#include <sys/cdefs.h>
#ifndef lint
__used static const char copyright[] =
"@(#) Copyright (c) 1980, 1990, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#ifndef lint
#if 0
static char sccsid[] = "@(#)df.c 8.9 (Berkeley) 5/8/95";
#else
__used static const char rcsid[] =
"$FreeBSD: src/bin/df/df.c,v 1.23.2.9 2002/07/01 00:14:24 iedowse Exp $";
#endif
#endif
#ifdef __APPLE__
#define MNT_IGNORE 0
#endif
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/sysctl.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fstab.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include <libutil.h>
#ifdef __APPLE__
#include "get_compat.h"
#else
#define COMPAT_MODE(func, mode) 1
#endif
#define UNITS_SI 1
#define UNITS_2 2
#define KILO_SZ(n) (n)
#define MEGA_SZ(n) ((n) * (n))
#define GIGA_SZ(n) ((n) * (n) * (n))
#define TERA_SZ(n) ((n) * (n) * (n) * (n))
#define PETA_SZ(n) ((n) * (n) * (n) * (n) * (n))
#define KILO_2_SZ (KILO_SZ(1024ULL))
#define MEGA_2_SZ (MEGA_SZ(1024ULL))
#define GIGA_2_SZ (GIGA_SZ(1024ULL))
#define TERA_2_SZ (TERA_SZ(1024ULL))
#define PETA_2_SZ (PETA_SZ(1024ULL))
#define KILO_SI_SZ (KILO_SZ(1000ULL))
#define MEGA_SI_SZ (MEGA_SZ(1000ULL))
#define GIGA_SI_SZ (GIGA_SZ(1000ULL))
#define TERA_SI_SZ (TERA_SZ(1000ULL))
#define PETA_SI_SZ (PETA_SZ(1000ULL))
struct maxwidths {
int mntfrom;
int total;
int used;
int avail;
int iused;
int ifree;
};
unsigned long long vals_si [] = {1, KILO_SI_SZ, MEGA_SI_SZ, GIGA_SI_SZ, TERA_SI_SZ, PETA_SI_SZ};
unsigned long long vals_base2[] = {1, KILO_2_SZ, MEGA_2_SZ, GIGA_2_SZ, TERA_2_SZ, PETA_2_SZ};
unsigned long long *valp;
typedef enum { NONE, KILO, MEGA, GIGA, TERA, PETA, UNIT_MAX } unit_t;
unit_t unitp [] = { NONE, KILO, MEGA, GIGA, TERA, PETA };
int bread(off_t, void *, int);
int checkvfsname(const char *, char **);
char *getmntpt(char *);
int int64width(int64_t);
char *makenetvfslist(void);
char **makevfslist(const char *);
void prthuman(struct statfs *, uint64_t);
void prthumanval(int64_t);
void prtstat(struct statfs *, struct maxwidths *);
long regetmntinfo(struct statfs **, long, char **);
unit_t unit_adjust(double *);
void update_maxwidths(struct maxwidths *, struct statfs *);
void usage(void);
int aflag = 0, hflag, iflag, nflag;
static __inline int imax(int a, int b)
{
return (a > b ? a : b);
}
int
main(int argc, char *argv[])
{
struct stat stbuf;
struct statfs statfsbuf, *mntbuf;
struct maxwidths maxwidths;
char *mntpt, **vfslist;
long mntsize;
int ch, i, rv, tflag = 0, kludge_tflag = 0;
int kflag = 0;
const char *options = "abgHhiklmnPt:T:";
if (COMPAT_MODE("bin/df", "unix2003")) {
options = "abgHhiklmnPtT:";
iflag = 1;
}
vfslist = NULL;
while ((ch = getopt(argc, argv, options)) != -1)
switch (ch) {
case 'a':
aflag = 1;
break;
case 'b':
case 'P':
if (COMPAT_MODE("bin/df", "unix2003")) {
if (!kflag) {
putenv("BLOCKSIZE=512");
}
iflag = 0;
} else {
putenv("BLOCKSIZE=512");
}
hflag = 0;
break;
case 'g':
putenv("BLOCKSIZE=1g");
hflag = 0;
break;
case 'H':
hflag = UNITS_SI;
valp = vals_si;
break;
case 'h':
hflag = UNITS_2;
valp = vals_base2;
break;
case 'i':
iflag = 1;
break;
case 'k':
if (COMPAT_MODE("bin/df", "unix2003")) {
putenv("BLOCKSIZE=1024");
} else {
putenv("BLOCKSIZE=1k");
}
kflag = 1;
hflag = 0;
break;
case 'l':
if (tflag)
errx(1, "-l and -T are mutually exclusive.");
if (vfslist != NULL)
break;
vfslist = makevfslist(makenetvfslist());
break;
case 'm':
putenv("BLOCKSIZE=1m");
hflag = 0;
break;
case 'n':
nflag = 1;
break;
case 't':
if (COMPAT_MODE("bin/df", "unix2003")) {
kludge_tflag = 1;
break;
}
case 'T':
if (vfslist != NULL) {
if (tflag)
errx(1, "only one -%c option may be specified", ch);
else
errx(1, "-l and -%c are mutually exclusive.", ch);
}
tflag++;
vfslist = makevfslist(optarg);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (tflag == 0 && kludge_tflag && *argv && stat(*argv, &stbuf) < 0
