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/linux-6.15/Documentation/userspace-api/
H A Dspec_ctrl.rst16 :manpage:`prctl(2)`.
18 There are two prctl options which are related to this:
28 which is selected with arg2 of prctl(2). The return value uses bits 0-3 with
41 subsequent prctl(..., PR_SPEC_ENABLE) will fail.
49 available. If not set, prctl(PR_SET_SPECULATION_CTRL) for the speculation
58 is selected by arg2 of :manpage:`prctl(2)` per task. arg3 is used to hand
67 EINVAL The prctl is not implemented by the architecture or unused
68 prctl(2) arguments are not 0.
95 * prctl(PR_GET_SPECULATION_CTRL, PR_SPEC_STORE_BYPASS, 0, 0, 0);
105 * prctl(PR_GET_SPECULATION_CTRL, PR_SPEC_INDIRECT_BRANCH, 0, 0, 0);
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/linux-6.15/tools/testing/selftests/syscall_user_dispatch/
H A Dsud_test.c68 ret = prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0, 0, &sel); in TEST_SIGNAL()
89 prctl(PR_SET_SYSCALL_USER_DISPATCH, op, 0, 0, &sel); in TEST()
96 prctl(PR_SET_SYSCALL_USER_DISPATCH, op, 0x1, 0x0, 0); in TEST()
100 prctl(PR_SET_SYSCALL_USER_DISPATCH, op, 0x0, 0xff, 0); in TEST()
104 prctl(PR_SET_SYSCALL_USER_DISPATCH, op, 0x0, 0x0, &sel); in TEST()
109 prctl(PR_SET_SYSCALL_USER_DISPATCH, op, 0x0, 0x0, 0x0); in TEST()
116 prctl(PR_SET_SYSCALL_USER_DISPATCH, op, 0x1, 0x0, &sel); in TEST()
118 prctl(PR_SET_SYSCALL_USER_DISPATCH, op, -1L, 0x0, &sel); in TEST()
122 prctl(PR_SET_SYSCALL_USER_DISPATCH, op, 0x0, 0x1, (void *) -1); in TEST()
128 prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 1, -1L, &sel); in TEST()
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/linux-6.15/tools/testing/selftests/arm64/gcs/
H A Dgcs-locking.c46 ret = prctl(PR_LOCK_SHADOW_STACK_STATUS, ULONG_MAX, 0, 0, 0); in TEST()
110 ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); in TEST_F()
114 ret = prctl(PR_LOCK_SHADOW_STACK_STATUS, variant->mode, 0, 0, 0); in TEST_F()
129 ret = prctl(PR_LOCK_SHADOW_STACK_STATUS, variant->mode, 0, 0, 0); in TEST_F()
136 ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); in TEST_F()
153 ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); in TEST_F()
157 ret = prctl(PR_LOCK_SHADOW_STACK_STATUS, variant->mode, 0, 0, 0); in TEST_F()
164 ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); in TEST_F()
173 ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); in TEST_F()
188 ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); in main()
/linux-6.15/tools/testing/selftests/mm/
H A Dmdwe_test.c28 EXPECT_LT(prctl(PR_SET_MDWE, 7L, 0L, 0L, 0L), 0); in TEST()
30 EXPECT_LT(prctl(PR_SET_MDWE, 0L, 7L, 0L, 0L), 0); in TEST()
32 EXPECT_LT(prctl(PR_SET_MDWE, 0L, 0L, 7L, 0L), 0); in TEST()
34 EXPECT_LT(prctl(PR_SET_MDWE, 0L, 0L, 0L, 7L), 0); in TEST()
37 EXPECT_LT(prctl(PR_GET_MDWE, 7L, 0L, 0L, 0L), 0); in TEST()
39 EXPECT_LT(prctl(PR_GET_MDWE, 0L, 7L, 0L, 0L), 0); in TEST()
41 EXPECT_LT(prctl(PR_GET_MDWE, 0L, 0L, 7L, 0L), 0); in TEST()
43 EXPECT_LT(prctl(PR_GET_MDWE, 0L, 0L, 0L, 7L), 0); in TEST()
117 ret = prctl(PR_GET_MDWE, 0L, 0L, 0L, 0L); in TEST_F()
189 ret = prctl(PR_SET_MDWE, mdwe_flags, 0L, 0L, 0L); in FIXTURE_SETUP()
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H A Dksm_functional_tests.c200 ret = prctl(PR_SET_MEMORY_MERGE, 1, 0, 0, 0); in __mmap_and_merge_range()
