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Sysctl: Add common support for U8, U16 types

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Sponsored by:	EMC / Isilon Storage Division
This commit is contained in:
Conrad Meyer 2015-10-22 23:03:06 +00:00
parent c22afe52f4
commit c3220d0b6d
3 changed files with 136 additions and 0 deletions
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28
sbin/sysctl/sysctl.c
View File

@ -96,6 +96,8 @@ static int ctl_size[CTLTYPE+1] = {
[CTLTYPE_ULONG] = sizeof(u_long),
[CTLTYPE_S64] = sizeof(int64_t),
[CTLTYPE_U64] = sizeof(uint64_t),
[CTLTYPE_U8] = sizeof(uint8_t),
[CTLTYPE_U16] = sizeof(uint16_t),
};
static const char *ctl_typename[CTLTYPE+1] = {
@ -105,6 +107,8 @@ static const char *ctl_typename[CTLTYPE+1] = {
[CTLTYPE_ULONG] = "unsigned long",
[CTLTYPE_S64] = "int64_t",
[CTLTYPE_U64] = "uint64_t",
[CTLTYPE_U8] = "uint8_t",
[CTLTYPE_U16] = "uint16_t",
};
static void
@ -221,6 +225,8 @@ parse(const char *string, int lineno)
int len, i, j;
const void *newval;
const char *newvalstr = NULL;
uint8_t u8val;
uint16_t u16val;
int intval;
unsigned int uintval;
long longval;
@ -322,6 +328,8 @@ parse(const char *string, int lineno)
}
switch (kind & CTLTYPE) {
case CTLTYPE_U8:
case CTLTYPE_U16:
case CTLTYPE_INT:
case CTLTYPE_UINT:
case CTLTYPE_LONG:
@ -345,6 +353,16 @@ parse(const char *string, int lineno)
errno = 0;
switch (kind & CTLTYPE) {
case CTLTYPE_U8:
u8val = (uint8_t)strtoul(newvalstr, &endptr, 0);
newval = &u8val;
newsize = sizeof(u8val);
break;
case CTLTYPE_U16:
u16val = (uint16_t)strtoul(newvalstr, &endptr, 0);
newval = &u16val;
newsize = sizeof(u16val);
break;
case CTLTYPE_INT:
if (strncmp(fmt, "IK", 2) == 0)
intval = strIKtoi(newvalstr, &endptr, fmt);
@ -890,6 +908,8 @@ show_var(int *oid, int nlen)
free(oval);
return (0);
case CTLTYPE_U8:
case CTLTYPE_U16:
case CTLTYPE_INT:
case CTLTYPE_UINT:
case CTLTYPE_LONG:
@ -902,6 +922,14 @@ show_var(int *oid, int nlen)
sep1 = "";
while (len >= intlen) {
switch (kind & CTLTYPE) {
case CTLTYPE_U8:
umv = *(uint8_t *)p;
mv = *(int8_t *)p;
break;
case CTLTYPE_U16:
umv = *(uint16_t *)p;
mv = *(int16_t *)p;
break;
case CTLTYPE_INT:
case CTLTYPE_UINT:
umv = *(u_int *)p;

