diff options
| -rw-r--r-- | Makefile | 53 | ||||
| -rw-r--r-- | arg.h | 33 | ||||
| -rw-r--r-- | components/datetime.c | 20 | ||||
| -rw-r--r-- | components/netspeeds.c | 74 | ||||
| -rw-r--r-- | components/ram.c | 89 | ||||
| -rw-r--r-- | components/run_command.c | 31 | ||||
| -rw-r--r-- | components/volume | 4 | ||||
| -rw-r--r-- | config.h | 21 | ||||
| -rw-r--r-- | config.mk | 22 | ||||
| -rw-r--r-- | slstatus.1 | 45 | ||||
| -rw-r--r-- | slstatus.c | 132 | ||||
| -rw-r--r-- | slstatus.h | 16 | ||||
| -rw-r--r-- | util.c | 141 | ||||
| -rw-r--r-- | util.h | 16 |
14 files changed, 697 insertions, 0 deletions
diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..ef103c5 --- /dev/null +++ b/Makefile @@ -0,0 +1,53 @@ +# See LICENSE file for copyright and license details +# slstatus - suckless status monitor +.POSIX: + +include config.mk + +REQ = util +COM =\ + components/datetime\ + components/netspeeds\ + components/ram\ + components/run_command\ + +all: slstatus + +$(COM:=.o): config.mk $(REQ:=.h) slstatus.h +slstatus.o: slstatus.c slstatus.h arg.h config.h config.mk $(REQ:=.h) + +.c.o: + $(CC) -o $@ -c $(CPPFLAGS) $(CFLAGS) $< + +config.h: + cp config.def.h $@ + +slstatus: slstatus.o $(COM:=.o) $(REQ:=.o) + $(CC) -o $@ $(LDFLAGS) $(COM:=.o) $(REQ:=.o) slstatus.o $(LDLIBS) + +clean: + rm -f slstatus slstatus.o $(COM:=.o) $(REQ:=.o) + +dist: + rm -rf "slstatus-$(VERSION)" + mkdir -p "slstatus-$(VERSION)/components" + cp -R LICENSE Makefile README config.mk config.def.h \ + arg.h slstatus.c $(COM:=.c) $(REQ:=.c) $(REQ:=.h) \ + slstatus.1 "slstatus-$(VERSION)" + tar -cf - "slstatus-$(VERSION)" | gzip -c > "slstatus-$(VERSION).tar.gz" + rm -rf "slstatus-$(VERSION)" + +install: all + mkdir -p "$(DESTDIR)$(PREFIX)/bin" + cp -f slstatus "$(DESTDIR)$(PREFIX)/bin" + chmod 755 "$(DESTDIR)$(PREFIX)/bin/slstatus" + mkdir -p "$(DESTDIR)$(MANPREFIX)/man1" + cp -f slstatus.1 "$(DESTDIR)$(MANPREFIX)/man1" + chmod 644 "$(DESTDIR)$(MANPREFIX)/man1/slstatus.1" + cp -f components/volume "$(DESTDIR)$(PREFIX)/bin" + chmod 775 "$(DESTDIR)$(PREFIX)/bin/volume" + +uninstall: + rm -f "$(DESTDIR)$(PREFIX)/bin/slstatus" + rm -f "$(DESTDIR)$(MANPREFIX)/man1/slstatus.1" + rm -f "$(DESTDIR)$(PREFIX)/bin/volume" @@ -0,0 +1,33 @@ +/* See LICENSE file for copyright and license details. */ +#ifndef ARG_H +#define ARG_H + +extern char *argv0; + +/* int main(int argc, char *argv[]) */ +#define ARGBEGIN for (argv0 = *argv, *argv ? (argc--, argv++) : ((void *)0); \ + *argv && (*argv)[0] == '-' && (*argv)[1]; argc--, argv++) { \ + int i_, argused_; \ + if ((*argv)[1] == '-' && !(*argv)[2]) { \ + argc--, argv++; \ + break; \ + } \ + for (i_ = 1, argused_ = 0; (*argv)[i_]; i_++) { \ + switch ((*argv)[i_]) +#define ARGEND if (argused_) { \ + if ((*argv)[i_ + 1]) { \ + break; \ + } else { \ + argc--, argv++; \ + break; \ + } \ + } \ + } \ + } +#define ARGC() ((*argv)[i_]) +#define ARGF_(x) (((*argv)[i_ + 1]) ? (argused_ = 1, &((*argv)[i_ + 1])) : \ + (*(argv + 1)) ? (argused_ = 1, *(argv + 1)) : (x)) +#define EARGF(x) ARGF_(((x), exit(1), (char *)0)) +#define ARGF() ARGF_((char *)0) + +#endif diff --git a/components/datetime.c b/components/datetime.c new file mode 100644 index 0000000..5b10daf --- /dev/null +++ b/components/datetime.c @@ -0,0 +1,20 @@ +/* See LICENSE file for copyright and license details. */ +#include <stdio.h> +#include <time.h> + +#include "../slstatus.h" +#include "../util.h" + +const char * +datetime(const char *fmt) +{ + time_t t; + + t = time(NULL); + if (!strftime(buf, sizeof(buf), fmt, localtime(&t))) { + warn("strftime: Result string exceeds buffer size"); + return NULL; + } + + return buf; +} diff --git a/components/netspeeds.c b/components/netspeeds.c new file mode 100644 index 0000000..b61b4c9 --- /dev/null +++ b/components/netspeeds.c @@ -0,0 +1,74 @@ +/* See LICENSE file for copyright and license details. */ +#include <limits.h> +#include <stdio.h> + +#include "../slstatus.h" +#include "../util.h" + +#if defined(__linux__) + #include <stdint.h> + + #define NET_RX_BYTES "/sys/class/net/%s/statistics/rx_bytes" + + const char * + netspeed_rx(const char *interface) + { + uintmax_t oldrxbytes; + static uintmax_t rxbytes; + extern const unsigned int interval; + char path[PATH_MAX]; + + oldrxbytes = rxbytes; + + if (esnprintf(path, sizeof(path), NET_RX_BYTES, interface) < 0) + return NULL; + if (pscanf(path, "%ju", &rxbytes) != 1) + return NULL; + if (oldrxbytes == 0) + return NULL; + + return fmt_human((rxbytes - oldrxbytes) * 1000 / interval, + 1024); + } + +#elif defined(__OpenBSD__) | defined(__FreeBSD__) + #include <ifaddrs.h> + #include <net/if.h> + #include <string.h> + #include <sys/types.h> + #include <sys/socket.h> + + const char * + netspeed_tx(const char *interface) + { + struct ifaddrs *ifal, *ifa; + struct if_data *ifd; + uintmax_t oldtxbytes; + static uintmax_t txbytes; + extern const unsigned int interval; + int if_ok = 0; + + oldtxbytes = txbytes; + + if (getifaddrs(&ifal) < 0) { + warn("getifaddrs failed"); + return NULL; + } + txbytes = 0; + for (ifa = ifal; ifa; ifa = ifa->ifa_next) + if (!strcmp(ifa->ifa_name, interface) && + (ifd = (struct if_data *)ifa->ifa_data)) + txbytes += ifd->ifi_obytes, if_ok = 1; + + freeifaddrs(ifal); + if (!if_ok) { + warn("reading 'if_data' failed"); + return NULL; + } + if (oldtxbytes == 0) + return NULL; + + return fmt_human((txbytes - oldtxbytes) * 1000 / interval, + 1024); + } +#endif diff --git a/components/ram.c b/components/ram.c new file mode 100644 index 0000000..da2021f --- /dev/null +++ b/components/ram.c @@ -0,0 +1,89 @@ +/* See LICENSE file for copyright and license details. */ +#include <stdio.h> + +#include "../slstatus.h" +#include "../util.h" + +#if defined(__linux__) + #include <stdint.h> + + const char * + ram_perc(const char *unused) + { + uintmax_t total, free, buffers, cached; + int percent; + + if (pscanf("/proc/meminfo", + "MemTotal: %ju kB\n" + "MemFree: %ju kB\n" + "MemAvailable: %ju kB\n" + "Buffers: %ju kB\n" + "Cached: %ju kB\n", + &total, &free, &buffers, &buffers, &cached) != 5) + return NULL; + + if (total == 0) + return NULL; + + percent = 100 * ((total - free) - (buffers + cached)) / total; + return bprintf("%d", percent); + } +#elif defined(__OpenBSD__) + #include <stdlib.h> + #include <sys/sysctl.h> + #include <sys/types.h> + #include <unistd.h> + + #define LOG1024 10 + #define pagetok(size, pageshift) (size_t)(size << (pageshift - LOG1024)) + + inline int + load_uvmexp(struct uvmexp *uvmexp) + { + int uvmexp_mib[] = {CTL_VM, VM_UVMEXP}; + size_t size; + + size = sizeof(*uvmexp); + + if (sysctl(uvmexp_mib, 2, uvmexp, &size, NULL, 0) >= 0) + return 1; + + return 0; + } + + const char * + ram_perc(const char *unused) + { + struct uvmexp uvmexp; + int percent; + + if (!load_uvmexp(&uvmexp)) + return NULL; + + percent = uvmexp.active * 100 / uvmexp.npages; + return bprintf("%d", percent); + } +#elif defined(__FreeBSD__) + #include <sys/sysctl.h> + #include <sys/vmmeter.h> + #include <unistd.h> + #include <vm/vm_param.h> + + const char * + ram_perc(const char *unused) { + unsigned int npages; + unsigned int active; + size_t len; + + len = sizeof(npages); + if (sysctlbyname("vm.stats.vm.v_page_count", + &npages, &len, NULL, 0) < 0 || !len) + return NULL; + + if (sysctlbyname("vm.stats.vm.v_active_count", + &active, &len, NULL, 0) < 0 || !len) + return NULL; + + return bprintf("%d", active * 100 / npages); + } +#endif diff --git a/components/run_command.c b/components/run_command.c new file mode 100644 index 0000000..93bf6da --- /dev/null +++ b/components/run_command.c @@ -0,0 +1,31 @@ +/* See LICENSE file for copyright and license details. */ +#include <stdio.h> +#include <string.h> + +#include "../slstatus.h" +#include "../util.h" + +const char * +run_command(const char *cmd) +{ + char *p; + FILE *fp; + + if (!(fp = popen(cmd, "r"))) { + warn("popen '%s':", cmd); + return NULL; + } + + p = fgets(buf, sizeof(buf) - 1, fp); + if (pclose(fp) < 0) { + warn("pclose '%s':", cmd); + return NULL; + } + if (!p) + return NULL; + + if ((p = strrchr(buf, '\n'))) + p[0] = '\0'; + + return buf[0] ? buf : NULL; +} diff --git a/components/volume b/components/volume new file mode 100644 index 0000000..3249774 --- /dev/null +++ b/components/volume @@ -0,0 +1,4 @@ +#!/bin/sh + +vol="$(pactl list sinks | grep '^[[:space:]]Volume:' | head -n $(( $SINK + 1 )) | tail -n 1 | sed -e 's,.* \([0-9][0-9]*\)%.*,\1,')" +[ "$vol" = "0" ] && echo "ﱝ muted" || echo "墳 ${vol}%" diff --git a/config.h b/config.h new file mode 100644 index 0000000..7ec4b55 --- /dev/null +++ b/config.h @@ -0,0 +1,21 @@ +/* See LICENSE file for copyright and license details. */ + +/* interval between updates (in ms) */ +const unsigned int interval = 1000; + +/* text to show if no value can be retrieved */ +static const char unknown_str[] = "n/a"; + +/* maximum output string length */ +#define MAXLEN 2048 + +static const struct arg args[] = { + /* function format argument */ + + /* WIFI { netspeed_rx, "%sB/s", "wlp3s0" }, */ + + { netspeed_rx, "[ %s B/s ]", "enp4s0" }, + { run_command, "[ %s ]", "volume" }, + { ram_perc, "[ %s%% ]", NULL }, + { datetime, " %s", "%a %b %d %r" }, +}; diff --git a/config.mk b/config.mk new file mode 100644 index 0000000..ead1859 --- /dev/null +++ b/config.mk @@ -0,0 +1,22 @@ +# slstatus version +VERSION = 0 + +# customize below to fit your system + +# paths +PREFIX = /usr/local +MANPREFIX = $(PREFIX)/share/man + +X11INC = /usr/X11R6/include +X11LIB = /usr/X11R6/lib + +# flags +CPPFLAGS = -I$(X11INC) -D_DEFAULT_SOURCE +CFLAGS = -std=c99 -pedantic -Wall -Wextra -Wno-unused-parameter -Os +LDFLAGS = -L$(X11LIB) -s +# OpenBSD: add -lsndio +# FreeBSD: add -lkvm -lsndio +LDLIBS = -lX11 + +# compiler and linker +CC = cc diff --git a/slstatus.1 b/slstatus.1 new file mode 100644 index 0000000..bea2a8c --- /dev/null +++ b/slstatus.1 @@ -0,0 +1,45 @@ +.Dd 2023-04-23 +.Dt SLSTATUS 1 +.Os +.Sh NAME +.Nm slstatus +.Nd suckless status +.Sh SYNOPSIS +.Nm +.Op Fl s +.Op Fl 1 +.Sh DESCRIPTION +.Nm +is a small tool