442 ret = prctl(PR_SET_MEMORY_MERGE, 1, 0, 0, 0); in test_prctl()
451 ret = prctl(PR_GET_MEMORY_MERGE, 0, 0, 0, 0); in test_prctl()
460 ret = prctl(PR_SET_MEMORY_MERGE, 0, 0, 0, 0); in test_prctl()
466 ret = prctl(PR_GET_MEMORY_MERGE, 0, 0, 0, 0); in test_prctl()
484 if (prctl(PR_GET_MEMORY_MERGE, 0, 0, 0, 0) != 1) in test_child_ksm()
516 ret = prctl(PR_SET_MEMORY_MERGE, 1, 0, 0, 0); in test_prctl_fork()
544 if (prctl(PR_SET_MEMORY_MERGE, 0, 0, 0, 0)) { in test_prctl_fork()
559 ret = prctl(PR_SET_MEMORY_MERGE, 1, 0, 0, 0); in test_prctl_fork_exec()
596 if (prctl(PR_SET_MEMORY_MERGE, 0, 0, 0, 0)) { in test_prctl_fork_exec()
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/linux-6.15/tools/testing/selftests/seccomp/
H A Dseccomp_bpf.c380 ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); in TEST()
450 ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); in TEST()
487 ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); in TEST()
521 ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); in TEST()
544 ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); in TEST()
547 ret = prctl(PR_GET_SECCOMP, 0, 0, 0, 0); in TEST()
553 ret = prctl(PR_GET_SECCOMP, 0, 0, 0, 0); in TEST()
569 ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); in TEST()
586 ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); in TEST()
606 ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); in TEST()
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H A Dseccomp_benchmark.c220 ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); in main()
224 ret = prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, &bitmap_prog); in main()
231 ret = prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, &bitmap_prog); in main()
238 ret = prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, &prog); in main()
245 ret = prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, &bitmap_prog); in main()
/linux-6.15/tools/testing/selftests/powerpc/dexcr/
H A Ddexcr.h35 unsigned long prctl; /* 'which' value for get/set prctl */ member
44 .prctl = PR_PPC_DEXCR_SBHE,
51 .prctl = PR_PPC_DEXCR_IBRTPD,
58 .prctl = PR_PPC_DEXCR_SRAPD,
65 .prctl = PR_PPC_DEXCR_NPHIE,
72 .prctl = -1,
H A Dchdexcr.c38 if (aspect->prctl == -1) in help()
48 if (aspects[i].prctl != -1 && !strcmp(aspects[i].opt, opt)) in opt_to_aspect()
84 err = pr_set_dexcr(aspect->prctl, ctrl); in apply_option()
/linux-6.15/tools/testing/selftests/riscv/vector/
H A Dvstate_prctl.c18 rc = prctl(PR_RISCV_V_SET_CONTROL, provided); in test_and_compare_child()
42 rc = prctl(PR_RISCV_V_GET_CONTROL); in TEST()
56 rc = prctl(PR_RISCV_V_SET_CONTROL, PR_RISCV_V_VSTATE_CTRL_ON); in TEST()
72 rc = prctl(PR_RISCV_V_SET_CONTROL, flag); in TEST()
85 rc = prctl(PR_RISCV_V_SET_CONTROL, flag); in TEST()
215 rc = prctl(PR_RISCV_V_SET_CONTROL, 0xff0); in TEST()
228 rc = prctl(PR_RISCV_V_SET_CONTROL, 0x3); in TEST()
241 rc = prctl(PR_RISCV_V_SET_CONTROL, 0xc); in TEST()
/linux-6.15/Documentation/arch/riscv/
H A Dcmodx.rst22 or use the ``PR_RISCV_SET_ICACHE_FLUSH_CTX`` prctl() and emit fence.i in
23 userspace. The syscall performs a one-off icache flushing operation. The prctl
29 when the memory map being used by a hart changes. If the prctl() context caused
32 syscall inside of the prctl() context.
