347 строки
11 KiB
C
347 строки
11 KiB
C
/*
|
|
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#ifndef __OS_H__
|
|
#define __OS_H__
|
|
|
|
#include "uml-config.h"
|
|
#include "asm/types.h"
|
|
#include "../os/include/file.h"
|
|
#include "sysdep/ptrace.h"
|
|
#include "kern_util.h"
|
|
#include "skas/mm_id.h"
|
|
#include "irq_user.h"
|
|
#include "sysdep/tls.h"
|
|
#include "sysdep/archsetjmp.h"
|
|
|
|
#define OS_TYPE_FILE 1
|
|
#define OS_TYPE_DIR 2
|
|
#define OS_TYPE_SYMLINK 3
|
|
#define OS_TYPE_CHARDEV 4
|
|
#define OS_TYPE_BLOCKDEV 5
|
|
#define OS_TYPE_FIFO 6
|
|
#define OS_TYPE_SOCK 7
|
|
|
|
/* os_access() flags */
|
|
#define OS_ACC_F_OK 0 /* Test for existence. */
|
|
#define OS_ACC_X_OK 1 /* Test for execute permission. */
|
|
#define OS_ACC_W_OK 2 /* Test for write permission. */
|
|
#define OS_ACC_R_OK 4 /* Test for read permission. */
|
|
#define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */
|
|
|
|
/*
|
|
* types taken from stat_file() in hostfs_user.c
|
|
* (if they are wrong here, they are wrong there...).
|
|
*/
|
|
struct uml_stat {
|
|
int ust_dev; /* device */
|
|
unsigned long long ust_ino; /* inode */
|
|
int ust_mode; /* protection */
|
|
int ust_nlink; /* number of hard links */
|
|
int ust_uid; /* user ID of owner */
|
|
int ust_gid; /* group ID of owner */
|
|
unsigned long long ust_size; /* total size, in bytes */
|
|
int ust_blksize; /* blocksize for filesystem I/O */
|
|
unsigned long long ust_blocks; /* number of blocks allocated */
|
|
unsigned long ust_atime; /* time of last access */
|
|
unsigned long ust_mtime; /* time of last modification */
|
|
unsigned long ust_ctime; /* time of last change */
|
|
};
|
|
|
|
struct openflags {
|
|
unsigned int r : 1;
|
|
unsigned int w : 1;
|
|
unsigned int s : 1; /* O_SYNC */
|
|
unsigned int c : 1; /* O_CREAT */
|
|
unsigned int t : 1; /* O_TRUNC */
|
|
unsigned int a : 1; /* O_APPEND */
|
|
unsigned int e : 1; /* O_EXCL */
|
|
unsigned int cl : 1; /* FD_CLOEXEC */
|
|
};
|
|
|
|
#define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \
|
|
.t = 0, .a = 0, .e = 0, .cl = 0 })
|
|
|
|
static inline struct openflags of_read(struct openflags flags)
|
|
{
|
|
flags.r = 1;
|
|
return flags;
|
|
}
|
|
|
|
static inline struct openflags of_write(struct openflags flags)
|
|
{
|
|
flags.w = 1;
|
|
return flags;
|
|
}
|
|
|
|
static inline struct openflags of_rdwr(struct openflags flags)
|
|
{
|
|
return of_read(of_write(flags));
|
|
}
|
|
|
|
static inline struct openflags of_set_rw(struct openflags flags, int r, int w)
|
|
{
|
|
flags.r = r;
|
|
flags.w = w;
|
|
return flags;
|
|
}
|
|
|
|
static inline struct openflags of_sync(struct openflags flags)
|
|
{
|
|
flags.s = 1;
|
|
return flags;
|
|
}
|
|
|
|
static inline struct openflags of_create(struct openflags flags)
|
|
{
|
|
flags.c = 1;
|
|
return flags;
|
|
}
|
|
|
|
static inline struct openflags of_trunc(struct openflags flags)
|
|
{
|
|
flags.t = 1;
|
|
return flags;
|
|
}
|
|
|
|
static inline struct openflags of_append(struct openflags flags)
|
|
{
|
|
flags.a = 1;
|
|
return flags;
|
|
}
|
|
|
|
static inline struct openflags of_excl(struct openflags flags)
|
|
{
|
|
flags.e = 1;
|
|
return flags;
|
|
}
|
|
|
|
static inline struct openflags of_cloexec(struct openflags flags)
|
|
{
|
|
flags.cl = 1;
|
|
return flags;
|
|
}
|
|
|
|
/* file.c */
|
|
extern int os_stat_file(const char *file_name, struct uml_stat *buf);
|
|
extern int os_stat_fd(const int fd, struct uml_stat *buf);
|
|
extern int os_access(const char *file, int mode);
|
|
extern void os_print_error(int error, const char* str);
|
|
extern int os_get_exec_close(int fd, int *close_on_exec);
|
|
extern int os_set_exec_close(int fd, int close_on_exec);
