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Create wrappers for uint64_t and int64_t for the tunables. While not

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strictly necessary, it is more convenient.
This commit is contained in:
Warner Losh 2016-04-15 03:09:55 +00:00
parent abea2d5a7e
commit 15be49f5a1
3 changed files with 86 additions and 0 deletions
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46
sys/kern/kern_environment.c
View File

@ -544,6 +544,36 @@ getenv_uint(const char *name, unsigned int *data)
return (rval);
}
/*
* Return an int64_t value from an environment variable.
*/
int
getenv_int64(const char *name, int64_t *data)
{
quad_t tmp;
int64_t rval;
rval = getenv_quad(name, &tmp);
if (rval)
*data = (int64_t) tmp;
return (rval);
}
/*
* Return an uint64_t value from an environment variable.
*/
int
getenv_uint64(const char *name, uint64_t *data)
{
quad_t tmp;
uint64_t rval;
rval = getenv_quad(name, &tmp);
if (rval)
*data = (uint64_t) tmp;
return (rval);
}
/*
* Return a long value from an environment variable.
*/
@ -649,6 +679,22 @@ tunable_ulong_init(void *data)
TUNABLE_ULONG_FETCH(d->path, d->var);
}
void
tunable_int64_init(void *data)
{
struct tunable_int64 *d = (struct tunable_int64 *)data;
TUNABLE_INT64_FETCH(d->path, d->var);
}
void
tunable_uint64_init(void *data)
{
struct tunable_uint64 *d = (struct tunable_uint64 *)data;
TUNABLE_UINT64_FETCH(d->path, d->var);
}
void
tunable_quad_init(void *data)
{

38
sys/sys/kernel.h
View File

@ -316,6 +316,44 @@ struct tunable_ulong {
#define TUNABLE_ULONG_FETCH(path, var) getenv_ulong((path), (var))
/*
* int64_t
*/
extern void tunable_int64_init(void *);
struct tunable_int64 {
const char *path;
int64_t *var;
};
#define TUNABLE_INT64(path, var) \
static struct tunable_int64 __CONCAT(__tunable_int64_, __LINE__) = { \
(path), \
(var), \
}; \
SYSINIT(__CONCAT(__Tunable_init_, __LINE__), \
SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_int64_init, \
&__CONCAT(__tunable_int64_, __LINE__))
#define TUNABLE_INT64_FETCH(path, var) getenv_int64((path), (var))
/*
* uint64_t
*/
extern void tunable_uint64_init(void *);
struct tunable_uint64 {
const char *path;
uint64_t *var;
};
#define TUNABLE_UINT64(path, var) \
static struct tunable_ulong __CONCAT(__tunable_uint64_, __LINE__) = { \
(path), \
(var), \
}; \
SYSINIT(__CONCAT(__Tunable_init_, __LINE__), \
SI_SUB_TUNABLES, SI_ORDER_MIDDLE, tunable_uint64_init, \
&__CONCAT(__tunable_uint64_, __LINE__))
#define TUNABLE_UINT64_FETCH(path, var) getenv_uint64((path), (var))
/*
* quad
*/

2
sys/sys/systm.h
View File

@ -322,6 +322,8 @@ int getenv_uint(const char *name, unsigned int *data);
int getenv_long(const char *name, long *data);
int getenv_ulong(const char *name, unsigned long *data);
int getenv_string(const char *name, char *data, int size);
int getenv_int64(const char *name, int64_t *data);
int getenv_uint64(const char *name, uint64_t *data);
int getenv_quad(const char *name, quad_t *data);
int kern_setenv(const char *name, const char *value);
int kern_unsetenv(const char *name);