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

zdev: Add support for reading firmware configuration files

Browse Source 
Add support for reading firmware-provided I/O configuration data files.
Such configuration files are generated by the Dynamic Partition Manager
and made available via a kernel interface for consumption by Linux.

To read a firmware configuration file, use the existing --import option:

 # chzdev --import /sys/firmware/sclp_sd/config/data

This will apply all I/O configuration data found in the specified file
to the persistent configuration.

Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Peter Oberparleiter
2017-09-01 11:05:52 +02:00
committed by Jan Höppner
parent ab4445c261
commit 7d355b0fec
5 changed files with 730 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
zdev/src/chzdev.c
View File

@@ -27,6 +27,7 @@
#include "devnode.h"
#include "devtype.h"
#include "export.h"
#include "firmware.h"
#include "inuse.h"
#include "misc.h"
#include "module.h"
@@ -2500,9 +2501,9 @@ static exit_code_t do_export(struct options *opts)
/* Open output stream. */
if (strcmp(opts->export, "-") == 0) {
fd = stdout;
info("Exporting configuration data to standard output\n");
info("Exporting data to standard output\n");
} else {
info("Exporting configuration data to %s\n", opts->export);
info("Exporting data to %s\n", opts->export);
if (!util_path_exists(opts->export)) {
rc = path_create(opts->export);
if (rc)
@@ -2735,6 +2736,7 @@ static exit_code_t do_import(struct options *opts)
exit_code_t drc = EXIT_OK;
const char *filename;
int found;
bool is_firmware;
/* Open input stream. */
if (strcmp(opts->import, "-") == 0) {
@@ -2744,16 +2746,23 @@ static exit_code_t do_import(struct options *opts)
fd = fopen(opts->import, "r");
filename = opts->import;
}
info("Importing configuration data from %s\n", filename);
if (!fd) {
error("Could not open file %s: %s\n", opts->import,
strerror(errno));
return EXIT_RUNTIME_ERROR;
}
is_firmware = firmware_detect(fd);
info("Importing data from %s%s\n", filename,
is_firmware ? " (firmware format)" : "");
/* Read data. */
objects = ptrlist_new();
rc = export_read(fd, filename, objects);
if (is_firmware)
rc = firmware_read(fd, filename, -1, opts->config, objects);
else
rc = export_read(fd, filename, objects);
if (rc)
goto out;
@@ -2766,8 +2775,8 @@ static exit_code_t do_import(struct options *opts)
"selection\n", filename);
rc = EXIT_EMPTY_SELECTION;
} else {
error("%s: No settings found to import\n", filename);
rc = EXIT_NO_DATA;
info("%s: No settings found to import\n", filename);
rc = EXIT_OK;
}
goto out;
}