[Ravenwood] Make Os.stat() family available (7692bcb3) · Commits · e / os / android_frameworks_base

ravenwood/runtime-helper-src/libcore-fake/android/system/Os.java

+12 −1

Original line number	Diff line number	Diff line
		@@ -30,7 +30,6 @@ public final class Os {
		return RavenwoodRuntimeNative.lseek(fd, offset, whence);
		}


		public static FileDescriptor[] pipe2(int flags) throws ErrnoException {
		return RavenwoodRuntimeNative.pipe2(flags);
		}
		@@ -42,4 +41,16 @@ public final class Os {
		public static int fcntlInt(FileDescriptor fd, int cmd, int arg) throws ErrnoException {
		return RavenwoodRuntimeNative.fcntlInt(fd, cmd, arg);
		}

		public static StructStat fstat(FileDescriptor fd) throws ErrnoException {
		return RavenwoodRuntimeNative.fstat(fd);
		}

		public static StructStat lstat(String path) throws ErrnoException {
		return RavenwoodRuntimeNative.lstat(path);
		}

		public static StructStat stat(String path) throws ErrnoException {
		return RavenwoodRuntimeNative.stat(path);
		}
		}

ravenwood/runtime-helper-src/libcore-fake/android/system/StructStat.java

0 → 100644

+121 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2011 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.system;

		import libcore.util.Objects;

		/**
		* File information returned by {@link Os#fstat}, {@link Os#lstat}, and {@link Os#stat}.
		* Corresponds to C's {@code struct stat} from {@code <stat.h>}.
		*/
		public final class StructStat {
		/** Device ID of device containing file. */
		public final long st_dev; /dev_t/

		/** File serial number (inode). */
		public final long st_ino; /ino_t/

		/** Mode (permissions) of file. */
		public final int st_mode; /mode_t/

		/** Number of hard links to the file. */
		public final long st_nlink; /nlink_t/

		/** User ID of file. */
		public final int st_uid; /uid_t/

		/** Group ID of file. */
		public final int st_gid; /gid_t/

		/** Device ID (if file is character or block special). */
		public final long st_rdev; /dev_t/

		/**
		* For regular files, the file size in bytes.
		* For symbolic links, the length in bytes of the pathname contained in the symbolic link.
		* For a shared memory object, the length in bytes.
		* For a typed memory object, the length in bytes.
		* For other file types, the use of this field is unspecified.
		*/
		public final long st_size; /off_t/

		/** Seconds part of time of last access. */
		public final long st_atime; /time_t/

		/** StructTimespec with time of last access. */
		public final StructTimespec st_atim;

		/** Seconds part of time of last data modification. */
		public final long st_mtime; /time_t/

		/** StructTimespec with time of last modification. */
		public final StructTimespec st_mtim;

		/** Seconds part of time of last status change */
		public final long st_ctime; /time_t/

		/** StructTimespec with time of last status change. */
		public final StructTimespec st_ctim;

		/**
		* A file system-specific preferred I/O block size for this object.
		* For some file system types, this may vary from file to file.
		*/
		public final long st_blksize; /blksize_t/

		/** Number of blocks allocated for this object. */
		public final long st_blocks; /blkcnt_t/

		/**
		* Constructs an instance with the given field values.
		*/
		public StructStat(long st_dev, long st_ino, int st_mode, long st_nlink, int st_uid, int st_gid,
		long st_rdev, long st_size, long st_atime, long st_mtime, long st_ctime,
		long st_blksize, long st_blocks) {
		this(st_dev, st_ino, st_mode, st_nlink, st_uid, st_gid,
		st_rdev, st_size, new StructTimespec(st_atime, 0L), new StructTimespec(st_mtime, 0L),
		new StructTimespec(st_ctime, 0L), st_blksize, st_blocks);
		}

