void df_all(void)
{
FILE *f;
struct mntent *mnt;
f = setmntent("/etc/mtab", "r");
if (f) {
while (mnt = getmntent(f))
df_path(mnt->mnt_dir, mnt->mnt_fsname, mnt->mnt_dir);
endmntent(f);
} else {
fprintf(stderr, "df: cannot open /etc/mtab: %s\n", strerror(errno));
}
}
void df_all(void)
{
FILE *f;
char tmp[MTAB_LINE];
char* dev;
char* mntpt;
f = fopen("/etc/mtab", "r");
if (f) {
while (fgets(tmp, MTAB_LINE, f)) {
dev = strtok(tmp, " ");
mntpt = strtok(NULL, " ");
if (mntpt)
df_path(mntpt);
}
fclose(f);
} else {
fprintf(stderr, "df: cannot open /etc/mtab: %s\n", strerror(errno));
}
}
int main(int argc, char *argv[])
{
char *p;
int i;
for (i = 1; i < argc; ++i) {
p = argv[i];
if (p[0] == '-') {
for (++p; *p; ++p) {
switch (*p) {
case 'i': iflag = 1; break;
case 'k': kflag = 1; break;
case 'f': fflag = 1; break;
default:
printf("usage: %s [-ikf]\n", argv[0]);
return 1;
}
}
} else {
break;
}
}
printf("%-16s %6s %6s %6s %6s %s\n",
"Filesystem",
iflag ? "Inodes" : kflag ? "KBytes" : "Blocks",
iflag ? "IUsed" : "Used",
iflag ? "IFree" : "Free",
iflag ? (fflag ? "%IFree" : "%IUsed") : (fflag ? "%Free" : "%Used"),
"Mounted on");
if (i < argc) {
for (; i < argc; ++i) {
df_path(argv[i]);
}
} else {
df_all();
}
return 0;
}
