Big commit: Added symlink support to the kernel.
- added needed syscalls to access symlink support from userland - implemented lstat(), symlink(), and readlink() - added dev_t to ktypes.h (for now - should be in a public header anyway) - added symlink support to the "ls" command (now calls lstat() and shows the link target with the -l option) - changed the sys_read_stat() call to support symlinks, and updated files using that function (it gets an extra argument: bool traverseLink) git-svn-id: file:///srv/svn/repos/haiku/trunk/current@560 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
@@ -10,7 +10,7 @@
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// This file should reside in headers/posix, not here...
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// needs ino_t (int64), and dev_t (long)
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#include <ktypes.h>
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typedef long dev_t;
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typedef struct dirent {
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dev_t d_dev;
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+80
-224
@@ -1,246 +1,102 @@
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/*-
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)stat.h 8.9 (Berkeley) 8/17/94
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*/
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#ifndef _SYS_STAT_H_
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#define _SYS_STAT_H_
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#define _SYS_STAT_H_
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//#include <sys/time.h>
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#include <OS.h>
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//#include <sys/types.h>
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#include <ktypes.h>
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/**
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* @file stat.h
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* @brief Stat structures and defines
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*/
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/**
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* @defgroup OpenBeOS_POSIX POSIX Headers
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* @brief Headers to provide the POSIX layer
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*/
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/**
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* @defgroup Stat sys/stat.h
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* @brief Structures and prototypes for stat operations
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* @ingroup OpenBeOS_POSIX
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* @{
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*/
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/* XXX - some types we don't yet have in sys/types.h (because we don't yet
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* have a sys/types.h and these aren't in ktypes.h!)
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/*
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* stat structure
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*/
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#ifdef _KERNEL_MODE
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struct ostat {
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mode_t st_mode; /* inode protection mode */
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ino_t st_ino; /* inode's number */
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uint16 st_dev; /* inode's device */
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nlink_t st_nlink; /* number of hard links */
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uid_t st_uid; /* user ID of the file's owner */
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gid_t st_gid; /* group ID of the file's group */
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off_t st_size; /* file size, in bytes */
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time_t st_atime; /* time of last access */
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time_t st_mtime; /* time of last data modification */
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time_t st_ctime; /* time of last file status change */
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int64 st_blocks; /* blocks allocated for file */
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int32 st_blksize; /* optimal blocksize for I/O */
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};
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#endif /* _KERNEL_MODE */
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/* XXX - The stat structure, as defined by POSIX.
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* Just implement what we can for the time being.
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*/
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struct stat {
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mode_t st_mode; /* File mode */
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ino_t st_ino; /* vnode_id */
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// dev_t st_dev; /* inode's device */
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nlink_t st_nlink; /* number of hard links */
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uid_t st_uid; /* user ID of the file's owner */
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gid_t st_gid; /* group ID of the file's group */
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off_t st_size; /* file size, in bytes */
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time_t st_atime; /* time of last access */
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time_t st_mtime; /* time of last data modification */
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time_t st_ctime; /* time of last file status change */
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int64 st_blocks; /* blocks allocated for file */
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uint32 st_blksize; /* optimal blocksize for I/O */
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dev_t st_dev; /* "device" that this file resides on */
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ino_t st_ino; /* this file's inode #, unique per device */
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mode_t st_mode; /* mode bits (rwx for user, group, etc) */
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nlink_t st_nlink; /* number of hard links to this file */
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uid_t st_uid; /* user id of the owner of this file */
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gid_t st_gid; /* group id of the owner of this file */
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off_t st_size; /* size in bytes of this file */
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dev_t st_rdev; /* device type (not used) */
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size_t st_blksize; /* preferred block size for i/o */
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time_t st_atime; /* last access time */
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time_t st_mtime; /* last modification time */
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time_t st_ctime; /* last change time, not creation time */
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time_t st_crtime; /* creation time */
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};
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/**
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* @defgroup POSIX_filemodes File mode defines
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* @brief Defines of the file modes we allow
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* @ingroup Stat
