File I/O

The file I/O functions provide platform-independent, thread-safe file I/O routines.

• system_fopenRO opens a file for read-only access.

• system_fopenRW opens a file for read-write access, creating the file if necessary.

• system_fopenWA opens a file for write-append access, creating the file if necessary.

• system_fclose closes a file.

• system_fread reads from a file.

• system_fwrite writes to a file.

• system_fwrite_atomic locks the given file before writing to it. This avoids interference between simultaneous writes by multiple processes or threads.