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chrootHelper: Handle symlinks in the root directory

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This is necessary on Ubuntu where /bin and /lib* are symlinks.
This commit is contained in:
Eelco Dolstra 2020-12-22 12:28:50 +01:00
parent 724b7f4fb6
commit 5373f4be3b
1 changed files with 8 additions and 6 deletions
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14
src/nix/run.cc
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@ -258,14 +258,16 @@ void chrootHelper(int argc, char * * argv)
for (auto entry : readDirectory("/")) {
auto src = "/" + entry.name;
auto st = lstat(src);
if (!S_ISDIR(st.st_mode)) continue;
Path dst = tmpDir + "/" + entry.name;
if (pathExists(dst)) continue;
if (mkdir(dst.c_str(), 0700) == -1)
throw SysError("creating directory '%s'", dst);
if (mount(src.c_str(), dst.c_str(), "", MS_BIND | MS_REC, 0) == -1)
throw SysError("mounting '%s' on '%s'", src, dst);
auto st = lstat(src);
if (S_ISDIR(st.st_mode)) {
if (mkdir(dst.c_str(), 0700) == -1)
throw SysError("creating directory '%s'", dst);
if (mount(src.c_str(), dst.c_str(), "", MS_BIND | MS_REC, 0) == -1)
throw SysError("mounting '%s' on '%s'", src, dst);
} else if (S_ISLNK(st.st_mode))
createSymlink(readLink(src), dst);
}
char * cwd = getcwd(0, 0);