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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2003 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <xfs/xfs.h>
#include <xfs/jdm.h>
/* simple test program to try out a bunch of xfsctls:
* XFS_IOC_FSCOUNTS
* XFS_IOC_GET_RESBLKS
* XFS_IOC_SET_RESBLKS
* XFS_IOC_PATH_TO_FSHANDLE
* XFS_IOC_PATH_TO_HANDLE
* XFS_IOC_FD_TO_HANDLE
* XFS_IOC_OPEN_BY_HANDLE
* XFS_IOC_READLINK_BY_HANDLE
*/
void fscounts(char *fname, int fsfd)
{
xfs_fsop_counts_t counts;
int ret;
ret=xfsctl(fname, fsfd, XFS_IOC_FSCOUNTS, &counts);
if (ret) {
perror("xfsctl(XFS_IOC_FSCOUNTS)");
exit(1);
}
printf("XFS_IOC_FSCOUNTS-\n freedata: %lld freertx: %lld freeino: %lld allocino: %lld\n",
(long long)counts.freedata, (long long)counts.freertx,
(long long)counts.freeino, (long long)counts.allocino);
}
__u64 getresblks(char *fname, int fsfd)
{
xfs_fsop_resblks_t res;
int ret;
ret=xfsctl(fname, fsfd, XFS_IOC_GET_RESBLKS, &res);
if (ret) {
perror("xfsctl(XFS_IOC_GET_RESBLKS)");
exit(1);
}
printf("XFS_IOC_GET_RESBLKS-\n resblks: %lld blksavail: %lld\n",
(long long)res.resblks, (long long)res.resblks_avail);
return res.resblks;
}
__u64 setresblks(char *fname, int fsfd, __u64 blks)
{
xfs_fsop_resblks_t res;
int ret;
res.resblks=blks;
ret=xfsctl(fname, fsfd, XFS_IOC_SET_RESBLKS, &res);
if (ret) {
perror("xfsctl(XFS_IOC_SET_RESBLKS)");
exit(1);
}
printf("XFS_IOC_SET_RESBLKS-\n resblks: %lld blksavail: %lld\n",
(long long)res.resblks, (long long)res.resblks_avail);
return res.resblks;
}
void handle_print(void *handle, int handlen)
{
char *p=handle;
if (!handle||!handlen) {
printf("%s",handle?"<zero len>":"<NULL>");
return;
};
printf("#");
while (handlen--)
printf("%02x", *p++);
}
void stat_print(int fd)
{
struct stat buf;
if (fstat(fd, &buf)) {
perror("stat");
exit(1);
}
printf("dev: %llu ino: %llu mode: %o\n",
(unsigned long long)buf.st_dev, (unsigned long long)buf.st_ino, buf.st_mode);
}
void handle(char *fname, int fsfd, char *path)
{
xfs_fsop_handlereq_t handle;
char buffer[1024];
char link[1024];
int ret;
__u32 len;
__u32 linklen;
int fd;
handle.path=path;
handle.ohandle=buffer;
handle.ohandlen=&len;
ret=xfsctl(fname, fsfd, XFS_IOC_PATH_TO_FSHANDLE, &handle);
if (ret) {
perror("xfsctl(XFS_IOC_PATH_TO_FSHANDLE)");
exit(1);
}
printf("XFS_IOC_PATH_TO_FSHANDLE-\n handle: ");
handle_print(handle.ohandle, *handle.ohandlen);
printf("\n");
fd=open(path,O_RDONLY);
if (fd<0) {
perror("open");
exit(1);
}
handle.path=NULL;
handle.fd=fd;
handle.ohandle=buffer;
handle.ohandlen=&len;
ret=xfsctl(fname, fsfd, XFS_IOC_FD_TO_HANDLE, &handle);
if (ret) {
perror("ioctl(XFS_IOC_FD_TO_HANDLE)");
exit(1);
}
printf("XFS_IOC_FD_TO_HANDLE-\n path: %s\n handle: ", path);
handle_print(handle.ohandle, *handle.ohandlen);
printf("\n");
close(fd);
handle.path=NULL;
handle.fd=-1;
handle.ihandle=buffer;
handle.ihandlen=len;
handle.ohandle=NULL;
handle.ohandlen=NULL;
ret=xfsctl(fname, fsfd, XFS_IOC_OPEN_BY_HANDLE, &handle);
if (ret<0) {
perror("xfsctl(XFS_IOC_OPEN_BY_HANDLE)");
exit(1);
}
printf("XFS_IOC_OPEN_BY_HANDLE-\n handle: ");
handle_print(handle.ihandle, handle.ihandlen);
printf("\n fd: %d\n stat- ", ret);
stat_print(ret);
close(ret);
handle.path=path;
handle.ohandle=buffer;
handle.ohandlen=&len;
ret=xfsctl(fname, fsfd, XFS_IOC_PATH_TO_HANDLE, &handle);
if (ret) {
perror("xfsctl(XFS_IOC_PATH_TO_HANDLE)");
exit(1);
}
printf("XFS_IOC_PATH_TO_HANDLE-\n path: %s\n handle: ", path);
handle_print(handle.ohandle, *handle.ohandlen);
printf("\n");
handle.path=NULL;
handle.fd=-1;
handle.ihandle=buffer;
handle.ihandlen=len;
handle.ohandle=link;
linklen=sizeof(link);
handle.ohandlen=&linklen;
ret=xfsctl(fname, fsfd, XFS_IOC_READLINK_BY_HANDLE, &handle);
if (ret<0) {
perror("xfsctl(XFS_IOC_READLINK_BY_HANDLE)");
fprintf(stderr,"ERROR IGNORED\n");
} else {
printf("XFS_IOC_READLINK_BY_HANDLE-\n handle: ");
handle_print(handle.ihandle, handle.ihandlen);
printf("\n link=\"%*.*s\"\n",
ret, ret, (char*)handle.ohandle);
}
}
int
main(int argc, char **argv)
{
int fsfd;
if (argc != 3) {
fprintf(stderr,"usage: %s <filesystem> <file/link in FS>\n",
argv[0]);
exit(0);
}
fsfd = open(argv[1], O_RDONLY);
if (fsfd < 0) {
perror("open");
exit(1);
}
/* XFS_IOC_FSCOUNTS */
fscounts(argv[0], fsfd);
/* XFS_IOC_GET_RESBLKS & XFS_IOC_SET_RESBLKS */
getresblks(argv[0], fsfd);
setresblks(argv[0], fsfd, 1000);
getresblks(argv[0], fsfd);
setresblks(argv[0], fsfd, 0);
/* TODO - XFS_IOC_FSINUMBERS */
/* XFS_IOC_PATH_TO_FSHANDLE */
/* XFS_IOC_PATH_TO_HANDLE */
/* XFS_IOC_FD_TO_HANDLE */
/* XFS_IOC_OPEN_BY_HANDLE */
/* XFS_IOC_READLINK_BY_HANDLE */
handle(argv[0], fsfd, argv[2]);
return 0;
}
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