7.7 Dependencies on the Client Operating System

This section describes the interfaces which must be provided by the client operating system to the filesystem library.

These interfaces consist of:

oskit_get_call_context

Obtain information about client context.

fs_delay

Wait for a period of time to elapse.

fs_vprintf

Generate formatted output to stdout.

fs_vsprintf

Generate formatted output to a string.

fs_panic

Perform any cleanup and exit.

fs_gettime

Obtain the current time.

fs_tsleep

Wait for a wakeup on a channel or a timeout.

fs_wakeup

Awaken any threads waiting on a channel.

fs_malloc

Allocate memory.

fs_realloc

Resize a chunk of allocated memory.

fs_free

Free memory.

Default implementations of the fs_* functions are provided in liboskit_fs.

• 7.7.1 oskit_get_call_context: Get the caller's context
• 7.7.2 fs_delay: Wait for a period of time to elapse
• 7.7.3 fs_vprintf: Generate formatted output to stdout
• 7.7.4 fs_vsprintf: Generate formatted output to a string
• 7.7.5 fs_panic: Cleanup and exit
• 7.7.6 fs_gettime: Get the current time
• 7.7.7 fs_tsleep: Wait for a wakeup on a channel or for a timeout
• 7.7.8 fs_wakeup: Wakeup any threads waiting on this channel
• 7.7.9 fs_malloc: Allocate memory from the heap
• 7.7.10 fs_realloc: Resize a chunk of allocated memory
• 7.7.11 fs_free: Free a chunk of allocated memory