#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/statfs.h>
-#include <blkid.h>
+#include <blkid/blkid.h>
#ifdef HAVE_LINUX_BTRFS_H
#include <linux/btrfs.h>
#include "missing.h"
#include "sd-id128.h"
#include "libudev.h"
+#include "udev-util.h"
#include "special.h"
#include "unit-name.h"
#include "virt.h"
-
-/* TODO:
- *
- * - Properly handle cryptsetup partitions
- * - Define new partition type for encrypted swap
- * - Make /home automount rather than mount
- *
- */
-
-#define GPT_SWAP SD_ID128_MAKE(06,57,fd,6d,a4,ab,43,c4,84,e5,09,33,c8,4b,4f,4f)
-#define GPT_HOME SD_ID128_MAKE(93,3a,c7,e1,2e,b4,4f,13,b8,44,0e,14,e2,ae,f9,15)
+#include "generator.h"
+#include "gpt.h"
static const char *arg_dest = "/tmp";
-static inline void blkid_free_probep(blkid_probe *b) {
- if (*b)
- blkid_free_probe(*b);
-}
+DEFINE_TRIVIAL_CLEANUP_FUNC(blkid_probe, blkid_free_probe);
#define _cleanup_blkid_freep_probe_ _cleanup_(blkid_free_probep)
static int verify_gpt_partition(const char *node, sd_id128_t *type, unsigned *nr, char **fstype) {
errno = 0;
r = blkid_do_safeprobe(b);
- if (r == -2)
- return -ENODEV;
- else if (r == 1)
- return -ENODEV;
+ if (r == -2 || r == 1) /* no result or uncertain */
+ return -EBADSLT;
else if (r != 0)
return errno ? -errno : -EIO;
fprintf(f,
"# Automatically generated by systemd-gpt-auto-generator\n\n"
- "[Unit]\n"
- "DefaultDependencies=no\n"
- "Conflicts=" SPECIAL_UMOUNT_TARGET "\n"
- "Before=" SPECIAL_UMOUNT_TARGET " " SPECIAL_SWAP_TARGET "\n\n"
"[Swap]\n"
"What=%s\n",
path);
return 0;
}
-static int add_home(const char *path, const char *fstype) {
- _cleanup_free_ char *unit = NULL, *lnk = NULL;
+static int add_mount(const char *what, const char *where, const char *fstype, const char *description) {
+ _cleanup_free_ char *unit = NULL, *lnk = NULL, *p = NULL;
_cleanup_fclose_ FILE *f = NULL;
+ int r;
- if (dir_is_empty("/home") <= 0)
+ if (dir_is_empty(where) <= 0) {
+ log_debug("%s already populated, ignoring.", where);
return 0;
+ }
- log_debug("Adding home: %s %s", path, fstype);
+ log_debug("Adding %s: %s %s", where, what, fstype);
- unit = strappend(arg_dest, "/home.mount");
+ unit = unit_name_from_path(where, ".mount");
if (!unit)
return log_oom();
- f = fopen(unit, "wxe");
+ p = strjoin(arg_dest, "/", unit, NULL);
+ if (!p)
+ return log_oom();
+
+ f = fopen(p, "wxe");
if (!f) {
log_error("Failed to create unit file %s: %m", unit);
return -errno;
fprintf(f,
"# Automatically generated by systemd-gpt-auto-generator\n\n"
"[Unit]\n"
- "DefaultDependencies=no\n"
- "After=" SPECIAL_LOCAL_FS_PRE_TARGET "\n"
- "Conflicts=" SPECIAL_UMOUNT_TARGET "\n"
- "Before=" SPECIAL_UMOUNT_TARGET " " SPECIAL_LOCAL_FS_TARGET "\n\n"
+ "Description=%s\n",
+ description);
+
+ r = generator_write_fsck_deps(f, arg_dest, what, where, fstype);
+ if (r < 0)
+ return r;
+
+ fprintf(f,
+ "\n"
"[Mount]\n"
"What=%s\n"
- "Where=/home\n"
- "Type=%s\n"
- "FsckPassNo=2\n",
- path, fstype);
+ "Where=%s\n"
+ "Type=%s\n",
+ what, where, fstype);
fflush(f);
if (ferror(f)) {
return -errno;
}
- lnk = strjoin(arg_dest, "/" SPECIAL_LOCAL_FS_TARGET ".requires/home.mount", NULL);
+ lnk = strjoin(arg_dest, "/" SPECIAL_LOCAL_FS_TARGET ".requires/", unit, NULL);
