kern/include/syscall.h

   1 #ifndef ROS_KERN_SYSCALL_H
   2 #define ROS_KERN_SYSCALL_H
   3 #ifndef ROS_KERNEL
   4 # error "This is ROS kernel header; user programs should not #include it"
   5 #endif
   6
   7 #include <ros/common.h>
   8 #include <process.h>
   9
  10 #define SYSTRACE_ON                                     0x01
  11 #define SYSTRACE_LOUD                           0x02
  12 #define SYSTRACE_ALLPROC                        0x04
  13
  14 #define MAX_NUM_TRACED                          10
  15 #define MAX_SYSTRACES                           1024
  16
  17 #define SYSCALL_STRLEN                          128
  18
  19 #define MAX_ASRC_BATCH                          10
  20
  21 #define SYSTR_RECORD_SZ                         256
  22 #define SYSTR_BUF_SZ                            PGSIZE
  23 #define SYSTR_PRETTY_BUF_SZ                     (SYSTR_BUF_SZ -                            \
  24                                      sizeof(struct systrace_record))
  25 struct systrace_record {
  26         struct systrace_record_anon {
  27                 uint64_t                start_timestamp, end_timestamp;
  28                 uintreg_t               syscallno;
  29                 uintreg_t               arg0;
  30                 uintreg_t               arg1;
  31                 uintreg_t               arg2;
  32                 uintreg_t               arg3;
  33                 uintreg_t               arg4;
  34                 uintreg_t               arg5;
  35                 uintreg_t               retval;
  36                 int                             pid;
  37                 uint32_t                coreid;
  38                 uint32_t                vcoreid;
  39                 char                    *pretty_buf;
  40                 uint8_t                 datalen;
  41         };
  42         uint8_t                 data[SYSTR_RECORD_SZ - sizeof(struct systrace_record_anon)];
  43 };
  44
  45 /* Syscall table */
  46 typedef intreg_t (*syscall_t)(struct proc *, uintreg_t, uintreg_t, uintreg_t,
  47                               uintreg_t, uintreg_t, uintreg_t);
  48 struct sys_table_entry {
  49         syscall_t call;
  50         char *name;
  51 };
  52 extern const struct sys_table_entry syscall_table[];
  53 extern const int max_syscall;
  54 /* Syscall invocation */
  55 void prep_syscalls(struct proc *p, struct syscall *sysc, unsigned int nr_calls);
  56 void run_local_syscall(struct syscall *sysc);
  57 intreg_t syscall(struct proc *p, uintreg_t sc_num, uintreg_t a0, uintreg_t a1,
  58                  uintreg_t a2, uintreg_t a3, uintreg_t a4, uintreg_t a5);
  59 void set_errno(int errno);
  60 int get_errno(void);
  61 void unset_errno(void);
  62 void set_errstr(char *errstr, ...);
  63 char *current_errstr(void);
  64 struct errbuf *get_cur_errbuf(void);
  65 void set_cur_errbuf(struct errbuf *ebuf);
  66 char *get_cur_genbuf(void);
  67 void __signal_syscall(struct syscall *sysc, struct proc *p);
  68
  69 /* Tracing functions */
  70 void systrace_start(bool silent);
  71 void systrace_stop(void);
  72 int systrace_reg(bool all, struct proc *p);
  73 int systrace_dereg(bool all, struct proc *p);
  74 void systrace_print(bool all, struct proc *p);
  75 void systrace_clear_buffer(void);
  76
  77 /* Utility */
  78 bool syscall_uses_fd(struct syscall *sysc, int fd);
  79 void print_sysc(struct proc *p, struct syscall *sysc);
  80
  81 #endif /* !ROS_KERN_SYSCALL_H */