kata-containers/s390-tools
1
0
Fork 0
mirror of https://github.com/ibm-s390-linux/s390-tools.git synced 2026-08-05 02:14:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

libdasd: Provide function to utilise release space ioctl

Browse Source 
The BIODASDRAS (Release Allocated Space) ioctl allows to release
track-wise or full space of an Extent Space Efficient DASD volume.

Provide a library function to utilise this functionality.

Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Jan Höppner
2019-03-05 15:32:51 +01:00
parent 8023a72b11
commit 96f13ead2b
2 changed files with 24 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libdasd/dasd_ioctl.c
+20
View File
@@ -228,6 +228,26 @@ int dasd_check_format(const char *device, format_check_t *p)
return 0;
}
/*
* Release Allocated Space
*
* @param[in] fd device node's file descriptor
* @param[in] r format options
*
* @retval 0 in case of success
* @retval errno in case of failure
*/
int dasd_release_space(const char *device, format_data_t *r)
{
int fd;
fd = dasd_open_device(device, O_RDONLY);
RUN_IOCTL(fd, BIODASDRAS, r);
dasd_close_device(fd);
return 0;
}
/*
* Reread partition table
*