-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
- Copyright 2010 Lennart Poettering
+ Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
(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
+ WITHOUT ANY WARRANTY; without even the implied warranty <of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <sys/stat.h>
-#include <stdio.h>
-#include <getopt.h>
#include <errno.h>
+#include <fcntl.h>
#include <unistd.h>
+#include <string.h>
+#include <fnmatch.h>
-#include "log.h"
-#include "path-lookup.h"
#include "util.h"
-#include "macro.h"
+#include "hashmap.h"
+#include "set.h"
+#include "path-lookup.h"
#include "strv.h"
+#include "unit-name.h"
+#include "install.h"
#include "conf-parser.h"
-static bool arg_force = false;
-
-static enum {
- WHERE_SYSTEM,
- WHERE_SESSION,
- WHERE_GLOBAL,
-} arg_where = WHERE_SYSTEM;
-
-static enum {
- ACTION_INVALID,
- ACTION_ENABLE,
- ACTION_DISABLE,
- ACTION_TEST
-} arg_action = ACTION_INVALID;
-
typedef struct {
char *name;
char *path;
char **wanted_by;
} InstallInfo;
-Hashmap *will_install = NULL, *have_installed = NULL;
+typedef struct {
+ Hashmap *will_install;
+ Hashmap *have_installed;
+} InstallContext;
-static int help(void) {
+static int lookup_paths_init_from_scope(LookupPaths *paths, UnitFileScope scope) {
+ assert(paths);
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
- printf("%s [options]\n\n"
- "Install init system units.\n\n"
- " -h --help Show this help\n"
- " --force Override existing links\n"
- " --system Install into system\n"
- " --session Install into session\n"
- " --global Install into all sessions\n"
- "Commands:\n"
- " enable [NAME...] Enable one or more units\n"
- " disable [NAME...] Disable one or more units\n"
- " test [NAME...] Test whether any of the specified units are enabled\n",
- program_invocation_short_name);
+ zero(*paths);
- return 0;
+ return lookup_paths_init(paths,
+ scope == UNIT_FILE_SYSTEM ? MANAGER_SYSTEM : MANAGER_USER,
+ scope == UNIT_FILE_USER);
}
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_SESSION = 0x100,
- ARG_SYSTEM,
- ARG_GLOBAL,
- ARG_FORCE
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "session", no_argument, NULL, ARG_SESSION },
- { "system", no_argument, NULL, ARG_SYSTEM },
- { "global", no_argument, NULL, ARG_GLOBAL },
- { "force", no_argument, NULL, ARG_FORCE },
- { NULL, 0, NULL, 0 }
- };
+static int get_config_path(UnitFileScope scope, bool runtime, const char *root_dir, char **ret) {
+ char *p = NULL;
+ int r;
- int c;
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(ret);
- assert(argc >= 1);
- assert(argv);
+ switch (scope) {
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
+ case UNIT_FILE_SYSTEM:
- switch (c) {
+ if (root_dir && runtime)
+ return -EINVAL;
- case 'h':
- help();
- return 0;
+ if (runtime)
+ p = strdup("/run/systemd/system");
+ else if (root_dir)
+ asprintf(&p, "%s/%s", root_dir, SYSTEM_CONFIG_UNIT_PATH);
+ else
+ p = strdup(SYSTEM_CONFIG_UNIT_PATH);
- case ARG_SESSION:
- arg_where = WHERE_SESSION;
- break;
+ break;
- case ARG_SYSTEM:
- arg_where = WHERE_SYSTEM;
- break;
+ case UNIT_FILE_GLOBAL:
- case ARG_GLOBAL:
- arg_where = WHERE_GLOBAL;
- break;
+ if (root_dir)
+ return -EINVAL;
- case ARG_FORCE:
- arg_force = true;
- break;
+ if (runtime)
+ p = strdup("/run/systemd/user");
+ else
+ p = strdup(USER_CONFIG_UNIT_PATH);
+ break;
- case '?':
- return -EINVAL;
+ case UNIT_FILE_USER:
- default:
- log_error("Unknown option code %c", c);
+ if (root_dir || runtime)
return -EINVAL;
- }
- }
-
- if (optind >= argc) {
- log_error("Missing verb.");
- return -EINVAL;
- }
- if (streq(argv[optind], "enable"))
- arg_action = ACTION_ENABLE;
- else if (streq(argv[optind], "disable"))
- arg_action = ACTION_DISABLE;
- else if (streq(argv[optind], "test"))
- arg_action = ACTION_TEST;
- else {
- log_error("Unknown verb %s", argv[optind]);
- return -EINVAL;
- }
+ r = user_config_home(&p);
+ if (r <= 0)
+ return r < 0 ? r : -ENOENT;
- optind++;
+ break;
- if (optind >= argc) {
- log_error("Missing unit name.");
- return -EINVAL;
+ default:
+ assert_not_reached("Bad scope");
}
- return 1;
-}
-
-static void install_info_free(InstallInfo *i) {
- assert(i);
+ if (!p)
+ return -ENOMEM;
- free(i->name);
- free(i->path);
- strv_free(i->aliases);
- strv_free(i->wanted_by);
- free(i);
+ *ret = p;
+ return 0;
}
-static void install_info_hashmap_free(Hashmap *m) {
- InstallInfo *i;
+static int add_file_change(
+ UnitFileChange **changes,
+ unsigned *n_changes,
+ UnitFileChangeType type,
+ const char *path,
+ const char *source) {
- while ((i = hashmap_steal_first(m)))
- install_info_free(i);
+ UnitFileChange *c;
+ unsigned i;
- hashmap_free(m);
-}
+ assert(path);
+ assert(!changes == !n_changes);
-static bool unit_name_valid(const char *name) {
+ if (!changes)
+ return 0;
- /* This is a minimal version of unit_name_valid() from
- * unit-name.c */
+ c = realloc(*changes, (*n_changes + 1) * sizeof(UnitFileChange));
