/*-*- Mode: C; c-basic-offset: 8 -*-*/
#include <errno.h>
+#include <stdio.h>
+#include <mntent.h>
-#include "name.h"
+#include "unit.h"
#include "mount.h"
#include "load-fragment.h"
#include "load-fstab.h"
#include "load-dropin.h"
+#include "log.h"
-static int mount_load(Name *n) {
+static int mount_init(Unit *u) {
int r;
- Mount *m = MOUNT(n);
+ Mount *m = MOUNT(u);
assert(m);
/* Load a .mount file */
- if ((r = name_load_fragment(n)) < 0 && errno != -ENOENT)
+ if ((r = unit_load_fragment(u)) < 0)
return r;
/* Load entry from /etc/fstab */
- if ((r = name_load_fstab(n)) < 0)
+ if ((r = unit_load_fstab(u)) < 0)
return r;
/* Load drop-in directory data */
- if ((r = name_load_dropin(n)) < 0)
+ if ((r = unit_load_dropin(u)) < 0)
return r;
return r;
}
-static void mount_dump(Name *n, FILE *f, const char *prefix) {
+static void mount_done(Unit *u) {
+ Mount *d = MOUNT(u);
+
+ assert(d);
+ free(d->what);
+ free(d->where);
+}
+
+static void mount_dump(Unit *u, FILE *f, const char *prefix) {
static const char* const state_table[_MOUNT_STATE_MAX] = {
[MOUNT_DEAD] = "dead",
[MOUNT_MAINTAINANCE] = "maintainance"
};
- Mount *s = MOUNT(n);
+ Mount *s = MOUNT(u);
assert(s);
fprintf(f,
"%sMount State: %s\n"
- "%sPath: %s\n",
+ "%sWhere: %s\n"
+ "%sWhat: %s\n",
prefix, state_table[s->state],
- prefix, s->path);
+ prefix, s->where,
+ prefix, s->what);
}
-static NameActiveState mount_active_state(Name *n) {
+static void mount_shutdown(Manager *m) {
+}
- static const NameActiveState table[_MOUNT_STATE_MAX] = {
- [MOUNT_DEAD] = NAME_INACTIVE,
- [MOUNT_MOUNTING] = NAME_ACTIVATING,
- [MOUNT_MOUNTED] = NAME_ACTIVE,
- [MOUNT_UNMOUNTING] = NAME_DEACTIVATING,
- [MOUNT_MAINTAINANCE] = NAME_INACTIVE,
- };
+static int mount_add_node_links(Mount *m) {
+ Unit *device;
+ char *e;
+ int r;
+
+ assert(m);
+
+ /* Adds in links to the device that this node is based on */
+
+ if (!path_startswith(m->what, "/dev/"))
+ return 0;
+
+ if (!(e = unit_name_escape_path("node-", m->what+1, ".device")))
+ return -ENOMEM;
+
+ r = manager_load_unit(UNIT(m)->meta.manager, e, &device);
+ free(e);
+
+ if (r < 0)
+ return r;
- return table[MOUNT(n)->state];
+ if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, device)) < 0)
+ return r;
+
+ if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, device)) < 0)
+ return r;
+
+ if ((r = unit_add_dependency(device, UNIT_WANTS, UNIT(m))) < 0)
+ return r;
+
+ return 0;
}
-static void mount_free_hook(Name *n) {
- Mount *d = MOUNT(n);
+static int mount_add_path_links(Mount *m) {
+ Iterator i;
+ Unit *other;
+ int r;
+
+ /* Adds in link to other mount points, that might lie below or
+ * above us in the hierarchy */
- assert(d);
- free(d->path);
+ HASHMAP_FOREACH(other, UNIT(m)->meta.manager->units, i) {
+ Mount *n;
+
+ if (other->meta.type != UNIT_MOUNT)
+ continue;
+
+ n = MOUNT(other);
+
+ if (path_startswith(m->where, n->where)) {
+
+ if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, other)) < 0)
+ return r;
+
+ if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, other)) < 0)
+ return r;
+
+ } else if (startswith(n->where, m->where)) {
+
+ if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, other)) < 0)
+ return r;
+
+ if ((r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m))) < 0)
+ return r;
+ }
+ }
+
+ return 0;
}
-const NameVTable mount_vtable = {
+static int mount_add_one(Manager *m, const char *what, const char *where) {
+ char *e;
+ int r;
+ Unit *u;
+ bool delete;
+
+ assert(what);
+ assert(where);
+
+ /* probably some kind of swap, which we don't cover for now */
+ if (where[0] != '/')
+ return 0;
+
+ if (streq(where, "/"))
+ e = strdup("rootfs.mount");
+ else
+ e = unit_name_escape_path("fs-", where+1, ".mount");
+
+ if (!e)
+ return -ENOMEM;
+
+ if (!(u = manager_get_unit(m, e))) {
+ delete = true;
+
+ if (!(u = unit_new(m))) {
+ free(e);
+ return -ENOMEM;
+ }
+
