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selftests/mm: kvm, mdwe fixes to avoid requiring "make headers"

On Ubuntu 23.04, the kvm and mdwe selftests/mm build fails due to missing a few items that are found in prctl.h. Here is an excerpt of the build failures: ksm_tests.c:252:13: error: use of undeclared identifier 'PR_SET_MEMORY_MERGE' ... mdwe_test.c:26:18: error: use of undeclared identifier 'PR_SET_MDWE' mdwe_test.c:38:18: error: use of undeclared identifier 'PR_GET_MDWE' Fix these errors by adding a new tools/include/uapi/linux/prctl.h . This file was created by running "make headers", and then copying a snapshot over from ./usr/include/linux/prctl.h, as per the approach we settled on in [1]. [1] commit e076eaca5906 ("selftests: break the dependency upon local header files")

John Hubbard committed 2 years ago

Commit c1428501 parent e2019471 file · +331 −0Browse files

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tools/include/uapi/linux/prctl.h+331−0
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1+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2+#ifndef _LINUX_PRCTL_H
3+#define _LINUX_PRCTL_H
4+
5+#include <linux/types.h>
6+
7+/* Values to pass as first argument to prctl() */
8+
9+#define PR_SET_PDEATHSIG 1 /* Second arg is a signal */
10+#define PR_GET_PDEATHSIG 2 /* Second arg is a ptr to return the signal */
11+
12+/* Get/set current->mm->dumpable */
13+#define PR_GET_DUMPABLE 3
14+#define PR_SET_DUMPABLE 4
15+
16+/* Get/set unaligned access control bits (if meaningful) */
17+#define PR_GET_UNALIGN 5
18+#define PR_SET_UNALIGN 6
19+# define PR_UNALIGN_NOPRINT 1 /* silently fix up unaligned user accesses */
20+# define PR_UNALIGN_SIGBUS 2 /* generate SIGBUS on unaligned user access */
21+
22+/* Get/set whether or not to drop capabilities on setuid() away from
23+ * uid 0 (as per security/commoncap.c) */
24+#define PR_GET_KEEPCAPS 7
25+#define PR_SET_KEEPCAPS 8
26+
27+/* Get/set floating-point emulation control bits (if meaningful) */
28+#define PR_GET_FPEMU 9
29+#define PR_SET_FPEMU 10
30+# define PR_FPEMU_NOPRINT 1 /* silently emulate fp operations accesses */
31+# define PR_FPEMU_SIGFPE 2 /* don't emulate fp operations, send SIGFPE instead */
32+
33+/* Get/set floating-point exception mode (if meaningful) */
34+#define PR_GET_FPEXC 11
35+#define PR_SET_FPEXC 12
36+# define PR_FP_EXC_SW_ENABLE 0x80 /* Use FPEXC for FP exception enables */
37+# define PR_FP_EXC_DIV 0x010000 /* floating point divide by zero */
38+# define PR_FP_EXC_OVF 0x020000 /* floating point overflow */
39+# define PR_FP_EXC_UND 0x040000 /* floating point underflow */
40+# define PR_FP_EXC_RES 0x080000 /* floating point inexact result */
41+# define PR_FP_EXC_INV 0x100000 /* floating point invalid operation */
42+# define PR_FP_EXC_DISABLED 0 /* FP exceptions disabled */
43+# define PR_FP_EXC_NONRECOV 1 /* async non-recoverable exc. mode */
44+# define PR_FP_EXC_ASYNC 2 /* async recoverable exception mode */
45+# define PR_FP_EXC_PRECISE 3 /* precise exception mode */
46+
47+/* Get/set whether we use statistical process timing or accurate timestamp
48+ * based process timing */
49+#define PR_GET_TIMING 13
50+#define PR_SET_TIMING 14
51+# define PR_TIMING_STATISTICAL 0 /* Normal, traditional,
52+ statistical process timing */
53+# define PR_TIMING_TIMESTAMP 1 /* Accurate timestamp based
54+ process timing */
55+
56+#define PR_SET_NAME 15 /* Set process name */
57+#define PR_GET_NAME 16 /* Get process name */
58+
59+/* Get/set process endian */
60+#define PR_GET_ENDIAN 19
61+#define PR_SET_ENDIAN 20
62+# define PR_ENDIAN_BIG 0
63+# define PR_ENDIAN_LITTLE 1 /* True little endian mode */
64+# define PR_ENDIAN_PPC_LITTLE 2 /* "PowerPC" pseudo little endian */
65+
66+/* Get/set process seccomp mode */
67+#define PR_GET_SECCOMP 21
68+#define PR_SET_SECCOMP 22
69+
70+/* Get/set the capability bounding set (as per security/commoncap.c) */
71+#define PR_CAPBSET_READ 23
72+#define PR_CAPBSET_DROP 24
73+
74+/* Get/set the process' ability to use the timestamp counter instruction */
75+#define PR_GET_TSC 25
76+#define PR_SET_TSC 26
77+# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */
78+# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */
79+
80+/* Get/set securebits (as per security/commoncap.c) */
81+#define PR_GET_SECUREBITS 27
82+#define PR_SET_SECUREBITS 28
83+
84+/*
85+ * Get/set the timerslack as used by poll/select/nanosleep
86+ * A value of 0 means "use default"
87+ */
88+#define PR_SET_TIMERSLACK 29
89+#define PR_GET_TIMERSLACK 30
90+
91+#define PR_TASK_PERF_EVENTS_DISABLE 31
92+#define PR_TASK_PERF_EVENTS_ENABLE 32
93+
94+/*
95+ * Set early/late kill mode for hwpoison memory corruption.