+ if (!c)
+ return -ENOMEM;
- if (strchr(name, '/'))
- return false;
+ *changes = c;
+ i = *n_changes;
- if (!*name)
- return false;
+ c[i].type = type;
+ c[i].path = strdup(path);
+ if (!c[i].path)
+ return -ENOMEM;
- if (ignore_file(name))
- return false;
+ if (source) {
+ c[i].source = strdup(source);
+ if (!c[i].source) {
+ free(c[i].path);
+ return -ENOMEM;
+ }
+ } else
+ c[i].source = NULL;
- return true;
+ *n_changes = i+1;
+ return 0;
}
-static int install_info_add(const char *name) {
- InstallInfo *i;
+static int mark_symlink_for_removal(
+ Set **remove_symlinks_to,
+ const char *p) {
+
+ char *n;
int r;
- if (!unit_name_valid(name))
- return -EINVAL;
+ assert(p);
- if (hashmap_get(have_installed, name) ||
- hashmap_get(will_install, name))
- return 0;
+ r = set_ensure_allocated(remove_symlinks_to, string_hash_func, string_compare_func);
+ if (r < 0)
+ return r;
- if (!(i = new0(InstallInfo, 1))) {
- r = -ENOMEM;
- goto fail;
- }
+ n = strdup(p);
+ if (!n)
+ return -ENOMEM;
- if (!(i->name = strdup(name))) {
- r = -ENOMEM;
- goto fail;
- }
+ path_kill_slashes(n);
- if ((r = hashmap_put(will_install, i->name, i)) < 0)
- goto fail;
+ r = set_put(*remove_symlinks_to, n);
+ if (r < 0) {
+ free(n);
+ return r == -EEXIST ? 0 : r;
+ }
return 0;
+}
-fail:
- if (i)
- install_info_free(i);
+static int remove_marked_symlinks_fd(
+ Set *remove_symlinks_to,
+ int fd,
+ const char *path,
+ const char *config_path,
+ bool *deleted,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ int r = 0;
+ DIR *d;
+ struct dirent buffer, *de;
+
+ assert(remove_symlinks_to);
+ assert(fd >= 0);
+ assert(path);
+ assert(config_path);
+ assert(deleted);
+
+ d = fdopendir(fd);
+ if (!d) {
+ close_nointr_nofail(fd);
+ return -errno;
+ }
- return r;
-}
+ rewinddir(d);
-static int config_parse_also(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
+ for (;;) {
+ int k;
- char *w;
- size_t l;
- char *state;
+ k = readdir_r(d, &buffer, &de);
+ if (k != 0) {
+ r = -errno;
+ break;
+ }
- assert(filename);
- assert(lvalue);
- assert(rvalue);
+ if (!de)
+ break;
- FOREACH_WORD_QUOTED(w, l, rvalue, state) {
- char *n;
- int r;
+ if (ignore_file(de->d_name))
+ continue;
- if (!(n = strndup(w, l)))
- return -ENOMEM;
+ dirent_ensure_type(d, de);
- r = install_info_add(n);
- free(n);
+ if (de->d_type == DT_DIR) {
+ int nfd, q;
+ char *p;
- if (r < 0)
- return r;
- }
+ nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
+ if (nfd < 0) {
+ if (errno == ENOENT)
+ continue;
- return 0;
-}
+ if (r == 0)
+ r = -errno;
+ continue;
+ }
-static int create_symlink(const char *old_path, const char *new_path) {
- int r;
+ p = path_make_absolute(de->d_name, path);
+ if (!p) {
+ close_nointr_nofail(nfd);
+ r = -ENOMEM;
+ break;
+ }
- assert(old_path);
- assert(new_path);
+ /* 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);
+ free(p);
- if (arg_action == ACTION_ENABLE) {
- char *dest;
+ if (r == 0)
+ r = q;
- mkdir_parents(new_path, 0755);
+ } else if (de->d_type == DT_LNK) {
+ char *p, *dest;
+ int q;
+ bool found;
- if (symlink(old_path, new_path) >= 0)
- return 0;
+ p = path_make_absolute(de->d_name, path);
+ if (!p) {
+ r = -ENOMEM;
+ break;
+ }
- if (errno != EEXIST) {
- log_error("Cannot link %s to %s: %m", old_path, new_path);
- return -errno;
- }
+ q = readlink_and_canonicalize(p, &dest);
+ if (q < 0) {
+ free(p);
- if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
+ if (q == -ENOENT)
+ continue;
- if (errno == EINVAL) {
- log_error("Cannot link %s to %s, file exists already and is not a symlink.", old_path, new_path);
- return -EEXIST;
+ if (r == 0)
+ r = q;
+ continue;
}
- log_error("readlink() failed: %s", strerror(-r));
- return r;
- }
+ found =
+ set_get(remove_symlinks_to, dest) ||
+ set_get(remove_symlinks_to, file_name_from_path(dest));
- if (streq(dest, old_path)) {
- free(dest);
- return 0;
- }
+ if (found) {
+
+ if (unlink(p) < 0 && errno != ENOENT) {
+
+ if (r == 0)
+ r = -errno;
+ } else {
+ rmdir_parents(p, config_path);
+ path_kill_slashes(p);
+
+ add_file_change(changes, n_changes, UNIT_FILE_UNLINK, p, NULL);
- if (!arg_force) {
- log_error("Cannot link %s to %s, symlink exists already and points to %s.", old_path, new_path, dest);
+ if (!set_get(remove_symlinks_to, p)) {
+
+ q = mark_symlink_for_removal(&remove_symlinks_to, p);
+ if (q < 0) {
+ if (r == 0)
+ r = q;
+ } else
+ *deleted = true;
+ }
+ }
+ }
+
+ free(p);
free(dest);
- return -EEXIST;
}
+ }
- free(dest);
- unlink(new_path);
+ closedir(d);
- if (symlink(old_path, new_path) >= 0)
- return 0;
+ return r;
+}
- log_error("Cannot link %s to %s: %m", old_path, new_path);
- return -errno;
+static int remove_marked_symlinks(
+ Set *remove_symlinks_to,
+ const char *config_path,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
- } else if (arg_action == ACTION_DISABLE) {
- char *dest;
+ int fd, r = 0;
+ bool deleted;
- if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
