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6 | #include <sys/mman.h> |
6 | #include <sys/mman.h> |
7 | |
7 | |
8 | #undef _GNU_SOURCE |
8 | #undef _GNU_SOURCE |
9 | #define _GNU_SOURCE |
9 | #define _GNU_SOURCE |
10 | #include <sched.h> |
10 | #include <sched.h> |
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11 | #include <unistd.h> |
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12 | #include <sys/syscall.h> |
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13 | |
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14 | #include <sched.h> |
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15 | |
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16 | #include <sys/ioctl.h> |
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17 | #include <net/if.h> |
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18 | |
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19 | #include <linux/nsfs.h> |
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20 | #include <linux/kcmp.h> |
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21 | |
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22 | /* kcmp.h does not define symbols, so there is no way to detect preesence of enum */ |
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23 | /* members, so we just hardcode new symbols here. */ |
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24 | #ifndef KCMP_EPOLL_TFD |
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25 | #define KCMP_EPOLL_TFD 7 |
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26 | #endif |
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27 | |
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28 | #ifdef __has_include |
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29 | #if !__has_include("linux/kcmp.h") // use "" as GCC wrongly expands macros |
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30 | #undef SYS_kcmp |
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31 | #endif |
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32 | #endif |
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33 | |
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34 | #ifdef SYS_kcmp |
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35 | #include "linux/kcmp.h" |
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36 | #define kcmp(pid1,pid2,type,idx1,idx2) \ |
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37 | syscall (SYS_kcmp, (pid_t)pid1, (pid_t)pid2, \ |
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38 | (int)type, (unsigned long)idx1, (unsigned long)idx2) |
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39 | #else |
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40 | #define kcmp(pid1,pid2,type,idx1,idx2) \ |
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41 | (errno = ENOSYS, -1) |
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42 | #endif |
11 | |
43 | |
12 | /* from schmorp.h */ |
44 | /* from schmorp.h */ |
13 | static int |
45 | static int |
14 | s_fileno (SV *fh, int wr) |
46 | s_fileno (SV *fh, int wr) |
15 | { |
47 | { |
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56 | |
88 | |
57 | static const struct { |
89 | static const struct { |
58 | const char *name; |
90 | const char *name; |
59 | IV iv; |
91 | IV iv; |
60 | } *civ, const_iv[] = { |
92 | } *civ, const_iv[] = { |
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93 | # define const_iv(name) { # name, (IV)name }, |
61 | # define const_iv(name) { # name, (IV) CLONE_ ## name }, |
94 | # define const_iv_clone(name) { # name, (IV) CLONE_ ## name }, |
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95 | # ifdef CSIGNAL |
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96 | const_iv (CSIGNAL) |
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97 | # endif |
62 | # ifdef CLONE_FILES |
98 | # ifdef CLONE_FILES |
63 | const_iv (FILES) |
99 | const_iv_clone (FILES) |
64 | # endif |
100 | # endif |
65 | # ifdef CLONE_FS |
101 | # ifdef CLONE_FS |
66 | const_iv (FS) |
102 | const_iv_clone (FS) |
67 | # endif |
103 | # endif |
68 | # ifdef CLONE_NEWNS |
104 | # ifdef CLONE_NEWNS |
69 | const_iv (NEWNS) |
105 | const_iv_clone (NEWNS) |
70 | # endif |
106 | # endif |
71 | # ifdef CLONE_VM |
107 | # ifdef CLONE_VM |
72 | const_iv (VM) |
108 | const_iv_clone (VM) |
73 | # endif |
109 | # endif |
74 | # ifdef CLONE_THREAD |
110 | # ifdef CLONE_THREAD |
75 | const_iv (THREAD) |
111 | const_iv_clone (THREAD) |
76 | # endif |
112 | # endif |
77 | # ifdef CLONE_SIGHAND |
113 | # ifdef CLONE_SIGHAND |
78 | const_iv (SIGHAND) |
114 | const_iv_clone (SIGHAND) |
79 | # endif |
115 | # endif |
80 | # ifdef CLONE_SYSVSEM |
116 | # ifdef CLONE_SYSVSEM |
81 | const_iv (SYSVSEM) |
117 | const_iv_clone (SYSVSEM) |
82 | # endif |
118 | # endif |
83 | # ifdef CLONE_NEWUTS |
119 | # ifdef CLONE_NEWUTS |
84 | const_iv (NEWUTS) |
120 | const_iv_clone (NEWUTS) |
85 | # endif |
121 | # endif |
86 | # ifdef CLONE_NEWIPC |
122 | # ifdef CLONE_NEWIPC |
87 | const_iv (NEWIPC) |
123 | const_iv_clone (NEWIPC) |
88 | # endif |
124 | # endif |
89 | # ifdef CLONE_NEWNET |
125 | # ifdef CLONE_NEWNET |
90 | const_iv (NEWNET) |
126 | const_iv_clone (NEWNET) |
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127 | # endif |
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128 | # ifdef CLONE_NEWTIME |
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129 | const_iv_clone (NEWTIME) |
91 | # endif |
130 | # endif |
92 | # ifdef CLONE_PTRACE |
131 | # ifdef CLONE_PTRACE |
93 | const_iv (PTRACE) |
132 | const_iv_clone (PTRACE) |
94 | # endif |
133 | # endif |
95 | # ifdef CLONE_VFORK |
134 | # ifdef CLONE_VFORK |
96 | const_iv (VFORK) |
135 | const_iv_clone (VFORK) |
97 | # endif |
136 | # endif |
98 | # ifdef CLONE_SETTLS |
137 | # ifdef CLONE_SETTLS |
99 | const_iv (SETTLS) |
138 | const_iv_clone (SETTLS) |
100 | # endif |
139 | # endif |
101 | # ifdef CLONE_PARENT_SETTID |
140 | # ifdef CLONE_PARENT_SETTID |
102 | const_iv (PARENT_SETTID) |
141 | const_iv_clone (PARENT_SETTID) |
103 | # endif |
142 | # endif |
104 | # ifdef CLONE_CHILD_CLEARTID |
143 | # ifdef CLONE_CHILD_CLEARTID |
105 | const_iv (CHILD_CLEARTID) |
144 | const_iv_clone (CHILD_CLEARTID) |
106 | # endif |
145 | # endif |
107 | # ifdef CLONE_DETACHED |
