svn commit: r280224 - stable/10/sys/sys
Julian Elischer
julian at freebsd.org
Thu Mar 19 04:33:57 UTC 2015
On 3/18/15 11:20 PM, Robert Watson wrote:
> Author: rwatson
> Date: Wed Mar 18 15:20:08 2015
> New Revision: 280224
> URL: https://svnweb.freebsd.org/changeset/base/280224
>
> Log:
> Merge r263232 from head to stable/10:
>
> Rename capability.h to capsicum.h: the original name conflicts with the
> draft POSIX.1e capability.h used on some systems (e.g., Linux). On
> FreeBSD, leave a wrapper header so that current code continues to compile.
>
> We will eventually want to deprecate the old header as the presence of a
> capability.h may be confusing some configure scripts.
shouldn't there be a #warn there to print out a message about
changing hte include in the source?
>
> Suggested by: David Drysdale <drysdale at google.com>
> Discussed on: cl-capsicum-discuss
> MFC after: 3 weeks
>
> Sponsored by: Google, Inc.
>
> Added:
> stable/10/sys/sys/capsicum.h
> - copied, changed from r280165, stable/10/sys/sys/capability.h
> Modified:
> stable/10/sys/sys/capability.h
> Directory Properties:
> stable/10/ (props changed)
> stable/10/sys/gnu/dts/ (props changed)
>
> Modified: stable/10/sys/sys/capability.h
> ==============================================================================
> --- stable/10/sys/sys/capability.h Wed Mar 18 15:16:31 2015 (r280223)
> +++ stable/10/sys/sys/capability.h Wed Mar 18 15:20:08 2015 (r280224)
> @@ -1,14 +1,10 @@
> /*-
> - * Copyright (c) 2008-2010 Robert N. M. Watson
> - * Copyright (c) 2012 FreeBSD Foundation
> + * Copyright (c) 2014 Robert N. M. Watson
> * All rights reserved.
> *
> * This software was developed at the University of Cambridge Computer
> * Laboratory with support from a grant from Google, Inc.
> *
> - * Portions of this software were developed by Pawel Jakub Dawidek under
> - * sponsorship from the FreeBSD Foundation.
> - *
> * Redistribution and use in source and binary forms, with or without
> * modification, are permitted provided that the following conditions
> * are met:
> @@ -34,389 +30,14 @@
> */
>
> /*
> - * Definitions for FreeBSD capabilities facility.
> + * Historically, the key userspace and kernel Capsicum definitions were found
> + * in this file. However, it conflicted with POSIX.1e's capability.h, so has
> + * been renamed capsicum.h. The file remains for backwards compatibility
> + * reasons as a nested include.
> */
> #ifndef _SYS_CAPABILITY_H_
> #define _SYS_CAPABILITY_H_
>
> -#include <sys/cdefs.h>
> -#include <sys/param.h>
> -
> -#include <sys/caprights.h>
> -#include <sys/file.h>
> -#include <sys/fcntl.h>
> -
> -#ifndef _KERNEL
> -#include <stdbool.h>
> -#endif
> -
> -#define CAPRIGHT(idx, bit) ((1ULL << (57 + (idx))) | (bit))
> -
> -/*
> - * Possible rights on capabilities.
> - *
> - * Notes:
> - * Some system calls don't require a capability in order to perform an
> - * operation on an fd. These include: close, dup, dup2.
> - *
> - * sendfile is authorized using CAP_READ on the file and CAP_WRITE on the
> - * socket.
> - *
> - * mmap() and aio*() system calls will need special attention as they may
> - * involve reads or writes depending a great deal on context.
> - */
> -
> -/* INDEX 0 */
> -
> -/*
> - * General file I/O.
> - */
> -/* Allows for openat(O_RDONLY), read(2), readv(2). */
> -#define CAP_READ CAPRIGHT(0, 0x0000000000000001ULL)
> -/* Allows for openat(O_WRONLY | O_APPEND), write(2), writev(2). */
> -#define CAP_WRITE CAPRIGHT(0, 0x0000000000000002ULL)
> -/* Allows for lseek(fd, 0, SEEK_CUR). */
> -#define CAP_SEEK_TELL CAPRIGHT(0, 0x0000000000000004ULL)
> -/* Allows for lseek(2). */
> -#define CAP_SEEK (CAP_SEEK_TELL | 0x0000000000000008ULL)
> -/* Allows for aio_read(2), pread(2), preadv(2). */
> -#define CAP_PREAD (CAP_SEEK | CAP_READ)
> -/*
> - * Allows for aio_write(2), openat(O_WRONLY) (without O_APPEND), pwrite(2),
> - * pwritev(2).
