68 строки
1.4 KiB
C
68 строки
1.4 KiB
C
#include <linux/reiserfs_fs.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_SECURITY_PREFIX "security."
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static int
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security_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_SECURITY_PREFIX))
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return -EINVAL;
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if (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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security_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_SECURITY_PREFIX))
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return -EINVAL;
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if (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 security_del(struct inode *inode, const char *name)
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{
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if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
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return -EINVAL;
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if (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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security_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 (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 security_handler = {
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.prefix = XATTR_SECURITY_PREFIX,
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.get = security_get,
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.set = security_set,
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.del = security_del,
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.list = security_list,
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};
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