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Diffstat (limited to 'src/shared/install.c')
-rw-r--r--src/shared/install.c83
1 files changed, 56 insertions, 27 deletions
diff --git a/src/shared/install.c b/src/shared/install.c
index cc36da1853..64d66a45d3 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -40,6 +40,7 @@
#include "hashmap.h"
#include "install-printf.h"
#include "install.h"
+#include "locale-util.h"
#include "log.h"
#include "macro.h"
#include "mkdir.h"
@@ -116,6 +117,14 @@ bool unit_type_may_template(UnitType type) {
UNIT_PATH);
}
+static const char *unit_file_type_table[_UNIT_FILE_TYPE_MAX] = {
+ [UNIT_FILE_TYPE_REGULAR] = "regular",
+ [UNIT_FILE_TYPE_SYMLINK] = "symlink",
+ [UNIT_FILE_TYPE_MASKED] = "masked",
+};
+
+DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(unit_file_type, UnitFileType);
+
static int in_search_path(const LookupPaths *p, const char *path) {
_cleanup_free_ char *parent = NULL;
char **i;
@@ -328,7 +337,10 @@ void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *chang
switch(changes[i].type) {
case UNIT_FILE_SYMLINK:
if (!quiet)
- log_info("Created symlink %s, pointing to %s.", changes[i].path, changes[i].source);
+ log_info("Created symlink %s %s %s.",
+ changes[i].path,
+ special_glyph(ARROW),
+ changes[i].source);
break;
case UNIT_FILE_UNLINK:
if (!quiet)
@@ -338,6 +350,11 @@ void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *chang
if (!quiet)
log_info("Unit %s is masked, ignoring.", changes[i].path);
break;
+ case UNIT_FILE_IS_DANGLING:
+ if (!quiet)
+ log_info("Unit %s is an alias to a unit that is not present, ignoring.",
+ changes[i].path);
+ break;
case -EEXIST:
if (changes[i].source)
log_error_errno(changes[i].type,
@@ -376,8 +393,6 @@ void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *chang
log_error_errno(r, "Failed to %s: %m.", verb);
}
-
-
static int create_symlink(
const char *old_path,
const char *new_path,
@@ -393,7 +408,11 @@ static int create_symlink(
/* Actually create a symlink, and remember that we did. Is
* smart enough to check if there's already a valid symlink in
- * place. */
+ * place.
+ *
+ * Returns 1 if a symlink was created or already exists and points to
+ * the right place, or negative on error.
+ */
mkdir_parents_label(new_path, 0755);
@@ -418,7 +437,7 @@ static int create_symlink(
}
if (path_equal(dest, old_path))
- return 0;
+ return 1;
if (!force) {
unit_file_changes_add(changes, n_changes, -EEXIST, new_path, dest);
@@ -1223,6 +1242,7 @@ static int unit_file_search(
const LookupPaths *paths,
SearchFlags flags) {
+ _cleanup_free_ char *template = NULL;
char **p;
int r;
@@ -1247,24 +1267,19 @@ static int unit_file_search(
return -ENOMEM;
r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags);
- if (r < 0) {
- if (r != -ENOENT)
- return r;
- } else {
+ if (r >= 0) {
info->path = path;
path = NULL;
return r;
- }
+ } else if (r != -ENOENT)
+ return r;
}
if (unit_name_is_valid(info->name, UNIT_NAME_INSTANCE)) {
-
/* Unit file doesn't exist, however instance
* enablement was requested. We will check if it is
* possible to load template unit file. */
- _cleanup_free_ char *template = NULL;
-
r = unit_name_template(info->name, &template);
if (r < 0)
return r;
@@ -1277,17 +1292,16 @@ static int unit_file_search(
return -ENOMEM;
r = unit_file_load_or_readlink(c, info, path, paths->root_dir, flags);
- if (r < 0) {
- if (r != -ENOENT)
- return r;
- } else {
+ if (r >= 0) {
info->path = path;
path = NULL;
return r;
- }
+ } else if (r != -ENOENT)
+ return r;
}
}
+ log_debug("Cannot find unit %s%s%s.", info->name, template ? " or " : "", strempty(template));
return -ENOENT;
}
@@ -1319,6 +1333,11 @@ static int install_info_follow(
return unit_file_load_or_readlink(c, i, i->path, root_dir, flags);
}
+/**
+ * Search for the unit file. If the unit name is a symlink,
+ * follow the symlink to the target, maybe more than once.
+ * Propagate the instance name if present.
+ */
static int install_info_traverse(
UnitFileScope scope,
InstallContext *c,
@@ -1355,13 +1374,10 @@ static int install_info_traverse(
}
r = install_info_follow(c, i, paths->root_dir, flags);
- if (r < 0) {
+ if (r == -EXDEV) {
_cleanup_free_ char *buffer = NULL;
const char *bn;
- if (r != -EXDEV)
- return r;
-
/* Target has a different name, create a new
* install info object for that, and continue
* with that. */
@@ -1388,12 +1404,15 @@ static int install_info_traverse(
if (r < 0)
return r;
+ /* Try again, with the new target we found. */
r = unit_file_search(c, i, paths, flags);
- if (r < 0)
- return r;
+ if (r == -ENOENT)
+ /* Translate error code to highlight this specific case */
+ return -ENOLINK;
}
- /* Try again, with the new target we found. */
+ if (r < 0)
+ return r;
}
if (ret)
@@ -1689,11 +1708,17 @@ static int install_context_mark_for_removal(
return r;
r = install_info_traverse(scope, c, paths, i, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS, NULL);
- if (r < 0)
+ if (r == -ENOLINK)
+ return 0;
+ else if (r < 0)
return r;
- if (i->type != UNIT_FILE_TYPE_REGULAR)
+ if (i->type != UNIT_FILE_TYPE_REGULAR) {
+ log_debug("Unit %s has type %s, ignoring.",
+ i->name,
+ unit_file_type_to_string(i->type) ?: "invalid");
continue;
+ }
r = mark_symlink_for_removal(remove_symlinks_to, i->name);
if (r < 0)
@@ -2788,6 +2813,9 @@ int unit_file_preset_all(
if (r == -ERFKILL)
r = unit_file_changes_add(changes, n_changes,
UNIT_FILE_IS_MASKED, de->d_name, NULL);
+ else if (r == -ENOLINK)
+ r = unit_file_changes_add(changes, n_changes,
+ UNIT_FILE_IS_DANGLING, de->d_name, NULL);
if (r < 0)
return r;
}
@@ -2911,6 +2939,7 @@ static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX]
[UNIT_FILE_SYMLINK] = "symlink",
[UNIT_FILE_UNLINK] = "unlink",
[UNIT_FILE_IS_MASKED] = "masked",
+ [UNIT_FILE_IS_DANGLING] = "dangling",
};
DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, UnitFileChangeType);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-26 21:34:56 +0000