error.release_value();
if (symlink_target.is_null())
perror("readlink");
}