mirror of
https://github.com/ibm-s390-linux/s390-tools.git
synced 2026-08-05 02:14:52 +00:00
221e74c27c
With gcc 7 we get warnings like the following:
fdasd.c: In function 'main':
fdasd.c:3055:4: warning: this statement may fall through
[-Wimplicit-fallthrough=]
fdasd_exit(&anchor, 0);
^~~~~~~~~~~~~~~~~~~~~~
fdasd.c:3056:3: note: here
default:
^~~~~~~
Fix this by marking functions with "__noreturn" to help gcc.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
128 lines
3.0 KiB
C
128 lines
3.0 KiB
C
/*
|
|
* ipl_tools - Linux for System z reipl and shutdown tools
|
|
*
|
|
* Command: lsshut
|
|
*
|
|
* Copyright IBM Corp. 2008, 2017
|
|
*
|
|
* s390-tools is free software; you can redistribute it and/or modify
|
|
* it under the terms of the MIT license. See LICENSE for details.
|
|
*/
|
|
|
|
#include "ipl_tools.h"
|
|
|
|
static const char *const usage_lsshut =
|
|
"Usage: %s [OPTIONS]\n"
|
|
"\n"
|
|
"Print the shutdown action configuration for Linux on System z.\n"
|
|
"\n"
|
|
"OPTIONS:\n"
|
|
" -h, --help Print this help, then exit\n"
|
|
" -v, --version Print version information, then exit\n";
|
|
|
|
static __noreturn void print_usage_lsshut_exit(void)
|
|
{
|
|
printf(usage_lsshut, g.prog_name);
|
|
exit(0);
|
|
}
|
|
|
|
static void parse_lsshut_options(int argc, char *argv[])
|
|
{
|
|
|
|
int opt, idx;
|
|
const struct option long_opts[] = {
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{ "version", no_argument, NULL, 'v' },
|
|
{ NULL, 0, NULL, 0 }
|
|
};
|
|
|
|
while ((opt = getopt_long(argc, argv, "hv", long_opts, &idx)) != -1) {
|
|
switch (opt) {
|
|
case 'h':
|
|
print_usage_lsshut_exit();
|
|
case 'v':
|
|
print_version_exit();
|
|
default:
|
|
print_help_hint_exit();
|
|
}
|
|
}
|
|
/* don't run with too many arguments */
|
|
if (optind != argc)
|
|
ERR_EXIT("Invalid positional parameter \"%s\" specified",
|
|
argv[optind]);
|
|
}
|
|
|
|
/*
|
|
* VMCMDs can have up to 128 characters. Newlines mark the end of a CP command.
|
|
* Therefore we can have up to 64 single CP commands (with one character).
|
|
* With quotes (2) and commas (1) we can have at most 4 * 64 = 256 characters
|
|
* for the output string.
|
|
*/
|
|
static void read_vmcmd(char *str, const char *path)
|
|
{
|
|
char buf[128], tmp[512];
|
|
char *ptr_old, *ptr;
|
|
|
|
*str = 0;
|
|
ptr_old = ptr = buf;
|
|
read_fw_str(buf, path, sizeof(buf));
|
|
while ((ptr = strchr(ptr_old, '\n'))) {
|
|
*ptr = 0;
|
|
sprintf(tmp, "\"%s\",", ptr_old);
|
|
strcat(str, tmp);
|
|
ptr_old = ptr + 1;
|
|
}
|
|
sprintf(tmp, "\"%s\"", ptr_old);
|
|
strcat(str, tmp);
|
|
}
|
|
|
|
static void print_kdump(void)
|
|
{
|
|
struct stat sb;
|
|
char tmp[1024];
|
|
|
|
if (stat("/sys/kernel/kexec_crash_loaded", &sb) != 0)
|
|
return;
|
|
read_str(tmp, "/sys/kernel/kexec_crash_loaded", sizeof(tmp));
|
|
if (strncmp(tmp, "1", 1) == 0)
|
|
printf("kdump,");
|
|
}
|
|
|
|
static void shutdown_trigger_print(struct shutdown_trigger *trigger)
|
|
{
|
|
char tmp[1024], cmd[1024], path[PATH_MAX];
|
|
|
|
sprintf(path, "shutdown_actions/%s", trigger->name_sysfs);
|
|
|
|
printf("%-16s ", trigger->name_print);
|
|
|
|
if ((trigger == &shutdown_trigger_panic ||
|
|
trigger == &shutdown_trigger_restart))
|
|
print_kdump();
|
|
read_fw_str(tmp, path, sizeof(tmp));
|
|
if (strncmp(tmp, "vmcmd", strlen("vmcmd")) == 0) {
|
|
sprintf(path, "vmcmd/%s", trigger->name_sysfs);
|
|
read_vmcmd(cmd, path);
|
|
printf("vmcmd (%s)\n", cmd);
|
|
} else {
|
|
printf("%s\n", tmp);
|
|
}
|
|
}
|
|
|
|
void cmd_lsshut(int argc, char *argv[])
|
|
{
|
|
int i;
|
|
|
|
parse_lsshut_options(argc, argv);
|
|
shutdown_init();
|
|
|
|
printf("Trigger Action\n");
|
|
printf("========================\n");
|
|
|
|
for (i = 0; shutdown_trigger_vec[i]; i++) {
|
|
if (!shutdown_trigger_vec[i]->available)
|
|
continue;
|
|
shutdown_trigger_print(shutdown_trigger_vec[i]);
|
|
}
|
|
}
|