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*@{
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*/
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/** @def S_ISUID set user id on execution */
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/** @def S_ISGID set group id on execution */
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/** @def S_ISTXT sticky bit */
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#define S_ISUID 0004000
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#define S_ISGID 0002000
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#define S_ISTXT 0001000
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/* extended file types */
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#define S_ATTR_DIR 01000000000 /* attribute directory */
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#define S_ATTR 02000000000 /* attribute */
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#define S_INDEX_DIR 04000000000 /* index (or index directory) */
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#define S_STR_INDEX 00100000000 /* string index */
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#define S_INT_INDEX 00200000000 /* int32 index */
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#define S_UINT_INDEX 00400000000 /* uint32 index */
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#define S_LONG_LONG_INDEX 00010000000 /* int64 index */
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#define S_ULONG_LONG_INDEX 00020000000 /* uint64 index */
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#define S_FLOAT_INDEX 00040000000 /* float index */
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#define S_DOUBLE_INDEX 00001000000 /* double index */
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#define S_ALLOW_DUPS 00002000000 /* allow duplicate entries (currently unused) */
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/** @def S_IRWXU RWX mask for owner */
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/** @def S_IRUSR R for owner */
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/** @def S_IWUSR W for owner */
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/** @def S_IXUSR X for owner */
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#define S_IRWXU 0000700
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#define S_IRUSR 0000400
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#define S_IWUSR 0000200
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#define S_IXUSR 0000100
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/* standard file types */
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#define S_IFMT 00000170000 /* type of file */
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#define S_IFLNK 00000120000 /* symbolic link */
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#define S_IFREG 00000100000 /* regular */
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#define S_IFBLK 00000060000 /* block special */
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#define S_IFDIR 00000040000 /* directory */
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#define S_IFCHR 00000020000 /* character special */
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#define S_IFIFO 00000010000 /* fifo */
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/** @def S_IRWXG RWX mask for group */
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/** @def S_IWGRP W for group */
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/** @def S_IRGRP R for group */
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/** @def S_IXGRP X for group */
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#define S_IRWXG 0000070
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#define S_IRGRP 0000040
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#define S_IWGRP 0000020
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#define S_IXGRP 0000010
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#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
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#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
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#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
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#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
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#define S_ISINDEX(m) (((m) & S_INDEX_DIR) == S_INDEX_DIR)
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/** @def S_IXOTH RWX mask for other */
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/** @def S_IROTH R for other */
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/** @def S_IWOTH W for other */
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/** @def S_IXOTH X for other */
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#define S_IRWXO 0000007
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#define S_IROTH 0000004
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#define S_IWOTH 0000002
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#define S_IXOTH 0000001
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#define S_IUMSK 07777 /* user settable bits */
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#define S_IFMT 0170000
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#define S_IFSOCK 0140000
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#define S_IFIFO 0010000
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#define S_IFCHR 0020000
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#define S_IFDIR 0040000
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#define S_IFBLK 0060000
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#define S_IFREG 0100000
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#define S_IFLNK 0120000
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#define S_IFWHT 0160000
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#define S_ISVTX 0001000
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#define S_ISUID 04000 /* set user id on execution */
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#define S_ISGID 02000 /* set group id on execution */
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/**
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* @defgroup stat_tests Stat Macro's
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* @ingroup POSIX_filemodes
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* @brief macro's that should be used to test for the type of device
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* @{
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*/
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/** @def S_ISDIR(m) it's a directory */
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/** @def S_ISREG(m) it's a regular file */
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/** @def S_ISCHR(m) it's a character device */
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/** @def S_ISBLK(m) it's a block device */
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/** @def S_ISFIFO(m) it's a fifo device */
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/** @def S_ISLNK(m) it's a symbolic link */
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/** @def S_ISSOCK(m) it's a socket */
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/** @def S_ISWHT(m) whiteout? */
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#define S_ISDIR(m) ((m & 0170000) == 0040000)
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#define S_ISREG(m) ((m & 0170000) == 0100000)
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#define S_ISCHR(m) ((m & 0170000) == 0020000)
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#define S_ISBLK(m) ((m & 0170000) == 0060000)
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#define S_ISFIFO(m) ((m & 0170000) == 0010000)
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#define S_ISLNK(m) ((m & 0170000) == 0120000)
