tauxstats: use acpi to find battery info on Linux (Andrey Mirtchovski) - plan9port - [fork] Plan 9 from user space
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---
(DIR) commit 7be768e78cf98b051616d4404d75d1fbb3f39890
(DIR) parent d96dce4d873583ce58bd04107fdbded838049306
(HTM) Author: Russ Cox <rsc@swtch.com>
Date: Sat, 15 Sep 2007 19:06:48 -0400
auxstats: use acpi to find battery info on Linux (Andrey Mirtchovski)
Diffstat:
M src/cmd/auxstats/Linux.c | 31 ++++++++++++++++++++++++++-----
1 file changed, 26 insertions(+), 5 deletions(-)
---
(DIR) diff --git a/src/cmd/auxstats/Linux.c b/src/cmd/auxstats/Linux.c
t@@ -22,16 +22,37 @@ void (*statfn[])(int) =
void
xapm(int first)
{
- static int fd = -1;
+ static int fd = -1, fdb = -1;
+ int i, last = -1, curr = -1;
if(first){
- fd = open("/proc/apm", OREAD);
+ fd = open("/proc/acpi/battery/BAT0/info", OREAD);
+ fdb = open("/proc/acpi/battery/BAT0/state", OREAD);
return;
}
+ if(fd == -1 || fdb == -1)
+ return;
+
readfile(fd);
- tokens(0);
- if(ntok >= 7 && atoi(tok[6]) != -1)
- Bprint(&bout, "battery =%d 100\n", atoi(tok[6]));
+ for(i=0; i<nline; i++){
+ tokens(i);
+ if(ntok < 3)
+ continue;
+ if(strcmp(tok[0], "last") == 0 && strcmp(tok[1], "full") == 0)
+ last = atoi(tok[3]);
+ }
+ readfile(fdb);
+ for(i = 0; i < nline; i++) {
+ tokens(i);
+ if(ntok < 3)
+ continue;
+ if(strcmp(tok[0], "remaining") == 0 && strcmp(tok[1], "capacity:") == 0)
+ curr = atoi(tok[2]);
+ }
+
+ if(curr != -1 && last != -1)
+ Bprint(&bout, "battery =%d 100\n", (int)(((float)curr/(float)last)*100.0));
+
}
void