> - */
> -#define CAP_PWRITE (CAP_SEEK | CAP_WRITE)
> -/* Allows for mmap(PROT_NONE). */
> -#define CAP_MMAP CAPRIGHT(0, 0x0000000000000010ULL)
> -/* Allows for mmap(PROT_READ). */
> -#define CAP_MMAP_R (CAP_MMAP | CAP_SEEK | CAP_READ)
> -/* Allows for mmap(PROT_WRITE). */
> -#define CAP_MMAP_W (CAP_MMAP | CAP_SEEK | CAP_WRITE)
> -/* Allows for mmap(PROT_EXEC). */
> -#define CAP_MMAP_X (CAP_MMAP | CAP_SEEK | 0x0000000000000020ULL)
> -/* Allows for mmap(PROT_READ | PROT_WRITE). */
> -#define CAP_MMAP_RW (CAP_MMAP_R | CAP_MMAP_W)
> -/* Allows for mmap(PROT_READ | PROT_EXEC). */
> -#define CAP_MMAP_RX (CAP_MMAP_R | CAP_MMAP_X)
> -/* Allows for mmap(PROT_WRITE | PROT_EXEC). */
> -#define CAP_MMAP_WX (CAP_MMAP_W | CAP_MMAP_X)
> -/* Allows for mmap(PROT_READ | PROT_WRITE | PROT_EXEC). */
> -#define CAP_MMAP_RWX (CAP_MMAP_R | CAP_MMAP_W | CAP_MMAP_X)
> -/* Allows for openat(O_CREAT). */
> -#define CAP_CREATE CAPRIGHT(0, 0x0000000000000040ULL)
> -/* Allows for openat(O_EXEC) and fexecve(2) in turn. */
> -#define CAP_FEXECVE CAPRIGHT(0, 0x0000000000000080ULL)
> -/* Allows for openat(O_SYNC), openat(O_FSYNC), fsync(2), aio_fsync(2). */
> -#define CAP_FSYNC CAPRIGHT(0, 0x0000000000000100ULL)
> -/* Allows for openat(O_TRUNC), ftruncate(2). */
> -#define CAP_FTRUNCATE CAPRIGHT(0, 0x0000000000000200ULL)
> -
> -/* Lookups - used to constrain *at() calls. */
> -#define CAP_LOOKUP CAPRIGHT(0, 0x0000000000000400ULL)
> -
> -/* VFS methods. */
> -/* Allows for fchdir(2). */
> -#define CAP_FCHDIR CAPRIGHT(0, 0x0000000000000800ULL)
> -/* Allows for fchflags(2). */
> -#define CAP_FCHFLAGS CAPRIGHT(0, 0x0000000000001000ULL)
> -/* Allows for fchflags(2) and chflagsat(2). */
> -#define CAP_CHFLAGSAT (CAP_FCHFLAGS | CAP_LOOKUP)
> -/* Allows for fchmod(2). */
> -#define CAP_FCHMOD CAPRIGHT(0, 0x0000000000002000ULL)
> -/* Allows for fchmod(2) and fchmodat(2). */
> -#define CAP_FCHMODAT (CAP_FCHMOD | CAP_LOOKUP)
> -/* Allows for fchown(2). */
> -#define CAP_FCHOWN CAPRIGHT(0, 0x0000000000004000ULL)
> -/* Allows for fchown(2) and fchownat(2). */
> -#define CAP_FCHOWNAT (CAP_FCHOWN | CAP_LOOKUP)
> -/* Allows for fcntl(2). */
> -#define CAP_FCNTL CAPRIGHT(0, 0x0000000000008000ULL)
> -/*
> - * Allows for flock(2), openat(O_SHLOCK), openat(O_EXLOCK),
> - * fcntl(F_SETLK_REMOTE), fcntl(F_SETLKW), fcntl(F_SETLK), fcntl(F_GETLK).
