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qemu_shim: Require absolute path for root directory

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The virConnectOpen(), well virConnectOpenInternal() reports an
error if embed root is not an absolute path. This is a fair
requirement, but our qemu_shim doesn't check this requirement and
passes the path to mkdir(), only to fail later on, leaving the
empty directory behind:

  $ ls -d asd
  ls: cannot access 'asd': No such file or directory

  $ virt-qemu-run -r asd whatever.xml
  virt-qemu-run: cannot open qemu:///embed?root=asd: unsupported configuration: root path must be absolute

  $ ls -d asd
  asd

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
This commit is contained in:
Michal Privoznik 2023-03-22 12:39:21 +01:00
parent 94862a77be
commit b407897ea9
1 changed files with 12 additions and 4 deletions
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16
src/qemu/qemu_shim.c
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@ -214,10 +214,18 @@ int main(int argc, char **argv)
}
tmproot = true;
} else if (g_mkdir_with_parents(root, 0755) < 0) {
g_printerr("%s: cannot create dir: %s\n",
argv[0], g_strerror(errno));
goto cleanup;
} else {
if (!g_path_is_absolute(root)) {
g_printerr("%s: the root directory must be an absolute path\n",
argv[0]);
goto cleanup;
}
if (g_mkdir_with_parents(root, 0755) < 0) {
g_printerr("%s: cannot create dir: %s\n",
argv[0], g_strerror(errno));
goto cleanup;
}
}
if (chmod(root, 0755) < 0) {