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-rw-r--r--src/shared/install-printf.c52
-rw-r--r--src/shared/install.c2006
-rw-r--r--src/shared/install.h50
3 files changed, 1139 insertions, 969 deletions
diff --git a/src/shared/install-printf.c b/src/shared/install-printf.c
index e1cb5d27ff..74b909d34d 100644
--- a/src/shared/install-printf.c
+++ b/src/shared/install-printf.c
@@ -67,42 +67,28 @@ static int specifier_instance(char specifier, void *data, void *userdata, char *
}
static int specifier_user_name(char specifier, void *data, void *userdata, char **ret) {
- UnitFileInstallInfo *i = userdata;
- const char *username;
- _cleanup_free_ char *tmp = NULL;
- char *printed = NULL;
-
- assert(i);
+ char *t;
- if (i->user)
- username = i->user;
- else
- /* get USER env from env or our own uid */
- username = tmp = getusername_malloc();
-
- switch (specifier) {
- case 'u':
- printed = strdup(username);
- break;
- case 'U': {
- /* fish username from passwd */
- uid_t uid;
- int r;
-
- r = get_user_creds(&username, &uid, NULL, NULL, NULL);
- if (r < 0)
- return r;
-
- if (asprintf(&printed, UID_FMT, uid) < 0)
- return -ENOMEM;
- break;
- }}
+ /* If we are UID 0 (root), this will not result in NSS,
+ * otherwise it might. This is good, as we want to be able to
+ * run this in PID 1, where our user ID is 0, but where NSS
+ * lookups are not allowed. */
+ t = getusername_malloc();
+ if (!t)
+ return -ENOMEM;
- *ret = printed;
+ *ret = t;
return 0;
}
+static int specifier_user_id(char specifier, void *data, void *userdata, char **ret) {
+
+ if (asprintf(ret, UID_FMT, getuid()) < 0)
+ return -ENOMEM;
+
+ return 0;
+}
int install_full_printf(UnitFileInstallInfo *i, const char *format, char **ret) {
@@ -114,8 +100,8 @@ int install_full_printf(UnitFileInstallInfo *i, const char *format, char **ret)
* %p: the prefix (foo)
* %i: the instance (bar)
- * %U the UID of the configured user or running user
- * %u the username of the configured user or running user
+ * %U the UID of the running user
+ * %u the username of running user
* %m the machine ID of the running system
* %H the host name of the running system
* %b the boot ID of the running system
@@ -128,7 +114,7 @@ int install_full_printf(UnitFileInstallInfo *i, const char *format, char **ret)
{ 'p', specifier_prefix, NULL },
{ 'i', specifier_instance, NULL },
- { 'U', specifier_user_name, NULL },
+ { 'U', specifier_user_id, NULL },
{ 'u', specifier_user_name, NULL },
{ 'm', specifier_machine_id, NULL },
diff --git a/src/shared/install.c b/src/shared/install.c
index b7d1d22505..9b6464ba9d 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -30,6 +30,7 @@
#include "conf-parser.h"
#include "dirent-util.h"
#include "fd-util.h"
+#include "fileio.h"
#include "fs-util.h"
#include "hashmap.h"
#include "install-printf.h"
@@ -46,13 +47,21 @@
#include "unit-name.h"
#include "util.h"
+#define UNIT_FILE_FOLLOW_SYMLINK_MAX 64
+
+typedef enum SearchFlags {
+ SEARCH_LOAD = 1,
+ SEARCH_FOLLOW_CONFIG_SYMLINKS = 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) {
_cleanup_free_ char *parent = NULL;
+ char **i;
assert(path);
@@ -60,7 +69,11 @@ static int in_search_path(const char *path, char **search) {
if (!parent)
return -ENOMEM;
- return strv_contains(search, parent);
+ STRV_FOREACH(i, search)
+ if (path_equal(parent, *i))
+ return true;
+
+ return false;
}
static int get_config_path(UnitFileScope scope, bool runtime, const char *root_dir, char **ret) {
@@ -71,6 +84,9 @@ static int get_config_path(UnitFileScope scope, bool runtime, const char *root_d
assert(scope < _UNIT_FILE_SCOPE_MAX);
assert(ret);
+ /* This determines where we shall create or remove our
+ * installation ("configuration") symlinks */
+
switch (scope) {
case UNIT_FILE_SYSTEM:
@@ -101,9 +117,10 @@ static int get_config_path(UnitFileScope scope, bool runtime, const char *root_d
r = user_runtime_dir(&p);
else
r = user_config_home(&p);
-
- if (r <= 0)
- return r < 0 ? r : -ENOENT;
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -ENOENT;
break;
@@ -118,6 +135,185 @@ static int get_config_path(UnitFileScope scope, bool runtime, const char *root_d
return 0;
}
+static bool is_config_path(UnitFileScope scope, const char *path) {
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(path);
+
+ /* Checks whether the specified path is intended for
+ * configuration or is outside of it */
+
+ switch (scope) {
+
+ case UNIT_FILE_SYSTEM:
+ case UNIT_FILE_GLOBAL:
+ return path_startswith(path, "/etc") ||
+ path_startswith(path, SYSTEM_CONFIG_UNIT_PATH) ||
+ path_startswith(path, "/run");
+
+
+ case UNIT_FILE_USER: {
+ _cleanup_free_ char *p = NULL;
+
+ r = user_config_home(&p);
+ if (r < 0)
+ return r;
+ if (r > 0 && path_startswith(path, p))
+ return true;
+
+ p = mfree(p);
+
+ r = user_runtime_dir(&p);
+ if (r < 0)
+ return r;
+ if (r > 0 && path_startswith(path, p))
+ return true;
+
+ return false;
+ }
+
+ default:
+ assert_not_reached("Bad scope");
+ }
+}
+
+
+static int verify_root_dir(UnitFileScope scope, const char **root_dir) {
+ int r;
+
+ assert(root_dir);
+
+ /* Verifies that the specified root directory to operate on
+ * makes sense. Reset it to NULL if it is the root directory
+ * or set to empty */
+
+ if (isempty(*root_dir) || path_equal(*root_dir, "/")) {
+ *root_dir = NULL;
+ return 0;
+ }
+
+ if (scope != UNIT_FILE_SYSTEM)
+ return -EINVAL;
+
+ r = is_dir(*root_dir, true);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -ENOTDIR;
+
+ return 0;
+}
+
+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 int create_symlink(
+ const char *old_path,
+ const char *new_path,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ _cleanup_free_ char *dest = NULL;
+ int r;
+
+ assert(old_path);
+ assert(new_path);
+
+ /* Actually create a symlink, and remember that we did. Is
