File: Prctl.xs

package info (click to toggle)
liblinux-prctl-perl 1.6.0-5
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 400 kB
  • sloc: perl: 163; ansic: 19; makefile: 2
file content (337 lines) | stat: -rw-r--r-- 6,071 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "ppport.h"
#include "securebits.h"

#include <errno.h>
#include <sys/capability.h>
#include <sys/prctl.h>
#include <stdio.h>
#include <unistd.h>

#define CAP_EFFECTIVE 0
#define CAP_PERMITTED 1
#define CAP_INHERITABLE 2
#include "const-c.inc"

#ifdef PR_SET_PTRACER
#define NOT_SET (-1)
static int __cached_ptracer;
#endif

MODULE = Linux::Prctl     PACKAGE = Linux::Prctl

INCLUDE: const-xs.inc

int
get_dumpable()
    CODE:
        RETVAL = prctl(PR_GET_DUMPABLE, 0, 0, 0, 0);
    OUTPUT:
        RETVAL

int
set_dumpable(dumpable)
    int dumpable
    CODE:
        RETVAL = prctl(PR_SET_DUMPABLE, dumpable, 0, 0, 0);
    OUTPUT:
        RETVAL

int
get_endian()
    CODE:
        int endianness;
        if(prctl(PR_GET_ENDIAN, &endianness, 0, 0, 0))
            XSRETURN_UNDEF;
        RETVAL = endianness;
    OUTPUT:
        RETVAL

int
set_endian(endianness)
    INIT:
        int endianness = 0;
    CODE:
        RETVAL = prctl(PR_SET_ENDIAN, endianness, 0, 0, 0);
    OUTPUT:
        RETVAL

int get_fpemu()
    INIT:
        int fpemu = 0;
    CODE:
        if(prctl(PR_GET_FPEMU, &fpemu, 0, 0, 0))
            XSRETURN_UNDEF;
        RETVAL = fpemu;
    OUTPUT:
        RETVAL

int
set_fpemu(fpemu)
    int fpemu
    CODE:
        RETVAL = prctl(PR_SET_FPEMU, fpemu, 0, 0, 0);
    OUTPUT:
        RETVAL

int get_fpexc()
    INIT:
        int fpexc = 0;
    CODE:
        if(prctl(PR_GET_FPEXC, &fpexc, 0, 0, 0))
            XSRETURN_UNDEF;
        RETVAL = fpexc;
    OUTPUT:
        RETVAL

int
set_fpexc(fpexc)
    int fpexc
    CODE:
        RETVAL = prctl(PR_SET_FPEXC, fpexc, 0, 0, 0);
    OUTPUT:
        RETVAL

=for comment

New in 2.6.32, but named and implemented inconsistently. The linux
implementation has two ways of setting the policy to the default, and thus
needs an extra argument. We ignore the first argument and always all
PR_MCE_KILL_SET. This makes our implementation simpler and keeps the prctl
interface more consistent

=cut

#ifdef PR_MCE_KILL
#define PR_GET_MCE_KILL PR_MCE_KILL_GET
#define PR_SET_MCE_KILL PR_MCE_KILL
int
set_mce_kill(mce_kill)
    int mce_kill
    CODE:
        RETVAL = prctl(PR_SET_MCE_KILL, PR_MCE_KILL_SET, mce_kill, 0, 0);
    OUTPUT:
        RETVAL

int
get_mce_kill()
    CODE:
        RETVAL = prctl(PR_GET_MCE_KILL, 0, 0, 0, 0);
    OUTPUT:
        RETVAL

#endif

char *
get_name()
    INIT:
        char *name = (char*)malloc(32);
    CODE:
        prctl(PR_GET_NAME, name, 0, 0, 0);
        RETVAL = name;
    OUTPUT:
        RETVAL

int
set_name(name)
    char *name
    CODE:
        RETVAL = prctl(PR_SET_NAME, name, 0, 0, 0);
    OUTPUT:
        RETVAL

int
get_pdeathsig()
    INIT:
        int signal;
    CODE:
        prctl(PR_GET_PDEATHSIG, &signal, 0, 0, 0);
        RETVAL = signal;
    OUTPUT:
        RETVAL

int
set_pdeathsig(signal)
    int signal
    CODE:
        RETVAL = prctl(PR_SET_PDEATHSIG, signal, 0, 0, 0);
    OUTPUT:
        RETVAL