+ r = unit_add_name(u, e);
+ free(e);
+
+ if (r < 0)
+ goto fail;
+
+ if (!(MOUNT(u)->what = strdup(what)) ||
+ !(MOUNT(u)->where = strdup(where)) ||
+ !(u->meta.description = strdup(where))) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ } else {
+ delete = false;
+ free(e);
+ }
+
+ if ((r = mount_add_node_links(MOUNT(u))) < 0)
+ goto fail;
+
+ if ((r = mount_add_path_links(MOUNT(u))) < 0)
+ goto fail;
+
+ unit_add_to_load_queue(u);
+ return 0;
+
+fail:
+ if (delete && u)
+ unit_free(u);
+
+ return 0;
+}
+
+static char *fstab_node_to_udev_node(char *p) {
+ char *dn, *t;
+ int r;
+
+ /* FIXME: to follow udev's logic 100% we need to leave valid
+ * UTF8 chars unescaped */
+
+ if (startswith(p, "LABEL=")) {
+
+ if (!(t = strdup(p+6)))
+ return NULL;
+
+ r = asprintf(&dn, "/dev/disk/by-label/%s", xescape(t, "/ "));
+ free(t);
+
+ if (r < 0)
+ return NULL;
+
+ return dn;
+ }
+
+ if (startswith(p, "UUID=")) {
+
+ if (!(t = strdup(p+5)))
+ return NULL;
+
+ r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(xescape(t, "/ ")));
+ free(t);
+
+ if (r < 0)
+ return NULL;
+
+ return dn;
+ }
+
+ return strdup(p);
+}
+
+static int mount_load_etc_fstab(Manager *m) {
+ FILE *f;
+ int r;
+ struct mntent* me;
+
+ assert(m);
+
+ errno = 0;
+ if (!(f = setmntent("/etc/fstab", "r")))
+ return -errno;
+
+ while ((me = getmntent(f))) {
+ char *where, *what;
+
+ if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (!(where = strdup(me->mnt_dir))) {
+ free(what);
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (what[0] == '/')
+ path_kill_slashes(what);
+
+ if (where[0] == '/')
+ path_kill_slashes(where);
+
+ r = mount_add_one(m, what, where);
+ free(what);
+ free(where);
+
+ if (r < 0)
+ goto finish;
+ }
+
+ r = 0;
+finish:
+
+ endmntent(f);
+ return r;
+}
+
+static int mount_load_proc_mounts(Manager *m) {
+ FILE *f;
+ int r;
+
+ assert(m);
+
+ if (!(f = fopen("/proc/self/mountinfo", "r")))
+ return -errno;
+
+ for (;;) {
+ int k;
+ char *device, *path, *d, *p;
+
+ if ((k = fscanf(f,
+ "%*s " /* (1) mount id */
+ "%*s " /* (2) parent id */
+ "%*s " /* (3) major:minor */
+ "%*s " /* (4) root */
+ "%ms " /* (5) mount point */
+ "%*s" /* (6) mount options */
+ "%*[^-]" /* (7) optional fields */
+ "- " /* (8) seperator */
+ "%*s " /* (9) file system type */
+ "%ms" /* (10) mount source */
+ "%*[^\n]", /* some rubbish at the end */
+ &path,
+ &device)) != 2) {
+
+ if (k == EOF) {
+ if (feof(f))
+ break;
+
+ r = -errno;
+ goto finish;
+ }
+
+ r = -EBADMSG;
+ goto finish;
+ }
+
+ if (!(d = cunescape(device))) {
+ free(device);
+ free(path);
+ r = -ENOMEM;
+ goto finish;
+ }
+ free(device);
+
+ if (!(p = cunescape(path))) {
+ free(d);
+ free(path);
+ r = -ENOMEM;
+ goto finish;
+ }
+ free(path);
+
+ r = mount_add_one(m, d, p);
+ free(d);
+ free(p);
+
+ if (r < 0)
+ goto finish;
+ }
+
+ r = 0;
+
+finish:
+ fclose(f);
+
+ return r;
+}
+
+static int mount_enumerate(Manager *m) {
+ int r;
+ assert(m);
+
+ if ((r = mount_load_etc_fstab(m)) < 0)
+ goto fail;
+
+ if ((r = mount_load_proc_mounts(m)) < 0)
+ goto fail;
+
+ return 0;
+
+fail:
+ mount_shutdown(m);
+ return r;
+}
+
+static UnitActiveState mount_active_state(Unit *u) {
+
+ static const UnitActiveState table[_MOUNT_STATE_MAX] = {
+ [MOUNT_DEAD] = UNIT_INACTIVE,
+ [MOUNT_MOUNTING] = UNIT_ACTIVATING,
+ [MOUNT_MOUNTED] = UNIT_ACTIVE,
+ [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
+ [MOUNT_MAINTAINANCE] = UNIT_INACTIVE,
+ };
+
+ return table[MOUNT(u)->state];
+}
+
+const UnitVTable mount_vtable = {
.suffix = ".mount",
- .load = mount_load,
+ .init = mount_init,
+ .done = mount_done,
.dump = mount_dump,
- .start = NULL,
- .stop = NULL,
- .reload = NULL,
-
- .active_state = mount_active_state,
+ .enumerate = mount_enumerate,
+ .shutdown = mount_shutdown,
- .free_hook = mount_free_hook
+ .active_state = mount_active_state
};
~ianmdlvl / elogind.git / blobdiff