64
sys/kern/kern_sysctl.c
View File

@ -1127,6 +1127,70 @@ static SYSCTL_NODE(_sysctl, 5, oiddescr, CTLFLAG_RD|CTLFLAG_MPSAFE|CTLFLAG_CAPRD
* Default "handler" functions.
*/
/*
* Handle an int8_t, signed or unsigned.
* Two cases:
* a variable: point arg1 at it.
* a constant: pass it in arg2.
*/
int
sysctl_handle_8(SYSCTL_HANDLER_ARGS)
{
int8_t tmpout;
int error = 0;
/*
* Attempt to get a coherent snapshot by making a copy of the data.
*/
if (arg1)
tmpout = *(int8_t *)arg1;
else
tmpout = arg2;
error = SYSCTL_OUT(req, &tmpout, sizeof(tmpout));
if (error || !req->newptr)
return (error);
if (!arg1)
error = EPERM;
else
error = SYSCTL_IN(req, arg1, sizeof(tmpout));
return (error);
}
/*
* Handle an int16_t, signed or unsigned.
* Two cases:
* a variable: point arg1 at it.
* a constant: pass it in arg2.
*/
int
sysctl_handle_16(SYSCTL_HANDLER_ARGS)
{
int16_t tmpout;
int error = 0;
/*
* Attempt to get a coherent snapshot by making a copy of the data.
*/
if (arg1)
tmpout = *(int16_t *)arg1;
else
tmpout = arg2;
error = SYSCTL_OUT(req, &tmpout, sizeof(tmpout));
if (error || !req->newptr)
return (error);
if (!arg1)
error = EPERM;
else
error = SYSCTL_IN(req, arg1, sizeof(tmpout));
return (error);
}
/*
* Handle an int, signed or unsigned.
* Two cases:

44
sys/sys/sysctl.h
View File

@ -73,6 +73,8 @@ struct ctlname {
#define CTLTYPE_LONG 7 /* name describes a long */
#define CTLTYPE_ULONG 8 /* name describes an unsigned long */
#define CTLTYPE_U64 9 /* name describes an unsigned 64-bit number */
#define CTLTYPE_U8 0xa /* name describes an unsigned 8-bit number */
#define CTLTYPE_U16 0xb /* name describes an unsigned 16-bit number */
#define CTLFLAG_RD 0x80000000 /* Allow reads of variable */
#define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */
@ -188,6 +190,8 @@ struct sysctl_oid {
#define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
#define SYSCTL_OUT_STR(r, p) (r->oldfunc)(r, p, strlen(p) + 1)
int sysctl_handle_8(SYSCTL_HANDLER_ARGS);
int sysctl_handle_16(SYSCTL_HANDLER_ARGS);
int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS);
int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
@ -319,6 +323,46 @@ TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
__arg, len, sysctl_handle_string, "A", __DESCR(descr)); \
})
/* Oid for an unsigned 8-bit int. If ptr is NULL, val is returned. */
#define SYSCTL_NULL_U8_PTR ((unsigned *)NULL)
#define SYSCTL_U8(parent, nbr, name, access, ptr, val, descr) \
SYSCTL_OID(parent, nbr, name, \
CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
ptr, val, sysctl_handle_8, "CU", descr); \
CTASSERT((((access) & CTLTYPE) == 0 || \
((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8) && \
sizeof(uint8_t) == sizeof(*(ptr)))
#define SYSCTL_ADD_U8(ctx, parent, nbr, name, access, ptr, val, descr) \
({ \
uint8_t *__ptr = (ptr); \
CTASSERT(((access) & CTLTYPE) == 0 || \
((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8); \
sysctl_add_oid(ctx, parent, nbr, name, \
CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
__ptr, val, sysctl_handle_8, "CU", __DESCR(descr)); \
})
/* Oid for an unsigned 16-bit int. If ptr is NULL, val is returned. */
#define SYSCTL_NULL_U16_PTR ((unsigned *)NULL)
#define SYSCTL_U16(parent, nbr, name, access, ptr, val, descr) \
SYSCTL_OID(parent, nbr, name, \
CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
ptr, val, sysctl_handle_16, "SU", descr); \
CTASSERT((((access) & CTLTYPE) == 0 || \
((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16) && \
sizeof(uint16_t) == sizeof(*(ptr)))
#define SYSCTL_ADD_U16(ctx, parent, nbr, name, access, ptr, val, descr) \
({ \
uint16_t *__ptr = (ptr); \
CTASSERT(((access) & CTLTYPE) == 0 || \
((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16); \
sysctl_add_oid(ctx, parent, nbr, name, \
CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
__ptr, val, sysctl_handle_16, "SU", __DESCR(descr)); \
})
/* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */
#define SYSCTL_NULL_INT_PTR ((int *)NULL)
#define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \