slstatus

My fork of https://tools.suckless.org/slstatus/
git clone https://git.inz.fi/slstatus
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commit c60af317f3cb49381258c2480636a7b390b9ff3b
parent 59ed3b6d8d594e00d72ecd3beadb512f797146ee
Author: Jody Leonard <me@jodyleonard.com>
Date:   Fri, 14 Oct 2016 05:44:46 -0400

Add functions for measuring swap

Diffstat:
Mslstatus.c | 128+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 128 insertions(+), 0 deletions(-)

diff --git a/slstatus.c b/slstatus.c @@ -57,6 +57,10 @@ static char *ram_perc(void); static char *ram_used(void); static char *ram_total(void); static char *run_command(const char *cmd); +static char *swap_free(void); +static char *swap_perc(void); +static char *swap_used(void); +static char *swap_total(void); static char *temp(const char *file); static char *uid(void); static char *uptime(void); @@ -418,6 +422,130 @@ run_command(const char *cmd) } static char * +swap_free(void) +{ + long free; + FILE *fp; + char buf[2048]; + size_t bytes_read; + char *match; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return smprintf(UNKNOWN_STR); + } + bytes_read = fread(buf, sizeof(char), sizeof(buf), fp); + buf[bytes_read] = '\0'; + fclose(fp); + if (bytes_read == 0 || bytes_read == sizeof(buf)) { + warn("Failed to read /proc/meminfo\n"); + return smprintf(UNKNOWN_STR); + } + + match = strstr(buf, "SwapFree"); + sscanf(match, "SwapFree: %ld kB\n", &free); + + return smprintf("%f", (float)free / 1024 / 1024); +} + +static char * +swap_perc(void) +{ + long total, free, cached; + FILE *fp; + char buf[2048]; + size_t bytes_read; + char *match; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return smprintf(UNKNOWN_STR); + } + bytes_read = fread(buf, sizeof(char), sizeof(buf), fp); + buf[bytes_read] = '\0'; + fclose(fp); + if (bytes_read == 0 || bytes_read == sizeof(buf)) { + warn("Failed to read /proc/meminfo\n"); + return smprintf(UNKNOWN_STR); + } + + match = strstr(buf, "SwapCached"); + sscanf(match, "SwapCached: %ld kB\n", &cached); + + match = strstr(buf, "SwapTotal"); + sscanf(match, "SwapTotal: %ld kB\n", &total); + + match = strstr(buf, "SwapFree"); + sscanf(match, "SwapFree: %ld kB\n", &free); + + return smprintf("%d%%", 100 * (total - free - cached) / total); +} + +static char * +swap_total(void) +{ + long total; + FILE *fp; + char buf[2048]; + size_t bytes_read; + char *match; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return smprintf(UNKNOWN_STR); + } + bytes_read = fread(buf, sizeof(char), sizeof(buf), fp); + buf[bytes_read] = '\0'; + fclose(fp); + if (bytes_read == 0 || bytes_read == sizeof(buf)) { + warn("Failed to read /proc/meminfo\n"); + return smprintf(UNKNOWN_STR); + } + + match = strstr(buf, "SwapTotal"); + sscanf(match, "SwapTotal: %ld kB\n", &total); + + return smprintf("%f", (float)total / 1024 / 1024); +} + +static char * +swap_used(void) +{ + long total, free, cached; + FILE *fp; + char buf[2048]; + size_t bytes_read; + char *match; + + fp = fopen("/proc/meminfo", "r"); + if (fp == NULL) { + warn("Failed to open file /proc/meminfo"); + return smprintf(UNKNOWN_STR); + } + bytes_read = fread(buf, sizeof(char), sizeof(buf), fp); + buf[bytes_read] = '\0'; + fclose(fp); + if (bytes_read == 0 || bytes_read == sizeof(buf)) { + warn("Failed to read /proc/meminfo\n"); + return smprintf(UNKNOWN_STR); + } + + match = strstr(buf, "SwapCached"); + sscanf(match, "SwapCached: %ld kB\n", &cached); + + match = strstr(buf, "SwapTotal"); + sscanf(match, "SwapTotal: %ld kB\n", &total); + + match = strstr(buf, "SwapFree"); + sscanf(match, "SwapFree: %ld kB\n", &free); + + return smprintf("%f", (float)(total - free - cached) / 1024 / 1024); +} + +static char * temp(const char *file) { int temp;