> - */
> -#define CAP_FLOCK CAPRIGHT(0, 0x0000000000010000ULL)
> -/* Allows for fpathconf(2). */
> -#define CAP_FPATHCONF CAPRIGHT(0, 0x0000000000020000ULL)
> -/* Allows for UFS background-fsck operations. */
> -#define CAP_FSCK CAPRIGHT(0, 0x0000000000040000ULL)
> -/* Allows for fstat(2). */
> -#define CAP_FSTAT CAPRIGHT(0, 0x0000000000080000ULL)
> -/* Allows for fstat(2), fstatat(2) and faccessat(2). */
> -#define CAP_FSTATAT (CAP_FSTAT | CAP_LOOKUP)
> -/* Allows for fstatfs(2). */
> -#define CAP_FSTATFS CAPRIGHT(0, 0x0000000000100000ULL)
> -/* Allows for futimes(2). */
> -#define CAP_FUTIMES CAPRIGHT(0, 0x0000000000200000ULL)
> -/* Allows for futimes(2) and futimesat(2). */
> -#define CAP_FUTIMESAT (CAP_FUTIMES | CAP_LOOKUP)
> -/* Allows for linkat(2) and renameat(2) (destination directory descriptor). */
> -#define CAP_LINKAT (CAP_LOOKUP | 0x0000000000400000ULL)
> -/* Allows for mkdirat(2). */
> -#define CAP_MKDIRAT (CAP_LOOKUP | 0x0000000000800000ULL)
> -/* Allows for mkfifoat(2). */
> -#define CAP_MKFIFOAT (CAP_LOOKUP | 0x0000000001000000ULL)
> -/* Allows for mknodat(2). */
> -#define CAP_MKNODAT (CAP_LOOKUP | 0x0000000002000000ULL)
> -/* Allows for renameat(2). */
> -#define CAP_RENAMEAT (CAP_LOOKUP | 0x0000000004000000ULL)
> -/* Allows for symlinkat(2). */
> -#define CAP_SYMLINKAT (CAP_LOOKUP | 0x0000000008000000ULL)
> -/*
> - * Allows for unlinkat(2) and renameat(2) if destination object exists and
> - * will be removed.
> - */
> -#define CAP_UNLINKAT (CAP_LOOKUP | 0x0000000010000000ULL)
> -
> -/* Socket operations. */
> -/* Allows for accept(2) and accept4(2). */
> -#define CAP_ACCEPT CAPRIGHT(0, 0x0000000020000000ULL)
> -/* Allows for bind(2). */
> -#define CAP_BIND CAPRIGHT(0, 0x0000000040000000ULL)
> -/* Allows for connect(2). */
> -#define CAP_CONNECT CAPRIGHT(0, 0x0000000080000000ULL)
> -/* Allows for getpeername(2). */
> -#define CAP_GETPEERNAME CAPRIGHT(0, 0x0000000100000000ULL)
> -/* Allows for getsockname(2). */
> -#define CAP_GETSOCKNAME CAPRIGHT(0, 0x0000000200000000ULL)
> -/* Allows for getsockopt(2). */
> -#define CAP_GETSOCKOPT CAPRIGHT(0, 0x0000000400000000ULL)
> -/* Allows for listen(2). */
> -#define CAP_LISTEN CAPRIGHT(0, 0x0000000800000000ULL)
> -/* Allows for sctp_peeloff(2). */
> -#define CAP_PEELOFF CAPRIGHT(0, 0x0000001000000000ULL)
> -#define CAP_RECV CAP_READ
> -#define CAP_SEND CAP_WRITE
> -/* Allows for setsockopt(2). */
> -#define CAP_SETSOCKOPT CAPRIGHT(0, 0x0000002000000000ULL)
> -/* Allows for shutdown(2). */
> -#define CAP_SHUTDOWN CAPRIGHT(0, 0x0000004000000000ULL)
> -
> -/* Allows for bindat(2) on a directory descriptor. */
> -#define CAP_BINDAT (CAP_LOOKUP | 0x0000008000000000ULL)
> -/* Allows for connectat(2) on a directory descriptor. */
> -#define CAP_CONNECTAT (CAP_LOOKUP | 0x0000010000000000ULL)
> -
> -#define CAP_SOCK_CLIENT \
