diff options
| author | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-08-17 01:33:02 -0400 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-08-17 01:33:02 -0400 |
| commit | 610d801297fe7e46c319e6da4e6571aaded630dd (patch) | |
| tree | d27f6d077694b84ed9881c99b2894701932ca6e1 /src/grp-initprogs/systemd-tmpfiles | |
| parent | 7648bff2717c24e9f5c90ec9e4588eda510aba9d (diff) | |
more
Diffstat (limited to 'src/grp-initprogs/systemd-tmpfiles')
14 files changed, 2630 insertions, 0 deletions
diff --git a/src/grp-initprogs/systemd-tmpfiles/Makefile b/src/grp-initprogs/systemd-tmpfiles/Makefile new file mode 100644 index 0000000000..de085fa334 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/Makefile @@ -0,0 +1,80 @@ +# -*- Mode: makefile; indent-tabs-mode: t -*- +# +# This file is part of systemd. +# +# Copyright 2010-2012 Lennart Poettering +# Copyright 2010-2012 Kay Sievers +# Copyright 2013 Zbigniew Jędrzejewski-Szmek +# Copyright 2013 David Strauss +# Copyright 2016 Luke Shumaker +# +# 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 $(dir $(lastword $(MAKEFILE_LIST)))/../../../config.mk +include $(topsrcdir)/build-aux/Makefile.head.mk + +ifneq ($(ENABLE_TMPFILES),) +systemd_tmpfiles_SOURCES = \ + src/tmpfiles/tmpfiles.c + +systemd_tmpfiles_LDADD = \ + libshared.la + +rootbin_PROGRAMS += \ + systemd-tmpfiles + +dist_systemunit_DATA += \ + units/systemd-tmpfiles-clean.timer + +nodist_systemunit_DATA += \ + units/systemd-tmpfiles-setup-dev.service \ + units/systemd-tmpfiles-setup.service \ + units/systemd-tmpfiles-clean.service + +nodist_tmpfiles_DATA = \ + tmpfiles.d/etc.conf + +dist_tmpfiles_DATA = \ + tmpfiles.d/systemd-nologin.conf \ + tmpfiles.d/tmp.conf \ + tmpfiles.d/x11.conf \ + tmpfiles.d/var.conf \ + tmpfiles.d/home.conf + +ifneq ($(HAVE_SYSV_COMPAT),) +dist_tmpfiles_DATA += \ + tmpfiles.d/legacy.conf +endif # HAVE_SYSV_COMPAT + +SYSINIT_TARGET_WANTS += \ + systemd-tmpfiles-setup-dev.service \ + systemd-tmpfiles-setup.service + +dist_zshcompletion_data += \ + shell-completion/zsh/_systemd-tmpfiles + +TIMERS_TARGET_WANTS += \ + systemd-tmpfiles-clean.timer + +INSTALL_DIRS += \ + $(tmpfilesdir) \ + $(sysconfdir)/tmpfiles.d +endif # ENABLE_TMPFILES + +EXTRA_DIST += \ + tmpfiles.d/etc.tmpfiles.m4 \ + units/systemd-tmpfiles-setup-dev.service.in \ + units/systemd-tmpfiles-setup.service.in \ + units/systemd-tmpfiles-clean.service.in + +include $(topsrcdir)/build-aux/Makefile.tail.mk diff --git a/src/grp-initprogs/systemd-tmpfiles/etc.tmpfiles.m4 b/src/grp-initprogs/systemd-tmpfiles/etc.tmpfiles.m4 new file mode 100644 index 0000000000..928105ea8d --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/etc.tmpfiles.m4 @@ -0,0 +1,19 @@ +# This file is part of systemd. +# +# 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. + +# See tmpfiles.d(5) for details + +L /etc/os-release - - - - ../usr/lib/os-release +L /etc/localtime - - - - ../usr/share/zoneinfo/UTC +L+ /etc/mtab - - - - ../proc/self/mounts +m4_ifdef(`HAVE_SMACK_RUN_LABEL', +t /etc/mtab - - - - security.SMACK64=_ +)m4_dnl +C /etc/nsswitch.conf - - - - +m4_ifdef(`HAVE_PAM', +C /etc/pam.d - - - - +)m4_dnl diff --git a/src/grp-initprogs/systemd-tmpfiles/home.tmpfiles b/src/grp-initprogs/systemd-tmpfiles/home.tmpfiles new file mode 100644 index 0000000000..9f25b83392 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/home.tmpfiles @@ -0,0 +1,11 @@ +# This file is part of systemd. +# +# 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. + +# See tmpfiles.d(5) for details + +Q /home 0755 - - - +q /srv 0755 - - - diff --git a/src/grp-initprogs/systemd-tmpfiles/legacy.tmpfiles b/src/grp-initprogs/systemd-tmpfiles/legacy.tmpfiles new file mode 100644 index 0000000000..62e2ae0986 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/legacy.tmpfiles @@ -0,0 +1,27 @@ +# This file is part of systemd. +# +# 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. + +# See tmpfiles.d(5) for details + +# These files are considered legacy and are unnecessary on legacy-free +# systems. + +d /run/lock 0755 root root - +L /var/lock - - - - ../run/lock + +# /run/lock/subsys is used for serializing SysV service execution, and +# hence without use on SysV-less systems. + +d /run/lock/subsys 0755 root root - + +# /forcefsck, /fastboot and /forcequotacheck are deprecated in favor of the +# kernel command line options 'fsck.mode=force', 'fsck.mode=skip' and +# 'quotacheck.mode=force' + +r! /forcefsck +r! /fastboot +r! /forcequotacheck diff --git a/src/grp-initprogs/systemd-tmpfiles/systemd-nologin.tmpfiles b/src/grp-initprogs/systemd-tmpfiles/systemd-nologin.tmpfiles new file mode 100644 index 0000000000..a30a8da604 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/systemd-nologin.tmpfiles @@ -0,0 +1,11 @@ +# This file is part of systemd. +# +# 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. + +# See tmpfiles.d(5), systemd-user-session.service(5) and pam_nologin(8). +# This file has special suffix so it is not run by mistake. + +F! /run/nologin 0644 - - - "System is booting up. See pam_nologin(8)" diff --git a/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-clean.service.in b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-clean.service.in new file mode 100644 index 0000000000..133c8c94c4 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-clean.service.in @@ -0,0 +1,19 @@ +# This file is part of systemd. +# +# 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. + +[Unit] +Description=Cleanup of Temporary Directories +Documentation=man:tmpfiles.d(5) man:systemd-tmpfiles(8) +DefaultDependencies=no +Conflicts=shutdown.target +After=local-fs.target time-sync.target +Before=shutdown.target + +[Service] +Type=oneshot +ExecStart=@rootbindir@/systemd-tmpfiles --clean +IOSchedulingClass=idle diff --git a/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-clean.timer b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-clean.timer new file mode 100644 index 0000000000..9975dcfaca --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-clean.timer @@ -0,0 +1,14 @@ +# This file is part of systemd. +# +# 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. + +[Unit] +Description=Daily Cleanup of Temporary Directories +Documentation=man:tmpfiles.d(5) man:systemd-tmpfiles(8) + +[Timer] +OnBootSec=15min +OnUnitActiveSec=1d diff --git a/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-setup-dev.service.in b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-setup-dev.service.in new file mode 100644 index 0000000000..0123a030e4 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-setup-dev.service.in @@ -0,0 +1,20 @@ +# This file is part of systemd. +# +# 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. + +[Unit] +Description=Create Static Device Nodes in /dev +Documentation=man:tmpfiles.d(5) man:systemd-tmpfiles(8) +DefaultDependencies=no +Conflicts=shutdown.target +After=systemd-sysusers.service +Before=sysinit.target local-fs-pre.target systemd-udevd.service shutdown.target +ConditionCapability=CAP_SYS_MODULE + +[Service] +Type=oneshot +RemainAfterExit=yes +ExecStart=@rootbindir@/systemd-tmpfiles --prefix=/dev --create --boot diff --git a/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-setup.service.in b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-setup.service.in new file mode 100644 index 0000000000..e895cda0e6 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles-setup.service.in @@ -0,0 +1,20 @@ +# This file is part of systemd. +# +# 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. + +[Unit] +Description=Create Volatile Files and Directories +Documentation=man:tmpfiles.d(5) man:systemd-tmpfiles(8) +DefaultDependencies=no +Conflicts=shutdown.target +After=local-fs.target systemd-sysusers.service +Before=sysinit.target shutdown.target +RefuseManualStop=yes + +[Service] +Type=oneshot +RemainAfterExit=yes +ExecStart=@rootbindir@/systemd-tmpfiles --create --remove --boot --exclude-prefix=/dev diff --git a/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles.completion.zsh