- if (errno == ENOENT)
- return 0;
+ assert(config_path);
- if (errno == EINVAL) {
- log_warning("File %s not a symlink, ignoring.", old_path);
- return 0;
- }
+ if (set_size(remove_symlinks_to) <= 0)
+ return 0;
- log_error("readlink() failed: %s", strerror(-r));
- return r;
- }
+ fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
+ if (fd < 0)
+ return -errno;
- if (!streq(dest, old_path)) {
- log_warning("File %s not a symlink to %s but points to %s, ignoring.", new_path, old_path, dest);
- free(dest);
- return 0;
+ do {
+ int q, cfd;
+ deleted = false;
+
+ cfd = dup(fd);
+ if (cfd < 0) {
+ r = -errno;
+ break;
}
- free(dest);
- if (unlink(new_path) >= 0)
- return 0;
+ /* 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);
+ if (r == 0)
+ r = q;
+ } while (deleted);
- log_error("Cannot unlink %s: %m", new_path);
- return -errno;
+ close_nointr_nofail(fd);
- } else if (arg_action == ACTION_TEST) {
- char *dest;
+ return r;
+}
- if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
+static int find_symlinks_fd(
+ const char *name,
+ int fd,
+ const char *path,
+ const char *config_path,
+ bool *same_name_link) {
+
+ int r = 0;
+ DIR *d;
+ struct dirent buffer, *de;
+
+ assert(name);
+ assert(fd >= 0);
+ assert(path);
+ assert(config_path);
+ assert(same_name_link);
+
+ d = fdopendir(fd);
+ if (!d) {
+ close_nointr_nofail(fd);
+ return -errno;
+ }
- if (errno == ENOENT || errno == EINVAL)
- return 0;
+ for (;;) {
+ int k;
- log_error("readlink() failed: %s", strerror(-r));
- return r;
+ k = readdir_r(d, &buffer, &de);
+ if (k != 0) {
+ r = -errno;
+ break;
}
- if (streq(dest, old_path)) {
- free(dest);
- return 1;
- }
+ if (!de)
+ break;
- return 0;
- }
+ if (ignore_file(de->d_name))
+ continue;
- assert_not_reached("Unknown action.");
-}
+ dirent_ensure_type(d, de);
-static int install_info_symlink_alias(InstallInfo *i, const char *config_path) {
- char **s;
- char *alias_path = NULL;
- int r;
+ if (de->d_type == DT_DIR) {
+ int nfd, q;
+ char *p;
- assert(i);
+ nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
+ if (nfd < 0) {
+ if (errno == ENOENT)
+ continue;
- STRV_FOREACH(s, i->aliases) {
+ if (r == 0)
+ r = -errno;
+ continue;
+ }
- if (!unit_name_valid(*s)) {
- log_error("Invalid name %s.", *s);
- r = -EINVAL;
- goto finish;
- }
+ p = path_make_absolute(de->d_name, path);
+ if (!p) {
+ close_nointr_nofail(nfd);
+ r = -ENOMEM;
+ break;
+ }
- free(alias_path);
- if (!(alias_path = path_make_absolute(*s, config_path))) {
- log_error("Out of memory");
- r = -ENOMEM;
- goto finish;
- }
+ /* This will close nfd, regardless whether it succeeds or not */
+ q = find_symlinks_fd(name, nfd, p, config_path, same_name_link);
+ free(p);
- if ((r = create_symlink(i->path, alias_path)) != 0)
- goto finish;
- }
+ if (q > 0) {
+ r = 1;
+ break;
+ }
- r = 0;
+ if (r == 0)
+ r = q;
-finish:
- free(alias_path);
+ } else if (de->d_type == DT_LNK) {
+ char *p, *dest;
+ bool found_path, found_dest, b = false;
+ int q;
- return r;
-}
+ /* Acquire symlink name */
+ p = path_make_absolute(de->d_name, path);
+ if (!p) {
+ r = -ENOMEM;
+ break;
+ }
-static int install_info_symlink_wants(InstallInfo *i, const char *config_path) {
- char **s;
- char *alias_path = NULL;
- int r;
+ /* Acquire symlink destination */
+ q = readlink_and_canonicalize(p, &dest);
+ if (q < 0) {
+ free(p);
- assert(i);
+ if (q == -ENOENT)
+ continue;
- STRV_FOREACH(s, i->wanted_by) {
- if (!unit_name_valid(*s)) {
- log_error("Invalid name %s.", *s);
- r = -EINVAL;
- goto finish;
- }
+ if (r == 0)
+ r = q;
+ continue;
+ }
- free(alias_path);
- alias_path = NULL;
+ /* 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);
- if (asprintf(&alias_path, "%s/%s.wants/%s", config_path, *s, i->name) < 0) {
- log_error("Out of memory");
- r = -ENOMEM;
- goto finish;
- }
+ /* 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(file_name_from_path(dest), name);
- if ((r = create_symlink(i->path, alias_path)) != 0)
- goto finish;
+ free(dest);
+
+ if (found_path && found_dest) {
+ char *t;
- if (arg_action == ACTION_DISABLE) {
- char *t;
+ /* Filter out same name links in the main
+ * config path */
+ t = path_make_absolute(name, config_path);
+ if (!t) {
+ free(p);
+ r = -ENOMEM;
+ break;
+ }
- /* Try to remove .wants dir if we don't need it anymore */
- if (asprintf(&t, "%s/%s.wants", config_path, *s) >= 0) {
- rmdir(t);
+ b = path_equal(t, p);
free(t);
}
+
+ free(p);
+
+ if (b)
+ *same_name_link = true;
+ else if (found_path || found_dest) {
+ r = 1;
+ break;
+ }
}
}
- r = 0;
-
-finish:
- free(alias_path);
+ closedir(d);
return r;
}
-static int install_info_apply(LookupPaths *paths, InstallInfo *i, const char *config_path) {
+static int find_symlinks(
+ const char *name,
+ const char *config_path,
+ bool *same_name_link) {
- const ConfigItem items[] = {
- { "Alias", config_parse_strv, &i->aliases, "Install" },
