X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fmkdir.c;h=f941efb401809333240dbef8e0eeefdbc3919cee;hb=2968644080fd103062f070e83edd620e0a58c44d;hp=43c6ea6d4a1616bc85775fb48418be8c52fbc6e8;hpb=69c2b6be8fc607412a13cd0ea03a629b4965c816;p=elogind.git

diff --git a/src/shared/mkdir.c b/src/shared/mkdir.c
index 43c6ea6d4..f941efb40 100644
--- a/src/shared/mkdir.c
+++ b/src/shared/mkdir.c
@@ -41,9 +41,11 @@ int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, mkd
         if (lstat(path, &st) < 0)
                 return -errno;
 
-        if ((st.st_mode & 0777) != mode ||
-            st.st_uid != uid ||
-            st.st_gid != gid ||
+        if ((st.st_mode & 0007) > (mode & 0007) ||
+            (st.st_mode & 0070) > (mode & 0070) ||
+            (st.st_mode & 0700) > (mode & 0700) ||
+            (uid != (uid_t) -1 && st.st_uid != uid) ||
+            (gid != (gid_t) -1 && st.st_gid != gid) ||
             !S_ISDIR(st.st_mode)) {
                 errno = EEXIST;
                 return -errno;
@@ -56,11 +58,16 @@ int mkdir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid) {
         return mkdir_safe_internal(path, mode, uid, gid, mkdir);
 }
 
-static int is_dir(const char* path) {
+int is_dir(const char* path, bool follow) {
         struct stat st;
 
-        if (stat(path, &st) < 0)
-                return -errno;
+        if (follow) {
+                if (stat(path, &st) < 0)
+                        return -errno;
+        } else {
+                if (lstat(path, &st) < 0)
+                        return -errno;
+        }
 
         return S_ISDIR(st.st_mode);
 }
@@ -83,7 +90,7 @@ int mkdir_parents_internal(const char *prefix, const char *path, mode_t mode, mk
                 return 0;
 
         p = strndupa(path, e - path);
-        r = is_dir(p);
+        r = is_dir(p, true);
         if (r > 0)
                 return 0;
         if (r == 0)
@@ -128,7 +135,7 @@ int mkdir_p_internal(const char *prefix, const char *path, mode_t mode, mkdir_fu
                 return r;
 
         r = _mkdir(path, mode);
-        if (r < 0 && (errno != EEXIST || is_dir(path) <= 0))
+        if (r < 0 && (errno != EEXIST || is_dir(path, true) <= 0))
                 return -errno;
 
         return 0;