b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles.completion.zsh new file mode 100644 index 0000000000..6ff02e5d98 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/systemd-tmpfiles.completion.zsh @@ -0,0 +1,13 @@ +#compdef systemd-tmpfiles + +_arguments \ + {-h,--help}'[Show help]' \ + '--version[Show package version]' \ + '--create[Create, set ownership/permissions based on the config files.]' \ + '--clean[Clean up all files and directories with an age parameter configured.]' \ + '--remove[All files and directories marked with r, R in the configuration files are removed.]' \ + '--boot[Execute actions only safe at boot]' \ + '--prefix=[Only apply rules that apply to paths with the specified prefix.]' \ + '--exclude-prefix=[Ignore rules that apply to paths with the specified prefix.]' \ + '--root=[Operate on an alternate filesystem root]:directory:_directories' \ + '*::files:_files' diff --git a/src/grp-initprogs/systemd-tmpfiles/tmp.tmpfiles b/src/grp-initprogs/systemd-tmpfiles/tmp.tmpfiles new file mode 100644 index 0000000000..fe5225d751 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/tmp.tmpfiles @@ -0,0 +1,12 @@ +# This file is part of systemd. +# +# 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. + +# See tmpfiles.d(5) for details + +# Clear tmp directories separately, to make them easier to override +q /tmp 1777 root root 10d +q /var/tmp 1777 root root 30d diff --git a/src/grp-initprogs/systemd-tmpfiles/tmpfiles.c b/src/grp-initprogs/systemd-tmpfiles/tmpfiles.c new file mode 100644 index 0000000000..f865b9cc3e --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/tmpfiles.c @@ -0,0 +1,2344 @@ +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering, Kay Sievers + Copyright 2015 Zbigniew Jędrzejewski-Szmek + + 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 <dirent.h> +#include <errno.h> +#include <fcntl.h> +#include <fnmatch.h> +#include <getopt.h> +#include <glob.h> +#include <limits.h> +#include <stdbool.h> +#include <stddef.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/stat.h> +#include <sys/xattr.h> +#include <time.h> +#include <unistd.h> + +#include <linux/fs.h> + +#include "basic/alloc-util.h" +#include "basic/btrfs-util.h" +#include "basic/capability-util.h" +#include "basic/chattr-util.h" +#include "basic/conf-files.h" +#include "basic/copy.h" +#include "basic/def.h" +#include "basic/escape.h" +#include "basic/fd-util.h" +#include "basic/fileio.h" +#include "basic/formats-util.h" +#include "basic/fs-util.h" +#include "basic/glob-util.h" +#include "basic/io-util.h" +#include "basic/label.h" +#include "basic/log.h" +#include "basic/macro.h" +#include "basic/missing.h" +#include "basic/mkdir.h" +#include "basic/mount-util.h" +#include "basic/parse-util.h" +#include "basic/path-util.h" +#include "basic/rm-rf.h" +#include "basic/selinux-util.h" +#include "basic/set.h" +#include "basic/stat-util.h" +#include "basic/stdio-util.h" +#include "basic/string-table.h" +#include "basic/string-util.h" +#include "basic/strv.h" +#include "basic/umask-util.h" +#include "basic/user-util.h" +#include "basic/util.h" +#include "shared/acl-util.h" +#include "shared/specifier.h" + +/* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates + * them in the file system. This is intended to be used to create + * properly owned directories beneath /tmp, /var/tmp, /run, which are + * volatile and hence need to be recreated on bootup. */ + +typedef enum ItemType { + /* These ones take file names */ + CREATE_FILE = 'f', + TRUNCATE_FILE = 'F', + CREATE_DIRECTORY = 'd', + TRUNCATE_DIRECTORY = 'D', + CREATE_SUBVOLUME = 'v', + CREATE_SUBVOLUME_INHERIT_QUOTA = 'q', + CREATE_SUBVOLUME_NEW_QUOTA = 'Q', + CREATE_FIFO = 'p', + CREATE_SYMLINK = 'L', + CREATE_CHAR_DEVICE = 'c', + CREATE_BLOCK_DEVICE = 'b', + COPY_FILES = 'C', + + /* These ones take globs */ + WRITE_FILE = 'w', + EMPTY_DIRECTORY = 'e', + SET_XATTR = 't', + RECURSIVE_SET_XATTR = 'T', + SET_ACL = 'a', + RECURSIVE_SET_ACL = 'A', + SET_ATTRIBUTE = 'h', + RECURSIVE_SET_ATTRIBUTE = 'H', + IGNORE_PATH = 'x', + IGNORE_DIRECTORY_PATH = 'X', + REMOVE_PATH = 'r', + RECURSIVE_REMOVE_PATH = 'R', + RELABEL_PATH = 'z', + RECURSIVE_RELABEL_PATH = 'Z', + ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ +} ItemType; + +typedef struct Item { + ItemType type; + + char *path; + char *argument; + char **xattrs; +#ifdef HAVE_ACL + acl_t acl_access; + acl_t acl_default; +#endif + uid_t uid; + gid_t gid; + mode_t mode; + usec_t age; + + dev_t major_minor; + unsigned attribute_value; + unsigned attribute_mask; + + bool uid_set:1; + bool gid_set:1; + bool mode_set:1; + bool age_set:1; + bool mask_perms:1; + bool attribute_set:1; + + bool keep_first_level:1; + + bool force:1; + + bool done:1; +} Item; + +typedef struct ItemArray { + Item *items; + size_t count; + size_t size; +} ItemArray; + +static bool arg_create = false; +static bool arg_clean = false; +static bool arg_remove = false; +static bool arg_boot = false; + +static char **arg_include_prefixes = NULL; +static char **arg_exclude_prefixes = NULL; +static char *arg_root = NULL; + +static const char conf_file_dirs[] = CONF_PATHS_NULSTR("tmpfiles.d"); + +#define MAX_DEPTH 256 + +static OrderedHashmap *items = NULL, *globs = NULL; +static Set *unix_sockets = NULL; + +static const Specifier specifier_table[] = { + { 'm', specifier_machine_id, NULL }, + { 'b', specifier_boot_id, NULL }, + { 'H', specifier_host_name, NULL }, + { 'v', specifier_kernel_release, NULL }, + {} +}; + +static bool needs_glob(ItemType t) { + return IN_SET(t, + WRITE_FILE, + IGNORE_PATH, + IGNORE_DIRECTORY_PATH, + REMOVE_PATH, + RECURSIVE_REMOVE_PATH, + EMPTY_DIRECTORY, + ADJUST_MODE, + RELABEL_PATH, + RECURSIVE_RELABEL_PATH, + SET_XATTR, + RECURSIVE_SET_XATTR, + SET_ACL, + RECURSIVE_SET_ACL, + SET_ATTRIBUTE, + RECURSIVE_SET_ATTRIBUTE); +} + +static bool takes_ownership(ItemType t) { + return IN_SET(t, + CREATE_FILE, + TRUNCATE_FILE, + CREATE_DIRECTORY, + EMPTY_DIRECTORY, + TRUNCATE_DIRECTORY, + CREATE_SUBVOLUME, + CREATE_SUBVOLUME_INHERIT_QUOTA, + CREATE_SUBVOLUME_NEW_QUOTA, + CREATE_FIFO, + CREATE_SYMLINK, + CREATE_CHAR_DEVICE, + CREATE_BLOCK_DEVICE, + COPY_FILES, + WRITE_FILE, + IGNORE_PATH, + IGNORE_DIRECTORY_PATH, + REMOVE_PATH, + RECURSIVE_REMOVE_PATH); +} + +static struct Item* find_glob(OrderedHashmap *h, const char *match) { + ItemArray *j; + Iterator i; + + ORDERED_HASHMAP_FOREACH(j, h, i) { + unsigned n; + + for (n = 0; n < j->count; n++) { + Item *item = j->items + n; + + if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) + return item; + } + } + + return NULL; +} + +static void load_unix_sockets(void) { + _cleanup_fclose_ FILE *f = NULL; + char line[LINE_MAX]; + + if (unix_sockets) + return; + + /* We maintain a cache of the sockets we found in + * /proc/net/unix to speed things up a little. */ + + unix_sockets = set_new(&string_hash_ops); + if (!unix_sockets) + return; + + f = fopen("/proc/net/unix", "re"); + if (!f) + return; + + /* Skip header */ + if (!fgets(line, sizeof(line), f)) + goto fail; + + for (;;) { + char *p, *s; + int k; + + if (!fgets(line, sizeof(line), f)) + break; + + truncate_nl(line); + + p = strchr(line, ':'); + if (!p) + continue; + + if (strlen(p) < 37) + continue; + + p += 37; + p += strspn(p, WHITESPACE); + p += strcspn(p, WHITESPACE); /* skip one more word */ + p += strspn(p, WHITESPACE); + + if (*p != '/') + continue; + + s = strdup(p); + if (!s) + goto fail; + + path_kill_slashes(s); + + k = set_consume(unix_sockets, s); + if (k < 0 && k != -EEXIST) + goto fail; + } + + return; + +fail: + set_free_free(unix_sockets); + unix_sockets = NULL; +} + +static bool unix_socket_alive(const char *fn) { + assert(fn); + + load_unix_sockets(); + + if (unix_sockets) + return !!set_get(unix_sockets, (char*) fn); + + /* We don't know, so assume yes */ + return true; +} + +static int dir_is_mount_point(DIR *d, const char *subdir) { + + union file_handle_union h = FILE_HANDLE_INIT; + int mount_id_parent, mount_id; + int