1*4882a593Smuzhiyun // SPDX-License-Identifier: LGPL-2.1
2*4882a593Smuzhiyun #include <linux/futex.h>
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun #ifndef FUTEX_WAIT_BITSET
5*4882a593Smuzhiyun #define FUTEX_WAIT_BITSET 9
6*4882a593Smuzhiyun #endif
7*4882a593Smuzhiyun #ifndef FUTEX_WAKE_BITSET
8*4882a593Smuzhiyun #define FUTEX_WAKE_BITSET 10
9*4882a593Smuzhiyun #endif
10*4882a593Smuzhiyun #ifndef FUTEX_WAIT_REQUEUE_PI
11*4882a593Smuzhiyun #define FUTEX_WAIT_REQUEUE_PI 11
12*4882a593Smuzhiyun #endif
13*4882a593Smuzhiyun #ifndef FUTEX_CMP_REQUEUE_PI
14*4882a593Smuzhiyun #define FUTEX_CMP_REQUEUE_PI 12
15*4882a593Smuzhiyun #endif
16*4882a593Smuzhiyun #ifndef FUTEX_CLOCK_REALTIME
17*4882a593Smuzhiyun #define FUTEX_CLOCK_REALTIME 256
18*4882a593Smuzhiyun #endif
19*4882a593Smuzhiyun
syscall_arg__scnprintf_futex_op(char * bf,size_t size,struct syscall_arg * arg)20*4882a593Smuzhiyun static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct syscall_arg *arg)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun bool show_prefix = arg->show_string_prefix;
23*4882a593Smuzhiyun const char *prefix = "FUTEX_";
24*4882a593Smuzhiyun enum syscall_futex_args {
25*4882a593Smuzhiyun SCF_UADDR = (1 << 0),
26*4882a593Smuzhiyun SCF_OP = (1 << 1),
27*4882a593Smuzhiyun SCF_VAL = (1 << 2),
28*4882a593Smuzhiyun SCF_TIMEOUT = (1 << 3),
29*4882a593Smuzhiyun SCF_UADDR2 = (1 << 4),
30*4882a593Smuzhiyun SCF_VAL3 = (1 << 5),
31*4882a593Smuzhiyun };
32*4882a593Smuzhiyun int op = arg->val;
33*4882a593Smuzhiyun int cmd = op & FUTEX_CMD_MASK;
34*4882a593Smuzhiyun size_t printed = 0;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun switch (cmd) {
37*4882a593Smuzhiyun #define P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, "%s%s", show_prefix ? prefix : "", #n);
38*4882a593Smuzhiyun P_FUTEX_OP(WAIT); arg->mask |= SCF_VAL3|SCF_UADDR2; break;
39*4882a593Smuzhiyun P_FUTEX_OP(WAKE); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
40*4882a593Smuzhiyun P_FUTEX_OP(FD); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
41*4882a593Smuzhiyun P_FUTEX_OP(REQUEUE); arg->mask |= SCF_VAL3|SCF_TIMEOUT; break;
42*4882a593Smuzhiyun P_FUTEX_OP(CMP_REQUEUE); arg->mask |= SCF_TIMEOUT; break;
43*4882a593Smuzhiyun P_FUTEX_OP(CMP_REQUEUE_PI); arg->mask |= SCF_TIMEOUT; break;
44*4882a593Smuzhiyun P_FUTEX_OP(WAKE_OP); break;
45*4882a593Smuzhiyun P_FUTEX_OP(LOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
46*4882a593Smuzhiyun P_FUTEX_OP(UNLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
47*4882a593Smuzhiyun P_FUTEX_OP(TRYLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2; break;
48*4882a593Smuzhiyun P_FUTEX_OP(WAIT_BITSET); arg->mask |= SCF_UADDR2; break;
49*4882a593Smuzhiyun P_FUTEX_OP(WAKE_BITSET); arg->mask |= SCF_UADDR2; break;
50*4882a593Smuzhiyun P_FUTEX_OP(WAIT_REQUEUE_PI); break;
51*4882a593Smuzhiyun default: printed = scnprintf(bf, size, "%#x", cmd); break;
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun if (op & FUTEX_PRIVATE_FLAG)
55*4882a593Smuzhiyun printed += scnprintf(bf + printed, size - printed, "|%s%s", show_prefix ? prefix : "", "PRIVATE_FLAG");
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun if (op & FUTEX_CLOCK_REALTIME)
58*4882a593Smuzhiyun printed += scnprintf(bf + printed, size - printed, "|%s%s", show_prefix ? prefix : "", "CLOCK_REALTIME");
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun return printed;
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun #define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op
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