add fstatat syscall

Add tzdb installation

cykusz-rs/src/kernel/syscall/mod.rs

@@ -88,6 +88,7 @@ pub fn syscall_handler(num: u64, a: u64, b: u64, c: u64, d: u64, e: u64, f: u64)
         SYS_TICKSNS => sys::sys_ticksns(),
         SYS_GETPPID => sys::sys_getppid(),
         SYS_GETPGID => sys::sys_getpgid(a),
+        SYS_FSTATAT => sys::sys_fstatat(a, b, c, d),
         a => {
             logln!("NO SYS????? {}", a);
             Err(SyscallError::ENOSYS)

cykusz-rs/src/kernel/syscall/sys.rs

@@ -15,7 +15,7 @@ use syscall_defs::{OpenFlags, SyscallError};
 use crate::kernel::fs::dirent::DirEntry;
 use crate::kernel::fs::path::Path;
 use crate::kernel::fs::poll::PollTable;
-use crate::kernel::fs::{lookup_by_path, lookup_by_real_path, LookupMode};
+use crate::kernel::fs::{lookup_by_path, lookup_by_path_at, lookup_by_real_path, LookupMode};
 use crate::kernel::mm::VirtAddr;
 use crate::kernel::net::ip::Ip4;
 use crate::kernel::sched::{current_task, current_task_ref, SleepFlags};
@@ -1117,6 +1117,35 @@ pub fn sys_fstat(fd: u64, stat: u64) -> SyscallResult {
     Ok(0)
 }
 
+pub fn sys_fstatat(fd: u64, path: u64, path_len: u64, stat: u64) -> SyscallResult {
+    let fd = OpenFD::try_from(fd)?;
+    let path = Path::new(make_str(path, path_len));
+
+    let task = current_task_ref();
+
+    let dirent = match fd {
+        OpenFD::Fd(fd) => {
+            task.get_handle(fd).ok_or(SyscallError::EBADFD)?.inode.clone()
+        }
+        OpenFD::Cwd => {
+            task.get_dent().ok_or(SyscallError::EBADFD)?.clone()
+        }
+        OpenFD::None => {
+            return Err(SyscallError::EINVAL);
+        }
+    };
+
+    let stat = unsafe { VirtAddr(stat as usize).read_mut::<syscall_defs::stat::Stat>() };
+
+    let file = lookup_by_path_at(dirent, path, LookupMode::None)?;
+
+    *stat = file.inode().stat()?;
+
+    logln!("fstatat {:?}, {:?}", fd, stat);
+
+    Ok(0)
+}
+
 pub fn sys_getrlimit(resource: u64, rlimit: u64) -> SyscallResult {
     let resource = syscall_defs::resource::RLimitKind::try_from(resource)?;
 

disk_scripts/install_os.sh

@@ -25,6 +25,7 @@ for prog in $PROGS; do
 done
 
 cp -r sysroot/cykusz/usr mnt/
+cp -r sysroot/cykusz/etc mnt/
 
 #cp -r sysroot/cross/x86_64-cykusz/lib/* mnt/usr/lib/
 #cp sysroot/test.c mnt/

syscall-defs/src/lib.rs

@@ -86,6 +86,7 @@ pub const SYS_TICKSNS: usize = 58;
 
 pub const SYS_GETPPID: usize = 59;
 pub const SYS_GETPGID: usize = 60;
+pub const SYS_FSTATAT: usize = 61;
 
 #[derive(Copy, Clone, PartialEq, Debug)]
 #[repr(u64)]
@@ -184,9 +185,11 @@ pub enum SyscallError {
     UnknownError = 0xffff,
 }
 
+#[derive(Debug)]
 pub enum OpenFD {
     Fd(usize),
     Cwd,
+    None,
 }
 
 impl TryFrom<u64> for OpenFD {
@@ -197,6 +200,7 @@ impl TryFrom<u64> for OpenFD {
 
         match v {
             -100 => Ok(OpenFD::Cwd),
+            -1 => Ok(OpenFD::None),
             a if a >= 0 && a < 256 => Ok(OpenFD::Fd(a as usize)),
             _ => Err(SyscallError::EINVAL),
         }
@@ -208,6 +212,7 @@ impl From<OpenFD> for usize {
         match v {
             OpenFD::Fd(a) => a,
             OpenFD::Cwd => (-100isize) as usize,
+            OpenFD::None => (-1isize) as usize,
         }
     }
 }

sysroot/build.sh

@@ -17,6 +17,7 @@ MPFR_SRC_DIR=$SRC_DIR/mpfr
 MPC_SRC_DIR=$SRC_DIR/mpc
 DOOM_SRC_DIR=$SRC_DIR/doomgeneric
 COREUTILS_SRC_DIR=$SRC_DIR/coreutils
+TZDB_SRC_DIR=$SRC_DIR/tzdb
 
 BUILD_DIR=$CYKUSZ_DIR/sysroot/build
 BINUTILS_BUILD_DIR=$BUILD_DIR/binutils-gdb
@@ -31,6 +32,7 @@ MLIBC_BUILD_DIR=$BUILD_DIR/mlibc
 GMP_BUILD_DIR=$BUILD_DIR/gmp
 MPFR_BUILD_DIR=$BUILD_DIR/mpfr
 MPC_BUILD_DIR=$BUILD_DIR/mpc
+TZDB_BUILD_DIR=$BUILD_DIR/tzdb
 
 SYSROOT=$CYKUSZ_DIR/sysroot/cykusz
 CROSS=$CYKUSZ_DIR/sysroot/cross
@@ -110,6 +112,13 @@ function _prepare_coreutils {
     fi
 }
 
+function _prepare_tzdb {
+    if [ ! -d $TZDB_SRC_DIR ]; then
+        mkdir -p $SRC_DIR
+        git clone --depth 1 -b cykusz https://github.com/rafalmiel/tzdb.git $TZDB_SRC_DIR
+    fi
+}
+
 function _prepare_nano {
     if [ ! -d $NANO_SRC_DIR ]; then
         mkdir -p $SRC_DIR
@@ -212,6 +221,18 @@ function _libstd {
     make -C $GCC_BUILD_DIR install-target-libstdc++-v3
 }
 
+function _tzdb {
+    _prepare_tzdb
+
+    make -C $TZDB_SRC_DIR
+    make -C $TZDB_SRC_DIR DESTDIR=$SYSROOT install
+
+    pushd .
+    cd $SYSROOT/etc
+    ln -sf ../usr/share/zoneinfo/Europe/London localtime
+    popd
+}
+
 function _cykusz_binutils {
     _prepare_binutils
 

sysroot/toolchain.sh

@@ -19,6 +19,9 @@ $SPATH/build.sh gcc > $LOGDIR/gcc.log 2>&1
 echo "Building mlibc..."
 $SPATH/build.sh mlibc > $LOGDIR/mlibc.log 2>&1
 
+echo "Building tzdb..."
+$SPATH/build.sh tzdb > $LOGDIR/tzdb.log 2>&1
+
 echo "Building libgcc..."
 $SPATH/build.sh libgcc > $LOGDIR/libgcc.log 2>&1