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tests: add tests for umount

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Signed-off-by: Liza Tretyakova <elizabet.tretyakova@gmail.com>
This commit is contained in:
Liza Tretyakova 2018-05-12 13:59:22 +03:00 committed by Christian Brauner
parent d83da817b3
commit c8c568c85f
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GPG Key ID: 8EB056D53EECB12D
1 changed files with 48 additions and 12 deletions
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60
src/tests/mount_injection.c
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@ -36,12 +36,13 @@
#define NAME "mount_injection_test-"
#define TEMPLATE P_tmpdir"/mount_injection_XXXXXX"
struct mountinfo_strings {
struct mountinfo_data {
const char *mount_root;
const char *mount_point;
const char *fstype;
const char *mount_source;
const char *message;
bool should_be_present;
};
static int comp_field(char *line, const char *str, int nfields)
@ -72,29 +73,33 @@ static int find_in_proc_mounts(void *data)
{
char buf[LXC_LINELEN];
FILE *f;
struct mountinfo_strings *strs = (struct mountinfo_strings *) data;
struct mountinfo_data *mdata = (struct mountinfo_data *) data;
fprintf(stderr, "%s", strs->message);
fprintf(stderr, "%s", mdata->message);
f = fopen("/proc/self/mountinfo", "r");
if (!f)
return 0;
while (fgets(buf, LXC_LINELEN, f)) {
if (comp_field(buf, strs->mount_root, 3) == 0 && comp_field(buf, strs->mount_point, 4) == 0) {
if (comp_field(buf, mdata->mount_root, 3) == 0 && comp_field(buf, mdata->mount_point, 4) == 0) {
char *buf2 = strchr(buf, '-');
if (comp_field(buf2, strs->fstype, 1) == 0 && comp_field(buf2, strs->mount_source, 2) == 0) {
if (comp_field(buf2, mdata->fstype, 1) == 0 && comp_field(buf2, mdata->mount_source, 2) == 0) {
fclose(f);
fprintf(stderr, "OK\n");
_exit(EXIT_SUCCESS);
fprintf(stderr, "PRESENT\n");
if (mdata->should_be_present)
_exit(EXIT_SUCCESS);
_exit(EXIT_FAILURE);
}
}
}
fclose(f);
fprintf(stderr, "ERR\n");
fprintf(stderr, "MISSING\n");
if (!mdata->should_be_present)
_exit(EXIT_SUCCESS);
_exit(EXIT_FAILURE);
}
static int check_containers_mountinfo(struct lxc_container *c, struct mountinfo_strings *d)
static int check_containers_mountinfo(struct lxc_container *c, struct mountinfo_data *d)
{
pid_t pid;
int ret = -1;
@ -126,18 +131,20 @@ static int perform_container_test(const char *name, const char *config_items[])
struct lxc_log log;
int ret = -1, dev_msg_size = sizeof("Check urandom device injected into "" - ") - 1 + strlen(name) + 1,
dir_msg_size = sizeof("Check dir "" injected into "" - ") - 1 + sizeof(TEMPLATE) - 1 + strlen(name) + 1;
struct mountinfo_strings device = {
struct mountinfo_data device = {
.mount_root = "/",
.mount_point = "/mnt/mount_injection_test_urandom",
.fstype = "devtmpfs",
.mount_source = "/dev/urandom",
.message = ""
.message = "",
.should_be_present = true
}, dir = {
.mount_root = template_dir,
.mount_point = template_dir,
.fstype = "ext4",
.mount_source = NULL,
.message = ""
.message = "",
.should_be_present = true
};
/* Temp paths and messages setup */
@ -222,6 +229,20 @@ static int perform_container_test(const char *name, const char *config_items[])
goto out;
}
ret = check_containers_mountinfo(c, &device);
if (ret < 0)
goto out;
/* Check device unmounted */
/* TODO: what about other umount flags? */
ret = c->umount(c, "/mnt/mount_injection_test_urandom", MNT_DETACH, &mnt);
if (ret < 0) {
fprintf(stderr, "Failed to umount2 \"/dev/urandom\"\n");
goto out;
}
device.message = "Unmounted \"/mnt/mount_injection_test_urandom\" -- should be missing now: ";
device.should_be_present = false;
ret = check_containers_mountinfo(c, &device);
if (ret < 0)
goto out;
@ -237,6 +258,21 @@ static int perform_container_test(const char *name, const char *config_items[])
if (ret < 0)
goto out;
/* Check dir unmounted */
/* TODO: what about other umount flags? */
ret = c->umount(c, template_dir, MNT_DETACH, &mnt);
if (ret < 0) {
fprintf(stderr, "Failed to umount2 \"%s\"\n", template_dir);
goto out;
}
dir.message = "Unmounted dir -- should be missing now: ";
dir.should_be_present = false;
ret = check_containers_mountinfo(c, &dir);
if (ret < 0)
goto out;
/* Finalize the container */
if (!c->stop(c)) {
fprintf(stderr, "Stopping the container (%s) failed...\n", name);
goto out;