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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-10-08 11:00:01 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-10-08 11:00:01 -0400 |
| commit | f334bcd94b7d3c0fbc34d518a86548f451ab5faf (patch) | |
| tree | 357b0cbd488db581bc9bf710c3696579d21fac03 /fs/attr.c | |
| parent | 73e8fb2d596d5903cde6dcced39c0b88b5770a56 (diff) | |
| parent | 814184fd402557f3e5960db469157ccdf1fb69da (diff) | |
Merge remote-tracking branch 'ovl/misc' into work.misc
Diffstat (limited to 'fs/attr.c')
| -rw-r--r-- | fs/attr.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/attr.c b/fs/attr.c index 42bb42bb3c72..3c42cab06b5d 100644 --- a/fs/attr.c +++ b/fs/attr.c @@ -202,6 +202,21 @@ int notify_change(struct dentry * dentry, struct iattr * attr, struct inode **de return -EPERM; } + /* + * If utimes(2) and friends are called with times == NULL (or both + * times are UTIME_NOW), then we need to check for write permission + */ + if (ia_valid & ATTR_TOUCH) { + if (IS_IMMUTABLE(inode)) + return -EPERM; + + if (!inode_owner_or_capable(inode)) { + error = inode_permission(inode, MAY_WRITE); + if (error) + return error; + } + } + if ((ia_valid & ATTR_MODE)) { umode_t amode = attr->ia_mode; /* Flag setting protected by i_mutex */ |