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Linux 4.9: deal with demise of GROUP_AT

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Linux commit 81243eacfa40 "cred: simpler, 1D supplementary groups"
refactors the group_info struct, removing some members (which OpenAFS
references only through the GROUP_AT macro) and adding a gid member.
The GROUP_AT macro is also removed from the tree.

Add an autoconfigure test for the new group_info member gid and define a
replacement GROUP_AT macro to do the right thing under the new regime.

Change-Id: I85a52c0ae0d91fc141a523f443a4ffc05eb72a2b
Reviewed-on: https://gerrit.openafs.org/12390
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
This commit is contained in:
Mark Vitale 2016-09-14 18:01:22 -04:00 committed by Benjamin Kaduk
parent e17cd5df70
commit 8e81b182e3
2 changed files with 6 additions and 0 deletions
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1
acinclude.m4
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@ -940,6 +940,7 @@ case $AFS_SYSNAME in *_linux* | *_umlinux*)
AC_CHECK_LINUX_STRUCT([ctl_table], [ctl_name], [sysctl.h])
AC_CHECK_LINUX_STRUCT([dentry], [d_u.d_alias], [dcache.h])
AC_CHECK_LINUX_STRUCT([dentry_operations], [d_automount], [dcache.h])
AC_CHECK_LINUX_STRUCT([group_info], [gid], [cred.h])
AC_CHECK_LINUX_STRUCT([inode], [i_alloc_sem], [fs.h])
AC_CHECK_LINUX_STRUCT([inode], [i_blkbits], [fs.h])
AC_CHECK_LINUX_STRUCT([inode], [i_blksize], [fs.h])

5
src/afs/LINUX/osi_machdep.h
View File

@ -141,6 +141,11 @@ static inline long copyinstr(char *from, char *to, int count, int *length) {
#define NGROUPS NGROUPS_SMALL
#endif
#ifdef STRUCT_GROUP_INFO_HAS_GID
/* compat macro for Linux 4.9 */
#define GROUP_AT(gi,x) ((gi)->gid[x])
#endif
typedef struct task_struct afs_proc_t;
#ifdef HAVE_LINUX_KUID_T