static int add_filesystem(char ***filesystems, char *name)
{
int n = 0;
assert(filesystems);
assert(name);
if (*filesystems) {
char **p;
for (n = 0, p = *filesystems; *p; p++, n++) {
if (strcmp(*p, name) == 0)
return 0;
}
}
#define MYCHUNK 16
if (n == 0 || !((n + 1) % MYCHUNK)) {
size_t items = ((n + 1 + MYCHUNK) / MYCHUNK) * MYCHUNK;
char **x = realloc(*filesystems, items * sizeof(char *));
if (!x)
goto err;
*filesystems = x;
}
name = strdup(name);
if (!name)
goto err;
(*filesystems)[n] = name;
(*filesystems)[n + 1] = NULL;
return 0;
err:
mnt_free_filesystems(*filesystems);
return -ENOMEM;
}
static int do_mount_by_pattern(struct libmnt_context *cxt, const char *pattern)
{
int neg = pattern && strncmp(pattern, "no", 2) == 0;
int rc = -EINVAL;
char **filesystems, **fp;
assert(cxt);
assert((cxt->flags & MNT_FL_MOUNTFLAGS_MERGED));
if (!neg && pattern) {
/*
* try all types from the list
*/
char *p, *p0;
DBG(CXT, mnt_debug_h(cxt, "trying to mount by FS pattern list"));
p0 = p = strdup(pattern);
if (!p)
return -ENOMEM;
do {
char *end = strchr(p, ',');
if (end)
*end = '\0';
rc = do_mount(cxt, p);
p = end ? end + 1 : NULL;
} while (!mnt_context_get_status(cxt) && p);
free(p0);
if (mnt_context_get_status(cxt))
return rc;
}
/*
* try /etc/filesystems and /proc/filesystems
*/
DBG(CXT, mnt_debug_h(cxt, "trying to mount by filesystems lists"));
rc = mnt_get_filesystems(&filesystems, neg ? pattern : NULL);
if (rc)
return rc;
for (fp = filesystems; *fp; fp++) {
rc = do_mount(cxt, *fp);
if (mnt_context_get_status(cxt))
break;
if (mnt_context_get_syscall_errno(cxt) != EINVAL)
break;
}
mnt_free_filesystems(filesystems);
return rc;
}
int test_filesystems(struct libmnt_test *ts, int argc, char *argv[])
{
char **filesystems = NULL;
int rc;
rc = mnt_get_filesystems(&filesystems, argc ? argv[1] : NULL);
if (!rc) {
char **p;
for (p = filesystems; *p; p++)
printf("%s\n", *p);
mnt_free_filesystems(filesystems);
}
return rc;
}