96+ * This influences when the process gets killed on a memory corruption.
97+ */
98+#define PR_MCE_KILL 33
99+# define PR_MCE_KILL_CLEAR 0
100+# define PR_MCE_KILL_SET 1
101+
102+# define PR_MCE_KILL_LATE 0
103+# define PR_MCE_KILL_EARLY 1
104+# define PR_MCE_KILL_DEFAULT 2
105+
106+#define PR_MCE_KILL_GET 34
107+
108+/*
109+ * Tune up process memory map specifics.
110+ */
111+#define PR_SET_MM 35
112+# define PR_SET_MM_START_CODE 1
113+# define PR_SET_MM_END_CODE 2
114+# define PR_SET_MM_START_DATA 3
115+# define PR_SET_MM_END_DATA 4
116+# define PR_SET_MM_START_STACK 5
117+# define PR_SET_MM_START_BRK 6
118+# define PR_SET_MM_BRK 7
119+# define PR_SET_MM_ARG_START 8
120+# define PR_SET_MM_ARG_END 9
121+# define PR_SET_MM_ENV_START 10
122+# define PR_SET_MM_ENV_END 11
123+# define PR_SET_MM_AUXV 12
124+# define PR_SET_MM_EXE_FILE 13
125+# define PR_SET_MM_MAP 14
126+# define PR_SET_MM_MAP_SIZE 15
127+
128+/*
129+ * This structure provides new memory descriptor
130+ * map which mostly modifies /proc/pid/stat[m]
131+ * output for a task. This mostly done in a
132+ * sake of checkpoint/restore functionality.
133+ */
134+struct prctl_mm_map {
135+ __u64 start_code; /* code section bounds */
136+ __u64 end_code;
137+ __u64 start_data; /* data section bounds */
138+ __u64 end_data;
139+ __u64 start_brk; /* heap for brk() syscall */
140+ __u64 brk;
141+ __u64 start_stack; /* stack starts at */
142+ __u64 arg_start; /* command line arguments bounds */
143+ __u64 arg_end;
144+ __u64 env_start; /* environment variables bounds */
145+ __u64 env_end;
146+ __u64 *auxv; /* auxiliary vector */
147+ __u32 auxv_size; /* vector size */
148+ __u32 exe_fd; /* /proc/$pid/exe link file */
149+};
150+
151+/*
152+ * Set specific pid that is allowed to ptrace the current task.
153+ * A value of 0 mean "no process".
154+ */
155+#define PR_SET_PTRACER 0x59616d61
156+# define PR_SET_PTRACER_ANY ((unsigned long)-1)
157+
158+#define PR_SET_CHILD_SUBREAPER 36
159+#define PR_GET_CHILD_SUBREAPER 37
160+
161+/*
162+ * If no_new_privs is set, then operations that grant new privileges (i.e.
163+ * execve) will either fail or not grant them. This affects suid/sgid,
164+ * file capabilities, and LSMs.
165+ *
166+ * Operations that merely manipulate or drop existing privileges (setresuid,
167+ * capset, etc.) will still work. Drop those privileges if you want them gone.
168+ *
169+ * Changing LSM security domain is considered a new privilege. So, for example,
170+ * asking selinux for a specific new context (e.g. with runcon) will result
171+ * in execve returning -EPERM.
172+ *
173+ * See Documentation/userspace-api/no_new_privs.rst for more details.