+ * smart enough to check if there's already a valid symlink in
+ * place. */
+
+ 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 0;
+ }
+
+ if (errno != EEXIST)
+ return -errno;
+
+ r = readlink_malloc(new_path, &dest);
+ if (r < 0)
+ return r;
+
+ if (path_equal(dest, old_path))
+ return 0;
+
+ if (!force)
+ return -EEXIST;
+
+ r = symlink_atomic(old_path, new_path);
+ 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;
+}
+
static int mark_symlink_for_removal(
Set **remove_symlinks_to,
const char *p) {
@@ -138,10 +334,12 @@ static int mark_symlink_for_removal(
path_kill_slashes(n);
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(
@@ -149,19 +347,19 @@ static int remove_marked_symlinks_fd(
int fd,
const char *path,
const char *config_path,
- bool *deleted,
+ bool *restart,
UnitFileChange **changes,
- unsigned *n_changes,
- char** instance_whitelist) {
+ unsigned *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(restart);
d = fdopendir(fd);
if (!d) {
@@ -171,27 +369,13 @@ static int remove_marked_symlinks_fd(
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) {
@@ -210,42 +394,23 @@ static int remove_marked_symlinks_fd(
}
/* 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, 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;
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;
- q = readlink_and_canonicalize(p, &dest);
+ q = readlink_malloc(p, &dest);
if (q < 0) {
if (q == -ENOENT)
continue;
@@ -255,9 +420,15 @@ static int remove_marked_symlinks_fd(
continue;
}
+ /* 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_get(remove_symlinks_to, dest) ||
- set_get(remove_symlinks_to, basename(dest));
+ set_contains(remove_symlinks_to, dest) ||
+ set_contains(remove_symlinks_to, basename(dest)) ||
+ set_contains(remove_symlinks_to, de->d_name);
if (!found)
continue;
@@ -269,18 +440,15 @@ static int remove_marked_symlinks_fd(
}
path_kill_slashes(p);
- rmdir_parents(p, config_path);
- unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, p, NULL);
+ (void) rmdir_parents(p, config_path);
- if (!set_get(remove_symlinks_to, p)) {
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, p, NULL);
- q = mark_symlink_for_removal(&remove_symlinks_to, p);
- if (q < 0) {
- if (r == 0)
- r = q;
- } else
- *deleted = true;
- }
+ q = mark_symlink_for_removal(&remove_symlinks_to, p);
+ if (q < 0)
+ return q;
+ if (q > 0)
+ *restart = true;
}
}
@@ -291,12 +459,11 @@ static int remove_marked_symlinks(
Set *remove_symlinks_to,
const char *config_path,
UnitFileChange **changes,
- unsigned *n_changes,
- char** instance_whitelist) {
+ unsigned *n_changes) {
_cleanup_close_ int fd = -1;
+ bool restart;
int r = 0;
- bool deleted;
assert(config_path);
@@ -309,32 +476,32 @@ static int remove_marked_symlinks(
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, &restart, changes, n_changes);
if (r == 0)
r = q;
- } while (deleted);
+ } while (restart);
return r;
}
static int find_symlinks_fd(
+ const char *root_dir,
const char *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(fd >= 0);
@@ -348,25 +515,13 @@ static int find_symlinks_fd(
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) {
@@ -385,7 +540,7 @@ static int find_symlinks_fd(
}
/* 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, name, nfd, p, config_path, same_name_link);
if (q > 0)
return 1;
if (r == 0)
@@ -402,16 +557,27 @@ static int find_symlinks_fd(
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;
}
+ /* Make absolute */
+ if (!path_is_absolute(dest)) {
+ char *x;
+
+ x = prefix_root(root_dir, dest);
+ if (!x)
+ return -ENOMEM;
+
+ free(dest);
+ dest = x;
+ }
+
/* Check if the symlink itself matches what we
* are looking for */
if (path_is_absolute(name))
@@ -444,9 +610,12 @@ static int find_symlinks_fd(
return 1;
}
}
+
+ return r;
}
static int find_symlinks(
+ const char *root_dir,
const char *name,
const char *config_path,
bool *same_name_link) {
@@ -465,7 +634,7 @@ static int find_symlinks(
}
/* 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, name, fd, config_path, config_path, same_name_link);
}
static int find_symlinks_in_scope(
@@ -474,350 +643,59 @@ static int find_symlinks_in_scope(
const char *name,
UnitFileState *state) {
- int r;
_cleanup_free_ char *normal_path = NULL, *runtime_path = NULL;
bool same_name_link_runtime = false, same_name_link = false;
+ int r;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
assert(name);
- /* First look in runtime config path */
- r = get_config_path(scope, true, root_dir, &normal_path);
+ /* First look in the normal config path */
+ r = get_config_path(scope, false, root_dir, &normal_path);
if (r < 0)
return r;
- r = find_symlinks(name, normal_path, &same_name_link_runtime);
+ r = find_symlinks(root_dir, name, normal_path, &same_name_link);
if (r < 0)
return r;
- else if (r > 0) {
- *state = UNIT_FILE_ENABLED_RUNTIME;
+ if (r > 0) {
+ *state = UNIT_FILE_ENABLED;
return r;
}
- /* Then look in the normal config path */
- r = get_config_path(scope, false, root_dir, &runtime_path);
+ /* Then look in runtime config path */
+ r = get_config_path(scope, true, root_dir, &runtime_path);
if (r < 0)
return r;
- r = find_symlinks(name, runtime_path, &same_name_link);
+ r = find_symlinks(root_dir, name, runtime_path, &same_name_link_runtime);
if (r < 0)
return r;
- else if (r > 0) {
- *state = UNIT_FILE_ENABLED;
+ if (r > 0) {
+ *state = UNIT_FILE_ENABLED_RUNTIME;
return r;
}
/* 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) {
+ 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;
-
- assert(scope >= 0);
- assert(scope < _UNIT_FILE_SCOPE_MAX);
-
- r = get_config_path(scope, runtime, root_dir, &prefix);
- if (r < 0)
- return r;
-
- STRV_FOREACH(i, files) {
- _cleanup_free_ char *path = NULL;
-
- if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) {
