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libcpumf/libcpumf_cpuset: Use util_file_read_line()

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Use function util_file_read_line() to read the file contents
of sysfs file named /sys/devices/system/cpu/online.
It has only one line.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Thomas Richter
2024-12-04 11:57:56 +01:00
committed by Jan Höppner
parent 253ca8a30e
commit 931c61f141
1 changed files with 8 additions and 14 deletions
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libcpumf/libcpumf_cpuset.c
+8 -14
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@@ -5,12 +5,14 @@
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lib/libcpumf.h"
#include "lib/util_file.h"
#include "lib/util_libc.h"
int libcpumf_cpuset(const char *parm, cpu_set_t *mask)
@@ -58,19 +60,11 @@ out:
int libcpumf_cpuset_fn(const char *filename, cpu_set_t *mask)
{
char *txt = NULL;
ssize_t ret = -1;
size_t len = 0;
FILE *fp;
char txt[PATH_MAX];
int ret = util_file_read_line(txt, sizeof(txt), "%s", filename);
fp = fopen(filename, "r");
if (!fp)
return ret;
/* Read out file, one line expected */
ret = getline(&txt, &len, fp);
fclose(fp);
if (ret > 0)
if (!ret)
ret = libcpumf_cpuset(txt, mask);
free(txt);
return ret;
}