build-sys: move a few things into more appropriate places

1 files changed, 0 insertions, 644 deletions

diff --git a/src/shared/umount.c b/src/shared/umount.c
deleted file mode 100644
index 24c0947f21..0000000000
--- a/src/shared/umount.c
+++ /dev/null
@@ -1,644 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 ProFUSION embedded systems
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/mount.h>
-#include <sys/swap.h>
-#include <unistd.h>
-#include <linux/loop.h>
-#include <linux/dm-ioctl.h>
-#include <libudev.h>
-
-#include "list.h"
-#include "mount-setup.h"
-#include "umount.h"
-#include "util.h"
-
-typedef struct MountPoint {
-        char *path;
-        dev_t devnum;
-        bool skip_ro;
-        LIST_FIELDS (struct MountPoint, mount_point);
-} MountPoint;
-
-static void mount_point_free(MountPoint **head, MountPoint *m) {
-        assert(head);
-        assert(m);
-
-        LIST_REMOVE(MountPoint, mount_point, *head, m);
-
-        free(m->path);
-        free(m);
-}
-
-static void mount_points_list_free(MountPoint **head) {
-        assert(head);
-
-        while (*head)
-                mount_point_free(head, *head);
-}
-
-static int mount_points_list_get(MountPoint **head) {
-        FILE *proc_self_mountinfo;
-        char *path, *p;
-        unsigned int i;
-        int r;
-
-        assert(head);
-
-        if (!(proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
-                return -errno;
-
-        for (i = 1;; i++) {
-                int k;
-                MountPoint *m;
-                char *root;
-                bool skip_ro;
-
-                path = p = NULL;
-
-                if ((k = fscanf(proc_self_mountinfo,
-                                "%*s "       /* (1) mount id */
-                                "%*s "       /* (2) parent id */
-                                "%*s "       /* (3) major:minor */
-                                "%ms "       /* (4) root */
-                                "%ms "       /* (5) mount point */
-                                "%*s"        /* (6) mount options */
-                                "%*[^-]"     /* (7) optional fields */
-                                "- "         /* (8) separator */
-                                "%*s "       /* (9) file system type */
-                                "%*s"        /* (10) mount source */
-                                "%*s"        /* (11) mount options 2 */
-                                "%*[^\n]",   /* some rubbish at the end */
-                                &root,
-                                &path)) != 2) {
-                        if (k == EOF)
-                                break;
-
-                        log_warning("Failed to parse /proc/self/mountinfo:%u.", i);
-
-                        free(path);
-                        continue;
-                }
-
-                /* If we encounter a bind mount, don't try to remount
-                 * the source dir too early */
-                skip_ro = !streq(root, "/");
-                free(root);
-
-                p = cunescape(path);
-                free(path);
-
-                if (!p) {
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                if (mount_point_is_api(p) || mount_point_ignore(p)) {
-                        free(p);
-                        continue;
-                }
-
-                if (!(m = new0(MountPoint, 1))) {
-                        free(p);
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                m->path = p;
-                m->skip_ro = skip_ro;
-                LIST_PREPEND(MountPoint, mount_point, *head, m);
-        }
-
-        r = 0;
-
-finish:
-        fclose(proc_self_mountinfo);
-
-        return r;
-}
-
-static int swap_list_get(MountPoint **head) {
-        FILE *proc_swaps;
-        unsigned int i;
-        int r;
-
-        assert(head);
-
-        if (!(proc_swaps = fopen("/proc/swaps", "re")))
-                return (errno == ENOENT) ? 0 : -errno;
-
-        (void) fscanf(proc_swaps, "%*s %*s %*s %*s %*s\n");
-
-        for (i = 2;; i++) {
-                MountPoint *swap;
-                char *dev = NULL, *d;
-                int k;
-
-                if ((k = fscanf(proc_swaps,
