key.c File Reference

#include <kernel/fs/key.h>
#include <kernel/cpu/syscalls.h>
#include <kernel/drivers/rand.h>
#include <kernel/log/panic.h>
#include <kernel/sched/thread.h>
#include <kernel/sched/timer.h>
#include <kernel/sync/rwlock.h>
#include <errno.h>
#include <stdlib.h>

Go to the source code of this file.

Functions
static key_t	key_generate (void)
static void	key_timer_handler (interrupt_frame_t *frame, cpu_t *self)
void	key_init (void)
	Initializes the key subsystem.
uint64_t	key_share (key_t *key, file_t *file, clock_t timeout)
	Generates a key that can be used to retrieve the file within the specified timeout.
	SYSCALL_DEFINE (SYS_SHARE, uint64_t, key_t *key, fd_t fd, clock_t timeout)
file_t *	key_claim (key_t *key)
	Claims a shared file using the provided key.
	SYSCALL_DEFINE (SYS_CLAIM, fd_t, key_t *key)

Variables
static map_t	keyMap
static list_t	keyList
static rwlock_t	keyLock

Function Documentation

key_generate()

static key_t key_generate ( void  )

static

Definition at line 17 of file key.c.

References ERR, keyLock, keyMap, map_get(), map_key_buffer(), NULL, panic(), rand_gen(), and RWLOCK_READ_SCOPE.

Referenced by key_share().

key_timer_handler()

static void key_timer_handler ( interrupt_frame_t *  frame, cpu_t *  self  )

static

Definition at line 35 of file key.c.

References DEREF, key_entry_t::entry, key_entry_t::expiry, key_entry_t::file, free(), key_entry_t::key, keyList, keyLock, keyMap, LIST_FOR_EACH_SAFE, list_remove(), map_key_buffer(), map_remove(), RWLOCK_WRITE_SCOPE, and timer_uptime().

SYSCALL_DEFINE() [1/2]

SYSCALL_DEFINE	(	SYS_CLAIM	,
		fd_t	,
		key_t *	key
	)

Definition at line 177 of file key.c.

References DEREF_DEFER, EFAULT, ERR, errno, file, key_claim(), NULL, thread_t::process, sched_thread(), thread_copy_from_user(), vfs_ctx_alloc_fd(), and process_t::vfsCtx.

SYSCALL_DEFINE() [2/2]

SYSCALL_DEFINE	(	SYS_SHARE	,
		uint64_t	,
		key_t *	key,
		fd_t	fd,
		clock_t	timeout
	)

Definition at line 119 of file key.c.

References DEREF_DEFER, EBADF, EFAULT, ERR, errno, file, key_share(), NULL, thread_t::process, sched_thread(), process_t::space, space_check_access(), thread_copy_to_user(), vfs_ctx_get_file(), and process_t::vfsCtx.

Variable Documentation

keyList

list_t keyList

static

Definition at line 14 of file key.c.

Referenced by key_claim(), key_init(), key_share(), and key_timer_handler().

keyLock

rwlock_t keyLock

static

Definition at line 15 of file key.c.

Referenced by key_claim(), key_generate(), key_init(), key_share(), and key_timer_handler().

keyMap

map_t keyMap

static

Definition at line 13 of file key.c.

Referenced by key_claim(), key_generate(), key_init(), key_share(), and key_timer_handler().