[systemd-devel] [PATCH] systemd-delta: add support for drop-in snippets
Lukas Nykryn
lnykryn at redhat.com
Tue May 14 08:34:28 PDT 2013
---
TODO | 3 -
man/systemd-delta.xml | 7 ++
src/delta/delta.c | 182 ++++++++++++++++++++++++++++++++++++++++++++------
3 files changed, 170 insertions(+), 22 deletions(-)
diff --git a/TODO b/TODO
index 62016e1..3af9c33 100644
--- a/TODO
+++ b/TODO
@@ -89,9 +89,6 @@ Features:
kmod static-nodes
call kmod as an early service, and drop CAP_MKNOD from udevd.service
-* systemd-delta needs to be made aware of *.d/*.conf drop-in files for
- units.
-
* seems that when we follow symlinks to units we prefer the symlink
destination path over /etc and /usr. We shouldn't do that. Instead
/etc should always override /run+/usr and also any symlink
diff --git a/man/systemd-delta.xml b/man/systemd-delta.xml
index 9293c9b..0c7a54a 100644
--- a/man/systemd-delta.xml
+++ b/man/systemd-delta.xml
@@ -141,6 +141,13 @@
</varlistentry>
<varlistentry>
+ <term><varname>extended</varname></term>
+
+ <listitem><para>Show *.conf files in drop-in
+ directories for units.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
<term><varname>unchanged</varname></term>
<listitem><para>Show unmodified
diff --git a/src/delta/delta.c b/src/delta/delta.c
index aec3dc8..c3cf1a9 100644
--- a/src/delta/delta.c
+++ b/src/delta/delta.c
@@ -31,6 +31,7 @@
#include "log.h"
#include "pager.h"
#include "build.h"
+#include "strv.h"
static bool arg_no_pager = false;
static int arg_diff = -1;
@@ -41,9 +42,10 @@ static enum {
SHOW_REDIRECTED = 1 << 2,
SHOW_OVERRIDDEN = 1 << 3,
SHOW_UNCHANGED = 1 << 4,
+ SHOW_EXTENDED = 1 << 5,
SHOW_DEFAULTS =
- (SHOW_MASKED | SHOW_EQUIVALENT | SHOW_REDIRECTED | SHOW_OVERRIDDEN)
+ (SHOW_MASKED | SHOW_EQUIVALENT | SHOW_REDIRECTED | SHOW_OVERRIDDEN | SHOW_EXTENDED)
} arg_flags = 0;
static int equivalent(const char *a, const char *b) {
@@ -92,6 +94,14 @@ static int notify_override_overridden(const char *top, const char *bottom) {
return 1;
}
+static int notify_override_extended(const char *top, const char *bottom) {
+ if (!(arg_flags & SHOW_EXTENDED))
+ return 0;
+
+ printf(ANSI_HIGHLIGHT_ON "[EXTENDED]" ANSI_HIGHLIGHT_OFF " %s → %s\n", top, bottom);
+ return 1;
+}
+
static int notify_override_unchanged(const char *f) {
if (!(arg_flags & SHOW_UNCHANGED))
return 0;
@@ -148,11 +158,114 @@ static int found_override(const char *top, const char *bottom) {
return 0;
}
-static int enumerate_dir(Hashmap *top, Hashmap *bottom, const char *path) {
+static int enumerate_dir_d(Hashmap *top, Hashmap *bottom, Hashmap *drops, const char *toppath, const char *drop) {
+ _cleanup_free_ char *conf = NULL;
+ _cleanup_free_ char *path = NULL;
+ _cleanup_strv_free_ char **list = NULL;
+ char **file;
+ char *c;
+ int r;
+
+ path = strjoin(toppath, "/", drop, NULL);
+ if (!path)
+ return -ENOMEM;
+
+ path_kill_slashes(path);
+
+ conf = strdup(drop);
+ if (!conf)
+ return -ENOMEM;
+
+ c = strrchr(conf, '.');
+ if(!c)
+ return -EINVAL;
+ *c = 0;
+
+ r = get_files_in_directory(path, &list);
+ if (r < 0){
+ log_error("Failed to enumerate %s: %s", path, strerror(-r));
+ return r;
+ }
+
+ STRV_FOREACH(file, list) {
+ Hashmap *h;
+ int k;
+ char *p;
+ char *d;
+
+ if (!endswith(*file, ".conf"))
+ continue;
+
+ p = strjoin(path, "/", *file, NULL);
+ if (!p)
+ return -ENOMEM;
+
+ path_kill_slashes(p);
+
+ d = strrchr(p, '/');
+ if (!d || d == p) {
+ free(p);
+ return -EINVAL;
+ }
+ d --;
+ d = strrchr(p, '/');
+
+ if (!d || d == p) {
+ free(p);
+ return -EINVAL;
+ }
+
+ k = hashmap_put(top, d, p);
+ if (k >= 0) {
+ p = strdup(p);
+ if (!p)
+ return -ENOMEM;
+ d = strrchr(p, '/');
+ d --;
+ d = strrchr(p, '/');
+ } else if (k != -EEXIST) {
+ free(p);
+ return k;
+ }
+
+ free(hashmap_remove(bottom, d));
+ k = hashmap_put(bottom, d, p);
+ if (k < 0) {
+ free(p);
+ return k;
+ }
+
+ h = hashmap_get(drops, conf);
+ if (!h) {
+ h = hashmap_new(string_hash_func, string_compare_func);
+ if (!h)
+ return -ENOMEM;
+ hashmap_put(drops, conf, h);
+ conf = strdup(conf);
+ if (!conf)
+ return -ENOMEM;
+ }
+
+ p = strdup(p);
+ if (!p)
+ return -ENOMEM;
+
