replace nix getgroups by rustix (#12269)

tests/by-util/test_chgrp.rs

@@ -4,6 +4,8 @@
 // file that was distributed with this source code.
 // spell-checker:ignore (words) nosuchgroup groupname
 
+#[cfg(not(target_vendor = "apple"))]
+use rustix::process::getgroups;
 #[cfg(target_os = "linux")]
 use std::os::unix::ffi::OsStringExt;
 use uucore::process::getegid;
@@ -299,9 +301,8 @@ fn test_big_h() {
 #[cfg(not(target_vendor = "apple"))]
 fn basic_succeeds() {
     let (at, mut ucmd) = at_and_ucmd!();
-    let one_group = nix::unistd::getgroups().unwrap();
     // if there are no groups we can't run this test.
-    if let Some(group) = one_group.first() {
+    if let Some(group) = getgroups().unwrap().first() {
         at.touch("f1");
         ucmd.arg(group.as_raw().to_string())
             .arg("f1")
@@ -322,7 +323,7 @@ fn test_no_change() {
 fn test_permission_denied() {
     use std::os::unix::prelude::PermissionsExt;
 
-    if let Some(group) = nix::unistd::getgroups().unwrap().first() {
+    if let Some(group) = getgroups().unwrap().first() {
         let (at, mut ucmd) = at_and_ucmd!();
         at.mkdir("dir");
         at.touch("dir/file");
@@ -340,7 +341,7 @@ fn test_permission_denied() {
 fn test_subdir_permission_denied() {
     use std::os::unix::prelude::PermissionsExt;
 
-    if let Some(group) = nix::unistd::getgroups().unwrap().first() {
+    if let Some(group) = getgroups().unwrap().first() {
         let (at, mut ucmd) = at_and_ucmd!();
         at.mkdir("dir");
         at.mkdir("dir/subdir");
@@ -358,7 +359,7 @@ fn test_subdir_permission_denied() {
 #[cfg(not(target_vendor = "apple"))]
 fn test_traverse_symlinks() {
     use std::os::unix::prelude::MetadataExt;
-    let groups = nix::unistd::getgroups().unwrap();
+    let groups = getgroups().unwrap();
     if groups.len() < 2 {
         return;
     }
@@ -431,7 +432,7 @@ fn test_from_option() {
     use std::os::unix::fs::MetadataExt;
     let scene = TestScenario::new(util_name!());
     let at = &scene.fixtures;
-    let groups = nix::unistd::getgroups().unwrap();
+    let groups = getgroups().unwrap();
     // Skip test if we don't have at least two different groups to work with
     if groups.len() < 2 {
         return;
@@ -495,7 +496,7 @@ fn test_from_with_invalid_group() {
 fn test_verbosity_messages() {
     let scene = TestScenario::new(util_name!());
     let at = &scene.fixtures;
-    let groups = nix::unistd::getgroups().unwrap();
+    let groups = getgroups().unwrap();
     // Skip test if we don't have at least one group to work with
     if groups.is_empty() {
         return;
@@ -519,7 +520,7 @@ fn test_from_with_reference() {
     use std::os::unix::fs::MetadataExt;
     let scene = TestScenario::new(util_name!());
     let at = &scene.fixtures;
-    let groups = nix::unistd::getgroups().unwrap();
+    let groups = getgroups().unwrap();
     if groups.len() < 2 {
         return;
     }
@@ -562,7 +563,7 @@ fn test_numeric_group_formats() {
     let scene = TestScenario::new(util_name!());
     let at = &scene.fixtures;
 
-    let groups = nix::unistd::getgroups().unwrap();
+    let groups = getgroups().unwrap();
     if groups.len() < 2 {
         return;
     }

tests/by-util/test_cp.rs

@@ -3336,7 +3336,7 @@ fn test_cp_socket() {
 #[cfg(all(unix, not(target_vendor = "apple")))]
 fn find_other_group(current: u32) -> Option<u32> {
     // Get the first group that doesn't match current
-    nix::unistd::getgroups().ok()?.iter().find_map(|group| {
+    rustix::process::getgroups().ok()?.iter().find_map(|group| {
         let gid = group.as_raw();
         (gid != current).then_some(gid)
     })

tests/by-util/test_mv.rs

@@ -2988,7 +2988,7 @@ fn test_mv_cross_device_file_symlink_preserved() {
 /// Non-root users can chgrp to any group they belong to.
 #[cfg(target_os = "linux")]
 fn find_other_group(current: u32) -> Option<u32> {
-    nix::unistd::getgroups().ok()?.iter().find_map(|group| {
+    rustix::process::getgroups().ok()?.iter().find_map(|group| {
         let gid = group.as_raw();
         (gid != current).then_some(gid)
     })