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systemd/SOURCES/0185-shared-install-split-u...

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From caaea62c2c32e6aedb24288d5f51e6c35187e14c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Mon, 14 Mar 2022 12:09:31 +0100
Subject: [PATCH] shared/install: split unit_file_{disable,enable}() so
_reenable doesn't do setup twice
It was pretty ugly that we were creating LookupPaths twice.
(cherry picked from commit ec7eaff3c2abf3048f3fba98bfbe08a0c7c898b0)
Related: #2082131
---
src/shared/install.c | 105 +++++++++++++++++++++++++++++--------------
1 file changed, 72 insertions(+), 33 deletions(-)
diff --git a/src/shared/install.c b/src/shared/install.c
index fadd2be248..1018e4fbf3 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -2596,33 +2596,21 @@ int unit_file_add_dependency(
SEARCH_FOLLOW_CONFIG_SYMLINKS, changes, n_changes);
}
-int unit_file_enable(
+static int do_unit_file_enable(
+ const LookupPaths *lp,
UnitFileScope scope,
- UnitFileFlags file_flags,
- const char *root_dir,
+ UnitFileFlags flags,
+ const char *config_path,
char **files,
UnitFileChange **changes,
size_t *n_changes) {
- _cleanup_(lookup_paths_free) LookupPaths lp = {};
_cleanup_(install_context_done) InstallContext ctx = { .scope = scope };
- const char *config_path;
UnitFileInstallInfo *info;
int r;
- assert(scope >= 0);
- assert(scope < _UNIT_FILE_SCOPE_MAX);
-
- r = lookup_paths_init_or_warn(&lp, scope, 0, root_dir);
- if (r < 0)
- return r;
-
- config_path = config_path_from_flags(&lp, file_flags);
- if (!config_path)
- return -ENXIO;
-
STRV_FOREACH(f, files) {
- r = install_info_discover_and_check(&ctx, &lp, *f, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS,
+ r = install_info_discover_and_check(&ctx, lp, *f, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS,
&info, changes, n_changes);
if (r < 0)
return r;
@@ -2635,11 +2623,11 @@ int unit_file_enable(
is useful to determine whether the passed files had any
installation data at all. */
- return install_context_apply(&ctx, &lp, file_flags, config_path,
+ return install_context_apply(&ctx, lp, flags, config_path,
SEARCH_LOAD, changes, n_changes);
}
-int unit_file_disable(
+int unit_file_enable(
UnitFileScope scope,
UnitFileFlags flags,
const char *root_dir,
@@ -2648,9 +2636,6 @@ int unit_file_disable(
size_t *n_changes) {
_cleanup_(lookup_paths_free) LookupPaths lp = {};
- _cleanup_(install_context_done) InstallContext ctx = { .scope = scope };
- _cleanup_set_free_free_ Set *remove_symlinks_to = NULL;
- const char *config_path;
int r;
assert(scope >= 0);
@@ -2660,27 +2645,44 @@ int unit_file_disable(
if (r < 0)
return r;
- config_path = config_path_from_flags(&lp, flags);
+ const char *config_path = config_path_from_flags(&lp, flags);
if (!config_path)
return -ENXIO;
+ return do_unit_file_enable(&lp, scope, flags, config_path, files, changes, n_changes);
+}
+
+static int do_unit_file_disable(
+ const LookupPaths *lp,
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *config_path,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ _cleanup_(install_context_done) InstallContext ctx = { .scope = scope };
+ _cleanup_set_free_free_ Set *remove_symlinks_to = NULL;
+ int r;
+
STRV_FOREACH(i, files) {
if (!unit_name_is_valid(*i, UNIT_NAME_ANY))
return -EINVAL;
- r = install_info_add(&ctx, *i, NULL, lp.root_dir, /* auxiliary= */ false, NULL);
+ r = install_info_add(&ctx, *i, NULL, lp->root_dir, /* auxiliary= */ false, NULL);
if (r < 0)
return r;
}
- r = install_context_mark_for_removal(&ctx, &lp, &remove_symlinks_to, config_path, changes, n_changes);
+ r = install_context_mark_for_removal(&ctx, lp, &remove_symlinks_to, config_path, changes, n_changes);
if (r < 0)
return r;
- return remove_marked_symlinks(remove_symlinks_to, config_path, &lp, flags & UNIT_FILE_DRY_RUN, changes, n_changes);
+ return remove_marked_symlinks(remove_symlinks_to, config_path, lp, flags & UNIT_FILE_DRY_RUN, changes, n_changes);
}
-int unit_file_reenable(
+
+int unit_file_disable(
UnitFileScope scope,
UnitFileFlags flags,
const char *root_dir,
@@ -2688,23 +2690,60 @@ int unit_file_reenable(
UnitFileChange **changes,
size_t *n_changes) {
- char **n;
+ _cleanup_(lookup_paths_free) LookupPaths lp = {};
int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ r = lookup_paths_init(&lp, scope, 0, root_dir);
+ if (r < 0)
+ return r;
+
+ const char *config_path = config_path_from_flags(&lp, flags);
+ if (!config_path)
+ return -ENXIO;
+
+ return do_unit_file_disable(&lp, scope, flags, config_path, files, changes, n_changes);
+}
+
+int unit_file_reenable(
+ UnitFileScope scope,
+ UnitFileFlags flags,
+ const char *root_dir,
+ char **files,
+ UnitFileChange **changes,
+ size_t *n_changes) {
+
+ _cleanup_(lookup_paths_free) LookupPaths lp = {};
size_t l, i;
+ char **names;
+ int r;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ r = lookup_paths_init(&lp, scope, 0, root_dir);
+ if (r < 0)
+ return r;
+
+ const char *config_path = config_path_from_flags(&lp, flags);
+ if (!config_path)
+ return -ENXIO;
/* First, we invoke the disable command with only the basename... */
l = strv_length(files);
- n = newa(char*, l+1);
+ names = newa(char*, l+1);
for (i = 0; i < l; i++)
- n[i] = basename(files[i]);
- n[i] = NULL;
+ names[i] = basename(files[i]);
+ names[i] = NULL;
- r = unit_file_disable(scope, flags, root_dir, n, changes, n_changes);
+ r = do_unit_file_disable(&lp, scope, flags, config_path, names, changes, n_changes);
if (r < 0)
return r;
/* But the enable command with the full name */
- return unit_file_enable(scope, flags, root_dir, files, changes, n_changes);
+ return do_unit_file_enable(&lp, scope, flags, config_path, files, changes, n_changes);
}
int unit_file_set_default(