util: replace close_nointr_nofail() by a more useful safe_close()

[elogind.git] / src / tmpfiles / tmpfiles.c

diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
index bff95271f526e5ab160c94f69834b4914a5c2e63..33e7cbc05d2dcab940690102c0740d2dd9502d52 100644 (file)
--- a/src/tmpfiles/tmpfiles.c
+++ b/src/tmpfiles/tmpfiles.c
@@ -111,6 +111,7 @@ static bool arg_boot = false;
 
 static char **include_prefixes = NULL;
 static char **exclude_prefixes = NULL;
+static char *arg_root = NULL;
 
 static const char conf_file_dirs[] =
         "/etc/tmpfiles.d\0"
@@ -495,7 +496,7 @@ static int write_one_file(Item *i, const char *path) {
 
                 unescaped = cunescape(i->argument);
                 if (unescaped == NULL) {
-                        close_nointr_nofail(fd);
+                        safe_close(fd);
                         return log_oom();
                 }
 
@@ -504,12 +505,12 @@ static int write_one_file(Item *i, const char *path) {
 
                 if (n < 0 || (size_t) n < l) {
                         log_error("Failed to write file %s: %s", path, n < 0 ? strerror(-n) : "Short write");
-                        close_nointr_nofail(fd);
+                        safe_close(fd);
                         return n < 0 ? n : -EIO;
                 }
         }
 
-        close_nointr_nofail(fd);
+        safe_close(fd);
 
         if (stat(path, &st) < 0) {
                 log_error("stat(%s) failed: %m", path);
@@ -541,7 +542,7 @@ static int recursive_relabel_children(Item *i, const char *path) {
 
         for (;;) {
                 struct dirent *de;
-                bool is_dir;
+                bool dir;
                 int r;
                 _cleanup_free_ char *entry_path = NULL;
 
@@ -566,18 +567,17 @@ static int recursive_relabel_children(Item *i, const char *path) {
                 }
 
                 if (de->d_type == DT_UNKNOWN) {
-                        struct stat st;
-
-                        if (lstat(entry_path, &st) < 0) {
+                        r = is_dir(entry_path);
+                        if (r < 0) {
                                 if (ret == 0 && errno != ENOENT)
                                         ret = -errno;
                                 continue;
                         }
 
-                        is_dir = S_ISDIR(st.st_mode);
+                        dir = r;
 
                 } else
-                        is_dir = de->d_type == DT_DIR;
+                        dir = de->d_type == DT_DIR;
 
                 r = item_set_perms(i, entry_path);
                 if (r < 0) {
@@ -586,7 +586,7 @@ static int recursive_relabel_children(Item *i, const char *path) {
                         continue;
                 }
 
-                if (is_dir) {
+                if (dir) {
                         r = recursive_relabel_children(i, entry_path);
                         if (r < 0 && ret == 0)
                                 ret = r;
@@ -731,7 +731,7 @@ static int create_item(Item *i) {
                 break;
 
         case CREATE_SYMLINK: {
-                char *x;
+                _cleanup_free_ char *x = NULL;
 
                 label_context_set(i->path, S_IFLNK);
                 r = symlink(i->argument, i->path);
@@ -751,12 +751,10 @@ static int create_item(Item *i) {
                 }
 
                 if (!streq(i->argument, x)) {
-                        free(x);
                         log_error("%s is not the right symlinks.", i->path);
                         return -EEXIST;
                 }
 
-                free(x);
                 break;
         }
 
@@ -1190,6 +1188,15 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
         if (!should_include_path(i->path))
                 return 0;
 
+        if (arg_root) {
+                char *p = strappend(arg_root, i->path);
+                if (!p)
+                        return log_oom();
+
+                free(i->path);
+                i->path = p;
+        }
+
         if (user && !streq(user, "-")) {
                 const char *u = user;
 
@@ -1279,7 +1286,8 @@ static int help(void) {
                "     --remove               Remove marked files/directories\n"
                "     --boot                 Execute actions only safe at boot\n"
                "     --prefix=PATH          Only apply rules that apply to paths with the specified prefix\n"
-               "     --exclude-prefix=PATH  Ignore rules that apply to paths with the specified prefix\n",
+               "     --exclude-prefix=PATH  Ignore rules that apply to paths with the specified prefix\n"
+               "     --root=PATH            Operate on an alternate filesystem root\n",
                program_invocation_short_name);
 
         return 0;
@@ -1295,6 +1303,7 @@ static int parse_argv(int argc, char *argv[]) {
                 ARG_BOOT,
                 ARG_PREFIX,
                 ARG_EXCLUDE_PREFIX,
+                ARG_ROOT,
         };
 
         static const struct option options[] = {
@@ -1306,6 +1315,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "boot",           no_argument,         NULL, ARG_BOOT           },
                 { "prefix",         required_argument,   NULL, ARG_PREFIX         },
                 { "exclude-prefix", required_argument,   NULL, ARG_EXCLUDE_PREFIX },
+                { "root",           required_argument,   NULL, ARG_ROOT           },
                 {}
         };
 
@@ -1343,13 +1353,20 @@ static int parse_argv(int argc, char *argv[]) {
                         break;
 
                 case ARG_PREFIX:
-                        if (strv_extend(&include_prefixes, optarg) < 0)
+                        if (strv_push(&include_prefixes, optarg) < 0)
                                 return log_oom();
                         break;
 
                 case ARG_EXCLUDE_PREFIX:
-                        if (strv_extend(&exclude_prefixes, optarg) < 0)
+                        if (strv_push(&exclude_prefixes, optarg) < 0)
+                                return log_oom();
+                        break;
+
+                case ARG_ROOT:
+                        arg_root = path_make_absolute_cwd(optarg);
+                        if (!arg_root)
                                 return log_oom();
+                        path_kill_slashes(arg_root);
                         break;
 
                 case '?':
@@ -1378,7 +1395,7 @@ static int read_config_file(const char *fn, bool ignore_enoent) {
 
         assert(fn);
 
-        r = search_and_fopen_nulstr(fn, "re", conf_file_dirs, &f);
+        r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f);
         if (r < 0) {
                 if (ignore_enoent && r == -ENOENT)
                         return 0;
@@ -1479,7 +1496,7 @@ int main(int argc, char *argv[]) {
                 _cleanup_strv_free_ char **files = NULL;
                 char **f;
 
-                r = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
+                r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs);
                 if (r < 0) {
                         log_error("Failed to enumerate tmpfiles.d files: %s", strerror(-r));
                         goto finish;
@@ -1508,7 +1525,9 @@ finish:
         hashmap_free(items);
         hashmap_free(globs);
 
-        strv_free(include_prefixes);
+        free(include_prefixes);
+        free(exclude_prefixes);
+        free(arg_root);
 
         set_free_free(unix_sockets);