-/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.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 <stdarg.h>
#include "irq_user.h"
+#include "longjmp.h"
+#include "mm_id.h"
#include "sysdep/tls.h"
+#include "../os/include/file.h"
-#define OS_TYPE_FILE 1
-#define OS_TYPE_DIR 2
-#define OS_TYPE_SYMLINK 3
+#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
+
+#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 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_set_exec_close(int fd);
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_seek_file(int fd, unsigned long long offset);
+extern int os_open_file(const 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_file_size(const char *file, unsigned long long *size_out);
+extern int os_file_modtime(const 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_create_unix_socket(const 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_connect_socket(const char *name);
extern int os_file_type(char *file);
-extern int os_file_mode(char *file, struct openflags *mode_out);
+extern int os_file_mode(const 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,
/* start_up.c */
extern void os_early_checks(void);
-extern int can_do_skas(void);
+extern void can_do_skas(void);
extern void os_check_bugs(void);
-
-/* 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
+extern void check_host_supports_tls(int *supports_tls, int *tls_min);
/* mem.c */
extern int create_mem_file(unsigned long long len);
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 void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int));
-extern void init_new_thread_signals(int altstack);
-extern int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr);
+extern void init_new_thread_signals(void);
+extern int run_kernel_thread(int (*fn)(void *), void *arg, jmp_buf **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 void stop(void);
-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 **fault_addr, jmp_buf **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(void (*pre_exec)(void *), void *pre_data, char **argv);
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);
+ unsigned int flags, unsigned long *stack_out);
+extern int helper_wait(int pid, int nohang, char *pname);
/* tls.c */
extern char *get_umid(void);
/* signal.c */
+extern void timer_init(void);
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 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 void setup_hostinfo(char *buf, int len);
extern int setjmp_wrapper(void (*proc)(void *, void *), ...);
+extern void os_dump_core(void);
/* time.c */
-#define BILLION (1000 * 1000 * 1000)
-
-extern void switch_timers(int to_real);
-extern void idle_sleep(int secs);
-extern void enable_timer(void);
-extern void disable_timer(void);
-extern void user_time_init(void);
+extern void idle_sleep(unsigned long long nsecs);
+extern int set_interval(void);
+extern int timer_one_shot(int ticks);
+extern long long disable_timer(void);
extern void uml_idle_timer(void);
-extern unsigned long long os_nsecs(void);
+extern long long os_nsecs(void);
/* skas/mem.c */
extern long run_syscall_stub(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 len, int prot, int phys_fd,
unsigned long long offset, int done, void **data);
-extern int unmap(struct mm_id * mm_idp, void *addr, unsigned long len,
+extern int unmap(struct mm_id * mm_idp, unsigned long 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);
+ unsigned long len, unsigned int prot, 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 save_registers(int pid, struct uml_pt_regs *regs);
+extern void restore_registers(int pid, struct uml_pt_regs *regs);
+extern void userspace(struct 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, void **switch_buf_ptr,
- void **fork_buf_ptr, void (*handler)(int));
-extern void thread_wait(void *sw, void *fb);
-extern void switch_threads(void *me, void *next);
-extern int start_idle_thread(void *stack, void *switch_buf_ptr,
- void **fork_buf_ptr);
+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);
/* irq.c */
extern int os_waiting_for_events(struct irq_fd *active_fds);
-extern int os_isatty(int fd);
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 init_irq_signals(int on_sigstack);
/* sigio.c */
-extern void write_sigio_workaround(void);
-extern int add_sigio_fd(int fd, int read);
+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);
+
+/* sys-x86_64/prctl.c */
+extern int os_arch_prctl(int pid, int code, unsigned long *addr);
+
+/* tty.c */
+int get_pty(void);
#endif
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