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Diffstat (limited to 'Documentation/media/uapi/mediactl/media-func-open.rst')
-rw-r--r-- | Documentation/media/uapi/mediactl/media-func-open.rst | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/Documentation/media/uapi/mediactl/media-func-open.rst b/Documentation/media/uapi/mediactl/media-func-open.rst deleted file mode 100644 index cd2f840ddf73..000000000000 --- a/Documentation/media/uapi/mediactl/media-func-open.rst +++ /dev/null @@ -1,76 +0,0 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/media/uapi/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections - -.. _media-func-open: - -************ -media open() -************ - -Name -==== - -media-open - Open a media device - - -Synopsis -======== - -.. code-block:: c - - #include <fcntl.h> - - -.. c:function:: int open( const char *device_name, int flags ) - :name: mc-open - -Arguments -========= - -``device_name`` - Device to be opened. - -``flags`` - Open flags. Access mode must be either ``O_RDONLY`` or ``O_RDWR``. - Other flags have no effect. - - -Description -=========== - -To open a media device applications call :ref:`open() <media-func-open>` with the -desired device name. The function has no side effects; the device -configuration remain unchanged. - -When the device is opened in read-only mode, attempts to modify its -configuration will result in an error, and ``errno`` will be set to -EBADF. - - -Return Value -============ - -:ref:`open() <func-open>` returns the new file descriptor on success. On error, --1 is returned, and ``errno`` is set appropriately. Possible error codes -are: - -EACCES - The requested access to the file is not allowed. - -EMFILE - The process already has the maximum number of files open. - -ENFILE - The system limit on the total number of open files has been reached. - -ENOMEM - Insufficient kernel memory was available. - -ENXIO - No device corresponding to this device special file exists. |