forked from Minki/linux
6dfede6963
There are a number of helper functions for marking a reiserfs inode private that were leftover from reiserfs did its own thing wrt to private inodes. S_PRIVATE has been in the kernel for some time, so this patch removes the helpers and uses IS_PRIVATE instead. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
#include <linux/reiserfs_fs.h>
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#include <linux/capability.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/pagemap.h>
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#include <linux/xattr.h>
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#include <linux/reiserfs_xattr.h>
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#include <asm/uaccess.h>
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static int
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trusted_get(struct inode *inode, const char *name, void *buffer, size_t size)
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{
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if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX))
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return -EINVAL;
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if (!reiserfs_xattrs(inode->i_sb))
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return -EOPNOTSUPP;
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if (!(capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)))
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return -EPERM;
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return reiserfs_xattr_get(inode, name, buffer, size);
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}
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static int
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trusted_set(struct inode *inode, const char *name, const void *buffer,
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size_t size, int flags)
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{
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if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX))
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return -EINVAL;
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if (!reiserfs_xattrs(inode->i_sb))
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return -EOPNOTSUPP;
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if (!(capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)))
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return -EPERM;
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return reiserfs_xattr_set(inode, name, buffer, size, flags);
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}
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static int trusted_del(struct inode *inode, const char *name)
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{
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if (strlen(name) < sizeof(XATTR_TRUSTED_PREFIX))
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return -EINVAL;
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if (!reiserfs_xattrs(inode->i_sb))
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return -EOPNOTSUPP;
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if (!(capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)))
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return -EPERM;
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return 0;
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}
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static int
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trusted_list(struct inode *inode, const char *name, int namelen, char *out)
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{
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int len = namelen;
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if (!reiserfs_xattrs(inode->i_sb))
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return 0;
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if (!(capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode)))
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return 0;
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if (out)
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memcpy(out, name, len);
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return len;
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}
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struct reiserfs_xattr_handler trusted_handler = {
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.prefix = XATTR_TRUSTED_PREFIX,
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.get = trusted_get,
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.set = trusted_set,
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.del = trusted_del,
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.list = trusted_list,
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};
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