Merged from Lite2. The -t option is now handled better. The only visible
change should be that the usage message now actually matches the man page.
This commit is contained in:
Bruce Evans
parent
611d129630
commit
a78192e3c3
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=23852
141
bin/df/df.c
141
bin/df/df.c
@ -51,6 +51,7 @@ static char const sccsid[] = "@(#)df.c 8.9 (Berkeley) 5/8/95";
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include <ufs/ufs/ufsmount.h>
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#include <err.h>
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#include <errno.h>
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@ -59,61 +60,17 @@ static char const sccsid[] = "@(#)df.c 8.9 (Berkeley) 5/8/95";
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <ufs/ufs/ufsmount.h>
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/* XXX assumes MOUNT_MAXTYPE < 32 */
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#define MT(m) (1 << (m))
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int checkvfsname __P((const char *, char **));
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char **makevfslist __P((char *));
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long regetmntinfo __P((struct statfs **, long, char **));
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int bread __P((off_t, void *, int));
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char *getmntpt __P((char *));
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void prtstat __P((struct statfs *, int));
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void ufs_df __P((char *, int));
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void usage __P((void));
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/* fixed values */
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#define MT_NONE (0)
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#define MT_ALL (MT(MOUNT_MAXTYPE+1)-1)
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/* subject to change */
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#define MT_LOCAL \
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(MT(MOUNT_UFS)|MT(MOUNT_MFS)|MT(MOUNT_LFS)|MT(MOUNT_MSDOS)|MT(MOUNT_CD9660))
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#define MT_DEFAULT MT_ALL
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struct typetab {
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char *str;
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long types;
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} typetab[] = {
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{"ufs", MT(MOUNT_UFS)},
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{"local", MT_LOCAL},
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{"all", MT_ALL},
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{"nfs", MT(MOUNT_NFS)},
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{"mfs", MT(MOUNT_MFS)},
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{"lfs", MT(MOUNT_LFS)},
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{"msdos", MT(MOUNT_MSDOS)},
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{"fdesc", MT(MOUNT_FDESC)},
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{"portal", MT(MOUNT_PORTAL)},
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#if 0
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/* return fsid of underlying FS */
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{"lofs", MT(MOUNT_LOFS)},
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{"null", MT(MOUNT_NULL)},
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{"umap", MT(MOUNT_UMAP)},
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#endif
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{"kernfs", MT(MOUNT_KERNFS)},
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{"procfs", MT(MOUNT_PROCFS)},
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{"afs", MT(MOUNT_AFS)},
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{"iso9660fs", MT(MOUNT_CD9660)},
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{"isofs", MT(MOUNT_CD9660)},
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{"cd9660", MT(MOUNT_CD9660)},
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{"cdfs", MT(MOUNT_CD9660)},
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{"misc", MT(MOUNT_LOFS)|MT(MOUNT_FDESC)|MT(MOUNT_PORTAL)|
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MT(MOUNT_KERNFS)|MT(MOUNT_PROCFS)},
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{NULL, 0}
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};
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long addtype __P((long, char *));
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long regetmntinfo __P((struct statfs **, long, long));
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int bread __P((off_t, void *, int));
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char *getmntpt __P((char *));
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void prtstat __P((struct statfs *, int));
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void ufs_df __P((char *, int));
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void usage __P((void));
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int iflag, nflag, tflag;
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int iflag, nflag;
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struct ufs_args mdev;
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int
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@ -123,13 +80,11 @@ main(argc, argv)
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{
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struct stat stbuf;
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struct statfs statfsbuf, *mntbuf;
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long fsmask, mntsize;
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long mntsize;
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int ch, err, i, maxwidth, width;
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char *mntpt;
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iflag = nflag = tflag = 0;
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fsmask = MT_NONE;
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char *mntpt, **vfslist;
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vfslist = NULL;
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while ((ch = getopt(argc, argv, "iknt:")) != EOF)
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switch (ch) {
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case 'i':
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@ -142,8 +97,9 @@ main(argc, argv)
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nflag = 1;
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break;
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case 't':
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fsmask = addtype(fsmask, optarg);
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tflag = 1;
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if (vfslist != NULL)
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errx(1, "only one -t option may be specified.");
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vfslist = makevfslist(optarg);
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break;
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case '?':
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default:
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@ -161,10 +117,8 @@ main(argc, argv)
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}
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if (!*argv) {
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if (!tflag)
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fsmask = MT_DEFAULT;
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mntsize = regetmntinfo(&mntbuf, mntsize, fsmask);
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if (fsmask != MT_ALL) {
