fs/nfs/nfs4_vnops.c

880 		 * If the file has a delegation, then do an access check up
881 		 * front.  This avoids having to an access check later after
1043 			 * must fail due to an access failure
1251 		 * we are root (no root net access).  If the real uid
2987 			 * In the event that we got an access error while
3922 		 * Purge the access cache and ACL cache if changing either the
3924 		 * change the access permissions of the file, so purge old
4119 	 * This way, if we access it, then we bring it
4356 	/* access */
4358 	argop[1].nfs_argop4_u.opaccess.access = argacc;
4406 	resop = &res.array[1];	/* access res */
4408 	resacc = resop->nfs_resop4_u.opaccess.access;
5067 	 * or perform any access checks.
5084 	 * just need to check access.
5148 				 * The access cache should almost always hit
5186  * the access for VEXEC, then relookup the filename and
5193  *		cache new access
5194  *		recheck VEXEC access
5200  *		check to make sure we have access
5293 	/* 3. access directory */
5295 	argop[3].nfs_argop4_u.opaccess.access = ACCESS4_READ | ACCESS4_DELETE |
5408 		 *	purge the caches (access and indirectly dnlc if needed)
5436 		 * cache new directory access
5439 		    args.array[3].nfs_argop4_u.opaccess.access,
5440 		    res.array[3].nfs_resop4_u.opaccess.access, cr);
5443 		 * recheck VEXEC access
5600 		 * and dnlc entry, we may not have access.
5626  * changed but if it has, get new attributes and check access
5633  *		and cache new access.
5747 	/* 8. access directory */
5749 	argop[8].nfs_argop4_u.opaccess.access = ACCESS4_READ | ACCESS4_DELETE |
5899 		 *	purge the caches (access and indirectly dnlc if needed)
5920 		 * cache new directory access
5923 		    args.array[8].nfs_argop4_u.opaccess.access,
5924 		    res.array[8].nfs_resop4_u.opaccess.access, cr);
5927 		 * recheck VEXEC access
5977 		 * we may not have access.
5990 	 * We also know we have directory access.
6539 	 * All that needs to be done is access
8910 			 * access is made to it.
9937 					 * Trying to access beyond EOF,
9993 			 * read access to the buffer before copying data.
10022 				 * access to the buffer before copying data.
10140 	 * implementations may attempt a read access to the buffer before
10730 	 * mmap can't add any additional share access that isn't
10767 		 * access then we send an invalid reopen with
10768 		 * access = NONE.
10772 		 * read and write access.  A simple comparison of prot
10773 		 * to ~PROT_WRITE to determine read access is insufficient
11873  * serialize access to the commit structure in the rnode.  As long
11977  * serialize access to the commit structure in the rnode.  As long
12526 	 * Check access permissions
14357 	 *   need to swap credentials due to access error
15075  * 'access_bits' represents the access we are closing/downgrading.