sysv-generator: minor simplifications

[elogind.git] / src / sysv-generator / sysv-generator.c

diff --git a/src/sysv-generator/sysv-generator.c b/src/sysv-generator/sysv-generator.c
index a47b0722e0aa50a5afe894dfff2c7e669696dadc..1e4d54888cfd74c516875f1036d79ef207c1dd61 100644 (file)
--- a/src/sysv-generator/sysv-generator.c
+++ b/src/sysv-generator/sysv-generator.c
@@ -147,6 +147,7 @@ static int generate_unit_file(SysvStub *s) {
         _cleanup_free_ char *wants = NULL;
         _cleanup_free_ char *conflicts = NULL;
         int r;
+        struct stat st;
 
         before = strv_join(s->before, " ");
         if (!before)
@@ -168,6 +169,14 @@ static int generate_unit_file(SysvStub *s) {
         if (!unit)
                 return log_oom();
 
+        /* We might already have a symlink with the same name from a Provides:,
+         * or from backup files like /etc/init.d/foo.bak. Real scripts always win,
+         * so remove an existing link */
+        if (lstat(unit, &st) == 0 && S_ISLNK(st.st_mode)) {
+                log_warning("Overwriting existing symlink %s with real service", unit);
+                unlink(unit);
+        }
+
         f = fopen(unit, "wxe");
         if (!f)
                 return log_error_errno(errno, "Failed to create unit file %s: %m", unit);
@@ -265,10 +274,9 @@ static int sysv_translate_facility(const char *name, const char *filename, char
                 "time",                 SPECIAL_TIME_SYNC_TARGET,
         };
 
-        unsigned i;
-        char *r;
+        char *filename_no_sh, *e, *r;
         const char *n;
-        _cleanup_free_ char *filename_no_sh = NULL;
+        unsigned i;
 
         assert(name);
         assert(_r);
@@ -291,11 +299,12 @@ static int sysv_translate_facility(const char *name, const char *filename, char
         }
 
         /* strip ".sh" suffix from file name for comparison */
-        filename_no_sh = strdup(filename);
-        if (!filename_no_sh)
-                return -ENOMEM;
-        if (endswith(filename, ".sh"))
-                filename_no_sh[strlen(filename)-3] = '\0';
+        filename_no_sh = strdupa(filename);
+        e = endswith(filename, ".sh");
+        if (e) {
+                *e = '\0';
+                filename = filename_no_sh;
+        }
 
         /* If we don't know this name, fallback heuristics to figure
          * out whether something is a target or a service alias. */
@@ -306,7 +315,7 @@ static int sysv_translate_facility(const char *name, const char *filename, char
 
                 /* Facilities starting with $ are most likely targets */
                 r = unit_name_build(n, NULL, ".target");
-        } else if (filename && streq(name, filename_no_sh))
+        } else if (filename && streq(name, filename))
                 /* Names equaling the file name of the services are redundant */
                 return 0;
         else
@@ -343,6 +352,8 @@ static int load_sysv(SysvStub *s) {
         if (!f)
                 return errno == ENOENT ? 0 : -errno;
 
+        log_debug("Loading SysV script %s", s->path);
+
         while (!feof(f)) {
                 char l[LINE_MAX], *t;
 
@@ -484,14 +495,13 @@ static int load_sysv(SysvStub *s) {
                                                 return -ENOMEM;
 
                                         r = sysv_translate_facility(n, basename(s->path), &m);
-
                                         if (r < 0)
                                                 return r;
-
                                         if (r == 0)
                                                 continue;
 
                                         if (unit_name_to_type(m) == UNIT_SERVICE) {
+                                                log_debug("Adding Provides: alias '%s' for '%s'", m, s->name);
                                                 r = add_alias(s->name, m);
                                         } else {
                                                 /* NB: SysV targets
@@ -740,8 +750,10 @@ static int enumerate_sysv(LookupPaths lp, Hashmap *all_services) {
                         struct stat st;
                         int r;
 
-                        if (hidden_file(de->d_name))
-                                continue;
+                        dirent_ensure_type(d, de);
+
+                        if (!dirent_is_file(de))
+                            continue;
 
                         if (fstatat(dirfd(d), de->d_name, &st, 0) < 0) {
                                 log_warning_errno(errno, "stat() failed on %s/%s: %m", *path, de->d_name);