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mount: make sure m->where is set before unit_add_exec_dependencies()

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If you enter unit_add_exec_dependencies with m->where = NULL, you'll
very likely end up aborting somewhere under socket_needs_mount.

(When systemd goes to check to see if the journald socket requires your
mount, it'll do path_startswith(path, m->where)... *kaboom*)

This patch should ensure that:

    a) both branches in mount_add_one() set m->where, and
    b) mount_add_extras() calls unit_add_exec_dependencies() *after*
       setting m->where.
This commit is contained in:
Will Woods
2012-10-23 01:53:02 +02:00
committed by Lennart Poettering
parent 5411ae4782
commit bcbd5405b1
1 changed files with 12 additions and 4 deletions
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src/core/mount.c
+12 -4
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@@ -547,10 +547,6 @@ static int mount_add_extras(Mount *m) {
Unit *u = UNIT(m);
int r;
r = unit_add_exec_dependencies(u, &m->exec_context);
if (r < 0)
return r;
if (UNIT(m)->fragment_path)
m->from_fragment = true;
@@ -562,6 +558,10 @@ static int mount_add_extras(Mount *m) {
path_kill_slashes(m->where);
r = unit_add_exec_dependencies(u, &m->exec_context);
if (r < 0)
return r;
if (!UNIT(m)->description) {
r = unit_set_description(u, m->where);
if (r < 0)
@@ -1459,6 +1459,14 @@ static int mount_add_one(
delete = false;
free(e);
if (!MOUNT(u)->where) {
MOUNT(u)->where = strdup(where);
if (!MOUNT(u)->where) {
r = -ENOMEM;
goto fail;
}
}
if (u->load_state == UNIT_ERROR) {
u->load_state = UNIT_LOADED;
u->load_error = 0;