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core: freeze execution if /etc/mtab exists

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The mount monitor that was added to libmount v2.27 requires /etc/mtab to be
non-existant. As systemd now uses that functionality, we cannot monitor any
mounts anymore, and hence not support .mount units.

Systems that have /etc/mtab around as regular file are unsupported by
systemd since a long time.

This patch makes that condition fatal, so we do not boot up with
non-working mount monitor support.
This commit is contained in:
Daniel Mack 2015-09-09 14:00:23 +02:00
parent 9c00a6adfa
commit bcce71873b
1 changed files with 4 additions and 3 deletions
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7
src/core/main.c
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@ -1118,9 +1118,10 @@ static void test_mtab(void) {
if (r >= 0 && nulstr_contains(ok, p))
return;
log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
"This is not supported anymore. "
"Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
log_error("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
"This is not supported anymore. "
"Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
freeze();
}
static void test_usr(void) {