34 prctl() Interface
37 Call prctl() with ``PR_RISCV_SET_ICACHE_FLUSH_CTX`` as the first argument. The
54 #include <sys/prctl.h>
64 // Call prctl before first fence.i is called inside modify_instruction
65 prctl(PR_RISCV_SET_ICACHE_FLUSH_CTX, PR_RISCV_CTX_SW_FENCEI_ON, PR_RISCV_SCOPE_PER_PROCESS);
67 // Call prctl after final fence.i is called in process
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/linux-6.15/tools/testing/selftests/prctl/
H A Ddisable-tsc-test.c49 if ( prctl(PR_GET_TSC, &tsc_val) == -1) in sigsegv_cb()
55 if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1) in sigsegv_cb()
71 if ( prctl(PR_GET_TSC, &tsc_val) == -1) in main()
79 if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1) in main()
86 if ( prctl(PR_SET_TSC, PR_TSC_SIGSEGV) == -1) in main()
H A Dset-process-name.c21 res = prctl(PR_SET_NAME, name, NULL, NULL, NULL); in set_name()
33 res = prctl(PR_GET_NAME, name, NULL, NULL, NULL); in check_is_name_correct()
46 res = prctl(PR_GET_NAME, name, NULL, NULL, NULL); in check_null_pointer()
72 int res = prctl(PR_GET_NAME, name, NULL, NULL, NULL); in check_name()
H A Ddisable-tsc-on-off-stress-test.c50 if (prctl(PR_SET_TSC, PR_TSC_ENABLE) < 0) in sigsegv_cb()
72 if (prctl(PR_SET_TSC, PR_TSC_SIGSEGV) < 0) in task()
H A Ddisable-tsc-ctxt-sw-stress-test.c46 if (prctl(PR_SET_TSC, PR_TSC_SIGSEGV) < 0) in segvtask()
67 if (prctl(PR_SET_TSC, PR_TSC_ENABLE) < 0) in rdtsctask()
/linux-6.15/tools/testing/selftests/exec/
H A Dcheck-exec.c65 err = prctl(PR_SET_SECUREBITS, secbits); in test_secbits_set()
350 EXPECT_EQ(0, prctl(PR_GET_SECUREBITS)); in FIXTURE_SETUP()
377 unsigned int secbits = prctl(PR_GET_SECUREBITS); in TEST_F()
381 EXPECT_EQ(secbits, prctl(PR_GET_SECUREBITS)); in TEST_F()
382 CHILD(EXPECT_EQ(secbits, prctl(PR_GET_SECUREBITS))); in TEST_F()
386 EXPECT_EQ(secbits, prctl(PR_GET_SECUREBITS)); in TEST_F()
391 EXPECT_EQ(secbits, prctl(PR_GET_SECUREBITS)); in TEST_F()
397 unsigned int secbits = prctl(PR_GET_SECUREBITS); in TEST_F()
415 unsigned int secbits = prctl(PR_GET_SECUREBITS); in TEST_F()
431 unsigned int secbits = prctl(PR_GET_SECUREBITS); in TEST_F()
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/linux-6.15/tools/testing/selftests/capabilities/
H A Dtest_execve.c93 if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) != 0) in create_and_enter_ns()
279 …if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_BIND_SERVICE, 0, 0, 0) != -1 || errno != E… in do_tests()
296 if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_RAW, 0, 0, 0) != -1 || errno != EPERM) { in do_tests()
307 if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) { in do_tests()
314 if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != 1) { in do_tests()
319 if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0, 0) != 0) in do_tests()
323 if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) { in do_tests()
329 if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) in do_tests()
337 if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) { in do_tests()
357 if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, CAP_NET_BIND_SERVICE, 0, 0, 0) != 0) in do_tests()
