Vendor things

third-party/vendor/filetime/src/unix/android.rs

@@ -0,0 +1,63 @@
+use crate::FileTime;
+use std::ffi::CString;
+use std::fs::File;
+use std::io;
+use std::os::unix::prelude::*;
+use std::path::Path;
+
+pub fn set_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), false)
+}
+
+pub fn set_file_mtime(p: &Path, mtime: FileTime) -> io::Result<()> {
+    set_times(p, None, Some(mtime), false)
+}
+
+pub fn set_file_atime(p: &Path, atime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), None, false)
+}
+
+pub fn set_file_handle_times(
+    f: &File,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+) -> io::Result<()> {
+    let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
+
+    // On Android NDK before version 19, `futimens` is not available.
+    //
+    // For better compatibility, we reimplement `futimens` using `utimensat`,
+    // the same way as bionic libc uses it to implement `futimens`.
+    let rc = unsafe { libc::utimensat(f.as_raw_fd(), core::ptr::null(), times.as_ptr(), 0) };
+    if rc == 0 {
+        Ok(())
+    } else {
+        Err(io::Error::last_os_error())
+    }
+}
+
+pub fn set_symlink_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), true)
+}
+
+fn set_times(
+    p: &Path,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+    symlink: bool,
+) -> io::Result<()> {
+    let flags = if symlink {
+        libc::AT_SYMLINK_NOFOLLOW
+    } else {
+        0
+    };
+
+    let p = CString::new(p.as_os_str().as_bytes())?;
+    let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
+    let rc = unsafe { libc::utimensat(libc::AT_FDCWD, p.as_ptr(), times.as_ptr(), flags) };
+    if rc == 0 {
+        Ok(())
+    } else {
+        Err(io::Error::last_os_error())
+    }
+}

third-party/vendor/filetime/src/unix/linux.rs

@@ -0,0 +1,117 @@
+//! On Linux we try to use the more accurate `utimensat` syscall but this isn't
+//! always available so we also fall back to `utimes` if we couldn't find
+//! `utimensat` at runtime.
+
+use crate::FileTime;
+use std::ffi::CString;
+use std::fs;
+use std::io;
+use std::os::unix::prelude::*;
+use std::path::Path;
+use std::ptr;
+use std::sync::atomic::AtomicBool;
+use std::sync::atomic::Ordering::SeqCst;
+
+pub fn set_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), false)
+}
+
+pub fn set_file_mtime(p: &Path, mtime: FileTime) -> io::Result<()> {
+    set_times(p, None, Some(mtime), false)
+}
+
+pub fn set_file_atime(p: &Path, atime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), None, false)
+}
+
+pub fn set_file_handle_times(
+    f: &fs::File,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+) -> io::Result<()> {
+    // Attempt to use the `utimensat` syscall, but if it's not supported by the
+    // current kernel then fall back to an older syscall.
+    static INVALID: AtomicBool = AtomicBool::new(false);
+    if !INVALID.load(SeqCst) {
+        let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
+
+        // We normally use a syscall because the `utimensat` function is documented
+        // as not accepting a file descriptor in the first argument (even though, on
+        // Linux, the syscall itself can accept a file descriptor there).
+        #[cfg(not(target_env = "musl"))]
+        let rc = unsafe {
+            libc::syscall(
+                libc::SYS_utimensat,
+                f.as_raw_fd(),
+                ptr::null::<libc::c_char>(),
+                times.as_ptr(),
+                0,
+            )
+        };
+        // However, on musl, we call the musl libc function instead. This is because
+        // on newer musl versions starting with musl 1.2, `timespec` is always a 64-bit
+        // value even on 32-bit targets. As a result, musl internally converts their
+        // `timespec` values to the correct ABI before invoking the syscall. Since we
+        // use `timespec` from the libc crate, it matches musl's definition and not
+        // the Linux kernel's version (for some platforms) so we must use musl's
+        // `utimensat` function to properly convert the value. musl's `utimensat`
+        // function allows file descriptors in the path argument so this is fine.
+        #[cfg(target_env = "musl")]
+        let rc = unsafe {
+            libc::utimensat(
+                f.as_raw_fd(),
+                ptr::null::<libc::c_char>(),
+                times.as_ptr(),
+                0,
+            )
+        };
+
+        if rc == 0 {
+            return Ok(());
+        }
+        let err = io::Error::last_os_error();
+        if err.raw_os_error() == Some(libc::ENOSYS) {
+            INVALID.store(true, SeqCst);
+        } else {
+            return Err(err);
+        }
+    }
+
+    super::utimes::set_file_handle_times(f, atime, mtime)
+}
+
+pub fn set_symlink_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), true)
+}
+
+fn set_times(
+    p: &Path,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+    symlink: bool,
+) -> io::Result<()> {
+    let flags = if symlink {
+        libc::AT_SYMLINK_NOFOLLOW
+    } else {
+        0
+    };
+
+    // Same as the `if` statement above.
+    static INVALID: AtomicBool = AtomicBool::new(false);
+    if !INVALID.load(SeqCst) {
+        let p = CString::new(p.as_os_str().as_bytes())?;
+        let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
+        let rc = unsafe { libc::utimensat(libc::AT_FDCWD, p.as_ptr(), times.as_ptr(), flags) };
+        if rc == 0 {
+            return Ok(());
+        }
+        let err = io::Error::last_os_error();
+        if err.raw_os_error() == Some(libc::ENOSYS) {
+            INVALID.store(true, SeqCst);
+        } else {
+            return Err(err);
+        }
+    }
+
+    super::utimes::set_times(p, atime, mtime, symlink)
+}