> - (CAP_CONNECT | CAP_GETPEERNAME | CAP_GETSOCKNAME | CAP_GETSOCKOPT | \
> - CAP_PEELOFF | CAP_RECV | CAP_SEND | CAP_SETSOCKOPT | CAP_SHUTDOWN)
> -#define CAP_SOCK_SERVER \
> - (CAP_ACCEPT | CAP_BIND | CAP_GETPEERNAME | CAP_GETSOCKNAME | \
> - CAP_GETSOCKOPT | CAP_LISTEN | CAP_PEELOFF | CAP_RECV | CAP_SEND | \
> - CAP_SETSOCKOPT | CAP_SHUTDOWN)
> -
> -/* All used bits for index 0. */
> -#define CAP_ALL0 CAPRIGHT(0, 0x0000007FFFFFFFFFULL)
> -
> -/* Available bits for index 0. */
> -#define CAP_UNUSED0_40 CAPRIGHT(0, 0x0000008000000000ULL)
> -/* ... */
> -#define CAP_UNUSED0_57 CAPRIGHT(0, 0x0100000000000000ULL)
> -
> -/* INDEX 1 */
> -
> -/* Mandatory Access Control. */
> -/* Allows for mac_get_fd(3). */
> -#define CAP_MAC_GET CAPRIGHT(1, 0x0000000000000001ULL)
> -/* Allows for mac_set_fd(3). */
> -#define CAP_MAC_SET CAPRIGHT(1, 0x0000000000000002ULL)
> -
> -/* Methods on semaphores. */
> -#define CAP_SEM_GETVALUE CAPRIGHT(1, 0x0000000000000004ULL)
> -#define CAP_SEM_POST CAPRIGHT(1, 0x0000000000000008ULL)
> -#define CAP_SEM_WAIT CAPRIGHT(1, 0x0000000000000010ULL)
> -
> -/* Allows select(2) and poll(2) on descriptor. */
> -#define CAP_EVENT CAPRIGHT(1, 0x0000000000000020ULL)
> -/* Allows for kevent(2) on kqueue descriptor with eventlist != NULL. */
> -#define CAP_KQUEUE_EVENT CAPRIGHT(1, 0x0000000000000040ULL)
> -
> -/* Strange and powerful rights that should not be given lightly. */
> -/* Allows for ioctl(2). */
> -#define CAP_IOCTL CAPRIGHT(1, 0x0000000000000080ULL)
> -#define CAP_TTYHOOK CAPRIGHT(1, 0x0000000000000100ULL)
> -
> -/* Process management via process descriptors. */
> -/* Allows for pdgetpid(2). */
> -#define CAP_PDGETPID CAPRIGHT(1, 0x0000000000000200ULL)
> -/* Allows for pdwait4(2). */
> -#define CAP_PDWAIT CAPRIGHT(1, 0x0000000000000400ULL)
> -/* Allows for pdkill(2). */
> -#define CAP_PDKILL CAPRIGHT(1, 0x0000000000000800ULL)
> -
> -/* Extended attributes. */
> -/* Allows for extattr_delete_fd(2). */
> -#define CAP_EXTATTR_DELETE CAPRIGHT(1, 0x0000000000001000ULL)
> -/* Allows for extattr_get_fd(2). */
> -#define CAP_EXTATTR_GET CAPRIGHT(1, 0x0000000000002000ULL)
> -/* Allows for extattr_list_fd(2). */
> -#define CAP_EXTATTR_LIST CAPRIGHT(1, 0x0000000000004000ULL)
> -/* Allows for extattr_set_fd(2). */
> -#define CAP_EXTATTR_SET CAPRIGHT(1, 0x0000000000008000ULL)
> -
> -/* Access Control Lists. */
> -/* Allows for acl_valid_fd_np(3). */
> -#define CAP_ACL_CHECK CAPRIGHT(1, 0x0000000000010000ULL)
> -/* Allows for acl_delete_fd_np(3). */
> -#define CAP_ACL_DELETE CAPRIGHT(1, 0x0000000000020000ULL)
> -/* Allows for acl_get_fd(3) and acl_get_fd_np(3). */
> -#define CAP_ACL_GET CAPRIGHT(1, 0x0000000000040000ULL)
> -/* Allows for acl_set_fd(3) and acl_set_fd_np(3). */
> -#define CAP_ACL_SET CAPRIGHT(1, 0x0000000000080000ULL)
> -
> -/* Allows for kevent(2) on kqueue descriptor with changelist != NULL. */