- if (r == 0)
- r = -EINVAL;
- continue;
- }
-
- path = path_make_absolute(*i, prefix);
- if (!path) {
- r = -ENOMEM;
- break;
- }
-
- if (symlink("/dev/null", path) >= 0) {
- unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, path, "/dev/null");
- continue;
- }
-
- if (errno == EEXIST) {
-
- if (null_or_empty_path(path) > 0)
- continue;
-
- 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;
- }
- }
-
- if (r == 0)
- r = -EEXIST;
- } else {
- if (r == 0)
- r = -errno;
- }
- }
-
- 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;
-
- assert(scope >= 0);
- assert(scope < _UNIT_FILE_SCOPE_MAX);
-
- r = get_config_path(scope, runtime, root_dir, &config_path);
- if (r < 0)
- goto finish;
-
- STRV_FOREACH(i, files) {
- _cleanup_free_ char *path = NULL;
-
- if (!unit_name_is_valid(*i, UNIT_NAME_ANY)) {
- if (r == 0)
- r = -EINVAL;
- continue;
- }
-
- path = path_make_absolute(*i, config_path);
- if (!path) {
- r = -ENOMEM;
- break;
- }
-
- 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 (q != -ENOENT && r == 0)
- r = q;
- }
-
-
-finish:
- q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, files);
- 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) {
-
- _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);
+ if (same_name_link_runtime) {
+ *state = UNIT_FILE_LINKED_RUNTIME;
+ return 1;
}
- 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);
+static void install_info_free(UnitFileInstallInfo *i) {
- if (!changes)
+ if (!i)
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);
@@ -825,34 +703,45 @@ static void install_info_free(UnitFileInstallInfo *i) {
strv_free(i->required_by);
strv_free(i->also);
free(i->default_instance);
+ free(i->symlink_target);
free(i);
}
-static void install_info_hashmap_free(OrderedHashmap *m) {
+static OrderedHashmap* install_info_hashmap_free(OrderedHashmap *m) {
UnitFileInstallInfo *i;
if (!m)
- return;
+ return NULL;
while ((i = ordered_hashmap_steal_first(m)))
install_info_free(i);
- ordered_hashmap_free(m);
+ return 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_process = install_info_hashmap_free(c->will_process);
+ c->have_processed = install_info_hashmap_free(c->have_processed);
+}
+
+static UnitFileInstallInfo *install_info_find(InstallContext *c, const char *name) {
+ UnitFileInstallInfo *i;
+
+ i = ordered_hashmap_get(c->have_processed, name);
+ if (i)
+ return i;
- c->will_install = c->have_installed = NULL;
+ return ordered_hashmap_get(c->will_process, name);
}
static int install_info_add(
InstallContext *c,
const char *name,
- const char *path) {
+ const char *path,
+ UnitFileInstallInfo **ret) {
+
UnitFileInstallInfo *i = NULL;
int r;
@@ -865,17 +754,21 @@ static int install_info_add(
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))
+ i = install_info_find(c, name);
+ if (i) {
+ if (ret)
+ *ret = i;
return 0;
+ }
- r = ordered_hashmap_ensure_allocated(&c->will_install, &string_hash_ops);
+ r = ordered_hashmap_ensure_allocated(&c->will_process, &string_hash_ops);
if (r < 0)
return r;
i = new0(UnitFileInstallInfo, 1);
if (!i)
return -ENOMEM;
+ i->type = _UNIT_FILE_TYPE_INVALID;
i->name = strdup(name);
if (!i->name) {
@@ -891,30 +784,32 @@ static int install_info_add(
}
}
- r = ordered_hashmap_put(c->will_install, i->name, i);
+ r = ordered_hashmap_put(c->will_process, i->name, i);
if (r < 0)
goto fail;
+ if (ret)
+ *ret = i;
+
return 0;
fail:
- if (i)
- install_info_free(i);
-
+ install_info_free(i);
return r;
}
static int install_info_add_auto(
InstallContext *c,
- const char *name_or_path) {
+ const char *name_or_path,
+ UnitFileInstallInfo **ret) {
assert(c);
assert(name_or_path);
if (path_is_absolute(name_or_path))
- return install_info_add(c, NULL, name_or_path);
+ return install_info_add(c, NULL, name_or_path, ret);
else
- return install_info_add(c, name_or_path, NULL);
+ return install_info_add(c, name_or_path, NULL, ret);
}
static int config_parse_also(
@@ -929,64 +824,33 @@ static int config_parse_also(
void *data,
void *userdata) {
- InstallContext *c = data;
UnitFileInstallInfo *i = userdata;
+ InstallContext *c = data;
+ int r;
assert(filename);
assert(lvalue);
assert(rvalue);
- for(;;) {
- _cleanup_free_ char *n = NULL;
- int r;
-
- r = extract_first_word(&rvalue, &n, NULL, 0);
- if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse config %s, ignoring.", rvalue);
- return 0;
- }
+ for (;;) {
+ _cleanup_free_ char *word = NULL;
+ r = extract_first_word(&rvalue, &word, NULL, 0);
+ if (r < 0)
+ return r;
if (r == 0)
break;
- r = install_info_add(c, n, NULL);
+ r = install_info_add(c, word, NULL, NULL);
if (r < 0)
return r;
- r = strv_extend(&i->also, n);
+ r = strv_push(&i->also, word);
if (r < 0)
return r;
- }
-
- return 0;
-}
-static int config_parse_user(
- const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- UnitFileInstallInfo *i = data;
- char *printed;
- int r;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
-
- r = install_full_printf(i, rvalue, &printed);
- if (r < 0)
- return r;
-
- free(i->user);
- i->user = printed;
+ word = NULL;
+ }
return 0;
}
@@ -1031,9 +895,7 @@ 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 },
@@ -1041,34 +903,57 @@ static int unit_file_load(
{ "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 },
{}
};
_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);
+ path = prefix_roota(root_dir, path);
- if (!load) {
- r = access(path, F_OK) ? -errno : 0;
- return r;
+ 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|(allow_symlink ? 0 : O_NOFOLLOW));
+ fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
if (fd < 0)
return -errno;
+ if (fstat(fd, &st) < 0)
+ return -errno;
+ if (null_or_empty(&st)) {
+ info->type = UNIT_FILE_MASKED;
+ return 0;
+ }
+ if (S_ISDIR(st.st_mode))
+ return -EISDIR;
+ if (!S_ISREG(st.st_mode))
+ return -ENOTTY;
f = fdopen(fd, "re");
- if (!f) {
- safe_close(fd);
- return -ENOMEM;
- }
+ if (!f)
+ return -errno;
+ fd = -1;
r = config_parse(NULL, path, f,
NULL,
@@ -1077,8 +962,7 @@ static int unit_file_load(
if (r < 0)
return r;
- if (also)
- *also = !strv_isempty(info->also);
+ info->type = UNIT_FILE_TYPE_REGULAR;
return
(int) strv_length(info->aliases) +
@@ -1086,14 +970,73 @@ static int unit_file_load(
(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 *np = NULL;
+ int r;
+
+ r = unit_file_load(c, info, path, root_dir, flags);
+ if (r != -ELOOP)
+ return r;
+
+ /* This is a symlink, let's read it. */
+
+ r = readlink_and_make_absolute_root(root_dir, path, &np);
+ if (r < 0)
+ return r;
+
+ if (path_equal(np, "/dev/null"))
+ info->type = UNIT_FILE_TYPE_MASKED;
+ else {
+ const char *bn;
+ UnitType a, b;
+
+ bn = basename(np);
+
+ 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;
+
+ info->type = UNIT_FILE_TYPE_SYMLINK;
+ info->symlink_target = np;
+ np = NULL;
+ }
+
+ 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) {
char **p;
int r;
@@ -1102,8 +1045,12 @@ static int unit_file_search(
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, root_dir, flags);
assert(info->name);
@@ -1114,14 +1061,15 @@ static int unit_file_search(
if (!path)
return -ENOMEM;
- r = unit_file_load(c, info, path, root_dir, allow_symlink, load, also);
- if (r >= 0) {
+ r = unit_file_load_or_readlink(c, info, path, root_dir, flags);
+ if (r < 0) {
+ if (r != -ENOENT)
+ return r;
+ } else {
info->path = path;
path = NULL;
return r;
}
- if (r != -ENOENT && r != -ELOOP)
- return r;
}
if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) {
@@ -1143,92 +1091,149 @@ static int unit_file_search(
if (!path)
return -ENOMEM;
- r = unit_file_load(c, info, path, root_dir, allow_symlink, load, also);
- if (r >= 0) {
+ r = unit_file_load_or_readlink(c, info, path, root_dir, flags);
+ if (r < 0) {
+ if (r != -ENOENT)
+ return r;
+ } else {
info->path = path;
path = NULL;
return r;
}
- if (r != -ENOENT && r != -ELOOP)
- return r;
}
}
return -ENOENT;
}
-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) {
+
+ 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 (!streq(basename(i->symlink_target), i->name))
+ return -EXDEV;
+
+ free(i->path);
+ i->path = i->symlink_target;
+ i->symlink_target = NULL;
+ i->type = _UNIT_FILE_TYPE_INVALID;
+
+ return unit_file_load_or_readlink(c, i, i->path, root_dir, flags);
+}
+
+static int install_info_traverse(
+ UnitFileScope scope,
+ InstallContext *c,
+ const char *root_dir,
+ 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, root_dir, 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) && is_config_path(scope, i->path))
+ return -ELOOP;
- return r;
-}
+ r = install_info_follow(c, i, root_dir, flags);
+ if (r < 0) {
+ _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) {
+ if (r != -EXDEV)
+ return r;
- _cleanup_free_ char *dest = NULL;
- int r;
+ /* Target has a different name, create a new
+ * install info object for that, and continue
+ * with that. */
- assert(old_path);
- assert(new_path);
+ bn = basename(i->symlink_target);
- mkdir_parents_label(new_path, 0755);
+ if (unit_name_is_valid(i->name, UNIT_NAME_INSTANCE) &&
+ unit_name_is_valid(bn, UNIT_NAME_TEMPLATE)) {
- if (symlink(old_path, new_path) >= 0) {
- unit_file_changes_add(changes, n_changes, UNIT_FILE_SYMLINK, new_path, old_path);
- return 0;
+ _cleanup_free_ char *instance = NULL;
+
+ 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;
+
+ bn = buffer;
+ }
+
+ r = install_info_add(c, bn, NULL, &i);
+ if (r < 0)
+ return r;
+
+ r = unit_file_search(c, i, paths, root_dir, flags);
+ if (r < 0)
+ return r;
+ }
+
+ /* Try again, with the new target we found. */
}
- if (errno != EEXIST)
- return -errno;
+ if (ret)
+ *ret = i;
- r = readlink_and_make_absolute(new_path, &dest);
- if (r < 0)
- return r;
+ return 0;
+}
- if (path_equal(dest, old_path))
- return 0;
+static int install_info_discover(
+ UnitFileScope scope,
+ InstallContext *c,
+ const char *root_dir,
+ const LookupPaths *paths,
+ const char *name,
+ SearchFlags flags,
+ UnitFileInstallInfo **ret) {
- if (!force)
- return -EEXIST;
+ UnitFileInstallInfo *i;
+ int r;
- r = symlink_atomic(old_path, new_path);
+ assert(c);
+ assert(paths);
+ assert(name);
+
+ r = install_info_add_auto(c, name, &i);
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_traverse(scope, c, root_dir, paths, i, flags, ret);
}
static int install_info_symlink_alias(
@@ -1363,6 +1368,9 @@ static int install_info_apply(
assert(paths);
assert(config_path);
+ if (i->type != UNIT_FILE_TYPE_REGULAR)
+ return 0;
+
r = install_info_symlink_alias(i, config_path, force, changes, n_changes);
q = install_info_symlink_wants(i, config_path, i->wanted_by, ".wants/", force, changes, n_changes);
@@ -1381,53 +1389,59 @@ static int install_info_apply(
}
static int install_context_apply(
+ UnitFileScope scope,
InstallContext *c,
const LookupPaths *paths,
const char *config_path,
const char *root_dir,
bool force,
+ SearchFlags flags,
UnitFileChange **changes,
unsigned *n_changes) {
UnitFileInstallInfo *i;
- int r, q;
+ int r;
assert(c);
assert(paths);
assert(config_path);
- if (!ordered_hashmap_isempty(c->will_install)) {
- r = ordered_hashmap_ensure_allocated(&c->have_installed, &string_hash_ops);
- if (r < 0)
- return r;
+ if (ordered_hashmap_isempty(c->will_process))
+ return 0;
- r = ordered_hashmap_reserve(c->have_installed, ordered_hashmap_size(c->will_install));
- if (r < 0)
- return r;
- }
+ 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_install))) {
- assert_se(ordered_hashmap_move_one(c->have_installed, c->will_install, i->name) == 0);
+ while ((i = ordered_hashmap_first(c->will_process))) {
+ int q;
- q = unit_file_search(c, i, paths, root_dir, false, true, NULL);
