#include "fstab-util.h"
#include "generator.h"
#include "log.h"
+#include "main-func.h"
#include "mkdir.h"
#include "mount-setup.h"
#include "mount-util.h"
+#include "mountpoint-util.h"
#include "parse-util.h"
#include "path-util.h"
#include "proc-cmdline.h"
GROWFS = 1 << 4,
} MountpointFlags;
-static const char *arg_dest = "/tmp";
-static const char *arg_dest_late = "/tmp";
+static const char *arg_dest = NULL;
+static const char *arg_dest_late = NULL;
static bool arg_fstab_enabled = true;
static char *arg_root_what = NULL;
static char *arg_root_fstype = NULL;
static char *arg_usr_options = NULL;
static VolatileMode arg_volatile_mode = _VOLATILE_MODE_INVALID;
+STATIC_DESTRUCTOR_REGISTER(arg_root_what, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_root_fstype, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_root_options, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_root_hash, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_usr_what, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_usr_fstype, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_usr_options, freep);
+
static int write_options(FILE *f, const char *options) {
_cleanup_free_ char *o = NULL;
int r = 0;
fstab_path = initrd ? "/sysroot/etc/fstab" : "/etc/fstab";
+ log_debug("Parsing %s...", fstab_path);
+
f = setmntent(fstab_path, "re");
if (!f) {
if (errno == ENOENT)
if (!what)
return log_oom();
- if (is_device_path(what) && path_is_read_only_fs("sys") > 0) {
+ if (is_device_path(what) && path_is_read_only_fs("/sys") > 0) {
log_info("Running in a container, ignoring fstab device entry for %s.", what);
continue;
}
noauto = fstab_test_yes_no_option(me->mnt_opts, "noauto\0" "auto\0");
nofail = fstab_test_yes_no_option(me->mnt_opts, "nofail\0" "fail\0");
- log_debug("Found entry what=%s where=%s type=%s makefs=%s nofail=%s noauto=%s",
+ log_debug("Found entry what=%s where=%s type=%s makefs=%s growfs=%s noauto=%s nofail=%s",
what, where, me->mnt_type,
- yes_no(makefs),
+ yes_no(makefs), yes_no(growfs),
yes_no(noauto), yes_no(nofail));
if (streq(me->mnt_type, "swap"))
}
static int add_volatile_root(void) {
- const char *from, *to;
-
- if (arg_volatile_mode != VOLATILE_YES)
- return 0;
-
/* Let's add in systemd-remount-volatile.service which will remount the root device to tmpfs if this is
* requested, leaving only /usr from the root mount inside. */
- from = strjoina(SYSTEM_DATA_UNIT_PATH "/systemd-volatile-root.service");
- to = strjoina(arg_dest, "/" SPECIAL_INITRD_ROOT_FS_TARGET, ".requires/systemd-volatile-root.service");
-
- (void) mkdir_parents(to, 0755);
-
- if (symlink(from, to) < 0)
- return log_error_errno(errno, "Failed to hook in volatile remount service: %m");
+ if (arg_volatile_mode != VOLATILE_YES)
+ return 0;
- return 0;
+ return generator_add_symlink(arg_dest, SPECIAL_INITRD_ROOT_FS_TARGET, "requires",
+ SYSTEM_DATA_UNIT_PATH "/" SPECIAL_VOLATILE_ROOT_SERVICE);
}
static int add_volatile_var(void) {
return 1;
}
-int main(int argc, char *argv[]) {
- int r = 0;
-
- if (argc > 1 && argc != 4) {
- log_error("This program takes three or no arguments.");
- return EXIT_FAILURE;
- }
-
- if (argc > 1)
- arg_dest = argv[1];
- if (argc > 3)
- arg_dest_late = argv[3];
+static int run(const char *dest, const char *dest_early, const char *dest_late) {
+ int r, r2 = 0, r3 = 0;
- log_set_prohibit_ipc(true);
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
-
- umask(0022);
+ assert_se(arg_dest = dest);
+ assert_se(arg_dest_late = dest_late);
r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
if (r < 0)
/* Always honour root= and usr= in the kernel command line if we are in an initrd */
if (in_initrd()) {
- int k;
-
r = add_sysroot_mount();
- k = add_sysroot_usr_mount();
- if (k < 0)
- r = k;
+ r2 = add_sysroot_usr_mount();
- k = add_volatile_root();
- if (k < 0)
- r = k;
+ r3 = add_volatile_root();
} else
r = add_volatile_var();
/* Honour /etc/fstab only when that's enabled */
if (arg_fstab_enabled) {
- int k;
-
- log_debug("Parsing /etc/fstab");
-
/* Parse the local /etc/fstab, possibly from the initrd */
- k = parse_fstab(false);
- if (k < 0)
- r = k;
+ r2 = parse_fstab(false);
/* If running in the initrd also parse the /etc/fstab from the host */
- if (in_initrd()) {
- log_debug("Parsing /sysroot/etc/fstab");
-
- k = parse_fstab(true);
- if (k < 0)
- r = k;
- }
+ if (in_initrd())
+ r3 = parse_fstab(true);
+ else
+ r3 = generator_enable_remount_fs_service(arg_dest);
}
- free(arg_root_what);
- free(arg_root_fstype);
- free(arg_root_options);
- free(arg_root_hash);
-
- free(arg_usr_what);
- free(arg_usr_fstype);
- free(arg_usr_options);
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ return r < 0 ? r : r2 < 0 ? r2 : r3;
}
+
+DEFINE_MAIN_GENERATOR_FUNCTION(run);