[dpdk-dev] [RFC v3 4/6] eal: add a helper for reading string from sysfs
Stephen Hemminger
stephen at networkplumber.org
Tue Jun 1 07:37:43 CEST 2021
On Tue, 1 Jun 2021 11:06:42 +0800
Chenbo Xia <chenbo.xia at intel.com> wrote:
> +int
> +rte_eal_parse_sysfs_str(const char *filename, char *buf, unsigned long sz)
> +{
> + FILE *f;
> +
> + f = fopen(filename, "r");
> + if (f == NULL) {
> + RTE_LOG(ERR, EAL, "%s(): cannot open sysfs file %s\n",
> + __func__, filename);
> + return -1;
> + }
> +
> + if (fgets(buf, sz, f) == NULL) {
> + RTE_LOG(ERR, EAL, "%s(): cannot read sysfs file %s\n",
> + __func__, filename);
> + fclose(f);
> + return -1;
> + }
> +
> + fclose(f);
> + return 0;
> +}
It would be helpful if function removed trailing newline.
strchrnul(buf, '\n') = '\0';
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