mirrors/scoutfs
1
0
Fork 0
mirror of https://github.com/versity/scoutfs.git synced 2026-09-05 23:56:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

scoutfs-utils: add setattr more command

Browse Source 
Add a command that wraps the setattr_more ioctl.

Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2019-05-30 13:45:57 -07:00
committed by Zach Brown
parent ffe15c2d82
commit 336a6a155d
2 changed files with 126 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
utils/src/ioctl.h
+18
View File
@@ -253,4 +253,22 @@ struct scoutfs_ioctl_data_waiting {
#define SCOUTFS_IOC_DATA_WAITING _IOW(SCOUTFS_IOCTL_MAGIC, 9, \
struct scoutfs_ioctl_data_waiting)
/*
* If i_size is set then data_version must be non-zero. If the offline
* flag is set then i_size must be set and a offline extent will be
* created from offset 0 to i_size.
*/
struct scoutfs_ioctl_setattr_more {
__u64 data_version;
__u64 i_size;
__u64 flags;
struct scoutfs_timespec ctime;
} __packed;
#define SCOUTFS_IOC_SETATTR_MORE_OFFLINE (1 << 0)
#define SCOUTFS_IOC_SETATTR_MORE_UNKNOWN (U8_MAX << 1)
#define SCOUTFS_IOC_SETATTR_MORE _IOW(SCOUTFS_IOCTL_MAGIC, 10, \
struct scoutfs_ioctl_setattr_more)
#endif
utils/src/setattr.c
+108
View File
@@ -0,0 +1,108 @@
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <getopt.h>
#include <assert.h>
#include "sparse.h"
#include "util.h"
#include "format.h"
#include "ioctl.h"
#include "parse.h"
#include "cmd.h"
static struct option long_ops[] = {
{ "ctime", 1, NULL, 'c' },
{ "data_version", 1, NULL, 'd' },
{ "file", 1, NULL, 'f' },
{ "offline", 0, NULL, 'o' },
{ "i_size", 1, NULL, 's' },
{ NULL, 0, NULL, 0}
};
static int setattr_more_cmd(int argc, char **argv)
{
struct scoutfs_ioctl_setattr_more sm;
char *path = NULL;
int ret;
int fd = -1;
int c;
memset(&sm, 0, sizeof(sm));
while ((c = getopt_long(argc, argv, "c:d:f:os:", long_ops, NULL)) != -1) {
switch (c) {
case 'c':
ret = parse_timespec(optarg, &sm.ctime);
if (ret)
goto out;
break;
case 'd':
ret = parse_u64(optarg, &sm.data_version);
if (ret)
goto out;
break;
case 'f':
path = strdup(optarg);
if (!path) {
fprintf(stderr, "path mem alloc failed\n");
ret = -ENOMEM;
goto out;
}
break;
case 'o':
sm.flags |= SCOUTFS_IOC_SETATTR_MORE_OFFLINE;
break;
case 's':
ret = parse_u64(optarg, &sm.i_size);
if (ret)
goto out;
break;
case '?':
default:
ret = -EINVAL;
goto out;
}
}
if (path == NULL) {
fprintf(stderr, "must specify -f path to file\n");
ret = -EINVAL;
goto out;
}
fd = open(path, O_WRONLY);
if (fd < 0) {
ret = -errno;
fprintf(stderr, "failed to open '%s': %s (%d)\n",
path, strerror(errno), errno);
goto out;
}
ret = ioctl(fd, SCOUTFS_IOC_SETATTR_MORE, &sm);
if (ret < 0) {
ret = -errno;
fprintf(stderr, "setattr_more ioctl failed on '%s': "
"%s (%d)\n", path, strerror(errno), errno);
goto out;
}
ret = 0;
out:
if (fd >= 0)
close(fd);
return ret;
}
static void __attribute__((constructor)) setattr_more_ctor(void)
{
cmd_register("setattr", "-c ctime -d data_version -o -s i_size -f <path>",
"set attributes on file with no data",
setattr_more_cmd);
}