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tunedasd: move tunedasd ioctls to libdasd

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Move all DASD IOCTLs to libdasd and adapt all affected
users accordingly.

Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Stefan Haberland
2022-11-10 16:11:09 +01:00
committed by Jan Höppner
parent f654b971d0
commit 4e28047eb4
3 changed files with 252 additions and 218 deletions
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libdasd/dasd_ioctl.c
+129
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@@ -16,6 +16,7 @@
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include "lib/dasd_base.h"
@@ -321,3 +322,131 @@ int dasd_disk_release(const char *device)
return 0;
}
/*
* Unconditionally reserve DASD disk
*
* An existing reserve lock is lifted (steal lock) and the device
* is reserved.
*
* @param[in] device node device node's name
*
* @retval 0 in case of success
* @retval errno in case of failure
*/
int dasd_slock(const char *device)
{
int fd;
fd = dasd_open_device(device, O_RDONLY);
RUN_IOCTL(fd, BIODASDSLCK, NULL);
dasd_close_device(fd);
return 0;
}
/*
* Get the caching algorithm used for the channel programs of this device.
*
* @param[in] device node device node's name
* @param[out] attrib_data pointer to dasd attrib data with:
* 'cache' is the caching mode
* 'no_cyl' the number of cylinders to be cached.
*
* @retval 0 in case of success
* @retval errno in case of failure
*/
int dasd_get_cache(const char *device, attrib_data_t *attrib_data)
{
int fd;
fd = dasd_open_device(device, O_RDONLY);
RUN_IOCTL(fd, BIODASDGATTR, attrib_data);
dasd_close_device(fd);
return 0;
}
/*
* Set the caching algorithm used for the channel programs of this device.
*
* @param[in] device node device node's name
* @param[in] attrib_data pointer to dasd attrib data with:
* 'cache' is the caching mode
* 'no_cyl' the number of cylinders to be cached.
*
* @retval 0 in case of success
* @retval errno in case of failure
*/
int dasd_set_cache(const char *device, attrib_data_t *attrib_data)
{
int fd;
fd = dasd_open_device(device, O_RDONLY);
RUN_IOCTL(fd, BIODASDSATTR, attrib_data);
dasd_close_device(fd);
return 0;
}
/*
* Get reserve status of device.
*
* @param[in] device node device node's name
*
* @retval errno in case of failure
* @retval 0 unreserved
* @retval 1 implicit reserved
* @retval 2 other reservation
* @retval 3 reserved
*/
int dasd_query_reserve(const char *device)
{
struct dasd_snid_ioctl_data snid = { 0 };
int fd;
fd = dasd_open_device(device, O_RDONLY);
RUN_IOCTL(fd, BIODASDSNID, &snid);
dasd_close_device(fd);
return snid.data.path_state.reserve;
}
/*
* Get and print the profiling info of the device.
*
* @param[in] device node device node's name
* @param[in] dasd_profile_info pointer to dasd profile info
*
* @retval 0 in case of success
* @retval errno in case of failure
*/
int dasd_profile(const char *device, dasd_profile_info_t *dasd_profile_info)
{
int fd;
fd = dasd_open_device(device, O_RDONLY);
RUN_IOCTL(fd, BIODASDPRRD, dasd_profile_info);
dasd_close_device(fd);
return 0;
}
/*
* Reset the profiling counters of the device.
*
* @param[in] device node device node's name
*
* @retval 0 in case of success
* @retval errno in case of failure
*/
int dasd_reset_profile(const char *device)
{
int fd;
fd = dasd_open_device(device, O_RDONLY);
RUN_IOCTL(fd, BIODASDPRRST, NULL);
dasd_close_device(fd);
return 0;
}