Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 430 insertions, 0 deletions

diff --git a/tests/ui/command/command-argv0.rs b/tests/ui/command/command-argv0.rs
new file mode 100644
index 000000000..b782a4fd3
--- /dev/null
+++ b/tests/ui/command/command-argv0.rs
@@ -0,0 +1,30 @@
+// run-pass
+
+// ignore-windows - this is a unix-specific test
+// ignore-emscripten no processes
+// ignore-sgx no processes
+use std::env;
+use std::os::unix::process::CommandExt;
+use std::process::Command;
+
+fn main() {
+    let args: Vec<_> = env::args().collect();
+
+    if args.len() > 1 {
+        assert_eq!(args[1], "doing-test");
+        assert_eq!(args[0], "i have a silly name");
+
+        println!("passed");
+        return;
+    }
+
+    let output =
+        Command::new(&args[0]).arg("doing-test").arg0("i have a silly name").output().unwrap();
+    assert!(
+        output.stderr.is_empty(),
+        "Non-empty stderr: {}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+    assert!(output.status.success());
+    assert_eq!(output.stdout, b"passed\n");
+}
diff --git a/tests/ui/command/command-create-pidfd.rs b/tests/ui/command/command-create-pidfd.rs
new file mode 100644
index 000000000..4df443c66
--- /dev/null
+++ b/tests/ui/command/command-create-pidfd.rs
@@ -0,0 +1,56 @@
+// run-pass
+// only-linux - pidfds are a linux-specific concept
+
+#![feature(linux_pidfd)]
+#![feature(rustc_private)]
+
+extern crate libc;
+
+use std::io::Error;
+use std::os::linux::process::{ChildExt, CommandExt};
+use std::process::Command;
+
+fn has_clone3() -> bool {
+    let res = unsafe { libc::syscall(libc::SYS_clone3, 0, 0) };
+    let err = (res == -1)
+        .then(|| Error::last_os_error())
+        .expect("probe syscall should not succeed");
+
+    // If the `clone3` syscall is not implemented in the current kernel version it should return an
+    // `ENOSYS` error. Docker also blocks the whole syscall inside unprivileged containers, and
+    // returns `EPERM` (instead of `ENOSYS`) when a program tries to invoke the syscall. Because of
+    // that we need to check for *both* `ENOSYS` and `EPERM`.
+    //
+    // Note that Docker's behavior is breaking other projects (notably glibc), so they're planning
+    // to update their filtering to return `ENOSYS` in a future release:
+    //
+    //     https://github.com/moby/moby/issues/42680
+    //
+    err.raw_os_error() != Some(libc::ENOSYS) && err.raw_os_error() != Some(libc::EPERM)
+}
+
+fn main() {
+    // pidfds require the clone3 syscall
+    if !has_clone3() {
+        return;
+    }
+
+    // We don't assert the precise value, since the standard library
+    // might have opened other file descriptors before our code runs.
+    let _ = Command::new("echo")
+        .create_pidfd(true)
+        .spawn()
+        .unwrap()
+        .pidfd().expect("failed to obtain pidfd");
+
+    let _ = Command::new("echo")
+        .create_pidfd(false)
+        .spawn()
+        .unwrap()
+        .pidfd().expect_err("pidfd should not have been created when create_pid(false) is set");
+
+    let _ = Command::new("echo")
+        .spawn()
+        .unwrap()
+        .pidfd().expect_err("pidfd should not have been created");
+}
diff --git a/tests/ui/command/command-current-dir.rs b/tests/ui/command/command-current-dir.rs
new file mode 100644
index 000000000..5d06fcdeb
--- /dev/null
+++ b/tests/ui/command/command-current-dir.rs
@@ -0,0 +1,50 @@
+// run-pass
+// ignore-emscripten no processes
+// ignore-sgx no processes
+// ignore-fuchsia Needs directory creation privilege
+
+use std::env;
+use std::fs;
+use std::path::Path;
+use std::process::Command;
+
+fn main() {
+    // Checks the behavior of current_dir when used with a relative exe path.
