Add rustfmt from relibc and apply it with cargo fmt

src/syscall/privilege.rs

@@ -1,11 +1,15 @@
 use alloc::vec::Vec;
 
-use crate::context;
-use crate::scheme::{self, SchemeNamespace};
-use crate::syscall::error::*;
+use crate::{
+    context,
+    scheme::{self, SchemeNamespace},
+    syscall::error::*,
+};
 
-use super::copy_path_to_buf;
-use super::usercopy::{UserSlice, UserSliceRo};
+use super::{
+    copy_path_to_buf,
+    usercopy::{UserSlice, UserSliceRo},
+};
 
 pub fn getegid() -> Result<usize> {
     let contexts = context::contexts();
@@ -61,7 +65,9 @@ pub fn mkns(mut user_buf: UserSliceRo) -> Result<usize> {
 
     let mut names = Vec::with_capacity(user_buf.len() / core::mem::size_of::<[usize; 2]>());
 
-    while let Some((current_name_ptr_buf, next_part)) = user_buf.split_at(core::mem::size_of::<[usize; 2]>()) {
+    while let Some((current_name_ptr_buf, next_part)) =
+        user_buf.split_at(core::mem::size_of::<[usize; 2]>())
+    {
         let mut iter = current_name_ptr_buf.usizes();
         let ptr = iter.next().ok_or(Error::new(EINVAL))??;
         let len = iter.next().ok_or(Error::new(EINVAL))??;
@@ -85,41 +91,39 @@ pub fn setregid(rgid: u32, egid: u32) -> Result<usize> {
     let context_lock = contexts.current().ok_or(Error::new(ESRCH))?;
     let mut context = context_lock.write();
 
-    let setrgid =
-        if context.euid == 0 {
-            // Allow changing RGID if root
-            true
-        } else if rgid == context.egid {
-            // Allow changing RGID if used for EGID
-            true
-        } else if rgid == context.rgid {
-            // Allow changing RGID if used for RGID
-            true
-        } else if rgid as i32 == -1 {
-            // Ignore RGID if -1 is passed
-            false
-        } else {
-            // Not permitted otherwise
-            return Err(Error::new(EPERM));
-        };
+    let setrgid = if context.euid == 0 {
+        // Allow changing RGID if root
+        true
+    } else if rgid == context.egid {
+        // Allow changing RGID if used for EGID
+        true
+    } else if rgid == context.rgid {
+        // Allow changing RGID if used for RGID
+        true
+    } else if rgid as i32 == -1 {
+        // Ignore RGID if -1 is passed
+        false
+    } else {
+        // Not permitted otherwise
+        return Err(Error::new(EPERM));
+    };
 
-    let setegid =
-        if context.euid == 0 {
-            // Allow changing EGID if root
-            true
-        } else if egid == context.egid {
-            // Allow changing EGID if used for EGID
-            true
-        } else if egid == context.rgid {
-            // Allow changing EGID if used for RGID
-            true
-        } else if egid as i32 == -1 {
-            // Ignore EGID if -1 is passed
-            false
-        } else {
-            // Not permitted otherwise
-            return Err(Error::new(EPERM));
-        };
+    let setegid = if context.euid == 0 {
+        // Allow changing EGID if root
+        true
+    } else if egid == context.egid {
+        // Allow changing EGID if used for EGID
+        true
+    } else if egid == context.rgid {
+        // Allow changing EGID if used for RGID
+        true
+    } else if egid as i32 == -1 {
+        // Ignore EGID if -1 is passed
+        false
+    } else {
+        // Not permitted otherwise
+        return Err(Error::new(EPERM));
+    };
 
     if setrgid {
         context.rgid = rgid;
@@ -137,53 +141,51 @@ pub fn setrens(rns: SchemeNamespace, ens: SchemeNamespace) -> Result<usize> {
     let context_lock = contexts.current().ok_or(Error::new(ESRCH))?;
     let mut context = context_lock.write();
 
