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[/] [test_project/] [trunk/] [linux_sd_driver/] [fs/] [reiserfs/] [xattr_trusted.c] - Blame information for rev 62

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Line No. Rev Author Line
1 62 marcus.erl
#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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#define XATTR_TRUSTED_PREFIX "trusted."
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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_reiserfs_priv_object(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_reiserfs_priv_object(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_reiserfs_priv_object(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_reiserfs_priv_object(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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