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VFS: catch Out_of_ram and Out_of_cap exceptions

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Catch out of RAM and capability exceptions and return error values.
Abort opening a composite directory at Dir_file_system where an
opendir call on any child file-system returns an OUT_OF_RAM or
OUT_OF_CAPS error.

Ref #2642
This commit is contained in:
Emery Hemingway
2018-01-12 13:47:48 -06:00
committed by Norman Feske
parent c34a4bfdb4
commit c7d0accac0
14 changed files with 194 additions and 80 deletions
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9
repos/os/src/lib/vfs/null_file_system.h
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@ -69,8 +69,13 @@ struct Vfs::Null_file_system : Single_file_system
if (!_single_file(path))
return OPEN_ERR_UNACCESSIBLE;
*out_handle = new (alloc) Null_vfs_handle(*this, *this, alloc);
return OPEN_OK;
try {
*out_handle = new (alloc)
Null_vfs_handle(*this, *this, alloc);
return OPEN_OK;
}
catch (Genode::Out_of_ram) { return OPEN_ERR_OUT_OF_RAM; }
catch (Genode::Out_of_caps) { return OPEN_ERR_OUT_OF_CAPS; }
}
/********************************