> -#define CAP_KQUEUE_CHANGE CAPRIGHT(1, 0x0000000000100000ULL)
> -
> -#define CAP_KQUEUE (CAP_KQUEUE_EVENT | CAP_KQUEUE_CHANGE)
> -
> -/* All used bits for index 1. */
> -#define CAP_ALL1 CAPRIGHT(1, 0x00000000001FFFFFULL)
> -
> -/* Available bits for index 1. */
> -#define CAP_UNUSED1_22 CAPRIGHT(1, 0x0000000000200000ULL)
> -/* ... */
> -#define CAP_UNUSED1_57 CAPRIGHT(1, 0x0100000000000000ULL)
> -
> -/* Backward compatibility. */
> -#define CAP_POLL_EVENT CAP_EVENT
> -
> -#define CAP_ALL(rights) do { \
> - (rights)->cr_rights[0] = \
> - ((uint64_t)CAP_RIGHTS_VERSION << 62) | CAP_ALL0; \
> - (rights)->cr_rights[1] = CAP_ALL1; \
> -} while (0)
> -
> -#define CAP_NONE(rights) do { \
> - (rights)->cr_rights[0] = \
> - ((uint64_t)CAP_RIGHTS_VERSION << 62) | CAPRIGHT(0, 0ULL); \
> - (rights)->cr_rights[1] = CAPRIGHT(1, 0ULL); \
> -} while (0)
> -
> -#define CAPRVER(right) ((int)((right) >> 62))
> -#define CAPVER(rights) CAPRVER((rights)->cr_rights[0])
> -#define CAPARSIZE(rights) (CAPVER(rights) + 2)
> -#define CAPIDXBIT(right) ((int)(((right) >> 57) & 0x1F))
> -
> -/*
> - * Allowed fcntl(2) commands.
> - */
> -#define CAP_FCNTL_GETFL (1 << F_GETFL)
> -#define CAP_FCNTL_SETFL (1 << F_SETFL)
> -#if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112
> -#define CAP_FCNTL_GETOWN (1 << F_GETOWN)
> -#define CAP_FCNTL_SETOWN (1 << F_SETOWN)
> -#endif
> -#if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112
> -#define CAP_FCNTL_ALL (CAP_FCNTL_GETFL | CAP_FCNTL_SETFL | \
> - CAP_FCNTL_GETOWN | CAP_FCNTL_SETOWN)
> -#else
> -#define CAP_FCNTL_ALL (CAP_FCNTL_GETFL | CAP_FCNTL_SETFL)
> -#endif
> -
> -#define CAP_IOCTLS_ALL SSIZE_MAX
> -
> -#define cap_rights_init(...) \
> - __cap_rights_init(CAP_RIGHTS_VERSION, __VA_ARGS__, 0ULL)
> -cap_rights_t *__cap_rights_init(int version, cap_rights_t *rights, ...);
> -
> -#define cap_rights_set(rights, ...) \
> - __cap_rights_set((rights), __VA_ARGS__, 0ULL)
> -cap_rights_t *__cap_rights_set(cap_rights_t *rights, ...);
> -
> -#define cap_rights_clear(rights, ...) \
> - __cap_rights_clear((rights), __VA_ARGS__, 0ULL)
> -cap_rights_t *__cap_rights_clear(cap_rights_t *rights, ...);
> -
> -#define cap_rights_is_set(rights, ...) \
> - __cap_rights_is_set((rights), __VA_ARGS__, 0ULL)
> -bool __cap_rights_is_set(const cap_rights_t *rights, ...);
> -
> -bool cap_rights_is_valid(const cap_rights_t *rights);
> -cap_rights_t *cap_rights_merge(cap_rights_t *dst, const cap_rights_t *src);
> -cap_rights_t *cap_rights_remove(cap_rights_t *dst, const cap_rights_t *src);
> -bool cap_rights_contains(const cap_rights_t *big, const cap_rights_t *little);
> -
> -#ifdef _KERNEL
> -
> -#include <sys/systm.h>
> -
> -#define IN_CAPABILITY_MODE(td) ((td->td_ucred->cr_flags & CRED_FLAG_CAPMODE) != 0)
> -
> -struct filedesc;
> -struct filedescent;
> -
> -/*
> - * Test whether a capability grants the requested rights.
