317 lines
10 KiB
C
317 lines
10 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2015 Anton Ivanov (aivanov@{brocade.com,kot-begemot.co.uk})
|
||
|
|
* Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de)
|
||
|
|
* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
|
||
|
|
* Licensed under the GPL
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __OS_H__
|
||
|
|
#define __OS_H__
|
||
|
|
|
||
|
|
#include <stdarg.h>
|
||
|
|
#include <irq_user.h>
|
||
|
|
#include <longjmp.h>
|
||
|
|
#include <mm_id.h>
|
||
|
|
|
||
|
|
#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 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 */
|
||
|
|
|
||
|
|
#ifdef CONFIG_64BIT
|
||
|
|
#define OS_LIB_PATH "/usr/lib64/"
|
||
|
|
#else
|
||
|
|
#define OS_LIB_PATH "/usr/lib/"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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 int os_set_exec_close(int fd);
|
||
|
|
extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
|
||
|
|
extern int os_get_ifname(int fd, char *namebuf);
|
||
|
|
extern int os_set_slip(int fd);
|
||
|
|
extern int os_mode_fd(int fd, int mode);
|
||
|
|
extern int os_fsync_file(int fd);
|
||
|
|
|
||
|
|
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_sync_file(int fd);
|
||
|
|
extern int os_file_size(const char *file, unsigned long long *size_out);
|
||
|
|
extern int os_pread_file(int fd, void *buf, int len, unsigned long long offset);
|
||
|
|
extern int os_pwrite_file(int fd, const void *buf, int count, unsigned long long offset);
|
||
|
|
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);
|
||
|
|
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(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(const char *name);
|
||
|
|
extern int os_file_type(char *file);
|
||
|
|
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,
|
||
|
|
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);
|
||
|
|
extern unsigned os_major(unsigned long long dev);
|
||
|
|
extern unsigned os_minor(unsigned long long dev);
|
||
|
|
extern unsigned long long os_makedev(unsigned major, unsigned minor);
|
||
|
|
|
||
|
|
/* start_up.c */
|
||
|
|
extern void os_early_checks(void);
|
||
|
|
extern void os_check_bugs(void);
|
||
|
|
extern void check_host_supports_tls(int *supports_tls, int *tls_min);
|
||
|
|
|
||
|
|
/* 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_alarm_process(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 int os_getpid(void);
|
||
|
|
extern int os_getpgrp(void);
|
||
|
|
|
||
|
|
extern void init_new_thread_signals(void);
|
||
|
|
|
||
|
|
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);
|
||
|
|
extern int os_mincore(void *addr, unsigned long len);
|
||
|
|
|
||
|
|
/* 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);
|
||
|
|
extern int run_helper_thread(int (*proc)(void *), void *arg,
|
||
|
|
unsigned int flags, unsigned long *stack_out);
|
||
|
|
extern int helper_wait(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 timer_set_signal_handler(void);
|
||
|
|
extern void set_sigstack(void *sig_stack, int size);
|
||
|
|
extern void remove_sigstack(void);
|
||
|
|
extern void set_handler(int sig);
|
||
|
|
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 int os_is_signal_stack(void);
|
||
|
|
extern void deliver_alarm(void);
|
||
|
|
|
||
|
|
/* util.c */
|
||
|
|
extern void stack_protections(unsigned long address);
|
||
|
|
extern int raw(int fd);
|
||
|
|
extern void setup_machinename(char *machine_out);
|
||
|
|
extern void setup_hostinfo(char *buf, int len);
|
||
|
|
extern void os_dump_core(void) __attribute__ ((noreturn));
|
||
|
|
extern void um_early_printk(const char *s, unsigned int n);
|
||
|
|
extern void os_fix_helper_signals(void);
|
||
|
|
|
||
|
|
/* time.c */
|
||
|
|
extern void os_idle_sleep(unsigned long long nsecs);
|
||
|
|
extern int os_timer_create(void* timer);
|
||
|
|
extern int os_timer_set_interval(void* timer, void* its);
|
||
|
|
extern int os_timer_one_shot(int ticks);
|
||
|
|
extern long long os_timer_disable(void);
|
||
|
|
extern long os_timer_remain(void* timer);
|
||
|
|
extern void uml_idle_timer(void);
|
||
|
|
extern long long os_persistent_clock_emulation(void);
|
||
|
|
extern long long os_nsecs(void);
|
||
|
|
extern long long os_vnsecs(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 prot, int phys_fd,
|
||
|
|
unsigned long long offset, int done, void **data);
|
||
|
|
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, 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(struct uml_pt_regs *regs, unsigned long *aux_fp_regs);
|
||
|
|
extern int 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);
|
||
|
|
|
||
|
|
/* 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);
|
||
|
|
extern void sigio_broken(int fd, int read);
|
||
|
|
|
||
|
|
/* sys-x86_64/prctl.c */
|
||
|
|
extern int os_arch_prctl(int pid, int code, unsigned long *addr);
|
||
|
|
|
||
|
|
/* tty.c */
|
||
|
|
extern int get_pty(void);
|
||
|
|
|
||
|
|
/* sys-$ARCH/task_size.c */
|
||
|
|
extern unsigned long os_get_top_address(void);
|
||
|
|
|
||
|
|
long syscall(long number, ...);
|
||
|
|
|
||
|
|
#endif
|