+    let me = env::current_exe().unwrap();
+    if matches!(env::args().skip(1).next().as_deref(), Some("current-dir")) {
+        let cwd = env::current_dir().unwrap();
+        assert_eq!(cwd.file_name().unwrap(), "bar");
+        std::process::exit(0);
+    }
+    let exe = me.file_name().unwrap();
+    let cwd = me.parent().unwrap();
+    eprintln!("cwd={:?}", cwd);
+    // Change directory to where the executable is located, since this test
+    // fundamentally needs to use relative paths. In some cases (like
+    // remote-test-server), the current_dir can be somewhere else, so make
+    // sure it is something we can use. We assume we can write to this
+    // directory.
+    env::set_current_dir(&cwd).unwrap();
+    let foo = cwd.join("foo");
+    let bar = cwd.join("bar");
+    fs::create_dir_all(&foo).unwrap();
+    fs::create_dir_all(&bar).unwrap();
+    fs::copy(&me, foo.join(exe)).unwrap();
+
+    // Unfortunately this is inconsistent based on the platform, see
+    // https://github.com/rust-lang/rust/issues/37868. On Windows,
+    // it is relative *before* changing the directory, and on Unix
+    // it is *after* changing the directory.
+    let relative_exe = if cfg!(windows) {
+        Path::new("foo").join(exe)
+    } else {
+        Path::new("../foo").join(exe)
+    };
+
+    let status = Command::new(relative_exe)
+        .arg("current-dir")
+        .current_dir("bar")
+        .status()
+        .unwrap();
+    assert!(status.success());
+}
diff --git a/tests/ui/command/command-exec.rs b/tests/ui/command/command-exec.rs
new file mode 100644
index 000000000..032dad184
--- /dev/null
+++ b/tests/ui/command/command-exec.rs
@@ -0,0 +1,104 @@
+// run-pass
+
+#![allow(stable_features)]
+// ignore-windows - this is a unix-specific test
+// ignore-pretty issue #37199
+// ignore-emscripten no processes
+// ignore-sgx no processes
+// ignore-fuchsia no execvp syscall provided
+
+#![feature(process_exec)]
+
+use std::env;
+use std::os::unix::process::CommandExt;
+use std::process::Command;
+
+fn main() {
+    let mut args = env::args();
+    let me = args.next().unwrap();
+
+    if let Some(arg) = args.next() {
+        match &arg[..] {
+            "test1" => println!("passed"),
+
+            "exec-test1" => {
+                let err = Command::new(&me).arg("test1").exec();
+                panic!("failed to spawn: {}", err);
+            }
+
+            "exec-test2" => {
+                Command::new("/path/to/nowhere").exec();
+                println!("passed");
+            }
+
+            "exec-test3" => {
+                Command::new(&me).arg("bad\0").exec();
+                println!("passed");
+            }
+
+            "exec-test4" => {
+                Command::new(&me).current_dir("/path/to/nowhere").exec();
+                println!("passed");
+            }
+
+            "exec-test5" => {
+                env::set_var("VARIABLE", "ABC");
+                Command::new("definitely-not-a-real-binary").env("VARIABLE", "XYZ").exec();
+                assert_eq!(env::var("VARIABLE").unwrap(), "ABC");
+                println!("passed");
+            }
+
+            "exec-test6" => {
+                let err = Command::new("echo").arg("passed").env_clear().exec();
+                panic!("failed to spawn: {}", err);
+            }
+
+            "exec-test7" => {
+                let err = Command::new("echo").arg("passed").env_remove("PATH").exec();
+                panic!("failed to spawn: {}", err);
+            }
+
+            _ => panic!("unknown argument: {}", arg),
+        }
+        return
+    }
+
+    let output = Command::new(&me).arg("exec-test1").output().unwrap();
+    assert!(output.status.success());
