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Format error messages properly

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Make use of strerror(errno) and format all errors equally:
function ['parameters']: error message
This commit is contained in:
Aaron Marcher
2018-03-28 19:46:27 +02:00
parent 2289798b6d
commit faa52bdcc0
15 changed files with 55 additions and 33 deletions
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17
components/swap.c
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@ -1,5 +1,6 @@
/* See LICENSE file for copyright and license details. */
#if defined(__linux__)
#include <errno.h>
#include <stdio.h>
#include <string.h>
@ -15,12 +16,12 @@ swap_free(void)
fp = fopen("/proc/meminfo", "r");
if (fp == NULL) {
fprintf(stderr, "Failed to open file /proc/meminfo");
fprintf(stderr, "fopen '/proc/meminfo': %s\n", strerror(errno));
return NULL;
}
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
fprintf(stderr, "swap_free: read error");
fprintf(stderr, "fread '/proc/meminfo': %s\n", strerror(errno));
fclose(fp);
return NULL;
}
@ -47,12 +48,12 @@ swap_perc(void)
fp = fopen("/proc/meminfo", "r");
if (fp == NULL) {
fprintf(stderr, "Failed to open file /proc/meminfo");
fprintf(stderr, "fopen '/proc/meminfo': %s\n", strerror(errno));
return NULL;
}
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
fprintf(stderr, "swap_perc: read error");
fprintf(stderr, "fread '/proc/meminfo': %s\n", strerror(errno));
fclose(fp);
return NULL;
}
@ -83,11 +84,11 @@ swap_total(void)
fp = fopen("/proc/meminfo", "r");
if (fp == NULL) {
fprintf(stderr, "Failed to open file /proc/meminfo");
fprintf(stderr, "fopen '/proc/meminfo': %s\n", strerror(errno));
return NULL;
}
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
fprintf(stderr, "swap_total: read error");
fprintf(stderr, "fread '/proc/meminfo': %s\n", strerror(errno));
fclose(fp);
return NULL;
}
@ -110,11 +111,11 @@ swap_used(void)
fp = fopen("/proc/meminfo", "r");
if (fp == NULL) {
fprintf(stderr, "Failed to open file /proc/meminfo");
fprintf(stderr, "fopen '/proc/meminfo': %s\n", strerror(errno));
return NULL;
}
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
fprintf(stderr, "swap_used: read error");
fprintf(stderr, "fread '/proc/meminfo': %s\n", strerror(errno));
fclose(fp);
return NULL;
}