Add localtime_r shim
This commit is contained in:
tiif
parent
bc1538dca0
commit
fde24ed5bf
@ -37,6 +37,21 @@ dependencies = [
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"memchr",
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]
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[[package]]
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name = "android-tzdata"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
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[[package]]
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name = "android_system_properties"
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version = "0.1.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
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dependencies = [
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"libc",
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]
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[[package]]
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name = "annotate-snippets"
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version = "0.9.2"
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@ -106,6 +121,12 @@ dependencies = [
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"serde",
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]
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[[package]]
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name = "bumpalo"
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version = "3.16.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
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[[package]]
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name = "camino"
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version = "1.1.6"
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@ -150,6 +171,18 @@ version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "chrono"
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version = "0.4.38"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a21f936df1771bf62b77f047b726c4625ff2e8aa607c01ec06e5a05bd8463401"
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dependencies = [
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"android-tzdata",
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"iana-time-zone",
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"num-traits",
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"windows-targets 0.52.3",
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]
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[[package]]
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name = "cipher"
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version = "0.4.4"
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@ -216,6 +249,12 @@ dependencies = [
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"windows-sys 0.52.0",
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]
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[[package]]
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name = "core-foundation-sys"
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version = "0.8.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
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[[package]]
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name = "cpufeatures"
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version = "0.2.12"
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@ -319,6 +358,29 @@ version = "0.28.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4271d37baee1b8c7e4b708028c57d816cf9d2434acb33a549475f78c181f6253"
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[[package]]
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name = "iana-time-zone"
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version = "0.1.60"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e7ffbb5a1b541ea2561f8c41c087286cc091e21e556a4f09a8f6cbf17b69b141"
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dependencies = [
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"android_system_properties",
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"core-foundation-sys",
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"iana-time-zone-haiku",
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"js-sys",
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"wasm-bindgen",
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"windows-core",
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]
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[[package]]
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name = "iana-time-zone-haiku"
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version = "0.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
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dependencies = [
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"cc",
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]
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[[package]]
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name = "indenter"
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version = "0.3.3"
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@ -372,6 +434,15 @@ dependencies = [
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"libc",
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]
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[[package]]
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name = "js-sys"
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version = "0.3.69"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "29c15563dc2726973df627357ce0c9ddddbea194836909d655df6a75d2cf296d"
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dependencies = [
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"wasm-bindgen",
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]
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[[package]]
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name = "lazy_static"
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version = "1.4.0"
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@ -484,6 +555,7 @@ name = "miri"
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version = "0.1.0"
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dependencies = [
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"aes",
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"chrono",
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"colored",
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"ctrlc",
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"getrandom",
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@ -512,6 +584,15 @@ dependencies = [
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"libc",
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]
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[[package]]
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name = "num-traits"
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version = "0.2.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "da0df0e5185db44f69b44f26786fe401b6c293d1907744beaa7fa62b2e5a517a"
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dependencies = [
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"autocfg",
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]
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[[package]]
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name = "number_prefix"
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version = "0.4.0"
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@ -964,6 +1045,60 @@ version = "0.11.0+wasi-snapshot-preview1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
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[[package]]
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name = "wasm-bindgen"
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version = "0.2.92"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
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dependencies = [
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"cfg-if",
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"wasm-bindgen-macro",
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]
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[[package]]
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name = "wasm-bindgen-backend"
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version = "0.2.92"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "614d787b966d3989fa7bb98a654e369c762374fd3213d212cfc0251257e747da"
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dependencies = [
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"bumpalo",
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"log",
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"once_cell",
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"proc-macro2",
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"quote",
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"syn",
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"wasm-bindgen-shared",
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]
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[[package]]
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name = "wasm-bindgen-macro"
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version = "0.2.92"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a1f8823de937b71b9460c0c34e25f3da88250760bec0ebac694b49997550d726"
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dependencies = [
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"quote",
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"wasm-bindgen-macro-support",
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]
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[[package]]
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name = "wasm-bindgen-macro-support"
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version = "0.2.92"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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"wasm-bindgen-backend",
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"wasm-bindgen-shared",
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]
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[[package]]
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name = "wasm-bindgen-shared"
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version = "0.2.92"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
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[[package]]
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name = "winapi"
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version = "0.3.9"
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@ -986,6 +1121,15 @@ version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
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[[package]]
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name = "windows-core"
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version = "0.52.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
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dependencies = [
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"windows-targets 0.52.3",
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]
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[[package]]
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name = "windows-sys"
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version = "0.48.0"
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@ -24,6 +24,7 @@ smallvec = "1.7"
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aes = { version = "0.8.3", features = ["hazmat"] }
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measureme = "11"
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ctrlc = "3.2.5"
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chrono = { version = "0.4.38", default-features = false, features = ["clock"] }
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# Copied from `compiler/rustc/Cargo.toml`.
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# But only for some targets, it fails for others. Rustc configures this in its CI, but we can't
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@ -1,5 +1,9 @@
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use std::ffi::OsString;
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use std::fmt::Write;
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use std::time::{Duration, SystemTime};
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use chrono::{DateTime, Datelike, Local, Timelike, Utc};
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use crate::concurrency::thread::MachineCallback;
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use crate::*;
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@ -107,6 +111,80 @@ fn gettimeofday(
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Ok(0)
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}
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// The localtime() function shall convert the time in seconds since the Epoch pointed to by
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// timer into a broken-down time, expressed as a local time.
