fileio: rename function parameter to avoid masking global symbol

> glibc exports a function called sync(), we should probably avoid
> overloading that as a variable here locally (gcc even used to warn about
> that, not sure why it doesn't anymore), to avoid confusion around what
> "if (sync)" actually means

diff --git a/src/basic/fileio.c b/src/basic/fileio.c
index 277aea51a9ccad1f730707c9e32acf050e42ae45..6220d1c11dabbfce020c16cfad68f962005c8f72 100644 (file)
--- a/src/basic/fileio.c
+++ b/src/basic/fileio.c
@@ -71,7 +71,7 @@ int write_string_stream_ts(FILE *f, const char *line, bool enforce_newline, stru
         return fflush_and_check(f);
 }
 
-static int write_string_file_atomic(const char *fn, const char *line, bool enforce_newline, bool sync) {
+static int write_string_file_atomic(const char *fn, const char *line, bool enforce_newline, bool do_fsync) {
         _cleanup_fclose_ FILE *f = NULL;
         _cleanup_free_ char *p = NULL;
         int r;
@@ -86,7 +86,7 @@ static int write_string_file_atomic(const char *fn, const char *line, bool enfor
         (void) fchmod_umask(fileno(f), 0644);
 
         r = write_string_stream(f, line, enforce_newline);
-        if (r >= 0 && sync)
+        if (r >= 0 && do_fsync)
                 r = fflush_sync_and_check(f);
 
         if (r >= 0) {
@@ -107,8 +107,8 @@ int write_string_file_ts(const char *fn, const char *line, WriteStringFileFlags
         assert(fn);
         assert(line);
 
-        /* We don't know how to verify whether the file contents is on-disk. */
-        assert(!((flags & WRITE_STRING_FILE_SYNC) && (flags & WRITE_STRING_FILE_VERIFY_ON_FAILURE)));
+        /* We don't know how to verify whether the file contents was already on-disk. */
+        assert(!((flags & WRITE_STRING_FILE_VERIFY_ON_FAILURE) && (flags & WRITE_STRING_FILE_SYNC)));
 
         if (flags & WRITE_STRING_FILE_ATOMIC) {
                 assert(flags & WRITE_STRING_FILE_CREATE);