Messages in this thread | | | From | David Drysdale <> | Subject | [PATCH 0/3] fs: add O_BENEATH flag to openat(2) | Date | Mon, 3 Nov 2014 11:48:22 +0000 |
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This change adds a new O_BENEATH flag for openat(2) which restricts the provided path, rejecting (with -EACCES) paths that are not beneath the provided dfd.
This change was previously included as part of a larger patchset (https://lkml.org/lkml/2014/7/25/426) for Capsicum support; however, it is potentially useful as an independent change so I've pulled it out separately here.
In particular, various folks from Chrome[OS] have indicated an interest in having this functionality.
Changes since the version included in the Capsicum v2 patchset: - Add tests of normal symlinks - Fix man-page typo - Update patch to 3.17
Changes from v1 to v2 of Capsicum patchset: - renamed O_BENEATH_ONLY to O_BENEATH [Christoph Hellwig]
David Drysdale (2): fs: add O_BENEATH flag to openat(2) selftests: Add test of O_BENEATH & openat(2)
arch/alpha/include/uapi/asm/fcntl.h | 1 + arch/parisc/include/uapi/asm/fcntl.h | 1 + arch/sparc/include/uapi/asm/fcntl.h | 1 + fs/fcntl.c | 5 +- fs/namei.c | 43 ++++++--- fs/open.c | 4 +- include/linux/namei.h | 1 + include/uapi/asm-generic/fcntl.h | 4 + tools/testing/selftests/Makefile | 1 + tools/testing/selftests/openat/.gitignore | 3 + tools/testing/selftests/openat/Makefile | 24 +++++ tools/testing/selftests/openat/openat.c | 149 ++++++++++++++++++++++++++++++ 12 files changed, 220 insertions(+), 17 deletions(-) create mode 100644 tools/testing/selftests/openat/.gitignore create mode 100644 tools/testing/selftests/openat/Makefile create mode 100644 tools/testing/selftests/openat/openat.c
-- 2.1.0.rc2.206.gedb03e5
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