- if (q < 0) {
- if (r >= 0)
- r = q;
+ q = ordered_hashmap_move_one(c->have_processed, c->will_process, i->name);
+ if (q < 0)
+ return q;
+ r = install_info_traverse(scope, c, root_dir, paths, i, flags, NULL);
+ if (r < 0)
return r;
- } else if (r >= 0)
- r += q;
+
+ if (i->type != UNIT_FILE_TYPE_REGULAR)
+ continue;
q = install_info_apply(i, paths, config_path, root_dir, force, changes, n_changes);
- if (r >= 0 && q < 0)
- r = q;
+ 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,
@@ -1435,7 +1449,7 @@ static int install_context_mark_for_removal(
const char *root_dir) {
UnitFileInstallInfo *i;
- int r, q;
+ int r;
assert(c);
assert(paths);
@@ -1443,87 +1457,182 @@ static int install_context_mark_for_removal(
/* Marks all items for removal */
- if (!ordered_hashmap_isempty(c->will_install)) {
- r = ordered_hashmap_ensure_allocated(&c->have_installed, &string_hash_ops);
+ 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 = ordered_hashmap_reserve(c->have_installed, ordered_hashmap_size(c->will_install));
+ r = install_info_traverse(scope, c, root_dir, paths, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL);
if (r < 0)
return r;
- }
- 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);
-
- 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;
+ if (i->type != UNIT_FILE_TYPE_REGULAR)
+ continue;
+ r = mark_symlink_for_removal(remove_symlinks_to, i->name);
+ if (r < 0)
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 = mark_symlink_for_removal(remove_symlinks_to, unit_file);
- free(unit_file);
- }
- } else
- q = mark_symlink_for_removal(remove_symlinks_to, i->name);
+ return 0;
+}
+
+int unit_file_mask(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char **files,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ _cleanup_free_ char *prefix = NULL;
+ char **i;
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
- if (r >= 0 && q < 0)
+ r = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
+
+ r = get_config_path(scope, runtime, root_dir, &prefix);
+ if (r < 0)
+ return r;
+
+ 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, prefix);
+ if (!path)
+ return -ENOMEM;
+
+ q = create_symlink("/dev/null", path, force, changes, n_changes);
+ if (q < 0 && r >= 0)
r = q;
}
return r;
}
-int unit_file_add_dependency(
+int unit_file_unmask(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ _cleanup_set_free_free_ Set *remove_symlinks_to = NULL;
+ _cleanup_free_ char *config_path = NULL;
+ _cleanup_free_ char **todo = NULL;
+ size_t n_todo = 0, n_allocated = 0;
+ char **i;
+ int r, q;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ r = verify_root_dir(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;
+
+ 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++] = *i;
+ }
+
+ strv_uniq(todo);
+
+ r = 0;
+ STRV_FOREACH(i, todo) {
+ _cleanup_free_ char *path = NULL;
+
+ path = path_make_absolute(*i, config_path);
+ if (!path)
+ return -ENOMEM;
+
+ if (unlink(path) < 0) {
+ if (errno != -ENOENT && r >= 0)
+ r = -errno;
+ } else {
+ q = mark_symlink_for_removal(&remove_symlinks_to, path);
+ if (q < 0)
+ return q;
+
+ unit_file_changes_add(changes, n_changes, UNIT_FILE_UNLINK, path, NULL);
+ }
+ }
+
+ q = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes);
+ if (r >= 0)
+ r = q;
+
+ return r;
+}
+
+int unit_file_link(
UnitFileScope scope,
bool runtime,
const char *root_dir,
char **files,
- char *target,
- UnitDependency dep,
bool force,
UnitFileChange **changes,
unsigned *n_changes) {
_cleanup_lookup_paths_free_ LookupPaths paths = {};
- _cleanup_(install_context_done) InstallContext c = {};
_cleanup_free_ char *config_path = NULL;
+ _cleanup_free_ char **todo = NULL;
+ size_t n_todo = 0, n_allocated = 0;
char **i;
- int r;
- UnitFileInstallInfo *info;
+ int r, q;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
+ r = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
+
r = lookup_paths_init_from_scope(&paths, scope, root_dir);
if (r < 0)
return r;
@@ -1533,55 +1642,135 @@ int unit_file_add_dependency(
return r;
STRV_FOREACH(i, files) {
- UnitFileState state;
+ _cleanup_free_ char *full = NULL;
+ struct stat st;
+ char *fn;
- 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);
+ if (!path_is_absolute(*i))
+ return -EINVAL;
- if (state == UNIT_FILE_MASKED || state == UNIT_FILE_MASKED_RUNTIME) {
- log_error("Failed to enable unit: Unit %s is masked", *i);
- return -EOPNOTSUPP;
- }
+ fn = basename(*i);
+ if (!unit_name_is_valid(fn, UNIT_NAME_ANY))
+ return -EINVAL;
- r = install_info_add_auto(&c, *i);
- if (r < 0)
- return r;
+ full = prefix_root(root_dir, *i);
+ if (!full)
+ return -ENOMEM;
+
+ if (lstat(full, &st) < 0)
+ return -errno;
+ if (S_ISLNK(st.st_mode))
+ return -ELOOP;
+ if (S_ISDIR(st.st_mode))
+ return -EISDIR;
+ if (!S_ISREG(st.st_mode))
+ return -ENOTTY;
+
+ q = in_search_path(*i, paths.unit_path);
+ if (q < 0)
+ return q;
+ if (q > 0)
+ continue;
+
+ if (!GREEDY_REALLOC0(todo, n_allocated, n_todo + 2))
+ return -ENOMEM;
+
+ todo[n_todo++] = *i;
}
- if (!ordered_hashmap_isempty(c.will_install)) {
- r = ordered_hashmap_ensure_allocated(&c.have_installed, &string_hash_ops);
- if (r < 0)
- return r;
+ strv_uniq(todo);
- r = ordered_hashmap_reserve(c.have_installed, ordered_hashmap_size(c.will_install));
- if (r < 0)
- return r;
+ r = 0;
+ STRV_FOREACH(i, todo) {
+ _cleanup_free_ char *path = NULL;
+
+ path = path_make_absolute(basename(*i), config_path);
+ if (!path)
+ return -ENOMEM;
+
+ q = create_symlink(*i, path, force, changes, n_changes);
+ if (q < 0 && r >= 0)
+ r = q;
}
- while ((info = ordered_hashmap_first(c.will_install))) {
- assert_se(ordered_hashmap_move_one(c.have_installed, c.will_install, info->name) == 0);
+ return r;
+}
+
+int unit_file_add_dependency(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char **files,