+    assert!(output.stderr.is_empty());
+    assert_eq!(output.stdout, b"passed\n");
+
+    let output = Command::new(&me).arg("exec-test2").output().unwrap();
+    assert!(output.status.success());
+    assert!(output.stderr.is_empty());
+    assert_eq!(output.stdout, b"passed\n");
+
+    let output = Command::new(&me).arg("exec-test3").output().unwrap();
+    assert!(output.status.success());
+    assert!(output.stderr.is_empty());
+    assert_eq!(output.stdout, b"passed\n");
+
+    let output = Command::new(&me).arg("exec-test4").output().unwrap();
+    assert!(output.status.success());
+    assert!(output.stderr.is_empty());
+    assert_eq!(output.stdout, b"passed\n");
+
+    let output = Command::new(&me).arg("exec-test5").output().unwrap();
+    assert!(output.status.success());
+    assert!(output.stderr.is_empty());
+    assert_eq!(output.stdout, b"passed\n");
+
+    if cfg!(target_os = "linux") {
+        let output = Command::new(&me).arg("exec-test6").output().unwrap();
+        println!("{:?}", output);
+        assert!(output.status.success());
+        assert!(output.stderr.is_empty());
+        assert_eq!(output.stdout, b"passed\n");
+
+        let output = Command::new(&me).arg("exec-test7").output().unwrap();
+        println!("{:?}", output);
+        assert!(output.status.success());
+        assert!(output.stderr.is_empty());
+        assert_eq!(output.stdout, b"passed\n");
+    }
+}
diff --git a/tests/ui/command/command-pre-exec.rs b/tests/ui/command/command-pre-exec.rs
new file mode 100644
index 000000000..d366c5ffb
--- /dev/null
+++ b/tests/ui/command/command-pre-exec.rs
@@ -0,0 +1,106 @@
+// run-pass
+// revisions: mir thir
+// [thir]compile-flags: -Zthir-unsafeck
+
+#![allow(stable_features)]
+// ignore-windows - this is a unix-specific test
+// ignore-emscripten no processes
+// ignore-sgx no processes
+// ignore-fuchsia no execvp syscall
+#![feature(process_exec, rustc_private)]
+
+extern crate libc;
+
+use std::env;
+use std::io::Error;
+use std::os::unix::process::CommandExt;
+use std::process::Command;
+use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::Arc;
+
+fn main() {
+    if let Some(arg) = env::args().nth(1) {
+        match &arg[..] {
+            "test1" => println!("hello2"),
+            "test2" => assert_eq!(env::var("FOO").unwrap(), "BAR"),
+            "test3" => assert_eq!(env::current_dir().unwrap().to_str().unwrap(), "/"),
+            "empty" => {}
+            _ => panic!("unknown argument: {}", arg),
+        }
+        return;
+    }
+
+    let me = env::current_exe().unwrap();
+
+    let output = unsafe {
+        Command::new(&me)
+            .arg("test1")
+            .pre_exec(|| {
+                println!("hello");
+                Ok(())
+            })
+            .output()
+            .unwrap()
+    };
+    assert!(output.status.success());
+    assert!(output.stderr.is_empty());
+    assert_eq!(output.stdout, b"hello\nhello2\n");
+
+    let output = unsafe {
+        Command::new(&me)
+            .arg("test3")
+            .pre_exec(|| {
+                env::set_current_dir("/").unwrap();
+                Ok(())
+            })
+            .output()
+            .unwrap()
+    };
+    assert!(output.status.success());
+    assert!(output.stderr.is_empty());
+    assert!(output.stdout.is_empty());
+
+    let output = unsafe {
+        Command::new(&me)
+            .arg("bad")
+            .pre_exec(|| Err(Error::from_raw_os_error(102)))
+            .output()
+            .unwrap_err()
+    };
+    assert_eq!(output.raw_os_error(), Some(102));
+
+    let pid = unsafe { libc::getpid() };
+    assert!(pid >= 0);
+    let output = unsafe {
