sysusers: add minimal tool to reconstruct /etc/passwd and /etc/group from static...

[elogind.git] / src / shared / util.c

diff --git a/src/shared/util.c b/src/shared/util.c
index 91cbf2045444cffdc78f7c188382ffefc2ee2bae..a7aec5c54f53114b991084277055901e77f74a96 100644 (file)
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -4007,24 +4007,16 @@ int fd_wait_for_event(int fd, int event, usec_t t) {
 int fopen_temporary(const char *path, FILE **_f, char **_temp_path) {
         FILE *f;
         char *t;
-        const char *fn;
-        size_t k;
         int fd;
 
         assert(path);
         assert(_f);
         assert(_temp_path);
 
-        t = new(char, strlen(path) + 1 + 6 + 1);
+        t = strappend(path, ".XXXXXX");
         if (!t)
                 return -ENOMEM;
 
-        fn = basename(path);
-        k = fn - path;
-        memcpy(t, path, k);
-        t[k] = '.';
-        stpcpy(stpcpy(t+k+1, fn), "XXXXXX");
-
         fd = mkostemp_safe(t, O_WRONLY|O_CLOEXEC);
         if (fd < 0) {
                 free(t);
@@ -6665,3 +6657,14 @@ int bind_remount_recursive(const char *prefix, bool ro) {
                 }
         }
 }
+
+int fflush_and_check(FILE *f) {
+
+        errno = 0;
+        fflush(f);
+
+        if (ferror(f))
+                return errno ? -errno : -EIO;
+
+        return 0;
+}