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From f8fd91c9f0f1f7feabf8567bdad61f57fe922011 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
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Date: Sat, 14 Mar 2015 21:46:59 -0400
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Subject: [PATCH] sysv-generator: initialize LookupPaths just once
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With debugging on, sysv-generator would print the full set of
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lookup paths for *every* sysv script.
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While at it, pass LookupPaths as a pointer in sysv-generator,
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and constify it everywhere.
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(cherry picked from commit a8ffe6fbcbfdba39aef8dce8b298b3e0cb377c0e)
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---
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 src/shared/install.c                | 55 ++++++++++++++++++++++---------------
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 src/shared/install.h                | 11 +++++++-
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 src/shared/path-lookup.c            |  1 +
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 src/shared/path-lookup.h            |  3 +-
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 src/sysv-generator/sysv-generator.c | 14 +++++-----
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 5 files changed, 53 insertions(+), 31 deletions(-)
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diff --git a/src/shared/install.c b/src/shared/install.c
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index 65f1c24..92b8d6e 100644
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--- a/src/shared/install.c
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+++ b/src/shared/install.c
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@@ -1084,7 +1084,7 @@ static int unit_file_load(
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 static int unit_file_search(
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                 InstallContext *c,
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                 InstallInfo *info,
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-                LookupPaths *paths,
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+                const LookupPaths *paths,
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                 const char *root_dir,
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                 bool allow_symlink,
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                 bool load,
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@@ -1153,7 +1153,7 @@ static int unit_file_search(
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 }
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 static int unit_file_can_install(
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-                LookupPaths *paths,
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+                const LookupPaths *paths,
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                 const char *root_dir,
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                 const char *name,
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                 bool allow_symlink,
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@@ -1317,7 +1317,7 @@ static int install_info_symlink_wants(
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 static int install_info_symlink_link(
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                 InstallInfo *i,
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-                LookupPaths *paths,
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+                const LookupPaths *paths,
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                 const char *config_path,
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                 const char *root_dir,
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                 bool force,
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@@ -1345,7 +1345,7 @@ static int install_info_symlink_link(
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 static int install_info_apply(
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                 InstallInfo *i,
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-                LookupPaths *paths,
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+                const LookupPaths *paths,
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                 const char *config_path,
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                 const char *root_dir,
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                 bool force,
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@@ -1377,7 +1377,7 @@ static int install_info_apply(
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 static int install_context_apply(
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                 InstallContext *c,
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-                LookupPaths *paths,
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+                const LookupPaths *paths,
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                 const char *config_path,
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                 const char *root_dir,
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                 bool force,
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@@ -1424,7 +1424,7 @@ static int install_context_apply(
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 static int install_context_mark_for_removal(
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                 InstallContext *c,
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-                LookupPaths *paths,
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+                const LookupPaths *paths,
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                 Set **remove_symlinks_to,
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                 const char *config_path,
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                 const char *root_dir) {
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@@ -1785,39 +1785,28 @@ int unit_file_get_default(
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         return -ENOENT;
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 }
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-UnitFileState unit_file_get_state(
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+UnitFileState unit_file_lookup_state(
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                 UnitFileScope scope,
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                 const char *root_dir,
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+                const LookupPaths *paths,
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                 const char *name) {
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-        _cleanup_lookup_paths_free_ LookupPaths paths = {};
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         UnitFileState state = _UNIT_FILE_STATE_INVALID;
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         char **i;
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         _cleanup_free_ char *path = NULL;
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         int r;
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-        assert(scope >= 0);
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-        assert(scope < _UNIT_FILE_SCOPE_MAX);
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-        assert(name);
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-
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-        if (root_dir && scope != UNIT_FILE_SYSTEM)
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-                return -EINVAL;
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+        assert(paths);
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         if (!unit_name_is_valid(name, TEMPLATE_VALID))
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                 return -EINVAL;
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-        r = lookup_paths_init_from_scope(&paths, scope, root_dir);
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-        if (r < 0)
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-                return r;
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-
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-        STRV_FOREACH(i, paths.unit_path) {
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+        STRV_FOREACH(i, paths->unit_path) {
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                 struct stat st;
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                 char *partial;
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                 bool also = false;
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                 free(path);
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-                path = NULL;
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-
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                 path = path_join(root_dir, *i, name);
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                 if (!path)
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                         return -ENOMEM;
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@@ -1858,7 +1847,7 @@ UnitFileState unit_file_get_state(
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                 else if (r > 0)
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                         return state;
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-                r = unit_file_can_install(&paths, root_dir, partial, true, &also);
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+                r = unit_file_can_install(paths, root_dir, partial, true, &also);
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                 if (r < 0 && errno != ENOENT)
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                         return r;
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                 else if (r > 0)
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@@ -1873,6 +1862,28 @@ UnitFileState unit_file_get_state(
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         return r < 0 ? r : state;
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 }
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+UnitFileState unit_file_get_state(
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+                UnitFileScope scope,
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+                const char *root_dir,
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+                const char *name) {