-    let setrns =
-        if rns.get() as isize == -1 {
-            // Ignore RNS if -1 is passed
-            false
-        } else if rns.get() == 0 {
-            // Allow entering capability mode
-            true
-        } else if context.rns.get() == 0 {
-            // Do not allow leaving capability mode
-            return Err(Error::new(EPERM));
-        } else if context.euid == 0 {
-            // Allow setting RNS if root
-            true
-        } else if rns == context.ens {
-            // Allow setting RNS if used for ENS
-            true
-        } else if rns == context.rns {
-            // Allow setting RNS if used for RNS
-            true
-        } else {
-            // Not permitted otherwise
-            return Err(Error::new(EPERM));
-        };
+    let setrns = if rns.get() as isize == -1 {
+        // Ignore RNS if -1 is passed
+        false
+    } else if rns.get() == 0 {
+        // Allow entering capability mode
+        true
+    } else if context.rns.get() == 0 {
+        // Do not allow leaving capability mode
+        return Err(Error::new(EPERM));
+    } else if context.euid == 0 {
+        // Allow setting RNS if root
+        true
+    } else if rns == context.ens {
+        // Allow setting RNS if used for ENS
+        true
+    } else if rns == context.rns {
+        // Allow setting RNS if used for RNS
+        true
+    } else {
+        // Not permitted otherwise
+        return Err(Error::new(EPERM));
+    };
 
-    let setens =
-        if ens.get() as isize == -1 {
-            // Ignore ENS if -1 is passed
-            false
-        } else if ens.get() == 0 {
-            // Allow entering capability mode
-            true
-        } else if context.ens.get() == 0 {
-            // Do not allow leaving capability mode
-            return Err(Error::new(EPERM));
-        } else if context.euid == 0 {
-            // Allow setting ENS if root
-            true
-        } else if ens == context.ens {
-            // Allow setting ENS if used for ENS
-            true
-        } else if ens == context.rns {
-            // Allow setting ENS if used for RNS
-            true
-        } else {
-            // Not permitted otherwise
-            return Err(Error::new(EPERM));
-        };
+    let setens = if ens.get() as isize == -1 {
+        // Ignore ENS if -1 is passed
+        false
+    } else if ens.get() == 0 {
+        // Allow entering capability mode
+        true
+    } else if context.ens.get() == 0 {
+        // Do not allow leaving capability mode
+        return Err(Error::new(EPERM));
+    } else if context.euid == 0 {
+        // Allow setting ENS if root
+        true
+    } else if ens == context.ens {
+        // Allow setting ENS if used for ENS
+        true
+    } else if ens == context.rns {
+        // Allow setting ENS if used for RNS
+        true
+    } else {
+        // Not permitted otherwise
+        return Err(Error::new(EPERM));
+    };
 
     if setrns {
         assert_ne!(rns.get() as isize, -1);
@@ -203,41 +205,39 @@ pub fn setreuid(ruid: u32, euid: u32) -> Result<usize> {
     let context_lock = contexts.current().ok_or(Error::new(ESRCH))?;
     let mut context = context_lock.write();
 
-    let setruid =
-        if context.euid == 0 {
-            // Allow setting RUID if root
-            true
-        } else if ruid == context.euid {
-            // Allow setting RUID if used for EUID
-            true
-        } else if ruid == context.ruid {
-            // Allow setting RUID if used for RUID
-            true
-        } else if ruid as i32 == -1 {
-            // Ignore RUID if -1 is passed
-            false
-        } else {
-            // Not permitted otherwise
-            return Err(Error::new(EPERM));
-        };
+    let setruid = if context.euid == 0 {
+        // Allow setting RUID if root
+        true
+    } else if ruid == context.euid {
+        // Allow setting RUID if used for EUID
+        true
+    } else if ruid == context.ruid {
+        // Allow setting RUID if used for RUID
+        true
+    } else if ruid as i32 == -1 {
+        // Ignore RUID if -1 is passed
+        false
+    } else {
+        // Not permitted otherwise
+        return Err(Error::new(EPERM));
+    };
 
-    let seteuid =
-        if context.euid == 0 {
-            // Allow setting EUID if root
-            true
-        } else if euid == context.euid {
-            // Allow setting EUID if used for EUID
-            true
-        } else if euid == context.ruid {
-            // Allow setting EUID if used for RUID
-            true
-        } else if euid as i32 == -1 {
-            // Ignore EUID if -1 is passed
-            false
-        } else {
-            // Not permitted otherwise
-            return Err(Error::new(EPERM));
-        };
+    let seteuid = if context.euid == 0 {
+        // Allow setting EUID if root
+        true
+    } else if euid == context.euid {
+        // Allow setting EUID if used for EUID
+        true
+    } else if euid == context.ruid {
+        // Allow setting EUID if used for RUID
+        true
+    } else if euid as i32 == -1 {
+        // Ignore EUID if -1 is passed
+        false
+    } else {
+        // Not permitted otherwise
+        return Err(Error::new(EPERM));
+    };
 
     if setruid {
         context.ruid = ruid;