		/**
		* Constructs an instance with the given field values.
		*/
		public StructStat(long st_dev, long st_ino, int st_mode, long st_nlink, int st_uid, int st_gid,
		long st_rdev, long st_size, StructTimespec st_atim, StructTimespec st_mtim,
		StructTimespec st_ctim, long st_blksize, long st_blocks) {
		this.st_dev = st_dev;
		this.st_ino = st_ino;
		this.st_mode = st_mode;
		this.st_nlink = st_nlink;
		this.st_uid = st_uid;
		this.st_gid = st_gid;
		this.st_rdev = st_rdev;
		this.st_size = st_size;
		this.st_atime = st_atim.tv_sec;
		this.st_mtime = st_mtim.tv_sec;
		this.st_ctime = st_ctim.tv_sec;
		this.st_atim = st_atim;
		this.st_mtim = st_mtim;
		this.st_ctim = st_ctim;
		this.st_blksize = st_blksize;
		this.st_blocks = st_blocks;
		}

		@Override public String toString() {
		return Objects.toString(this);
		}
		}

ravenwood/runtime-helper-src/libcore-fake/android/system/StructTimespec.java

0 → 100644

+79 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2017 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.system;

		import libcore.util.Objects;;

		/**
		* Corresponds to C's {@code struct timespec} from {@code <time.h>}.
		*/
		public final class StructTimespec implements Comparable<StructTimespec> {
		/** Seconds part of time of last data modification. */
		public final long tv_sec; /time_t/

		/** Nanoseconds (values are [0, 999999999]). */
		public final long tv_nsec;

		public StructTimespec(long tv_sec, long tv_nsec) {
		this.tv_sec = tv_sec;
		this.tv_nsec = tv_nsec;
		if (tv_nsec < 0 \|\| tv_nsec > 999_999_999) {
		throw new IllegalArgumentException(
		"tv_nsec value " + tv_nsec + " is not in [0, 999999999]");
		}
		}

		@Override
		public int compareTo(StructTimespec other) {
		if (tv_sec > other.tv_sec) {
		return 1;
		}
		if (tv_sec < other.tv_sec) {
		return -1;
		}
		if (tv_nsec > other.tv_nsec) {
		return 1;
		}
		if (tv_nsec < other.tv_nsec) {
		return -1;
		}
		return 0;
		}

		@Override
		public boolean equals(Object o) {
		if (this == o) return true;
		if (o == null \|\| getClass() != o.getClass()) return false;

		StructTimespec that = (StructTimespec) o;

		if (tv_sec != that.tv_sec) return false;
		return tv_nsec == that.tv_nsec;
		}

		@Override
		public int hashCode() {
		int result = (int) (tv_sec ^ (tv_sec >>> 32));
		result = 31 * result + (int) (tv_nsec ^ (tv_nsec >>> 32));
		return result;
		}

		@Override
		public String toString() {
		return Objects.toString(this);
		}
		}

ravenwood/runtime-common-src/com/android/ravenwood/common/RavenwoodRuntimeNative.java→ravenwood/runtime-helper-src/libcore-fake/com/android/ravenwood/common/RavenwoodRuntimeNative.java

+23 −8

Original line number	Diff line number	Diff line
		@@ -15,6 +15,9 @@
		*/
		package com.android.ravenwood.common;

		import android.system.ErrnoException;
		import android.system.StructStat;

		import java.io.FileDescriptor;

		/**
		@@ -31,19 +34,25 @@ public class RavenwoodRuntimeNative {

		public static native void applyFreeFunction(long freeFunction, long nativePtr);

		public static native long nLseek(int fd, long offset, int whence);
		private static native long nLseek(int fd, long offset, int whence) throws ErrnoException;

		private static native int[] nPipe2(int flags) throws ErrnoException;

		private static native int nDup(int oldfd) throws ErrnoException;

		private static native int nFcntlInt(int fd, int cmd, int arg) throws ErrnoException;

		public static native int[] nPipe2(int flags);
		private static native StructStat nFstat(int fd) throws ErrnoException;

		public static native int nDup(int oldfd);
		public static native StructStat lstat(String path) throws ErrnoException;

		public static native int nFcntlInt(int fd, int cmd, int arg);
		public static native StructStat stat(String path) throws ErrnoException;