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mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
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if (vfslist != NULL) {
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maxwidth = 0;
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for (i = 0; i < mntsize; i++) {
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width = strlen(mntbuf[i].f_mntfromname);
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@ -195,7 +149,7 @@ main(argc, argv)
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warn("%s", mntpt);
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continue;
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}
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if (mount(MOUNT_UFS, mntpt, MNT_RDONLY,
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if (mount("ufs", mntpt, MNT_RDONLY,
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&mdev) != 0) {
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ufs_df(*argv, maxwidth);
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(void)rmdir(mntpt);
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@ -241,55 +195,32 @@ getmntpt(name)
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return (0);
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}
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long
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addtype(omask, str)
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long omask;
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char *str;
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{
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struct typetab *tp;
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/*
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* If it is one of our known types, add it to the current mask
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*/
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for (tp = typetab; tp->str; tp++)
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if (strcmp(str, tp->str) == 0)
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return (tp->types | (tflag ? omask : MT_NONE));
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/*
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* See if it is the negation of one of the known values
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*/
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if (strlen(str) > 2 && str[0] == 'n' && str[1] == 'o')
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for (tp = typetab; tp->str; tp++)
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if (strcmp(str+2, tp->str) == 0)
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return (~tp->types & (tflag ? omask : MT_ALL));
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errx(1, "unknown type `%s'", str);
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}
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/*
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* Make a pass over the filesystem info in ``mntbuf'' filtering out
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* filesystem types not in ``fsmask'' and possibly re-stating to get
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* filesystem types not in vfslist and possibly re-stating to get
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* current (not cached) info. Returns the new count of valid statfs bufs.
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*/
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long
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regetmntinfo(mntbufp, mntsize, fsmask)
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regetmntinfo(mntbufp, mntsize, vfslist)
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struct statfs **mntbufp;
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long mntsize, fsmask;
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long mntsize;
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char **vfslist;
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{
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int i, j;
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struct statfs *mntbuf;
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if (fsmask == MT_ALL)
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if (vfslist == NULL)
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return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
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mntbuf = *mntbufp;
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j = 0;
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for (i = 0; i < mntsize; i++) {
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if (fsmask & MT(mntbuf[i].f_type)) {
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if (!nflag)
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(void)statfs(mntbuf[i].f_mntonname,&mntbuf[j]);
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else if (i != j)
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mntbuf[j] = mntbuf[i];
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j++;
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}
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for (j = 0, i = 0; i < mntsize; i++) {
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if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
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continue;
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if (!nflag)
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(void)statfs(mntbuf[i].f_mntonname,&mntbuf[j]);
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else if (i != j)
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mntbuf[j] = mntbuf[i];
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j++;
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}
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return (j);
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}
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@ -348,6 +279,7 @@ prtstat(sfsp, maxwidth)
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* This code constitutes the pre-system call Berkeley df code for extracting
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* information from filesystem superblocks.
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*/
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <errno.h>
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#include <fstab.h>
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@ -382,7 +314,8 @@ ufs_df(file, maxwidth)
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return;
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}
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sfsp = &statfsbuf;
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sfsp->f_type = MOUNT_UFS;
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sfsp->f_type = 1;
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strcpy(sfsp->f_fstypename, "ufs");
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sfsp->f_flags = 0;
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sfsp->f_bsize = sblock.fs_fsize;
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sfsp->f_iosize = sblock.fs_bsize;
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@ -424,7 +357,7 @@ bread(off, buf, cnt)
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void
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usage()
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{
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fprintf(stderr,
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"usage: df [-ikn] [-t fstype] [file | file_system ...]\n");
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(void)fprintf(stderr,
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"usage: df [-ikn] [-t type] [file | filesystem ...]\n");
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exit(1);
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}
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