Helper, check for the existence of local RKMS

[akaros.git] / kern / include / syscall.h

diff --git a/kern/include/syscall.h b/kern/include/syscall.h
index a195d72..223133f 100644 (file)
--- a/kern/include/syscall.h
+++ b/kern/include/syscall.h
@@ -14,21 +14,32 @@
 #define MAX_NUM_TRACED                         10
 #define MAX_SYSTRACES                          1024
 
+#define SYSCALL_STRLEN                         128
+
 #define MAX_ASRC_BATCH                         10
 
-/* Consider cache aligning this */
+#define SYSTR_RECORD_SZ                                256
+#define SYSTR_BUF_SZ                           PGSIZE
+#define SYSTR_PRETTY_BUF_SZ                    (SYSTR_BUF_SZ -                            \
+                                     sizeof(struct systrace_record))
 struct systrace_record {
-       uint64_t                timestamp;
-       uintreg_t               syscallno;
-       uintreg_t               arg0;
-       uintreg_t               arg1;
-       uintreg_t               arg2;
-       uintreg_t               arg3;
-       uintreg_t               arg4;
-       uintreg_t               arg5;
-       int                             pid;
-       uint32_t                coreid;
-       uint32_t                vcoreid;
+       struct systrace_record_anon {
+               uint64_t                start_timestamp, end_timestamp;
+               uintreg_t               syscallno;
+               uintreg_t               arg0;
+               uintreg_t               arg1;
+               uintreg_t               arg2;
+               uintreg_t               arg3;
+               uintreg_t               arg4;
+               uintreg_t               arg5;
+               uintreg_t               retval;
+               int                             pid;
+               uint32_t                coreid;
+               uint32_t                vcoreid;
+               char                    *pretty_buf;
+               uint8_t                 datalen;
+       };
+       uint8_t                 data[SYSTR_RECORD_SZ - sizeof(struct systrace_record_anon)];
 };
 
 /* Syscall table */
@@ -38,13 +49,16 @@ struct sys_table_entry {
        syscall_t call;
        char *name;
 };
-const static struct sys_table_entry syscall_table[];
+extern const struct sys_table_entry syscall_table[];
+extern const int max_syscall;
 /* Syscall invocation */
 void prep_syscalls(struct proc *p, struct syscall *sysc, unsigned int nr_calls);
 void run_local_syscall(struct syscall *sysc);
 intreg_t syscall(struct proc *p, uintreg_t sc_num, uintreg_t a0, uintreg_t a1,
                  uintreg_t a2, uintreg_t a3, uintreg_t a4, uintreg_t a5);
 void set_errno(int errno);
+int get_errno(void);
+void unset_errno(void);
 void set_errstr(char *errstr, ...);
 char *current_errstr(void);
 struct errbuf *get_cur_errbuf(void);
@@ -54,10 +68,15 @@ void __signal_syscall(struct syscall *sysc, struct proc *p);
 
 /* Tracing functions */
 void systrace_start(bool silent);
+int systrace_trace_pid(struct proc *p);
 void systrace_stop(void);
 int systrace_reg(bool all, struct proc *p);
 int systrace_dereg(bool all, struct proc *p);
 void systrace_print(bool all, struct proc *p);
 void systrace_clear_buffer(void);
 
+/* Utility */
+bool syscall_uses_fd(struct syscall *sysc, int fd);
+void print_sysc(struct proc *p, struct syscall *sysc);
+
 #endif /* !ROS_KERN_SYSCALL_H */