mirror of https://gitee.com/openkylin/linux.git
f2b20f6ee8
This fixes a bug where the permission was not properly checked in overlayfs. The testcase is ltp/utimensat01. It is also cleaner and safer to do the permission checking in the vfs helper instead of the caller. This patch introduces an additional ia_valid flag ATTR_TOUCH (since touch(1) is the most obvious user of utimes(NULL)) that is passed into notify_change whenever the conditions for this special permission checking mode are met. Reported-by: Aihua Zhang <zhangaihua1@huawei.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Tested-by: Aihua Zhang <zhangaihua1@huawei.com> Cc: <stable@vger.kernel.org> # v3.18+ |
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| clocksource | ||
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| keys | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
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| misc | ||
| net | ||
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| scsi | ||
| soc | ||
| sound | ||
| target | ||
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| uapi | ||
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| Kbuild | ||