sequencer.c: rework search for start of footer to improve clarity

diff --git a/write_or_die.c b/write_or_die.c
index 4c29255df1b637f93ab3d59e0dcab1fa3b40e10b..960f448cffd9ffd4e53763dfed3669bc374b8620 100644 (file)
--- a/write_or_die.c
+++ b/write_or_die.c
@@ -34,21 +34,16 @@ void maybe_flush_or_die(FILE *f, const char *desc)
                        return;
        }
        if (fflush(f)) {
-               /*
-                * On Windows, EPIPE is returned only by the first write()
-                * after the reading end has closed its handle; subsequent
-                * write()s return EINVAL.
-                */
-               if (errno == EPIPE || errno == EINVAL)
+               if (errno == EPIPE)
                        exit(0);
-               die("write failure on %s: %s", desc, strerror(errno));
+               die_errno("write failure on '%s'", desc);
        }
 }
 
 void fsync_or_die(int fd, const char *msg)
 {
        if (fsync(fd) < 0) {
-               die("%s: fsync error (%s)", msg, strerror(errno));
+               die_errno("fsync error on '%s'", msg);
        }
 }
 
@@ -57,7 +52,7 @@ void write_or_die(int fd, const void *buf, size_t count)
        if (write_in_full(fd, buf, count) < 0) {
                if (errno == EPIPE)
                        exit(0);
-               die("write error (%s)", strerror(errno));
+               die_errno("write error");
        }
 }