&& errno == ENOENT) {
vfslist = makevfslist(*argv++);
}
mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
bzero(&maxwidths, sizeof(maxwidths));
for (i = 0; i < mntsize; i++)
update_maxwidths(&maxwidths, &mntbuf[i]);
rv = 0;
if (!*argv) {
mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
bzero(&maxwidths, sizeof(maxwidths));
for (i = 0; i < mntsize; i++)
update_maxwidths(&maxwidths, &mntbuf[i]);
for (i = 0; i < mntsize; i++) {
if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
prtstat(&mntbuf[i], &maxwidths);
}
exit(rv);
}
for (; *argv; argv++) {
if (stat(*argv, &stbuf) < 0) {
if ((mntpt = getmntpt(*argv)) == 0) {
warn("%s", *argv);
rv = 1;
continue;
}
} else if (S_ISCHR(stbuf.st_mode) || S_ISBLK(stbuf.st_mode)) {
warnx("%s: Raw devices not supported", *argv);
rv = 1;
continue;
} else
mntpt = *argv;
if (statfs(mntpt, &statfsbuf) < 0) {
warn("%s", mntpt);
rv = 1;
continue;
}
if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
rv++;
continue;
}
if (argc == 1) {
bzero(&maxwidths, sizeof(maxwidths));
update_maxwidths(&maxwidths, &statfsbuf);
}
prtstat(&statfsbuf, &maxwidths);
}
return (rv);
}
char *
getmntpt(char *name)
{
long mntsize, i;
struct statfs *mntbuf;
mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
for (i = 0; i < mntsize; i++) {
if (!strcmp(mntbuf[i].f_mntfromname, name))
return (mntbuf[i].f_mntonname);
}
return (0);
}
long
regetmntinfo(struct statfs **mntbufp, long mntsize, char **vfslist)
{
int i, j;
struct statfs *mntbuf;
if (vfslist == NULL)
return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
mntbuf = *mntbufp;
for (j = 0, i = 0; i < mntsize; i++) {
if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
continue;
if (!nflag)
(void)statfs(mntbuf[i].f_mntonname,&mntbuf[j]);
else if (i != j)
mntbuf[j] = mntbuf[i];
j++;
}
return (j);
}
unit_t
unit_adjust(double *val)
{
double abval;
unit_t unit;
unsigned int unit_sz;
abval = fabs(*val);
unit_sz = abval ? ilogb(abval) / 10 : 0;
if (unit_sz >= UNIT_MAX) {
unit = NONE;
} else {
unit = unitp[unit_sz];
*val /= (double)valp[unit_sz];
}
return (unit);
}
void
prthuman(struct statfs *sfsp, uint64_t used)
{
int64_t value;
value = sfsp->f_blocks;
value *= sfsp->f_bsize;
prthumanval(value);
value = used;
value *= sfsp->f_bsize;
prthumanval(value);
value = sfsp->f_bavail;
value *= sfsp->f_bsize;
prthumanval(value);
}
void
prthumanval(int64_t bytes)
{
char buf[6];
int flags;
flags = HN_B | HN_NOSPACE | HN_DECIMAL;
if (hflag == UNITS_SI)
flags |= HN_DIVISOR_1000;
humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
bytes, "", HN_AUTOSCALE, flags);
if (hflag == UNITS_SI)
(void)printf(" %6s", buf);
else
(void)printf("%6si", buf);
}
static intmax_t fsbtoblk(int64_t num, uint64_t fsbs, u_long bs, char *fs)
{
if (num < 0) {
warnx("negative filesystem block count/size from fs %s", fs);
return 0;
} else if ((fsbs != 0) && (fsbs < bs)) {
return (num / (intmax_t) (bs / fsbs));
} else {
return (num * (intmax_t) (fsbs / bs));
}
}
void
prtstat(struct statfs *sfsp, struct maxwidths *mwp)
{
static long blocksize;
static int headerlen, timesthrough;
static const char *header;
uint64_t used, availblks, inodes;
char * avail_str;
if (++timesthrough == 1) {
mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem"));
if (hflag) {
header = " Size";
mwp->total = mwp->used = mwp->avail = (int)strlen(header);
} else {
header = getbsize(&headerlen, &blocksize);
mwp->total = imax(mwp->total, headerlen);
}
mwp->used = imax(mwp->used, (int)strlen("Used"));
if (COMPAT_MODE("bin/df", "unix2003") && !hflag) {
avail_str = "Available";
} else {
avail_str = "Avail";
}
mwp->avail = imax(mwp->avail, (int)strlen(avail_str));
(void)printf("%-*s %*s %*s %*s Capacity", mwp->mntfrom,
"Filesystem", mwp->total, header, mwp->used, "Used",
mwp->avail, avail_str);
if (iflag) {
mwp->iused = imax(mwp->iused, (int)strlen(" iused"));
