Author: mckusick
Date: Fri Feb 2 22:06:15 2018
New Revision: 328813
URL: https://svnweb.freebsd.org/changeset/base/328813
Log:
In the sbwrite(3) function, ensure that the file descriptor has been
upgraded to writable.
Reported by: Kyle Evans <kev...@freebsd.org>
Modified:
head/lib/libufs/sblock.c
Modified: head/lib/libufs/sblock.c
==============================================================================
--- head/lib/libufs/sblock.c Fri Feb 2 22:05:36 2018 (r328812)
+++ head/lib/libufs/sblock.c Fri Feb 2 22:06:15 2018 (r328813)
@@ -96,8 +96,15 @@ int
sbwrite(struct uufsd *disk, int all)
{
struct fs *fs;
+ int rv;
ERROR(disk, NULL);
+
+ rv = ufs_disk_write(disk);
+ if (rv == -1) {
+ ERROR(disk, "failed to open disk for writing");
+ return (-1);
+ }
fs = &disk->d_fs;
if ((errno = sbput(disk->d_fd, fs, all ? fs->fs_ncg : 0)) != 0) {
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