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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2025 Red Hat, Inc.
* All Rights Reserved.
*/
#include "file_attr.h"
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/syscall.h>
#include <asm/types.h>
#include <fcntl.h>
static void
file_attr_to_fsxattr(
const struct file_attr *fa,
struct fsxattr *fsxa)
{
memset(fsxa, 0, sizeof(struct fsxattr));
fsxa->fsx_xflags = fa->fa_xflags;
fsxa->fsx_extsize = fa->fa_extsize;
fsxa->fsx_nextents = fa->fa_nextents;
fsxa->fsx_projid = fa->fa_projid;
fsxa->fsx_cowextsize = fa->fa_cowextsize;
}
static void
fsxattr_to_file_attr(
const struct fsxattr *fsxa,
struct file_attr *fa)
{
memset(fa, 0, sizeof(struct file_attr));
fa->fa_xflags = fsxa->fsx_xflags;
fa->fa_extsize = fsxa->fsx_extsize;
fa->fa_nextents = fsxa->fsx_nextents;
fa->fa_projid = fsxa->fsx_projid;
fa->fa_cowextsize = fsxa->fsx_cowextsize;
}
int
xfrog_file_getattr(
const int dfd,
const char *path,
const struct stat *stat,
struct file_attr *fa,
const unsigned int at_flags)
{
int error;
int fd;
struct fsxattr fsxa;
#ifdef HAVE_FILE_GETATTR
error = syscall(__NR_file_getattr, dfd, path, fa,
sizeof(struct file_attr), at_flags);
if (error && errno != ENOSYS)
return error;
if (!error)
return error;
#endif
if (SPECIAL_FILE(stat->st_mode)) {
errno = EOPNOTSUPP;
return -1;
}
fd = open(path, O_RDONLY|O_NOCTTY);
if (fd == -1)
return fd;
error = ioctl(fd, FS_IOC_FSGETXATTR, &fsxa);
close(fd);
if (error)
return error;
fsxattr_to_file_attr(&fsxa, fa);
return error;
}
int
xfrog_file_setattr(
const int dfd,
const char *path,
const mode_t mode,
struct file_attr *fa,
const unsigned int at_flags)
{
int error;
int fd;
struct fsxattr fsxa;
#ifdef HAVE_FILE_GETATTR /* file_get/setattr goes together */
error = syscall(__NR_file_setattr, dfd, path, fa,
sizeof(struct file_attr), at_flags);
if (error && errno != ENOSYS)
return error;
if (!error)
return error;
#endif
if (SPECIAL_FILE(mode)) {
errno = EOPNOTSUPP;
return -1;
}
fd = open(path, O_RDONLY|O_NOCTTY);
if (fd == -1)
return fd;
file_attr_to_fsxattr(fa, &fsxa);
error = ioctl(fd, FS_IOC_FSSETXATTR, &fsxa);
close(fd);
return error;
}
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