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authorVladimir A. Nazarenko <naszar@ya.ru>2015-01-06 19:19:44 -0800
committerH.J. Lu <hjl.tools@gmail.com>2015-01-06 19:51:01 -0800
commitfb87ee96d7dd0714d52004e4676629f8d9db732f (patch)
tree650a8563ae0ea966709d998aeb4391f81df4b87f /misc/tst-mntent.c
parent01238691bb03f0110455b663439eecf9a58c8f83 (diff)
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Fix incorrect mount table entry parsing in __getmntent_r
When mount entry contains only four fields and have more then one space or tab at the and, mp.mnt_freq and mp.mnt_passno will be set to some specific values as side effect from parsing of previus mount entry. It is because sscanf(""," %d %d ", &a, &b) returns -1, but this case is unprocessed. Values of mp.mnt_freq and mp.mnt_passno stays unchanged. This patch is attempt to fix described issue by removing trailing tabs and spaces.
Diffstat (limited to 'misc/tst-mntent.c')
-rw-r--r--misc/tst-mntent.c22
1 files changed, 21 insertions, 1 deletions
diff --git a/misc/tst-mntent.c b/misc/tst-mntent.c
index 802b56e437..876c89f8ed 100644
--- a/misc/tst-mntent.c
+++ b/misc/tst-mntent.c
@@ -73,7 +73,27 @@ main (int argc, char *argv[])
puts ("Error while reading written entry back in");
result = 1;
}
- }
+
+ /* Part III: Entry with whitespaces at the end of a line. */
+ rewind (fp);
+
+ fputs ("/foo\\040dir /bar\\040dir auto bind \t \n", fp);
+
+ rewind (fp);
+
+ mnt = getmntent (fp);
+
+ if (strcmp (mnt->mnt_fsname, "/foo dir") != 0
+ || strcmp (mnt->mnt_dir, "/bar dir") != 0
+ || strcmp (mnt->mnt_type, "auto") != 0
+ || strcmp (mnt->mnt_opts, "bind") != 0
+ || mnt->mnt_freq != 0
+ || mnt->mnt_passno != 0)
+ {
+ puts ("Error while reading entry with trailing whitespaces");
+ result = 1;
+ }
+ }
return result;
}