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