if (!lnk)
return log_oom();
-
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
}
static int enumerate_partitions(struct udev *udev, dev_t dev) {
- struct udev_enumerate *e = NULL;
- struct udev_device *parent = NULL, *d = NULL;
+ _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+ _cleanup_free_ char *home = NULL, *home_fstype = NULL, *srv = NULL, *srv_fstype = NULL;
+ unsigned home_nr = (unsigned) -1, srv_nr = (unsigned )-1;
struct udev_list_entry *first, *item;
- unsigned home_nr = (unsigned) -1;
- _cleanup_free_ char *home = NULL, *home_fstype = NULL;
+ struct udev_device *parent = NULL;
int r;
e = udev_enumerate_new(udev);
return log_oom();
d = udev_device_new_from_devnum(udev, 'b', dev);
- if (!d) {
- r = log_oom();
- goto finish;
- }
+ if (!d)
+ return log_oom();
parent = udev_device_get_parent(d);
- if (!parent) {
- r = log_oom();
- goto finish;
- }
+ if (!parent)
+ return log_oom();
r = udev_enumerate_add_match_parent(e, parent);
- if (r < 0) {
- r = log_oom();
- goto finish;
- }
+ if (r < 0)
+ return log_oom();
r = udev_enumerate_add_match_subsystem(e, "block");
- if (r < 0) {
- r = log_oom();
- goto finish;
- }
+ if (r < 0)
+ return log_oom();
r = udev_enumerate_scan_devices(e);
if (r < 0) {
- log_error("Failed to enumerate partitions on /dev/block/%u:%u: %s",
- major(dev), minor(dev), strerror(-r));
- goto finish;
+ log_error("Failed to enumerate partitions on /dev/block/%u:%u: %s", major(dev), minor(dev), strerror(-r));
+ return r;
}
first = udev_enumerate_get_list_entry(e);
udev_list_entry_foreach(item, first) {
+ _cleanup_udev_device_unref_ struct udev_device *q;
_cleanup_free_ char *fstype = NULL;
const char *node = NULL;
- struct udev_device *q;
sd_id128_t type_id;
unsigned nr;
q = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));
- if (!q) {
- r = log_oom();
- goto finish;
- }
+ if (!q)
+ return log_oom();
if (udev_device_get_devnum(q) == udev_device_get_devnum(d))
- goto skip;
+ continue;
if (udev_device_get_devnum(q) == udev_device_get_devnum(parent))
- goto skip;
+ continue;
node = udev_device_get_devnode(q);
- if (!node) {
- r = log_oom();
- goto finish;
- }
+ if (!node)
+ return log_oom();
r = verify_gpt_partition(node, &type_id, &nr, &fstype);
if (r < 0) {
- log_error("Failed to verify GPT partition %s: %s",
- node, strerror(-r));
- udev_device_unref(q);
- goto finish;
+ /* skip child devices which are not detected properly */
+ if (r == -EBADSLT)
+ continue;
+ log_error("Failed to verify GPT partition %s: %s", node, strerror(-r));
+ return r;
}
if (r == 0)
- goto skip;
+ continue;
if (sd_id128_equal(type_id, GPT_SWAP))
add_swap(node, fstype);
+
else if (sd_id128_equal(type_id, GPT_HOME)) {
- if (!home || nr < home_nr) {
- free(home);
- home = strdup(node);
- if (!home) {
- r = log_oom();
- goto finish;
- }
-
- home_nr = nr;
-
- free(home_fstype);
- home_fstype = fstype;
- fstype = NULL;
- }
- }
- skip:
- udev_device_unref(q);
- }
+ /* We only care for the first /home partition */
+ if (home && nr >= home_nr)
+ continue;
- if (home && home_fstype)
- add_home(home, home_fstype);
+ home_nr = nr;
+
+ free(home);
+ home = strdup(node);