+ k = hashmap_put(h, path_get_file_name(p), p);
+ if (k < 0) {
+ free(p);
+ if (k != -EEXIST)
+ return k;
+ }
+ }
+ return 0;
+}
+
+static int enumerate_dir(Hashmap *top, Hashmap *bottom, Hashmap *drops, const char *path, bool dropins) {
_cleanup_closedir_ DIR *d;
assert(top);
assert(bottom);
+ assert(drops);
assert(path);
d = opendir(path);
@@ -177,6 +290,9 @@ static int enumerate_dir(Hashmap *top, Hashmap *bottom, const char *path) {
if (!de)
break;
+ if (dropins && de->d_type == DT_DIR && endswith(de->d_name, ".d"))
+ enumerate_dir_d(top, bottom, drops, path, de->d_name);
+
if (!dirent_is_file(de))
continue;
@@ -207,12 +323,14 @@ static int enumerate_dir(Hashmap *top, Hashmap *bottom, const char *path) {
return 0;
}
-static int process_suffix(const char *prefixes, const char *suffix) {
+static int process_suffix(const char *prefixes, const char *suffix, bool dropins) {
const char *p;
char *f;
- Hashmap *top, *bottom=NULL;
+ Hashmap *top, *bottom=NULL, *drops=NULL;
+ Hashmap *h;
+ char *key;
int r = 0, k;
- Iterator i;
+ Iterator i, j;
int n_found = 0;
assert(prefixes);
@@ -230,6 +348,12 @@ static int process_suffix(const char *prefixes, const char *suffix) {
goto finish;
}
+ drops = hashmap_new(string_hash_func, string_compare_func);
+ if (!drops) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
NULSTR_FOREACH(p, prefixes) {
_cleanup_free_ char *t = NULL;
@@ -239,29 +363,36 @@ static int process_suffix(const char *prefixes, const char *suffix) {
goto finish;
}
- k = enumerate_dir(top, bottom, t);
+ k = enumerate_dir(top, bottom, drops, t, dropins);
if (k < 0)
r = k;
log_debug("Looking at %s", t);
}
- HASHMAP_FOREACH(f, top, i) {
+ HASHMAP_FOREACH_KEY(f, key, top, i) {
char *o;
- o = hashmap_get(bottom, path_get_file_name(f));
+ o = hashmap_get(bottom, key);
assert(o);
if (path_equal(o, f)) {
notify_override_unchanged(f);
continue;
}
+ else {
+ k = found_override(f, o);
+ if (k < 0)
+ r = k;
+ n_found ++;
+ }
- k = found_override(f, o);
- if (k < 0)
- r = k;
-
- n_found ++;
+ h = hashmap_get(drops, key);
+ if(h)
+ HASHMAP_FOREACH(o, h, j) {
+ notify_override_extended(f, o);
+ n_found ++;
+ }
}
finish:
@@ -269,25 +400,32 @@ finish:
hashmap_free_free(top);
if (bottom)
hashmap_free_free(bottom);
-
+ if (drops) {
+ HASHMAP_FOREACH_KEY(h, key, drops, i){
+ hashmap_free_free(hashmap_remove(drops, key));
+ hashmap_remove(drops, key);
+ free(key);
+ }
+ hashmap_free(drops);
+ }
return r < 0 ? r : n_found;
}
-static int process_suffix_chop(const char *prefixes, const char *suffix) {
+static int process_suffix_chop(const char *prefixes, const char *suffix, const char *have_dropins) {
const char *p;
assert(prefixes);
assert(suffix);
if (!path_is_absolute(suffix))
- return process_suffix(prefixes, suffix);
+ return process_suffix(prefixes, suffix, nulstr_contains(have_dropins, suffix));
/* Strip prefix from the suffix */
NULSTR_FOREACH(p, prefixes) {
if (startswith(suffix, p)) {
suffix += strlen(p);
suffix += strspn(suffix, "/");
- return process_suffix(prefixes, suffix);
+ return process_suffix(prefixes, suffix, nulstr_contains(have_dropins, suffix));
}
}
@@ -322,6 +460,8 @@ static int parse_flags(const char *flag_str, int flags) {
flags |= SHOW_OVERRIDDEN;
else if (strneq("unchanged", w, l))
flags |= SHOW_UNCHANGED;
+ else if (strneq("extended", w, l))
+ flags |= SHOW_EXTENDED;
else if (strneq("default", w, l))
flags |= SHOW_DEFAULTS;
else
@@ -435,6 +575,10 @@ int main(int argc, char *argv[]) {
"udev/rules.d\0"
"modprobe.d\0";
+ const char have_dropins[] =
+ "systemd/system\0"
+ "systemd/user\0";
+
int r = 0, k;
int n_found = 0;
@@ -460,7 +604,7 @@ int main(int argc, char *argv[]) {
int i;
for (i = optind; i < argc; i++) {
- k = process_suffix_chop(prefixes, argv[i]);
+ k = process_suffix_chop(prefixes, argv[i], have_dropins);
if (k < 0)
r = k;
else
@@ -471,7 +615,7 @@ int main(int argc, char *argv[]) {
const char *n;
NULSTR_FOREACH(n, suffixes) {
- k = process_suffix(prefixes, n);
+ k = process_suffix(prefixes, n, nulstr_contains(have_dropins, n));
if (k < 0)
r = k;
else
--
1.8.1.4
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