/* SPDX-License-Identifier: GPL-2.0 *//* * 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) */ #ifndef __OS_H__#define __OS_H__ #include <irq_user.h>#include <longjmp.h>#include <mm_id.h>/* This is to get size_t */#ifndef __UM_HOST__#include <linux/types.h>#else#include <sys/types.h>#endif #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 #define OS_SENDMSG_MAX_FDS 8 /* * 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_mode_fd(int fd, 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_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, long 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 int os_dup_file(int fd);extern void os_close_file(int fd);ssize_t os_rcv_fd_msg(int fd, int *fds, unsigned int n_fds, void *data, size_t data_len);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 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);extern int os_falloc_punch(int fd, unsigned long long offset, int count);extern int os_falloc_zeroes(int fd, unsigned long long offset, int count);extern int os_eventfd(unsigned int initval, int flags);extern int os_sendmsg_fds(int fd, const void *buf, unsigned int len, const int *fds, unsigned int fds_num);int os_poll(unsigned int n, const int *fds);void *os_mmap_rw_shared(int fd, size_t size);void *os_mremap_rw_shared(void *old_addr, size_t old_size, size_t new_size); /* 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);extern void get_host_cpu_features( void (*flags_helper_func)(char *line), void (*cache_helper_func)(char *line)); /* mem.c */extern int create_mem_file(unsigned long long len); /* tlb.c */extern void report_enomem(void); /* process.c */pid_t os_reap_child(void);extern void os_alarm_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 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); void os_set_pdeathsig(void); int os_futex_wait(void *uaddr, unsigned int val);int os_futex_wake(void *uaddr); /* 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); struct os_helper_thread;int os_run_helper_thread(struct os_helper_thread **td_out, void *(*routine)(void *), void *arg);void os_kill_helper_thread(struct os_helper_thread *td);void os_fix_helper_thread_signals(void); /* 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 set_handler(int sig);extern void send_sigio_to_self(void);extern int change_sig(int signal, int on);extern void block_signals(void);extern void unblock_signals(void);extern int um_get_signals(void);extern int um_set_signals(int enable);extern int um_set_signals_trace(int enable);extern void deliver_alarm(void);extern void register_pm_wake_signal(void);extern void block_signals_hard(void);extern void unblock_signals_hard(void);extern void mark_sigio_pending(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 ssize_t os_getrandom(void *buf, size_t len, unsigned int flags);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);extern void os_info(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));extern void os_warn(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); /* time.c */void os_idle_prepare(void);extern void os_idle_sleep(void);extern int os_timer_create(void);extern int os_timer_set_interval(int cpu, unsigned long long nsecs);extern int os_timer_one_shot(int cpu, unsigned long long nsecs);extern void os_timer_disable(int cpu);extern long long os_persistent_clock_emulation(void);extern long long os_nsecs(void); /* skas/mem.c */int syscall_stub_flush(struct mm_id *mm_idp);struct stub_syscall *syscall_stub_alloc(struct mm_id *mm_idp);void syscall_stub_dump_error(struct mm_id *mm_idp); int map(struct mm_id *mm_idp, unsigned long virt, unsigned long len, int prot, int phys_fd, unsigned long long offset);int unmap(struct mm_id *mm_idp, unsigned long addr, unsigned long len); /* skas/process.c */extern int is_skas_winch(int pid, int fd, void *data);extern int start_userspace(struct mm_id *mm_id);extern void userspace(struct uml_pt_regs *regs);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_epoll(void);extern void *os_epoll_get_data_pointer(int index);extern int os_epoll_triggered(int index, int events);extern int os_event_mask(enum um_irq_type irq_type);extern int os_setup_epoll(void);extern int os_add_epoll_fd(int events, int fd, void *data);extern int os_mod_epoll_fd(int events, int fd, void *data);extern int os_del_epoll_fd(int fd);extern void os_set_ioignore(void);extern void os_close_epoll_fd(void);extern void um_irqs_suspend(void);extern void um_irqs_resume(void); /* sigio.c */extern int add_sigio_fd(int fd);extern int ignore_sigio_fd(int fd);extern void maybe_sigio_broken(int fd);extern void sigio_broken(void);/* * unlocked versions for IRQ controller code. * * This is safe because it's used at suspend/resume and nothing * else is running. */extern int __add_sigio_fd(int fd);extern int __ignore_sigio_fd(int fd); /* tty.c */extern int get_pty(void); long syscall(long number, ...); /* irqflags tracing */extern void block_signals_trace(void);extern void unblock_signals_trace(void);extern void um_trace_signals_on(void);extern void um_trace_signals_off(void); /* time-travel */extern void deliver_time_travel_irqs(void); /* smp.c */#if IS_ENABLED(CONFIG_SMP)void os_init_smp(void);int os_start_cpu_thread(int cpu);void os_start_secondary(void *arg, jmp_buf *switch_buf);int os_send_ipi(int cpu, int vector);void os_local_ipi_enable(void);void os_local_ipi_disable(void);#else /* !CONFIG_SMP */static inline void os_local_ipi_enable(void) { }static inline void os_local_ipi_disable(void) { }#endif /* CONFIG_SMP */ #endif