third-party/vendor/filetime/src/unix/macos.rs

@@ -0,0 +1,108 @@
+//! Beginning with macOS 10.13, `utimensat` is supported by the OS, so here, we check if the symbol exists
+//! and if not, we fallback to `utimes`.
+use crate::FileTime;
+use libc::{c_char, c_int, timespec};
+use std::ffi::{CStr, CString};
+use std::fs::File;
+use std::os::unix::prelude::*;
+use std::path::Path;
+use std::sync::atomic::AtomicUsize;
+use std::sync::atomic::Ordering::SeqCst;
+use std::{io, mem};
+
+pub fn set_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), false)
+}
+
+pub fn set_file_mtime(p: &Path, mtime: FileTime) -> io::Result<()> {
+    set_times(p, None, Some(mtime), false)
+}
+
+pub fn set_file_atime(p: &Path, atime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), None, false)
+}
+
+pub fn set_file_handle_times(
+    f: &File,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+) -> io::Result<()> {
+    // Attempt to use the `futimens` syscall, but if it's not supported by the
+    // current kernel then fall back to an older syscall.
+    if let Some(func) = futimens() {
+        let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
+        let rc = unsafe { func(f.as_raw_fd(), times.as_ptr()) };
+        if rc == 0 {
+            return Ok(());
+        } else {
+            return Err(io::Error::last_os_error());
+        }
+    }
+
+    super::utimes::set_file_handle_times(f, atime, mtime)
+}
+
+pub fn set_symlink_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), true)
+}
+
+fn set_times(
+    p: &Path,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+    symlink: bool,
+) -> io::Result<()> {
+    // Attempt to use the `utimensat` syscall, but if it's not supported by the
+    // current kernel then fall back to an older syscall.
+    if let Some(func) = utimensat() {
+        let flags = if symlink {
+            libc::AT_SYMLINK_NOFOLLOW
+        } else {
+            0
+        };
+
+        let p = CString::new(p.as_os_str().as_bytes())?;
+        let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
+        let rc = unsafe { func(libc::AT_FDCWD, p.as_ptr(), times.as_ptr(), flags) };
+        if rc == 0 {
+            return Ok(());
+        } else {
+            return Err(io::Error::last_os_error());
+        }
+    }
+
+    super::utimes::set_times(p, atime, mtime, symlink)
+}
+
+fn utimensat() -> Option<unsafe extern "C" fn(c_int, *const c_char, *const timespec, c_int) -> c_int>
+{
+    static ADDR: AtomicUsize = AtomicUsize::new(0);
+    unsafe {
+        fetch(&ADDR, CStr::from_bytes_with_nul_unchecked(b"utimensat\0"))
+            .map(|sym| mem::transmute(sym))
+    }
+}
+
+fn futimens() -> Option<unsafe extern "C" fn(c_int, *const timespec) -> c_int> {
+    static ADDR: AtomicUsize = AtomicUsize::new(0);
+    unsafe {
+        fetch(&ADDR, CStr::from_bytes_with_nul_unchecked(b"futimens\0"))
+            .map(|sym| mem::transmute(sym))
+    }
+}
+
+fn fetch(cache: &AtomicUsize, name: &CStr) -> Option<usize> {
+    match cache.load(SeqCst) {
+        0 => {}
+        1 => return None,
+        n => return Some(n),
+    }
+    let sym = unsafe { libc::dlsym(libc::RTLD_DEFAULT, name.as_ptr() as *const _) };
+    let (val, ret) = if sym.is_null() {
+        (1, None)
+    } else {
+        (sym as usize, Some(sym as usize))
+    };
+    cache.store(val, SeqCst);
+    return ret;
+}