+ const char *target,
+ UnitDependency dep,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ _cleanup_lookup_paths_free_ LookupPaths paths = {};
+ _cleanup_(install_context_done) InstallContext c = {};
+ _cleanup_free_ char *config_path = NULL;
+ UnitFileInstallInfo *i, *target_info;
+ char **f;
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+ assert(target);
+
+ if (!IN_SET(dep, UNIT_WANTS, UNIT_REQUIRES))
+ return -EINVAL;
- r = unit_file_search(&c, info, &paths, root_dir, false, false, NULL);
+ if (!unit_name_is_valid(target, UNIT_NAME_ANY))
+ return -EINVAL;
+
+ r = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
+
+ 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;
+
+ r = install_info_discover(scope, &c, root_dir, &paths, target, SEARCH_FOLLOW_CONFIG_SYMLINKS, &target_info);
+ if (r < 0)
+ return r;
+ if (target_info->type == UNIT_FILE_TYPE_MASKED)
+ return -ESHUTDOWN;
+
+ assert(target_info->type == UNIT_FILE_TYPE_REGULAR);
+
+ STRV_FOREACH(f, files) {
+ char ***l;
+
+ r = install_info_discover(scope, &c, root_dir, &paths, *f, SEARCH_FOLLOW_CONFIG_SYMLINKS, &i);
if (r < 0)
return r;
+ if (i->type == UNIT_FILE_TYPE_MASKED)
+ return -ESHUTDOWN;
+
+ assert(i->type == UNIT_FILE_TYPE_REGULAR);
+
+ /* 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;
+ l = &i->required_by;
- if (r < 0)
- return r;
-
- 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, NULL);
+ if (!*l)
+ return -ENOMEM;
}
- return 0;
+ return install_context_apply(scope, &c, &paths, config_path, root_dir, force, SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes);
}
int unit_file_enable(
@@ -1595,13 +1784,18 @@ int unit_file_enable(
_cleanup_lookup_paths_free_ LookupPaths paths = {};
_cleanup_(install_context_done) InstallContext c = {};
- char **i;
_cleanup_free_ char *config_path = NULL;
+ UnitFileInstallInfo *i;
+ char **f;
int r;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
+ r = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
+
r = lookup_paths_init_from_scope(&paths, scope, root_dir);
if (r < 0)
return r;
@@ -1610,29 +1804,22 @@ int unit_file_enable(
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;
- }
-
- r = install_info_add_auto(&c, *i);
+ STRV_FOREACH(f, files) {
+ r = install_info_discover(scope, &c, root_dir, &paths, *f, SEARCH_LOAD, &i);
if (r < 0)
return r;
+ if (i->type == UNIT_FILE_TYPE_MASKED)
+ return -ESHUTDOWN;
+
+ 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, root_dir, force, SEARCH_LOAD, changes, n_changes);
}
int unit_file_disable(
@@ -1645,14 +1832,18 @@ int unit_file_disable(
_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;
+ char **i;
+ int r;
assert(scope >= 0);
assert(scope < _UNIT_FILE_SCOPE_MAX);
+ r = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
+
r = lookup_paths_init_from_scope(&paths, scope, root_dir);
if (r < 0)
return r;
@@ -1662,18 +1853,19 @@ int unit_file_disable(
return r;
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, 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, root_dir);
+ if (r < 0)
+ return r;
- return r;
+ return remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes);
}
int unit_file_reenable(
@@ -1684,21 +1876,30 @@ int unit_file_reenable(
bool force,
UnitFileChange **changes,
unsigned *n_changes) {
+
+ char **n;
int r;
+ size_t l, i;
+
+ /* 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, runtime, root_dir, files,
- changes, n_changes);
+ r = unit_file_disable(scope, runtime, 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, runtime, root_dir, files, force, changes, n_changes);
}
int unit_file_set_default(
UnitFileScope scope,
const char *root_dir,
- const char *file,
+ const char *name,
bool force,
UnitFileChange **changes,
unsigned *n_changes) {
@@ -1706,42 +1907,40 @@ int unit_file_set_default(
_cleanup_lookup_paths_free_ LookupPaths paths = {};
_cleanup_(install_context_done) InstallContext c = {};
_cleanup_free_ char *config_path = NULL;
- char *path;
+ UnitFileInstallInfo *i;
+ const char *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)
+ return -EINVAL;
+ if (streq(name, SPECIAL_DEFAULT_TARGET))
return -EINVAL;
- r = lookup_paths_init_from_scope(&paths, scope, root_dir);
+ r = verify_root_dir(scope, &root_dir);
if (r < 0)
return r;
- r = get_config_path(scope, false, root_dir, &config_path);
+ r = lookup_paths_init_from_scope(&paths, scope, root_dir);
if (r < 0)
return r;
- r = install_info_add_auto(&c, file);
+ r = get_config_path(scope, false, root_dir, &config_path);
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 = install_info_discover(scope, &c, root_dir, &paths, name, 0, &i);
if (r < 0)
return r;
+ if (i->type == UNIT_FILE_TYPE_MASKED)
+ return -ESHUTDOWN;
path = strjoina(config_path, "/" SPECIAL_DEFAULT_TARGET);
- r = create_symlink(i->path, path, force, changes, n_changes);
- if (r < 0)
- return r;
-
- return 0;
+ return create_symlink(i->path, path, force, changes, n_changes);
}
int unit_file_get_default(
@@ -1750,126 +1949,101 @@ int unit_file_get_default(
char **name) {
_cleanup_lookup_paths_free_ LookupPaths paths = {};
- char **p;
+ _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 = verify_root_dir(scope, &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));
+ r = lookup_paths_init_from_scope(&paths, scope, root_dir);
+ if (r < 0)
+ return r;
- if (!n)
- return -ENOMEM;
+ r = install_info_discover(scope, &c, root_dir, &paths, SPECIAL_DEFAULT_TARGET, SEARCH_FOLLOW_CONFIG_SYMLINKS, &i);
+ if (r < 0)
+ return r;
+ if (i->type == UNIT_FILE_TYPE_MASKED)
+ return -ESHUTDOWN;
- *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 = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
- free(path);
- path = path_join(root_dir, *i, name);
- if (!path)
- return -ENOMEM;
