>Number:         11208
>Category:       standards
>Synopsis:       POSIX.2: df -P isn't implemented
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    standards-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Oct 12 16:21:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Ben Harris
>Release:        2000-02-07
>Organization:
>Environment:
NetBSD cromarty 1.4X NetBSD 1.4X (CROMARTY) #9: Wed May  3 23:49:51 BST 2000
     bjh21@cromarty:/usr/src/sys/arch/macppc/compile/CROMARTY macppc

>Description:
As mentioned in PR#2893, POSIX.2 specifies that df must accept a
"-P" argument to produce "portable" output.  This output is almost
identical to NetBSD's current output except for the precise wording of the
header line.  NetBSD's current "df" doesn't accept -P.

>How-To-Repeat:
cromarty:~$ df -P
df: illegal option -- P
usage: df [-ikln] [-t type] [file | file_system ...]

>Fix:
This is a first approximation to a fix:

Index: df.c
===================================================================
RCS file: /cvsroot/basesrc/bin/df/df.c,v
retrieving revision 1.34
diff -u -r1.34 df.c
--- df.c        2000/06/26 21:16:16     1.34
+++ df.c        2000/10/12 23:15:46
@@ -79,7 +79,7 @@
 long    regetmntinfo __P((struct statfs **, long));
 void    usage __P((void));
 
-int    aflag, iflag, kflag, lflag, nflag;
+int    aflag, iflag, kflag, lflag, nflag, Pflag;
 char   **typelist = NULL;
 struct ufs_args mdev;
 
@@ -94,7 +94,7 @@
        int ch, i, maxwidth, width;
        char *mntpt;
 
-       while ((ch = getopt(argc, argv, "aiklnt:")) != -1)
+       while ((ch = getopt(argc, argv, "aiklnPt:")) != -1)
                switch (ch) {
                case 'a':
                        aflag = 1;
@@ -111,6 +111,9 @@
                case 'n':
                        nflag = 1;
                        break;
+               case 'P':
+                       Pflag = 1;
+                       break;
                case 't':
                        if (typelist != NULL)
                                errx(1, "only one -t option may be
specified.");
@@ -345,12 +348,13 @@
        if (++timesthrough == 1) {
                if (kflag) {
                        blocksize = 1024;
-                       header = "1K-blocks";
+                       header = Pflag ? "1024-blocks" : "1K-blocks";
                        headerlen = strlen(header);
                } else
                        header = getbsize(&headerlen, &blocksize);
-               (void)printf("%-*.*s %s     Used    Avail Capacity",
-                   maxwidth, maxwidth, "Filesystem", header);
+               (void)printf("%-*.*s %s     Used %8s Capacity",
+                   maxwidth, maxwidth, "Filesystem", header,
+                   Pflag ? "Available" : "Avail");
                if (iflag)
                        (void)printf(" iused   ifree  %%iused");
                (void)printf("  Mounted on\n");
@@ -459,7 +463,7 @@
        extern char *__progname;
 
        (void)fprintf(stderr,
-           "Usage: %s [-aikln] [-t type] [file | file_system ...]\n",
+           "Usage: %s [-aiklnP] [-t type] [file | file_system ...]\n",
            __progname);
        exit(1);
        /* NOTREACHED */

-- 
Ben Harris                                                   <bjh21@netbsd.org>
Portmaster, NetBSD/arm26               <URL:http://www.netbsd.org/Ports/arm26/>


>Release-Note:
>Audit-Trail:
>Unformatted: