-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2011 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
- 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/>.
-***/
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
#include <fnmatch.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
-#include "util.h"
-#include "mkdir.h"
+#include "alloc-util.h"
+#include "conf-files.h"
+#include "conf-parser.h"
+#include "dirent-util.h"
+#include "extract-word.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
#include "hashmap.h"
-#include "set.h"
-#include "path-util.h"
+#include "install-printf.h"
+#include "install.h"
+#include "locale-util.h"
+#include "log.h"
+#include "macro.h"
+#include "mkdir.h"
#include "path-lookup.h"
+#include "path-util.h"
+#include "rm-rf.h"
+#include "set.h"
+#include "special.h"
+#include "stat-util.h"
+#include "string-table.h"
+#include "string-util.h"
#include "strv.h"
#include "unit-name.h"
-#include "install.h"
-#include "conf-parser.h"
-#include "conf-files.h"
-#include "install-printf.h"
-#include "special.h"
+
+#define UNIT_FILE_FOLLOW_SYMLINK_MAX 64
+
+typedef enum SearchFlags {
+ SEARCH_LOAD = 1 << 0,
+ SEARCH_FOLLOW_CONFIG_SYMLINKS = 1 << 1,
+ SEARCH_DROPIN = 1 << 2,
+} SearchFlags;
typedef struct {
- OrderedHashmap *will_install;
- OrderedHashmap *have_installed;
+ OrderedHashmap *will_process;
+ OrderedHashmap *have_processed;
} InstallContext;
-static int in_search_path(const char *path, char **search) {
+typedef enum {
+ PRESET_UNKNOWN,
+ PRESET_ENABLE,
+ PRESET_DISABLE,
+} PresetAction;
+
+typedef struct {
+ char *pattern;
+ PresetAction action;
+ char **instances;
+} PresetRule;
+
+typedef struct {
+ PresetRule *rules;
+ size_t n_rules;
+} Presets;
+
+static inline bool unit_file_install_info_has_rules(const UnitFileInstallInfo *i) {
+ assert(i);
+
+ return !strv_isempty(i->aliases) ||
+ !strv_isempty(i->wanted_by) ||
+ !strv_isempty(i->required_by);
+}
+
+static inline bool unit_file_install_info_has_also(const UnitFileInstallInfo *i) {
+ assert(i);
+
+ return !strv_isempty(i->also);
+}
+
+static inline void presets_freep(Presets *p) {
+ size_t i;
+
+ if (!p)
+ return;
+
+ for (i = 0; i < p->n_rules; i++) {
+ free(p->rules[i].pattern);
+ strv_free(p->rules[i].instances);
+ }
+
+ free(p->rules);
+ p->n_rules = 0;
+}
+
+bool unit_type_may_alias(UnitType type) {
+ return IN_SET(type,
+ UNIT_SERVICE,
+ UNIT_SOCKET,
+ UNIT_TARGET,
+ UNIT_DEVICE,
+ UNIT_TIMER,
+ UNIT_PATH);
+}
+
+bool unit_type_may_template(UnitType type) {
+ return IN_SET(type,
+ UNIT_SERVICE,
+ UNIT_SOCKET,
+ UNIT_TARGET,
+ UNIT_TIMER,
+ UNIT_PATH);
+}
+
+static const char *unit_file_type_table[_UNIT_FILE_TYPE_MAX] = {
+ [UNIT_FILE_TYPE_REGULAR] = "regular",
+ [UNIT_FILE_TYPE_SYMLINK] = "symlink",
+ [UNIT_FILE_TYPE_MASKED] = "masked",
+};
+
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(unit_file_type, UnitFileType);
+
+static int in_search_path(const LookupPaths *p, const char *path) {
_cleanup_free_ char *parent = NULL;
- int r;
+ char **i;
assert(path);
- r = path_get_parent(path, &parent);
- if (r < 0)
- return r;
+ parent = dirname_malloc(path);
+ if (!parent)
+ return -ENOMEM;
- return strv_contains(search, parent);
+ STRV_FOREACH(i, p->search_path)
+ if (path_equal(parent, *i))
+ return true;
+
+ return false;
}
-static int get_config_path(UnitFileScope scope, bool runtime, const char *root_dir, char **ret) {
- char *p = NULL;
- int r;
+static const char* skip_root(const LookupPaths *p, const char *path) {
+ char *e;
- assert(scope >= 0);
- assert(scope < _UNIT_FILE_SCOPE_MAX);
- assert(ret);
+ assert(p);
+ assert(path);
- switch (scope) {
+ if (!p->root_dir)
+ return path;
- case UNIT_FILE_SYSTEM:
+ e = path_startswith(path, p->root_dir);
+ if (!e)
+ return NULL;
- if (runtime)
- p = path_join(root_dir, "/run/systemd/system", NULL);
- else
- p = path_join(root_dir, SYSTEM_CONFIG_UNIT_PATH, NULL);
- break;
+ /* Make sure the returned path starts with a slash */
+ if (e[0] != '/') {
+ if (e == path || e[-1] != '/')
+ return NULL;
- case UNIT_FILE_GLOBAL:
+ e--;
+ }
- if (root_dir)
- return -EINVAL;
+ return e;
+}
- if (runtime)
- p = strdup("/run/systemd/user");
- else
- p = strdup(USER_CONFIG_UNIT_PATH);
- break;
+static int path_is_generator(const LookupPaths *p, const char *path) {
+ _cleanup_free_ char *parent = NULL;
- case UNIT_FILE_USER:
+ assert(p);
+ assert(path);
- if (root_dir)
- return -EINVAL;
+ parent = dirname_malloc(path);
+ if (!parent)
+ return -ENOMEM;
- if (runtime)
- r = user_runtime_dir(&p);
- else
- r = user_config_home(&p);
+ return path_equal_ptr(parent, p->generator) ||
+ path_equal_ptr(parent, p->generator_early) ||
+ path_equal_ptr(parent, p->generator_late);
+}
- if (r <= 0)
- return r < 0 ? r : -ENOENT;
+static int path_is_transient(const LookupPaths *p, const char *path) {
+ _cleanup_free_ char *parent = NULL;
- break;
+ assert(p);
+ assert(path);
- default:
- assert_not_reached("Bad scope");
+ parent = dirname_malloc(path);
+ if (!parent)
+ return -ENOMEM;
+
+ return path_equal_ptr(parent, p->transient);
+}
+
+static int path_is_control(const LookupPaths *p, const char *path) {
+ _cleanup_free_ char *parent = NULL;
+
+ assert(p);
+ assert(path);
+
+ parent = dirname_malloc(path);
+ if (!parent)
+ return -ENOMEM;
+
+ return path_equal_ptr(parent, p->persistent_control) ||
+ path_equal_ptr(parent, p->runtime_control);
+}
+
+static int path_is_config(const LookupPaths *p, const char *path, bool check_parent) {
+ _cleanup_free_ char *parent = NULL;
+
+ assert(p);
+ assert(path);
+
+ /* Note that we do *not* have generic checks for /etc or /run in place, since with
+ * them we couldn't discern configuration from transient or generated units */
+
+ if (check_parent) {
+ parent = dirname_malloc(path);
+ if (!parent)
+ return -ENOMEM;
+
+ path = parent;
}
- if (!p)
+ return path_equal_ptr(path, p->persistent_config) ||
+ path_equal_ptr(path, p->runtime_config);
+}
+
+static int path_is_runtime(const LookupPaths *p, const char *path, bool check_parent) {
+ _cleanup_free_ char *parent = NULL;
+ const char *rpath;
+
+ assert(p);
+ assert(path);
+
+ /* Everything in /run is considered runtime. On top of that we also add
+ * explicit checks for the various runtime directories, as safety net. */
+
+ rpath = skip_root(p, path);
+ if (rpath && path_startswith(rpath, "/run"))
+ return true;
+
+ if (check_parent) {
+ parent = dirname_malloc(path);
+ if (!parent)
+ return -ENOMEM;
+
+ path = parent;
+ }
+
+ return path_equal_ptr(path, p->runtime_config) ||
+ path_equal_ptr(path, p->generator) ||
+ path_equal_ptr(path, p->generator_early) ||
+ path_equal_ptr(path, p->generator_late) ||
+ path_equal_ptr(path, p->transient) ||
+ path_equal_ptr(path, p->runtime_control);
+}
+
+static int path_is_vendor(const LookupPaths *p, const char *path) {
+ const char *rpath;
+
+ assert(p);
+ assert(path);
+
+ rpath = skip_root(p, path);
+ if (!rpath)
+ return 0;
+
+ if (path_startswith(rpath, "/usr"))
+ return true;
+
+#if HAVE_SPLIT_USR
+ if (path_startswith(rpath, "/lib"))
+ return true;
+#endif
+
+ return path_equal(rpath, SYSTEM_DATA_UNIT_PATH);
+}
+
+int unit_file_changes_add(
+ UnitFileChange **changes,
+ size_t *n_changes,
+ UnitFileChangeType type,
+ const char *path,
+ const char *source) {
+
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ UnitFileChange *c;
+
+ assert(path);
+ assert(!changes == !n_changes);
+
+ if (!changes)
+ return 0;
+
+ c = reallocarray(*changes, *n_changes + 1, sizeof(UnitFileChange));
+ if (!c)
+ return -ENOMEM;
+ *changes = c;
+
+ p = strdup(path);
+ if (source)
+ s = strdup(source);
+
+ if (!p || (source && !s))
return -ENOMEM;
- *ret = p;
+ path_simplify(p, false);
+ if (s)
+ path_simplify(s, false);
+
+ c[*n_changes] = (UnitFileChange) { type, p, s };
+ p = s = NULL;
+ (*n_changes) ++;
return 0;
}
+void unit_file_changes_free(UnitFileChange *changes, size_t n_changes) {
+ size_t i;
+
+ assert(changes || n_changes == 0);
+
+ for (i = 0; i < n_changes; i++) {
+ free(changes[i].path);
+ free(changes[i].source);
+ }
+
+ free(changes);
+}
+
+void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *changes, size_t n_changes, bool quiet) {
+ size_t i;
+ bool logged = false;
+
+ assert(changes || n_changes == 0);
+ /* If verb is not specified, errors are not allowed! */
+ assert(verb || r >= 0);
+
+ for (i = 0; i < n_changes; i++) {
+ assert(verb || changes[i].type >= 0);
+
+ switch(changes[i].type) {
+ case UNIT_FILE_SYMLINK:
+ if (!quiet)
+ log_info("Created symlink %s %s %s.",
+ changes[i].path,
+ special_glyph(SPECIAL_GLYPH_ARROW),
+ changes[i].source);
+ break;
+ case UNIT_FILE_UNLINK:
+ if (!quiet)
+ log_info("Removed %s.", changes[i].path);
+ break;
+ case UNIT_FILE_IS_MASKED:
+ if (!quiet)
+ log_info("Unit %s is masked, ignoring.", changes[i].path);
+ break;
+ case UNIT_FILE_IS_DANGLING:
+ if (!quiet)
+ log_info("Unit %s is an alias to a unit that is not present, ignoring.",
+ changes[i].path);
+ break;
+ case -EEXIST:
+ if (changes[i].source)
+ log_error_errno(changes[i].type,
+ "Failed to %s unit, file %s already exists and is a symlink to %s.",
+ verb, changes[i].path, changes[i].source);
+ else
+ log_error_errno(changes[i].type,
+ "Failed to %s unit, file %s already exists.",
+ verb, changes[i].path);
+ logged = true;
+ break;
+ case -ERFKILL:
+ log_error_errno(changes[i].type, "Failed to %s unit, unit %s is masked.",
+ verb, changes[i].path);
+ logged = true;
+ break;
+ case -EADDRNOTAVAIL:
+ log_error_errno(changes[i].type, "Failed to %s unit, unit %s is transient or generated.",
+ verb, changes[i].path);
+ logged = true;
+ break;
+ case -ELOOP:
+ log_error_errno(changes[i].type, "Failed to %s unit, refusing to operate on linked unit file %s",
+ verb, changes[i].path);
+ logged = true;
+ break;
+
+ case -ENOENT:
+ log_error_errno(changes[i].type, "Failed to %s unit, unit %s does not exist.", verb, changes[i].path);
+ logged = true;
+ break;
+
+ default:
+ assert(changes[i].type < 0);
+ log_error_errno(changes[i].type, "Failed to %s unit, file %s: %m.",
+ verb, changes[i].path);
+ logged = true;
+ }
+ }
+
+ if (r < 0 && !logged)
+ log_error_errno(r, "Failed to %s: %m.", verb);
+}
+
+/**
+ * Checks if two paths or symlinks from wd are the same, when root is the root of the filesystem.
+ * wc should be the full path in the host file system.
+ */
+static bool chroot_symlinks_same(const char *root, const char *wd, const char *a, const char *b) {
+ assert(path_is_absolute(wd));
+
+ /* This will give incorrect results if the paths are relative and go outside
+ * of the chroot. False negatives are possible. */
+
+ if (!root)
+ root = "/";
+
+ a = strjoina(path_is_absolute(a) ? root : wd, "/", a);
+ b = strjoina(path_is_absolute(b) ? root : wd, "/", b);
+ return path_equal_or_files_same(a, b, 0);
+}
+
+static int create_symlink(
+ const LookupPaths *paths,
+ const char *old_path,
+ const char *new_path,
+ bool force,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ _cleanup_free_ char *dest = NULL, *dirname = NULL;
+ const char *rp;
+ int r;
+
+ assert(old_path);
+ assert(new_path);
+
+ rp = skip_root(paths, old_path);
+ if (rp)
+ old_path = rp;
+
+ /* Actually create a symlink, and remember that we did. Is
+ * smart enough to check if there's already a valid symlink in
+ * place.
+ *
+ * Returns 1 if a symlink was created or already exists and points to
+ * the right place, or negative on error.
+ */
+
+ mkdir_parents_label(new_path, 0755);
+
+ if (symlink(old_path, new_path) >= 0) {
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
+ return 1;
+ }
+
+ if (errno != EEXIST) {
+ unit_file_changes_add(changes, n_changes, -errno, new_path, NULL);
+ return -errno;
+ }
+
+ r = readlink_malloc(new_path, &dest);
+ if (r < 0) {
+ /* translate EINVAL (non-symlink exists) to EEXIST */
+ if (r == -EINVAL)
+ r = -EEXIST;
+
+ unit_file_changes_add(changes, n_changes, r, new_path, NULL);
+ return r;
+ }
+
+ dirname = dirname_malloc(new_path);
+ if (!dirname)
+ return -ENOMEM;
+
+ if (chroot_symlinks_same(paths->root_dir, dirname, dest, old_path)) {
+ log_debug("Symlink %s → %s already exists", new_path, dest);
+ return 1;
+ }
+
+ if (!force) {
+ unit_file_changes_add(changes, n_changes, -EEXIST, new_path, dest);
+ return -EEXIST;
+ }
+
+ r = symlink_atomic(old_path, new_path);
+ if (r < 0) {
+ unit_file_changes_add(changes, n_changes, r, new_path, NULL);
+ return r;
+ }
+
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
+
+ return 1;
+}
+
static int mark_symlink_for_removal(
Set **remove_symlinks_to,
const char *p) {
assert(p);
- r = set_ensure_allocated(remove_symlinks_to, &string_hash_ops);
+ r = set_ensure_allocated(remove_symlinks_to, &path_hash_ops);
if (r < 0)
return r;
if (!n)
return -ENOMEM;
- path_kill_slashes(n);
+ path_simplify(n, false);
r = set_consume(*remove_symlinks_to, n);
+ if (r == -EEXIST)
+ return 0;
if (r < 0)
- return r == -EEXIST ? 0 : r;
+ return r;
- return 0;
+ return 1;
}
static int remove_marked_symlinks_fd(
int fd,
const char *path,
const char *config_path,
- bool *deleted,
+ const LookupPaths *lp,
+ bool dry_run,
+ bool *restart,
UnitFileChange **changes,
- unsigned *n_changes,
- char** instance_whitelist) {
+ size_t *n_changes) {
_cleanup_closedir_ DIR *d = NULL;
+ struct dirent *de;
int r = 0;
assert(remove_symlinks_to);
assert(fd >= 0);
assert(path);
assert(config_path);
- assert(deleted);
+ assert(lp);
+ assert(restart);
d = fdopendir(fd);
if (!d) {
rewinddir(d);
- for (;;) {
- struct dirent *de;
-
- errno = 0;
- de = readdir(d);
- if (!de && errno != 0) {
- r = -errno;
- break;
- }
-
- if (!de)
- break;
-
- if (hidden_file(de->d_name))
- continue;
+ FOREACH_DIRENT(de, d, return -errno) {
dirent_ensure_type(d, de);
if (de->d_type == DT_DIR) {
- int nfd, q;
_cleanup_free_ char *p = NULL;
+ int nfd, q;
nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
if (nfd < 0) {
}
/* This will close nfd, regardless whether it succeeds or not */
- q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, deleted, changes, n_changes, instance_whitelist);
+ q = remove_marked_symlinks_fd(remove_symlinks_to, nfd, p, config_path, lp, dry_run, restart, changes, n_changes);
if (q < 0 && r == 0)
r = q;
} else if (de->d_type == DT_LNK) {
_cleanup_free_ char *p = NULL, *dest = NULL;
- int q;
+ const char *rp;
bool found;
+ int q;
if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY))
continue;
- if (unit_name_is_valid(de->d_name, UNIT_NAME_INSTANCE) &&
- instance_whitelist &&
- !strv_contains(instance_whitelist, de->d_name)) {
-
- _cleanup_free_ char *w = NULL;
-
- /* OK, the file is not listed directly
- * in the whitelist, so let's check if
- * the template of it might be
- * listed. */
-
- r = unit_name_template(de->d_name, &w);
- if (r < 0)
- return r;
-
- if (!strv_contains(instance_whitelist, w))
- continue;
- }
-
p = path_make_absolute(de->d_name, path);
if (!p)
return -ENOMEM;
+ path_simplify(p, false);
- q = readlink_and_canonicalize(p, &dest);
+ q = readlink_malloc(p, &dest);
+ if (q == -ENOENT)
+ continue;
if (q < 0) {
- if (q == -ENOENT)
- continue;
-
if (r == 0)
r = q;
continue;
}
- found =
- set_get(remove_symlinks_to, dest) ||
- set_get(remove_symlinks_to, basename(dest));
+ /* We remove all links pointing to a file or path that is marked, as well as all files sharing
+ * the same name as a file that is marked. */
+
+ found = set_contains(remove_symlinks_to, dest) ||
+ set_contains(remove_symlinks_to, basename(dest)) ||
+ set_contains(remove_symlinks_to, de->d_name);
if (!found)
continue;
- if (unlink(p) < 0 && errno != ENOENT) {
- if (r == 0)
- r = -errno;
- continue;
+ if (!dry_run) {
+ if (unlinkat(fd, de->d_name, 0) < 0 && errno != ENOENT) {
+ if (r == 0)
+ r = -errno;
+ unit_file_changes_add(changes, n_changes, -errno, p, NULL);
+ continue;
+ }
+
+ (void) rmdir_parents(p, config_path);
}
- path_kill_slashes(p);
- rmdir_parents(p, config_path);
unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, p, NULL);
- if (!set_get(remove_symlinks_to, p)) {
+ /* Now, remember the full path (but with the root prefix removed) of
+ * the symlink we just removed, and remove any symlinks to it, too. */
- q = mark_symlink_for_removal(&remove_symlinks_to, p);
- if (q < 0) {
- if (r == 0)
- r = q;
- } else
- *deleted = true;
- }
+ rp = skip_root(lp, p);
+ q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: p);
+ if (q < 0)
+ return q;
+ if (q > 0 && !dry_run)
+ *restart = true;
}
}
static int remove_marked_symlinks(
Set *remove_symlinks_to,
const char *config_path,
+ const LookupPaths *lp,
+ bool dry_run,
UnitFileChange **changes,
- unsigned *n_changes,
- char** instance_whitelist) {
+ size_t *n_changes) {
_cleanup_close_ int fd = -1;
+ bool restart;
int r = 0;
- bool deleted;
assert(config_path);
+ assert(lp);
if (set_size(remove_symlinks_to) <= 0)
return 0;
- fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
+ fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC);
if (fd < 0)
- return -errno;
+ return errno == ENOENT ? 0 : -errno;
do {
int q, cfd;
- deleted = false;
+ restart = false;
cfd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
- if (cfd < 0) {
- r = -errno;
- break;
- }
+ if (cfd < 0)
+ return -errno;
/* This takes possession of cfd and closes it */
- q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, &deleted, changes, n_changes, instance_whitelist);
+ q = remove_marked_symlinks_fd(remove_symlinks_to, cfd, config_path, config_path, lp, dry_run, &restart, changes, n_changes);
if (r == 0)
r = q;
- } while (deleted);
+ } while (restart);
return r;
}
+static int is_symlink_with_known_name(const UnitFileInstallInfo *i, const char *name) {
+ int r;
+
+ if (streq(name, i->name))
+ return true;
+
+ if (strv_contains(i->aliases, name))
+ return true;
+
+ /* Look for template symlink matching DefaultInstance */
+ if (i->default_instance && unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) {
+ _cleanup_free_ char *s = NULL;
+
+ r = unit_name_replace_instance(i->name, i->default_instance, &s);
+ if (r < 0) {
+ if (r != -EINVAL)
+ return r;
+
+ } else if (streq(name, s))
+ return true;
+ }
+
+ return false;
+}
+
static int find_symlinks_fd(
- const char *name,
+ const char *root_dir,
+ const UnitFileInstallInfo *i,
+ bool match_aliases,
+ bool ignore_same_name,
int fd,
const char *path,
const char *config_path,
bool *same_name_link) {
- int r = 0;
_cleanup_closedir_ DIR *d = NULL;
+ struct dirent *de;
+ int r = 0;
- assert(name);
+ assert(i);
assert(fd >= 0);
assert(path);
assert(config_path);
return -errno;
}
- for (;;) {
- struct dirent *de;
-
- errno = 0;
- de = readdir(d);
- if (!de && errno != 0)
- return -errno;
-
- if (!de)
- return r;
-
- if (hidden_file(de->d_name))
- continue;
+ FOREACH_DIRENT(de, d, return -errno) {
dirent_ensure_type(d, de);
if (de->d_type == DT_DIR) {
- int nfd, q;
_cleanup_free_ char *p = NULL;
+ int nfd, q;
nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
if (nfd < 0) {
}
/* This will close nfd, regardless whether it succeeds or not */
- q = find_symlinks_fd(name, nfd, p, config_path, same_name_link);
+ q = find_symlinks_fd(root_dir, i, match_aliases, ignore_same_name, nfd,
+ p, config_path, same_name_link);
if (q > 0)
return 1;
if (r == 0)
} else if (de->d_type == DT_LNK) {
_cleanup_free_ char *p = NULL, *dest = NULL;
- bool found_path, found_dest, b = false;
+ bool found_path = false, found_dest, b = false;
int q;
/* Acquire symlink name */
return -ENOMEM;
/* Acquire symlink destination */
- q = readlink_and_canonicalize(p, &dest);
+ q = readlink_malloc(p, &dest);
+ if (q == -ENOENT)
+ continue;
if (q < 0) {
- if (q == -ENOENT)
- continue;
-
if (r == 0)
r = q;
continue;
}
- /* Check if the symlink itself matches what we
- * are looking for */
- if (path_is_absolute(name))
- found_path = path_equal(p, name);
- else
- found_path = streq(de->d_name, name);
+ /* Make absolute */
+ if (!path_is_absolute(dest)) {
+ char *x;
- /* Check if what the symlink points to
- * matches what we are looking for */
- if (path_is_absolute(name))
- found_dest = path_equal(dest, name);
- else
- found_dest = streq(basename(dest), name);
+ x = prefix_root(root_dir, dest);
+ if (!x)
+ return -ENOMEM;
+
+ free_and_replace(dest, x);
+ }
+
+ assert(unit_name_is_valid(i->name, UNIT_NAME_ANY));
+ if (!ignore_same_name)
+ /* Check if the symlink itself matches what we are looking for.
+ *
+ * If ignore_same_name is specified, we are in one of the directories which
+ * have lower priority than the unit file, and even if a file or symlink with
+ * this name was found, we should ignore it. */
+ found_path = streq(de->d_name, i->name);
+
+ /* Check if what the symlink points to matches what we are looking for */
+ found_dest = streq(basename(dest), i->name);
if (found_path && found_dest) {
_cleanup_free_ char *t = NULL;
/* Filter out same name links in the main
* config path */
- t = path_make_absolute(name, config_path);
+ t = path_make_absolute(i->name, config_path);
if (!t)
return -ENOMEM;
if (b)
*same_name_link = true;
- else if (found_path || found_dest)
- return 1;
+ else if (found_path || found_dest) {
+ if (!match_aliases)
+ return 1;
+
+ /* Check if symlink name is in the set of names used by [Install] */
+ q = is_symlink_with_known_name(i, de->d_name);
+ if (q < 0)
+ return q;
+ if (q > 0)
+ return 1;
+ }
}
}
+
+ return r;
}
static int find_symlinks(
- const char *name,
+ const char *root_dir,
+ const UnitFileInstallInfo *i,
+ bool match_name,
+ bool ignore_same_name,
const char *config_path,
bool *same_name_link) {
int fd;
- assert(name);
+ assert(i);
assert(config_path);
assert(same_name_link);
- fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
+ fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC);
if (fd < 0) {
- if (errno == ENOENT)
+ if (IN_SET(errno, ENOENT, ENOTDIR, EACCES))
return 0;
return -errno;
}
/* This takes possession of fd and closes it */
- return find_symlinks_fd(name, fd, config_path, config_path, same_name_link);
+ return find_symlinks_fd(root_dir, i, match_name, ignore_same_name, fd,
+ config_path, config_path, same_name_link);
}
static int find_symlinks_in_scope(
UnitFileScope scope,
- const char *root_dir,
- const char *name,
+ const LookupPaths *paths,
+ const UnitFileInstallInfo *i,
+ bool match_name,
UnitFileState *state) {
+ bool same_name_link_runtime = false, same_name_link_config = false;
+ bool enabled_in_runtime = false, enabled_at_all = false;
+ bool ignore_same_name = false;
+ char **p;
int r;
- _cleanup_free_ char *normal_path = NULL, *runtime_path = NULL;
- bool same_name_link_runtime = false, same_name_link = false;
- assert(scope >= 0);
- assert(scope < _UNIT_FILE_SCOPE_MAX);
- assert(name);
+ assert(paths);
+ assert(i);
- /* First look in runtime config path */
- r = get_config_path(scope, true, root_dir, &normal_path);
- if (r < 0)
- return r;
+ /* As we iterate over the list of search paths in paths->search_path, we may encounter "same name"
+ * symlinks. The ones which are "below" (i.e. have lower priority) than the unit file itself are
+ * efectively masked, so we should ignore them. */
- r = find_symlinks(name, normal_path, &same_name_link_runtime);
- if (r < 0)
- return r;
- else if (r > 0) {
- *state = UNIT_FILE_ENABLED_RUNTIME;
- return r;
+ STRV_FOREACH(p, paths->search_path) {
+ bool same_name_link = false;
+
+ r = find_symlinks(paths->root_dir, i, match_name, ignore_same_name, *p, &same_name_link);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ /* We found symlinks in this dir? Yay! Let's see where precisely it is enabled. */
+
+ if (path_equal_ptr(*p, paths->persistent_config)) {
+ /* This is the best outcome, let's return it immediately. */
+ *state = UNIT_FILE_ENABLED;
+ return 1;
+ }
+
+ /* look for global enablement of user units */
+ if (scope == UNIT_FILE_USER && path_is_user_config_dir(*p)) {
+ *state = UNIT_FILE_ENABLED;
+ return 1;
+ }
+
+ r = path_is_runtime(paths, *p, false);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ enabled_in_runtime = true;
+ else
+ enabled_at_all = true;
+
+ } else if (same_name_link) {
+ if (path_equal_ptr(*p, paths->persistent_config))
+ same_name_link_config = true;
+ else {
+ r = path_is_runtime(paths, *p, false);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ same_name_link_runtime = true;
+ }
+ }
+
+ /* Check if next iteration will be "below" the unit file (either a regular file
+ * or a symlink), and hence should be ignored */
+ if (!ignore_same_name && path_startswith(i->path, *p))
+ ignore_same_name = true;
}
- /* Then look in the normal config path */
- r = get_config_path(scope, false, root_dir, &runtime_path);
- if (r < 0)
- return r;
+ if (enabled_in_runtime) {
+ *state = UNIT_FILE_ENABLED_RUNTIME;
+ return 1;
+ }
- r = find_symlinks(name, runtime_path, &same_name_link);
- if (r < 0)
- return r;
- else if (r > 0) {
- *state = UNIT_FILE_ENABLED;
- return r;
+ /* Here's a special rule: if the unit we are looking for is an instance, and it symlinked in the search path
+ * outside of runtime and configuration directory, then we consider it statically enabled. Note we do that only
+ * for instance, not for regular names, as those are merely aliases, while instances explicitly instantiate
+ * something, and hence are a much stronger concept. */
+ if (enabled_at_all && unit_name_is_valid(i->name, UNIT_NAME_INSTANCE)) {
+ *state = UNIT_FILE_STATIC;
+ return 1;
}
/* Hmm, we didn't find it, but maybe we found the same name
* link? */
+ if (same_name_link_config) {
+ *state = UNIT_FILE_LINKED;
+ return 1;
+ }
if (same_name_link_runtime) {
*state = UNIT_FILE_LINKED_RUNTIME;
return 1;
- } else if (same_name_link) {
- *state = UNIT_FILE_LINKED;
- return 1;
}
return 0;
}
-int unit_file_mask(
- UnitFileScope scope,
- bool runtime,
- const char *root_dir,
- char **files,
- bool force,
- UnitFileChange **changes,
- unsigned *n_changes) {
-
- char **i;
- _cleanup_free_ char *prefix = NULL;
- int r;
+static void install_info_free(UnitFileInstallInfo *i) {
- assert(scope >= 0);
- assert(scope < _UNIT_FILE_SCOPE_MAX);
+ if (!i)
+ return;
- r = get_config_path(scope, runtime, root_dir, &prefix);
- if (r < 0)
- return r;
+ free(i->name);
+ free(i->path);
+ strv_free(i->aliases);
+ strv_free(i->wanted_by);
+ strv_free(i->required_by);
+ strv_free(i->also);
+ free(i->default_instance);
+ free(i->symlink_target);
+ free(i);
+}
- STRV_FOREACH(i, files) {
- _cleanup_free_ char *path = NULL;
+static void install_context_done(InstallContext *c) {
+ assert(c);
- if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) {
- if (r == 0)
- r = -EINVAL;
- continue;
- }
+ c->will_process = ordered_hashmap_free_with_destructor(c->will_process, install_info_free);
+ c->have_processed = ordered_hashmap_free_with_destructor(c->have_processed, install_info_free);
+}
- path = path_make_absolute(*i, prefix);
- if (!path) {
- r = -ENOMEM;
- break;
- }
+static UnitFileInstallInfo *install_info_find(InstallContext *c, const char *name) {
+ UnitFileInstallInfo *i;
- if (symlink("/dev/null", path) >= 0) {
- unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null");
- continue;
- }
+ i = ordered_hashmap_get(c->have_processed, name);
+ if (i)
+ return i;
- if (errno == EEXIST) {
+ return ordered_hashmap_get(c->will_process, name);
+}
- if (null_or_empty_path(path) > 0)
- continue;
+static int install_info_may_process(
+ const UnitFileInstallInfo *i,
+ const LookupPaths *paths,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+ assert(i);
+ assert(paths);
- if (force) {
- if (symlink_atomic("/dev/null", path) >= 0) {
- unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
- unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null");
- continue;
- }
- }
+ /* Checks whether the loaded unit file is one we should process, or is masked,
+ * transient or generated and thus not subject to enable/disable operations. */
- if (r == 0)
- r = -EEXIST;
- } else {
- if (r == 0)
- r = -errno;
- }
+ if (i->type == UNIT_FILE_TYPE_MASKED) {
+ unit_file_changes_add(changes, n_changes, -ERFKILL, i->path, NULL);
+ return -ERFKILL;
+ }
+ if (path_is_generator(paths, i->path) ||
+ path_is_transient(paths, i->path)) {
+ unit_file_changes_add(changes, n_changes, -EADDRNOTAVAIL, i->path, NULL);
+ return -EADDRNOTAVAIL;
}
- return r;
+ return 0;
}
-int unit_file_unmask(
- UnitFileScope scope,
- bool runtime,
- const char *root_dir,
- char **files,
- UnitFileChange **changes,
- unsigned *n_changes) {
+/**
+ * Adds a new UnitFileInstallInfo entry under name in the InstallContext.will_process
+ * hashmap, or retrieves the existing one if already present.
+ *
+ * Returns negative on error, 0 if the unit was already known, 1 otherwise.
+ */
+static int install_info_add(
+ InstallContext *c,
+ const char *name,
+ const char *path,
+ bool auxiliary,
+ UnitFileInstallInfo **ret) {
- char **i, *config_path = NULL;
- int r, q;
- Set *remove_symlinks_to = NULL;
+ UnitFileInstallInfo *i = NULL;
+ int r;
- assert(scope >= 0);
- assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(c);
+ assert(name || path);
+
+ if (!name)
+ name = basename(path);
+
+ if (!unit_name_is_valid(name, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ i = install_info_find(c, name);
+ if (i) {
+ i->auxiliary = i->auxiliary && auxiliary;
+
+ if (ret)
+ *ret = i;
+ return 0;
+ }
- r = get_config_path(scope, runtime, root_dir, &config_path);
+ r = ordered_hashmap_ensure_allocated(&c->will_process, &string_hash_ops);
if (r < 0)
- goto finish;
+ return r;
- STRV_FOREACH(i, files) {
- _cleanup_free_ char *path = NULL;
+ i = new(UnitFileInstallInfo, 1);
+ if (!i)
+ return -ENOMEM;
- if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) {
- if (r == 0)
- r = -EINVAL;
- continue;
- }
+ *i = (UnitFileInstallInfo) {
+ .type = _UNIT_FILE_TYPE_INVALID,
+ .auxiliary = auxiliary,
+ };
- path = path_make_absolute(*i, config_path);
- if (!path) {
- r = -ENOMEM;
- break;
- }
+ i->name = strdup(name);
+ if (!i->name) {
+ r = -ENOMEM;
+ goto fail;
+ }
- q = null_or_empty_path(path);
- if (q > 0) {
- if (unlink(path) < 0)
- q = -errno;
- else {
- q = mark_symlink_for_removal(&remove_symlinks_to, path);
- unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
- }
+ if (path) {
+ i->path = strdup(path);
+ if (!i->path) {
+ r = -ENOMEM;
+ goto fail;
}
-
- if (q != -ENOENT && r == 0)
- r = q;
}
+ r = ordered_hashmap_put(c->will_process, i->name, i);
+ if (r < 0)
+ goto fail;
-finish:
- q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, files);
- if (r == 0)
- r = q;
+ if (ret)
+ *ret = i;
- set_free_free(remove_symlinks_to);
- free(config_path);
+ return 1;
+fail:
+ install_info_free(i);
return r;
}
-int unit_file_link(
- UnitFileScope scope,
- bool runtime,
- const char *root_dir,
- char **files,
- bool force,
- UnitFileChange **changes,
- unsigned *n_changes) {
-
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
- char **i;
- _cleanup_free_ char *config_path = NULL;
- int r, q;
-
- assert(scope >= 0);
- assert(scope < _UNIT_FILE_SCOPE_MAX);
-
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
- if (r < 0)
- return r;
-
- r = get_config_path(scope, runtime, root_dir, &config_path);
- if (r < 0)
- return r;
-
- STRV_FOREACH(i, files) {
- _cleanup_free_ char *path = NULL;
- char *fn;
- struct stat st;
-
- fn = basename(*i);
-
- if (!path_is_absolute(*i) ||
- !unit_name_is_valid(fn, UNIT_NAME_ANY)) {
- if (r == 0)
- r = -EINVAL;
- continue;
- }
-
- if (lstat(*i, &st) < 0) {
- if (r == 0)
- r = -errno;
- continue;
- }
-
- if (!S_ISREG(st.st_mode)) {
- r = -ENOENT;
- continue;
- }
-
- q = in_search_path(*i, paths.unit_path);
- if (q < 0)
- return q;
-
- if (q > 0)
- continue;
-
- path = path_make_absolute(fn, config_path);
- if (!path)
- return -ENOMEM;
-
- if (symlink(*i, path) >= 0) {
- unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, path, *i);
- continue;
- }
-
- if (errno == EEXIST) {
- _cleanup_free_ char *dest = NULL;
-
- q = readlink_and_make_absolute(path, &dest);
- if (q < 0 && errno != ENOENT) {
- if (r == 0)
- r = q;
- continue;
- }
-
- if (q >= 0 && path_equal(dest, *i))
- continue;
-
- if (force) {
- if (symlink_atomic(*i, path) >= 0) {
- unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
- unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, path, *i);
- continue;
- }
- }
-
- if (r == 0)
- r = -EEXIST;
- } else {
- if (r == 0)
- r = -errno;
- }
- }
-
- return r;
-}
-
-void unit_file_list_free(Hashmap *h) {
- UnitFileList *i;
-
- while ((i = hashmap_steal_first(h))) {
- free(i->path);
- free(i);
- }
-
- hashmap_free(h);
-}
-
-int unit_file_changes_add(
- UnitFileChange **changes,
- unsigned *n_changes,
- UnitFileChangeType type,
- const char *path,
- const char *source) {
-
- UnitFileChange *c;
- unsigned i;
-
- assert(path);
- assert(!changes == !n_changes);
-
- if (!changes)
- return 0;
-
- c = realloc(*changes, (*n_changes + 1) * sizeof(UnitFileChange));
- if (!c)
- return -ENOMEM;
-
- *changes = c;
- i = *n_changes;
-
- c[i].type = type;
- c[i].path = strdup(path);
- if (!c[i].path)
- return -ENOMEM;
-
- path_kill_slashes(c[i].path);
-
- if (source) {
- c[i].source = strdup(source);
- if (!c[i].source) {
- free(c[i].path);
- return -ENOMEM;
- }
-
- path_kill_slashes(c[i].path);
- } else
- c[i].source = NULL;
-
- *n_changes = i+1;
- return 0;
-}
-
-void unit_file_changes_free(UnitFileChange *changes, unsigned n_changes) {
- unsigned i;
-
- assert(changes || n_changes == 0);
-
- if (!changes)
- return;
-
- for (i = 0; i < n_changes; i++) {
- free(changes[i].path);
- free(changes[i].source);
- }
-
- free(changes);
-}
-
-static void install_info_free(UnitFileInstallInfo *i) {
- assert(i);
-
- free(i->name);
- free(i->path);
- strv_free(i->aliases);
- strv_free(i->wanted_by);
- strv_free(i->required_by);
- strv_free(i->also);
- free(i->default_instance);
- free(i);
-}
-
-static void install_info_hashmap_free(OrderedHashmap *m) {
- UnitFileInstallInfo *i;
-
- if (!m)
- return;
-
- while ((i = ordered_hashmap_steal_first(m)))
- install_info_free(i);
-
- ordered_hashmap_free(m);
-}
-
-static void install_context_done(InstallContext *c) {
- assert(c);
-
- install_info_hashmap_free(c->will_install);
- install_info_hashmap_free(c->have_installed);
-
- c->will_install = c->have_installed = NULL;
-}
-
-static int install_info_add(
- InstallContext *c,
- const char *name,
- const char *path) {
- UnitFileInstallInfo *i = NULL;
- int r;
-
- assert(c);
- assert(name || path);
-
- if (!name)
- name = basename(path);
-
- if (!unit_name_is_valid(name, UNIT_NAME_ANY))
- return -EINVAL;
-
- if (ordered_hashmap_get(c->have_installed, name) ||
- ordered_hashmap_get(c->will_install, name))
- return 0;
-
- r = ordered_hashmap_ensure_allocated(&c->will_install, &string_hash_ops);
- if (r < 0)
- return r;
-
- i = new0(UnitFileInstallInfo, 1);
- if (!i)
- return -ENOMEM;
-
- i->name = strdup(name);
- if (!i->name) {
- r = -ENOMEM;
- goto fail;
- }
-
- if (path) {
- i->path = strdup(path);
- if (!i->path) {
- r = -ENOMEM;
- goto fail;
- }
- }
-
- r = ordered_hashmap_put(c->will_install, i->name, i);
- if (r < 0)
- goto fail;
-
- return 0;
-
-fail:
- if (i)
- install_info_free(i);
-
- return r;
-}
-
-static int install_info_add_auto(
- InstallContext *c,
- const char *name_or_path) {
-
- assert(c);
- assert(name_or_path);
-
- if (path_is_absolute(name_or_path))
- return install_info_add(c, NULL, name_or_path);
- else
- return install_info_add(c, name_or_path, NULL);
-}
-
-static int config_parse_also(
+static int config_parse_alias(
const char *unit,
const char *filename,
unsigned line,
void *data,
void *userdata) {
- size_t l;
- const char *word, *state;
- InstallContext *c = data;
- UnitFileInstallInfo *i = userdata;
+ UnitType type;
+ assert(unit);
assert(filename);
assert(lvalue);
assert(rvalue);
- FOREACH_WORD_QUOTED(word, l, rvalue, state) {
- _cleanup_free_ char *n;
- int r;
-
- n = strndup(word, l);
- if (!n)
- return -ENOMEM;
-
- r = install_info_add(c, n, NULL);
- if (r < 0)
- return r;
-
- r = strv_extend(&i->also, n);
- if (r < 0)
- return r;
- }
- if (!isempty(state))
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Trailing garbage, ignoring.");
+ type = unit_name_to_type(unit);
+ if (!unit_type_may_alias(type))
+ return log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Alias= is not allowed for %s units, ignoring.",
+ unit_type_to_string(type));
- return 0;
+ return config_parse_strv(unit, filename, line, section, section_line,
+ lvalue, ltype, rvalue, data, userdata);
}
-static int config_parse_user(
+static int config_parse_also(
const char *unit,
const char *filename,
unsigned line,
void *data,
void *userdata) {
- UnitFileInstallInfo *i = data;
- char *printed;
+ UnitFileInstallInfo *info = userdata, *alsoinfo = NULL;
+ InstallContext *c = data;
int r;
+ assert(unit);
assert(filename);
assert(lvalue);
assert(rvalue);
- r = install_full_printf(i, rvalue, &printed);
- if (r < 0)
- return r;
+ for (;;) {
+ _cleanup_free_ char *word = NULL, *printed = NULL;
+
+ r = extract_first_word(&rvalue, &word, NULL, 0);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ break;
+
+ r = install_full_printf(info, word, &printed);
+ if (r < 0)
+ return r;
+
+ if (!unit_name_is_valid(printed, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ r = install_info_add(c, printed, NULL, true, &alsoinfo);
+ if (r < 0)
+ return r;
+
+ r = strv_push(&info->also, printed);
+ if (r < 0)
+ return r;
- free(i->user);
- i->user = printed;
+ printed = NULL;
+ }
return 0;
}
void *userdata) {
UnitFileInstallInfo *i = data;
- char *printed;
+ _cleanup_free_ char *printed = NULL;
int r;
+ assert(unit);
assert(filename);
assert(lvalue);
assert(rvalue);
+ if (unit_name_is_valid(unit, UNIT_NAME_INSTANCE))
+ /* When enabling an instance, we might be using a template unit file,
+ * but we should ignore DefaultInstance silently. */
+ return 0;
+ if (!unit_name_is_valid(unit, UNIT_NAME_TEMPLATE))
+ return log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "DefaultInstance= only makes sense for template units, ignoring.");
+
r = install_full_printf(i, rvalue, &printed);
if (r < 0)
return r;
- if (!unit_instance_is_valid(printed)) {
- free(printed);
+ if (!unit_instance_is_valid(printed))
return -EINVAL;
- }
- free(i->default_instance);
- i->default_instance = printed;
-
- return 0;
+ return free_and_replace(i->default_instance, printed);
}
static int unit_file_load(
UnitFileInstallInfo *info,
const char *path,
const char *root_dir,
- bool allow_symlink,
- bool load,
- bool *also) {
+ SearchFlags flags) {
const ConfigTableItem items[] = {
- { "Install", "Alias", config_parse_strv, 0, &info->aliases },
+ { "Install", "Alias", config_parse_alias, 0, &info->aliases },
{ "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by },
{ "Install", "RequiredBy", config_parse_strv, 0, &info->required_by },
{ "Install", "DefaultInstance", config_parse_default_instance, 0, info },
{ "Install", "Also", config_parse_also, 0, c },
- { "Exec", "User", config_parse_user, 0, info },
{}
};
+ UnitType type;
_cleanup_fclose_ FILE *f = NULL;
- int fd, r;
+ _cleanup_close_ int fd = -1;
+ struct stat st;
+ int r;
- assert(c);
assert(info);
assert(path);
- if (!isempty(root_dir))
- path = strjoina(root_dir, "/", path);
+ if (!(flags & SEARCH_DROPIN)) {
+ /* Loading or checking for the main unit file… */
- if (!load) {
- r = access(path, F_OK) ? -errno : 0;
- return r;
+ type = unit_name_to_type(info->name);
+ if (type < 0)
+ return -EINVAL;
+ if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE|UNIT_NAME_INSTANCE) && !unit_type_may_template(type))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Unit type %s cannot be templated.", unit_type_to_string(type));
+
+ if (!(flags & SEARCH_LOAD)) {
+ r = lstat(path, &st);
+ if (r < 0)
+ return -errno;
+
+ if (null_or_empty(&st))
+ info->type = UNIT_FILE_TYPE_MASKED;
+ else if (S_ISREG(st.st_mode))
+ info->type = UNIT_FILE_TYPE_REGULAR;
+ else if (S_ISLNK(st.st_mode))
+ return -ELOOP;
+ else if (S_ISDIR(st.st_mode))
+ return -EISDIR;
+ else
+ return -ENOTTY;
+
+ return 0;
+ }
+
+ fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
+ if (fd < 0)
+ return -errno;
+ } else {
+ /* Operating on a drop-in file. If we aren't supposed to load the unit file drop-ins don't matter, let's hence shortcut this. */
+
+ if (!(flags & SEARCH_LOAD))
+ return 0;
+
+ fd = chase_symlinks_and_open(path, root_dir, 0, O_RDONLY|O_CLOEXEC|O_NOCTTY, NULL);
+ if (fd < 0)
+ return fd;
}
- fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|(allow_symlink ? 0 : O_NOFOLLOW));
- if (fd < 0)
+ if (fstat(fd, &st) < 0)
return -errno;
- f = fdopen(fd, "re");
- if (!f) {
- safe_close(fd);
- return -ENOMEM;
+ if (null_or_empty(&st)) {
+ if ((flags & SEARCH_DROPIN) == 0)
+ info->type = UNIT_FILE_TYPE_MASKED;
+
+ return 0;
}
- r = config_parse(NULL, path, f,
- NULL,
- config_item_table_lookup, items,
- true, true, false, info);
+ r = stat_verify_regular(&st);
if (r < 0)
return r;
- if (also)
- *also = !strv_isempty(info->also);
+ f = fdopen(fd, "r");
+ if (!f)
+ return -errno;
+ fd = -1;
+
+ /* c is only needed if we actually load the file (it's referenced from items[] btw, in case you wonder.) */
+ assert(c);
+
+ r = config_parse(info->name, path, f,
+ NULL,
+ config_item_table_lookup, items,
+ CONFIG_PARSE_RELAXED|CONFIG_PARSE_ALLOW_INCLUDE, info);
+ if (r < 0)
+ return log_debug_errno(r, "Failed to parse %s: %m", info->name);
+
+ if ((flags & SEARCH_DROPIN) == 0)
+ info->type = UNIT_FILE_TYPE_REGULAR;
return
(int) strv_length(info->aliases) +
(int) strv_length(info->required_by);
}
+static int unit_file_load_or_readlink(
+ InstallContext *c,
+ UnitFileInstallInfo *info,
+ const char *path,
+ const char *root_dir,
+ SearchFlags flags) {
+
+ _cleanup_free_ char *target = NULL;
+ int r;
+
+ r = unit_file_load(c, info, path, root_dir, flags);
+ if (r != -ELOOP || (flags & SEARCH_DROPIN))
+ return r;
+
+ /* This is a symlink, let's read it. */
+
+ r = readlink_malloc(path, &target);
+ if (r < 0)
+ return r;
+
+ if (path_equal(target, "/dev/null"))
+ info->type = UNIT_FILE_TYPE_MASKED;
+ else {
+ const char *bn;
+ UnitType a, b;
+
+ bn = basename(target);
+
+ if (unit_name_is_valid(info->name, UNIT_NAME_PLAIN)) {
+
+ if (!unit_name_is_valid(bn, UNIT_NAME_PLAIN))
+ return -EINVAL;
+
+ } else if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) {
+
+ if (!unit_name_is_valid(bn, UNIT_NAME_INSTANCE|UNIT_NAME_TEMPLATE))
+ return -EINVAL;
+
+ } else if (unit_name_is_valid(info->name, UNIT_NAME_TEMPLATE)) {
+
+ if (!unit_name_is_valid(bn, UNIT_NAME_TEMPLATE))
+ return -EINVAL;
+ } else
+ return -EINVAL;
+
+ /* Enforce that the symlink destination does not
+ * change the unit file type. */
+
+ a = unit_name_to_type(info->name);
+ b = unit_name_to_type(bn);
+ if (a < 0 || b < 0 || a != b)
+ return -EINVAL;
+
+ if (path_is_absolute(target))
+ /* This is an absolute path, prefix the root so that we always deal with fully qualified paths */
+ info->symlink_target = prefix_root(root_dir, target);
+ else
+ /* This is a relative path, take it relative to the dir the symlink is located in. */
+ info->symlink_target = file_in_same_dir(path, target);
+ if (!info->symlink_target)
+ return -ENOMEM;
+
+ info->type = UNIT_FILE_TYPE_SYMLINK;
+ }
+
+ return 0;
+}
+
static int unit_file_search(
InstallContext *c,
UnitFileInstallInfo *info,
const LookupPaths *paths,
- const char *root_dir,
- bool allow_symlink,
- bool load,
- bool *also) {
+ SearchFlags flags) {
+ const char *dropin_dir_name = NULL, *dropin_template_dir_name = NULL;
+ _cleanup_strv_free_ char **dirs = NULL, **files = NULL;
+ _cleanup_free_ char *template = NULL;
+ bool found_unit = false;
+ int r, result;
char **p;
- int r;
- assert(c);
assert(info);
assert(paths);
+ /* Was this unit already loaded? */
+ if (info->type != _UNIT_FILE_TYPE_INVALID)
+ return 0;
+
if (info->path)
- return unit_file_load(c, info, info->path, root_dir, allow_symlink, load, also);
+ return unit_file_load_or_readlink(c, info, info->path, paths->root_dir, flags);
assert(info->name);
- STRV_FOREACH(p, paths->unit_path) {
+ if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) {
+ r = unit_name_template(info->name, &template);
+ if (r < 0)
+ return r;
+ }
+
+ STRV_FOREACH(p, paths->search_path) {
_cleanup_free_ char *path = NULL;
- path = strjoin(*p, "/", info->name, NULL);
+ path = strjoin(*p, "/", info->name);
if (!path)
return -ENOMEM;
- r = unit_file_load(c, info, path, root_dir, allow_symlink, load, also);
+ r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags);
if (r >= 0) {
- info->path = path;
- path = NULL;
- return r;
- }
- if (r != -ENOENT && r != -ELOOP)
+ info->path = TAKE_PTR(path);
+ result = r;
+ found_unit = true;
+ break;
+ } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES))
return r;
}
- if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) {
+ if (!found_unit && template) {
/* Unit file doesn't exist, however instance
* enablement was requested. We will check if it is
* possible to load template unit file. */
- _cleanup_free_ char *template = NULL;
+ STRV_FOREACH(p, paths->search_path) {
+ _cleanup_free_ char *path = NULL;
- r = unit_name_template(info->name, &template);
+ path = strjoin(*p, "/", template);
+ if (!path)
+ return -ENOMEM;
+
+ r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags);
+ if (r >= 0) {
+ info->path = TAKE_PTR(path);
+ result = r;
+ found_unit = true;
+ break;
+ } else if (!IN_SET(r, -ENOENT, -ENOTDIR, -EACCES))
+ return r;
+ }
+ }
+
+ if (!found_unit)
+ return log_debug_errno(SYNTHETIC_ERRNO(ENOENT),
+ "Cannot find unit %s%s%s.",
+ info->name, template ? " or " : "", strempty(template));
+
+ if (info->type == UNIT_FILE_TYPE_MASKED)
+ return result;
+
+ /* Search for drop-in directories */
+
+ dropin_dir_name = strjoina(info->name, ".d");
+ STRV_FOREACH(p, paths->search_path) {
+ char *path;
+
+ path = path_join(*p, dropin_dir_name);
+ if (!path)
+ return -ENOMEM;
+
+ r = strv_consume(&dirs, path);
if (r < 0)
return r;
+ }
- STRV_FOREACH(p, paths->unit_path) {
- _cleanup_free_ char *path = NULL;
+ if (template) {
+ dropin_template_dir_name = strjoina(template, ".d");
+ STRV_FOREACH(p, paths->search_path) {
+ char *path;
- path = strjoin(*p, "/", template, NULL);
+ path = path_join(*p, dropin_template_dir_name);
if (!path)
return -ENOMEM;
- r = unit_file_load(c, info, path, root_dir, allow_symlink, load, also);
- if (r >= 0) {
- info->path = path;
- path = NULL;
- return r;
- }
- if (r != -ENOENT && r != -ELOOP)
+ r = strv_consume(&dirs, path);
+ if (r < 0)
return r;
}
}
- return -ENOENT;
+ /* Load drop-in conf files */
+
+ r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char**) dirs);
+ if (r < 0)
+ return log_debug_errno(r, "Failed to get list of conf files: %m");
+
+ STRV_FOREACH(p, files) {
+ r = unit_file_load_or_readlink(c, info, *p, paths->root_dir, flags | SEARCH_DROPIN);
+ if (r < 0)
+ return log_debug_errno(r, "Failed to load conf file %s: %m", *p);
+ }
+
+ return result;
}
-static int unit_file_can_install(
- const LookupPaths *paths,
+static int install_info_follow(
+ InstallContext *c,
+ UnitFileInstallInfo *i,
const char *root_dir,
- const char *name,
- bool allow_symlink,
- bool *also) {
+ SearchFlags flags,
+ bool ignore_different_name) {
+
+ assert(c);
+ assert(i);
+
+ if (i->type != UNIT_FILE_TYPE_SYMLINK)
+ return -EINVAL;
+ if (!i->symlink_target)
+ return -EINVAL;
+
+ /* If the basename doesn't match, the caller should add a
+ * complete new entry for this. */
+
+ if (!ignore_different_name && !streq(basename(i->symlink_target), i->name))
+ return -EXDEV;
+
+ free_and_replace(i->path, i->symlink_target);
+ i->type = _UNIT_FILE_TYPE_INVALID;
+
+ return unit_file_load_or_readlink(c, i, i->path, root_dir, flags);
+}
+
+/**
+ * Search for the unit file. If the unit name is a symlink, follow the symlink to the
+ * target, maybe more than once. Propagate the instance name if present.
+ */
+static int install_info_traverse(
+ UnitFileScope scope,
+ InstallContext *c,
+ const LookupPaths *paths,
+ UnitFileInstallInfo *start,
+ SearchFlags flags,
+ UnitFileInstallInfo **ret) {
- _cleanup_(install_context_done) InstallContext c = {};
UnitFileInstallInfo *i;
+ unsigned k = 0;
int r;
assert(paths);
- assert(name);
+ assert(start);
+ assert(c);
- r = install_info_add_auto(&c, name);
+ r = unit_file_search(c, start, paths, flags);
if (r < 0)
return r;
- assert_se(i = ordered_hashmap_first(c.will_install));
+ i = start;
+ while (i->type == UNIT_FILE_TYPE_SYMLINK) {
+ /* Follow the symlink */
- r = unit_file_search(&c, i, paths, root_dir, allow_symlink, true, also);
+ if (++k > UNIT_FILE_FOLLOW_SYMLINK_MAX)
+ return -ELOOP;
- if (r >= 0)
- r =
- (int) strv_length(i->aliases) +
- (int) strv_length(i->wanted_by) +
- (int) strv_length(i->required_by);
+ if (!(flags & SEARCH_FOLLOW_CONFIG_SYMLINKS)) {
+ r = path_is_config(paths, i->path, true);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ return -ELOOP;
+ }
- return r;
-}
+ r = install_info_follow(c, i, paths->root_dir, flags, false);
+ if (r == -EXDEV) {
+ _cleanup_free_ char *buffer = NULL;
+ const char *bn;
-static int create_symlink(
- const char *old_path,
- const char *new_path,
- bool force,
- UnitFileChange **changes,
- unsigned *n_changes) {
+ /* Target has a different name, create a new
+ * install info object for that, and continue
+ * with that. */
- _cleanup_free_ char *dest = NULL;
- int r;
+ bn = basename(i->symlink_target);
- assert(old_path);
- assert(new_path);
+ if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) &&
+ unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) {
- mkdir_parents_label(new_path, 0755);
+ _cleanup_free_ char *instance = NULL;
- if (symlink(old_path, new_path) >= 0) {
- unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
- return 0;
+ r = unit_name_to_instance(i->name, &instance);
+ if (r < 0)
+ return r;
+
+ r = unit_name_replace_instance(bn, instance, &buffer);
+ if (r < 0)
+ return r;
+
+ if (streq(buffer, i->name)) {
+
+ /* We filled in the instance, and the target stayed the same? If so, then let's
+ * honour the link as it is. */
+
+ r = install_info_follow(c, i, paths->root_dir, flags, true);
+ if (r < 0)
+ return r;
+
+ continue;
+ }
+
+ bn = buffer;
+ }
+
+ r = install_info_add(c, bn, NULL, false, &i);
+ if (r < 0)
+ return r;
+
+ /* Try again, with the new target we found. */
+ r = unit_file_search(c, i, paths, flags);
+ if (r == -ENOENT)
+ /* Translate error code to highlight this specific case */
+ return -ENOLINK;
+ }
+
+ if (r < 0)
+ return r;
}
- if (errno != EEXIST)
- return -errno;
+ if (ret)
+ *ret = i;
+
+ return 0;
+}
+
+/**
+ * Call install_info_add() with name_or_path as the path (if name_or_path starts with "/")
+ * or the name (otherwise). root_dir is prepended to the path.
+ */
+static int install_info_add_auto(
+ InstallContext *c,
+ const LookupPaths *paths,
+ const char *name_or_path,
+ UnitFileInstallInfo **ret) {
+
+ assert(c);
+ assert(name_or_path);
+
+ if (path_is_absolute(name_or_path)) {
+ const char *pp;
+
+ pp = prefix_roota(paths->root_dir, name_or_path);
+
+ return install_info_add(c, NULL, pp, false, ret);
+ } else
+ return install_info_add(c, name_or_path, NULL, false, ret);
+}
+
+static int install_info_discover(
+ UnitFileScope scope,
+ InstallContext *c,
+ const LookupPaths *paths,
+ const char *name,
+ SearchFlags flags,
+ UnitFileInstallInfo **ret,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ UnitFileInstallInfo *i;
+ int r;
+
+ assert(c);
+ assert(paths);
+ assert(name);
+
+ r = install_info_add_auto(c, paths, name, &i);
+ if (r >= 0)
+ r = install_info_traverse(scope, c, paths, i, flags, ret);
- r = readlink_and_make_absolute(new_path, &dest);
if (r < 0)
- return r;
+ unit_file_changes_add(changes, n_changes, r, name, NULL);
+ return r;
+}
- if (path_equal(dest, old_path))
- return 0;
+static int install_info_discover_and_check(
+ UnitFileScope scope,
+ InstallContext *c,
+ const LookupPaths *paths,
+ const char *name,
+ SearchFlags flags,
+ UnitFileInstallInfo **ret,
+ UnitFileChange **changes,
+ size_t *n_changes) {
- if (!force)
- return -EEXIST;
+ int r;
- r = symlink_atomic(old_path, new_path);
+ r = install_info_discover(scope, c, paths, name, flags, ret, changes, n_changes);
if (r < 0)
return r;
- unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL);
- unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
-
- return 0;
+ return install_info_may_process(ret ? *ret : NULL, paths, changes, n_changes);
}
static int install_info_symlink_alias(
UnitFileInstallInfo *i,
+ const LookupPaths *paths,
const char *config_path,
bool force,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
char **s;
int r = 0, q;
assert(i);
+ assert(paths);
assert(config_path);
STRV_FOREACH(s, i->aliases) {
if (!alias_path)
return -ENOMEM;
- q = create_symlink(i->path, alias_path, force, changes, n_changes);
+ q = create_symlink(paths, i->path, alias_path, force, changes, n_changes);
if (r == 0)
r = q;
}
static int install_info_symlink_wants(
UnitFileInstallInfo *i,
+ const LookupPaths *paths,
const char *config_path,
char **list,
const char *suffix,
- bool force,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
_cleanup_free_ char *buf = NULL;
const char *n;
int r = 0, q;
assert(i);
+ assert(paths);
assert(config_path);
- if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) {
+ if (strv_isempty(list))
+ return 0;
- /* Don't install any symlink if there's no default
- * instance configured */
+ if (unit_name_is_valid(i->name, UNIT_NAME_TEMPLATE)) {
+ UnitFileInstallInfo instance = {
+ .type = _UNIT_FILE_TYPE_INVALID,
+ };
+ _cleanup_free_ char *path = NULL;
+ /* If this is a template, and we have no instance, don't do anything */
if (!i->default_instance)
- return 0;
+ return 1;
r = unit_name_replace_instance(i->name, i->default_instance, &buf);
if (r < 0)
return r;
+ instance.name = buf;
+ r = unit_file_search(NULL, &instance, paths, SEARCH_FOLLOW_CONFIG_SYMLINKS);
+ if (r < 0)
+ return r;
+
+ path = TAKE_PTR(instance.path);
+
+ if (instance.type == UNIT_FILE_TYPE_MASKED) {
+ unit_file_changes_add(changes, n_changes, -ERFKILL, path, NULL);
+ return -ERFKILL;
+ }
+
n = buf;
} else
n = i->name;
continue;
}
- path = strjoin(config_path, "/", dst, suffix, n, NULL);
+ path = strjoin(config_path, "/", dst, suffix, n);
if (!path)
return -ENOMEM;
- q = create_symlink(i->path, path, force, changes, n_changes);
+ q = create_symlink(paths, i->path, path, true, changes, n_changes);
if (r == 0)
r = q;
}
UnitFileInstallInfo *i,
const LookupPaths *paths,
const char *config_path,
- const char *root_dir,
bool force,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
_cleanup_free_ char *path = NULL;
int r;
assert(config_path);
assert(i->path);
- r = in_search_path(i->path, paths->unit_path);
- if (r != 0)
+ r = in_search_path(paths, i->path);
+ if (r < 0)
return r;
+ if (r > 0)
+ return 0;
- path = strjoin(config_path, "/", i->name, NULL);
+ path = strjoin(config_path, "/", i->name);
if (!path)
return -ENOMEM;
- return create_symlink(i->path, path, force, changes, n_changes);
+ return create_symlink(paths, i->path, path, force, changes, n_changes);
}
static int install_info_apply(
UnitFileInstallInfo *i,
const LookupPaths *paths,
const char *config_path,
- const char *root_dir,
bool force,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
int r, q;
assert(paths);
assert(config_path);
- r = install_info_symlink_alias(i, config_path, force, changes, n_changes);
+ if (i->type != UNIT_FILE_TYPE_REGULAR)
+ return 0;
+
+ r = install_info_symlink_alias(i, paths, config_path, force, changes, n_changes);
- q = install_info_symlink_wants(i, config_path, i->wanted_by, ".wants/", force, changes, n_changes);
+ q = install_info_symlink_wants(i, paths, config_path, i->wanted_by, ".wants/", changes, n_changes);
if (r == 0)
r = q;
- q = install_info_symlink_wants(i, config_path, i->required_by, ".requires/", force, changes, n_changes);
+ q = install_info_symlink_wants(i, paths, config_path, i->required_by, ".requires/", changes, n_changes);
if (r == 0)
r = q;
- q = install_info_symlink_link(i, paths, config_path, root_dir, force, changes, n_changes);
- if (r == 0)
- r = q;
+ q = install_info_symlink_link(i, paths, config_path, force, changes, n_changes);
+ /* Do not count links to the unit file towards the "carries_install_info" count */
+ if (r == 0 && q < 0)
+ r = q;
+
+ return r;
+}
+
+static int install_context_apply(
+ UnitFileScope scope,
+ InstallContext *c,
+ const LookupPaths *paths,
+ const char *config_path,
+ bool force,
+ SearchFlags flags,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ UnitFileInstallInfo *i;
+ int r;
+
+ assert(c);
+ assert(paths);
+ assert(config_path);
+
+ if (ordered_hashmap_isempty(c->will_process))
+ return 0;
+
+ r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = 0;
+ while ((i = ordered_hashmap_first(c->will_process))) {
+ int q;
+
+ q = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name);
+ if (q < 0)
+ return q;
+
+ q = install_info_traverse(scope, c, paths, i, flags, NULL);
+ if (q < 0) {
+ unit_file_changes_add(changes, n_changes, r, i->name, NULL);
+ return q;
+ }
+
+ /* We can attempt to process a masked unit when a different unit
+ * that we were processing specifies it in Also=. */
+ if (i->type == UNIT_FILE_TYPE_MASKED) {
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path, NULL);
+ if (r >= 0)
+ /* Assume that something *could* have been enabled here,
+ * avoid "empty [Install] section" warning. */
+ r += 1;
+ continue;
+ }
+
+ if (i->type != UNIT_FILE_TYPE_REGULAR)
+ continue;
+
+ q = install_info_apply(i, paths, config_path, force, changes, n_changes);
+ if (r >= 0) {
+ if (q < 0)
+ r = q;
+ else
+ r += q;
+ }
+ }
+
+ return r;
+}
+
+static int install_context_mark_for_removal(
+ UnitFileScope scope,
+ InstallContext *c,
+ const LookupPaths *paths,
+ Set **remove_symlinks_to,
+ const char *config_path,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ UnitFileInstallInfo *i;
+ int r;
+
+ assert(c);
+ assert(paths);
+ assert(config_path);
+
+ /* Marks all items for removal */
+
+ if (ordered_hashmap_isempty(c->will_process))
+ return 0;
+
+ r = ordered_hashmap_ensure_allocated(&c->have_processed, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ while ((i = ordered_hashmap_first(c->will_process))) {
+
+ r = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name);
+ if (r < 0)
+ return r;
+
+ r = install_info_traverse(scope, c, paths, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL);
+ if (r == -ENOLINK) {
+ log_debug_errno(r, "Name %s leads to a dangling symlink, removing name.", i->name);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_DANGLING, i->path ?: i->name, NULL);
+ } else if (r == -ENOENT) {
+
+ if (i->auxiliary) /* some unit specified in Also= or similar is missing */
+ log_debug_errno(r, "Auxiliary unit of %s not found, removing name.", i->name);
+ else {
+ log_debug_errno(r, "Unit %s not found, removing name.", i->name);
+ unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL);
+ }
+
+ } else if (r < 0) {
+ log_debug_errno(r, "Failed to find unit %s, removing name: %m", i->name);
+ unit_file_changes_add(changes, n_changes, r, i->path ?: i->name, NULL);
+ } else if (i->type == UNIT_FILE_TYPE_MASKED) {
+ log_debug("Unit file %s is masked, ignoring.", i->name);
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_IS_MASKED, i->path ?: i->name, NULL);
+ continue;
+ } else if (i->type != UNIT_FILE_TYPE_REGULAR) {
+ log_debug("Unit %s has type %s, ignoring.", i->name, unit_file_type_to_string(i->type) ?: "invalid");
+ continue;
+ }
+
+ r = mark_symlink_for_removal(remove_symlinks_to, i->name);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+int unit_file_mask(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
+ const char *config_path;
+ char **i;
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
+ if (r < 0)
+ return r;
+
+ config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
+ if (!config_path)
+ return -ENXIO;
+
+ STRV_FOREACH(i, files) {
+ _cleanup_free_ char *path = NULL;
+ int q;
+
+ if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) {
+ if (r == 0)
+ r = -EINVAL;
+ continue;
+ }
+
+ path = path_make_absolute(*i, config_path);
+ if (!path)
+ return -ENOMEM;
+
+ q = create_symlink(&paths, "/dev/null", path, !!(flags & UNIT_FILE_FORCE), changes, n_changes);
+ if (q < 0 && r >= 0)
+ r = q;
+ }
+
+ return r;
+}
+
+int unit_file_unmask(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
+ _cleanup_set_free_free_ Set *remove_symlinks_to = NULL;
+ _cleanup_strv_free_ char **todo = NULL;
+ size_t n_todo = 0, n_allocated = 0;
+ const char *config_path;
+ char **i;
+ bool dry_run;
+ int r, q;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
+ if (r < 0)
+ return r;
+
+ config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
+ if (!config_path)
+ return -ENXIO;
+
+ dry_run = !!(flags & UNIT_FILE_DRY_RUN);
+
+ STRV_FOREACH(i, files) {
+ _cleanup_free_ char *path = NULL;
+
+ if (!unit_name_is_valid(*i, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ path = path_make_absolute(*i, config_path);
+ if (!path)
+ return -ENOMEM;
+
+ r = null_or_empty_path(path);
+ if (r == -ENOENT)
+ continue;
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+
+ if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2))
+ return -ENOMEM;
+
+ todo[n_todo] = strdup(*i);
+ if (!todo[n_todo])
+ return -ENOMEM;
+
+ n_todo++;
+ }
+
+ strv_uniq(todo);
+
+ r = 0;
+ STRV_FOREACH(i, todo) {
+ _cleanup_free_ char *path = NULL;
+ const char *rp;
+
+ path = path_make_absolute(*i, config_path);
+ if (!path)
+ return -ENOMEM;
+
+ if (!dry_run && unlink(path) < 0) {
+ if (errno != ENOENT) {
+ if (r >= 0)
+ r = -errno;
+ unit_file_changes_add(changes, n_changes, -errno, path, NULL);
+ }
+
+ continue;
+ }
+
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
+
+ rp = skip_root(&paths, path);
+ q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: path);
+ if (q < 0)
+ return q;
+ }
+
+ q = remove_marked_symlinks(remove_symlinks_to, config_path, &paths, dry_run, changes, n_changes);
+ if (r >= 0)
+ r = q;
+
+ return r;
+}
+
+int unit_file_link(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
+ _cleanup_strv_free_ char **todo = NULL;
+ size_t n_todo = 0, n_allocated = 0;
+ const char *config_path;
+ char **i;
+ int r, q;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
+ if (r < 0)
+ return r;
+
+ config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
+ if (!config_path)
+ return -ENXIO;
+
+ STRV_FOREACH(i, files) {
+ _cleanup_free_ char *full = NULL;
+ struct stat st;
+ char *fn;
+
+ if (!path_is_absolute(*i))
+ return -EINVAL;
+
+ fn = basename(*i);
+ if (!unit_name_is_valid(fn, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ full = prefix_root(paths.root_dir, *i);
+ if (!full)
+ return -ENOMEM;
+
+ if (lstat(full, &st) < 0)
+ return -errno;
+ r = stat_verify_regular(&st);
+ if (r < 0)
+ return r;
+
+ q = in_search_path(&paths, *i);
+ if (q < 0)
+ return q;
+ if (q > 0)
+ continue;
+
+ if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2))
+ return -ENOMEM;
+
+ todo[n_todo] = strdup(*i);
+ if (!todo[n_todo])
+ return -ENOMEM;
+
+ n_todo++;
+ }
+
+ strv_uniq(todo);
+
+ r = 0;
+ STRV_FOREACH(i, todo) {
+ _cleanup_free_ char *new_path = NULL;
+
+ new_path = path_make_absolute(basename(*i), config_path);
+ if (!new_path)
+ return -ENOMEM;
+
+ q = create_symlink(&paths, *i, new_path, !!(flags & UNIT_FILE_FORCE), changes, n_changes);
+ if (q < 0 && r >= 0)
+ r = q;
+ }
+
+ return r;
+}
+
+static int path_shall_revert(const LookupPaths *paths, const char *path) {
+ int r;
+
+ assert(paths);
+ assert(path);
+
+ /* Checks whether the path is one where the drop-in directories shall be removed. */
+
+ r = path_is_config(paths, path, true);
+ if (r != 0)
+ return r;
+
+ r = path_is_control(paths, path);
+ if (r != 0)
+ return r;
- return r;
+ return path_is_transient(paths, path);
}
-static int install_context_apply(
- InstallContext *c,
- const LookupPaths *paths,
- const char *config_path,
+int unit_file_revert(
+ UnitFileScope scope,
const char *root_dir,
- bool force,
+ char **files,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
- UnitFileInstallInfo *i;
+ _cleanup_set_free_free_ Set *remove_symlinks_to = NULL;
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
+ _cleanup_strv_free_ char **todo = NULL;
+ size_t n_todo = 0, n_allocated = 0;
+ char **i;
int r, q;
- assert(c);
- assert(paths);
- assert(config_path);
+ /* Puts a unit file back into vendor state. This means:
+ *
+ * a) we remove all drop-in snippets added by the user ("config"), add to transient units ("transient"), and
+ * added via "systemctl set-property" ("control"), but not if the drop-in is generated ("generated").
+ *
+ * c) if there's a vendor unit file (i.e. one in /usr) we remove any configured overriding unit files (i.e. in
+ * "config", but not in "transient" or "control" or even "generated").
+ *
+ * We remove all that in both the runtime and the persistent directories, if that applies.
+ */
+
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
+ if (r < 0)
+ return r;
- if (!ordered_hashmap_isempty(c->will_install)) {
- r = ordered_hashmap_ensure_allocated(&c->have_installed, &string_hash_ops);
- if (r < 0)
- return r;
+ STRV_FOREACH(i, files) {
+ bool has_vendor = false;
+ char **p;
- r = ordered_hashmap_reserve(c->have_installed, ordered_hashmap_size(c->will_install));
- if (r < 0)
- return r;
- }
+ if (!unit_name_is_valid(*i, UNIT_NAME_ANY))
+ return -EINVAL;
- r = 0;
- while ((i = ordered_hashmap_first(c->will_install))) {
- assert_se(ordered_hashmap_move_one(c->have_installed, c->will_install, i->name) == 0);
+ STRV_FOREACH(p, paths.search_path) {
+ _cleanup_free_ char *path = NULL, *dropin = NULL;
+ struct stat st;
- q = unit_file_search(c, i, paths, root_dir, false, true, NULL);
- if (q < 0) {
- if (r >= 0)
- r = q;
+ path = path_make_absolute(*i, *p);
+ if (!path)
+ return -ENOMEM;
- return r;
- } else if (r >= 0)
- r += q;
+ r = lstat(path, &st);
+ if (r < 0) {
+ if (errno != ENOENT)
+ return -errno;
+ } else if (S_ISREG(st.st_mode)) {
+ /* Check if there's a vendor version */
+ r = path_is_vendor(&paths, path);
+ if (r < 0)
+ return r;
+ if (r > 0)
+ has_vendor = true;
+ }
- q = install_info_apply(i, paths, config_path, root_dir, force, changes, n_changes);
- if (r >= 0 && q < 0)
- r = q;
- }
+ dropin = strappend(path, ".d");
+ if (!dropin)
+ return -ENOMEM;
- return r;
-}
+ r = lstat(dropin, &st);
+ if (r < 0) {
+ if (errno != ENOENT)
+ return -errno;
+ } else if (S_ISDIR(st.st_mode)) {
+ /* Remove the drop-ins */
+ r = path_shall_revert(&paths, dropin);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2))
+ return -ENOMEM;
-static int install_context_mark_for_removal(
- InstallContext *c,
- const LookupPaths *paths,
- Set **remove_symlinks_to,
- const char *config_path,
- const char *root_dir) {
+ todo[n_todo++] = TAKE_PTR(dropin);
+ }
+ }
+ }
- UnitFileInstallInfo *i;
- int r, q;
+ if (!has_vendor)
+ continue;
- assert(c);
- assert(paths);
- assert(config_path);
+ /* OK, there's a vendor version, hence drop all configuration versions */
+ STRV_FOREACH(p, paths.search_path) {
+ _cleanup_free_ char *path = NULL;
+ struct stat st;
- /* Marks all items for removal */
+ path = path_make_absolute(*i, *p);
+ if (!path)
+ return -ENOMEM;
- if (!ordered_hashmap_isempty(c->will_install)) {
- r = ordered_hashmap_ensure_allocated(&c->have_installed, &string_hash_ops);
- if (r < 0)
- return r;
+ r = lstat(path, &st);
+ if (r < 0) {
+ if (errno != ENOENT)
+ return -errno;
+ } else if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
+ r = path_is_config(&paths, path, true);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2))
+ return -ENOMEM;
- r = ordered_hashmap_reserve(c->have_installed, ordered_hashmap_size(c->will_install));
- if (r < 0)
- return r;
+ todo[n_todo++] = TAKE_PTR(path);
+ }
+ }
+ }
}
+ strv_uniq(todo);
+
r = 0;
- while ((i = ordered_hashmap_first(c->will_install))) {
- assert_se(ordered_hashmap_move_one(c->have_installed, c->will_install, i->name) == 0);
+ STRV_FOREACH(i, todo) {
+ _cleanup_strv_free_ char **fs = NULL;
+ const char *rp;
+ char **j;
- q = unit_file_search(c, i, paths, root_dir, false, true, NULL);
- if (q == -ENOENT) {
- /* do nothing */
- } else if (q < 0) {
- if (r >= 0)
- r = q;
+ (void) get_files_in_directory(*i, &fs);
- return r;
- } else if (r >= 0)
- r += q;
-
- if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE)) {
- char *unit_file;
-
- if (i->path) {
- unit_file = basename(i->path);
-
- if (unit_name_is_valid(unit_file, UNIT_NAME_INSTANCE))
- /* unit file named as instance exists, thus all symlinks
- * pointing to it will be removed */
- q = mark_symlink_for_removal(remove_symlinks_to, i->name);
- else
- /* does not exist, thus we will mark for removal symlinks
- * to template unit file */
- q = mark_symlink_for_removal(remove_symlinks_to, unit_file);
- } else {
- /* If i->path is not set, it means that we didn't actually find
- * the unit file. But we can still remove symlinks to the
- * nonexistent template. */
- r = unit_name_template(i->name, &unit_file);
- if (r < 0)
- return r;
+ q = rm_rf(*i, REMOVE_ROOT|REMOVE_PHYSICAL);
+ if (q < 0 && q != -ENOENT && r >= 0) {
+ r = q;
+ continue;
+ }
- q = mark_symlink_for_removal(remove_symlinks_to, unit_file);
- free(unit_file);
- }
- } else
- q = mark_symlink_for_removal(remove_symlinks_to, i->name);
+ STRV_FOREACH(j, fs) {
+ _cleanup_free_ char *t = NULL;
- if (r >= 0 && q < 0)
- r = q;
+ t = strjoin(*i, "/", *j);
+ if (!t)
+ return -ENOMEM;
+
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, t, NULL);
+ }
+
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, *i, NULL);
+
+ rp = skip_root(&paths, *i);
+ q = mark_symlink_for_removal(&remove_symlinks_to, rp ?: *i);
+ if (q < 0)
+ return q;
}
+ q = remove_marked_symlinks(remove_symlinks_to, paths.runtime_config, &paths, false, changes, n_changes);
+ if (r >= 0)
+ r = q;
+
+ q = remove_marked_symlinks(remove_symlinks_to, paths.persistent_config, &paths, false, changes, n_changes);
+ if (r >= 0)
+ r = q;
+
return r;
}
int unit_file_add_dependency(
UnitFileScope scope,
- bool runtime,
+ UnitFileFlags flags,
const char *root_dir,
char **files,
- char *target,
+ const char *target,
UnitDependency dep,
- bool force,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
_cleanup_(install_context_done) InstallContext c = {};
- _cleanup_free_ char *config_path = NULL;
- char **i;
+ UnitFileInstallInfo *i, *target_info;
+ const char *config_path;
+ char **f;
int r;
- UnitFileInstallInfo *info;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(target);
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
- if (r < 0)
- return r;
+ if (!IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES))
+ return -EINVAL;
+
+ if (!unit_name_is_valid(target, UNIT_NAME_ANY))
+ return -EINVAL;
- r = get_config_path(scope, runtime, root_dir, &config_path);
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
if (r < 0)
return r;
- STRV_FOREACH(i, files) {
- UnitFileState state;
-
- state = unit_file_get_state(scope, root_dir, *i);
- if (state < 0)
- return log_error_errno(state, "Failed to get unit file state for %s: %m", *i);
+ config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
+ if (!config_path)
+ return -ENXIO;
- if (state == UNIT_FILE_MASKED || state == UNIT_FILE_MASKED_RUNTIME) {
- log_error("Failed to enable unit: Unit %s is masked", *i);
- return -EOPNOTSUPP;
- }
+ r = install_info_discover_and_check(scope, &c, &paths, target, SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ &target_info, changes, n_changes);
+ if (r < 0)
+ return r;
- r = install_info_add_auto(&c, *i);
- if (r < 0)
- return r;
- }
+ assert(target_info->type == UNIT_FILE_TYPE_REGULAR);
- if (!ordered_hashmap_isempty(c.will_install)) {
- r = ordered_hashmap_ensure_allocated(&c.have_installed, &string_hash_ops);
- if (r < 0)
- return r;
+ STRV_FOREACH(f, files) {
+ char ***l;
- r = ordered_hashmap_reserve(c.have_installed, ordered_hashmap_size(c.will_install));
+ r = install_info_discover_and_check(scope, &c, &paths, *f, SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ &i, changes, n_changes);
if (r < 0)
return r;
- }
- while ((info = ordered_hashmap_first(c.will_install))) {
- assert_se(ordered_hashmap_move_one(c.have_installed, c.will_install, info->name) == 0);
+ assert(i->type == UNIT_FILE_TYPE_REGULAR);
- r = unit_file_search(&c, info, &paths, root_dir, false, false, NULL);
- if (r < 0)
- return r;
+ /* We didn't actually load anything from the unit
+ * file, but instead just add in our new symlink to
+ * create. */
if (dep == UNIT_WANTS)
- r = strv_extend(&info->wanted_by, target);
- else if (dep == UNIT_REQUIRES)
- r = strv_extend(&info->required_by, target);
+ l = &i->wanted_by;
else
- r = -EINVAL;
-
- if (r < 0)
- return r;
+ l = &i->required_by;
- r = install_info_apply(info, &paths, config_path, root_dir, force, changes, n_changes);
- if (r < 0)
- return r;
+ strv_free(*l);
+ *l = strv_new(target_info->name);
+ if (!*l)
+ return -ENOMEM;
}
- return 0;
+ return install_context_apply(scope, &c, &paths, config_path, !!(flags & UNIT_FILE_FORCE), SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes);
}
int unit_file_enable(
UnitFileScope scope,
- bool runtime,
+ UnitFileFlags flags,
const char *root_dir,
char **files,
- bool force,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
_cleanup_(install_context_done) InstallContext c = {};
- char **i;
- _cleanup_free_ char *config_path = NULL;
+ const char *config_path;
+ UnitFileInstallInfo *i;
+ char **f;
int r;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
- if (r < 0)
- return r;
-
- r = get_config_path(scope, runtime, root_dir, &config_path);
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
if (r < 0)
return r;
- STRV_FOREACH(i, files) {
- UnitFileState state;
-
- /* We only want to know if this unit is masked, so we ignore
- * errors from unit_file_get_state, deferring other checks.
- * This allows templated units to be enabled on the fly. */
- state = unit_file_get_state(scope, root_dir, *i);
- if (state == UNIT_FILE_MASKED || state == UNIT_FILE_MASKED_RUNTIME) {
- log_error("Failed to enable unit: Unit %s is masked", *i);
- return -EOPNOTSUPP;
- }
+ config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
+ if (!config_path)
+ return -ENXIO;
- r = install_info_add_auto(&c, *i);
+ STRV_FOREACH(f, files) {
+ r = install_info_discover_and_check(scope, &c, &paths, *f, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ &i, changes, n_changes);
if (r < 0)
return r;
+
+ assert(i->type == UNIT_FILE_TYPE_REGULAR);
}
/* This will return the number of symlink rules that were
- supposed to be created, not the ones actually created. This is
- useful to determine whether the passed files had any
- installation data at all. */
+ supposed to be created, not the ones actually created. This
+ is useful to determine whether the passed files had any
+ installation data at all. */
- return install_context_apply(&c, &paths, config_path, root_dir, force, changes, n_changes);
+ return install_context_apply(scope, &c, &paths, config_path, !!(flags & UNIT_FILE_FORCE), SEARCH_LOAD, changes, n_changes);
}
int unit_file_disable(
UnitFileScope scope,
- bool runtime,
+ UnitFileFlags flags,
const char *root_dir,
char **files,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
_cleanup_(install_context_done) InstallContext c = {};
- char **i;
- _cleanup_free_ char *config_path = NULL;
_cleanup_set_free_free_ Set *remove_symlinks_to = NULL;
- int r, q;
+ const char *config_path;
+ char **i;
+ int r;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
if (r < 0)
return r;
- r = get_config_path(scope, runtime, root_dir, &config_path);
- if (r < 0)
- return r;
+ config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
+ if (!config_path)
+ return -ENXIO;
STRV_FOREACH(i, files) {
- r = install_info_add_auto(&c, *i);
+ if (!unit_name_is_valid(*i, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ r = install_info_add(&c, *i, NULL, false, NULL);
if (r < 0)
return r;
}
- r = install_context_mark_for_removal(&c, &paths, &remove_symlinks_to, config_path, root_dir);
-
- q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, files);
- if (r >= 0)
- r = q;
+ r = install_context_mark_for_removal(scope, &c, &paths, &remove_symlinks_to, config_path, changes, n_changes);
+ if (r < 0)
+ return r;
- return r;
+ return remove_marked_symlinks(remove_symlinks_to, config_path, &paths, !!(flags & UNIT_FILE_DRY_RUN), changes, n_changes);
}
int unit_file_reenable(
UnitFileScope scope,
- bool runtime,
+ UnitFileFlags flags,
const char *root_dir,
char **files,
- bool force,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
+
+ char **n;
int r;
+ size_t l, i;
- r = unit_file_disable(scope, runtime, root_dir, files,
- changes, n_changes);
+ /* First, we invoke the disable command with only the basename... */
+ l = strv_length(files);
+ n = newa(char*, l+1);
+ for (i = 0; i < l; i++)
+ n[i] = basename(files[i]);
+ n[i] = NULL;
+
+ r = unit_file_disable(scope, flags, root_dir, n, changes, n_changes);
if (r < 0)
return r;
- return unit_file_enable(scope, runtime, root_dir, files, force,
- changes, n_changes);
+ /* But the enable command with the full name */
+ return unit_file_enable(scope, flags, root_dir, files, changes, n_changes);
}
int unit_file_set_default(
UnitFileScope scope,
+ UnitFileFlags flags,
const char *root_dir,
- const char *file,
- bool force,
+ const char *name,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
_cleanup_(install_context_done) InstallContext c = {};
- _cleanup_free_ char *config_path = NULL;
- char *path;
+ UnitFileInstallInfo *i;
+ const char *new_path;
int r;
- UnitFileInstallInfo *i = NULL;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
- assert(file);
+ assert(name);
- if (unit_name_to_type(file) != UNIT_TARGET)
+ if (unit_name_to_type(name) != UNIT_TARGET) /* this also validates the name */
+ return -EINVAL;
+ if (streq(name, SPECIAL_DEFAULT_TARGET))
return -EINVAL;
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
- if (r < 0)
- return r;
-
- r = get_config_path(scope, false, root_dir, &config_path);
- if (r < 0)
- return r;
-
- r = install_info_add_auto(&c, file);
- if (r < 0)
- return r;
-
- assert_se(i = ordered_hashmap_first(c.will_install));
-
- r = unit_file_search(&c, i, &paths, root_dir, false, true, NULL);
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
if (r < 0)
return r;
- path = strjoina(config_path, "/" SPECIAL_DEFAULT_TARGET);
-
- r = create_symlink(i->path, path, force, changes, n_changes);
+ r = install_info_discover_and_check(scope, &c, &paths, name, 0, &i, changes, n_changes);
if (r < 0)
return r;
- return 0;
+ new_path = strjoina(paths.persistent_config, "/" SPECIAL_DEFAULT_TARGET);
+ return create_symlink(&paths, i->path, new_path, !!(flags & UNIT_FILE_FORCE), changes, n_changes);
}
int unit_file_get_default(
const char *root_dir,
char **name) {
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
- char **p;
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
+ _cleanup_(install_context_done) InstallContext c = {};
+ UnitFileInstallInfo *i;
+ char *n;
int r;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
assert(name);
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
if (r < 0)
return r;
- STRV_FOREACH(p, paths.unit_path) {
- _cleanup_free_ char *path = NULL, *tmp = NULL;
- char *n;
-
- path = path_join(root_dir, *p, SPECIAL_DEFAULT_TARGET);
- if (!path)
- return -ENOMEM;
-
- r = readlink_malloc(path, &tmp);
- if (r == -ENOENT)
- continue;
- else if (r == -EINVAL)
- /* not a symlink */
- n = strdup(SPECIAL_DEFAULT_TARGET);
- else if (r < 0)
- return r;
- else
- n = strdup(basename(tmp));
-
- if (!n)
- return -ENOMEM;
+ r = install_info_discover(scope, &c, &paths, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ &i, NULL, NULL);
+ if (r < 0)
+ return r;
+ r = install_info_may_process(i, &paths, NULL, 0);
+ if (r < 0)
+ return r;
- *name = n;
- return 0;
- }
+ n = strdup(i->name);
+ if (!n)
+ return -ENOMEM;
- return -ENOENT;
+ *name = n;
+ return 0;
}
-UnitFileState unit_file_lookup_state(
+int unit_file_lookup_state(
UnitFileScope scope,
- const char *root_dir,
const LookupPaths *paths,
- const char *name) {
+ const char *name,
+ UnitFileState *ret) {
- UnitFileState state = _UNIT_FILE_STATE_INVALID;
- char **i;
- _cleanup_free_ char *path = NULL;
- int r = 0;
+ _cleanup_(install_context_done) InstallContext c = {};
+ UnitFileInstallInfo *i;
+ UnitFileState state;
+ int r;
assert(paths);
+ assert(name);
if (!unit_name_is_valid(name, UNIT_NAME_ANY))
return -EINVAL;
- STRV_FOREACH(i, paths->unit_path) {
- struct stat st;
- char *partial;
- bool also = false;
+ r = install_info_discover(scope, &c, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ &i, NULL, NULL);
+ if (r < 0)
+ return log_debug_errno(r, "Failed to discover unit %s: %m", name);
- free(path);
- path = path_join(root_dir, *i, name);
- if (!path)
- return -ENOMEM;
+ assert(IN_SET(i->type, UNIT_FILE_TYPE_REGULAR, UNIT_FILE_TYPE_MASKED));
+ log_debug("Found unit %s at %s (%s)", name, strna(i->path),
+ i->type == UNIT_FILE_TYPE_REGULAR ? "regular file" : "mask");
- if (root_dir)
- partial = path + strlen(root_dir);
- else
- partial = path;
-
- /*
- * Search for a unit file in our default paths, to
- * be sure, that there are no broken symlinks.
- */
- if (lstat(path, &st) < 0) {
- r = -errno;
- if (errno != ENOENT)
- return r;
+ /* Shortcut things, if the caller just wants to know if this unit exists. */
+ if (!ret)
+ return 0;
- if (!unit_name_is_valid(name, UNIT_NAME_INSTANCE))
- continue;
- } else {
- if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode))
- return -ENOENT;
+ switch (i->type) {
- r = null_or_empty_path(path);
- if (r < 0 && r != -ENOENT)
- return r;
- else if (r > 0) {
- state = path_startswith(*i, "/run") ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED;
- return state;
- }
+ case UNIT_FILE_TYPE_MASKED:
+ r = path_is_runtime(paths, i->path, true);
+ if (r < 0)
+ return r;
+
+ state = r > 0 ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED;
+ break;
+
+ case UNIT_FILE_TYPE_REGULAR:
+ r = path_is_generator(paths, i->path);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ state = UNIT_FILE_GENERATED;
+ break;
+ }
+
+ r = path_is_transient(paths, i->path);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ state = UNIT_FILE_TRANSIENT;
+ break;
}
- r = find_symlinks_in_scope(scope, root_dir, name, &state);
+ /* Check if any of the Alias= symlinks have been created.
+ * We ignore other aliases, and only check those that would
+ * be created by systemctl enable for this unit. */
+ r = find_symlinks_in_scope(scope, paths, i, true, &state);
if (r < 0)
return r;
- else if (r > 0)
- return state;
+ if (r > 0)
+ break;
- r = unit_file_can_install(paths, root_dir, partial, true, &also);
- if (r < 0 && errno != ENOENT)
+ /* Check if the file is known under other names. If it is,
+ * it might be in use. Report that as UNIT_FILE_INDIRECT. */
+ r = find_symlinks_in_scope(scope, paths, i, false, &state);
+ if (r < 0)
return r;
- else if (r > 0)
- return UNIT_FILE_DISABLED;
- else if (r == 0) {
- if (also)
- return UNIT_FILE_INDIRECT;
- return UNIT_FILE_STATIC;
+ if (r > 0)
+ state = UNIT_FILE_INDIRECT;
+ else {
+ if (unit_file_install_info_has_rules(i))
+ state = UNIT_FILE_DISABLED;
+ else if (unit_file_install_info_has_also(i))
+ state = UNIT_FILE_INDIRECT;
+ else
+ state = UNIT_FILE_STATIC;
}
+
+ break;
+
+ default:
+ assert_not_reached("Unexpect unit file type.");
}
- return r < 0 ? r : state;
+ *ret = state;
+ return 0;
}
-UnitFileState unit_file_get_state(
+int unit_file_get_state(
UnitFileScope scope,
const char *root_dir,
- const char *name) {
+ const char *name,
+ UnitFileState *ret) {
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
int r;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
assert(name);
- if (root_dir && scope != UNIT_FILE_SYSTEM)
- return -EINVAL;
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
+ if (r < 0)
+ return r;
+
+ return unit_file_lookup_state(scope, &paths, name, ret);
+}
+
+int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char *name) {
+ _cleanup_(install_context_done) InstallContext c = {};
+ int r;
+
+ assert(paths);
+ assert(name);
+
+ if (!unit_name_is_valid(name, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ r = install_info_discover(scope, &c, paths, name, 0, NULL, NULL, NULL);
+ if (r == -ENOENT)
+ return 0;
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int split_pattern_into_name_and_instances(const char *pattern, char **out_unit_name, char ***out_instances) {
+ _cleanup_strv_free_ char **instances = NULL;
+ _cleanup_free_ char *unit_name = NULL;
+ int r;
+
+ assert(pattern);
+ assert(out_instances);
+ assert(out_unit_name);
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
+ r = extract_first_word(&pattern, &unit_name, NULL, 0);
if (r < 0)
return r;
- return unit_file_lookup_state(scope, root_dir, &paths, name);
+ /* We handle the instances logic when unit name is extracted */
+ if (pattern) {
+ /* We only create instances when a rule of templated unit
+ * is seen. A rule like enable foo@.service a b c will
+ * result in an array of (a, b, c) as instance names */
+ if (!unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE))
+ return -EINVAL;
+
+ instances = strv_split(pattern, WHITESPACE);
+ if (!instances)
+ return -ENOMEM;
+
+ *out_instances = TAKE_PTR(instances);
+ }
+
+ *out_unit_name = TAKE_PTR(unit_name);
+
+ return 0;
}
-int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) {
+static int read_presets(UnitFileScope scope, const char *root_dir, Presets *presets) {
+ _cleanup_(presets_freep) Presets ps = {};
+ size_t n_allocated = 0;
_cleanup_strv_free_ char **files = NULL;
char **p;
int r;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
- assert(name);
+ assert(presets);
- if (scope == UNIT_FILE_SYSTEM)
- r = conf_files_list(&files, ".preset", root_dir,
+ switch (scope) {
+ case UNIT_FILE_SYSTEM:
+ r = conf_files_list(&files, ".preset", root_dir, 0,
"/etc/systemd/system-preset",
+ "/run/systemd/system-preset",
"/usr/local/lib/systemd/system-preset",
"/usr/lib/systemd/system-preset",
-#ifdef HAVE_SPLIT_USR
+#if HAVE_SPLIT_USR
"/lib/systemd/system-preset",
#endif
NULL);
- else if (scope == UNIT_FILE_GLOBAL)
- r = conf_files_list(&files, ".preset", root_dir,
+ break;
+
+ case UNIT_FILE_GLOBAL:
+ case UNIT_FILE_USER:
+ r = conf_files_list(&files, ".preset", root_dir, 0,
"/etc/systemd/user-preset",
+ "/run/systemd/user-preset",
"/usr/local/lib/systemd/user-preset",
"/usr/lib/systemd/user-preset",
NULL);
- else
- return 1;
+ break;
+
+ default:
+ assert_not_reached("Invalid unit file scope");
+ }
if (r < 0)
return r;
STRV_FOREACH(p, files) {
_cleanup_fclose_ FILE *f;
+ int n = 0;
f = fopen(*p, "re");
if (!f) {
}
for (;;) {
- char line[LINE_MAX], *l;
+ _cleanup_free_ char *line = NULL;
+ PresetRule rule = {};
+ const char *parameter;
+ char *l;
- if (!fgets(line, sizeof(line), f))
+ r = read_line(f, LONG_LINE_MAX, &line);
+ if (r < 0)
+ return r;
+ if (r == 0)
break;
l = strstrip(line);
- if (!*l)
- continue;
+ n++;
- if (strchr(COMMENTS "\n", *l))
+ if (isempty(l))
+ continue;
+ if (strchr(COMMENTS, *l))
continue;
- if (first_word(l, "enable")) {
- l += 6;
- l += strspn(l, WHITESPACE);
+ parameter = first_word(l, "enable");
+ if (parameter) {
+ char *unit_name;
+ char **instances = NULL;
- if (fnmatch(l, name, FNM_NOESCAPE) == 0) {
- log_debug("Preset file says enable %s.", name);
- return 1;
+ /* Unit_name will remain the same as parameter when no instances are specified */
+ r = split_pattern_into_name_and_instances(parameter, &unit_name, &instances);
+ if (r < 0) {
+ log_syntax(NULL, LOG_WARNING, *p, n, r, "Couldn't parse line '%s'. Ignoring.", line);
+ continue;
}
- } else if (first_word(l, "disable")) {
- l += 7;
- l += strspn(l, WHITESPACE);
+ rule = (PresetRule) {
+ .pattern = unit_name,
+ .action = PRESET_ENABLE,
+ .instances = instances,
+ };
+ }
- if (fnmatch(l, name, FNM_NOESCAPE) == 0) {
- log_debug("Preset file says disable %s.", name);
- return 0;
- }
+ parameter = first_word(l, "disable");
+ if (parameter) {
+ char *pattern;
+
+ pattern = strdup(parameter);
+ if (!pattern)
+ return -ENOMEM;
+
+ rule = (PresetRule) {
+ .pattern = pattern,
+ .action = PRESET_DISABLE,
+ };
+ }
+
+ if (rule.action) {
+ if (!GREEDY_REALLOC(ps.rules, n_allocated, ps.n_rules + 1))
+ return -ENOMEM;
- } else
- log_debug("Couldn't parse line '%s'", l);
