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f0aca5f7bb
Linux kernel 6.3 changed a bunch of APIs to use the dedicated idmap type for mounts (struct mnt_idmap), we need to detect these changes and make zfs work with the new APIs. NOTE: This backport only includes the configure checks to detect the 6.3 idmap API changes. It does not include support for idmap. When provided the idmap variable is ignored in most case in the same way the user_ns argument was ignored. This change is solely to provide compatibility with the new interfaces. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Youzhong Yang <yyang@mathworks.com> Closes #14682
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SPL_CRED_H
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#define _SPL_CRED_H
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#include <linux/module.h>
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#include <linux/cred.h>
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#include <sys/types.h>
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#include <sys/vfs.h>
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typedef struct cred cred_t;
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#define kcred ((cred_t *)(init_task.cred))
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#define CRED() ((cred_t *)current_cred())
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/* Linux 4.9 API change, GROUP_AT was removed */
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#ifndef GROUP_AT
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#define GROUP_AT(gi, i) ((gi)->gid[i])
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#endif
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#define KUID_TO_SUID(x) (__kuid_val(x))
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#define KGID_TO_SGID(x) (__kgid_val(x))
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#define SUID_TO_KUID(x) (KUIDT_INIT(x))
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#define SGID_TO_KGID(x) (KGIDT_INIT(x))
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#define KGIDP_TO_SGIDP(x) (&(x)->val)
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extern zidmap_t *zfs_get_init_idmap(void);
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extern void crhold(cred_t *cr);
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extern void crfree(cred_t *cr);
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extern uid_t crgetuid(const cred_t *cr);
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extern uid_t crgetruid(const cred_t *cr);
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extern gid_t crgetgid(const cred_t *cr);
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extern int crgetngroups(const cred_t *cr);
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extern gid_t *crgetgroups(const cred_t *cr);
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extern int groupmember(gid_t gid, const cred_t *cr);
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#endif /* _SPL_CRED_H */
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