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+
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+        _cleanup_lookup_paths_free_ LookupPaths paths = {};
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+        int r;
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+
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+        assert(scope >= 0);
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+        assert(scope < _UNIT_FILE_SCOPE_MAX);
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+        assert(name);
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+
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+        if (root_dir && scope != UNIT_FILE_SYSTEM)
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+                return -EINVAL;
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+
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+        r = lookup_paths_init_from_scope(&paths, scope, root_dir);
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+        if (r < 0)
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+                return r;
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+
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+        return unit_file_lookup_state(scope, root_dir, &paths, name);
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+}
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+
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 int unit_file_query_preset(UnitFileScope scope, const char *root_dir, const char *name) {
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         _cleanup_strv_free_ char **files = NULL;
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         char **p;
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diff --git a/src/shared/install.h b/src/shared/install.h
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index 357be0f..3ca3939 100644
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--- a/src/shared/install.h
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+++ b/src/shared/install.h
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@@ -23,6 +23,7 @@
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 #include "hashmap.h"
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 #include "unit-name.h"
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+#include "path-lookup.h"
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 typedef enum UnitFileScope {
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         UNIT_FILE_SYSTEM,
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@@ -98,7 +99,15 @@ int unit_file_set_default(UnitFileScope scope, const char *root_dir, const char
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 int unit_file_get_default(UnitFileScope scope, const char *root_dir, char **name);
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 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);
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-UnitFileState unit_file_get_state(UnitFileScope scope, const char *root_dir, const char *filename);
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+UnitFileState unit_file_lookup_state(
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+                UnitFileScope scope,
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+                const char *root_dir,
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+                const LookupPaths *paths,
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+                const char *name);
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+UnitFileState unit_file_get_state(
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+                UnitFileScope scope,
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+                const char *root_dir,
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+                const char *filename);
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 int unit_file_get_list(UnitFileScope scope, const char *root_dir, Hashmap *h);
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diff --git a/src/shared/path-lookup.c b/src/shared/path-lookup.c
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index 291a2f4..812730b 100644
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--- a/src/shared/path-lookup.c
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+++ b/src/shared/path-lookup.c
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@@ -31,6 +31,7 @@
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 #include "strv.h"
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 #include "path-util.h"
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 #include "path-lookup.h"
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+#include "install.h"
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 int user_config_home(char **config_home) {
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         const char *e;
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diff --git a/src/shared/path-lookup.h b/src/shared/path-lookup.h
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index 2ec888d..f1925ee 100644
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--- a/src/shared/path-lookup.h
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+++ b/src/shared/path-lookup.h
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@@ -22,7 +22,8 @@
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 ***/
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 #include "macro.h"
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-#include "install.h"
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+
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+typedef enum UnitFileScope UnitFileScope;
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 typedef struct LookupPaths {
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         char **unit_path;
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diff --git a/src/sysv-generator/sysv-generator.c b/src/sysv-generator/sysv-generator.c
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index 6e39b44..0125ca2 100644
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--- a/src/sysv-generator/sysv-generator.c
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+++ b/src/sysv-generator/sysv-generator.c
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@@ -723,10 +723,10 @@ static int fix_order(SysvStub *s, Hashmap *all_services) {
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         return 0;
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 }
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-static int enumerate_sysv(LookupPaths lp, Hashmap *all_services) {
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+static int enumerate_sysv(const LookupPaths *lp, Hashmap *all_services) {
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         char **path;
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-        STRV_FOREACH(path, lp.sysvinit_path) {
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+        STRV_FOREACH(path, lp->sysvinit_path) {
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                 _cleanup_closedir_ DIR *d = NULL;
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                 struct dirent *de;
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@@ -768,7 +768,7 @@ static int enumerate_sysv(LookupPaths lp, Hashmap *all_services) {
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                         if (!fpath)
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                                 return log_oom();
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-                        if (unit_file_get_state(UNIT_FILE_SYSTEM, NULL, name) >= 0) {
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+                        if (unit_file_lookup_state(UNIT_FILE_SYSTEM, NULL, lp, name) >= 0) {
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                                 log_debug("Native unit for %s already exists, skipping", name);
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                                 continue;
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                         }
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@@ -793,7 +793,7 @@ static int enumerate_sysv(LookupPaths lp, Hashmap *all_services) {
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         return 0;
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 }
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-static int set_dependencies_from_rcnd(LookupPaths lp, Hashmap *all_services) {
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+static int set_dependencies_from_rcnd(const LookupPaths *lp, Hashmap *all_services) {
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         char **p;
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         unsigned i;
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         _cleanup_closedir_ DIR *d = NULL;
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@@ -804,7 +804,7 @@ static int set_dependencies_from_rcnd(LookupPaths lp, Hashmap *all_services) {
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         _cleanup_set_free_ Set *shutdown_services = NULL;
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         int r = 0;
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-        STRV_FOREACH(p, lp.sysvrcnd_path)
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+        STRV_FOREACH(p, lp->sysvrcnd_path)
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                 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
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                         struct dirent *de;
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@@ -954,13 +954,13 @@ int main(int argc, char *argv[]) {
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                 return EXIT_FAILURE;
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         }
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-        r = enumerate_sysv(lp, all_services);
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+        r = enumerate_sysv(&lp, all_services);
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         if (r < 0) {
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                 log_error("Failed to generate units for all init scripts.");
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                 return EXIT_FAILURE;
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         }
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-        r = set_dependencies_from_rcnd(lp, all_services);
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+        r = set_dependencies_from_rcnd(&lp, all_services);
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         if (r < 0) {
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                 log_error("Failed to read runlevels from rcnd links.");
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                 return EXIT_FAILURE;