146 | # ifdef CLONE_DETACHED |
108 | const_iv (DETACHED) |
147 | const_iv_clone (DETACHED) |
109 | # endif |
148 | # endif |
110 | # ifdef CLONE_UNTRACED |
149 | # ifdef CLONE_UNTRACED |
111 | const_iv (UNTRACED) |
150 | const_iv_clone (UNTRACED) |
112 | # endif |
151 | # endif |
113 | # ifdef CLONE_CHILD_SETTID |
152 | # ifdef CLONE_CHILD_SETTID |
114 | const_iv (CHILD_SETTID) |
153 | const_iv_clone (CHILD_SETTID) |
115 | # endif |
154 | # endif |
116 | # ifdef CLONE_NEWUSER |
155 | # ifdef CLONE_NEWUSER |
117 | const_iv (NEWUSER) |
156 | const_iv_clone (NEWUSER) |
118 | # endif |
157 | # endif |
119 | # ifdef CLONE_NEWPID |
158 | # ifdef CLONE_NEWPID |
120 | const_iv (NEWPID) |
159 | const_iv_clone (NEWPID) |
121 | # endif |
160 | # endif |
122 | # ifdef CLONE_IO |
161 | # ifdef CLONE_IO |
123 | const_iv (IO) |
162 | const_iv_clone (IO) |
124 | # endif |
163 | # endif |
125 | # ifdef CLONE_NEWCGROUP |
164 | # ifdef CLONE_NEWCGROUP |
126 | const_iv (NEWCGROUP) |
165 | const_iv_clone (NEWCGROUP) |
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166 | # endif |
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167 | # ifdef CLONE_PIDFD |
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168 | const_iv_clone (PIDFD) |
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169 | # endif |
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170 | # ifdef SYS_kcmp |
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171 | const_iv (KCMP_FILE) |
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172 | const_iv (KCMP_VM) |
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173 | const_iv (KCMP_FILES) |
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174 | const_iv (KCMP_FS) |
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175 | const_iv (KCMP_SIGHAND) |
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176 | const_iv (KCMP_IO) |
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177 | const_iv (KCMP_SYSVSEM) |
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178 | const_iv (KCMP_EPOLL_TFD) |
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179 | # endif |
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180 | # ifdef NS_GET_USERNS |
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181 | const_iv (NS_GET_USERNS) |
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182 | # endif |
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183 | # ifdef NS_GET_PARENT |
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184 | const_iv (NS_GET_PARENT) |
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185 | # endif |
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186 | # ifdef NS_GET_NSTYPE |
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187 | const_iv (NS_GET_NSTYPE) |
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188 | # endif |
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189 | # ifdef NS_OWNER_UID |
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190 | const_iv (NS_OWNER_UID |
127 | # endif |
191 | # endif |
128 | }; |
192 | }; |
129 | |
193 | |
130 | for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) |
194 | for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) |
131 | newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); |
195 | newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); |
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159 | munmap (stack_ptr, stacksize); |
223 | munmap (stack_ptr, stacksize); |
160 | errno = old_errno; |
224 | errno = old_errno; |
161 | } |
225 | } |
162 | } |
226 | } |
163 | } |
227 | } |
164 | OUTPUT: |
228 | OUTPUT: RETVAL |
165 | RETVAL |
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166 | |
229 | |
167 | int |
230 | int |
168 | unshare (int flags) |
231 | unshare (int flags) |
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232 | PROTOTYPE: @ |
169 | |
233 | |
170 | int |
234 | int |
171 | setns (SV *fh_or_fd, int nstype = 0) |
235 | setns (SV *fh_or_fd, int nstype = 0) |
172 | C_ARGS: s_fileno (fh_or_fd, 0), nstype |
236 | C_ARGS: s_fileno (fh_or_fd, 0), nstype |
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237 | |
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238 | int |
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239 | pivot_root (SV *new_root, SV *old_root) |
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240 | CODE: |
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241 | RETVAL = syscall (SYS_pivot_root, |
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242 | (const char *)SvPVbyte_nolen (new_root), |
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243 | (const char *)SvPVbyte_nolen (old_root)); |
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244 | OUTPUT: RETVAL |
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245 | |
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246 | int |
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247 | kcmp (IV pid1, IV pid2, IV type, UV idx1 = 0, UV idx2 = 0) |
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248 | |
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249 | int |
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250 | siocsifflags (char *ifname, U32 flags = IFF_UP) |
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251 | CODE: |
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252 | { |
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253 | int saved_errno; |
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254 | struct ifreq ifr; |
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255 | int fd = socket (AF_INET, SOCK_DGRAM, 0); |
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256 | strncpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); |
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257 | RETVAL = ioctl (fd, SIOCSIFFLAGS, &ifr); |
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258 | saved_errno = errno; |
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259 | close (fd); |
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260 | errno = saved_errno; |
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261 | } |
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262 | OUTPUT: RETVAL |
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263 | |