Add support for tracing fork children

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 90 insertions, 0 deletions

diff --git a/common.h b/common.h
new file mode 100644
index 0000000..f027327
--- /dev/null
+++ b/common.h
@@ -0,0 +1,90 @@
+/* See LICENSE file for copyright and license details. */
+#if !defined __x86_64__ || defined __IPL32__
+# error "This program is only implemented for x86-64"
+#endif
+
+#include <sys/ptrace.h>
+#include <sys/syscall.h>
+#include <sys/uio.h>
+#include <sys/user.h>
+#include <sys/wait.h>
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/* Constants used in system calls */
+#include <sys/epoll.h>
+#include <sys/socket.h>
+#include <fcntl.h>
+
+#include "arg.h"
+#include "list-errnos.h"
+
+
+enum type {
+	Unknown,
+	Void,
+	Int,
+	UInt,
+	OInt,
+	XInt,
+	Long,
+	ULong,
+	OLong,
+	XLong,
+	LLong,
+	ULLong,
+	OLLong,
+	XLLong,
+	Ptr
+};
+
+enum state {
+	Normal,
+	Syscall
+};
+
+struct process {
+	pid_t pid;
+	struct process *next;
+	struct process *prev;
+	enum state state;
+
+	/* Syscall data */
+	unsigned long long int scall;
+	unsigned long long int args[6];
+	unsigned long long int ret;
+	enum type ret_type;
+};
+
+
+/* consts.c */
+const char *get_errno_name(int err);
+
+/* memory.c */
+char *get_string(pid_t pid, unsigned long int addr, size_t *lenp, const char **errorp);
+int get_struct(pid_t pid, unsigned long int addr, void *out, size_t size, const char **errorp);
+char *get_memory(pid_t pid, unsigned long int addr, size_t n, const char **errorp);
+char *escape_memory(char *str, size_t m);
+
+/* print.c */
+void print_systemcall(struct process *proc);
+void print_systemcall_exit(struct process *proc);
+
+/* process.c */
+void init_process_list(void);
+struct process *find_process(pid_t pid);
+struct process *add_process(pid_t pid, int trace_options);
+void remove_process(struct process *proc);
+
+/* util.c */
+void set_trace_output(FILE *fp);
+void tprintf(struct process *proc, const char *fmt, ...);
+_Noreturn void eprintf(const char *fmt, ...);