diff options
Diffstat (limited to 'fs/ocfs2/acl.c')
| -rw-r--r-- | fs/ocfs2/acl.c | 78 | 
1 files changed, 73 insertions, 5 deletions
diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index 0501974bedd..e13fc9e8fcd 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -21,6 +21,7 @@  #include <linux/init.h>  #include <linux/module.h> +#include <linux/slab.h>  #include <linux/string.h>  #define MLOG_MASK_PREFIX ML_INODE @@ -30,6 +31,8 @@  #include "alloc.h"  #include "dlmglue.h"  #include "file.h" +#include "inode.h" +#include "journal.h"  #include "ocfs2_fs.h"  #include "xattr.h" @@ -166,6 +169,60 @@ static struct posix_acl *ocfs2_get_acl(struct inode *inode, int type)  }  /* + * Helper function to set i_mode in memory and disk. Some call paths + * will not have di_bh or a journal handle to pass, in which case it + * will create it's own. + */ +static int ocfs2_acl_set_mode(struct inode *inode, struct buffer_head *di_bh, +			      handle_t *handle, umode_t new_mode) +{ +	int ret, commit_handle = 0; +	struct ocfs2_dinode *di; + +	if (di_bh == NULL) { +		ret = ocfs2_read_inode_block(inode, &di_bh); +		if (ret) { +			mlog_errno(ret); +			goto out; +		} +	} else +		get_bh(di_bh); + +	if (handle == NULL) { +		handle = ocfs2_start_trans(OCFS2_SB(inode->i_sb), +					   OCFS2_INODE_UPDATE_CREDITS); +		if (IS_ERR(handle)) { +			ret = PTR_ERR(handle); +			mlog_errno(ret); +			goto out_brelse; +		} + +		commit_handle = 1; +	} + +	di = (struct ocfs2_dinode *)di_bh->b_data; +	ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, +				      OCFS2_JOURNAL_ACCESS_WRITE); +	if (ret) { +		mlog_errno(ret); +		goto out_commit; +	} + +	inode->i_mode = new_mode; +	di->i_mode = cpu_to_le16(inode->i_mode); + +	ocfs2_journal_dirty(handle, di_bh); + +out_commit: +	if (commit_handle) +		ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle); +out_brelse: +	brelse(di_bh); +out: +	return ret; +} + +/*   * Set the access or default ACL of an inode.   */  static int ocfs2_set_acl(handle_t *handle, @@ -193,9 +250,14 @@ static int ocfs2_set_acl(handle_t *handle,  			if (ret < 0)  				return ret;  			else { -				inode->i_mode = mode;  				if (ret == 0)  					acl = NULL; + +				ret = ocfs2_acl_set_mode(inode, di_bh, +							 handle, mode); +				if (ret) +					return ret; +  			}  		}  		break; @@ -283,6 +345,7 @@ int ocfs2_init_acl(handle_t *handle,  	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);  	struct posix_acl *acl = NULL;  	int ret = 0; +	mode_t mode;  	if (!S_ISLNK(inode->i_mode)) {  		if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) { @@ -291,12 +354,17 @@ int ocfs2_init_acl(handle_t *handle,  			if (IS_ERR(acl))  				return PTR_ERR(acl);  		} -		if (!acl) -			inode->i_mode &= ~current_umask(); +		if (!acl) { +			mode = inode->i_mode & ~current_umask(); +			ret = ocfs2_acl_set_mode(inode, di_bh, handle, mode); +			if (ret) { +				mlog_errno(ret); +				goto cleanup; +			} +		}  	}  	if ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) && acl) {  		struct posix_acl *clone; -		mode_t mode;  		if (S_ISDIR(inode->i_mode)) {  			ret = ocfs2_set_acl(handle, inode, di_bh, @@ -313,7 +381,7 @@ int ocfs2_init_acl(handle_t *handle,  		mode = inode->i_mode;  		ret = posix_acl_create_masq(clone, &mode);  		if (ret >= 0) { -			inode->i_mode = mode; +			ret = ocfs2_acl_set_mode(inode, di_bh, handle, mode);  			if (ret > 0) {  				ret = ocfs2_set_acl(handle, inode,  						    di_bh, ACL_TYPE_ACCESS,  |