X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fshared%2Futil.c;h=4143f6d643ebca2cb02c105ba0504d1a55d9f72d;hp=61d6680dddfb5c5dabbe9a45b38b7ebe658f9ee6;hb=a9169c1c589bf7c7a29e7905d17e350ce7c7c48e;hpb=d5099efc47d4e6ac60816b5381a5f607ab03f06e

diff --git a/src/shared/util.c b/src/shared/util.c
index 61d6680dd..4143f6d64 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -1878,9 +1878,6 @@ int open_terminal(const char *name, int mode) {
                 c++;
         }
 
-        if (fd < 0)
-                return -errno;
-
         r = isatty(fd);
         if (r < 0) {
                 safe_close(fd);
@@ -2077,7 +2074,7 @@ int acquire_terminal(
                  * ended our handle will be dead. It's important that
                  * we do this after sleeping, so that we don't enter
                  * an endless loop. */
-                safe_close(fd);
+                fd = safe_close(fd);
         }
 
         safe_close(notify);
@@ -3276,7 +3273,7 @@ unsigned columns(void) {
         c = 0;
         e = getenv("COLUMNS");
         if (e)
-                safe_atoi(e, &c);
+                (void) safe_atoi(e, &c);
 
         if (c <= 0)
                 c = fd_columns(STDOUT_FILENO);
@@ -3310,7 +3307,7 @@ unsigned lines(void) {
         l = 0;
         e = getenv("LINES");
         if (e)
-                safe_atou(e, &l);
+                (void) safe_atou(e, &l);
 
         if (l <= 0)
                 l = fd_lines(STDOUT_FILENO);
@@ -6936,10 +6933,21 @@ int is_symlink(const char *path) {
         if (lstat(path, &info) < 0)
                 return -errno;
 
-        if (S_ISLNK(info.st_mode))
-                return 1;
+        return !!S_ISLNK(info.st_mode);
+}
 
-        return 0;
+int is_dir(const char* path, bool follow) {
+        struct stat st;
+
+        if (follow) {
+                if (stat(path, &st) < 0)
+                        return -errno;
+        } else {
+                if (lstat(path, &st) < 0)
+                        return -errno;
+        }
+
+        return !!S_ISDIR(st.st_mode);
 }
 
 int unquote_first_word(const char **p, char **ret) {
@@ -7167,3 +7175,23 @@ int free_and_strdup(char **p, const char *s) {
 
         return 0;
 }
+
+int sethostname_idempotent(const char *s) {
+        int r;
+        char buf[HOST_NAME_MAX + 1] = {};
+
+        assert(s);
+
+        r = gethostname(buf, sizeof(buf));
+        if (r < 0)
+                return -errno;
+
+        if (streq(buf, s))
+                return 0;
+
+        r = sethostname(s, strlen(s));
+        if (r < 0)
+                return -errno;
+
+        return 1;
+}