+ ps.rules[ps.n_rules++] = rule;
+ continue;
+ }
+
+ log_syntax(NULL, LOG_WARNING, *p, n, 0, "Couldn't parse line '%s'. Ignoring.", line);
}
}
- /* Default is "enable" */
- log_debug("Preset file doesn't say anything about %s, enabling.", name);
- return 1;
+ *presets = ps;
+ ps = (Presets){};
+
+ return 0;
}
-int unit_file_preset(
- UnitFileScope scope,
- bool runtime,
- const char *root_dir,
- char **files,
- UnitFilePresetMode mode,
- bool force,
- UnitFileChange **changes,
- unsigned *n_changes) {
+static int pattern_match_multiple_instances(
+ const PresetRule rule,
+ const char *unit_name,
+ char ***ret) {
- _cleanup_(install_context_done) InstallContext plus = {}, minus = {};
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
- _cleanup_free_ char *config_path = NULL;
- char **i;
- int r, q;
+ _cleanup_free_ char *templated_name = NULL;
+ int r;
- assert(scope >= 0);
- assert(scope < _UNIT_FILE_SCOPE_MAX);
- assert(mode < _UNIT_FILE_PRESET_MAX);
+ /* If no ret is needed or the rule itself does not have instances
+ * initalized, we return not matching */
+ if (!ret || !rule.instances)
+ return 0;
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
+ r = unit_name_template(unit_name, &templated_name);
if (r < 0)
return r;
+ if (!streq(rule.pattern, templated_name))
+ return 0;
- r = get_config_path(scope, runtime, root_dir, &config_path);
- if (r < 0)
- return r;
+ /* Compose a list of specified instances when unit name is a template */
+ if (unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) {
+ _cleanup_free_ char *prefix = NULL;
+ _cleanup_strv_free_ char **out_strv = NULL;
+ char **iter;
- STRV_FOREACH(i, files) {
+ r = unit_name_to_prefix(unit_name, &prefix);
+ if (r < 0)
+ return r;
- if (!unit_name_is_valid(*i, UNIT_NAME_ANY))
- return -EINVAL;
+ STRV_FOREACH(iter, rule.instances) {
+ _cleanup_free_ char *name = NULL;
+ r = unit_name_build(prefix, *iter, ".service", &name);
+ if (r < 0)
+ return r;
+ r = strv_extend(&out_strv, name);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = TAKE_PTR(out_strv);
+ return 1;
+ } else {
+ /* We now know the input unit name is an instance name */
+ _cleanup_free_ char *instance_name = NULL;
- r = unit_file_query_preset(scope, root_dir, *i);
+ r = unit_name_to_instance(unit_name, &instance_name);
if (r < 0)
return r;
- if (r && mode != UNIT_FILE_PRESET_DISABLE_ONLY)
- r = install_info_add_auto(&plus, *i);
- else if (!r && mode != UNIT_FILE_PRESET_ENABLE_ONLY)
- r = install_info_add_auto(&minus, *i);
+ if (strv_find(rule.instances, instance_name))
+ return 1;
+ }
+ return 0;
+}
+
+static int query_presets(const char *name, const Presets presets, char ***instance_name_list) {
+ PresetAction action = PRESET_UNKNOWN;
+ size_t i;
+ char **s;
+ if (!unit_name_is_valid(name, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ for (i = 0; i < presets.n_rules; i++)
+ if (pattern_match_multiple_instances(presets.rules[i], name, instance_name_list) > 0 ||
+ fnmatch(presets.rules[i].pattern, name, FNM_NOESCAPE) == 0) {
+ action = presets.rules[i].action;
+ break;
+ }
+
+ switch (action) {
+ case PRESET_UNKNOWN:
+ log_debug("Preset files don't specify rule for %s. Enabling.", name);
+ return 1;
+ case PRESET_ENABLE:
+ if (instance_name_list && *instance_name_list)
+ STRV_FOREACH(s, *instance_name_list)
+ log_debug("Preset files say enable %s.", *s);
else
- r = 0;
- if (r < 0)
- return r;
+ log_debug("Preset files say enable %s.", name);
+ return 1;
+ case PRESET_DISABLE:
+ log_debug("Preset files say disable %s.", name);
+ return 0;
+ default:
+ assert_not_reached("invalid preset action");
}
+}
- r = 0;
+int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) {
+ _cleanup_(presets_freep) Presets presets = {};
+ int r;
+
+ r = read_presets(scope, root_dir, &presets);
+ if (r < 0)
+ return r;
+
+ return query_presets(name, presets, NULL);
+}
+
+static int execute_preset(
+ UnitFileScope scope,
+ InstallContext *plus,
+ InstallContext *minus,
+ const LookupPaths *paths,
+ const char *config_path,
+ char **files,
+ UnitFilePresetMode mode,
+ bool force,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ int r;
+
+ assert(plus);
+ assert(minus);
+ assert(paths);
+ assert(config_path);
if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) {
_cleanup_set_free_free_ Set *remove_symlinks_to = NULL;
- r = install_context_mark_for_removal(&minus, &paths, &remove_symlinks_to, config_path, root_dir);
+ r = install_context_mark_for_removal(scope, minus, paths, &remove_symlinks_to, config_path, changes, n_changes);
+ if (r < 0)
+ return r;
- q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, files);
- if (r == 0)
- r = q;
- }
+ r = remove_marked_symlinks(remove_symlinks_to, config_path, paths, false, changes, n_changes);
+ } else
+ r = 0;
if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) {
+ int q;
+
/* Returns number of symlinks that where supposed to be installed. */
- q = install_context_apply(&plus, &paths, config_path, root_dir, force, changes, n_changes);
- if (r == 0)
- r = q;
+ q = install_context_apply(scope, plus, paths, config_path, force, SEARCH_LOAD, changes, n_changes);
+ if (r >= 0) {
+ if (q < 0)
+ r = q;
+ else
+ r += q;
+ }
}
return r;
}
+static int preset_prepare_one(
+ UnitFileScope scope,
+ InstallContext *plus,
+ InstallContext *minus,
+ LookupPaths *paths,
+ const char *name,
+ Presets presets,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ _cleanup_(install_context_done) InstallContext tmp = {};
+ _cleanup_strv_free_ char **instance_name_list = NULL;
+ UnitFileInstallInfo *i;
+ int r;
+
+ if (install_info_find(plus, name) || install_info_find(minus, name))
+ return 0;
+
+ r = install_info_discover(scope, &tmp, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ &i, changes, n_changes);
+ if (r < 0)
+ return r;
+ if (!streq(name, i->name)) {
+ log_debug("Skipping %s because it is an alias for %s.", name, i->name);
+ return 0;
+ }
+
+ r = query_presets(name, presets, &instance_name_list);
+ if (r < 0)
+ return r;
+
+ if (r > 0) {
+ if (instance_name_list) {
+ char **s;
+ STRV_FOREACH(s, instance_name_list) {
+ r = install_info_discover_and_check(scope, plus, paths, *s, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ &i, changes, n_changes);
+ if (r < 0)
+ return r;
+ }
+ } else {
+ r = install_info_discover_and_check(scope, plus, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ &i, changes, n_changes);
+ if (r < 0)
+ return r;
+ }
+
+ } else
+ r = install_info_discover(scope, minus, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ &i, changes, n_changes);
+
+ return r;
+}
+
+int unit_file_preset(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFilePresetMode mode,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ _cleanup_(install_context_done) InstallContext plus = {}, minus = {};
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
+ _cleanup_(presets_freep) Presets presets = {};
+ const char *config_path;
+ char **i;
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(mode < _UNIT_FILE_PRESET_MAX);
+
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
+ if (r < 0)
+ return r;
+
+ config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
+ if (!config_path)
+ return -ENXIO;
+
+ r = read_presets(scope, root_dir, &presets);
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(i, files) {
+ r = preset_prepare_one(scope, &plus, &minus, &paths, *i, presets, changes, n_changes);
+ if (r < 0)
+ return r;
+ }
+
+ return execute_preset(scope, &plus, &minus, &paths, config_path, files, mode, !!(flags & UNIT_FILE_FORCE), changes, n_changes);
+}
+
int unit_file_preset_all(
UnitFileScope scope,
- bool runtime,
+ UnitFileFlags flags,
const char *root_dir,
UnitFilePresetMode mode,
- bool force,
UnitFileChange **changes,
- unsigned *n_changes) {
+ size_t *n_changes) {
_cleanup_(install_context_done) InstallContext plus = {}, minus = {};
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
- _cleanup_free_ char *config_path = NULL;
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
+ _cleanup_(presets_freep) Presets presets = {};
+ const char *config_path = NULL;
char **i;
- int r, q;
+ int r;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
assert(mode < _UNIT_FILE_PRESET_MAX);
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
if (r < 0)
return r;
- r = get_config_path(scope, runtime, root_dir, &config_path);
+ config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
+ if (!config_path)
+ return -ENXIO;
+
+ r = read_presets(scope, root_dir, &presets);
if (r < 0)
return r;
- STRV_FOREACH(i, paths.unit_path) {
+ STRV_FOREACH(i, paths.search_path) {
_cleanup_closedir_ DIR *d = NULL;
- _cleanup_free_ char *units_dir;
-
- units_dir = path_join(root_dir, *i, NULL);
- if (!units_dir)
- return -ENOMEM;
+ struct dirent *de;
- d = opendir(units_dir);
+ d = opendir(*i);
if (!d) {
if (errno == ENOENT)
continue;
return -errno;
}
- for (;;) {
- struct dirent *de;
-
- errno = 0;
- de = readdir(d);
- if (!de && errno != 0)
- return -errno;
-
- if (!de)
- break;
-
- if (hidden_file(de->d_name))
- continue;
+ FOREACH_DIRENT(de, d, return -errno) {
if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY))
continue;
dirent_ensure_type(d, de);
- if (de->d_type != DT_REG)
+ if (!IN_SET(de->d_type, DT_LNK, DT_REG))
continue;
- r = unit_file_query_preset(scope, root_dir, de->d_name);
- if (r < 0)
- return r;
-
- if (r && mode != UNIT_FILE_PRESET_DISABLE_ONLY)
- r = install_info_add_auto(&plus, de->d_name);
- else if (!r && mode != UNIT_FILE_PRESET_ENABLE_ONLY)
- r = install_info_add_auto(&minus, de->d_name);
- else
- r = 0;
+ /* we don't pass changes[] in, because we want to handle errors on our own */
+ r = preset_prepare_one(scope, &plus, &minus, &paths, de->d_name, presets, NULL, 0);
+ if (r == -ERFKILL)
+ r = unit_file_changes_add(changes, n_changes,
+ UNIT_FILE_IS_MASKED, de->d_name, NULL);
+ else if (r == -ENOLINK)
+ r = unit_file_changes_add(changes, n_changes,
+ UNIT_FILE_IS_DANGLING, de->d_name, NULL);
+ else if (r == -EADDRNOTAVAIL) /* Ignore generated/transient units when applying preset */
+ continue;
if (r < 0)
return r;
}
}
- r = 0;
-
- if (mode != UNIT_FILE_PRESET_ENABLE_ONLY) {
- _cleanup_set_free_free_ Set *remove_symlinks_to = NULL;
-
- r = install_context_mark_for_removal(&minus, &paths, &remove_symlinks_to, config_path, root_dir);
-
- q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, NULL);
- if (r == 0)
- r = q;
- }
-
- if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) {
- q = install_context_apply(&plus, &paths, config_path, root_dir, force, changes, n_changes);
- if (r == 0)
- r = q;
- }
-
- return r;
+ return execute_preset(scope, &plus, &minus, &paths, config_path, NULL, mode, !!(flags & UNIT_FILE_FORCE), changes, n_changes);
}
static void unit_file_list_free_one(UnitFileList *f) {
free(f);
}
+Hashmap* unit_file_list_free(Hashmap *h) {
+ return hashmap_free_with_destructor(h, unit_file_list_free_one);
+}
+
DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one);
int unit_file_get_list(
UnitFileScope scope,
const char *root_dir,
- Hashmap *h) {
+ Hashmap *h,
+ char **states,
+ char **patterns) {
- _cleanup_lookup_paths_free_ LookupPaths paths = {};
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
char **i;
int r;
assert(scope < _UNIT_FILE_SCOPE_MAX);
assert(h);
- if (root_dir && scope != UNIT_FILE_SYSTEM)
- return -EINVAL;
-
- if (root_dir) {
- r = access(root_dir, F_OK);
- if (r < 0)
- return -errno;
- }
-
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
+ r = lookup_paths_init(&paths, scope, 0, root_dir);
if (r < 0)
return r;
- STRV_FOREACH(i, paths.unit_path) {
+ STRV_FOREACH(i, paths.search_path) {
_cleanup_closedir_ DIR *d = NULL;
- _cleanup_free_ char *units_dir;
-
- units_dir = path_join(root_dir, *i, NULL);
- if (!units_dir)
- return -ENOMEM;
+ struct dirent *de;
- d = opendir(units_dir);
+ d = opendir(*i);
if (!d) {
if (errno == ENOENT)
continue;
+ if (IN_SET(errno, ENOTDIR, EACCES)) {
+ log_debug_errno(errno, "Failed to open \"%s\": %m", *i);
+ continue;
+ }
return -errno;
}
- for (;;) {
+ FOREACH_DIRENT(de, d, return -errno) {
_cleanup_(unit_file_list_free_onep) UnitFileList *f = NULL;
- struct dirent *de;
- _cleanup_free_ char *path = NULL;
- bool also = false;
-
- errno = 0;
- de = readdir(d);
- if (!de && errno != 0)
- return -errno;
- if (!de)
- break;
-
- if (hidden_file(de->d_name))
+ if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY))
continue;
- if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY))
+ if (!strv_fnmatch_or_empty(patterns, de->d_name, FNM_NOESCAPE))
continue;
if (hashmap_get(h, de->d_name))
if (!f)
return -ENOMEM;
- f->path = path_make_absolute(de->d_name, units_dir);
+ f->path = path_make_absolute(de->d_name, *i);
if (!f->path)
return -ENOMEM;
- r = null_or_empty_path(f->path);
- if (r < 0 && r != -ENOENT)
- return r;
- else if (r > 0) {
- f->state =
- path_startswith(*i, "/run") ?
- UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED;
- goto found;
- }
-
- r = find_symlinks_in_scope(scope, root_dir, de->d_name, &f->state);
+ r = unit_file_lookup_state(scope, &paths, de->d_name, &f->state);
if (r < 0)
- return r;
- else if (r > 0) {
- f->state = UNIT_FILE_ENABLED;
- goto found;
- }
-
- path = path_make_absolute(de->d_name, *i);
- if (!path)
- return -ENOMEM;
+ f->state = UNIT_FILE_BAD;
- r = unit_file_can_install(&paths, root_dir, path, true, &also);
- if (r == -EINVAL || /* Invalid setting? */
- r == -EBADMSG || /* Invalid format? */
- r == -ENOENT /* Included file not found? */)
- f->state = UNIT_FILE_INVALID;
- else if (r < 0)
- return r;
- else if (r > 0)
- f->state = UNIT_FILE_DISABLED;
- else
- f->state = also ? UNIT_FILE_INDIRECT : UNIT_FILE_STATIC;
+ if (!strv_isempty(states) &&
+ !strv_contains(states, unit_file_state_to_string(f->state)))
+ continue;
- found:
r = hashmap_put(h, basename(f->path), f);
if (r < 0)
return r;
+
f = NULL; /* prevent cleanup */
}
}
[UNIT_FILE_STATIC] = "static",
[UNIT_FILE_DISABLED] = "disabled",
[UNIT_FILE_INDIRECT] = "indirect",
- [UNIT_FILE_INVALID] = "invalid",
+ [UNIT_FILE_GENERATED] = "generated",
+ [UNIT_FILE_TRANSIENT] = "transient",
+ [UNIT_FILE_BAD] = "bad",
};
DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState);
static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX] = {
[UNIT_FILE_SYMLINK] = "symlink",
[UNIT_FILE_UNLINK] = "unlink",
+ [UNIT_FILE_IS_MASKED] = "masked",
+ [UNIT_FILE_IS_DANGLING] = "dangling",
};
DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, UnitFileChangeType);
projects / systemd.git / blobdiff