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Updates to handle Linux 2.4.0 kernels (kludged around the "none" entries in

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/proc/mounts, added a hack to make sysinfo work with both old and new kernels).
 -Erik
This commit is contained in:
Eric Andersen
2000-06-26 10:45:52 +00:00
parent 8a24a6783a
commit 10dc9d4d17
14 changed files with 159 additions and 47 deletions
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36
procps/free.c
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@ -23,20 +23,36 @@
#include "internal.h"
#include <stdio.h>
#include <sys/sysinfo.h>
#include <errno.h>
#define DIVISOR 1024
extern int free_main(int argc, char **argv)
{
struct sysinfo info;
sysinfo(&info);
info.totalram/=DIVISOR;
info.freeram/=DIVISOR;
info.totalswap/=DIVISOR;
info.freeswap/=DIVISOR;
info.sharedram/=DIVISOR;
info.bufferram/=DIVISOR;
/* Kernels prior to 2.4.x will return info.mem_unit==0. Kernels after
* 2.4.x actually fill this value in */
if (info.mem_unit==0) {
/* Looks like we have a kernel prior to Linux 2.4.x */
info.mem_unit=1024;
info.totalram/=info.mem_unit;
info.freeram/=info.mem_unit;
info.totalswap/=info.mem_unit;
info.freeswap/=info.mem_unit;
info.sharedram/=info.mem_unit;
info.bufferram/=info.mem_unit;
} else {
/* Bah. Linux 2.4.x completely changed sysinfo. This can in theory
overflow a 32 bit unsigned long, but who puts more then 4GiB ram+swap
on an embedded system? */
info.mem_unit/=1024;
info.totalram*=info.mem_unit;
info.freeram*=info.mem_unit;
info.totalswap*=info.mem_unit;
info.freeswap*=info.mem_unit;
info.sharedram*=info.mem_unit;
info.bufferram*=info.mem_unit;
}
if (argc > 1 && **(argv + 1) == '-') {
usage("free\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
@ -61,3 +77,5 @@ extern int free_main(int argc, char **argv)
info.freeram+info.freeswap);
return(TRUE);
}