/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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)
*/
#ifndef __OS_H__
#define __OS_H__
#include <irq_user.h>
#include <longjmp.h>
#include <mm_id.h>
/* This is to get size_t */
#ifndef __UM_HOST__
#include <linux/types.h>
#else
#include <sys/types.h>
#endif
#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
#define OS_SENDMSG_MAX_FDS 8
/*
* 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_mode_fd(int fd, 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_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, long 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 int os_dup_file(int fd);
extern void os_close_file(int fd);
ssize_t os_rcv_fd_msg(int fd, int *fds, unsigned int n_fds,
void *data, size_t data_len);
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 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);
extern int os_falloc_punch(int fd, unsigned long long offset, int count);
extern int os_falloc_zeroes(int fd, unsigned long long offset, int count);
extern int os_eventfd(unsigned int initval, int flags);
extern int os_sendmsg_fds(int fd, const void *buf, unsigned int len,
const int *fds, unsigned int fds_num);
int os_poll(unsigned int n, const int *fds);
void *os_mmap_rw_shared(int fd, size_t size);
void *os_mremap_rw_shared(void *old_addr, size_t old_size, size_t new_size);
/* 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);
extern void get_host_cpu_features(
void (*flags_helper_func)(char *line),
void (*cache_helper_func)(char *line));
/* mem.c */
extern int create_mem_file(unsigned long long len);
/* tlb.c */
extern void report_enomem(void);
/* process.c */
pid_t os_reap_child(void);
extern void os_alarm_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 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);
void os_set_pdeathsig(void);
int os_futex_wait(void *uaddr, unsigned int val);
int os_futex_wake(void *uaddr);
/* 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);
struct os_helper_thread;
int os_run_helper_thread(struct os_helper_thread **td_out,
void *(*routine)(void *), void *arg);
void os_kill_helper_thread(struct os_helper_thread *td);
void os_fix_helper_thread_signals(void);
/* 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 set_handler(int sig);
extern void send_sigio_to_self(void);
extern int change_sig(int signal, int on);
extern void block_signals(void);
extern void unblock_signals(void);
extern int um_get_signals(void);
extern int um_set_signals(int enable);
extern int um_set_signals_trace(int enable);
extern void deliver_alarm(void);
extern void register_pm_wake_signal(void);
extern void block_signals_hard(void);
extern void unblock_signals_hard(void);
extern void mark_sigio_pending(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 ssize_t os_getrandom(void *buf, size_t len, unsigned int flags);
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);
extern void os_info(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
extern void os_warn(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
/* time.c */
void os_idle_prepare(void);
extern void os_idle_sleep(void);
extern int os_timer_create(void);
extern int os_timer_set_interval(int cpu, unsigned long long nsecs);
extern int os_timer_one_shot(int cpu, unsigned long long nsecs);
extern void os_timer_disable(int cpu);
extern long long os_persistent_clock_emulation(void);
extern long long os_nsecs(void);
/* skas/mem.c */
int syscall_stub_flush(struct mm_id *mm_idp);
struct stub_syscall *syscall_stub_alloc(struct mm_id *mm_idp);
void syscall_stub_dump_error(struct mm_id *mm_idp);
int map(struct mm_id *mm_idp, unsigned long virt,
unsigned long len, int prot, int phys_fd,
unsigned long long offset);
int unmap(struct mm_id *mm_idp, unsigned long addr, unsigned long len);
/* skas/process.c */
extern int is_skas_winch(int pid, int fd, void *data);
extern int start_userspace(struct mm_id *mm_id);
extern void userspace(struct uml_pt_regs *regs);
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_epoll(void);
extern void *os_epoll_get_data_pointer(int index);
extern int os_epoll_triggered(int index, int events);
extern int os_event_mask(enum um_irq_type irq_type);
extern int os_setup_epoll(void);
extern int os_add_epoll_fd(int events, int fd, void *data);
extern int os_mod_epoll_fd(int events, int fd, void *data);
extern int os_del_epoll_fd(int fd);
extern void os_set_ioignore(void);
extern void os_close_epoll_fd(void);
extern void um_irqs_suspend(void);
extern void um_irqs_resume(void);
/* sigio.c */
extern int add_sigio_fd(int fd);
extern int ignore_sigio_fd(int fd);
extern void maybe_sigio_broken(int fd);
extern void sigio_broken(void);
/*
* unlocked versions for IRQ controller code.
*
* This is safe because it's used at suspend/resume and nothing
* else is running.
*/
extern int __add_sigio_fd(int fd);
extern int __ignore_sigio_fd(int fd);
/* tty.c */
extern int get_pty(void);
long syscall(long number, ...);
/* irqflags tracing */
extern void block_signals_trace(void);
extern void unblock_signals_trace(void);
extern void um_trace_signals_on(void);
extern void um_trace_signals_off(void);
/* time-travel */
extern void deliver_time_travel_irqs(void);
/* smp.c */
#if IS_ENABLED(CONFIG_SMP)
void os_init_smp(void);
int os_start_cpu_thread(int cpu);
void os_start_secondary(void *arg, jmp_buf *switch_buf);
int os_send_ipi(int cpu, int vector);
void os_local_ipi_enable(void);
void os_local_ipi_disable(void);
#else /* !CONFIG_SMP */
static inline void os_local_ipi_enable(void) { }
static inline void os_local_ipi_disable(void) { }
#endif /* CONFIG_SMP */
#endif