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#define S_ISSOCK(m) ((m & 0170000) == 0140000)
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#define S_ISWHT(m) ((m & 0170000) == 0160000)
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/** @} */
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#define S_ISVTX 01000 /* save swapped text even after use */
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#define S_IRWXU 00700 /* read, write, execute: owner */
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#define S_IRUSR 00400 /* read permission: owner */
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#define S_IWUSR 00200 /* write permission: owner */
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#define S_IXUSR 00100 /* execute permission: owner */
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#define S_IRWXG 00070 /* read, write, execute: group */
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#define S_IRGRP 00040 /* read permission: group */
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#define S_IWGRP 00020 /* write permission: group */
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#define S_IXGRP 00010 /* execute permission: group */
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#define S_IRWXO 00007 /* read, write, execute: other */
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#define S_IROTH 00004 /* read permission: other */
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#define S_IWOTH 00002 /* write permission: other */
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#define S_IXOTH 00001 /* execute permission: other */
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/** @def ACCESSPERMS 00777 */
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/** @def ALLPERMS 07777 */
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/** @def DEFFILEMODE 00666 default file mode, everyone can read/write*/
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#define ACCESSPERMS (S_IRWXU | S_IRWXG | S_IRWXO)
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/** @def ALLPERMS 07777 */
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#define ALLPERMS (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
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/** @def DEFFILEMODE 00666 default file mode, everyone can read/write*/
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#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
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/** @} */
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/*
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* Definitions of flags stored in file flags word.
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*
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* Super-user and owner changeable flags.
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*/
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#define UF_SETTABLE 0x0000ffff /* mask of owner changeable flags */
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#define UF_NODUMP 0x00000001 /* do not dump file */
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#define UF_IMMUTABLE 0x00000002 /* file may not be changed */
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#define UF_APPEND 0x00000004 /* writes to file may only append */
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#define UF_OPAQUE 0x00000008 /* directory is opaque wrt. union */
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/*
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* Super-user changeable flags.
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*/
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#define SF_SETTABLE 0xffff0000 /* mask of superuser changeable flags */
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#define SF_ARCHIVED 0x00010000 /* file is archived */
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#define SF_IMMUTABLE 0x00020000 /* file may not be changed */
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#define SF_APPEND 0x00040000 /* writes to file may only append */
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#ifdef _KERNEL_MODE
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/*
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* Shorthand abbreviations of above.
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*/
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#define OPAQUE (UF_OPAQUE)
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#define APPEND (UF_APPEND | SF_APPEND)
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#define IMMUTABLE (UF_IMMUTABLE | SF_IMMUTABLE)
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#endif /* _KERNEL_MODE */
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#ifndef _KERNEL_MODE_
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//#include <sys/cdefs.h>
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/** @fn int chmod(const char *path, mode_t mode)
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* Changes the file protection modes to those given by mode
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*
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* @ref POISX_filemodes
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*/
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int chmod (const char *, mode_t);
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/** @fn int fstat(int fd, struct stat *stat)
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* get file information on a file identified by descriptor fd
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*
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* @ref stat
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*/
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int fstat (int, struct stat *);
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//int mknod (const char *, mode_t, dev_t);
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int mkdir (const char *, mode_t);
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int mkfifo (const char *, mode_t);
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/** @fn int stat(const char *path, struct stat *stat)
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* Get file information for file path and store it in the structure
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* stat
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*
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* @ref stat
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*/
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int stat (const char *, struct stat *);
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mode_t umask (mode_t);
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int fchmod (int, mode_t);
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int lstat (const char *, struct stat *);
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @} */
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extern int chmod(const char *path, mode_t mode);
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extern int fchmod(int fd, mode_t mode);
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extern int stat(const char *path, struct stat *buf);
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extern int fstat(int fd, struct stat *buf);
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extern int lstat(const char *path, struct stat *st);
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extern int mkdir(const char *path, mode_t mode);
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extern int mkfifo(const char *path, mode_t mode);
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extern mode_t umask(mode_t cmask);
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#endif /* !_SYS_STAT_H_ */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_STAT_H_ */
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Reference in New Issue
Block a user