/linux-6.15/tools/testing/selftests/arm64/fp/
H A Dvec-syscfg.c316 ret = prctl(data->prctl_get); in prctl_get()
341 ret = prctl(data->prctl_set, cur_vl); in prctl_set_same()
365 ret = prctl(data->prctl_set, data->min_vl); in prctl_set()
386 ret = prctl(data->prctl_set, data->max_vl); in prctl_set()
401 ret = prctl(data->prctl_get); in prctl_set()
428 ret = prctl(data->prctl_set, data->min_vl); in prctl_set_no_child()
475 ret = prctl(data->prctl_get); in prctl_set_for_child()
522 ret = prctl(data->prctl_set, data->max_vl); in prctl_set_onexec()
582 ret = prctl(data->prctl_set, vl); in prctl_set_all_vqs()
711 ret = prctl(sve_data->prctl_set, sve_data->min_vl); in change_sve_with_za()
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/linux-6.15/Documentation/arch/powerpc/
H A Ddexcr.rst39 prctl section in Configuration
44 :manpage:`prctl(2)` commands. These calls have the form::
46 prctl(PR_PPC_GET_DEXCR, unsigned long which, 0, 0, 0);
47 prctl(PR_PPC_SET_DEXCR, unsigned long which, unsigned long ctrl, 0, 0);
56 * - ``prctl()`` which
80 * - ``prctl()`` ctrl
107 ``PR_PPC_SET_DEXCR`` prctl.
112 prctl(PR_PPC_SET_DEXCR, PR_PPC_DEXCR_IBRTPD, PR_PPC_DEXCR_CTRL_SET, 0, 0);
124 :manpage:`execve(2)`. The PR_PPC_SET_DEXCR prctl() can control both of these
165 - This aspect cannot be modified with prctl() (check for the
/linux-6.15/tools/perf/trace/beauty/
H A Dprctl_option.sh8 grep -E $regex ${beauty_uapi_linux_dir}/prctl.h | grep -v PR_SET_PTRACER | \
15 grep -E $regex ${beauty_uapi_linux_dir}/prctl.h | \
/linux-6.15/Documentation/translations/zh_CN/userspace-api/
H A Dseccomp_filter.rst45 添加了一个额外的seccomp模式，它可以使用和严格seccomp相同的 prctl(2) 调用来启用。
55 prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, prog);
63 在调用之前，进程必须调用 ``prctl(PR_SET_NO_NEW_PRIVS, 1)`` 或者在它的
68 另外，如果 ``prctl(2)`` 被安装的过滤器所允许，就可以叠加额外的过滤器。这会增
/linux-6.15/samples/check-exec/
H A Dset-exec.c36 secbits_cur = prctl(PR_GET_SECUREBITS); in main()
71 prctl(PR_SET_SECUREBITS, secbits_new)) { in main()
/linux-6.15/Documentation/admin-guide/LSM/
H A DYama.rst30 For a solution, some applications use ``prctl(PR_SET_DUMPABLE, ...)`` to
39 ``prctl(PR_SET_PTRACER, pid, ...)`` can be used. An inferior can declare which
45 restrictions, it can call ``prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY, ...)``
55 ``prctl(PR_SET_DUMPABLE...)`` already). Similarly, ``PTRACE_TRACEME`` is
63 inferior can call ``prctl(PR_SET_PTRACER, debugger, ...)`` to declare
/linux-6.15/samples/seccomp/
H A Ddropper.c49 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0)) { in install_filter()
53 if (prctl(PR_SET_SECCOMP, 2, &prog)) { in install_filter()
/linux-6.15/tools/testing/selftests/riscv/abi/
H A Dpointer_masking.c47 ret = prctl(PR_SET_TAGGED_ADDR_CTRL, request << PR_PMLEN_SHIFT, 0, 0, 0); in test_pmlen()
51 ret = prctl(PR_GET_TAGGED_ADDR_CTRL, 0, 0, 0, 0); in test_pmlen()
83 ret = prctl(PR_SET_TAGGED_ADDR_CTRL, arg, 0, 0, 0); in set_tagged_addr_ctrl()
85 ret = prctl(PR_GET_TAGGED_ADDR_CTRL, 0, 0, 0, 0); in set_tagged_addr_ctrl()

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