diff options
| author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2016-09-10 12:07:51 +0100 |
|---|---|---|
| committer | Martin Pitt <martin.pitt@ubuntu.com> | 2016-09-10 13:07:51 +0200 |
| commit | ae9efab711e7478b4f035edd00824d518bcf0d3c (patch) | |
| tree | 974dbcfa996a363200aac5192122d0da7b4f889c /src/shared/install.c | |
| parent | 4245eb507295522699215e35418c4c2716d6687c (diff) | |
shared/install: fix set-default with empty root (#4118)
https://bugzilla.redhat.com/show_bug.cgi?id=1374371
When root was empty or equal to "/", chroot_symlinks_same was called with
root==NULL, and strjoina returned "", so the code thought both paths are equal
even if they were not. Fix that by always providing a non-null first argument
to strjoina.
Diffstat (limited to 'src/shared/install.c')
| -rw-r--r-- | src/shared/install.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/shared/install.c b/src/shared/install.c index 11770d887f..5f12fb447f 100644 --- a/src/shared/install.c +++ b/src/shared/install.c @@ -403,6 +403,9 @@ static bool chroot_symlinks_same(const char *root, const char *wd, const char *a /* This will give incorrect results if the paths are relative and go outside * of the chroot. False negatives are possible. */ + if (!root) + root = "/"; + a = strjoina(path_is_absolute(a) ? root : wd, "/", a); b = strjoina(path_is_absolute(b) ? root : wd, "/", b); return path_equal_or_files_same(a, b); |