#ifdef PR_SET_PTRACER
int
set_ptracer(pid)
    int pid
    CODE:
        RETVAL = prctl(PR_SET_PTRACER, pid, 0, 0, 0);
        __cached_ptracer = pid;
    OUTPUT:
        RETVAL

int get_ptracer()
    CODE:
        if(__cached_ptracer == NOT_SET){
            __cached_ptracer = (int)getppid();
        }
        RETVAL = __cached_ptracer;
    OUTPUT:
        RETVAL

#endif

#ifdef PR_SET_SECCOMP
int
set_seccomp(val)
    int val
    CODE:
        RETVAL = prctl(PR_SET_SECCOMP, val, 0, 0, 0);
    OUTPUT:
        RETVAL

int
get_seccomp()
    CODE:
        RETVAL = prctl(PR_GET_SECCOMP, 0, 0, 0, 0);
    OUTPUT:
        RETVAL

#endif

#ifdef PR_SET_SECUREBITS
int
set_securebits(bits)
    int bits
    CODE:
        RETVAL = prctl(PR_SET_SECUREBITS, bits, 0, 0, 0);
    OUTPUT:
        RETVAL

int
get_securebits()
    CODE:
        RETVAL = prctl(PR_GET_SECUREBITS, 0, 0, 0, 0);
    OUTPUT:
        RETVAL

#endif

#ifdef PR_GET_TIMERSLACK
int
set_timerslack(timerslack)
    int timerslack
    CODE:
        RETVAL = prctl(PR_SET_TIMERSLACK, timerslack, 0, 0, 0);
    OUTPUT:
        RETVAL

int
get_timerslack()
    CODE:
        RETVAL = prctl(PR_GET_TIMERSLACK, 0, 0, 0, 0);
    OUTPUT:
        RETVAL

#endif

int
set_timing(timing)
    int timing
    CODE:
        RETVAL = prctl(PR_SET_TIMING, timing, 0, 0, 0);
    OUTPUT:
        RETVAL

int
get_timing()
    CODE:
        RETVAL = prctl(PR_GET_TIMING, 0, 0, 0, 0);
    OUTPUT:
        RETVAL

#ifdef PR_SET_TSC
int
set_tsc(tsc)
    int tsc
    CODE:
        RETVAL = prctl(PR_SET_TSC, tsc, 0, 0, 0);
    OUTPUT:
        RETVAL

int
get_tsc()
    CODE:
        int tsc;
        prctl(PR_GET_TSC, &tsc, 0, 0, 0);
        RETVAL = tsc;
    OUTPUT:
        RETVAL

#endif

int
set_unalign(unalign)
    int unalign
    CODE:
        RETVAL = prctl(PR_SET_UNALIGN, unalign, 0, 0, 0);
    OUTPUT:
        RETVAL

int
get_unalign()
    CODE:
        int unalign;
        prctl(PR_GET_UNALIGN, &unalign, 0, 0, 0);
        RETVAL = unalign;
    OUTPUT:
        RETVAL

#ifdef PR_CAPBSET_DROP
int
capbset_drop(cap)
    int cap
    CODE:
        RETVAL = prctl(PR_CAPBSET_DROP, cap, 0, 0, 0);
    OUTPUT:
        RETVAL

int
capbset_read(cap)
    int cap
    CODE:
        RETVAL = prctl(PR_CAPBSET_READ, cap, 0, 0, 0);
    OUTPUT:
        RETVAL

#endif

int
get_cap(flag, cap)
    int flag
    int cap
    CODE:
        cap_flag_value_t isset;
        cap_t caps = cap_get_proc();
        if(cap_get_flag(caps, (cap_value_t)cap, (cap_flag_t)flag, &isset) == -1)
            croak("cap_get_flag failed: %s", strerror(errno));
        cap_free(caps);
        RETVAL = isset;
    OUTPUT:
        RETVAL

int
set_cap(flag, cap, val)
    int flag
    int cap
    int val
    CODE:
        cap_flag_value_t isset;
        cap_t caps = cap_get_proc();
        if(cap_set_flag(caps, (cap_flag_t)flag, 1, (const cap_value_t *)&cap, (cap_flag_value_t)val) == -1)
            croak("cap_set_flag failed: %s", strerror(errno));
        cap_set_proc(caps);
        cap_free(caps);
        RETVAL = isset;
    OUTPUT:
        RETVAL