+ if (!home)
+ return log_oom();
-finish:
- if (d)
- udev_device_unref(d);
+ free(home_fstype);
+ home_fstype = fstype;
+ fstype = NULL;
- if (e)
- udev_enumerate_unref(e);
+ } else if (sd_id128_equal(type_id, GPT_SRV)) {
+
+ /* We only care for the first /srv partition */
+ if (srv && nr >= srv_nr)
+ continue;
+
+ srv_nr = nr;
+
+ free(srv);
+ srv = strdup(node);
+ if (!srv)
+ return log_oom();
+
+ free(srv_fstype);
+ srv_fstype = fstype;
+ fstype = NULL;
+ }
+ }
+
+ if (home && home_fstype)
+ add_mount(home, "/home", home_fstype, "Home Partition");
+ if (srv && srv_fstype)
+ add_mount(srv, "/srv", srv_fstype, "Server Data Partition");
return r;
}
assert(path);
assert(dev);
- if (lstat("/", &st))
+ if (lstat(path, &st))
return -errno;
if (major(st.st_dev) != 0) {
return 1;
}
- if (statfs("/", &sfs) < 0)
+ if (statfs(path, &sfs) < 0)
return -errno;
if (F_TYPE_EQUAL(sfs.f_type, BTRFS_SUPER_MAGIC))
}
static int devno_to_devnode(struct udev *udev, dev_t devno, char **ret) {
- struct udev_device *d = NULL;
+ _cleanup_udev_device_unref_ struct udev_device *d;
const char *t;
char *n;
- int r;
d = udev_device_new_from_devnum(udev, 'b', devno);
if (!d)
return log_oom();
t = udev_device_get_devnode(d);
- if (!t) {
- r = -ENODEV;
- goto finish;
- }
+ if (!t)
+ return -ENODEV;
n = strdup(t);
- if (!n) {
- r = -ENOMEM;
- goto finish;
- }
+ if (!n)
+ return -ENOMEM;
*ret = n;
- r = 0;
-
-finish:
- udev_device_unref(d);
-
- return r;
+ return 0;
}
int main(int argc, char *argv[]) {
+ _cleanup_udev_unref_ struct udev *udev = NULL;
_cleanup_free_ char *node = NULL;
- struct udev *udev = NULL;
dev_t devno;
- int r;
+ int r = 0;
if (argc > 1 && argc != 4) {
log_error("This program takes three or no arguments.");
- r = -EINVAL;
- goto finish;
+ return EXIT_FAILURE;
}
if (argc > 1)
if (in_initrd()) {
log_debug("In initrd, exiting.");
- r = 0;
- goto finish;
+ return EXIT_SUCCESS;
}
if (detect_container(NULL) > 0) {
log_debug("In a container, exiting.");
- r = 0;
- goto finish;
+ return EXIT_SUCCESS;
}
r = get_block_device("/", &devno);
if (r < 0) {
log_error("Failed to determine block device of root file system: %s", strerror(-r));
- goto finish;
- }
- if (r == 0) {
+ return EXIT_FAILURE;
+ } else if (r == 0) {
log_debug("Root file system not on a (single) block device.");
- goto finish;
+ return EXIT_SUCCESS;
}
udev = udev_new();
if (!udev) {
- r = log_oom();
- goto finish;
+ log_oom();
+ return EXIT_FAILURE;
}
r = devno_to_devnode(udev, devno, &node);
if (r < 0) {
log_error("Failed to determine block device node from major/minor: %s", strerror(-r));
- goto finish;
+ return EXIT_FAILURE;
}
log_debug("Root device %s.", node);
r = verify_gpt_partition(node, NULL, NULL, NULL);
if (r < 0) {
log_error("Failed to verify GPT partition %s: %s", node, strerror(-r));
- goto finish;
+ return EXIT_FAILURE;
+ }
+ if (r == 0) {
+ log_debug("Not a GPT disk, exiting.");
+ return EXIT_SUCCESS;
}
- if (r == 0)
- goto finish;
r = enumerate_partitions(udev, devno);
+ if (r < 0)
+ return EXIT_FAILURE;
-finish:
- if (udev)
- udev_unref(udev);
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ return EXIT_SUCCESS;
}
~ianmdlvl / elogind.git / blobdiff