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Set up a private /dev/pts in the chroot

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This commit is contained in:
Eelco Dolstra 2014-02-27 23:25:03 +01:00
parent 3fd01b171a
commit 1017bd68ea
2 changed files with 14 additions and 2 deletions
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15
src/libstore/build.cc
View File

@ -2017,11 +2017,11 @@ void DerivationGoal::initChild()
bind-mount the host /dev. */
if (dirsInChroot.find("/dev") == dirsInChroot.end()) {
createDirs(chrootRootDir + "/dev/shm");
createDirs(chrootRootDir + "/dev/pts");
Strings ss;
ss.push_back("/dev/full");
ss.push_back("/dev/kvm");
ss.push_back("/dev/null");
ss.push_back("/dev/ptmx");
ss.push_back("/dev/random");
ss.push_back("/dev/tty");
ss.push_back("/dev/urandom");
@ -2065,6 +2065,19 @@ void DerivationGoal::initChild()
if (pathExists("/dev/shm") && mount("none", (chrootRootDir + "/dev/shm").c_str(), "tmpfs", 0, 0) == -1)
throw SysError("mounting /dev/shm");
/* Mount a new devpts on /dev/pts. Note that this
requires the kernel to be compiled with
CONFIG_DEVPTS_MULTIPLE_INSTANCES=y (which is the case
if /dev/ptx/ptmx exists). */
if (pathExists("/dev/pts/ptmx") &&
!pathExists(chrootRootDir + "/dev/ptmx")
&& dirsInChroot.find("/dev/pts") == dirsInChroot.end())
{
if (mount("none", (chrootRootDir + "/dev/pts").c_str(), "devpts", 0, "newinstance,mode=0620") == -1)
throw SysError("mounting /dev/pts");
createSymlink("/dev/pts/ptmx", chrootRootDir + "/dev/ptmx");
}
/* Do the chroot(). Below we do a chdir() to the
temporary build directory to make sure the current
directory is in the chroot. (Actually the order

1
src/libstore/globals.cc
View File

@ -42,7 +42,6 @@ Settings::Settings()
useSubstitutes = true;
useChroot = false;
useSshSubstituter = false;
dirsInChroot.insert("/dev/pts");
impersonateLinux26 = false;
keepLog = true;
compressLog = true;