Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 115 insertions, 0 deletions

diff --git a/vendor/rustix/src/thread/id.rs b/vendor/rustix/src/thread/id.rs
new file mode 100644
index 0000000..11193c9
--- /dev/null
+++ b/vendor/rustix/src/thread/id.rs
@@ -0,0 +1,115 @@
+use crate::{backend, io};
+
+pub use crate::pid::{Pid, RawPid};
+pub use crate::ugid::{Gid, RawGid, RawUid, Uid};
+
+/// `gettid()`—Returns the thread ID.
+///
+/// This returns the OS thread ID, which is not necessarily the same as the
+/// `rust::thread::Thread::id` or the pthread ID.
+///
+/// # References
+///  - [Linux]
+///
+/// [Linux]: https://man7.org/linux/man-pages/man2/gettid.2.html
+#[inline]
+#[must_use]
+pub fn gettid() -> Pid {
+    backend::thread::syscalls::gettid()
+}
+
+/// `setuid(uid)`
+///
+/// # Warning
+///
+/// This is not the setxid you are looking for… POSIX requires xids to be
+/// process granular, but on Linux they are per-thread. Thus, this call only
+/// changes the xid for the current *thread*, not the entire process even
+/// though that is in violation of the POSIX standard.
+///
+/// For details on this distinction, see the C library vs. kernel differences
+/// in the [manual page][linux_notes]. This call implements the kernel
+/// behavior.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/setuid.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/setuid.2.html
+/// [linux_notes]: https://man7.org/linux/man-pages/man2/setuid.2.html#NOTES
+#[inline]
+pub fn set_thread_uid(uid: Uid) -> io::Result<()> {
+    backend::thread::syscalls::setuid_thread(uid)
+}
+
+/// `setresuid(ruid, euid, suid)`
+///
+/// # Warning
+///
+/// This is not the setresxid you are looking for… POSIX requires xids to be
+/// process granular, but on Linux they are per-thread. Thus, this call only
+/// changes the xid for the current *thread*, not the entire process even
+/// though that is in violation of the POSIX standard.
+///
+/// For details on this distinction, see the C library vs. kernel differences
+/// in the [manual page][linux_notes] and the notes in [`set_thread_uid`]. This
+/// call implements the kernel behavior.
+///
+/// # References
+///  - [Linux]
+///
+/// [Linux]: https://man7.org/linux/man-pages/man2/setresuid.2.html
+/// [linux_notes]: https://man7.org/linux/man-pages/man2/setresuid.2.html#NOTES
+#[inline]
+pub fn set_thread_res_uid(ruid: Uid, euid: Uid, suid: Uid) -> io::Result<()> {
+    backend::thread::syscalls::setresuid_thread(ruid, euid, suid)
+}
+
+/// `setgid(gid)`
+///
+/// # Warning
+///
+/// This is not the setxid you are looking for… POSIX requires xids to be
+/// process granular, but on Linux they are per-thread. Thus, this call only
+/// changes the xid for the current *thread*, not the entire process even
+/// though that is in violation of the POSIX standard.
+///
+/// For details on this distinction, see the C library vs. kernel differences
+/// in the [manual page][linux_notes]. This call implements the kernel
+/// behavior.
+///
+/// # References
+///  - [POSIX]
+///  - [Linux]
+///
+/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/setgid.html
+/// [Linux]: https://man7.org/linux/man-pages/man2/setgid.2.html
+/// [linux_notes]: https://man7.org/linux/man-pages/man2/setgid.2.html#NOTES
+#[inline]
+pub fn set_thread_gid(gid: Gid) -> io::Result<()> {
+    backend::thread::syscalls::setgid_thread(gid)
+}
+
+/// `setresgid(rgid, egid, sgid)`
+///
+/// # Warning
+///
+/// This is not the setresxid you are looking for… POSIX requires xids to be
+/// process granular, but on Linux they are per-thread. Thus, this call only
+/// changes the xid for the current *thread*, not the entire process even
+/// though that is in violation of the POSIX standard.
+///
+/// For details on this distinction, see the C library vs. kernel differences
+/// in the [manual page][linux_notes] and the notes in [`set_thread_gid`]. This
+/// call implements the kernel behavior.
+///
+/// # References
+///  - [Linux]
+///
+/// [Linux]: https://man7.org/linux/man-pages/man2/setresgid.2.html
+/// [linux_notes]: https://man7.org/linux/man-pages/man2/setresgid.2.html#NOTES
+#[inline]
+pub fn set_thread_res_gid(rgid: Gid, egid: Gid, sgid: Gid) -> io::Result<()> {
+    backend::thread::syscalls::setresgid_thread(rgid, egid, sgid)
+}