- { "WantedBy", config_parse_strv, &i->wanted_by, "Install" },
- { "Also", config_parse_also, NULL, "Install" },
+ int fd;
- { NULL, NULL, NULL, NULL }
- };
+ assert(name);
+ assert(config_path);
+ assert(same_name_link);
- char **p;
- char *filename = NULL;
- FILE *f = NULL;
- int r;
+ fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
+ if (fd < 0)
+ return -errno;
- assert(paths);
- assert(i);
+ /* This takes possession of fd and closes it */
+ return find_symlinks_fd(name, fd, config_path, config_path, same_name_link);
+}
- STRV_FOREACH(p, paths->unit_path) {
+static int find_symlinks_in_scope(
+ UnitFileScope scope,
+ const char *root_dir,
+ const char *name,
+ UnitFileState *state) {
- if (!(filename = path_make_absolute(i->name, *p))) {
- log_error("Out of memory");
- return -ENOMEM;
- }
+ int r;
+ char *path;
+ bool same_name_link_runtime = false, same_name_link = false;
- if ((f = fopen(filename, "re")))
- break;
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(name);
+
+ if (scope == UNIT_FILE_SYSTEM || scope == UNIT_FILE_GLOBAL) {
+
+ /* First look in runtime config path */
+ r = get_config_path(scope, true, root_dir, &path);
+ if (r < 0)
+ return r;
- free(filename);
- filename = NULL;
+ r = find_symlinks(name, path, &same_name_link_runtime);
+ free(path);
- if (errno != ENOENT) {
- log_error("Failed to open %s: %m", filename);
- return -errno;
+ if (r < 0)
+ return r;
+ else if (r > 0) {
+ *state = UNIT_FILE_ENABLED_RUNTIME;
+ return r;
}
}
- if (!f) {
- log_error("Couldn't find %s.", i->name);
- return -ENOENT;
- }
+ /* Then look in the normal config path */
+ r = get_config_path(scope, false, root_dir, &path);
+ if (r < 0)
+ return r;
- i->path = filename;
+ r = find_symlinks(name, path, &same_name_link);
+ free(path);
- if ((r = config_parse(filename, f, NULL, items, true, i)) < 0) {
- fclose(f);
+ if (r < 0)
+ return r;
+ else if (r > 0) {
+ *state = UNIT_FILE_ENABLED;
return r;
}
- fclose(f);
+ /* Hmm, we didn't find it, but maybe we found the same name
+ * link? */
+ if (same_name_link_runtime) {
+ *state = UNIT_FILE_LINKED_RUNTIME;
+ return 1;
+ } else if (same_name_link) {
+ *state = UNIT_FILE_LINKED;
+ return 1;
+ }
- if ((r = install_info_symlink_alias(i, config_path)) != 0)
- return r;
+ 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, *prefix;
+ int r;
- if ((r = install_info_symlink_wants(i, config_path)) != 0)
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ r = get_config_path(scope, runtime, root_dir, &prefix);
+ if (r < 0)
return r;
- return 0;
-}
+ STRV_FOREACH(i, files) {
+ char *path;
-static char *get_config_path(void) {
+ if (!unit_name_is_valid_no_type(*i, true)) {
+ if (r == 0)
+ r = -EINVAL;
+ continue;
+ }
- switch (arg_where) {
+ path = path_make_absolute(*i, prefix);
+ if (!path) {
+ r = -ENOMEM;
+ break;
+ }
- case WHERE_SYSTEM:
- return strdup(SYSTEM_CONFIG_UNIT_PATH);
+ if (symlink("/dev/null", path) >= 0) {
+ add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null");
- case WHERE_GLOBAL:
- return strdup(SESSION_CONFIG_UNIT_PATH);
+ free(path);
+ continue;
+ }
- case WHERE_SESSION: {
- char *p;
+ if (errno == EEXIST) {
- if (session_config_home(&p) < 0)
- return NULL;
+ if (null_or_empty_path(path) > 0) {
+ free(path);
+ continue;
+ }
- return p;
- }
+ if (force) {
+ unlink(path);
- default:
- assert_not_reached("Unknown config path.");
- }
-}
+ if (symlink("/dev/null", path) >= 0) {
-int main(int argc, char *argv[]) {
- int r, retval = 1, j;
- LookupPaths paths;
- InstallInfo *i;
- char *config_path = NULL;
+ add_file_change(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
+ add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null");
- zero(paths);
+ free(path);
+ continue;
+ }
+ }
- log_parse_environment();
+ if (r == 0)
+ r = -EEXIST;
+ } else {
+ if (r == 0)
+ r = -errno;
+ }
- if ((r = parse_argv(argc, argv)) < 0)
- goto finish;
- else if (r == 0) {
- retval = 0;
- goto finish;
+ free(path);
}
- if ((r = lookup_paths_init(&paths, arg_where == WHERE_SYSTEM ? MANAGER_INIT : MANAGER_SESSION)) < 0) {
- log_error("Failed to determine lookup paths: %s", strerror(-r));
- goto finish;
- }
+ free(prefix);
- if (!(config_path = get_config_path())) {
- log_error("Failed to determine config path");
- goto finish;
- }
+ return r;
+}
+
+int unit_file_unmask(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char *files[],
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ char **i, *config_path = NULL;
+ int r, q;
+ Set *remove_symlinks_to = NULL;
- will_install = hashmap_new(string_hash_func, string_compare_func);
- have_installed = hashmap_new(string_hash_func, string_compare_func);
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
- if (!will_install || !have_installed) {
- log_error("Failed to allocate unit sets.");
+ r = get_config_path(scope, runtime, root_dir, &config_path);
+ if (r < 0)
goto finish;
- }
- for (j = optind; j < argc; j++)
- if ((r = install_info_add(argv[j])) < 0)
