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Support immutable, and other attributes. Some renaming and other minor fixes done by myself. Signed-off-by: Herbert Poetzl <herbert@13thfloor.at> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Herbert Poetzl
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Mark Fasheh
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Sep 20, 2006
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -16,6 +16,7 @@ ocfs2-objs := \ | |
| file.o \ | ||
| heartbeat.o \ | ||
| inode.o \ | ||
| ioctl.o \ | ||
| journal.o \ | ||
| localalloc.o \ | ||
| mmap.o \ | ||
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|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| /* | ||
| * linux/fs/ocfs2/ioctl.c | ||
| * | ||
| * Copyright (C) 2006 Herbert Poetzl | ||
| * adapted from Remy Card's ext2/ioctl.c | ||
| */ | ||
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| #include <linux/fs.h> | ||
| #include <linux/mount.h> | ||
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| #define MLOG_MASK_PREFIX ML_INODE | ||
| #include <cluster/masklog.h> | ||
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| #include "ocfs2.h" | ||
| #include "alloc.h" | ||
| #include "dlmglue.h" | ||
| #include "inode.h" | ||
| #include "journal.h" | ||
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| #include "ocfs2_fs.h" | ||
| #include <linux/ext2_fs.h> | ||
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| static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags) | ||
| { | ||
| int status; | ||
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| status = ocfs2_meta_lock(inode, NULL, NULL, 0); | ||
| if (status < 0) { | ||
| mlog_errno(status); | ||
| return status; | ||
| } | ||
| *flags = OCFS2_I(inode)->ip_attr; | ||
| ocfs2_meta_unlock(inode, 0); | ||
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| mlog_exit(status); | ||
| return status; | ||
| } | ||
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| static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags, | ||
| unsigned mask) | ||
| { | ||
| struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode); | ||
| struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | ||
| struct ocfs2_journal_handle *handle = NULL; | ||
| struct buffer_head *bh = NULL; | ||
| unsigned oldflags; | ||
| int status; | ||
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| mutex_lock(&inode->i_mutex); | ||
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| status = ocfs2_meta_lock(inode, NULL, &bh, 1); | ||
| if (status < 0) { | ||
| mlog_errno(status); | ||
| goto bail; | ||
| } | ||
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| status = -EROFS; | ||
| if (IS_RDONLY(inode)) | ||
| goto bail_unlock; | ||
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| status = -EACCES; | ||
| if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER)) | ||
| goto bail_unlock; | ||
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| if (!S_ISDIR(inode->i_mode)) | ||
| flags &= ~OCFS2_DIRSYNC_FL; | ||
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| handle = ocfs2_start_trans(osb, NULL, OCFS2_INODE_UPDATE_CREDITS); | ||
| if (IS_ERR(handle)) { | ||
| status = PTR_ERR(handle); | ||
| mlog_errno(status); | ||
| goto bail_unlock; | ||
| } | ||
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| oldflags = ocfs2_inode->ip_attr; | ||
| flags = flags & mask; | ||
| flags |= oldflags & ~mask; | ||
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| /* | ||
| * The IMMUTABLE and APPEND_ONLY flags can only be changed by | ||
| * the relevant capability. | ||
| */ | ||
| status = -EPERM; | ||
| if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) & | ||
| (OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) { | ||
| if (!capable(CAP_LINUX_IMMUTABLE)) | ||
| goto bail_unlock; | ||
| } | ||
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| ocfs2_inode->ip_attr = flags; | ||
| ocfs2_set_inode_flags(inode); | ||
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| status = ocfs2_mark_inode_dirty(handle, inode, bh); | ||
| if (status < 0) | ||
| mlog_errno(status); | ||
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| ocfs2_commit_trans(handle); | ||
| bail_unlock: | ||
| ocfs2_meta_unlock(inode, 1); | ||
| bail: | ||
| mutex_unlock(&inode->i_mutex); | ||
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| if (bh) | ||
| brelse(bh); | ||
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| mlog_exit(status); | ||
| return status; | ||
| } | ||
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| int ocfs2_ioctl(struct inode * inode, struct file * filp, | ||
| unsigned int cmd, unsigned long arg) | ||
| { | ||
| unsigned int flags; | ||
| int status; | ||
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| switch (cmd) { | ||
| case OCFS2_IOC_GETFLAGS: | ||
| status = ocfs2_get_inode_attr(inode, &flags); | ||
| if (status < 0) | ||
| return status; | ||
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| flags &= OCFS2_FL_VISIBLE; | ||
| return put_user(flags, (int __user *) arg); | ||
| case OCFS2_IOC_SETFLAGS: | ||
| if (get_user(flags, (int __user *) arg)) | ||
| return -EFAULT; | ||
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| return ocfs2_set_inode_attr(inode, flags, | ||
| OCFS2_FL_MODIFIABLE); | ||
| default: | ||
| return -ENOTTY; | ||
| } | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| /* | ||
| * ioctl.h | ||
| * | ||
| * Function prototypes | ||
| * | ||
| * Copyright (C) 2006 Herbert Poetzl | ||
| * | ||
| */ | ||
|
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| #ifndef OCFS2_IOCTL_H | ||
| #define OCFS2_IOCTL_H | ||
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| int ocfs2_ioctl(struct inode * inode, struct file * filp, | ||
| unsigned int cmd, unsigned long arg); | ||
|
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| #endif /* OCFS2_IOCTL_H */ |
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