r_p, r; + + r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0); + if (r_p < 0) + r_p = -errno; + + h.handle.handle_bytes = MAX_HANDLE_SZ; + r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0); + if (r < 0) + r = -errno; + + /* got no handle; make no assumptions, return error */ + if (r_p < 0 && r < 0) + return r_p; + + /* got both handles; if they differ, it is a mount point */ + if (r_p >= 0 && r >= 0) + return mount_id_parent != mount_id; + + /* got only one handle; assume different mount points if one + * of both queries was not supported by the filesystem */ + if (r_p == -ENOSYS || r_p == -EOPNOTSUPP || r == -ENOSYS || r == -EOPNOTSUPP) + return true; + + /* return error */ + if (r_p < 0) + return r_p; + return r; +} + +static DIR* xopendirat_nomod(int dirfd, const char *path) { + DIR *dir; + + dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); + if (dir) + return dir; + + log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); + if (errno != EPERM) + return NULL; + + dir = xopendirat(dirfd, path, O_NOFOLLOW); + if (!dir) + log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); + + return dir; +} + +static DIR* opendir_nomod(const char *path) { + return xopendirat_nomod(AT_FDCWD, path); +} + +static int dir_cleanup( + Item *i, + const char *p, + DIR *d, + const struct stat *ds, + usec_t cutoff, + dev_t rootdev, + bool mountpoint, + int maxdepth, + bool keep_this_level) { + + struct dirent *dent; + struct timespec times[2]; + bool deleted = false; + int r = 0; + + while ((dent = readdir(d))) { + struct stat s; + usec_t age; + _cleanup_free_ char *sub_path = NULL; + + if (STR_IN_SET(dent->d_name, ".", "..")) + continue; + + if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { + if (errno == ENOENT) + continue; + + /* FUSE, NFS mounts, SELinux might return EACCES */ + if (errno == EACCES) + log_debug_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name); + else + log_error_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name); + r = -errno; + continue; + } + + /* Stay on the same filesystem */ + if (s.st_dev != rootdev) { + log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name); + continue; + } + + /* Try to detect bind mounts of the same filesystem instance; they + * do not differ in device major/minors. This type of query is not + * supported on all kernels or filesystem types though. */ + if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) { + log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", + p, dent->d_name); + continue; + } + + /* Do not delete read-only files owned by root */ + if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) { + log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p, dent->d_name); + continue; + } + + sub_path = strjoin(p, "/", dent->d_name, NULL); + if (!sub_path) { + r = log_oom(); + goto finish; + } + + /* Is there an item configured for this path? */ + if (ordered_hashmap_get(items, sub_path)) { + log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); + continue; + } + + if (find_glob(globs, sub_path)) { + log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); + continue; + } + + if (S_ISDIR(s.st_mode)) { + + if (mountpoint && + streq(dent->d_name, "lost+found") && + s.st_uid == 0) { + log_debug("Ignoring \"%s\".", sub_path); + continue; + } + + if (maxdepth <= 0) + log_warning("Reached max depth on \"%s\".", sub_path); + else { + _cleanup_closedir_ DIR *sub_dir; + int q; + + sub_dir = xopendirat_nomod(dirfd(d), dent->d_name); + if (!sub_dir) { + if (errno != ENOENT) + r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path); + + continue; + } + + q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false); + if (q < 0) + r = q; + } + + /* Note: if you are wondering why we don't + * support the sticky bit for excluding + * directories from cleaning like we do it for + * other file system objects: well, the sticky + * bit already has a meaning for directories, + * so we don't want to overload that. */ + + if (keep_this_level) { + log_debug("Keeping \"%s\".", sub_path); + continue; + } + + /* Ignore ctime, we change it when deleting */ + age = timespec_load(&s.st_mtim); + if (age >= cutoff) { + char a[FORMAT_TIMESTAMP_MAX]; + /* Follows spelling in stat(1). */ + log_debug("Directory \"%s\": modify time %s is too new.", + sub_path, + format_timestamp_us(a, sizeof(a), age)); + continue; + } + + age = timespec_load(&s.st_atim); + if (age >= cutoff) { + char a[FORMAT_TIMESTAMP_MAX]; + log_debug("Directory \"%s\": access time %s is too new.", + sub_path, + format_timestamp_us(a, sizeof(a), age)); + continue; + } + + log_debug("Removing directory \"%s\".", sub_path); + if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) + if (errno != ENOENT && errno != ENOTEMPTY) { + log_error_errno(errno, "rmdir(%s): %m", sub_path); + r = -errno; + } + + } else { + /* Skip files for which the sticky bit is + * set. These are semantics we define, and are + * unknown elsewhere. See XDG_RUNTIME_DIR + * specification for details. */ + if (s.st_mode & S_ISVTX) { + log_debug("Skipping \"%s\": sticky bit set.", sub_path); + continue; + } + + if (mountpoint && S_ISREG(s.st_mode)) + if (s.st_uid == 0 && STR_IN_SET(dent->d_name, + ".journal", + "aquota.user", + "aquota.group")) { + log_debug("Skipping \"%s\".", sub_path); + continue; + } + + /* Ignore sockets that are listed in /proc/net/unix */ + if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) { + log_debug("Skipping \"%s\": live socket.", sub_path); + continue; + } + + /* Ignore device nodes */ + if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) { + log_debug("Skipping \"%s\": a device.", sub_path); + continue; + } + + /* Keep files on this level around if this is + * requested */ + if (keep_this_level) { + log_debug("Keeping \"%s\".", sub_path); + continue; + } + + age = timespec_load(&s.st_mtim); + if (age >= cutoff) { + char a[FORMAT_TIMESTAMP_MAX]; + /* Follows spelling in stat(1). */ + log_debug("File \"%s\": modify time %s is too new.", + sub_path, + format_timestamp_us(a, sizeof(a), age)); + continue; + } + + age = timespec_load(&s.st_atim); + if (age >= cutoff) { + char a[FORMAT_TIMESTAMP_MAX]; + log_debug("File \"%s\": access time %s is too new.", + sub_path, + format_timestamp_us(a, sizeof(a), age)); + continue; + } + + age = timespec_load(&s.st_ctim); + if (age >= cutoff) { + char a[FORMAT_TIMESTAMP_MAX]; + log_debug("File \"%s\": change time %s is too new.", + sub_path, + format_timestamp_us(a, sizeof(a), age)); + continue; + } + + log_debug("unlink \"%s\"", sub_path); + + if (unlinkat(dirfd(d), dent->d_name, 0) < 0) + if (errno != ENOENT) + r = log_error_errno(errno, "unlink(%s): %m", sub_path); + + deleted = true; + } + } + +finish: + if (deleted) { + usec_t age1, age2; + char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX]; + + /* Restore original directory timestamps */ + times[0] = ds->st_atim; + times[1] = ds->st_mtim; + + age1 = timespec_load(&ds->st_atim); + age2 = timespec_load(&ds->st_mtim); + log_debug("Restoring access and modification time on \"%s\": %s, %s", + p, + format_timestamp_us(a, sizeof(a), age1), + format_timestamp_us(b, sizeof(b), age2)); + if (futimens(dirfd(d), times) < 0) + log_error_errno(errno, "utimensat(%s): %m", p); + } + + return r; +} + +static int path_set_perms(Item *i, const char *path) { + _cleanup_close_ int fd = -1; + struct stat st; + + assert(i); + assert(path); + + /* We open the file with O_PATH here, to make the operation + * somewhat atomic. Also there's unfortunately no fchmodat() + * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via + * O_PATH. */ + + fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH); + if (fd < 0) + return log_error_errno(errno, "Adjusting owner and mode for %s failed: %m", path); + + if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0) + return log_error_errno(errno, "Failed to fstat() file %s: %m", path); + + if (S_ISLNK(st.st_mode)) + log_debug("Skipping mode an owner fix for symlink %s.", path); + else { + char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; + xsprintf(fn, "/proc/self/fd/%i", fd); + + /* not using i->path directly because it may be a glob */ + if (i->mode_set) { + mode_t m = i->mode; + + if (i->mask_perms) { + if (!(st.st_mode & 0111)) + m &= ~0111; + if (!(st.st_mode & 0222)) + m &= ~0222; + if (!(st.st_mode & 0444)) + m &= ~0444; + if (!S_ISDIR(st.st_mode)) + m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ + } + + if (m == (st.st_mode & 07777)) + log_debug("\"%s\" has right mode %o", path, st.st_mode); + else { + log_debug("chmod \"%s\" to mode %o", path, m); + if (chmod(fn, m) < 0) + return log_error_errno(errno, "chmod(%s) failed: %m", path); + } + } + + if ((i->uid != st.st_uid || i->gid != st.st_gid) && + (i->uid_set || i->gid_set)) { + log_debug("chown \"%s\" to "UID_FMT"."GID_FMT, + path, + i->uid_set ? i->uid : UID_INVALID, + i->gid_set ? i->gid : GID_INVALID); + if (chown(fn, + i->uid_set ? i->uid : UID_INVALID, + i->gid_set ? i->gid : GID_INVALID) < 0) + return log_error_errno(errno, "chown(%s) failed: %m", path); + } + } + + fd = safe_close(fd); + + return label_fix(path, false, false); +} + +static int parse_xattrs_from_arg(Item *i) { + const char *p; + int r; + + assert(i); + assert(i->argument); + + p = i->argument; + + for (;;) { + _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL, *xattr_replaced = NULL; + + r = extract_first_word(&p, &xattr, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE); + if (r < 0) + log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p); + if (r <= 0) + break; + + r = specifier_printf(xattr, specifier_table, NULL, &xattr_replaced); + if (r < 0) + return log_error_errno(r, "Failed to replace specifiers in extended attribute '%s': %m", xattr); + + r = split_pair(xattr_replaced, "=", &name, &value); + if (r < 0) { + log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); + continue; + } + + if (isempty(name) || isempty(value)) { + log_warning("Malformed extended attribute found, ignoring: %s", xattr); + continue; + } + + if (strv_push_pair(&i->xattrs, name, value) < 0) + return log_oom(); + + name = value = NULL; + } + + return 0; +} + +static int path_set_xattrs(Item *i, const char *path) { + char **name, **value; + + assert(i); + assert(path); + + STRV_FOREACH_PAIR(name, value, i->xattrs) { + int n; + + n = strlen(*value); + log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path); + if (lsetxattr(path, *name, *value, n, 0) < 0) { + log_error("Setting extended attribute %s=%s on %s failed: %m", *name, *value, path); + return -errno; + } + } + return 0; +} + +static int parse_acls_from_arg(Item *item) { +#ifdef HAVE_ACL + int r; + + assert(item); + + /* If force (= modify) is set, we will not modify the acl + * afterwards, so the mask can be added now if necessary. */ + + r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force); + if (r < 0) + log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument); +#else + log_warning_errno(ENOSYS, "ACLs are not supported. Ignoring"); +#endif + + return 0; +} + +#ifdef HAVE_ACL +static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) { + _cleanup_(acl_free_charpp) char *t = NULL; + _cleanup_(acl_freep) acl_t dup = NULL; + int r; + + /* Returns 0 for success, positive error if already warned, + * negative error otherwise. */ + + if (modify) { + r = acls_for_file(path, type, acl, &dup); + if (r < 0) + return r; + + r = calc_acl_mask_if_needed(&dup); + if (r < 0) + return r; + } else { + dup = acl_dup(acl); + if (!dup) + return -errno; + + /* the mask was already added earlier if needed */ + } + + r = add_base_acls_if_needed(&dup, path); + if (r < 0) + return r; + + t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); + log_debug("Setting %s ACL %s on %s.", + type == ACL_TYPE_ACCESS ? "access" : "default", + strna(t), pretty); + + r = acl_set_file(path, type, dup); + if (r < 0) + /* Return positive to indicate we already warned */ + return -log_error_errno(errno, + "Setting %s ACL \"%s\" on %s failed: %m", + type == ACL_TYPE_ACCESS ? "access" : "default", + strna(t), pretty); + + return 0; +} +#endif + +static int path_set_acls(Item *item, const char *path) { + int r = 0; +#ifdef HAVE_ACL + char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)]; + _cleanup_close_ int fd = -1; + struct stat st; + + assert(item); + assert(path); + + fd = open(path, O_NOFOLLOW|O_CLOEXEC|O_PATH); + if (fd < 0) + return log_error_errno(errno, "Adjusting ACL of %s failed: %m", path); + + if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0) + return log_error_errno(errno, "Failed to fstat() file %s: %m", path); + + if (S_ISLNK(st.st_mode)) { + log_debug("Skipping ACL fix for symlink %s.", path); + return 0; + } + + xsprintf(fn, "/proc/self/fd/%i", fd); + + if (item->acl_access) + r = path_set_acl(fn, path, ACL_TYPE_ACCESS, item->acl_access, item->force); + + if (r == 0 && item->acl_default) + r = path_set_acl(fn, path, ACL_TYPE_DEFAULT, item->acl_default, item->force); + + if (r > 0) + return -r; /* already warned */ + else if (r == -EOPNOTSUPP) { + log_debug_errno(r, "ACLs not supported by file system at %s", path); + return 0; + } else if (r < 0) + log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); +#endif + return r; +} + +#define ATTRIBUTES_ALL \ + (FS_NOATIME_FL | \ + FS_SYNC_FL | \ + FS_DIRSYNC_FL | \ + FS_APPEND_FL | \ + FS_COMPR_FL | \ + FS_NODUMP_FL | \ + FS_EXTENT_FL | \ + FS_IMMUTABLE_FL | \ + FS_JOURNAL_DATA_FL | \ + FS_SECRM_FL | \ + FS_UNRM_FL | \ + FS_NOTAIL_FL | \ + FS_TOPDIR_FL | \ + FS_NOCOW_FL) + +static int parse_attribute_from_arg(Item *item) { + + static const struct { + char character; + unsigned value; + } attributes[] = { + { 'A', FS_NOATIME_FL }, /* do not update atime */ + { 'S', FS_SYNC_FL }, /* Synchronous updates */ + { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */ + { 'a', FS_APPEND_FL }, /* writes to file may only append */ + { 'c', FS_COMPR_FL }, /* Compress file */ + { 'd', FS_NODUMP_FL }, /* do not dump file */ + { 'e', FS_EXTENT_FL }, /* Top of directory hierarchies*/ + { 'i', FS_IMMUTABLE_FL }, /* Immutable file */ + { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */ + { 's', FS_SECRM_FL }, /* Secure deletion */ + { 'u', FS_UNRM_FL }, /* Undelete */ + { 't', FS_NOTAIL_FL }, /* file tail should not be merged */ + { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies*/ + { 'C', FS_NOCOW_FL }, /* Do not cow file */ + }; + + enum { + MODE_ADD, + MODE_DEL, + MODE_SET + } mode = MODE_ADD; + + unsigned value = 0, mask = 0; + const char *p; + + assert(item); + + p = item->argument; + if (p) { + if (*p == '+') { + mode = MODE_ADD; + p++; + } else if (*p == '-') { + mode = MODE_DEL; + p++; + } else if (*p == '=') { + mode = MODE_SET; + p++; + } + } + + if (isempty(p) && mode != MODE_SET) { + log_error("Setting file attribute on '%s' needs an attribute specification.", item->path); + return -EINVAL; + } + + for (; p && *p ; p++) { + unsigned i, v; + + for (i = 0; i < ELEMENTSOF(attributes); i++) + if (*p == attributes[i].character) + break; + + if (i >= ELEMENTSOF(attributes)) { + log_error("Unknown file attribute '%c' on '%s'.", *p, item->path); + return -EINVAL; + } + + v = attributes[i].value; + + SET_FLAG(value, v, (mode == MODE_ADD || mode == MODE_SET)); + + mask |= v; + } + + if (mode == MODE_SET) + mask |= ATTRIBUTES_ALL; + + assert(mask != 0); + + item->attribute_mask = mask; + item->attribute_value = value; + item->attribute_set = true; + + return 0; +} + +static int path_set_attribute(Item *item, const char *path) { + _cleanup_close_ int fd = -1; + struct stat st; + unsigned f; + int r; + + if (!item->attribute_set || item->attribute_mask == 0) + return 0; + + fd = open(path, O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_NOATIME|O_NOFOLLOW); + if (fd < 0) { + if (errno == ELOOP) + return log_error_errno(errno, "Skipping file attributes adjustment on symlink %s.", path); + + return log_error_errno(errno, "Cannot open '%s': %m", path); + } + + if (fstat(fd, &st) < 0) + return log_error_errno(errno, "Cannot stat '%s': %m", path); + + /* Issuing the file attribute ioctls on device nodes is not + * safe, as that will be delivered to the drivers, not the + * file system containing the device node. */ + if (!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode)) { + log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path); + return -EINVAL; + } + + f = item->attribute_value & item->attribute_mask; + + /* Mask away directory-specific flags */ + if (!S_ISDIR(st.st_mode)) + f &= ~FS_DIRSYNC_FL; + + r = chattr_fd(fd, f, item->attribute_mask); + if (r < 0) + log_full_errno(r == -ENOTTY ? LOG_DEBUG : LOG_WARNING, + r, + "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m", + path, item->attribute_value, item->attribute_mask); + + return 0; +} + +static int write_one_file(Item *i, const char *path) { + _cleanup_close_ int fd = -1; + int flags, r = 0; + struct stat st; + + assert(i); + assert(path); + + flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND|O_NOFOLLOW : + i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0; + + RUN_WITH_UMASK(0000) { + mac_selinux_create_file_prepare(path, S_IFREG); + fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); + mac_selinux_create_file_clear(); + } + + if (fd < 0) { + if (i->type == WRITE_FILE && errno == ENOENT) { + log_debug_errno(errno, "Not writing \"%s\": %m", path); + return 0; + } + + r = -errno; + if (!i->argument && errno == EROFS && stat(path, &st) == 0 && + (i->type == CREATE_FILE || st.st_size == 0)) + goto check_mode; + + return log_error_errno(r, "Failed to create file %s: %m", path); + } + + if (i->argument) { + _cleanup_free_ char *unescaped = NULL, *replaced = NULL; + + log_debug("%s to \"%s\".", i->type == CREATE_FILE ? "Appending" : "Writing", path); + + r = cunescape(i->argument, 0, &unescaped); + if (r < 0) + return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument); + + r = specifier_printf(unescaped, specifier_table, NULL, &replaced); + if (r < 0) + return log_error_errno(r, "Failed to replace specifiers in parameter to write '%s': %m", unescaped); + + r = loop_write(fd, replaced, strlen(replaced), false); + if (r < 0) + return log_error_errno(r, "Failed to write file \"%s\": %m", path); + } else + log_debug("\"%s\" has been created.", path); + + fd = safe_close(fd); + + if (stat(path, &st) < 0) + return log_error_errno(errno, "stat(%s) failed: %m", path); + + check_mode: + if (!S_ISREG(st.st_mode)) { + log_error("%s is not a file.", path); + return -EEXIST; + } + + r = path_set_perms(i, path); + if (r < 0) + return r; + + return 0; +} + +typedef int (*action_t)(Item *, const char *); + +static int item_do_children(Item *i, const char *path, action_t action) { + _cleanup_closedir_ DIR *d; + int r = 0; + + assert(i); + assert(path); + + /* This returns the first error we run into, but nevertheless + * tries to go on */ + + d = opendir_nomod(path); + if (!d) + return errno == ENOENT || errno == ENOTDIR ? 0 : -errno; + + for (;;) { + _cleanup_free_ char *p = NULL; + struct dirent *de; + int q; + + errno = 0; + de = readdir(d); + if (!de) { + if (errno > 0 && r == 0) + r = -errno; + + break; + } + + if (STR_IN_SET(de->d_name, ".", "..")) + continue; + + p = strjoin(path, "/", de->d_name, NULL); + if (!p) + return -ENOMEM; + + q = action(i, p); + if (q < 0 && q != -ENOENT && r == 0) + r = q; + + if (IN_SET(de->d_type, DT_UNKNOWN, DT_DIR)) { + q = item_do_children(i, p, action); + if (q < 0 && r == 0) + r = q; + } + } + + return r; +} + +static int glob_item(Item *i, action_t action, bool recursive) { + _cleanup_globfree_ glob_t g = { + .gl_closedir = (void (*)(void *)) closedir, + .gl_readdir = (struct dirent *(*)(void *)) readdir, + .gl_opendir = (void *(*)(const char *)) opendir_nomod, + .gl_lstat = lstat, + .gl_stat = stat, + }; + int r = 0, k; + char **fn; + + errno = 0; + k = glob(i->path, GLOB_NOSORT|GLOB_BRACE|GLOB_ALTDIRFUNC, NULL, &g); + if (k != 0 && k != GLOB_NOMATCH) + return log_error_errno(errno ?: EIO, "glob(%s) failed: %m", i->path); + + STRV_FOREACH(fn, g.gl_pathv) { + k = action(i, *fn); + if (k < 0 && r == 0) + r = k; + + if (recursive) { + k = item_do_children(i, *fn, action); + if (k < 0 && r == 0) + r = k; + } + } + + return r; +} + +typedef enum { + CREATION_NORMAL, + CREATION_EXISTING, + CREATION_FORCE, + _CREATION_MODE_MAX, + _CREATION_MODE_INVALID = -1 +} CreationMode; + +static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = { + [CREATION_NORMAL] = "Created", + [CREATION_EXISTING] = "Found existing", + [CREATION_FORCE] = "Created replacement", +}; + +DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); + +static int create_item(Item *i) { + _cleanup_free_ char *resolved = NULL; + struct stat st; + int r = 0; + int q = 0; + CreationMode creation; + + assert(i); + + log_debug("Running create action for entry %c %s", (char) i->type, i->path); + + switch (i->type) { + + case IGNORE_PATH: + case IGNORE_DIRECTORY_PATH: + case REMOVE_PATH: + case RECURSIVE_REMOVE_PATH: + return 0; + + case CREATE_FILE: + case TRUNCATE_FILE: + r = write_one_file(i, i->path); + if (r < 0) + return r; + break; + + case COPY_FILES: { + r = specifier_printf(i->argument, specifier_table, NULL, &resolved); + if (r < 0) + return log_error_errno(r, "Failed to substitute specifiers in copy source %s: %m", i->argument); + + log_debug("Copying tree \"%s\" to \"%s\".", resolved, i->path); + r = copy_tree(resolved, i->path, false); + + if (r == -EROFS && stat(i->path, &st) == 0) + r = -EEXIST; + + if (r < 0) { + struct stat a, b; + + if (r != -EEXIST) + return log_error_errno(r, "Failed to copy files to %s: %m", i->path); + + if (stat(resolved, &a) < 0) + return log_error_errno(errno, "stat(%s) failed: %m", resolved); + + if (stat(i->path, &b) < 0) + return log_error_errno(errno, "stat(%s) failed: %m", i->path); + + if ((a.st_mode ^ b.st_mode) & S_IFMT) { + log_debug("Can't copy to %s, file exists already and is of different type", i->path); + return 0; + } + } + + r = path_set_perms(i, i->path); + if (r < 0) + return r; + + break; + + case WRITE_FILE: + r = glob_item(i, write_one_file, false); + if (r < 0) + return r; + + break; + + case CREATE_DIRECTORY: + case TRUNCATE_DIRECTORY: + case CREATE_SUBVOLUME: + case CREATE_SUBVOLUME_INHERIT_QUOTA: + case CREATE_SUBVOLUME_NEW_QUOTA: + RUN_WITH_UMASK(0000) + mkdir_parents_label(i->path, 0755); + + if (IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) { + + if (btrfs_is_subvol(isempty(arg_root) ? "/" : arg_root) <= 0) + + /* Don't create a subvolume unless the + * root directory is one, too. We do + * this under the assumption that if + * the root directory is just a plain + * directory (i.e. very light-weight), + * we shouldn't try to split it up + * into subvolumes (i.e. more + * heavy-weight). Thus, chroot() + * environments and suchlike will get + * a full brtfs subvolume set up below + * their tree only if they + * specifically set up a btrfs + * subvolume for the root dir too. */ + + r = -ENOTTY; + else { + RUN_WITH_UMASK((~i->mode) & 0777) + r = btrfs_subvol_make(i->path); + } + } else + r = 0; + + if (IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY) || r == -ENOTTY) + RUN_WITH_UMASK(0000) + r = mkdir_label(i->path, i->mode); + + if (r < 0) { + int k; + + if (r != -EEXIST && r != -EROFS) + return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path); + + k = is_dir(i->path, false); + if (k == -ENOENT && r == -EROFS) + return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", i->path); + if (k < 0) + return log_error_errno(k, "Failed to check if %s exists: %m", i->path); + if (!k) { + log_warning("\"%s\" already exists and is not a directory.", i->path); + return 0; + } + + creation = CREATION_EXISTING; + } else + creation = CREATION_NORMAL; + + log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), i->path); + + if (IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) { + r = btrfs_subvol_auto_qgroup(i->path, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA); + if (r == -ENOTTY) + log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (unsupported