third-party/vendor/filetime/src/unix/mod.rs

@@ -0,0 +1,101 @@
+use crate::FileTime;
+use libc::{time_t, timespec};
+use std::fs;
+use std::os::unix::prelude::*;
+
+cfg_if::cfg_if! {
+    if #[cfg(target_os = "linux")] {
+        mod utimes;
+        mod linux;
+        pub use self::linux::*;
+    } else if #[cfg(target_os = "android")] {
+        mod android;
+        pub use self::android::*;
+    } else if #[cfg(target_os = "macos")] {
+        mod utimes;
+        mod macos;
+        pub use self::macos::*;
+    } else if #[cfg(any(target_os = "aix",
+                        target_os = "solaris",
+                        target_os = "illumos",
+                        target_os = "emscripten",
+                        target_os = "freebsd",
+                        target_os = "netbsd",
+                        target_os = "openbsd",
+                        target_os = "haiku"))] {
+        mod utimensat;
+        pub use self::utimensat::*;
+    } else {
+        mod utimes;
+        pub use self::utimes::*;
+    }
+}
+
+#[allow(dead_code)]
+fn to_timespec(ft: &Option<FileTime>) -> timespec {
+    cfg_if::cfg_if! {
+        if #[cfg(any(target_os = "macos",
+                     target_os = "illumos",
+                     target_os = "freebsd"))] {
+            // https://github.com/apple/darwin-xnu/blob/a449c6a3b8014d9406c2ddbdc81795da24aa7443/bsd/sys/stat.h#L541
+            // https://github.com/illumos/illumos-gate/blob/master/usr/src/boot/sys/sys/stat.h#L312
+            // https://svnweb.freebsd.org/base/head/sys/sys/stat.h?view=markup#l359
+            const UTIME_OMIT: i64 = -2;
+        } else if #[cfg(target_os = "openbsd")] {
+            // https://github.com/openbsd/src/blob/master/sys/sys/stat.h#L189
+            const UTIME_OMIT: i64 = -1;
+        } else if #[cfg(target_os = "haiku")] {
+            // https://git.haiku-os.org/haiku/tree/headers/posix/sys/stat.h?#n106
+            const UTIME_OMIT: i64 = 1000000001;
+        } else if #[cfg(target_os = "aix")] {
+            // AIX hasn't disclosed system header files yet.
+            // https://github.com/golang/go/blob/master/src/cmd/vendor/golang.org/x/sys/unix/zerrors_aix_ppc64.go#L1007
+            const UTIME_OMIT: i64 = -3;
+        } else {
+            // http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/sys/stat.h?annotate=1.68.30.1
+            // https://github.com/emscripten-core/emscripten/blob/master/system/include/libc/sys/stat.h#L71
+            const UTIME_OMIT: i64 = 1_073_741_822;
+        }
+    }
+
+    let mut ts: timespec = unsafe { std::mem::zeroed() };
+    if let &Some(ft) = ft {
+        ts.tv_sec = ft.seconds() as time_t;
+        ts.tv_nsec = ft.nanoseconds() as _;
+    } else {
+        ts.tv_sec = 0;
+        ts.tv_nsec = UTIME_OMIT as _;
+    }
+
+    ts
+}
+
+pub fn from_last_modification_time(meta: &fs::Metadata) -> FileTime {
+    FileTime {
+        seconds: meta.mtime(),
+        nanos: meta.mtime_nsec() as u32,
+    }
+}
+
+pub fn from_last_access_time(meta: &fs::Metadata) -> FileTime {
+    FileTime {
+        seconds: meta.atime(),
+        nanos: meta.atime_nsec() as u32,
+    }
+}
+
+pub fn from_creation_time(meta: &fs::Metadata) -> Option<FileTime> {
+    #[cfg(target_os = "bitrig")]
+    {
+        use std::os::bitrig::fs::MetadataExt;
+        Some(FileTime {
+            seconds: meta.st_birthtime(),
+            nanos: meta.st_birthtime_nsec() as u32,
+        })
+    }
+
+    #[cfg(not(target_os = "bitrig"))]
+    {
+        meta.created().map(|i| i.into()).ok()
+    }
+}

third-party/vendor/filetime/src/unix/utimensat.rs

@@ -0,0 +1,64 @@
+use crate::FileTime;
+use std::ffi::CString;
+use std::fs::File;
+use std::io;
+use std::os::unix::prelude::*;
+use std::path::Path;
+
+pub fn set_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), false)
+}
+
+pub fn set_file_mtime(p: &Path, mtime: FileTime) -> io::Result<()> {
+    set_times(p, None, Some(mtime), false)
+}
+
+pub fn set_file_atime(p: &Path, atime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), None, false)
+}
+
+pub fn set_file_handle_times(
+    f: &File,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+) -> io::Result<()> {
+    let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
+    let rc = unsafe { libc::futimens(f.as_raw_fd(), times.as_ptr()) };
+    if rc == 0 {
+        Ok(())
+    } else {
+        Err(io::Error::last_os_error())
+    }
+}
+
+pub fn set_symlink_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), true)
+}
+
+fn set_times(
+    p: &Path,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+    symlink: bool,
+) -> io::Result<()> {
+    let flags = if symlink {
+        if cfg!(target_os = "emscripten") {
+            return Err(io::Error::new(
+                io::ErrorKind::Other,
+                "emscripten does not support utimensat for symlinks",
+            ));
+        }
+        libc::AT_SYMLINK_NOFOLLOW
+    } else {
+        0
+    };
+
+    let p = CString::new(p.as_os_str().as_bytes())?;
+    let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
+    let rc = unsafe { libc::utimensat(libc::AT_FDCWD, p.as_ptr(), times.as_ptr(), flags) };
+    if rc == 0 {
+        Ok(())
+    } else {
+        Err(io::Error::last_os_error())
+    }
+}

third-party/vendor/filetime/src/unix/utimes.rs

@@ -0,0 +1,130 @@
+use crate::FileTime;
+use std::ffi::CString;
+use std::fs;
+use std::io;
+use std::os::unix::prelude::*;
+use std::path::Path;
+
+#[allow(dead_code)]
+pub fn set_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), false)
+}
+
+#[allow(dead_code)]
+pub fn set_file_mtime(p: &Path, mtime: FileTime) -> io::Result<()> {
+    set_times(p, None, Some(mtime), false)
+}
+
+#[allow(dead_code)]
+pub fn set_file_atime(p: &Path, atime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), None, false)
+}
+
+#[cfg(not(target_env = "uclibc"))]
+#[allow(dead_code)]
+pub fn set_file_handle_times(
+    f: &fs::File,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+) -> io::Result<()> {
+    let (atime, mtime) = match get_times(atime, mtime, || f.metadata())? {
+        Some(pair) => pair,
+        None => return Ok(()),
+    };
+    let times = [to_timeval(&atime), to_timeval(&mtime)];
+    let rc = unsafe { libc::futimes(f.as_raw_fd(), times.as_ptr()) };
+    return if rc == 0 {
+        Ok(())
+    } else {
+        Err(io::Error::last_os_error())
+    };
+}
+
+#[cfg(target_env = "uclibc")]
+#[allow(dead_code)]
+pub fn set_file_handle_times(
+    f: &fs::File,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+) -> io::Result<()> {
+    let (atime, mtime) = match get_times(atime, mtime, || f.metadata())? {
+        Some(pair) => pair,
+        None => return Ok(()),
+    };
+    let times = [to_timespec(&atime), to_timespec(&mtime)];
+    let rc = unsafe { libc::futimens(f.as_raw_fd(), times.as_ptr()) };
+    return if rc == 0 {
+        Ok(())
+    } else {
+        Err(io::Error::last_os_error())
+    };
+}
+
+fn get_times(
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+    current: impl FnOnce() -> io::Result<fs::Metadata>,
+) -> io::Result<Option<(FileTime, FileTime)>> {
+    let pair = match (atime, mtime) {
+        (Some(a), Some(b)) => (a, b),
+        (None, None) => return Ok(None),
+        (Some(a), None) => {
+            let meta = current()?;
+            (a, FileTime::from_last_modification_time(&meta))
+        }
+        (None, Some(b)) => {
+            let meta = current()?;
+            (FileTime::from_last_access_time(&meta), b)
+        }
+    };
+    Ok(Some(pair))
+}
+
+#[allow(dead_code)]
+pub fn set_symlink_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
+    set_times(p, Some(atime), Some(mtime), true)
+}
+
+pub fn set_times(
+    p: &Path,
+    atime: Option<FileTime>,
+    mtime: Option<FileTime>,
+    symlink: bool,
+) -> io::Result<()> {
+    let (atime, mtime) = match get_times(atime, mtime, || p.metadata())? {
+        Some(pair) => pair,
+        None => return Ok(()),
+    };
+    let p = CString::new(p.as_os_str().as_bytes())?;
+    let times = [to_timeval(&atime), to_timeval(&mtime)];
+    let rc = unsafe {
+        if symlink {
+            libc::lutimes(p.as_ptr(), times.as_ptr())
+        } else {
+            libc::utimes(p.as_ptr(), times.as_ptr())
+        }
+    };
+    return if rc == 0 {
+        Ok(())
+    } else {
+        Err(io::Error::last_os_error())
+    };
+}
+
+fn to_timeval(ft: &FileTime) -> libc::timeval {
+    libc::timeval {
+        tv_sec: ft.seconds() as libc::time_t,
+        tv_usec: (ft.nanoseconds() / 1000) as libc::suseconds_t,
+    }
+}
+
+#[cfg(target_env = "uclibc")]
+fn to_timespec(ft: &FileTime) -> libc::timespec {
+    libc::timespec {
+        tv_sec: ft.seconds() as libc::time_t,
+        #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
+        tv_nsec: (ft.nanoseconds()) as i64,
+        #[cfg(not(all(target_arch = "x86_64", target_pointer_width = "32")))]
+        tv_nsec: (ft.nanoseconds()) as libc::c_long,
+    }
+}