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Kernel: Memory-mapped files now have the absolute path as their name.

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It's generated when the mapping is first created, so it won't update if
the file moves. Maybe that's something we should support, too.
This commit is contained in:
Andreas Kling 2019-06-02 10:14:28 +02:00
parent 4320c5fd58
commit 5e1c7cb32c
Notes: sideshowbarker 2024-07-19 13:47:51 +09:00
9 changed files with 10 additions and 17 deletions
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11
Kernel/FileSystem/InodeFile.cpp
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@ -23,19 +23,12 @@ ssize_t InodeFile::write(FileDescriptor& descriptor, const byte* data, ssize_t c
return m_inode->write_bytes(descriptor.offset(), count, data, &descriptor);
}
KResultOr<Region*> InodeFile::mmap(Process& process, LinearAddress preferred_laddr, size_t offset, size_t size, int prot)
KResultOr<Region*> InodeFile::mmap(Process& process, FileDescriptor& descriptor, LinearAddress preferred_laddr, size_t offset, size_t size, int prot)
{
ASSERT(offset == 0);
// FIXME: If PROT_EXEC, check that the underlying file system isn't mounted noexec.
String region_name;
#if 0
// FIXME: I would like to do this, but it would instantiate all the damn inodes.
region_name = absolute_path();
#else
region_name = "Memory-mapped file";
#endif
InterruptDisabler disabler;
auto* region = process.allocate_file_backed_region(preferred_laddr, size, inode(), move(region_name), prot);
auto* region = process.allocate_file_backed_region(preferred_laddr, size, inode(), descriptor.absolute_path(), prot);
if (!region)
return KResult(-ENOMEM);
return region;