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xpmem: Add xpmem_openat

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In arm64, glibc-open of /dev/xpmem is hooked in sys_openat. This
commit adds xpmem_openat which is called by sys_openat.
This commit silently applies copy_from_user fix to sys_open as well.

Change-Id: I3b4f7bf0e152c359250bb2b56910db9192390cb1
Fujitsu: POSTK_DEBUG_ARCH_DEP_46, POSTK_DEBUG_ARCH_DEP_62
This commit is contained in:
Masamichi Takagi
2018-10-26 15:51:53 +09:00
committed by Dominique Martinet
parent e12d5ed341
commit 04c11f35e9
6 changed files with 83 additions and 110 deletions
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4
arch/arm64/kernel/include/syscall_list.h
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@ -7,11 +7,7 @@ SYSCALL_DELEGATED(25, fcntl)
SYSCALL_HANDLED(29, ioctl)
SYSCALL_DELEGATED(43, statfs)
SYSCALL_DELEGATED(44, fstatfs)
#ifdef POSTK_DEBUG_ARCH_DEP_62 /* Absorb the difference between open and openat args. */
SYSCALL_HANDLED(56, openat)
#else /* POSTK_DEBUG_ARCH_DEP_62 */
SYSCALL_DELEGATED(56, openat)
#endif /* POSTK_DEBUG_ARCH_DEP_62 */
SYSCALL_HANDLED(57, close)
SYSCALL_DELEGATED(61, getdents64)
SYSCALL_DELEGATED(62, lseek)

2
arch/x86_64/kernel/include/syscall_list.h
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@ -133,9 +133,7 @@ SYSCALL_HANDLED(238, set_mempolicy)
SYSCALL_HANDLED(239, get_mempolicy)
SYSCALL_HANDLED(247, waitid)
SYSCALL_HANDLED(256, migrate_pages)
#ifdef POSTK_DEBUG_ARCH_DEP_62 /* Absorb the difference between open and openat args. */
SYSCALL_HANDLED(257, openat)
#endif /* POSTK_DEBUG_ARCH_DEP_62 */
SYSCALL_DELEGATED(270, pselect6)
SYSCALL_DELEGATED(271, ppoll)
SYSCALL_HANDLED(273, set_robust_list)