fs or dir not a subvolume): %m", i->path); + else if (r == -EROFS) + log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (fs is read-only).", i->path); + else if (r == -ENOPROTOOPT) + log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" (quota support is disabled).", i->path); + else if (r < 0) + q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path); + else if (r > 0) + log_debug("Adjusted quota for subvolume \"%s\".", i->path); + else if (r == 0) + log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path); + } + + /* fall through */ + + case EMPTY_DIRECTORY: + r = path_set_perms(i, i->path); + if (q < 0) + return q; + if (r < 0) + return r; + + break; + + case CREATE_FIFO: + RUN_WITH_UMASK(0000) { + mac_selinux_create_file_prepare(i->path, S_IFIFO); + r = mkfifo(i->path, i->mode); + mac_selinux_create_file_clear(); + } + + if (r < 0) { + if (errno != EEXIST) + return log_error_errno(errno, "Failed to create fifo %s: %m", i->path); + + if (lstat(i->path, &st) < 0) + return log_error_errno(errno, "stat(%s) failed: %m", i->path); + + if (!S_ISFIFO(st.st_mode)) { + + if (i->force) { + RUN_WITH_UMASK(0000) { + mac_selinux_create_file_prepare(i->path, S_IFIFO); + r = mkfifo_atomic(i->path, i->mode); + mac_selinux_create_file_clear(); + } + + if (r < 0) + return log_error_errno(r, "Failed to create fifo %s: %m", i->path); + creation = CREATION_FORCE; + } else { + log_warning("\"%s\" already exists and is not a fifo.", i->path); + return 0; + } + } else + creation = CREATION_EXISTING; + } else + creation = CREATION_NORMAL; + log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path); + + r = path_set_perms(i, i->path); + if (r < 0) + return r; + + break; + } + + case CREATE_SYMLINK: { + r = specifier_printf(i->argument, specifier_table, NULL, &resolved); + if (r < 0) + return log_error_errno(r, "Failed to substitute specifiers in symlink target %s: %m", i->argument); + + mac_selinux_create_file_prepare(i->path, S_IFLNK); + r = symlink(resolved, i->path); + mac_selinux_create_file_clear(); + + if (r < 0) { + _cleanup_free_ char *x = NULL; + + if (errno != EEXIST) + return log_error_errno(errno, "symlink(%s, %s) failed: %m", resolved, i->path); + + r = readlink_malloc(i->path, &x); + if (r < 0 || !streq(resolved, x)) { + + if (i->force) { + mac_selinux_create_file_prepare(i->path, S_IFLNK); + r = symlink_atomic(resolved, i->path); + mac_selinux_create_file_clear(); + + if (r < 0) + return log_error_errno(r, "symlink(%s, %s) failed: %m", resolved, i->path); + + creation = CREATION_FORCE; + } else { + log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); + return 0; + } + } else + creation = CREATION_EXISTING; + } else + + creation = CREATION_NORMAL; + log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); + break; + } + + case CREATE_BLOCK_DEVICE: + case CREATE_CHAR_DEVICE: { + mode_t file_type; + + if (have_effective_cap(CAP_MKNOD) == 0) { + /* In a container we lack CAP_MKNOD. We + shouldn't attempt to create the device node in + that case to avoid noise, and we don't support + virtualized devices in containers anyway. */ + + log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); + return 0; + } + + file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR; + + RUN_WITH_UMASK(0000) { + mac_selinux_create_file_prepare(i->path, file_type); + r = mknod(i->path, i->mode | file_type, i->major_minor); + mac_selinux_create_file_clear(); + } + + if (r < 0) { + if (errno == EPERM) { + log_debug("We lack permissions, possibly because of cgroup configuration; " + "skipping creation of device node %s.", i->path); + return 0; + } + + if (errno != EEXIST) + return log_error_errno(errno, "Failed to create device node %s: %m", i->path); + + if (lstat(i->path, &st) < 0) + return log_error_errno(errno, "stat(%s) failed: %m", i->path); + + if ((st.st_mode & S_IFMT) != file_type) { + + if (i->force) { + + RUN_WITH_UMASK(0000) { + mac_selinux_create_file_prepare(i->path, file_type); + r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); + mac_selinux_create_file_clear(); + } + + if (r < 0) + return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path); + creation = CREATION_FORCE; + } else { + log_debug("%s is not a device node.", i->path); + return 0; + } + } else + creation = CREATION_EXISTING; + } else + creation = CREATION_NORMAL; + + log_debug("%s %s device node \"%s\" %u:%u.", + creation_mode_verb_to_string(creation), + i->type == CREATE_BLOCK_DEVICE ? "block" : "char", + i->path, major(i->mode), minor(i->mode)); + + r = path_set_perms(i, i->path); + if (r < 0) + return r; + + break; + } + + case ADJUST_MODE: + case RELABEL_PATH: + r = glob_item(i, path_set_perms, false); + if (r < 0) + return r; + break; + + case RECURSIVE_RELABEL_PATH: + r = glob_item(i, path_set_perms, true); + if (r < 0) + return r; + break; + + case SET_XATTR: + r = glob_item(i, path_set_xattrs, false); + if (r < 0) + return r; + break; + + case RECURSIVE_SET_XATTR: + r = glob_item(i, path_set_xattrs, true); + if (r < 0) + return r; + break; + + case SET_ACL: + r = glob_item(i, path_set_acls, false); + if (r < 0) + return r; + break; + + case RECURSIVE_SET_ACL: + r = glob_item(i, path_set_acls, true); + if (r < 0) + return r; + break; + + case SET_ATTRIBUTE: + r = glob_item(i, path_set_attribute, false); + if (r < 0) + return r; + break; + + case RECURSIVE_SET_ATTRIBUTE: + r = glob_item(i, path_set_attribute, true); + if (r < 0) + return r; + break; + } + + return 0; +} + +static int remove_item_instance(Item *i, const char *instance) { + int r; + + assert(i); + + switch (i->type) { + + case REMOVE_PATH: + if (remove(instance) < 0 && errno != ENOENT) + return log_error_errno(errno, "rm(%s): %m", instance); + + break; + + case TRUNCATE_DIRECTORY: + case RECURSIVE_REMOVE_PATH: + /* FIXME: we probably should use dir_cleanup() here + * instead of rm_rf() so that 'x' is honoured. */ + log_debug("rm -rf \"%s\"", instance); + r = rm_rf(instance, (i->type == RECURSIVE_REMOVE_PATH ? REMOVE_ROOT|REMOVE_SUBVOLUME : 0) | REMOVE_PHYSICAL); + if (r < 0 && r != -ENOENT) + return log_error_errno(r, "rm_rf(%s): %m", instance); + + break; + + default: + assert_not_reached("wut?"); + } + + return 0; +} + +static int remove_item(Item *i) { + assert(i); + + log_debug("Running remove action for entry %c %s", (char) i->type, i->path); + + switch (i->type) { + + case REMOVE_PATH: + case TRUNCATE_DIRECTORY: + case RECURSIVE_REMOVE_PATH: + return glob_item(i, remove_item_instance, false); + + default: + return 0; + } +} + +static int clean_item_instance(Item *i, const char* instance) { + _cleanup_closedir_ DIR *d = NULL; + struct stat s, ps; + bool mountpoint; + usec_t cutoff, n; + char timestamp[FORMAT_TIMESTAMP_MAX]; + + assert(i); + + if (!i->age_set) + return 0; + + n = now(CLOCK_REALTIME); + if (n < i->age) + return 0; + + cutoff = n - i->age; + + d = opendir_nomod(instance); + if (!d) { + if (errno == ENOENT || errno == ENOTDIR) { + log_debug_errno(errno, "Directory \"%s\": %m", instance); + return 0; + } + + log_error_errno(errno, "Failed to open directory %s: %m", instance); + return -errno; + } + + if (fstat(dirfd(d), &s) < 0) + return log_error_errno(errno, "stat(%s) failed: %m", i->path); + + if (!S_ISDIR(s.st_mode)) { + log_error("%s is not a directory.", i->path); + return -ENOTDIR; + } + + if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) + return log_error_errno(errno, "stat(%s/..) failed: %m", i->path); + + mountpoint = s.st_dev != ps.st_dev || s.st_ino == ps.st_ino; + + log_debug("Cleanup threshold for %s \"%s\" is %s", + mountpoint ? "mount point" : "directory", + instance, + format_timestamp_us(timestamp, sizeof(timestamp), cutoff)); + + return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint, + MAX_DEPTH, i->keep_first_level); +} + +static int clean_item(Item *i) { + assert(i); + + log_debug("Running clean action for entry %c %s", (char) i->type, i->path); + + switch (i->type) { + case CREATE_DIRECTORY: + case CREATE_SUBVOLUME: + case CREATE_SUBVOLUME_INHERIT_QUOTA: + case CREATE_SUBVOLUME_NEW_QUOTA: + case EMPTY_DIRECTORY: + case TRUNCATE_DIRECTORY: + case IGNORE_PATH: + case COPY_FILES: + clean_item_instance(i, i->path); + return 0; + case IGNORE_DIRECTORY_PATH: + return glob_item(i, clean_item_instance, false); + default: + return 0; + } +} + +static int process_item_array(ItemArray *array); + +static int process_item(Item *i) { + int r, q, p, t = 0; + _cleanup_free_ char *prefix = NULL; + + assert(i); + + if (i->done) + return 0; + + i->done = true; + + prefix = malloc(strlen(i->path) + 1); + if (!prefix) + return log_oom(); + + PATH_FOREACH_PREFIX(prefix, i->path) { + ItemArray *j; + + j = ordered_hashmap_get(items, prefix); + if (j) { + int s; + + s = process_item_array(j); + if (s < 0 && t == 0) + t = s; + } + } + + r = arg_create ? create_item(i) : 0; + q = arg_remove ? remove_item(i) : 0; + p = arg_clean ? clean_item(i) : 0; + + return t < 0 ? t : + r < 0 ? r : + q < 0 ? q : + p; +} + +static int process_item_array(ItemArray *array) { + unsigned n; + int r = 0, k; + + assert(array); + + for (n = 0; n < array->count; n++) { + k = process_item(array->items + n); + if (k < 0 && r == 0) + r = k; + } + + return r; +} + +static void item_free_contents(Item *i) { + assert(i); + free(i->path); + free(i->argument); + strv_free(i->xattrs); + +#ifdef HAVE_ACL + acl_free(i->acl_access); + acl_free(i->acl_default); +#endif +} + +static void item_array_free(ItemArray *a) { + unsigned n; + + if (!a) + return; + + for (n = 0; n < a->count; n++) + item_free_contents(a->items + n); + free(a->items); + free(a); +} + +static int item_compare(const void *a, const void *b) { + const Item *x = a, *y = b; + + /* Make sure that the ownership taking item is put first, so + * that we first create the node, and then can adjust it */ + + if (takes_ownership(x->type) && !takes_ownership(y->type)) + return -1; + if (!takes_ownership(x->type) && takes_ownership(y->type)) + return 1; + + return (int) x->type - (int) y->type; +} + +static bool item_compatible(Item *a, Item *b) { + assert(a); + assert(b); + assert(streq(a->path, b->path)); + + if (takes_ownership(a->type) && takes_ownership(b->type)) + /* check if the items are the same */ + return streq_ptr(a->argument, b->argument) && + + a->uid_set == b->uid_set && + a->uid == b->uid && + + a->gid_set == b->gid_set && + a->gid == b->gid && + + a->mode_set == b->mode_set && + a->mode == b->mode && + + a->age_set == b->age_set && + a->age == b->age && + + a->mask_perms == b->mask_perms && + + a->keep_first_level == b->keep_first_level && + + a->major_minor == b->major_minor; + + return true; +} + +static bool should_include_path(const char *path) { + char **prefix; + + STRV_FOREACH(prefix, arg_exclude_prefixes) + if (path_startswith(path, *prefix)) { + log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", + path, *prefix); + return false; + } + + STRV_FOREACH(prefix, arg_include_prefixes) + if (path_startswith(path, *prefix)) { + log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); + return true; + } + + /* no matches, so we should include this path only if we + * have no whitelist at all */ + if (strv_length(arg_include_prefixes) == 0) + return true; + + log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); + return false; +} + +static int parse_line(const char *fname, unsigned line, const char *buffer) { + + _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; + _cleanup_(item_free_contents) Item i = {}; + ItemArray *existing; + OrderedHashmap *h; + int r, pos; + bool force = false, boot = false; + + assert(fname); + assert(line >= 1); + assert(buffer); + + r = extract_many_words( + &buffer, + NULL, + EXTRACT_QUOTES, + &action, + &path, + &mode, + &user, + &group, + &age, + NULL); + if (r < 0) + return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line); + else if (r < 2) { + log_error("[%s:%u] Syntax error.", fname, line); + return -EIO; + } + + if (!isempty(buffer) && !streq(buffer, "-")) { + i.argument = strdup(buffer); + if (!i.argument) + return log_oom(); + } + + if (isempty(action)) { + log_error("[%s:%u] Command too short '%s'.", fname, line, action); + return -EINVAL; + } + + for (pos = 1; action[pos]; pos++) { + if (action[pos] == '!' && !boot) + boot = true; + else if (action[pos] == '+' && !force) + force = true; + else { + log_error("[%s:%u] Unknown modifiers in command '%s'", + fname, line, action); + return -EINVAL; + } + } + + if (boot && !arg_boot) { + log_debug("Ignoring entry %s \"%s\" because --boot is not specified.", + action, path); + return 0; + } + + i.type = action[0]; + i.force = force; + + r = specifier_printf(path, specifier_table, NULL, &i.path); + if (r < 0) { + log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path); + return r; + } + + switch (i.type) { + + case CREATE_DIRECTORY: + case CREATE_SUBVOLUME: + case CREATE_SUBVOLUME_INHERIT_QUOTA: + case CREATE_SUBVOLUME_NEW_QUOTA: + case EMPTY_DIRECTORY: + case TRUNCATE_DIRECTORY: + case CREATE_FIFO: + case IGNORE_PATH: + case IGNORE_DIRECTORY_PATH: + case REMOVE_PATH: + case RECURSIVE_REMOVE_PATH: + case ADJUST_MODE: + case RELABEL_PATH: + case RECURSIVE_RELABEL_PATH: + if (i.argument) + log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type); + + break; + + case CREATE_FILE: + case TRUNCATE_FILE: + break; + + case CREATE_SYMLINK: + if (!i.argument) { + i.argument = strappend("/usr/share/factory/", i.path); + if (!i.argument) + return log_oom(); + } + break; + + case WRITE_FILE: + if (!i.argument) { + log_error("[%s:%u] Write file requires argument.", fname, line); + return -EBADMSG; + } + break; + + case COPY_FILES: + if (!i.argument) { + i.argument = strappend("/usr/share/factory/", i.path); + if (!i.argument) + return log_oom(); + } else if (!path_is_absolute(i.argument)) { + log_error("[%s:%u] Source path is not absolute.", fname, line); + return -EBADMSG; + } + + path_kill_slashes(i.argument); + break; + + case CREATE_CHAR_DEVICE: + case CREATE_BLOCK_DEVICE: { + unsigned major, minor; + + if (!i.argument) { + log_error("[%s:%u] Device file requires argument.", fname, line); + return -EBADMSG; + } + + if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) { + log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument); + return -EBADMSG; + } + + i.major_minor = makedev(major, minor); + break; + } + + case SET_XATTR: + case RECURSIVE_SET_XATTR: + if (!i.argument) { + log_error("[%s:%u] Set extended attribute requires argument.", fname, line); + return -EBADMSG; + } + r = parse_xattrs_from_arg(&i); + if (r < 0) + return r; + break; + + case SET_ACL: + case RECURSIVE_SET_ACL: + if (!i.argument) { + log_error("[%s:%u] Set ACLs requires argument.", fname, line); + return -EBADMSG; + } + r = parse_acls_from_arg(&i); + if (r < 0) + return r; + break; + + case SET_ATTRIBUTE: + case RECURSIVE_SET_ATTRIBUTE: + if (!i.argument) { + log_error("[%s:%u] Set file attribute requires argument.", fname, line); + return -EBADMSG; + } + r = parse_attribute_from_arg(&i); + if (r < 0) + return r; + break; + + default: + log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type); + return -EBADMSG; + } + + if (!path_is_absolute(i.path)) { + log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path); + return -EBADMSG; + } + + path_kill_slashes(i.path); + + if (!should_include_path(i.path)) + return 0; + + if (arg_root) { + char *p; + + p = prefix_root(arg_root, i.path); + if (!p) + return log_oom(); + + free(i.path); + i.path = p; + } + + if (!isempty(user) && !streq(user, "-")) { + const char *u = user; + + r = get_user_creds(&u, &i.uid, NULL, NULL, NULL); + if (r < 0) { + log_error("[%s:%u] Unknown user '%s'.", fname, line, user); + return r; + } + + i.uid_set = true; + } + + if (!isempty(group) && !streq(group, "-")) { + const char *g = group; + + r = get_group_creds(&g, &i.gid); + if (r < 0) { + log_error("[%s:%u] Unknown group '%s'.", fname, line, group); + return r; + } + + i.gid_set = true; + } + + if (!isempty(mode) && !streq(mode, "-")) { + const char *mm = mode; + unsigned m; + + if (*mm == '~') { + i.mask_perms = true; + mm++; + } + + if (parse_mode(mm, &m) < 0) { + log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); + return -EBADMSG; + } + + i.mode = m; + i.mode_set = true; + } else + i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644; + + if (!isempty(age) && !streq(age, "-")) { + const char *a = age; + + if (*a == '~') { + i.keep_first_level = true; + a++; + } + + if (parse_sec(a, &i.age) < 0) { + log_error("[%s:%u] Invalid age '%s'.", fname, line, age); + return -EBADMSG; + } + + i.age_set = true; + } + + h = needs_glob(i.type) ? globs : items; + + existing = ordered_hashmap_get(h, i.path); + if (existing) { + unsigned n; + + for (n = 0; n < existing->count; n++) { + if (!item_compatible(existing->items + n, &i)) { + log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.", + fname, line, i.path); + return 0; + } + } + } else { + existing = new0(ItemArray, 1); + r = ordered_hashmap_put(h, i.path, existing); + if (r < 0) + return log_oom(); + } + + if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1)) + return log_oom(); + + memcpy(existing->items + existing->count++, &i, sizeof(i)); + + /* Sort item array, to enforce stable ordering of application */ + qsort_safe(existing->items, existing->count, sizeof(Item), item_compare); + + zero(i); + return 0; +} + +static void help(void) { + printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" + "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --create Create marked files/directories\n" + " --clean Clean up marked directories\n" + " --remove Remove marked files/directories\n" + " --boot Execute actions only safe at boot\n" + " --prefix=PATH Only apply rules with the specified prefix\n" + " --exclude-prefix=PATH Ignore rules with the specified prefix\n" + " --root=PATH Operate on an alternate filesystem root\n", + program_invocation_short_name); +} + +static int parse_argv(int argc, char *argv[]) { + + enum { + ARG_VERSION = 0x100, + ARG_CREATE, + ARG_CLEAN, + ARG_REMOVE, + ARG_BOOT, + ARG_PREFIX, + ARG_EXCLUDE_PREFIX, + ARG_ROOT, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "create", no_argument, NULL, ARG_CREATE }, + { "clean", no_argument, NULL, ARG_CLEAN }, + { "remove", no_argument, NULL, ARG_REMOVE }, + { "boot", no_argument, NULL, ARG_BOOT }, + { "prefix", required_argument, NULL, ARG_PREFIX }, + { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, + { "root", required_argument, NULL, ARG_ROOT }, + {} + }; + + int c, r; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) + + switch (c) { + + case 'h': + help(); + return 0; + + case ARG_VERSION: + return version(); + + case ARG_CREATE: + arg_create = true; + break; + + case ARG_CLEAN: + arg_clean = true; + break; + + case ARG_REMOVE: + arg_remove = true; + break; + + case ARG_BOOT: + arg_boot = true; + break; + + case ARG_PREFIX: + if (strv_push(&arg_include_prefixes, optarg) < 0) + return log_oom(); + break; + + case ARG_EXCLUDE_PREFIX: + if (strv_push(&arg_exclude_prefixes, optarg) < 0) + return log_oom(); + break; + + case ARG_ROOT: + r = parse_path_argument_and_warn(optarg, true, &arg_root); + if (r < 0) + return r; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (!arg_clean && !arg_create && !arg_remove) { + log_error("You need to specify at least one of --clean, --create or --remove."); + return -EINVAL; + } + + return 1; +} + +static int read_config_file(const char *fn, bool ignore_enoent) { + _cleanup_fclose_ FILE *_f = NULL; + FILE *f; + char line[LINE_MAX]; + Iterator iterator; + unsigned v = 0; + Item *i; + int r = 0; + + assert(fn); + + if (streq(fn, "-")) { + log_debug("Reading config from stdin."); + fn = "<stdin>"; + f = stdin; + } else { + r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &_f); + if (r < 0) { + if (ignore_enoent && r == -ENOENT) { + log_debug_errno(r, "Failed to open \"%s\", ignoring: %m", fn); + return 0; + } + + return log_error_errno(r, "Failed to open '%s': %m", fn); + } + log_debug("Reading config file \"%s\".", fn); + f = _f; + } + + FOREACH_LINE(line, f, break) { + char *l; + int k; + + v++; + + l = strstrip(line); + if (*l == '#' || *l == 0) + continue; + + k = parse_line(fn, v, l); + if (k < 0 && r == 0) + r = k; + } + + /* we have to determine age parameter for each entry of type X */ + ORDERED_HASHMAP_FOREACH(i, globs, iterator) { + Iterator iter; + Item *j, *candidate_item = NULL; + + if (i->type != IGNORE_DIRECTORY_PATH) + continue; + + ORDERED_HASHMAP_FOREACH(j, items, iter) { + if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) + continue; + + if (path_equal(j->path, i->path)) { + candidate_item = j; + break; + } + + if ((!candidate_item && path_startswith(i->path, j->path)) || + (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0))) + candidate_item = j; + } + + if (candidate_item && candidate_item->age_set) { + i->age = candidate_item->age; + i->age_set = true; + } + } + + if (ferror(f)) { + log_error_errno(errno, "Failed to read from file %s: %m", fn); + if (r == 0) + r = -EIO; + } + + return r; +} + +int main(int argc, char *argv[]) { + int r, k; + ItemArray *a; + Iterator iterator; + + r = parse_argv(argc, argv); + if (r <= 0) + goto finish; + + log_set_target(LOG_TARGET_AUTO); + log_parse_environment(); + log_open(); + + umask(0022); + + mac_selinux_init(); + + items = ordered_hashmap_new(&string_hash_ops); + globs = ordered_hashmap_new(&string_hash_ops); + + if (!items || !globs) { + r = log_oom(); + goto finish; + } + + r = 0; + + if (optind < argc) { + int j; + + for (j = optind; j < argc; j++) { + k = read_config_file(argv[j], false); + if (k < 0 && r == 0) + r = k; + } + + } else { + _cleanup_strv_free_ char **files = NULL; + char **f; + + r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs); + if (r < 0) { + log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m"); + goto finish; + } + + STRV_FOREACH(f, files) { + k = read_config_file(*f, true); + if (k < 0 && r == 0) + r = k; + } + } + + /* The non-globbing ones usually create things, hence we apply + * them first */ + ORDERED_HASHMAP_FOREACH(a, items, iterator) { + k = process_item_array(a); + if (k < 0 && r == 0) + r = k; + } + + /* The globbing ones usually alter things, hence we apply them + * second. */ + ORDERED_HASHMAP_FOREACH(a, globs, iterator) { + k = process_item_array(a); + if (k < 0 && r == 0) + r = k; + } + +finish: + while ((a = ordered_hashmap_steal_first(items))) + item_array_free(a); + + while ((a = ordered_hashmap_steal_first(globs))) + item_array_free(a); + + ordered_hashmap_free(items); + ordered_hashmap_free(globs); + + free(arg_include_prefixes); + free(arg_exclude_prefixes); + free(arg_root); + + set_free_free(unix_sockets); + + mac_selinux_finish(); + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} diff --git a/src/grp-initprogs/systemd-tmpfiles/var.tmpfiles b/src/grp-initprogs/systemd-tmpfiles/var.tmpfiles new file mode 100644 index 0000000000..ae7952e77a --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/var.tmpfiles @@ -0,0 +1,22 @@ +# This file is part of systemd. +# +# 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. + +# See tmpfiles.d(5) for details + +q /var 0755 - - - + +L /var/run - - - - ../run + +d /var/log 0755 - - - +f /var/log/wtmp 0664 root utmp - +f /var/log/btmp 0600 root utmp - + +d /var/cache 0755 - - - + +d /var/lib 0755 - - - + +d /var/spool 0755 - - - diff --git a/src/grp-initprogs/systemd-tmpfiles/x11.tmpfiles b/src/grp-initprogs/systemd-tmpfiles/x11.tmpfiles new file mode 100644 index 0000000000..4c96a54a13 --- /dev/null +++ b/src/grp-initprogs/systemd-tmpfiles/x11.tmpfiles @@ -0,0 +1,18 @@ +# This file is part of systemd. +# +# 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. + +# See tmpfiles.d(5) for details + +# Make sure these are created by default so that nobody else can +d /tmp/.X11-unix 1777 root root 10d +d /tmp/.ICE-unix 1777 root root 10d +d /tmp/.XIM-unix 1777 root root 10d +d /tmp/.font-unix 1777 root root 10d +d /tmp/.Test-unix 1777 root root 10d + +# Unlink the X11 lock files +r! /tmp/.X[0-9]*-lock |