mirror of
https://github.com/hanzoai/visor.git
synced 2026-09-24 17:04:14 +00:00
Ryan El Kochta
1653b017f5
Adds the infrastructure for a DynamicBytesFile to become pollable (perhaps with select, poll, or epoll). Simply arrange for a DynamicBytesPoller to be notified whenever the relevant file is updated and implement PollableDynamicBytesSource on the DynamicBytesSource. EPOLLPRI and EPOLLERR are triggered for these files, which seems to match Linux's implementation for /proc/sys files. The first two files to support this are hostname and domainname in /proc/sys/kernel. This is used by systemd-journald to monitor for hostname changes.
181 lines
4.1 KiB
Python
181 lines
4.1 KiB
Python
load("//pkg/sync/locking:locking.bzl", "declare_mutex", "declare_rwmutex")
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load("//tools:defs.bzl", "go_library", "go_test")
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load("//tools/go_generics:defs.bzl", "go_template_instance")
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package(default_applicable_licenses = ["//:license"])
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licenses(["notice"])
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go_template_instance(
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name = "dentry_list",
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out = "dentry_list.go",
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package = "kernfs",
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prefix = "dentry",
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template = "//pkg/ilist:generic_list",
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types = {
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"Element": "*Dentry",
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"Linker": "*Dentry",
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},
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)
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go_template_instance(
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name = "fstree",
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out = "fstree.go",
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package = "kernfs",
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prefix = "generic",
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template = "//pkg/sentry/vfs/genericfstree:generic_fstree",
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types = {
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"Dentry": "Dentry",
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"Filesystem": "Filesystem",
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},
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)
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go_template_instance(
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name = "slot_list",
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out = "slot_list.go",
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package = "kernfs",
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prefix = "slot",
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template = "//pkg/ilist:generic_list",
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types = {
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"Element": "*slot",
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"Linker": "*slot",
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},
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)
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go_template_instance(
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name = "static_directory_refs",
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out = "static_directory_refs.go",
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package = "kernfs",
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prefix = "StaticDirectory",
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template = "//pkg/refs:refs_template",
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types = {
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"T": "StaticDirectory",
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},
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)
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go_template_instance(
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name = "dir_refs",
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out = "dir_refs.go",
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package = "kernfs_test",
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prefix = "dir",
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template = "//pkg/refs:refs_template",
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types = {
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"T": "dir",
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},
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)
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go_template_instance(
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name = "readonly_dir_refs",
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out = "readonly_dir_refs.go",
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package = "kernfs_test",
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prefix = "readonlyDir",
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template = "//pkg/refs:refs_template",
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types = {
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"T": "readonlyDir",
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},
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)
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go_template_instance(
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name = "synthetic_directory_refs",
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out = "synthetic_directory_refs.go",
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package = "kernfs",
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prefix = "syntheticDirectory",
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template = "//pkg/refs:refs_template",
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types = {
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"T": "syntheticDirectory",
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},
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)
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declare_rwmutex(
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name = "ancestry_mutex",
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out = "ancestry_mutex.go",
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package = "kernfs",
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prefix = "ancestry",
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)
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declare_mutex(
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name = "deferred_dec_refs_mutex",
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out = "deferred_dec_refs_mutex.go",
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package = "kernfs",
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prefix = "deferredDecRefs",
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)
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declare_rwmutex(
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name = "filesystem_mutex",
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out = "filesystem_mutex.go",
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package = "kernfs",
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prefix = "filesystem",
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)
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go_library(
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name = "kernfs",
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srcs = [
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"ancestry_mutex.go",
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"deferred_dec_refs_mutex.go",
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"dentry_list.go",
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"dynamic_bytes_file.go",
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"fd_impl_util.go",
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"filesystem.go",
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"filesystem_mutex.go",
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"fstree.go",
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"inode_impl_util.go",
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"kernfs.go",
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"save_restore.go",
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"slot_list.go",
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"static_directory_refs.go",
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"symlink.go",
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"synthetic_directory.go",
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"synthetic_directory_refs.go",
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],
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visibility = ["//pkg/sentry:internal"],
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deps = [
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"//pkg/abi/linux",
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"//pkg/atomicbitops",
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"//pkg/context",
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"//pkg/errors/linuxerr",
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"//pkg/fspath",
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"//pkg/hostarch",
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"//pkg/log",
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"//pkg/refs",
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"//pkg/safemem",
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"//pkg/sentry/fsimpl/lock",
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"//pkg/sentry/fsutil",
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"//pkg/sentry/kernel/auth",
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"//pkg/sentry/ktime",
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"//pkg/sentry/memmap",
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"//pkg/sentry/socket/unix/transport",
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"//pkg/sentry/vfs",
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"//pkg/sync",
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"//pkg/sync/locking",
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"//pkg/usermem",
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"//pkg/waiter",
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],
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)
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go_test(
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name = "kernfs_test",
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size = "small",
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srcs = [
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"dir_refs.go",
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"kernfs_test.go",
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"readonly_dir_refs.go",
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],
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deps = [
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":kernfs",
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"//pkg/abi/linux",
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"//pkg/atomicbitops",
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"//pkg/context",
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"//pkg/errors/linuxerr",
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"//pkg/fspath",
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"//pkg/hostarch",
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"//pkg/log",
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"//pkg/refs",
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"//pkg/sentry/contexttest",
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"//pkg/sentry/fsimpl/testutil",
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"//pkg/sentry/kernel/auth",
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"//pkg/sentry/vfs",
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"//pkg/usermem",
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"@com_github_google_go_cmp//cmp:go_default_library",
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],
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)
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