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// https://linux.die.net/man/3/localtime_r
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fn localtime_r(
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&mut self,
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timep: &OpTy<'tcx, Provenance>,
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result_op: &OpTy<'tcx, Provenance>,
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) -> InterpResult<'tcx, Pointer<Option<Provenance>>> {
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let this = self.eval_context_mut();
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this.assert_target_os_is_unix("localtime_r");
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this.check_no_isolation("`localtime_r`")?;
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let timep = this.deref_pointer(timep)?;
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let result = this.deref_pointer_as(result_op, this.libc_ty_layout("tm"))?;
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// The input "represents the number of seconds elapsed since the Epoch,
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// 1970-01-01 00:00:00 +0000 (UTC)".
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let sec_since_epoch: i64 = this
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.read_scalar(&timep)?
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.to_int(this.libc_ty_layout("time_t").size)?
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.try_into()
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.unwrap();
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let dt_utc: DateTime<Utc> =
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DateTime::from_timestamp(sec_since_epoch, 0).expect("Invalid timestamp");
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// Convert that to local time, then return the broken-down time value.
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let dt: DateTime<Local> = DateTime::from(dt_utc);
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// This value is always set to -1, because there is no way to know if dst is in effect with
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// chrono crate yet.
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// This may not be consistent with libc::localtime_r's result.
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let tm_isdst = -1;
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// tm_zone represents the timezone value in the form of: +0730, +08, -0730 or -08.
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// This may not be consistent with libc::localtime_r's result.
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let offset_in_second = Local::now().offset().local_minus_utc();
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let tm_gmtoff = offset_in_second;
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let mut tm_zone = String::new();
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if offset_in_second < 0 {
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tm_zone.push('-');
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} else {
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tm_zone.push('+');
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}
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let offset_hour = offset_in_second.abs() / 3600;
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write!(tm_zone, "{:02}", offset_hour).unwrap();
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let offset_min = (offset_in_second.abs() % 3600) / 60;
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if offset_min != 0 {
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write!(tm_zone, "{:02}", offset_min).unwrap();
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}
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// FIXME: String de-duplication is needed so that we only allocate this string only once
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// even when there are multiple calls to this function.
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let tm_zone_ptr =
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this.alloc_os_str_as_c_str(&OsString::from(tm_zone), MiriMemoryKind::Machine.into())?;
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this.write_pointer(tm_zone_ptr, &this.project_field_named(&result, "tm_zone")?)?;
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this.write_int_fields_named(
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&[
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("tm_sec", dt.second().into()),
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("tm_min", dt.minute().into()),
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("tm_hour", dt.hour().into()),
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("tm_mday", dt.day().into()),
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("tm_mon", dt.month0().into()),
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("tm_year", dt.year().checked_sub(1900).unwrap().into()),
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("tm_wday", dt.weekday().num_days_from_sunday().into()),
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("tm_yday", dt.ordinal0().into()),
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("tm_isdst", tm_isdst),
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("tm_gmtoff", tm_gmtoff.into()),
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],
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&result,
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)?;
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Ok(result.ptr())
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}
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#[allow(non_snake_case, clippy::arithmetic_side_effects)]
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fn GetSystemTimeAsFileTime(
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&mut self,
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@ -234,6 +234,11 @@ fn emulate_foreign_item_inner(
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let result = this.gettimeofday(tv, tz)?;
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this.write_scalar(Scalar::from_i32(result), dest)?;
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}
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"localtime_r" => {
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let [timep, result_op] = this.check_shim(abi, Abi::C {unwind: false}, link_name, args)?;
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let result = this.localtime_r(timep, result_op)?;
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this.write_pointer(result, dest)?;
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}
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"clock_gettime" => {
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let [clk_id, tp] =
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this.check_shim(abi, Abi::C { unwind: false }, link_name, args)?;
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@ -213,6 +213,50 @@ fn test_posix_gettimeofday() {
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assert_eq!(is_error, -1);
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}
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fn test_localtime_r() {
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use std::ffi::CStr;
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use std::{env, ptr};
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// Set timezone to GMT.
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let key = "TZ";
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env::set_var(key, "GMT");
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const TIME_SINCE_EPOCH: libc::time_t = 1712475836;
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let custom_time_ptr = &TIME_SINCE_EPOCH;
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let mut tm = libc::tm {
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tm_sec: 0,
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tm_min: 0,
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tm_hour: 0,
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tm_mday: 0,
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tm_mon: 0,
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tm_year: 0,
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tm_wday: 0,
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tm_yday: 0,
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tm_isdst: 0,
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tm_gmtoff: 0,
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tm_zone: std::ptr::null_mut::<libc::c_char>(),
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};
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let res = unsafe { libc::localtime_r(custom_time_ptr, &mut tm) };
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assert_eq!(tm.tm_sec, 56);
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assert_eq!(tm.tm_min, 43);
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assert_eq!(tm.tm_hour, 7);
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assert_eq!(tm.tm_mday, 7);
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assert_eq!(tm.tm_mon, 3);
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assert_eq!(tm.tm_year, 124);
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assert_eq!(tm.tm_wday, 0);
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assert_eq!(tm.tm_yday, 97);
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assert_eq!(tm.tm_isdst, -1);
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assert_eq!(tm.tm_gmtoff, 0);
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unsafe { assert_eq!(CStr::from_ptr(tm.tm_zone).to_str().unwrap(), "+00") };
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// The returned value is the pointer passed in.
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assert!(ptr::eq(res, &mut tm));
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//Remove timezone setting.
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env::remove_var(key);
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}
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fn test_isatty() {
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// Testing whether our isatty shim returns the right value would require controlling whether
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// these streams are actually TTYs, which is hard.
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@ -365,6 +409,7 @@ fn main() {
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test_posix_realpath_errors();
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test_thread_local_errno();
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test_localtime_r();
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test_isatty();
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