174+ */
175+#define PR_SET_NO_NEW_PRIVS 38
176+#define PR_GET_NO_NEW_PRIVS 39
177+
178+#define PR_GET_TID_ADDRESS 40
179+
180+#define PR_SET_THP_DISABLE 41
181+#define PR_GET_THP_DISABLE 42
182+
183+/*
184+ * No longer implemented, but left here to ensure the numbers stay reserved:
185+ */
186+#define PR_MPX_ENABLE_MANAGEMENT 43
187+#define PR_MPX_DISABLE_MANAGEMENT 44
188+
189+#define PR_SET_FP_MODE 45
190+#define PR_GET_FP_MODE 46
191+# define PR_FP_MODE_FR (1 << 0) /* 64b FP registers */
192+# define PR_FP_MODE_FRE (1 << 1) /* 32b compatibility */
193+
194+/* Control the ambient capability set */
195+#define PR_CAP_AMBIENT 47
196+# define PR_CAP_AMBIENT_IS_SET 1
197+# define PR_CAP_AMBIENT_RAISE 2
198+# define PR_CAP_AMBIENT_LOWER 3
199+# define PR_CAP_AMBIENT_CLEAR_ALL 4
200+
201+/* arm64 Scalable Vector Extension controls */
202+/* Flag values must be kept in sync with ptrace NT_ARM_SVE interface */
203+#define PR_SVE_SET_VL 50 /* set task vector length */
204+# define PR_SVE_SET_VL_ONEXEC (1 << 18) /* defer effect until exec */
205+#define PR_SVE_GET_VL 51 /* get task vector length */
206+/* Bits common to PR_SVE_SET_VL and PR_SVE_GET_VL */
207+# define PR_SVE_VL_LEN_MASK 0xffff
208+# define PR_SVE_VL_INHERIT (1 << 17) /* inherit across exec */
209+
210+/* Per task speculation control */
211+#define PR_GET_SPECULATION_CTRL 52
212+#define PR_SET_SPECULATION_CTRL 53
213+/* Speculation control variants */
214+# define PR_SPEC_STORE_BYPASS 0
215+# define PR_SPEC_INDIRECT_BRANCH 1
216+# define PR_SPEC_L1D_FLUSH 2
217+/* Return and control values for PR_SET/GET_SPECULATION_CTRL */
218+# define PR_SPEC_NOT_AFFECTED 0
219+# define PR_SPEC_PRCTL (1UL << 0)
220+# define PR_SPEC_ENABLE (1UL << 1)
221+# define PR_SPEC_DISABLE (1UL << 2)
222+# define PR_SPEC_FORCE_DISABLE (1UL << 3)
223+# define PR_SPEC_DISABLE_NOEXEC (1UL << 4)
224+
225+/* Reset arm64 pointer authentication keys */
226+#define PR_PAC_RESET_KEYS 54
227+# define PR_PAC_APIAKEY (1UL << 0)
228+# define PR_PAC_APIBKEY (1UL << 1)
229+# define PR_PAC_APDAKEY (1UL << 2)
230+# define PR_PAC_APDBKEY (1UL << 3)
231+# define PR_PAC_APGAKEY (1UL << 4)
232+
233+/* Tagged user address controls for arm64 */
234+#define PR_SET_TAGGED_ADDR_CTRL 55
235+#define PR_GET_TAGGED_ADDR_CTRL 56
236+# define PR_TAGGED_ADDR_ENABLE (1UL << 0)
237+/* MTE tag check fault modes */
238+# define PR_MTE_TCF_NONE 0UL
239+# define PR_MTE_TCF_SYNC (1UL << 1)
240+# define PR_MTE_TCF_ASYNC (1UL << 2)
241+# define PR_MTE_TCF_MASK (PR_MTE_TCF_SYNC | PR_MTE_TCF_ASYNC)
242+/* MTE tag inclusion mask */
243+# define PR_MTE_TAG_SHIFT 3
244+# define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT)
245+/* Unused; kept only for source compatibility */
246+# define PR_MTE_TCF_SHIFT 1
247+
248+/* Control reclaim behavior when allocating memory */
249+#define PR_SET_IO_FLUSHER 57
250+#define PR_GET_IO_FLUSHER 58
251+
252+/* Dispatch syscalls to a userspace handler */
253+#define PR_SET_SYSCALL_USER_DISPATCH 59
254+# define PR_SYS_DISPATCH_OFF 0
255+# define PR_SYS_DISPATCH_ON 1
256+/* The control values for the user space selector when dispatch is enabled */
257+# define SYSCALL_DISPATCH_FILTER_ALLOW 0
