sysctl.h

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#ifndef __SYS_SYSCTL_H__
#define __SYS_SYSCTL_H__
 
#include <stdbool.h>
 
/*
 * System Control Macros
 * SYSCTL_STR(PATH, FLAGS, DESCRIPTION, DEFAULT)
 * SYSCTL_INT(PATH, FLAGS, DESCRIPTION, DEFAULT)
 * SYSCTL_BOOL(PATH, FLAGS, DESCRIPTION, DEFAULT)
 * SYSCTL_END()
 */
 
#define SYSCTL_TYPE_INVALID     0
#define SYSCTL_TYPE_STR         1
#define SYSCTL_TYPE_INT         2
#define SYSCTL_TYPE_BOOL        3
 
#define SYSCTL_FLAG_RO          1
#define SYSCTL_FLAG_RW          2
 
#define SYSCTL_LIST \
    SYSCTL_STR(kern_ostype, SYSCTL_FLAG_RO, "OS Type", "Castor") \
    SYSCTL_INT(kern_hz, SYSCTL_FLAG_RW, "Tick frequency", 100) \
    SYSCTL_INT(time_tzadj, SYSCTL_FLAG_RW, "Time zone offset in seconds", 0) \
    SYSCTL_INT(log_syscall, SYSCTL_FLAG_RW, "Syscall log level", 1) \
    SYSCTL_INT(log_loader, SYSCTL_FLAG_RW, "Loader log level", 1) \
    SYSCTL_INT(log_vfs, SYSCTL_FLAG_RW, "VFS log level", 1) \
    SYSCTL_INT(log_o2fs, SYSCTL_FLAG_RW, "O2FS log level", 0) \
    SYSCTL_INT(log_ide, SYSCTL_FLAG_RW, "IDE log level", 0)
 
#define SYSCTL_STR_MAXLENGTH    128
 
typedef struct SysCtlString {
    char        path[64];
    char        value[SYSCTL_STR_MAXLENGTH];
} SysCtlString;
 
typedef struct SysCtlInt {
    char        path[64];
    int64_t     value;
} SysCtlInt;
 
typedef struct SysCtlBool {
    char        path[64];
    bool        value;
} SysCtlBool;
 
#define SYSCTL_STR(_PATH, _FLAGS, _DESCRIPTION, _DEFAULT) \
extern SysCtlString SYSCTL_##_PATH;
#define SYSCTL_INT(_PATH, _FLAGS, _DESCRIPTION, _DEFAULT) \
extern SysCtlInt SYSCTL_##_PATH;
#define SYSCTL_BOOL(_PATH, _FLAGS, _DESCRIPTION, _DEFAULT) \
extern SysCtlBool SYSCTL_##_PATH;
SYSCTL_LIST
#undef SYSCTL_STR
#undef SYSCTL_INT
#undef SYSCTL_BOOL
 
#define SYSCTL_GETSTR(_PATH) SYSCTL_##_PATH.value
#define SYSCTL_SETSTR(_PATH, _VALUE) strncpy(SYSCTL_##_PATH.value, _VALUE, SYSCTL_STR_MAXLENGTH);
#define SYSCTL_GETINT(_PATH) SYSCTL_##_PATH.value
#define SYSCTL_SETINT(_PATH, _VALUE) SYSCTL_##_PATH.value = _VALUE
#define SYSCTL_GETBOOL(_PATH) SYSCTL_##_PATH.value
#define SYSCTL_SETBOOL(_PATH, _VALUE) SYSCTL_##_PATH.value = _VALUE
 
uint64_t SysCtl_GetType(const char *node);
void *SysCtl_GetObject(const char *node);
uint64_t SysCtl_SetObject(const char *node, void *obj);
 
#endif /* __SYS_SYSCTL_H__ */