		public static long lseek(FileDescriptor fd, long offset, int whence) {
		public static long lseek(FileDescriptor fd, long offset, int whence) throws ErrnoException {
		return nLseek(JvmWorkaround.getInstance().getFdInt(fd), offset, whence);
		}

		public static FileDescriptor[] pipe2(int flags) {
		public static FileDescriptor[] pipe2(int flags) throws ErrnoException {
		var fds = nPipe2(flags);
		var ret = new FileDescriptor[] {
		new FileDescriptor(),
		@@ -55,7 +64,7 @@ public class RavenwoodRuntimeNative {
		return ret;
		}

		public static FileDescriptor dup(FileDescriptor fd) {
		public static FileDescriptor dup(FileDescriptor fd) throws ErrnoException {
		var fdInt = nDup(JvmWorkaround.getInstance().getFdInt(fd));

		var retFd = new java.io.FileDescriptor();
		@@ -63,9 +72,15 @@ public class RavenwoodRuntimeNative {
		return retFd;
		}

		public static int fcntlInt(FileDescriptor fd, int cmd, int arg) {
		public static int fcntlInt(FileDescriptor fd, int cmd, int arg) throws ErrnoException {
		var fdInt = JvmWorkaround.getInstance().getFdInt(fd);

		return nFcntlInt(fdInt, cmd, arg);
		}

		public static StructStat fstat(FileDescriptor fd) throws ErrnoException {
		var fdInt = JvmWorkaround.getInstance().getFdInt(fd);

		return nFstat(fdInt);
		}
		}

ravenwood/runtime-helper-src/libcore-fake/libcore/util/Objects.java

0 → 100644

+85 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2010 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package libcore.util;

		import java.lang.reflect.Field;
		import java.lang.reflect.Modifier;
		import java.util.Arrays;

		public final class Objects {
		private Objects() {}

		/**
		* Returns a string reporting the value of each declared field, via reflection.
		* Static and transient fields are automatically skipped. Produces output like
		* "SimpleClassName[integer=1234,string="hello",character='c',intArray=[1,2,3]]".
		*/
		public static String toString(Object o) {
		Class<?> c = o.getClass();
		StringBuilder sb = new StringBuilder();
		sb.append(c.getSimpleName()).append('[');
		int i = 0;
		for (Field f : c.getDeclaredFields()) {
		if ((f.getModifiers() & (Modifier.STATIC \| Modifier.TRANSIENT)) != 0) {
		continue;
		}
		f.setAccessible(true);
		try {
		Object value = f.get(o);

		if (i++ > 0) {
		sb.append(',');
		}

		sb.append(f.getName());
		sb.append('=');

		if (value.getClass().isArray()) {
		if (value.getClass() == boolean[].class) {
		sb.append(Arrays.toString((boolean[]) value));
		} else if (value.getClass() == byte[].class) {
		sb.append(Arrays.toString((byte[]) value));
		} else if (value.getClass() == char[].class) {
		sb.append(Arrays.toString((char[]) value));
		} else if (value.getClass() == double[].class) {
		sb.append(Arrays.toString((double[]) value));
		} else if (value.getClass() == float[].class) {
		sb.append(Arrays.toString((float[]) value));
		} else if (value.getClass() == int[].class) {
		sb.append(Arrays.toString((int[]) value));
		} else if (value.getClass() == long[].class) {
		sb.append(Arrays.toString((long[]) value));
		} else if (value.getClass() == short[].class) {
		sb.append(Arrays.toString((short[]) value));
		} else {
		sb.append(Arrays.toString((Object[]) value));
		}
		} else if (value.getClass() == Character.class) {
		sb.append('\'').append(value).append('\'');
		} else if (value.getClass() == String.class) {
		sb.append('"').append(value).append('"');
		} else {
		sb.append(value);
		}
		} catch (IllegalAccessException unexpected) {
		throw new AssertionError(unexpected);
		}
		}
		sb.append("]");
		return sb.toString();
		}
		}