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13.14 File Status Flags

File status flags are used to specify attributes of the opening of a file. Unlike the file descriptor flags discussed in Descriptor Flags, the file status flags are shared by duplicated file descriptors resulting from a single opening of the file. The file status flags are specified with the flags argument to open; see Opening and Closing Files.

File status flags fall into three categories, which are described in the following sections.

The symbols in this section are defined in the header file fcntl.h.