9ac721c23f
Starting with OpenBSD 6.7 regular users cannot access raw audio devices anymore, for improved security. Instead use the sioctl_open(3) API to access and manipulate audio controls exposed by sndiod(8). On the first call a permanent connection is established with the running sndiod daemon, and call-back functions are registered which are triggered when audio controls are changed (e.g., a USB headset is attached) or when the volume is modified. On subsequent calls we poll for changes; if there are no volume changes this costs virtually nothing. Joint work with Alexandre Ratchov
69 lines
3.8 KiB
C
69 lines
3.8 KiB
C
/* See LICENSE file for copyright and license details. */
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/* interval between updates (in ms) */
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const unsigned int interval = 1000;
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/* text to show if no value can be retrieved */
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static const char unknown_str[] = "n/a";
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/* maximum output string length */
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#define MAXLEN 2048
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/*
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* function description argument (example)
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*
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* battery_perc battery percentage battery name (BAT0)
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* NULL on OpenBSD/FreeBSD
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* battery_state battery charging state battery name (BAT0)
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* NULL on OpenBSD/FreeBSD
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* battery_remaining battery remaining HH:MM battery name (BAT0)
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* NULL on OpenBSD/FreeBSD
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* cpu_perc cpu usage in percent NULL
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* cpu_freq cpu frequency in MHz NULL
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* datetime date and time format string (%F %T)
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* disk_free free disk space in GB mountpoint path (/)
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* disk_perc disk usage in percent mountpoint path (/)
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* disk_total total disk space in GB mountpoint path (/")
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* disk_used used disk space in GB mountpoint path (/)
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* entropy available entropy NULL
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* gid GID of current user NULL
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* hostname hostname NULL
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* ipv4 IPv4 address interface name (eth0)
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* ipv6 IPv6 address interface name (eth0)
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* kernel_release `uname -r` NULL
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* keyboard_indicators caps/num lock indicators format string (c?n?)
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* see keyboard_indicators.c
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* keymap layout (variant) of current NULL
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* keymap
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* load_avg load average NULL
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* netspeed_rx receive network speed interface name (wlan0)
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* netspeed_tx transfer network speed interface name (wlan0)
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* num_files number of files in a directory path
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* (/home/foo/Inbox/cur)
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* ram_free free memory in GB NULL
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* ram_perc memory usage in percent NULL
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* ram_total total memory size in GB NULL
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* ram_used used memory in GB NULL
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* run_command custom shell command command (echo foo)
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* separator string to echo NULL
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* swap_free free swap in GB NULL
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* swap_perc swap usage in percent NULL
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* swap_total total swap size in GB NULL
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* swap_used used swap in GB NULL
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* temp temperature in degree celsius sensor file
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* (/sys/class/thermal/...)
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* NULL on OpenBSD
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* thermal zone on FreeBSD
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* (tz0, tz1, etc.)
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* uid UID of current user NULL
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* uptime system uptime NULL
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* username username of current user NULL
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* vol_perc OSS/ALSA volume in percent mixer file (/dev/mixer)
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* NULL on OpenBSD
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* wifi_perc WiFi signal in percent interface name (wlan0)
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* wifi_essid WiFi ESSID interface name (wlan0)
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*/
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static const struct arg args[] = {
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/* function format argument */
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{ datetime, "%s", "%F %T" },
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};
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