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#ifndef GLUTEN_H
#define GLUTEN_H
#include <stdint.h>
#include <stdbool.h>
#define MAX_FD_INJECTED 10
enum ns_spec_type {
NS_NONE,
NS_SPEC_TARGET,
NS_SPEC_PID,
NS_SPEC_PATH,
};
struct ns_spec {
enum ns_spec_type type;
union {
pid_t pid;
char *path;
};
};
/*
* enum ns_type - Type of namespaces
*/
enum ns_type {
NS_CGROUP,
NS_IPC,
NS_NET,
NS_MOUNT,
NS_PID,
NS_TIME,
NS_USER,
NS_UTS,
};
/*
* struct op_context - Description of the context where the call needs to be executed
* @ns: Descrption of the each namespace where the call needs to be executed
*/
struct op_context {
struct ns_spec ns[sizeof(enum ns_type)];
};
enum op_type {
OP_CALL,
OP_BLOCK,
OP_CONT,
OP_INJECT,
OP_INJECT_A,
OP_RETURN,
OP_COPY_ARGS,
OP_END,
OP_CMP,
OP_RESOLVEDFD,
};
enum value_type {
IMMEDIATE,
REFERENCE,
};
struct op_call {
long nr;
bool has_ret;
void *args[6];
struct op_context context;
uint16_t ret_off;
};
struct op_block {
int32_t error;
};
struct op_continue {
bool cont;
};
struct op_return {
enum value_type type;
union {
int64_t value;
uint16_t value_off;
};
};
struct fd_type {
enum value_type type;
union {
uint32_t fd;
uint16_t fd_off;
};
};
struct op_inject {
struct fd_type newfd;
struct fd_type oldfd;
};
struct copy_arg {
uint16_t args_off;
enum value_type type;
size_t size;
};
struct op_copy_args {
struct copy_arg args[6];
};
struct op_cmp {
uint16_t s1_off;
uint16_t s2_off;
size_t size;
unsigned int jmp;
};
struct op_resolvedfd {
uint16_t fd_off;
uint16_t path_off;
size_t path_size;
unsigned int jmp;
};
struct op {
enum op_type type;
union {
struct op_call call;
struct op_block block;
struct op_continue cont;
struct op_return ret;
struct op_inject inj;
struct op_copy_args copy;
struct op_cmp cmp;
struct op_resolvedfd resfd;
};
};
#endif /* GLUTEN_H */
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