-                                "%ms " /* device/file */
-                                "%*s " /* type of swap */
-                                "%*s " /* swap size */
-                                "%*s " /* used */
-                                "%*s\n", /* priority */
-                                &dev)) != 1) {
-
-                        if (k == EOF)
-                                break;
-
-                        log_warning("Failed to parse /proc/swaps:%u.", i);
-
-                        free(dev);
-                        continue;
-                }
-
-                if (endswith(dev, "(deleted)")) {
-                        free(dev);
-                        continue;
-                }
-
-                d = cunescape(dev);
-                free(dev);
-
-                if (!d) {
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                if (!(swap = new0(MountPoint, 1))) {
-                        free(d);
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                swap->path = d;
-                LIST_PREPEND(MountPoint, mount_point, *head, swap);
-        }
-
-        r = 0;
-
-finish:
-        fclose(proc_swaps);
-
-        return r;
-}
-
-static int loopback_list_get(MountPoint **head) {
-        int r;
-        struct udev *udev;
-        struct udev_enumerate *e = NULL;
-        struct udev_list_entry *item = NULL, *first = NULL;
-
-        assert(head);
-
-        if (!(udev = udev_new())) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        if (!(e = udev_enumerate_new(udev))) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        if (udev_enumerate_add_match_subsystem(e, "block") < 0 ||
-            udev_enumerate_add_match_sysname(e, "loop*") < 0) {
-                r = -EIO;
-                goto finish;
-        }
-
-        if (udev_enumerate_scan_devices(e) < 0) {
-                r = -EIO;
-                goto finish;
-        }
-
-        first = udev_enumerate_get_list_entry(e);
-        udev_list_entry_foreach(item, first) {
-                MountPoint *lb;
-                struct udev_device *d;
-                char *loop;
-                const char *dn;
-
-                if (!(d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)))) {
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                if (!(dn = udev_device_get_devnode(d))) {
-                        udev_device_unref(d);
-                        continue;
-                }
-
-                loop = strdup(dn);
-                udev_device_unref(d);
-
-                if (!loop) {
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                if (!(lb = new0(MountPoint, 1))) {
-                        free(loop);
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                lb->path = loop;
-                LIST_PREPEND(MountPoint, mount_point, *head, lb);
-        }
-
-        r = 0;
-
-finish:
-        if (e)
-                udev_enumerate_unref(e);
-
-        if (udev)
-                udev_unref(udev);
-
-        return r;
-}
-
-static int dm_list_get(MountPoint **head) {
-        int r;
-        struct udev *udev;
-        struct udev_enumerate *e = NULL;
-        struct udev_list_entry *item = NULL, *first = NULL;
-
-        assert(head);
-
-        if (!(udev = udev_new())) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        if (!(e = udev_enumerate_new(udev))) {
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        if (udev_enumerate_add_match_subsystem(e, "block") < 0 ||
-            udev_enumerate_add_match_sysname(e, "dm-*") < 0) {
-                r = -EIO;
-                goto finish;
-        }
-
-        if (udev_enumerate_scan_devices(e) < 0) {
-                r = -EIO;
-                goto finish;
-        }
-
-        first = udev_enumerate_get_list_entry(e);
-
-        udev_list_entry_foreach(item, first) {
-                MountPoint *m;
-                struct udev_device *d;
-                dev_t devnum;
-                char *node;
-                const char *dn;
-
-                if (!(d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)))) {
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                devnum = udev_device_get_devnum(d);
-                dn = udev_device_get_devnode(d);
