From b430cd62e40afd30048a4d9992ec62bb34f5e041 Mon Sep 17 00:00:00 2001
From: GasInfinity <me@gasinfinity.dev>
Date: Sat, 24 Jan 2026 16:00:16 +0100
Subject: [PATCH] feat(std.os.linux): add some missing syscalls

---
 lib/std/os/linux.zig | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index 22a5b4299908cb2f6c9b5599a5d5f332c05ce01e..f5868f71e9af718e2464e03a9e241f95f104ae89 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -1391,6 +1391,10 @@ pub fn faccessat(dirfd: i32, path: [*:0]const u8, mode: u32, flags: u32) usize {
     return syscall4(.faccessat2, @as(usize, @bitCast(@as(isize, dirfd))), @intFromPtr(path), mode, flags);
 }
 
+pub fn acct(path: [*:0]const u8) usize {
+    return syscall1(.acct, @intFromPtr(path));
+}
+
 pub fn pipe(fd: *[2]i32) usize {
     if (comptime (native_arch.isMIPS() or native_arch.isSPARC())) {
         return syscall_pipe(fd);
@@ -1601,11 +1605,27 @@ pub fn fchown(fd: i32, owner: uid_t, group: gid_t) usize {
     }
 }
 
+pub fn fchownat(fd: i32, path: [*:0]const u8, owner: uid_t, group: gid_t, flags: u32) usize {
+    return syscall5(.fchownat, @as(usize, @bitCast(@as(isize, fd))), @intFromPtr(path), owner, group, flags);
+}
+
 pub fn chown(path: [*:0]const u8, owner: uid_t, group: gid_t) usize {
     if (@hasField(SYS, "chown32")) {
         return syscall3(.chown32, @intFromPtr(path), owner, group);
-    } else {
+    } else if (@hasField(SYS, "chown")) {
         return syscall3(.chown, @intFromPtr(path), owner, group);
+    } else {
+        return fchownat(AT.FDCWD, path, owner, group, 0);
+    }
+}
+
+pub fn lchown(path: [*:0]const u8, owner: uid_t, group: gid_t) usize {
+    if (@hasField(SYS, "lchown32")) {
+        return syscall3(.lchown32, @intFromPtr(path), owner, group);
+    } else if (@hasField(SYS, "lchown")) {
+        return syscall3(.lchown, @intFromPtr(path), owner, group);
+    } else {
+        return fchownat(AT.FDCWD, path, owner, group, AT.SYMLINK_NOFOLLOW);
     }
 }
 
@@ -2064,7 +2084,11 @@ pub fn setpgid(pid: pid_t, pgid: pid_t) usize {
     return syscall2(.setpgid, @intCast(pid), @intCast(pgid));
 }
 
-pub fn getgroups(size: usize, list: ?*gid_t) usize {
+pub fn getpgid(pid: pid_t) usize {
+    return syscall1(.getpgid, @intCast(pid));
+}
+
+pub fn getgroups(size: usize, list: ?[*]gid_t) usize {
     if (@hasField(SYS, "getgroups32")) {
         return syscall2(.getgroups32, size, @intFromPtr(list));
     } else {
@@ -2084,6 +2108,10 @@ pub fn setsid() usize {
     return syscall0(.setsid);
 }
 
+pub fn getsid(pid: pid_t) usize {
+    return syscall1(.getsid, @intCast(pid));
+}
+
 pub fn getpid() pid_t {
     // Casts result to a pid_t, safety-checking >= 0, because getpid() cannot fail
     return @intCast(@as(u32, @truncate(syscall0(.getpid))));
-- 
2.54.0