diff options
author | Lennart Poettering <lennart@poettering.net> | 2012-04-12 13:33:02 +0200 |
---|---|---|
committer | Lennart Poettering <lennart@poettering.net> | 2012-04-12 13:35:56 +0200 |
commit | 643a14a5271ed19ec30a9882d4b9e9ae1c357fb1 (patch) | |
tree | 3a19eea0697e7f8352e7dc52850eeb3749c172b2 /src/shared | |
parent | fff7b732b2f4f553e5b837f9607d0cb2face315f (diff) |
build-sys: move a few things into more appropriate places
Diffstat (limited to 'src/shared')
-rw-r--r-- | src/shared/ask-password-api.h (renamed from src/shared/umount.h) | 14 | ||||
-rw-r--r-- | src/shared/umount.c | 644 |
2 files changed, 7 insertions, 651 deletions
diff --git a/src/shared/umount.h b/src/shared/ask-password-api.h index 2e2f9c181a..155afad33b 100644 --- a/src/shared/umount.h +++ b/src/shared/ask-password-api.h @@ -1,12 +1,12 @@ /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ -#ifndef fooumounthfoo -#define fooumounthfoo +#ifndef fooaskpasswordapihfoo +#define fooaskpasswordapihfoo /*** This file is part of systemd. - Copyright 2010 ProFUSION embedded systems + Copyright 2010 Lennart Poettering 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 @@ -22,12 +22,12 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ -int umount_all(bool *changed); +#include "util.h" -int swapoff_all(bool *changed); +int ask_password_tty(const char *message, usec_t until, const char *flag_file, char **_passphrase); -int loopback_detach_all(bool *changed); +int ask_password_agent(const char *message, const char *icon, usec_t until, bool accept_cached, char ***_passphrases); -int dm_detach_all(bool *changed); +int ask_password_auto(const char *message, const char *icon, usec_t until, bool accept_cached, char ***_passphrases); #endif 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; -} |