mirror of
https://github.com/ibm-s390-linux/s390-tools.git
synced 2026-08-05 02:14:52 +00:00
b627b8d8e1
This commit is based on the s390-tools-1.39.0 version. Changes on top of s390-tools-1.39.0: - Add MIT license to all source files - Add LICENSE file - Transform REAMDE to README.md (markdown) - Add AUTHORS.md file - Add CONTRIBUTING.md file - Move changelog from README to CHANGELOG.md file Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
/**
|
|
* util_dir_example - Example program for util_dir
|
|
*
|
|
* Copyright IBM Corp. 2016, 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.
|
|
*/
|
|
|
|
//! [code]
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "lib/util_scandir.h"
|
|
|
|
/*
|
|
* Print real sysfs cpu directory contents
|
|
*/
|
|
static void show_cpu_dir(const char *sys_cpu_path)
|
|
{
|
|
char cmd_ls[256];
|
|
|
|
sprintf(cmd_ls, "ls -l %s", sys_cpu_path);
|
|
printf("$ %s\n", cmd_ls);
|
|
fflush(stdout);
|
|
if (system(cmd_ls)) {
|
|
perror("system() failed");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
/*
|
|
* Show all CPUs on Linux system
|
|
*/
|
|
int main(void)
|
|
{
|
|
struct dirent **de_vec;
|
|
int count, i;
|
|
const char *path = "/sys/devices/system/cpu";
|
|
const char *prefix = "cpu";
|
|
|
|
show_cpu_dir(path);
|
|
|
|
/*
|
|
* Process all files that match regular expression "cpu[0-9]+"
|
|
* and sort them alphabetically. Note that the regular expression
|
|
* is constructed with a variable argument list.
|
|
*/
|
|
count = util_scandir(&de_vec, alphasort, path, "%s[0-9]+", prefix);
|
|
if (count == -1) {
|
|
perror("util_dir_scan failed");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
/* Print all directories */
|
|
printf("Found cpus:\n\n");
|
|
for (i = 0; i < count; i++) {
|
|
if (de_vec[i]->d_type != DT_DIR)
|
|
continue;
|
|
printf(" - %s\n", de_vec[i]->d_name);
|
|
}
|
|
|
|
/* Free directory entries */
|
|
util_scandir_free(de_vec, count);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
//! [code]
|