- goto finish;
+ STRV_FOREACH(i, files) {
+ char *path;
+
+ if (!unit_name_is_valid_no_type(*i, true)) {
+ if (r == 0)
+ r = -EINVAL;
+ continue;
+ }
- while ((i = hashmap_first(will_install))) {
- assert_se(hashmap_move_one(have_installed, will_install, i->name) == 0);
+ path = path_make_absolute(*i, config_path);
+ if (!path) {
+ r = -ENOMEM;
+ break;
+ }
- if ((r = install_info_apply(&paths, i, config_path)) != 0) {
+ q = null_or_empty_path(path);
+ if (q > 0) {
+ if (unlink(path) >= 0) {
+ mark_symlink_for_removal(&remove_symlinks_to, path);
+ add_file_change(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
- if (r < 0)
- goto finish;
+ free(path);
+ continue;
+ }
- /* In test mode and found something */
- retval = 0;
- goto finish;
+ q = -errno;
}
+
+ if (q != -ENOENT && r == 0)
+ r = q;
+
+ free(path);
}
- retval = arg_action == ACTION_TEST ? 1 : 0;
finish:
- install_info_hashmap_free(will_install);
- install_info_hashmap_free(have_installed);
+ q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes);
+ if (r == 0)
+ r = q;
+ set_free_free(remove_symlinks_to);
+ free(config_path);
+
+ return r;
+}
+
+int unit_file_link(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char *files[],
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ LookupPaths paths;
+ char **i, *config_path = NULL;
+ int r, q;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ zero(paths);
+
+ r = lookup_paths_init_from_scope(&paths, scope);
+ if (r < 0)
+ return r;
+
+ r = get_config_path(scope, runtime, root_dir, &config_path);
+ if (r < 0)
+ goto finish;
+
+ STRV_FOREACH(i, files) {
+ char *path, *fn;
+ struct stat st;
+
+ fn = file_name_from_path(*i);
+
+ if (!path_is_absolute(*i) ||
+ !unit_name_is_valid_no_type(fn, true)) {
+ 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) {
+ r = q;
+ break;
+ }
+
+ if (q > 0)
+ continue;
+
+ path = path_make_absolute(fn, config_path);
+ if (!path) {
+ r = -ENOMEM;
+ break;
+ }
+
+ if (symlink(*i, path) >= 0) {
+ add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, *i);
+
+ free(path);
+ continue;
+ }
+
+ if (errno == EEXIST) {
+ char *dest = NULL;
+
+ q = readlink_and_make_absolute(path, &dest);
+
+ if (q < 0 && errno != ENOENT) {
+ free(path);
+
+ if (r == 0)
+ r = q;
+
+ continue;
+ }
+
+ if (q >= 0 && path_equal(dest, *i)) {
+ free(dest);
+ free(path);
+ continue;
+ }
+
+ free(dest);
+
+ if (force) {
+ unlink(path);
+
+ if (symlink(*i, path) >= 0) {
+
+ add_file_change(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
+ add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, path, *i);
+
+ free(path);
+ continue;
+ }
+ }
+
+ if (r == 0)
+ r = -EEXIST;
+ } else {
+ if (r == 0)
+ r = -errno;
+ }
+
+ free(path);
+ }
+
+ finish:
+ lookup_paths_free(&paths);
+ free(config_path);
+
+ 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);
+}
+
+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(InstallInfo *i) {
+ assert(i);
+
+ free(i->name);
+ free(i->path);
+ strv_free(i->aliases);
+ strv_free(i->wanted_by);
+ free(i);
+}
+
+static void install_info_hashmap_free(Hashmap *m) {
+ InstallInfo *i;
+
+ if (!m)
+ return;
+
+ while ((i = hashmap_steal_first(m)))
+ install_info_free(i);
+
+ 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) {
+ InstallInfo *i = NULL;
+ int r;
+
+ assert(c);
+ assert(name || path);
+
+ if (!name)
+ name = file_name_from_path(path);
+
+ if (!unit_name_is_valid_no_type(name, true))
+ return -EINVAL;
+
+ if (hashmap_get(c->have_installed, name) ||
+ hashmap_get(c->will_install, name))
+ return 0;
+
+ r = hashmap_ensure_allocated(&c->will_install, string_hash_func, string_compare_func);
+ if (r < 0)
+ return r;
+
+ i = new0(InstallInfo, 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 = 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(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ char *w;
+ size_t l;
+ char *state;
+ InstallContext *c = data;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ FOREACH_WORD_QUOTED(w, l, rvalue, state) {
+ char *n;
+ int r;
+
+ n = strndup(w, l);
+ if (!n)
+ return -ENOMEM;
+
+ r = install_info_add(c, n, NULL);
+ if (r < 0) {
+ free(n);
+ return r;
+ }
+
+ free(n);
+ }
+
+ return 0;
+}
+
+static int unit_file_load(
+ InstallContext *c,
+ InstallInfo *info,
+ const char *path,
+ bool allow_symlink) {
+
+ const ConfigTableItem items[] = {
+ { "Install", "Alias", config_parse_strv, 0, &info->aliases },
+ { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by },
+ { "Install", "Also", config_parse_also, 0, c },
+ { NULL, NULL, NULL, 0, NULL }
+ };
+
+ int fd;
+ FILE *f;
+ int r;
+
+ assert(c);
+ assert(info);
+ assert(path);
+
+ fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|(allow_symlink ? 0 : O_NOFOLLOW));
+ if (fd < 0)
+ return -errno;
+
+ f = fdopen(fd, "re");
+ if (!f) {
+ close_nointr_nofail(fd);
+ return -ENOMEM;
+ }
+
+ r = config_parse(path, f, NULL, config_item_table_lookup, (void*) items, true, info);