258+# define SYSCALL_DISPATCH_FILTER_BLOCK 1
259+
260+/* Set/get enabled arm64 pointer authentication keys */
261+#define PR_PAC_SET_ENABLED_KEYS 60
262+#define PR_PAC_GET_ENABLED_KEYS 61
263+
264+/* Request the scheduler to share a core */
265+#define PR_SCHED_CORE 62
266+# define PR_SCHED_CORE_GET 0
267+# define PR_SCHED_CORE_CREATE 1 /* create unique core_sched cookie */
268+# define PR_SCHED_CORE_SHARE_TO 2 /* push core_sched cookie to pid */
269+# define PR_SCHED_CORE_SHARE_FROM 3 /* pull core_sched cookie to pid */
270+# define PR_SCHED_CORE_MAX 4
271+# define PR_SCHED_CORE_SCOPE_THREAD 0
272+# define PR_SCHED_CORE_SCOPE_THREAD_GROUP 1
273+# define PR_SCHED_CORE_SCOPE_PROCESS_GROUP 2
274+
275+/* arm64 Scalable Matrix Extension controls */
276+/* Flag values must be in sync with SVE versions */
277+#define PR_SME_SET_VL 63 /* set task vector length */
278+# define PR_SME_SET_VL_ONEXEC (1 << 18) /* defer effect until exec */
279+#define PR_SME_GET_VL 64 /* get task vector length */
280+/* Bits common to PR_SME_SET_VL and PR_SME_GET_VL */
281+# define PR_SME_VL_LEN_MASK 0xffff
282+# define PR_SME_VL_INHERIT (1 << 17) /* inherit across exec */
283+
284+/* Memory deny write / execute */
285+#define PR_SET_MDWE 65
286+# define PR_MDWE_REFUSE_EXEC_GAIN (1UL << 0)
287+# define PR_MDWE_NO_INHERIT (1UL << 1)
288+
289+#define PR_GET_MDWE 66
290+
291+#define PR_SET_VMA 0x53564d41
292+# define PR_SET_VMA_ANON_NAME 0
293+
294+#define PR_GET_AUXV 0x41555856
295+
296+#define PR_SET_MEMORY_MERGE 67
297+#define PR_GET_MEMORY_MERGE 68
298+
299+#define PR_RISCV_V_SET_CONTROL 69
300+#define PR_RISCV_V_GET_CONTROL 70
301+# define PR_RISCV_V_VSTATE_CTRL_DEFAULT 0
302+# define PR_RISCV_V_VSTATE_CTRL_OFF 1
303+# define PR_RISCV_V_VSTATE_CTRL_ON 2
304+# define PR_RISCV_V_VSTATE_CTRL_INHERIT (1 << 4)
305+# define PR_RISCV_V_VSTATE_CTRL_CUR_MASK 0x3
306+# define PR_RISCV_V_VSTATE_CTRL_NEXT_MASK 0xc
307+# define PR_RISCV_V_VSTATE_CTRL_MASK 0x1f
308+
309+#define PR_RISCV_SET_ICACHE_FLUSH_CTX 71
310+# define PR_RISCV_CTX_SW_FENCEI_ON 0
311+# define PR_RISCV_CTX_SW_FENCEI_OFF 1
312+# define PR_RISCV_SCOPE_PER_PROCESS 0
313+# define PR_RISCV_SCOPE_PER_THREAD 1
314+
315+/* PowerPC Dynamic Execution Control Register (DEXCR) controls */
316+#define PR_PPC_GET_DEXCR 72
317+#define PR_PPC_SET_DEXCR 73
318+/* DEXCR aspect to act on */
319+# define PR_PPC_DEXCR_SBHE 0 /* Speculative branch hint enable */
320+# define PR_PPC_DEXCR_IBRTPD 1 /* Indirect branch recurrent target prediction disable */
321+# define PR_PPC_DEXCR_SRAPD 2 /* Subroutine return address prediction disable */
322+# define PR_PPC_DEXCR_NPHIE 3 /* Non-privileged hash instruction enable */
323+/* Action to apply / return */
324+# define PR_PPC_DEXCR_CTRL_EDITABLE 0x1 /* Aspect can be modified with PR_PPC_SET_DEXCR */
325+# define PR_PPC_DEXCR_CTRL_SET 0x2 /* Set the aspect for this process */
326+# define PR_PPC_DEXCR_CTRL_CLEAR 0x4 /* Clear the aspect for this process */
327+# define PR_PPC_DEXCR_CTRL_SET_ONEXEC 0x8 /* Set the aspect on exec */
328+# define PR_PPC_DEXCR_CTRL_CLEAR_ONEXEC 0x10 /* Clear the aspect on exec */
329+# define PR_PPC_DEXCR_CTRL_MASK 0x1f
330+
331+#endif /* _LINUX_PRCTL_H */