for providing system status information to other programs +over the EWMH +.Em WM_NAME +property of the root window (used by +.Xr dwm 1 ) or standard input/output. It is designed to be as efficient as possible by +only issuing the minimum of system calls required. +.P +By default, +.Nm +outputs to WM_NAME. +.Sh OPTIONS +.Bl -tag -width Ds +.It Fl s +Write to stdout instead of WM_NAME. +.It Fl 1 +Write once to stdout and quit. +.El +.Sh CUSTOMIZATION +.Nm +can be customized by creating a custom config.h and (re)compiling the source +code. This keeps it fast, secure and simple. +.Sh SIGNALS +.Nm +responds to the following signals: +.Pp +.Bl -tag -width TERM -compact +.It USR1 +Triggers an instant redraw. +.El +.Sh AUTHORS +See the LICENSE file for the authors. +.Sh SEE ALSO +.Xr dwm 1 diff --git a/slstatus.c b/slstatus.c new file mode 100644 index 0000000..cb54f29 --- /dev/null +++ b/slstatus.c @@ -0,0 +1,132 @@ +/* See LICENSE file for copyright and license details. */ +#include <errno.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <X11/Xlib.h> + +#include "arg.h" +#include "slstatus.h" +#include "util.h" + +struct arg { + const char *(*func)(const char *); + const char *fmt; + const char *args; +}; + +char buf[1024]; +static volatile sig_atomic_t done; +static Display *dpy; + +#include "config.h" + +static void +terminate(const int signo) +{ + if (signo != SIGUSR1) + done = 1; +} + +static void +difftimespec(struct timespec *res, struct timespec *a, struct timespec *b) +{ + res->tv_sec = a->tv_sec - b->tv_sec - (a->tv_nsec < b->tv_nsec); + res->tv_nsec = a->tv_nsec - b->tv_nsec + + (a->tv_nsec < b->tv_nsec) * 1E9; +} + +static void +usage(void) +{ + die("usage: %s [-s] [-1]", argv0); +} + +int +main(int argc, char *argv[]) +{ + struct sigaction act; + struct timespec start, current, diff, intspec, wait; + size_t i, len; + int sflag, ret; + char status[MAXLEN]; + const char *res; + + sflag = 0; + ARGBEGIN { + case '1': + done = 1; + /* FALLTHROUGH */ + case 's': + sflag = 1; + break; + default: + usage(); + } ARGEND + + if (argc) + usage(); + + memset(&act, 0, sizeof(act)); + act.sa_handler = terminate; + sigaction(SIGINT, &act, NULL); + sigaction(SIGTERM, &act, NULL); + act.sa_flags |= SA_RESTART; + sigaction(SIGUSR1, &act, NULL); + + if (!sflag && !(dpy = XOpenDisplay(NULL))) + die("XOpenDisplay: Failed to open display"); + + do { + if (clock_gettime(CLOCK_MONOTONIC, &start) < 0) + die("clock_gettime:"); + + status[0] = '\0'; + for (i = len = 0; i < LEN(args); i++) { + if (!(res = args[i].func(args[i].args))) + res = unknown_str; + + if ((ret = esnprintf(status + len, sizeof(status) - len, + args[i].fmt, res)) < 0) + break; + + len += ret; + } + + if (sflag) { + puts(status); + fflush(stdout); + if (ferror(stdout)) + die("puts:"); + } else { + if (XStoreName(dpy, DefaultRootWindow(dpy), status) < 0) + die("XStoreName: Allocation failed"); + XFlush(dpy); + } + + if (!done) { + if (clock_gettime(CLOCK_MONOTONIC, ¤t) < 0) + die("clock_gettime:"); + difftimespec(&diff, ¤t, &start); + + intspec.tv_sec = interval / 1000; + intspec.tv_nsec = (interval % 1000) * 1E6; + difftimespec(&wait, &intspec, &diff); + + if (wait.tv_sec >= 0 && + nanosleep(&wait, NULL) < 0 && + errno != EINTR) + die("nanosleep:"); + } + } while (!done); + + if (!sflag) { + XStoreName(dpy, DefaultRootWindow(dpy), NULL); + if (XCloseDisplay(dpy) < 0) + die("XCloseDisplay: Failed to close display"); + } + + return 0; +} diff --git a/slstatus.h b/slstatus.h new file mode 100644 index 0000000..aa3f7a0 --- /dev/null +++ b/slstatus.h @@ -0,0 +1,16 @@ +/* See LICENSE file for copyright and license details. */ + +/* datetime */ +const char *datetime(const char *fmt); + +/* netspeeds */ +const char *netspeed_rx(const char *interface); + +/* num_files */ +const char *num_files(const char *path); + +/* ram */ +const char *ram_perc(const char *unused); + +/* run_command */ +const char *run_command(const char *cmd); @@ -0,0 +1,141 @@ +/* See LICENSE file for copyright and license details. */ +#include <errno.h> +#include <stdarg.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "util.h" + +char *argv0; + +static void +verr(const char *fmt, va_list ap) +{ + vfprintf(stderr, fmt, ap); + + if (fmt[0] && fmt[strlen(fmt) - 1] == ':') { + fputc(' ', stderr); + perror(NULL); + } else { + fputc('\n', stderr); + } +} + +void +warn(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + verr(fmt, ap); + va_end(ap); +} + +void +die(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + verr(fmt, ap); + va_end(ap); + + exit(1); +} + +static int +evsnprintf(char *str, size_t size, const char *fmt, va_list ap) +{ + int ret; + + ret = vsnprintf(str, size, fmt, ap); + + if (ret < 0) { + warn("vsnprintf:"); + return -1; + } else if ((size_t)ret >= size) { + warn("vsnprintf: Output truncated"); + return -1; + } + + return ret; +} + +int +esnprintf(char *str, size_t size, const char *fmt, ...) +{ + va_list ap; + int ret; + + va_start(ap, fmt); + ret = evsnprintf(str, size, fmt, ap); + va_end(ap); + + return ret; +} + +const char * +bprintf(const char *fmt, ...) +{ + va_list ap; + int ret; + + va_start(ap, fmt); + ret = evsnprintf(buf, sizeof(buf), fmt, ap); + va_end(ap); + + return (ret < 0) ? NULL : buf; +} + +const char * +fmt_human(uintmax_t num, int base) +{ + double scaled; + size_t i, prefixlen; + const char **prefix; + const char *prefix_1000[] = { "", "k", "M", "G", "T", "P", "E", "Z", + "Y" }; + const char *prefix_1024[] = { "", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", + "Zi", "Yi" }; + + switch (base) { + case 1000: + prefix = prefix_1000; + prefixlen = LEN(prefix_1000); + break; + case 1024: + prefix = prefix_1024; + prefixlen = LEN(prefix_1024); + break; + default: + warn("fmt_human: Invalid base"); + return NULL; + } + + scaled = num; + for (i = 0; i < prefixlen && scaled >= base; i++) + scaled /= base; + + return bprintf("%.1f %s", scaled, prefix[i]); +} + +int +pscanf(const char *path, const char *fmt, ...) +{ + FILE *fp; + va_list ap; + int n; + + if (!(fp = fopen(path, "r"))) { + warn("fopen '%s':", path); + return -1; + } + va_start(ap, fmt); + n = vfscanf(fp, fmt, ap); + va_end(ap); + fclose(fp); + + return (n == EOF) ? -1 : n; +} @@ -0,0 +1,16 @@ +/* See LICENSE file for copyright and license details. */ +#include <stdint.h> + +extern char buf[1024]; + +#define LEN(x) (sizeof(x) / sizeof((x)[0])) + +extern char *argv0; + +void warn(const char *, ...); +void die(const char *, ...); + +int esnprintf(char *str, size_t size, const char *fmt, ...); +const char *bprintf(const char *fmt, ...); +const char *fmt_human(uintmax_t num, int base); +int pscanf(const char *path, const char *fmt, ...); |