|
|
extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
|
|
extern int os_window_size(int fd, int *rows, int *cols);
|
|
extern int os_new_tty_pgrp(int fd, int pid);
|
|
extern int os_get_ifname(int fd, char *namebuf);
|
|
extern int os_set_slip(int fd);
|
|
extern int os_set_owner(int fd, int pid);
|
|
extern int os_mode_fd(int fd, int mode);
|
|
|
|
extern int os_seek_file(int fd, __u64 offset);
|
|
extern int os_open_file(char *file, struct openflags flags, int mode);
|
|
extern int os_read_file(int fd, void *buf, int len);
|
|
extern int os_write_file(int fd, const void *buf, int count);
|
|
extern int os_file_size(char *file, unsigned long long *size_out);
|
|
extern int os_file_modtime(char *file, unsigned long *modtime);
|
|
extern int os_pipe(int *fd, int stream, int close_on_exec);
|
|
extern int os_set_fd_async(int fd, int owner);
|
|
extern int os_clear_fd_async(int fd);
|
|
extern int os_set_fd_block(int fd, int blocking);
|
|
extern int os_accept_connection(int fd);
|
|
extern int os_create_unix_socket(char *file, int len, int close_on_exec);
|
|
extern int os_shutdown_socket(int fd, int r, int w);
|
|
extern void os_close_file(int fd);
|
|
extern int os_rcv_fd(int fd, int *helper_pid_out);
|
|
extern int create_unix_socket(char *file, int len, int close_on_exec);
|
|
extern int os_connect_socket(char *name);
|
|
extern int os_file_type(char *file);
|
|
extern int os_file_mode(char *file, struct openflags *mode_out);
|
|
extern int os_lock_file(int fd, int excl);
|
|
extern void os_flush_stdout(void);
|
|
extern int os_stat_filesystem(char *path, long *bsize_out,
|
|
long long *blocks_out, long long *bfree_out,
|
|
long long *bavail_out, long long *files_out,
|
|
long long *ffree_out, void *fsid_out,
|
|
int fsid_size, long *namelen_out,
|
|
long *spare_out);
|
|
extern int os_change_dir(char *dir);
|
|
extern int os_fchange_dir(int fd);
|
|
|
|
/* start_up.c */
|
|
extern void os_early_checks(void);
|
|
extern int can_do_skas(void);
|
|
extern void os_check_bugs(void);
|
|
extern void check_host_supports_tls(int *supports_tls, int *tls_min);
|
|
|
|
/* Make sure they are clear when running in TT mode. Required by
|
|
* SEGV_MAYBE_FIXABLE */
|
|
#ifdef UML_CONFIG_MODE_SKAS
|
|
#define clear_can_do_skas() do { ptrace_faultinfo = proc_mm = 0; } while (0)
|
|
#else
|
|
#define clear_can_do_skas() do {} while (0)
|
|
#endif
|
|
|
|
/* mem.c */
|
|
extern int create_mem_file(unsigned long long len);
|
|
|
|
/* process.c */
|
|
extern unsigned long os_process_pc(int pid);
|
|
extern int os_process_parent(int pid);
|
|
extern void os_stop_process(int pid);
|
|
extern void os_kill_process(int pid, int reap_child);
|
|
extern void os_kill_ptraced_process(int pid, int reap_child);
|
|
#ifdef UML_CONFIG_MODE_TT
|
|
extern void os_usr1_process(int pid);
|
|
#endif
|
|
extern long os_ptrace_ldt(long pid, long addr, long data);
|
|
|
|
extern int os_getpid(void);
|
|
extern int os_getpgrp(void);
|
|
|
|
#ifdef UML_CONFIG_MODE_TT
|
|
extern void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int));
|
|
extern void stop(void);
|
|
#endif
|
|
extern void init_new_thread_signals(void);
|
|
extern int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr);
|
|
|
|
extern int os_map_memory(void *virt, int fd, unsigned long long off,
|
|
unsigned long len, int r, int w, int x);
|
|
extern int os_protect_memory(void *addr, unsigned long len,
|
|
int r, int w, int x);
|
|
extern int os_unmap_memory(void *addr, int len);
|
|
extern int os_drop_memory(void *addr, int length);
|
|
extern int can_drop_memory(void);
|
|
extern void os_flush_stdout(void);
|
|
|
|
/* tt.c
|
|
* for tt mode only (will be deleted in future...)