mwp->ifree = imax(mwp->ifree, (int)strlen("ifree"));
(void)printf(" %*s %*s %%iused", mwp->iused - 2,
"iused", mwp->ifree, "ifree");
}
(void)printf(" Mounted on\n");
}
(void)printf("%-*s", mwp->mntfrom, sfsp->f_mntfromname);
if (sfsp->f_blocks > sfsp->f_bfree)
used = sfsp->f_blocks - sfsp->f_bfree;
else
used = 0;
availblks = sfsp->f_bavail + used;
if (hflag) {
prthuman(sfsp, used);
} else {
(void)printf(" %*jd %*jd %*jd", mwp->total,
fsbtoblk(sfsp->f_blocks, sfsp->f_bsize, blocksize, sfsp->f_mntonname),
mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize, sfsp->f_mntonname),
mwp->avail, fsbtoblk(sfsp->f_bavail, sfsp->f_bsize, blocksize, sfsp->f_mntonname));
}
if (COMPAT_MODE("bin/df", "unix2003")) {
double value;
if (availblks == 0)
value = 100.0;
else {
value = (double)used / (double)availblks * 100.0;
if ((value-(int)value) > 0.0) value = value + 1.0;
}
(void)printf(" %5.0f%%", trunc(value));
} else {
(void)printf(" %5.0f%%",
availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
}
if (iflag) {
inodes = sfsp->f_files;
used = inodes - sfsp->f_ffree;
(void)printf(" %*llu %*llu %4.0f%% ", mwp->iused, used,
mwp->ifree, sfsp->f_ffree, inodes == 0 ? 100.0 :
(double)used / (double)inodes * 100.0);
} else
(void)printf(" ");
(void)printf(" %s\n", sfsp->f_mntonname);
}
void
update_maxwidths(struct maxwidths *mwp, struct statfs *sfsp)
{
static long blocksize;
int dummy;
if (blocksize == 0)
getbsize(&dummy, &blocksize);
mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname));
mwp->total = imax(mwp->total, int64width(fsbtoblk(sfsp->f_blocks,
sfsp->f_bsize, blocksize, sfsp->f_mntonname)));
if (sfsp->f_blocks >= sfsp->f_bfree)
mwp->used = imax(mwp->used, int64width(fsbtoblk(sfsp->f_blocks -
sfsp->f_bfree, sfsp->f_bsize, blocksize, sfsp->f_mntonname)));
mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail,
sfsp->f_bsize, blocksize, sfsp->f_mntonname)));
mwp->iused = imax(mwp->iused, int64width(sfsp->f_files - sfsp->f_ffree));
mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree));
}
int
int64width(int64_t val)
{
int len;
len = 0;
if (val <= 0) {
val = -val;
len++;
}
while (val > 0) {
len++;
val /= 10;
}
return (len);
}
void
usage(void)
{
char *t_flag = COMPAT_MODE("bin/df", "unix2003") ? "[-t]" : "[-t type]";
(void)fprintf(stderr,
"usage: df [-b | -H | -h | -k | -m | -g | -P] [-ailn] [-T type] %s [filesystem ...]\n", t_flag);
exit(EX_USAGE);
}
char *
makenetvfslist(void)
{
char *str, *strptr, **listptr;
#ifndef __APPLE__
int mib[3], maxvfsconf, cnt=0, i;
size_t miblen;
struct ovfsconf *ptr;
#else
int mib[4], maxvfsconf, cnt=0, i;
size_t miblen;
struct vfsconf vfc;
#endif
mib[0] = CTL_VFS; mib[1] = VFS_GENERIC; mib[2] = VFS_MAXTYPENUM;
miblen=sizeof(maxvfsconf);
if (sysctl(mib, 3,
&maxvfsconf, &miblen, NULL, 0)) {
warn("sysctl failed");
return (NULL);
}
if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
warnx("malloc failed");
return (NULL);
}
#ifndef __APPLE__
for (ptr = getvfsent(); ptr; ptr = getvfsent())
if (ptr->vfc_flags & VFCF_NETWORK) {
listptr[cnt++] = strdup(ptr->vfc_name);
if (listptr[cnt-1] == NULL) {
warnx("malloc failed");
return (NULL);
}
}
#else
miblen = sizeof (struct vfsconf);
mib[2] = VFS_CONF;
for (i = 0; i < maxvfsconf; i++) {
mib[3] = i;
if (sysctl(mib, 4, &vfc, &miblen, NULL, 0) == 0) {
if (!(vfc.vfc_flags & MNT_LOCAL)) {
listptr[cnt++] = strdup(vfc.vfc_name);
if (listptr[cnt-1] == NULL) {
free(listptr);
warnx("malloc failed");
return (NULL);
}
}
}
}
#endif
if (cnt == 0 ||
(str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
if (cnt > 0)
warnx("malloc failed");
free(listptr);
return (NULL);
}
*str = 'n'; *(str + 1) = 'o';
for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
strncpy(strptr, listptr[i], 32);
strptr += strlen(listptr[i]);
*strptr = ',';
free(listptr[i]);
}
*(--strptr) = '\0';
free(listptr);
return (str);
}