> - */
> -int cap_check(const cap_rights_t *havep, const cap_rights_t *needp);
> -/*
> - * Convert capability rights into VM access flags.
> - */
> -u_char cap_rights_to_vmprot(cap_rights_t *havep);
> -
> -/*
> - * For the purposes of procstat(1) and similar tools, allow kern_descrip.c to
> - * extract the rights from a capability.
> - */
> -cap_rights_t *cap_rights_fde(struct filedescent *fde);
> -cap_rights_t *cap_rights(struct filedesc *fdp, int fd);
> -
> -int cap_ioctl_check(struct filedesc *fdp, int fd, u_long cmd);
> -int cap_fcntl_check_fde(struct filedescent *fde, int cmd);
> -int cap_fcntl_check(struct filedesc *fdp, int fd, int cmd);
> -
> -#else /* !_KERNEL */
> -
> -__BEGIN_DECLS
> -/*
> - * cap_enter(): Cause the process to enter capability mode, which will
> - * prevent it from directly accessing global namespaces. System calls will
> - * be limited to process-local, process-inherited, or file descriptor
> - * operations. If already in capability mode, a no-op.
> - */
> -int cap_enter(void);
> -
> -/*
> - * Are we sandboxed (in capability mode)?
> - * This is a libc wrapper around the cap_getmode(2) system call.
> - */
> -bool cap_sandboxed(void);
> -
> -/*
> - * cap_getmode(): Are we in capability mode?
> - */
> -int cap_getmode(u_int *modep);
> -
> -/*
> - * Limits capability rights for the given descriptor (CAP_*).
> - */
> -int cap_rights_limit(int fd, const cap_rights_t *rights);
> -/*
> - * Returns capability rights for the given descriptor.
> - */
> -#define cap_rights_get(fd, rights) __cap_rights_get(CAP_RIGHTS_VERSION, (fd), (rights))
> -int __cap_rights_get(int version, int fd, cap_rights_t *rightsp);
> -/*
> - * Limits allowed ioctls for the given descriptor.
> - */
> -int cap_ioctls_limit(int fd, const unsigned long *cmds, size_t ncmds);
> -/*
> - * Returns array of allowed ioctls for the given descriptor.
> - * If all ioctls are allowed, the cmds array is not populated and
> - * the function returns CAP_IOCTLS_ALL.
> - */
> -ssize_t cap_ioctls_get(int fd, unsigned long *cmds, size_t maxcmds);
> -/*
> - * Limits allowed fcntls for the given descriptor (CAP_FCNTL_*).
> - */
> -int cap_fcntls_limit(int fd, uint32_t fcntlrights);
> -/*
> - * Returns bitmask of allowed fcntls for the given descriptor.
> - */
> -int cap_fcntls_get(int fd, uint32_t *fcntlrightsp);
> -
> -__END_DECLS
> -
> -#endif /* !_KERNEL */
> +#include <sys/capsicum.h>
>
> #endif /* !_SYS_CAPABILITY_H_ */
>
> Copied and modified: stable/10/sys/sys/capsicum.h (from r280165, stable/10/sys/sys/capability.h)
> ==============================================================================
> --- stable/10/sys/sys/capability.h Tue Mar 17 08:42:09 2015 (r280165, copy source)
> +++ stable/10/sys/sys/capsicum.h Wed Mar 18 15:20:08 2015 (r280224)
> @@ -36,8 +36,8 @@
> /*
> * Definitions for FreeBSD capabilities facility.
> */
> -#ifndef _SYS_CAPABILITY_H_
> -#define _SYS_CAPABILITY_H_
> +#ifndef _SYS_CAPSICUM_H_
> +#define _SYS_CAPSICUM_H_
>
> #include <sys/cdefs.h>
> #include <sys/param.h>
> @@ -419,4 +419,4 @@ __END_DECLS
>
> #endif /* !_KERNEL */
>
> -#endif /* !_SYS_CAPABILITY_H_ */
> +#endif /* !_SYS_CAPSICUM_H_ */
>
>
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