+        Command::new(&me)
+            .arg("empty")
+            .pre_exec(move || {
+                let child = libc::getpid();
+                assert!(child >= 0);
+                assert!(pid != child);
+                Ok(())
+            })
+            .output()
+            .unwrap()
+    };
+    assert!(output.status.success());
+    assert!(output.stderr.is_empty());
+    assert!(output.stdout.is_empty());
+
+    let mem = Arc::new(AtomicUsize::new(0));
+    let mem2 = mem.clone();
+    let output = unsafe {
+        Command::new(&me)
+            .arg("empty")
+            .pre_exec(move || {
+                assert_eq!(mem2.fetch_add(1, Ordering::SeqCst), 0);
+                Ok(())
+            })
+            .output()
+            .unwrap()
+    };
+    assert!(output.status.success());
+    assert!(output.stderr.is_empty());
+    assert!(output.stdout.is_empty());
+    assert_eq!(mem.load(Ordering::SeqCst), 0);
+}
diff --git a/tests/ui/command/command-setgroups.rs b/tests/ui/command/command-setgroups.rs
new file mode 100644
index 000000000..aff67f91b
--- /dev/null
+++ b/tests/ui/command/command-setgroups.rs
@@ -0,0 +1,26 @@
+// run-pass
+// ignore-windows - this is a unix-specific test
+// ignore-emscripten
+// ignore-sgx
+// ignore-musl - returns dummy result for _SC_NGROUPS_MAX
+
+#![feature(rustc_private)]
+#![feature(setgroups)]
+
+extern crate libc;
+use std::process::Command;
+use std::os::unix::process::CommandExt;
+
+fn main() {
+    #[cfg(unix)]
+    run()
+}
+
+#[cfg(unix)]
+fn run() {
+    let max_ngroups = unsafe { libc::sysconf(libc::_SC_NGROUPS_MAX) };
+    let max_ngroups = max_ngroups as u32 + 1;
+    let vec: Vec<u32> = (0..max_ngroups).collect();
+    let p = Command::new("/bin/id").groups(&vec[..]).spawn();
+    assert!(p.is_err());
+}
diff --git a/tests/ui/command/command-uid-gid.rs b/tests/ui/command/command-uid-gid.rs
new file mode 100644
index 000000000..aa4e2f5b8
--- /dev/null
+++ b/tests/ui/command/command-uid-gid.rs
@@ -0,0 +1,32 @@
+// run-pass
+// ignore-android
+// ignore-emscripten
+// ignore-sgx
+// ignore-fuchsia no '/bin/sh', '/bin/ls'
+
+#![feature(rustc_private)]
+
+fn main() {
+    #[cfg(unix)]
+    run()
+}
+
+#[cfg(unix)]
+fn run() {
+    extern crate libc;
+    use std::process::Command;
+    use std::os::unix::prelude::*;
+
+    let mut p = Command::new("/bin/sh")
+        .arg("-c").arg("true")
+        .uid(unsafe { libc::getuid() })
+        .gid(unsafe { libc::getgid() })
+        .spawn().unwrap();
+    assert!(p.wait().unwrap().success());
+
+    // if we're already root, this isn't a valid test. Most of the bots run
+    // as non-root though (android is an exception).
+    if unsafe { libc::getuid() != 0 } {
+        assert!(Command::new("/bin/ls").uid(0).gid(0).spawn().is_err());
+    }
+}
diff --git a/tests/ui/command/issue-10626.rs b/tests/ui/command/issue-10626.rs
new file mode 100644
index 000000000..696a2dd16
--- /dev/null
+++ b/tests/ui/command/issue-10626.rs
@@ -0,0 +1,26 @@
+// run-pass
+// ignore-emscripten no processes
+// ignore-sgx no processes
+
+// Make sure that if a process doesn't have its stdio/stderr descriptors set up
+// that we don't die in a large ball of fire
+
+use std::env;
+use std::process::{Command, Stdio};
+
+pub fn main () {
+    let args: Vec<String> = env::args().collect();
+    if args.len() > 1 && args[1] == "child" {
+        for _ in 0..1000 {
+            println!("hello?");
+        }
+        for _ in 0..1000 {
+            println!("hello?");
+        }
+        return;
+    }
+
+    let mut p = Command::new(&args[0]);
+    p.arg("child").stdout(Stdio::null()).stderr(Stdio::null());
+    println!("{:?}", p.spawn().unwrap().wait());
+}