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https://git.rtems.org/rtems-docs/
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254 lines
5.1 KiB
ReStructuredText
254 lines
5.1 KiB
ReStructuredText
Files and Directories
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#####################
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Directories
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===========
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Format of Directory Entries
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---------------------------
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Directory Operations
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--------------------
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.. code:: c
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struct dirent, Type, Implemented
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opendir(), Function, Implemented
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readdir(), Function, Implemented
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readdir_r(), Function, Implemented
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rewinddir(), Function, Implemented
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closedir(), Function, Implemented
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Working Directory
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=================
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Change Current Working Directory
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--------------------------------
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.. code:: c
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chdir(), Function, Implemented
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Get Working Directory Pathname
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------------------------------
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.. code:: c
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getcwd(), Function, Implemented
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General File Creation
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=====================
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Open a File
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-----------
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.. code:: c
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open(), Function, Implemented
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O_RDONLY, Constant, Implemented
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O_WRONLY, Constant, Implemented
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O_RDWR, Constant, Implemented
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O_APPEND, Constant, Implemented
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O_CREAT, Constant, Implemented
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O_DSYNC, Constant, Unimplemented
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O_EXCL, Constant, Implemented
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O_NOCTTY, Constant, Implemented
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O_NONBLOCK, Constant, Implemented
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O_RSYNC, Constant, Unimplemented
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O_SYNC, Constant, Implemented
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O_TRUNC, Constant, Implemented
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NOTE: In the newlib fcntl.h, O_SYNC is defined only if _POSIX_SOURCE is
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not defined. This seems wrong.
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Create a New File or Rewrite an Existing One
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--------------------------------------------
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.. code:: c
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creat(), Function, Implemented
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Set File Creation Mask
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----------------------
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.. code:: c
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umask(), Function, Implemented
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Link to a File
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--------------
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.. code:: c
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link(), Function, Implemented
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Special File Creation
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=====================
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Make a Directory
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----------------
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.. code:: c
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mkdir(), Function, Implemented
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Make a FIFO Special File
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------------------------
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.. code:: c
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mkfifo(), Function, Untested Implementation
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NOTE: mkfifo() is implemented but no filesystem supports FIFOs.
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File Removal
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============
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Remove Directory Entries
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------------------------
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.. code:: c
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unlink(), Function, Implemented
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Remove a Directory
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------------------
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.. code:: c
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rmdir(), Function, Implemented
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Rename a File
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-------------
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.. code:: c
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rename(), Function, Partial Implementation
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File Characteristics
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====================
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File Characteristics Header and Data Structure
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----------------------------------------------
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.. code:: c
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struct stat, Type, Implemented
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<sys/stat.h> File Types
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~~~~~~~~~~~~~~~~~~~~~~~
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.. code:: c
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S_ISBLK(), Function, Implemented
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S_ISCHR(), Function, Implemented
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S_ISDIR(), Function, Implemented
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S_ISFIFO(), Function, Implemented
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S_ISREG(), Function, Implemented
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S_TYPEISMQ(), Function, Unimplemented
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S_TYPEISSEM(), Function, Unimplemented
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S_TYPEISSHM(), Function, Unimplemented
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<sys/stat.h> File Modes
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~~~~~~~~~~~~~~~~~~~~~~~
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.. code:: c
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S_IRWXU, Constant, Implemented
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S_IRUSR, Constant, Implemented
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S_IWUSR, Constant, Implemented
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S_IXUSR, Constant, Implemented
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S_IRWXG, Constant, Implemented
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S_IRGRP, Constant, Implemented
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S_IWGRP, Constant, Implemented
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S_IXGRP, Constant, Implemented
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S_IRWXO, Constant, Implemented
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S_IROTH, Constant, Implemented
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S_IWOTH, Constant, Implemented
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S_IXOTH, Constant, Implemented
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S_ISUID, Constant, Implemented
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S_ISGID, Constant, Implemented
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<sys/stat.h> Time Entries
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~~~~~~~~~~~~~~~~~~~~~~~~~
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Get File Status
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---------------
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.. code:: c
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stat(), Function, Implemented
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fstat(), Function, Implemented
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Check File Accessibility
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------------------------
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.. code:: c
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access(), Function, Implemented
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Change File Modes
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-----------------
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.. code:: c
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chmod(), Function, Implemented
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fchmod(), Function, Implemented
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Change Owner and Group of a File
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--------------------------------
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.. code:: c
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chown(), Function, Implemented
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Set File Access and Modification Times
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--------------------------------------
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.. code:: c
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struct utimbuf, Type, Implemented
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utime(), Function, Implemented
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Truncate a File to a Specified Length
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-------------------------------------
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.. code:: c
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ftruncate(), Function, Implemented
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Configurable Pathname Variable
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==============================
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Get Configurable Pathname Variables
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-----------------------------------
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.. code:: c
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pathconf(), Function, Implemented
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fpathconf(), Function, Implemented
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_PC_LINK_MAX, Constant, Implemented
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_PC_MAX_CANON, Constant, Implemented
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_PC_MAX_INPUT, Constant, Implemented
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_PC_MAX_INPUT, Constant, Implemented
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_PC_NAME_MAX, Constant, Implemented
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_PC_PATH_MAX, Constant, Implemented
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_PC_PIPE_BUF, Constant, Implemented
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_PC_ASYNC_IO, Constant, Implemented
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_PC_CHOWN_RESTRICTED, Constant, Implemented
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_PC_NO_TRUNC, Constant, Implemented
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_PC_PRIO_IO, Constant, Implemented
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_PC_SYNC_IO, Constant, Implemented
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_PC_VDISABLE, Constant, Implemented
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NOTE: The newlib unistd.h and sys/unistd.h are installed and the
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include search patch is used to get the right one. There are
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conflicts between the newlib unistd.h and RTEMS’ version.
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.. COMMENT: COPYRIGHT (c) 1988-2002.
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.. COMMENT: On-Line Applications Research Corporation (OAR).
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.. COMMENT: All rights reserved.
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