158 lines
4.9 KiB
C
158 lines
4.9 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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*/
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#pragma once
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#include <kernel/signal.h>
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#include <kernel/task.h>
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#include <toaru/tree.h>
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#define KERNEL_STACK_SIZE 0x8000
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typedef signed int pid_t;
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typedef unsigned int user_t;
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typedef unsigned int status_t;
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#define USER_ROOT_UID (user_t)0
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/* Unix waitpid() options */
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enum wait_option{
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WCONTINUED,
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WNOHANG,
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WUNTRACED
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};
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/* x86 task */
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typedef struct thread {
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uintptr_t esp; /* Stack Pointer */
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uintptr_t ebp; /* Base Pointer */
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uintptr_t eip; /* Instruction Pointer */
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uint8_t fpu_enabled;
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uint8_t fp_regs[512];
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uint8_t padding[32]; /* I don't know */
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page_directory_t * page_directory; /* Page Directory */
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} thread_t;
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/* Portable image struct */
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typedef struct image {
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size_t size; /* Image size */
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uintptr_t entry; /* Binary entry point */
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uintptr_t heap; /* Heap pointer */
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uintptr_t heap_actual; /* Actual heap location */
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uintptr_t stack; /* Process kernel stack */
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uintptr_t user_stack; /* User stack */
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uintptr_t start;
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uintptr_t shm_heap;
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volatile int lock[2];
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} image_t;
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/* Resizable descriptor table */
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typedef struct descriptor_table {
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fs_node_t ** entries;
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size_t length;
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size_t capacity;
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size_t refs;
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} fd_table_t;
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/* XXX */
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#define SIG_COUNT 10
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/* Signal Table */
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typedef struct signal_table {
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uintptr_t functions[NUMSIGNALS+1];
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} sig_table_t;
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/* Portable process struct */
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typedef struct process {
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pid_t id; /* Process ID (pid) */
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char * name; /* Process Name */
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char * description; /* Process description */
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user_t user; /* Effective user */
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int mask; /* Umask */
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char ** cmdline;
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pid_t group; /* Process thread group */
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pid_t job; /* Process job group */
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pid_t session; /* Session group */
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thread_t thread; /* Associated task information */
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tree_node_t * tree_entry; /* Process Tree Entry */
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image_t image; /* Binary image information */
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fs_node_t * wd_node; /* Working directory VFS node */
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char * wd_name; /* Working directory path name */
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fd_table_t * fds; /* File descriptor table */
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status_t status; /* Process status */
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sig_table_t signals; /* Signal table */
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uint8_t finished; /* Status indicator */
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uint8_t started;
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uint8_t running;
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struct regs * syscall_registers; /* Registers at interrupt */
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list_t * wait_queue;
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list_t * shm_mappings; /* Shared memory chunk mappings */
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list_t * signal_queue; /* Queued signals */
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thread_t signal_state;
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char * signal_kstack;
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node_t sched_node;
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node_t sleep_node;
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node_t * timed_sleep_node;
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uint8_t is_tasklet;
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volatile uint8_t sleep_interrupted;
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list_t * node_waits;
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int awoken_index;
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node_t * timeout_node;
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struct timeval start;
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uint8_t suspended;
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} process_t;
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typedef struct {
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unsigned long end_tick;
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unsigned long end_subtick;
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process_t * process;
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int is_fswait;
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} sleeper_t;
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extern void initialize_process_tree(void);
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extern process_t * spawn_process(volatile process_t * parent, int reuse_fds);
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extern void debug_print_process_tree(void);
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extern process_t * spawn_init(void);
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extern process_t * spawn_kidle(void);
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extern void set_process_environment(process_t * proc, page_directory_t * directory);
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extern void make_process_ready(process_t * proc);
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extern uint8_t process_available(void);
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extern process_t * next_ready_process(void);
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extern uint32_t process_append_fd(process_t * proc, fs_node_t * node);
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extern process_t * process_from_pid(pid_t pid);
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extern void delete_process(process_t * proc);
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process_t * process_get_parent(process_t * process);
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extern uint32_t process_move_fd(process_t * proc, int src, int dest);
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extern int process_is_ready(process_t * proc);
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extern void wakeup_sleepers(unsigned long seconds, unsigned long subseconds);
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extern void sleep_until(process_t * process, unsigned long seconds, unsigned long subseconds);
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extern volatile process_t * current_process;
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extern process_t * kernel_idle_task;
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extern list_t * process_list;
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extern int process_wait_nodes(process_t * process,fs_node_t * nodes[], int timeout);
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extern int process_alert_node(process_t * process, void * value);
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extern int process_awaken_from_fswait(process_t * process, int index);
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typedef void (*tasklet_t) (void *, char *);
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extern int create_kernel_tasklet(tasklet_t tasklet, char * name, void * argp);
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extern void release_directory(page_directory_t * dir);
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extern void release_directory_for_exec(page_directory_t * dir);
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extern void cleanup_process(process_t * proc, int retval);
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extern void reap_process(process_t * proc);
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extern int waitpid(int pid, int * status, int options);
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extern int is_valid_process(process_t * process);
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