-/*
+/*
* 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_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;
};
#define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \
- .t = 0, .a = 0, .e = 0, .cl = 0 })
+ .t = 0, .a = 0, .e = 0, .cl = 0 })
static inline struct openflags of_read(struct openflags flags)
{
- flags.r = 1;
- return(flags);
+ flags.r = 1;
+ return flags;
}
static inline struct openflags of_write(struct openflags flags)
{
- flags.w = 1;
- return(flags);
+ flags.w = 1;
+ return flags;
}
static inline struct openflags of_rdwr(struct openflags flags)
{
- return(of_read(of_write(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);
+ return flags;
}
static inline struct openflags of_sync(struct openflags flags)
-{
- flags.s = 1;
- return(flags);
+{
+ flags.s = 1;
+ return flags;
}
static inline struct openflags of_create(struct openflags flags)
-{
- flags.c = 1;
- return(flags);
+{
+ flags.c = 1;
+ return flags;
}
-
+
static inline struct openflags of_trunc(struct openflags flags)
-{
- flags.t = 1;
- return(flags);
+{
+ flags.t = 1;
+ return flags;
}
-
+
static inline struct openflags of_append(struct openflags flags)
-{
- flags.a = 1;
- return(flags);
+{
+ flags.a = 1;
+ return flags;
}
-
+
static inline struct openflags of_excl(struct openflags flags)
-{
- flags.e = 1;
- return(flags);
+{
+ flags.e = 1;
+ return flags;
}
-
+
static inline struct openflags of_cloexec(struct openflags flags)
-{
- flags.cl = 1;
- return(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_sigio_async(int master, int slave);
+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, void *buf, int count);
-extern int os_file_size(char *file, long long *size_out);
+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);
+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);
extern void os_usr1_process(int pid);
+extern long os_ptrace_ldt(long pid, long addr, long data);
+
extern int os_getpid(void);
+extern int os_getpgrp(void);
-extern int os_map_memory(void *virt, int fd, unsigned long off,
+#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,
+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);
+extern void os_usr1_signal(int on);
+
+/* 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);
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+/* 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
git://git.onelab.eu / linux-2.6.git / blobdiff