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authorDean Deng <deandeng@google.com>2020-01-16 12:33:07 -0800
committergVisor bot <gvisor-bot@google.com>2020-01-16 12:56:33 -0800
commit07f258497932e53f4651b80a086117ffda843fe3 (patch)
tree25d38f5c7d17bf532a3e330bc860b1d2248cbf78 /pkg/waiter/BUILD
parent7b7c31820b83abcfe43f7170eff1f7953f3f27e2 (diff)
Plumb getting/setting xattrs through InodeOperations and 9p gofer interfaces.
There was a very bare get/setxattr in the InodeOperations interface. Add context.Context to both, size to getxattr, and flags to setxattr. Note that extended attributes are passed around as strings in this implementation, so size is automatically encoded into the value. Size is added in getxattr so that implementations can return ERANGE if a value is larger than can fit in the user-allocated buffer. This prevents us from unnecessarily passing around an arbitrarily large xattr when the user buffer is actually too small. Don't use the existing xattrwalk and xattrcreate messages and define our own, mainly for the sake of simplicity. Extended attributes will be implemented in future commits. PiperOrigin-RevId: 290121300
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