-
-                if (major(devnum) == 0 || !dn) {
-                        udev_device_unref(d);
-                        continue;
-                }
-
-                node = strdup(dn);
-                udev_device_unref(d);
-
-                if (!node) {
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                if (!(m = new(MountPoint, 1))) {
-                        free(node);
-                        r = -ENOMEM;
-                        goto finish;
-                }
-
-                m->path = node;
-                m->devnum = devnum;
-                LIST_PREPEND(MountPoint, mount_point, *head, m);
-        }
-
-        r = 0;
-
-finish:
-        if (e)
-                udev_enumerate_unref(e);
-
-        if (udev)
-                udev_unref(udev);
-
-        return r;
-}
-
-static int delete_loopback(const char *device) {
-        int fd, r;
-
-        if ((fd = open(device, O_RDONLY|O_CLOEXEC)) < 0)
-                return errno == ENOENT ? 0 : -errno;
-
-        r = ioctl(fd, LOOP_CLR_FD, 0);
-        close_nointr_nofail(fd);
-
-        if (r >= 0)
-                return 1;
-
-        /* ENXIO: not bound, so no error */
-        if (errno == ENXIO)
-                return 0;
-
-        return -errno;
-}
-
-static int delete_dm(dev_t devnum) {
-        int fd, r;
-        struct dm_ioctl dm;
-
-        assert(major(devnum) != 0);
-
-        if ((fd = open("/dev/mapper/control", O_RDWR|O_CLOEXEC)) < 0)
-                return -errno;
-
-        zero(dm);
-        dm.version[0] = DM_VERSION_MAJOR;
-        dm.version[1] = DM_VERSION_MINOR;
-        dm.version[2] = DM_VERSION_PATCHLEVEL;
-
-        dm.data_size = sizeof(dm);
-        dm.dev = devnum;
-
-        r = ioctl(fd, DM_DEV_REMOVE, &dm);
-        close_nointr_nofail(fd);
-
-        return r >= 0 ? 0 : -errno;
-}
-
-static int mount_points_list_umount(MountPoint **head, bool *changed, bool log_error) {
-        MountPoint *m, *n;
-        int n_failed = 0;
-
-        assert(head);
-
-        LIST_FOREACH_SAFE(mount_point, m, n, *head) {
-                if (path_equal(m->path, "/")
-#ifndef HAVE_SPLIT_USR
-                    || path_equal(m->path, "/usr")
-#endif
-                ) {
-                        n_failed++;
-                        continue;
-                }
-
-                /* Trying to umount. Forcing to umount if busy (only for NFS mounts) */
-                if (umount2(m->path, MNT_FORCE) == 0) {
-                        log_info("Unmounted %s.", m->path);
-                        if (changed)
-                                *changed = true;
-
-                        mount_point_free(head, m);
-                } else if (log_error) {
-                        log_warning("Could not unmount %s: %m", m->path);
-                        n_failed++;
-                }
-        }
-
-        return n_failed;
-}
-
-static int mount_points_list_remount_read_only(MountPoint **head, bool *changed) {
-        MountPoint *m, *n;
-        int n_failed = 0;
-
-        assert(head);
-
-        LIST_FOREACH_SAFE(mount_point, m, n, *head) {
-
-                if (m->skip_ro) {
-                        n_failed++;
-                        continue;
-                }
-
-                /* Trying to remount read-only */
-                if (mount(NULL, m->path, NULL, MS_MGC_VAL|MS_REMOUNT|MS_RDONLY, NULL) == 0) {
-                        if (changed)
-                                *changed = true;
-
-                        mount_point_free(head, m);
-                } else {
-                        log_warning("Could not remount as read-only %s: %m", m->path);
-                        n_failed++;
-                }
-        }
-
-        return n_failed;
-}
-
-static int swap_points_list_off(MountPoint **head, bool *changed) {
-        MountPoint *m, *n;
-        int n_failed = 0;
-
-        assert(head);
-
-        LIST_FOREACH_SAFE(mount_point, m, n, *head) {
-                if (swapoff(m->path) == 0) {
-                        if (changed)
-                                *changed = true;
-
-                        mount_point_free(head, m);
-                } else {
-                        log_warning("Could not deactivate swap %s: %m", m->path);
