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Block creation of the new nodes for read-only tmpfs mounts.

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Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D19737
This commit is contained in:
Konstantin Belousov 2019-04-02 13:41:26 +00:00
parent 8581fc9ad5
commit ae26575394
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=345799
1 changed files with 2 additions and 0 deletions
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2
sys/fs/tmpfs/tmpfs_subr.c
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@ -218,6 +218,8 @@ tmpfs_alloc_node(struct mount *mp, struct tmpfs_mount *tmp, enum vtype type,
*/
return (EBUSY);
}
if ((mp->mnt_kern_flag & MNT_RDONLY) != 0)
return (EROFS);
nnode = (struct tmpfs_node *)uma_zalloc_arg(tmp->tm_node_pool, tmp,
M_WAITOK);