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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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764a5c6b1f
Change the list operation to only return whether or not an attribute should be listed. Copying the attribute names into the buffer is moved to the callers. Since the result only depends on the dentry and not on the attribute name, we do not pass the attribute name to list operations. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
#include "reiserfs.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 "xattr.h"
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#include <linux/uaccess.h>
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static int
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trusted_get(const struct xattr_handler *handler, struct dentry *dentry,
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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 (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(d_inode(dentry)))
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return -EPERM;
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return reiserfs_xattr_get(d_inode(dentry), name, buffer, size);
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}
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static int
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trusted_set(const struct xattr_handler *handler, struct dentry *dentry,
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const char *name, const void *buffer, 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 (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(d_inode(dentry)))
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return -EPERM;
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return reiserfs_xattr_set(d_inode(dentry), name, buffer, size, flags);
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}
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static bool trusted_list(struct dentry *dentry)
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{
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return capable(CAP_SYS_ADMIN) && !IS_PRIVATE(d_inode(dentry));
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}
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const struct xattr_handler reiserfs_xattr_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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.list = trusted_list,
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};
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