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Comparing Linux-Clone/Clone.xs (file contents):
Revision 1.4 by root, Tue Nov 7 18:15:29 2017 UTC vs.
Revision 1.8 by root, Sun Sep 4 00:17:26 2022 UTC

… …
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>
13
14#include <sched.h>
15
16#include <sys/ioctl.h>
17#include <net/if.h>
18
19#include <linux/nsfs.h>
20#include <linux/kcmp.h>
21
22/* kcmp.h does not define symbols, so there is no way to detect preesence of enum */
23/* members, so we just hardcode new symbols here. */
24#ifndef KCMP_EPOLL_TFD
25 #define KCMP_EPOLL_TFD 7
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
… …
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 },
95# ifdef CSIGNAL
96 const_iv (CSIGNAL)
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)
… …
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)
110# endif 127# endif
128# ifdef CLONE_NEWTIME
129 x
130 const_iv_clone (NEWTIME)
131# endif
111# ifdef CLONE_PTRACE 132# ifdef CLONE_PTRACE
112 const_iv_clone (PTRACE) 133 const_iv_clone (PTRACE)
113# endif 134# endif
114# ifdef CLONE_VFORK 135# ifdef CLONE_VFORK
115 const_iv_clone (VFORK) 136 const_iv_clone (VFORK)
… …
141# ifdef CLONE_IO 162# ifdef CLONE_IO
142 const_iv_clone (IO) 163 const_iv_clone (IO)
143# endif 164# endif
144# ifdef CLONE_NEWCGROUP 165# ifdef CLONE_NEWCGROUP
145 const_iv_clone (NEWCGROUP) 166 const_iv_clone (NEWCGROUP)
167# endif
168# ifdef CLONE_PIDFD
169 const_iv_clone (PIDFD)
146# endif 170# endif
147# ifdef SYS_kcmp 171# ifdef SYS_kcmp
148 const_iv (KCMP_FILE) 172 const_iv (KCMP_FILE)
149 const_iv (KCMP_VM) 173 const_iv (KCMP_VM)
150 const_iv (KCMP_FILES) 174 const_iv (KCMP_FILES)
151 const_iv (KCMP_FS) 175 const_iv (KCMP_FS)
152 const_iv (KCMP_SIGHAND) 176 const_iv (KCMP_SIGHAND)
153 const_iv (KCMP_IO) 177 const_iv (KCMP_IO)
154 const_iv (KCMP_SYSVSEM) 178 const_iv (KCMP_SYSVSEM)
155 const_iv (KCMP_FILE) 179 const_iv (KCMP_EPOLL_TFD)
180# endif
181# ifdef NS_GET_USERNS
182 const_iv (NS_GET_USERNS)
183# endif
184# ifdef NS_GET_PARENT
185 const_iv (NS_GET_PARENT)
186# endif
187# ifdef NS_GET_NSTYPE
188 const_iv (NS_GET_NSTYPE)
189# endif
190# ifdef NS_OWNER_UID
191 const_iv (NS_OWNER_UID
156# endif 192# endif
157 }; 193 };
158 194
159 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) 195 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
160 newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); 196 newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
… …
188 munmap (stack_ptr, stacksize); 224 munmap (stack_ptr, stacksize);
189 errno = old_errno; 225 errno = old_errno;
190 } 226 }
191 } 227 }
192} 228}
193 OUTPUT: 229 OUTPUT: RETVAL
194 RETVAL
195 230
196int 231int
197unshare (int flags) 232unshare (int flags)
198 233
199int 234int
… …
204pivot_root (SV *new_root, SV *old_root) 239pivot_root (SV *new_root, SV *old_root)
205 CODE: 240 CODE:
206 RETVAL = syscall (SYS_pivot_root, 241 RETVAL = syscall (SYS_pivot_root,
207 (const char *)SvPVbyte_nolen (new_root), 242 (const char *)SvPVbyte_nolen (new_root),
208 (const char *)SvPVbyte_nolen (old_root)); 243 (const char *)SvPVbyte_nolen (old_root));
209 OUTPUT: 244 OUTPUT: RETVAL
210 RETVAL
211 245
212int 246int
213kcmp (IV pid1, IV pid2, IV type, UV idx1 = 0, UV idx2 = 0) 247kcmp (IV pid1, IV pid2, IV type, UV idx1 = 0, UV idx2 = 0)
214 248
249int
250siocsifflags (char *ifname, U32 flags = IFF_UP)
251 CODE:
252{
253 int saved_errno;
254 struct ifreq ifr;
255 int fd = socket (AF_INET, SOCK_DGRAM, 0);
256 strncpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
257 RETVAL = ioctl (fd, SIOCSIFFLAGS, &ifr);
258 saved_errno = errno;
259 close (fd);
260 errno = saved_errno;
261}
262 OUTPUT: RETVAL
263

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