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Fixed improper size displaying in 'df' utility

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'df' command used to display filesystem usage statistics as integer
values, in most cases rounding the actual value down. Because of
that 'df' tended to display faulty size values.
This fix to 'df' utility calculates the fractional part of the size,
then it rounds it when needed to the nearest one-digit integer value
and displays after decimal dot.

Change-Id: I9bc52635d45d3e55ce61b3b1c6b80d1267516e75
This commit is contained in:
Michal Frynas 2011-07-14 15:20:05 +02:00 committed by Kenneth Andersson
parent 1c0c52503d
commit 1f90dcd0c0
1 changed files with 11 additions and 5 deletions
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16
toolbox/df.c
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@ -9,16 +9,22 @@ static int ok = EXIT_SUCCESS;
static void printsize(long long n)
{
char unit = 'K';
n /= 1024;
if (n > 1024) {
long long t;
n *= 10;
if (n > 1024*1024*10) {
n /= 1024;
unit = 'M';
}
if (n > 1024) {
if (n > 1024*1024*10) {
n /= 1024;
unit = 'G';
}
printf("%4lld%c", n, unit);
t = (n + 512) / 1024;
printf("%4lld.%1lld%c", t/10, t%10, unit);
}
static void df(char *s, int always) {
@ -41,7 +47,7 @@ static void df(char *s, int always) {
}
int df_main(int argc, char *argv[]) {
printf("Filesystem Size Used Free Blksize\n");
printf("Filesystem Size Used Free Blksize\n");
if (argc == 1) {
char s[2000];
FILE *f = fopen("/proc/mounts", "r");