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helper: Print nicer error messages when user namespaces don't work.

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This commit is contained in:
Alexander Larsson
2016-01-12 09:33:55 +01:00
parent 6701207ca7
commit 5a905d913c
1 changed files with 10 additions and 1 deletions
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11
common/xdg-app-helper.c
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@@ -2248,7 +2248,16 @@ main (int argc,
(ipc ? 0 : CLONE_NEWIPC),
NULL);
if (pid == -1)
die_with_error ("Creating new namespace failed");
{
#ifndef DISABLE_USERNS
if (errno == EINVAL)
die ("Creating new namespace failed, likely because the kernel does not support user namespaces. Recompile xdg-app with --disable-userns, or switch to a kernel with user namespace support.");
else if (errno == EPERM)
die ("No permissions to creating new namespace, likely because the kernel does not allow non-privileged user namespaces. On e.g. debian this can be enabled with 'sysctl kernel.unprivileged_userns_clone=1'.");
else
#endif
die_with_error ("Creating new namespace failed");
}
if (pid != 0)
{