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Merge pull request #632 from adfernandes/master 

nsexec: don't use CLONE_PARENT and CLONE_NEWPID together
This commit is contained in:
Michael Crosby 2016-03-10 13:14:50 -08:00
parent fb79eacb64 080eac3d2a
commit 9ea3372d04
1 changed files with 9 additions and 0 deletions
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9
libcontainer/nsenter/nsexec.c
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@ -14,6 +14,7 @@
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/prctl.h>
#include <unistd.h>
#include <bits/sockaddr.h>
@ -84,6 +85,14 @@ static int clone_parent(jmp_buf *env, int flags)
ca.env = env;
child = clone(child_func, ca.stack_ptr, CLONE_PARENT | SIGCHLD | flags,
&ca);
if (child == -1 && errno == EINVAL) {
if (unshare(flags)) {
pr_perror("Unable to unshare namespaces");
return -1;
}
child = clone(child_func, ca.stack_ptr, SIGCHLD | CLONE_PARENT,
&ca);
}
return child;
}