|
|
*/
|
|
extern void forward_ipi(int fd, int pid);
|
|
extern void kill_child_dead(int pid);
|
|
extern int wait_for_stop(int pid, int sig, int cont_type, void *relay);
|
|
extern int protect_memory(unsigned long addr, unsigned long len,
|
|
int r, int w, int x, int must_succeed);
|
|
extern void forward_pending_sigio(int target);
|
|
extern int start_fork_tramp(void *arg, unsigned long temp_stack,
|
|
int clone_flags, int (*tramp)(void *));
|
|
|
|
/* uaccess.c */
|
|
extern unsigned long __do_user_copy(void *to, const void *from, int n,
|
|
void **fault_addr, void **fault_catcher,
|
|
void (*op)(void *to, const void *from,
|
|
int n), int *faulted_out);
|
|
|
|
/* execvp.c */
|
|
extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
|
|
/* helper.c */
|
|
extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
|
|
unsigned long *stack_out);
|
|
extern int run_helper_thread(int (*proc)(void *), void *arg,
|
|
unsigned int flags, unsigned long *stack_out,
|
|
int stack_order);
|
|
extern int helper_wait(int pid);
|
|
|
|
|
|
/* tls.c */
|
|
extern int os_set_thread_area(user_desc_t *info, int pid);
|
|
extern int os_get_thread_area(user_desc_t *info, int pid);
|
|
|
|
/* umid.c */
|
|
extern int umid_file_name(char *name, char *buf, int len);
|
|
extern int set_umid(char *name);
|
|
extern char *get_umid(void);
|
|
|
|
/* signal.c */
|
|
extern void set_sigstack(void *sig_stack, int size);
|
|
extern void remove_sigstack(void);
|
|
extern void set_handler(int sig, void (*handler)(int), int flags, ...);
|
|
extern int change_sig(int signal, int on);
|
|
extern void block_signals(void);
|
|
extern void unblock_signals(void);
|
|
extern int get_signals(void);
|
|
extern int set_signals(int enable);
|
|
|
|
/* trap.c */
|
|
extern void os_fill_handlinfo(struct kern_handlers h);
|
|
extern void do_longjmp(void *p, int val);
|
|
|
|
/* util.c */
|
|
extern void stack_protections(unsigned long address);
|
|
extern void task_protections(unsigned long address);
|
|
extern int raw(int fd);
|
|
extern void setup_machinename(char *machine_out);
|
|
extern void setup_hostinfo(void);
|
|
extern int setjmp_wrapper(void (*proc)(void *, void *), ...);
|
|
|
|
/* time.c */
|
|
#define BILLION (1000 * 1000 * 1000)
|
|
|
|
extern void switch_timers(int to_real);
|
|
extern void idle_sleep(int secs);
|
|
extern int set_interval(int is_virtual);
|
|
#ifdef CONFIG_MODE_TT
|
|
extern void enable_timer(void);
|
|
#endif
|
|
extern void disable_timer(void);
|
|
extern void uml_idle_timer(void);
|
|
extern unsigned long long os_nsecs(void);
|
|
|
|
/* skas/mem.c */
|
|
extern long run_syscall_stub(struct mm_id * mm_idp,
|
|
int syscall, unsigned long *args, long expected,
|
|
void **addr, int done);
|
|
extern long syscall_stub_data(struct mm_id * mm_idp,
|
|
unsigned long *data, int data_count,
|
|
void **addr, void **stub_addr);
|
|
extern int map(struct mm_id * mm_idp, unsigned long virt,
|
|
unsigned long len, int r, int w, int x, int phys_fd,
|
|
unsigned long long offset, int done, void **data);
|
|
extern int unmap(struct mm_id * mm_idp, void *addr, unsigned long len,
|
|
int done, void **data);
|
|
extern int protect(struct mm_id * mm_idp, unsigned long addr,
|
|
unsigned long len, int r, int w, int x, int done,
|
|
void **data);
|
|
|
|
/* skas/process.c */
|
|
extern int is_skas_winch(int pid, int fd, void *data);
|
|
extern int start_userspace(unsigned long stub_stack);
|
|
extern int copy_context_skas0(unsigned long stack, int pid);
|
|
extern void userspace(union uml_pt_regs *regs);
|
|
extern void map_stub_pages(int fd, unsigned long code,
|
|
unsigned long data, unsigned long stack);
|
|
extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void));
|
|
extern void switch_threads(jmp_buf *me, jmp_buf *you);
|
|
extern int start_idle_thread(void *stack, jmp_buf *switch_buf);
|
|
extern void initial_thread_cb_skas(void (*proc)(void *),
|
|
void *arg);
|
|
extern void halt_skas(void);
|
|
extern void reboot_skas(void);
|
|
|
|
/* irq.c */
|
|
extern int os_waiting_for_events(struct irq_fd *active_fds);
|
|
extern int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds);
|
|
extern void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg,
|
|
struct irq_fd *active_fds, struct irq_fd ***last_irq_ptr2);
|
|
extern void os_free_irq_later(struct irq_fd *active_fds,
|
|
int irq, void *dev_id);
|
|
extern int os_get_pollfd(int i);
|
|
extern void os_set_pollfd(int i, int fd);
|
|
extern void os_set_ioignore(void);
|
|
extern void init_irq_signals(int on_sigstack);
|
|
|
|
/* sigio.c */
|
|
extern int add_sigio_fd(int fd);
|
|
extern int ignore_sigio_fd(int fd);
|
|
extern void maybe_sigio_broken(int fd, int read);
|
|
|
|
/* skas/trap */
|
|
extern void sig_handler_common_skas(int sig, void *sc_ptr);
|
|
extern void user_signal(int sig, union uml_pt_regs *regs, int pid);
|
|
|
|
extern int os_arch_prctl(int pid, int code, unsigned long *addr);
|
|
|
|
#endif
|