+ r = install_info_discover(scope, &c, root_dir, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, &i);
+ if (r < 0)
+ return r;
- 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:
+ state = path_startswith(i->path, "/run") ? UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED;
+ break;
- r = find_symlinks_in_scope(scope, root_dir, name, &state);
+ case UNIT_FILE_TYPE_REGULAR:
+ r = find_symlinks_in_scope(scope, root_dir, i->name, &state);
if (r < 0)
return r;
- else if (r > 0)
- return state;
-
- r = unit_file_can_install(paths, root_dir, partial, true, &also);
- if (r < 0 && errno != ENOENT)
- 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) {
+ 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 = {};
int r;
@@ -1878,14 +2052,15 @@ UnitFileState unit_file_get_state(
assert(scope < _UNIT_FILE_SCOPE_MAX);
assert(name);
- if (root_dir && scope != UNIT_FILE_SYSTEM)
- return -EINVAL;
+ r = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
r = lookup_paths_init_from_scope(&paths, scope, root_dir);
if (r < 0)
return r;
- return unit_file_lookup_state(scope, root_dir, &paths, name);
+ return unit_file_lookup_state(scope, root_dir, &paths, name, ret);
}
int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) {
@@ -1897,6 +2072,13 @@ int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char
assert(scope < _UNIT_FILE_SCOPE_MAX);
assert(name);
+ r = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
+
+ if (!unit_name_is_valid(name, UNIT_NAME_ANY))
+ return -EINVAL;
+
if (scope == UNIT_FILE_SYSTEM)
r = conf_files_list(&files, ".preset", root_dir,
"/etc/systemd/system-preset",
@@ -1913,13 +2095,14 @@ int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char
"/usr/lib/systemd/user-preset",
NULL);
else
- return 1;
+ return 1; /* Default is "enable" */
if (r < 0)
return r;
STRV_FOREACH(p, files) {
_cleanup_fclose_ FILE *f;
+ char line[LINE_MAX];
f = fopen(*p, "re");
if (!f) {
@@ -1929,39 +2112,38 @@ int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char
return -errno;
}
- for (;;) {
- char line[LINE_MAX], *l;
-
- if (!fgets(line, sizeof(line), f))
- break;
+ FOREACH_LINE(line, f, return -errno) {
+ const char *parameter;
+ char *l;
l = strstrip(line);
- if (!*l)
- continue;
- 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);
-
- if (fnmatch(l, name, FNM_NOESCAPE) == 0) {
+ parameter = first_word(l, "enable");
+ if (parameter) {
+ if (fnmatch(parameter, name, FNM_NOESCAPE) == 0) {
log_debug("Preset file says enable %s.", name);
return 1;
}
- } else if (first_word(l, "disable")) {
- l += 7;
- l += strspn(l, WHITESPACE);
+ continue;
+ }
- if (fnmatch(l, name, FNM_NOESCAPE) == 0) {
+ parameter = first_word(l, "disable");
+ if (parameter) {
+ if (fnmatch(parameter, name, FNM_NOESCAPE) == 0) {
log_debug("Preset file says disable %s.", name);
return 0;
}
- } else
- log_debug("Couldn't parse line '%s'", l);
+ continue;
+ }
+
+ log_debug("Couldn't parse line '%s'", l);
}
}
@@ -1970,6 +2152,86 @@ int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char
return 1;
}
+static int execute_preset(
+ UnitFileScope scope,
+ InstallContext *plus,
+ InstallContext *minus,
+ const LookupPaths *paths,
+ const char *config_path,
+ const char *root_dir,
+ char **files,
+ UnitFilePresetMode mode,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *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(scope, minus, paths, &remove_symlinks_to, config_path, root_dir);
+ if (r < 0)
+ return r;
+
+ r = remove_marked_symlinks(remove_symlinks_to, config_path, 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(scope, plus, paths, config_path, root_dir, 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 *root_dir,
+ UnitFilePresetMode mode,
+ const char *name) {
+
+ UnitFileInstallInfo *i;
+ int r;
+
+ if (install_info_find(plus, name) ||
+ install_info_find(minus, name))
+ return 0;
+
+ r = unit_file_query_preset(scope, root_dir, name);
+ if (r < 0)
+ return r;
+
+ if (r > 0) {
+ r = install_info_discover(scope, plus, root_dir, paths, name, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, &i);
+ if (r < 0)
+ return r;
+
+ if (i->type == UNIT_FILE_TYPE_MASKED)
+ return -ESHUTDOWN;
+ } else
+ r = install_info_discover(scope, minus, root_dir, paths, name, SEARCH_FOLLOW_CONFIG_SYMLINKS, &i);
+
+ return r;
+}
+
int unit_file_preset(
UnitFileScope scope,
bool runtime,
@@ -1984,12 +2246,16 @@ int unit_file_preset(
_cleanup_lookup_paths_free_ LookupPaths paths = {};
_cleanup_free_ 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 = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
+
r = lookup_paths_init_from_scope(&paths, scope, root_dir);
if (r < 0)
return r;
@@ -1999,44 +2265,15 @@ int unit_file_preset(
return r;
STRV_FOREACH(i, files) {
-
if (!unit_name_is_valid(*i, UNIT_NAME_ANY))
return -EINVAL;
- r = unit_file_query_preset(scope, root_dir, *i);
+ r = preset_prepare_one(scope, &plus, &minus, &paths, root_dir, mode, *i);
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);
- else
- r = 0;
- 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, files);
- if (r == 0)
- r = q;
}
- if (mode != UNIT_FILE_PRESET_DISABLE_ONLY) {
- /* 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;
- }
-
- return r;
+ return execute_preset(scope, &plus, &minus, &paths, config_path, root_dir, files, mode, force, changes, n_changes);
}
int unit_file_preset_all(
@@ -2052,12 +2289,16 @@ int unit_file_preset_all(
_cleanup_lookup_paths_free_ LookupPaths paths = {};
_cleanup_free_ 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 = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
+
r = lookup_paths_init_from_scope(&paths, scope, root_dir);
if (r < 0)
return r;
@@ -2069,6 +2310,7 @@ int unit_file_preset_all(
STRV_FOREACH(i, paths.unit_path) {
_cleanup_closedir_ DIR *d = NULL;
_cleanup_free_ char *units_dir;
