64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
|
// SPDX-License-Identifier: LGPL-2.1
|
||
|
|
#include <linux/futex.h>
|
||
|
|
|
||
|
|
#ifndef FUTEX_WAIT_BITSET
|
||
|
|
#define FUTEX_WAIT_BITSET 9
|
||
|
|
#endif
|
||
|
|
#ifndef FUTEX_WAKE_BITSET
|
||
|
|
#define FUTEX_WAKE_BITSET 10
|
||
|
|
#endif
|
||
|
|
#ifndef FUTEX_WAIT_REQUEUE_PI
|
||
|
|
#define FUTEX_WAIT_REQUEUE_PI 11
|
||
|
|
#endif
|
||
|
|
#ifndef FUTEX_CMP_REQUEUE_PI
|
||
|
|
#define FUTEX_CMP_REQUEUE_PI 12
|
||
|
|
#endif
|
||
|
|
#ifndef FUTEX_CLOCK_REALTIME
|
||
|
|
#define FUTEX_CLOCK_REALTIME 256
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct syscall_arg *arg)
|
||
|
|
{
|
||
|
|
bool show_prefix = arg->show_string_prefix;
|
||
|
|
const char *prefix = "FUTEX_";
|
||
|
|
enum syscall_futex_args {
|
||
|
|
SCF_UADDR = (1 << 0),
|
||
|
|
SCF_OP = (1 << 1),
|
||
|
|
SCF_VAL = (1 << 2),
|
||
|
|
SCF_TIMEOUT = (1 << 3),
|
||
|
|
SCF_UADDR2 = (1 << 4),
|
||
|
|
SCF_VAL3 = (1 << 5),
|
||
|
|
};
|
||
|
|
int op = arg->val;
|
||
|
|
int cmd = op & FUTEX_CMD_MASK;
|
||
|
|
size_t printed = 0;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
#define P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, "%s%s", show_prefix ? prefix : "", #n);
|
||
|
|
P_FUTEX_OP(WAIT); arg->mask |= SCF_VAL3|SCF_UADDR2; break;
|
||
|
|
P_FUTEX_OP(WAKE); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
|
||
|
|
P_FUTEX_OP(FD); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
|
||
|
|
P_FUTEX_OP(REQUEUE); arg->mask |= SCF_VAL3|SCF_TIMEOUT; break;
|
||
|
|
P_FUTEX_OP(CMP_REQUEUE); arg->mask |= SCF_TIMEOUT; break;
|
||
|
|
P_FUTEX_OP(CMP_REQUEUE_PI); arg->mask |= SCF_TIMEOUT; break;
|
||
|
|
P_FUTEX_OP(WAKE_OP); break;
|
||
|
|
P_FUTEX_OP(LOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
|
||
|
|
P_FUTEX_OP(UNLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
|
||
|
|
P_FUTEX_OP(TRYLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2; break;
|
||
|
|
P_FUTEX_OP(WAIT_BITSET); arg->mask |= SCF_UADDR2; break;
|
||
|
|
P_FUTEX_OP(WAKE_BITSET); arg->mask |= SCF_UADDR2; break;
|
||
|
|
P_FUTEX_OP(WAIT_REQUEUE_PI); break;
|
||
|
|
default: printed = scnprintf(bf, size, "%#x", cmd); break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (op & FUTEX_PRIVATE_FLAG)
|
||
|
|
printed += scnprintf(bf + printed, size - printed, "|%s%s", show_prefix ? prefix : "", "PRIVATE_FLAG");
|
||
|
|
|
||
|
|
if (op & FUTEX_CLOCK_REALTIME)
|
||
|
|
printed += scnprintf(bf + printed, size - printed, "|%s%s", show_prefix ? prefix : "", "CLOCK_REALTIME");
|
||
|
|
|
||
|
|
return printed;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op
|