Vendor things

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,
+    }
+}