mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Jamie Liu
0659b6035a
- Add type parameter Filesystem to vfs/genericfstree, which is required to provide `ancestryMu sync.RWMutex`, and add such a RWMutex to all FSImpls that use genericfstree. - Modify genericfstree.PrependPath() and genericfstree.IsDescendant() to use ancestryMu to ensure atomicity. For callers of genericfstree.PrependPath(), this means that (broader) FSImpl locks no longer need to be held during the call. For callers of genericfstree.IsDescendant(), this means that we can remove documentation warnings about its non-atomicity. - Minor cleanup: Remove useless variable `start`, which is always 0, from MM.ReadMaps/SmapsDataInto(). PiperOrigin-RevId: 696713993
172 lines
3.8 KiB
Python
172 lines
3.8 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 = "tmpfs",
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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 = "tmpfs",
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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 = "inode_refs",
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out = "inode_refs.go",
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package = "tmpfs",
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prefix = "inode",
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template = "//pkg/refs:refs_template",
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types = {
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"T": "inode",
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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 = "tmpfs",
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prefix = "ancestry",
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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 = "tmpfs",
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prefix = "filesystem",
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)
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declare_mutex(
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name = "inode_mutex",
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out = "inode_mutex.go",
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package = "tmpfs",
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prefix = "inode",
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)
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declare_mutex(
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name = "iter_mutex",
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out = "iter_mutex.go",
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package = "tmpfs",
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prefix = "iter",
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)
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declare_mutex(
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name = "pages_used_mutex",
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out = "pages_used_mutex.go",
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package = "tmpfs",
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prefix = "pagesUsed",
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)
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go_library(
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name = "tmpfs",
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srcs = [
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"ancestry_mutex.go",
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"dentry_list.go",
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"device_file.go",
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"directory.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_mutex.go",
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"inode_refs.go",
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"iter_mutex.go",
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"named_pipe.go",
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"pages_used_mutex.go",
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"regular_file.go",
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"save_restore.go",
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"socket_file.go",
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"symlink.go",
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"tmpfs.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/fd",
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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/arch",
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"//pkg/sentry/fsimpl/lock",
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"//pkg/sentry/fsmetric",
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"//pkg/sentry/fsutil",
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"//pkg/sentry/hostfd",
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"//pkg/sentry/kernel/auth",
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"//pkg/sentry/kernel/pipe",
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"//pkg/sentry/ktime",
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"//pkg/sentry/memmap",
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"//pkg/sentry/pgalloc",
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"//pkg/sentry/platform",
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"//pkg/sentry/socket/unix/transport",
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"//pkg/sentry/uniqueid",
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"//pkg/sentry/usage",
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"//pkg/sentry/vfs",
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"//pkg/sentry/vfs/memxattr",
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"//pkg/sync",
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"//pkg/sync/locking",
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"//pkg/usermem",
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],
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)
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go_test(
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name = "benchmark_test",
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size = "small",
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srcs = ["benchmark_test.go"],
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deps = [
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":tmpfs",
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"//pkg/abi/linux",
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"//pkg/fspath",
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"//pkg/refs",
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"//pkg/sentry/contexttest",
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"//pkg/sentry/kernel/auth",
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"//pkg/sentry/vfs",
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],
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)
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go_test(
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name = "tmpfs_test",
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size = "small",
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srcs = [
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"pipe_test.go",
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"regular_file_test.go",
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"stat_test.go",
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"tmpfs_test.go",
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],
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library = ":tmpfs",
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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/sentry/contexttest",
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"//pkg/sentry/fsimpl/lock",
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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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],
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)
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