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Kernel: Expose blocking and cloexec fd flags in ProcFS

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Sergey Bugaev 2019-09-28 23:00:38 +03:00 • committed by Andreas Kling
parent eb18825fce
commit 9a41dda029
3 changed files with 14 additions and 0 deletions
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4
Kernel/FileSystem/ProcFS.cpp
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@ -211,12 +211,16 @@ Optional<KBuffer> procfs$pid_fds(InodeIdentifier identifier)
auto* description = process.file_description(i); auto* description = process.file_description(i);
if (!description) if (!description)
continue; continue;
bool cloexec = process.fd_flags(i) & FD_CLOEXEC;
JsonObjectSerializer description_object = array.add_object(); JsonObjectSerializer description_object = array.add_object();
description_object.add("fd", i); description_object.add("fd", i);
description_object.add("absolute_path", description->absolute_path()); description_object.add("absolute_path", description->absolute_path());
description_object.add("seekable", description->file().is_seekable()); description_object.add("seekable", description->file().is_seekable());
description_object.add("class", description->file().class_name()); description_object.add("class", description->file().class_name());
description_object.add("offset", description->offset()); description_object.add("offset", description->offset());
description_object.add("cloexec", cloexec);
description_object.add("blocking", description->is_blocking());
} }
array.finish(); array.finish();
return builder.build(); return builder.build();

9
Kernel/Process.cpp
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@ -917,6 +917,15 @@ const FileDescription* Process::file_description(int fd) const
return nullptr; return nullptr;
} }
int Process::fd_flags(int fd) const
{
if (fd < 0)
return -1;
if (fd < m_fds.size())
return m_fds[fd].flags;
return -1;
}
ssize_t Process::sys$get_dir_entries(int fd, void* buffer, ssize_t size) ssize_t Process::sys$get_dir_entries(int fd, void* buffer, ssize_t size)
{ {
if (size < 0) if (size < 0)

1
Kernel/Process.h
View file

@ -95,6 +95,7 @@ public:
FileDescription* file_description(int fd); FileDescription* file_description(int fd);
const FileDescription* file_description(int fd) const; const FileDescription* file_description(int fd) const;
int fd_flags(int fd) const;
template<typename Callback> template<typename Callback>
static void for_each(Callback); static void for_each(Callback);