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8 | #undef _GNU_SOURCE |
8 | #undef _GNU_SOURCE |
9 | #define _GNU_SOURCE |
9 | #define _GNU_SOURCE |
10 | #include <sched.h> |
10 | #include <sched.h> |
11 | #include <unistd.h> |
11 | #include <unistd.h> |
12 | #include <sys/syscall.h> |
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 |
13 | |
27 | |
14 | #ifdef __has_include |
28 | #ifdef __has_include |
15 | #if !__has_include("linux/kcmp.h") // use "" as GCC wrongly expands macros |
29 | #if !__has_include("linux/kcmp.h") // use "" as GCC wrongly expands macros |
16 | #undef SYS_kcmp |
30 | #undef SYS_kcmp |
17 | #endif |
31 | #endif |
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76 | const char *name; |
90 | const char *name; |
77 | IV iv; |
91 | IV iv; |
78 | } *civ, const_iv[] = { |
92 | } *civ, const_iv[] = { |
79 | # define const_iv(name) { # name, (IV)name }, |
93 | # define const_iv(name) { # name, (IV)name }, |
80 | # define const_iv_clone(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 |
81 | # ifdef CLONE_FILES |
98 | # ifdef CLONE_FILES |
82 | const_iv_clone (FILES) |
99 | const_iv_clone (FILES) |
83 | # endif |
100 | # endif |
84 | # ifdef CLONE_FS |
101 | # ifdef CLONE_FS |
85 | const_iv_clone (FS) |
102 | const_iv_clone (FS) |
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105 | # ifdef CLONE_NEWIPC |
122 | # ifdef CLONE_NEWIPC |
106 | const_iv_clone (NEWIPC) |
123 | const_iv_clone (NEWIPC) |
107 | # endif |
124 | # endif |
108 | # ifdef CLONE_NEWNET |
125 | # ifdef CLONE_NEWNET |
109 | const_iv_clone (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) |
110 | # endif |
130 | # endif |
111 | # ifdef CLONE_PTRACE |
131 | # ifdef CLONE_PTRACE |
112 | const_iv_clone (PTRACE) |
132 | const_iv_clone (PTRACE) |
113 | # endif |
133 | # endif |
114 | # ifdef CLONE_VFORK |
134 | # ifdef CLONE_VFORK |
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153 | const_iv (KCMP_FILES) |
173 | const_iv (KCMP_FILES) |
154 | const_iv (KCMP_FS) |
174 | const_iv (KCMP_FS) |
155 | const_iv (KCMP_SIGHAND) |
175 | const_iv (KCMP_SIGHAND) |
156 | const_iv (KCMP_IO) |
176 | const_iv (KCMP_IO) |
157 | const_iv (KCMP_SYSVSEM) |
177 | const_iv (KCMP_SYSVSEM) |
158 | const_iv (KCMP_FILE) |
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 |
159 | # endif |
191 | # endif |
160 | }; |
192 | }; |
161 | |
193 | |
162 | 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--) |
163 | 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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191 | munmap (stack_ptr, stacksize); |
223 | munmap (stack_ptr, stacksize); |
192 | errno = old_errno; |
224 | errno = old_errno; |
193 | } |
225 | } |
194 | } |
226 | } |
195 | } |
227 | } |
196 | OUTPUT: |
228 | OUTPUT: RETVAL |
197 | RETVAL |
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198 | |
229 | |
199 | int |
230 | int |
200 | unshare (int flags) |
231 | unshare (int flags) |
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232 | PROTOTYPE: @ |
201 | |
233 | |
202 | int |
234 | int |
203 | setns (SV *fh_or_fd, int nstype = 0) |
235 | setns (SV *fh_or_fd, int nstype = 0) |
204 | C_ARGS: s_fileno (fh_or_fd, 0), nstype |
236 | C_ARGS: s_fileno (fh_or_fd, 0), nstype |
205 | |
237 | |
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207 | pivot_root (SV *new_root, SV *old_root) |
239 | pivot_root (SV *new_root, SV *old_root) |
208 | CODE: |
240 | CODE: |
209 | RETVAL = syscall (SYS_pivot_root, |
241 | RETVAL = syscall (SYS_pivot_root, |
210 | (const char *)SvPVbyte_nolen (new_root), |
242 | (const char *)SvPVbyte_nolen (new_root), |
211 | (const char *)SvPVbyte_nolen (old_root)); |
243 | (const char *)SvPVbyte_nolen (old_root)); |
212 | OUTPUT: |
244 | OUTPUT: RETVAL |
213 | RETVAL |
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214 | |
245 | |
215 | int |
246 | int |
216 | kcmp (IV pid1, IV pid2, IV type, UV idx1 = 0, UV idx2 = 0) |
247 | kcmp (IV pid1, IV pid2, IV type, UV idx1 = 0, UV idx2 = 0) |
217 | |
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 | |