+ fclose(f);
+ if (r < 0)
+ return r;
+
+ return strv_length(info->aliases) + strv_length(info->wanted_by);
+}
+
+static int unit_file_search(
+ InstallContext *c,
+ InstallInfo *info,
+ LookupPaths *paths,
+ const char *root_dir,
+ bool allow_symlink) {
+
+ char **p;
+ int r;
+
+ assert(c);
+ assert(info);
+ assert(paths);
+
+ if (info->path)
+ return unit_file_load(c, info, info->path, allow_symlink);
+
+ assert(info->name);
+
+ STRV_FOREACH(p, paths->unit_path) {
+ char *path = NULL;
+
+ if (isempty(root_dir))
+ asprintf(&path, "%s/%s", *p, info->name);
+ else
+ asprintf(&path, "%s/%s/%s", root_dir, *p, info->name);
+
+ if (!path)
+ return -ENOMEM;
+
+ r = unit_file_load(c, info, path, allow_symlink);
+
+ if (r >= 0)
+ info->path = path;
+ else
+ free(path);
+
+ if (r != -ENOENT && r != -ELOOP)
+ return r;
+ }
+
+ return -ENOENT;
+}
+
+static int unit_file_can_install(
+ LookupPaths *paths,
+ const char *root_dir,
+ const char *name,
+ bool allow_symlink) {
+
+ InstallContext c;
+ InstallInfo *i;
+ int r;
+
+ assert(paths);
+ assert(name);
+
+ zero(c);
+
+ r = install_info_add_auto(&c, name);
+ if (r < 0)
+ return r;
+
+ assert_se(i = hashmap_first(c.will_install));
+
+ r = unit_file_search(&c, i, paths, root_dir, allow_symlink);
+
+ if (r >= 0)
+ r = strv_length(i->aliases) + strv_length(i->wanted_by);
+
+ install_context_done(&c);
+
+ return r;
+}
+
+static int create_symlink(
+ const char *old_path,
+ const char *new_path,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ char *dest;
+ int r;
+
+ assert(old_path);
+ assert(new_path);
+
+ mkdir_parents(new_path, 0755);
+
+ if (symlink(old_path, new_path) >= 0) {
+ add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
+ return 0;
+ }
+
+ if (errno != EEXIST)
+ return -errno;
+
+ r = readlink_and_make_absolute(new_path, &dest);
+ if (r < 0)
+ return r;
+
+ if (path_equal(dest, old_path)) {
+ free(dest);
+ return 0;
+ }
+
+ free(dest);
+
+ if (force)
+ return -EEXIST;
+
+ unlink(new_path);
+
+ if (symlink(old_path, new_path) >= 0) {
+ add_file_change(changes, n_changes, UNIT_FILE_UNLINK, new_path, NULL);
+ add_file_change(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
+ return 0;
+ }
+
+ return -errno;
+}
+
+static int install_info_symlink_alias(
+ InstallInfo *i,
+ const char *config_path,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ char **s;
+ int r = 0, q;
+
+ assert(i);
+ assert(config_path);
+
+ STRV_FOREACH(s, i->aliases) {
+ char *alias_path;
+
+ alias_path = path_make_absolute(*s, config_path);
+
+ if (!alias_path)
+ return -ENOMEM;
+
+ q = create_symlink(i->path, alias_path, force, changes, n_changes);
+ free(alias_path);
+
+ if (r == 0)
+ r = q;
+ }
+
+ return r;
+}
+
+static int install_info_symlink_wants(
+ InstallInfo *i,
+ const char *config_path,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ char **s;
+ int r = 0, q;
+
+ assert(i);
+ assert(config_path);
+
+ STRV_FOREACH(s, i->wanted_by) {
+ char *path;
+
+ if (!unit_name_is_valid_no_type(*s, true)) {
+ r = -EINVAL;
+ continue;
+ }
+
+ if (asprintf(&path, "%s/%s.wants/%s", config_path, *s, i->name) < 0)
+ return -ENOMEM;
+
+ q = create_symlink(i->path, path, force, changes, n_changes);
+ free(path);
+
+ if (r == 0)
+ r = q;
+ }
+
+ return r;
+}
+
+static int install_info_symlink_link(
+ InstallInfo *i,
+ LookupPaths *paths,
+ const char *config_path,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ int r;
+ char *path;
+
+ assert(i);
+ assert(paths);
+ assert(config_path);
+ assert(i->path);
+
+ r = in_search_path(i->path, paths->unit_path);
+ if (r != 0)
+ return r;
+
+ if (asprintf(&path, "%s/%s", config_path, i->name) < 0)
+ return -ENOMEM;
+
+ r = create_symlink(i->path, path, force, changes, n_changes);
+ free(path);
+
+ return r;
+}
+
+static int install_info_apply(
+ InstallInfo *i,
+ LookupPaths *paths,
+ const char *config_path,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ int r, q;
+
+ assert(i);
+ assert(paths);
+ assert(config_path);
+
+ r = install_info_symlink_alias(i, config_path, force, changes, n_changes);
+
+ q = install_info_symlink_wants(i, config_path, force, changes, n_changes);
+ if (r == 0)
+ r = q;
+
+ q = install_info_symlink_link(i, paths, config_path, force, changes, n_changes);
+ if (r == 0)
+ r = q;
+
+ return r;
+}
+
+static int install_context_apply(
+ InstallContext *c,
+ LookupPaths *paths,
+ const char *config_path,
+ const char *root_dir,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ InstallInfo *i;
+ int r = 0, q;
+
+ assert(c);
+ assert(paths);
+ assert(config_path);
+
+ while ((i = hashmap_first(c->will_install))) {
+
+ q = hashmap_ensure_allocated(&c->have_installed, string_hash_func, string_compare_func);
+ if (q < 0)
+ return q;
+
+ assert_se(hashmap_move_one(c->have_installed, c->will_install, i->name) == 0);
+
+ q = unit_file_search(c, i, paths, root_dir, false);
+ if (q < 0) {