-                        n_failed++;
-                }
-        }
-
-        return n_failed;
-}
-
-static int loopback_points_list_detach(MountPoint **head, bool *changed) {
-        MountPoint *m, *n;
-        int n_failed = 0, k;
-        struct stat root_st;
-
-        assert(head);
-
-        k = lstat("/", &root_st);
-
-        LIST_FOREACH_SAFE(mount_point, m, n, *head) {
-                int r;
-                struct stat loopback_st;
-
-                if (k >= 0 &&
-                    major(root_st.st_dev) != 0 &&
-                    lstat(m->path, &loopback_st) >= 0 &&
-                    root_st.st_dev == loopback_st.st_rdev) {
-                        n_failed ++;
-                        continue;
-                }
-
-                if ((r = delete_loopback(m->path)) >= 0) {
-
-                        if (r > 0 && changed)
-                                *changed = true;
-
-                        mount_point_free(head, m);
-                } else {
-                        log_warning("Could not delete loopback %s: %m", m->path);
-                        n_failed++;
-                }
-        }
-
-        return n_failed;
-}
-
-static int dm_points_list_detach(MountPoint **head, bool *changed) {
-        MountPoint *m, *n;
-        int n_failed = 0, k;
-        struct stat root_st;
-
-        assert(head);
-
-        k = lstat("/", &root_st);
-
-        LIST_FOREACH_SAFE(mount_point, m, n, *head) {
-                int r;
-
-                if (k >= 0 &&
-                    major(root_st.st_dev) != 0 &&
-                    root_st.st_dev == m->devnum) {
-                        n_failed ++;
-                        continue;
-                }
-
-                if ((r = delete_dm(m->devnum)) >= 0) {
-
-                        if (r > 0 && changed)
-                                *changed = true;
-
-                        mount_point_free(head, m);
-                } else {
-                        log_warning("Could not delete dm %s: %m", m->path);
-                        n_failed++;
-                }
-        }
-
-        return n_failed;
-}
-
-int umount_all(bool *changed) {
-        int r;
-        bool umount_changed;
-
-        LIST_HEAD(MountPoint, mp_list_head);
-
-        LIST_HEAD_INIT(MountPoint, mp_list_head);
-
-        r = mount_points_list_get(&mp_list_head);
-        if (r < 0)
-                goto end;
-
-        /* retry umount, until nothing can be umounted anymore */
-        do {
-                umount_changed = false;
-
-                mount_points_list_umount(&mp_list_head, &umount_changed, false);
-                if (umount_changed)
-                        *changed = true;
-
-        } while (umount_changed);
-
-        /* umount one more time with logging enabled */
-        r = mount_points_list_umount(&mp_list_head, &umount_changed, true);
-        if (r <= 0)
-                goto end;
-
-        r = mount_points_list_remount_read_only(&mp_list_head, changed);
-
-  end:
-        mount_points_list_free(&mp_list_head);
-
-        return r;
-}
-
-int swapoff_all(bool *changed) {
-        int r;
-        LIST_HEAD(MountPoint, swap_list_head);
-
-        LIST_HEAD_INIT(MountPoint, swap_list_head);
-
-        r = swap_list_get(&swap_list_head);
-        if (r < 0)
-                goto end;
-
-        r = swap_points_list_off(&swap_list_head, changed);
-
-  end:
-        mount_points_list_free(&swap_list_head);
-
-        return r;
-}
-
-int loopback_detach_all(bool *changed) {
-        int r;
-        LIST_HEAD(MountPoint, loopback_list_head);
-
-        LIST_HEAD_INIT(MountPoint, loopback_list_head);
-
-        r = loopback_list_get(&loopback_list_head);
-        if (r < 0)
-                goto end;
-
-        r = loopback_points_list_detach(&loopback_list_head, changed);
-
-  end:
-        mount_points_list_free(&loopback_list_head);
-
-        return r;
-}
-
-int dm_detach_all(bool *changed) {
-        int r;
-        LIST_HEAD(MountPoint, dm_list_head);
-
-        LIST_HEAD_INIT(MountPoint, dm_list_head);
-
-        r = dm_list_get(&dm_list_head);
-        if (r < 0)
-                goto end;
-
-        r = dm_points_list_detach(&dm_list_head, changed);
-
-  end:
-        mount_points_list_free(&dm_list_head);
-
-        return r;
-}