+ struct dirent *de;
units_dir = path_join(root_dir, *i, NULL);
if (!units_dir)
@@ -2082,62 +2324,23 @@ int unit_file_preset_all(
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;
+ r = preset_prepare_one(scope, &plus, &minus, &paths, root_dir, mode, de->d_name);
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, root_dir, NULL, mode, force, changes, n_changes);
}
static void unit_file_list_free_one(UnitFileList *f) {
@@ -2148,6 +2351,15 @@ static void unit_file_list_free_one(UnitFileList *f) {
free(f);
}
+Hashmap* unit_file_list_free(Hashmap *h) {
+ UnitFileList *i;
+
+ while ((i = hashmap_steal_first(h)))
+ unit_file_list_free_one(i);
+
+ return hashmap_free(h);
+}
+
DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one);
int unit_file_get_list(
@@ -2163,14 +2375,9 @@ int unit_file_get_list(
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 = verify_root_dir(scope, &root_dir);
+ if (r < 0)
+ return r;
r = lookup_paths_init_from_scope(&paths, scope, root_dir);
if (r < 0)
@@ -2179,6 +2386,7 @@ int unit_file_get_list(
STRV_FOREACH(i, paths.unit_path) {
_cleanup_closedir_ DIR *d = NULL;
_cleanup_free_ char *units_dir;
+ struct dirent *de;
units_dir = path_join(root_dir, *i, NULL);
if (!units_dir)
@@ -2192,22 +2400,8 @@ int unit_file_get_list(
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))
- continue;
if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY))
continue;
@@ -2228,44 +2422,14 @@ int unit_file_get_list(
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, root_dir, &paths, basename(f->path), &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;
-
- found:
r = hashmap_put(h, basename(f->path), f);
if (r < 0)
return r;
+
f = NULL; /* prevent cleanup */
}
}
@@ -2283,7 +2447,7 @@ static const char* const unit_file_state_table[_UNIT_FILE_STATE_MAX] = {
[UNIT_FILE_STATIC] = "static",
[UNIT_FILE_DISABLED] = "disabled",
[UNIT_FILE_INDIRECT] = "indirect",
- [UNIT_FILE_INVALID] = "invalid",
+ [UNIT_FILE_BAD] = "bad",
};
DEFINE_STRING_TABLE_LOOKUP(unit_file_state, UnitFileState);
diff --git a/src/shared/install.h b/src/shared/install.h
index a9d77dd91b..45a417df92 100644
--- a/src/shared/install.h
+++ b/src/shared/install.h
@@ -25,13 +25,15 @@ typedef enum UnitFileScope UnitFileScope;
typedef enum UnitFileState UnitFileState;
typedef enum UnitFilePresetMode UnitFilePresetMode;
typedef enum UnitFileChangeType UnitFileChangeType;
+typedef enum UnitFileType UnitFileType;
typedef struct UnitFileChange UnitFileChange;
typedef struct UnitFileList UnitFileList;
typedef struct UnitFileInstallInfo UnitFileInstallInfo;
#include "hashmap.h"
-#include "unit-name.h"
#include "path-lookup.h"
+#include "strv.h"
+#include "unit-name.h"
enum UnitFileScope {
UNIT_FILE_SYSTEM,
@@ -51,7 +53,7 @@ enum UnitFileState {
UNIT_FILE_STATIC,
UNIT_FILE_DISABLED,
UNIT_FILE_INDIRECT,
- UNIT_FILE_INVALID,
+ UNIT_FILE_BAD,
_UNIT_FILE_STATE_MAX,
_UNIT_FILE_STATE_INVALID = -1
};
@@ -82,10 +84,17 @@ struct UnitFileList {
UnitFileState state;
};
+enum UnitFileType {
+ UNIT_FILE_TYPE_REGULAR,
+ UNIT_FILE_TYPE_SYMLINK,
+ UNIT_FILE_TYPE_MASKED,
+ _UNIT_FILE_TYPE_MAX,
+ _UNIT_FILE_TYPE_INVALID = -1,
+};
+
struct UnitFileInstallInfo {
char *name;
char *path;
- char *user;
char **aliases;
char **wanted_by;
@@ -93,8 +102,26 @@ struct UnitFileInstallInfo {
char **also;
char *default_instance;
+
+ UnitFileType type;
+
+ char *symlink_target;
};
+static inline bool UNIT_FILE_INSTALL_INFO_HAS_RULES(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(UnitFileInstallInfo *i) {
+ assert(i);
+
+ return !strv_isempty(i->also);
+}
+
int unit_file_enable(UnitFileScope scope, bool runtime, const char *root_dir, char **files, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_disable(UnitFileScope scope, bool runtime, const char *root_dir, char **files, UnitFileChange **changes, unsigned *n_changes);
int unit_file_reenable(UnitFileScope scope, bool runtime, const char *root_dir, char **files, bool force, UnitFileChange **changes, unsigned *n_changes);
@@ -105,21 +132,14 @@ int unit_file_mask(UnitFileScope scope, bool runtime, const char *root_dir, char
int unit_file_unmask(UnitFileScope scope, bool runtime, const char *root_dir, char **files, UnitFileChange **changes, unsigned *n_changes);
int unit_file_set_default(UnitFileScope scope, const char *root_dir, const char *file, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_get_default(UnitFileScope scope, const char *root_dir, char **name);
-int unit_file_add_dependency(UnitFileScope scope, bool runtime, const char *root_dir, char **files, char *target, UnitDependency dep, bool force, UnitFileChange **changes, unsigned *n_changes);
-
-UnitFileState unit_file_lookup_state(
- UnitFileScope scope,
- const char *root_dir,
- const LookupPaths *paths,
- const char *name);
-UnitFileState unit_file_get_state(
- UnitFileScope scope,
- const char *root_dir,
- const char *filename);
+int unit_file_add_dependency(UnitFileScope scope, bool runtime, const char *root_dir, char **files, const char *target, UnitDependency dep, bool force, UnitFileChange **changes, unsigned *n_changes);
+
+int unit_file_lookup_state(UnitFileScope scope, const char *root_dir,const LookupPaths *paths, const char *name, UnitFileState *ret);
+int unit_file_get_state(UnitFileScope scope, const char *root_dir, const char *filename, UnitFileState *ret);
int unit_file_get_list(UnitFileScope scope, const char *root_dir, Hashmap *h);
+Hashmap* unit_file_list_free(Hashmap *h);
-void unit_file_list_free(Hashmap *h);
int unit_file_changes_add(UnitFileChange **changes, unsigned *n_changes, UnitFileChangeType type, const char *path, const char *source);
void unit_file_changes_free(UnitFileChange *changes, unsigned n_changes);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-22 03:21:48 +0000