+ if (r >= 0)
+ r = q;
+
+ return r;
+ } else if (r >= 0)
+ r += q;
+
+ q = install_info_apply(i, paths, config_path, force, changes, n_changes);
+ if (r >= 0 && q < 0)
+ r = q;
+ }
+
+ return r;
+}
+
+static int install_context_mark_for_removal(
+ InstallContext *c,
+ LookupPaths *paths,
+ Set **remove_symlinks_to,
+ const char *config_path,
+ const char *root_dir) {
+
+ InstallInfo *i;
+ int r = 0, q;
+
+ assert(c);
+ assert(paths);
+ assert(config_path);
+
+ /* Marks all items for removal */
+
+ while ((i = hashmap_first(c->will_install))) {
+
+ q = hashmap_ensure_allocated(&c->have_installed, string_hash_func, string_compare_func);
+ if (q < 0)
+ return q;
+
+ assert_se(hashmap_move_one(c->have_installed, c->will_install, i->name) == 0);
+
+ q = unit_file_search(c, i, paths, root_dir, false);
+ if (q < 0) {
+ if (r >= 0)
+ r = q;
+
+ return r;
+ } else if (r >= 0)
+ r += q;
+
+ q = mark_symlink_for_removal(remove_symlinks_to, i->name);
+ if (r >= 0 && q < 0)
+ r = q;
+ }
+
+ return r;
+}
+
+int unit_file_enable(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char *files[],
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ LookupPaths paths;
+ InstallContext c;
+ char **i, *config_path = NULL;
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ zero(paths);
+ zero(c);
+
+ r = lookup_paths_init_from_scope(&paths, scope);
+ if (r < 0)
+ return r;
+
+ r = get_config_path(scope, runtime, root_dir, &config_path);
+ if (r < 0)
+ goto finish;
+
+ STRV_FOREACH(i, files) {
+ r = install_info_add_auto(&c, *i);
+ if (r < 0)
+ goto finish;
+ }
+
+ /* 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 hat any
+ installation data at all. */
+ r = install_context_apply(&c, &paths, config_path, root_dir, force, changes, n_changes);
+
+finish:
+ install_context_done(&c);
+ lookup_paths_free(&paths);
+ free(config_path);
+
+ return r;
+}
+
+int unit_file_disable(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char *files[],
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ LookupPaths paths;
+ InstallContext c;
+ char **i, *config_path = NULL;
+ Set *remove_symlinks_to = NULL;
+ int r, q;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ zero(paths);
+ zero(c);
+
+ r = lookup_paths_init_from_scope(&paths, scope);
+ if (r < 0)
+ return r;
+
+ r = get_config_path(scope, runtime, root_dir, &config_path);
+ if (r < 0)
+ goto finish;
+
+ STRV_FOREACH(i, files) {
+ r = install_info_add_auto(&c, *i);
+ if (r < 0)
+ goto finish;
+ }
+
+ 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);
+ if (r == 0)
+ r = q;
+
+finish:
+ install_context_done(&c);
+ lookup_paths_free(&paths);
+ set_free_free(remove_symlinks_to);
+ free(config_path);
+
+ return r;
+}
+
+int unit_file_reenable(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char *files[],
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ LookupPaths paths;
+ InstallContext c;
+ char **i, *config_path = NULL;
+ Set *remove_symlinks_to = NULL;
+ int r, q;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ zero(paths);
+ zero(c);
+
+ r = lookup_paths_init_from_scope(&paths, scope);
+ if (r < 0)
+ return r;
+
+ r = get_config_path(scope, runtime, root_dir, &config_path);
+ if (r < 0)
+ goto finish;
+
+ STRV_FOREACH(i, files) {
+ r = mark_symlink_for_removal(&remove_symlinks_to, *i);
+ if (r < 0)
+ goto finish;
+
+ r = install_info_add_auto(&c, *i);
+ if (r < 0)
+ goto finish;
+ }
+
+ r = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes);
+
+ /* Returns number of symlinks that where supposed to be installed. */
+ q = install_context_apply(&c, &paths, config_path, root_dir, force, changes, n_changes);
+ if (r == 0)
+ r = q;
+
+finish:
+ lookup_paths_free(&paths);
+ install_context_done(&c);
+ set_free_free(remove_symlinks_to);
+ free(config_path);
+
+ return r;
+}
+
+UnitFileState unit_file_get_state(
+ UnitFileScope scope,
+ const char *root_dir,
+ const char *name) {
+
+ LookupPaths paths;
+ UnitFileState state = _UNIT_FILE_STATE_INVALID;
+ char **i, *path = NULL;
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(name);
+
+ zero(paths);
+
+ if (root_dir && scope != UNIT_FILE_SYSTEM)
+ return -EINVAL;
+
+ if (!unit_name_is_valid_no_type(name, true))
+ return -EINVAL;
+
+ r = lookup_paths_init_from_scope(&paths, scope);
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(i, paths.unit_path) {
+ struct stat st;
+
+ free(path);
+ path = NULL;
+
+ if (root_dir)
+ asprintf(&path, "%s/%s/%s", root_dir, *i, name);
+ else
+ asprintf(&path, "%s/%s", *i, name);
+
+ if (!path) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (lstat(path, &st) < 0) {
+ if (errno == ENOENT)
+ continue;
+
+ r = -errno;
+ goto finish;
+ }
+
+ if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode)) {
+ r = -ENOENT;
+ goto finish;
+ }
+
+ r = null_or_empty_path(path);
+ if (r < 0 && r != -ENOENT)
+ goto finish;
+ else if (r > 0) {
+ state = path_startswith(*i, "/run") ?
+ UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED;
+ r = 0;
+ goto finish;
+ }
+
+ r = find_symlinks_in_scope(scope, root_dir, name, &state);
+ if (r < 0) {
+ goto finish;
+ } else if (r > 0) {
+ r = 0;
+ goto finish;
+ }
+
+ r = unit_file_can_install(&paths, root_dir, path, true);
+ if (r < 0 && errno != -ENOENT)
+ goto finish;
+ else if (r > 0) {
+ state = UNIT_FILE_DISABLED;
+ r = 0;
+ goto finish;
+ } else if (r == 0) {
+ state = UNIT_FILE_STATIC;
+ r = 0;
+ goto finish;
+ }
+ }
+
+finish:
lookup_paths_free(&paths);
+ free(path);
+
+ return r < 0 ? r : state;
+}
+
+int unit_file_query_preset(UnitFileScope scope, const char *name) {
+ char **files, **i;
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(name);
+
+ if (scope == UNIT_FILE_SYSTEM)
+ r = conf_files_list(&files, ".preset",
+ "/etc/systemd/system.preset",
+ "/usr/local/lib/systemd/system.preset",
+ "/usr/lib/systemd/system.preset",
+ "/lib/systemd/system.preset",
+ NULL);
+ else if (scope == UNIT_FILE_GLOBAL)
+ r = conf_files_list(&files, ".preset",
+ "/etc/systemd/user.preset",
+ "/usr/local/lib/systemd/user.preset",
+ "/usr/lib/systemd/user.preset",
+ NULL);
+ else
+ return 1;
+
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(i, files) {
+ FILE *f;
+
+ f = fopen(*i, "re");
+ if (!f) {
+ if (errno == ENOENT)
+ continue;
+
+ r = -errno;
+ goto finish;
+ }
+
+ for (;;) {
+ char line[LINE_MAX], *l;
+
+ if (!fgets(line, sizeof(line), f))
+ break;
+
+ l = strstrip(line);
+ if (!*l)
+ continue;
+
+ if (strchr(COMMENTS, *l))
+ continue;
+
+ if (first_word(l, "enable")) {
+ l += 6;
+ l += strspn(l, WHITESPACE);
+
+ if (fnmatch(l, name, FNM_NOESCAPE) == 0) {
+ r = 1;
+ fclose(f);
+ goto finish;
+ }
+ } else if (first_word(l, "disable")) {
+ l += 7;
+ l += strspn(l, WHITESPACE);
+
+ if (fnmatch(l, name, FNM_NOESCAPE) == 0) {
+ r = 0;
+ fclose(f);
+ goto finish;
+ }
+ } else
+ log_debug("Couldn't parse line '%s'", l);
+ }
+
+ fclose(f);
+ }
+
+ /* Default is "enable" */
+ r = 1;
+
+finish:
+ strv_free(files);
+
+ return r;
+}
+
+int unit_file_preset(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char *files[],
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ LookupPaths paths;
+ InstallContext plus, minus;
+ char **i, *config_path = NULL;
+ Set *remove_symlinks_to = NULL;
+ int r, q;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ zero(paths);
+ zero(plus);
+ zero(minus);
+
+ r = lookup_paths_init_from_scope(&paths, scope);
+ if (r < 0)
+ return r;
+
+ r = get_config_path(scope, runtime, root_dir, &config_path);
+ if (r < 0)
+ goto finish;
+
+ STRV_FOREACH(i, files) {
+
+ if (!unit_name_is_valid_no_type(*i, true)) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ r = unit_file_query_preset(scope, *i);
+ if (r < 0)
+ goto finish;
+
+ if (r)
+ r = install_info_add_auto(&plus, *i);
+ else
+ r = install_info_add_auto(&minus, *i);
+
+ if (r < 0)
+ goto finish;
+ }
+
+ 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);
+ if (r == 0)
+ r = 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;
+
+finish:
+ lookup_paths_free(&paths);
+ install_context_done(&plus);
+ install_context_done(&minus);
+ set_free_free(remove_symlinks_to);
free(config_path);
- return retval;
+ return r;
+}
+
+int unit_file_get_list(
+ UnitFileScope scope,
+ const char *root_dir,
+ Hashmap *h) {
+
+ LookupPaths paths;
+ char **i, *buf = NULL;
+ DIR *d = NULL;
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(h);
+
+ zero(paths);
+
+ if (root_dir && scope != UNIT_FILE_SYSTEM)
+ return -EINVAL;
+
+ r = lookup_paths_init_from_scope(&paths, scope);
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(i, paths.unit_path) {
+ struct dirent buffer, *de;
+ const char *units_dir;
+
+ free(buf);
+ buf = NULL;
+
+ if (root_dir) {
+ if (asprintf(&buf, "%s/%s", root_dir, *i) < 0) {
+ r = -ENOMEM;
+ goto finish;
+ }
+ units_dir = buf;
+ } else
+ units_dir = *i;
+
+ if (d)
+ closedir(d);
+
+ d = opendir(units_dir);
+ if (!d) {
+ if (errno == ENOENT)
+ continue;
+
+ r = -errno;
+ goto finish;
+ }
+
+ for (;;) {
+ UnitFileList *f;
+
+ r = readdir_r(d, &buffer, &de);
+ if (r != 0) {
+ r = -r;
+ goto finish;
+ }
+
+ if (!de)
+ break;
+
+ if (ignore_file(de->d_name))
+ continue;
+
+ if (!unit_name_is_valid_no_type(de->d_name, true))
+ continue;
+
+ if (hashmap_get(h, de->d_name))
+ continue;
+
+ r = dirent_ensure_type(d, de);
+ if (r < 0) {
+ if (errno == ENOENT)
+ continue;
+
+ goto finish;
+ }
+
+ if (de->d_type != DT_LNK && de->d_type != DT_REG)
+ continue;
+
+ f = new0(UnitFileList, 1);
+ if (!f) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ f->path = path_make_absolute(de->d_name, units_dir);
+ if (!f->path) {
+ free(f);
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ r = null_or_empty_path(f->path);
+ if (r < 0 && r != -ENOENT) {
+ free(f->path);
+ free(f);
+ goto finish;
+ } 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);
+ if (r < 0) {
+ free(f->path);
+ free(f);
+ goto finish;
+ } else if (r > 0)
+ goto found;
+
+ r = unit_file_can_install(&paths, root_dir, f->path, true);
+ if (r < 0) {
+ free(f->path);
+ free(f);
+ goto finish;
+ } else if (r > 0) {
+ f->state = UNIT_FILE_DISABLED;
+ goto found;
+ } else {
+ f->state = UNIT_FILE_STATIC;
+ goto found;
+ }
+
+ free(f->path);
+ free(f);
+ continue;
+
+ found:
+ r = hashmap_put(h, file_name_from_path(f->path), f);
+ if (r < 0) {
+ free(f->path);
+ free(f);
+ goto finish;
+ }
+ }
+ }
+
+finish:
+ lookup_paths_free(&paths);
+ free(buf);
+
+ if (d)
+ closedir(d);
+
+ return r;
}
+
+static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = {
+ [UNIT_FILE_ENABLED] = "enabled",
+ [UNIT_FILE_ENABLED_RUNTIME] = "enabled-runtie",
+ [UNIT_FILE_LINKED] = "linked",
+ [UNIT_FILE_LINKED_RUNTIME] = "linked-runtime",
+ [UNIT_FILE_MASKED] = "masked",
+ [UNIT_FILE_MASKED_RUNTIME] = "masked-runtime",
+ [UNIT_FILE_STATIC] = "static",
+ [UNIT_FILE_DISABLED] = "disabled"
+};
+
+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",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, UnitFileChangeType);
~ianmdlvl / elogind.git / blobdiff