127 lines
2.5 KiB
C
127 lines
2.5 KiB
C
#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)fstab.c 1.1 92/07/30 SMI"; /* from UCB 4.4 83/06/19 */
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#endif
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#include <fstab.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <mntent.h>
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static struct fstab *pfs;
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static FILE *fs_file;
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static
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fstabscan(fs)
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struct fstab *fs;
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{
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struct mntent *mnt;
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/* skip over all filesystem types except '4.2', 'swap' & 'ignore' */
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while (((mnt = getmntent(fs_file)) != NULL) &&
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!((strcmp(mnt->mnt_type, MNTTYPE_42) == 0) ||
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(strcmp(mnt->mnt_type, MNTTYPE_SWAP) == 0) ||
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(strcmp(mnt->mnt_type, MNTTYPE_IGNORE) == 0)))
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continue;
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if (mnt == NULL)
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return (EOF);
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fs->fs_spec = mnt->mnt_fsname;
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fs->fs_file = mnt->mnt_dir;
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if (strcmp(mnt->mnt_type, MNTTYPE_IGNORE) == 0) {
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strcpy(mnt->mnt_opts, FSTAB_XX);
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} else if (strcmp(mnt->mnt_type, MNTTYPE_SWAP) == 0) {
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strcpy(mnt->mnt_opts, FSTAB_SW);
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} else if (hasmntopt(mnt, MNTOPT_RO)) {
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strcpy(mnt->mnt_opts, FSTAB_RO);
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} else if (hasmntopt(mnt, MNTOPT_QUOTA)) {
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strcpy(mnt->mnt_opts, FSTAB_RQ);
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} else {
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strcpy(mnt->mnt_opts, FSTAB_RW);
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}
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fs->fs_type = mnt->mnt_opts;
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fs->fs_freq = mnt->mnt_freq;
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fs->fs_passno = mnt->mnt_passno;
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return (5);
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}
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setfsent()
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{
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if (fs_file)
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endfsent();
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if ((fs_file = setmntent(FSTAB, "r")) == NULL) {
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fs_file = 0;
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return (0);
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}
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return (1);
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}
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endfsent()
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{
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if (fs_file) {
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endmntent(fs_file);
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fs_file = 0;
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}
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return (1);
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}
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struct fstab *
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getfsent()
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{
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int nfields;
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if ((fs_file == 0) && (setfsent() == 0))
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return ((struct fstab *)0);
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if (pfs == 0) {
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pfs = (struct fstab *)malloc(sizeof (struct fstab));
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if (pfs == 0)
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return (0);
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}
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nfields = fstabscan(pfs);
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if (nfields == EOF || nfields != 5)
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return ((struct fstab *)0);
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return (pfs);
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}
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struct fstab *
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getfsspec(name)
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char *name;
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{
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register struct fstab *fsp;
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if (setfsent() == 0) /* start from the beginning */
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return ((struct fstab *)0);
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while((fsp = getfsent()) != 0)
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if (strcmp(fsp->fs_spec, name) == 0)
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return (fsp);
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return ((struct fstab *)0);
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}
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struct fstab *
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getfsfile(name)
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char *name;
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{
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register struct fstab *fsp;
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if (setfsent() == 0) /* start from the beginning */
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return ((struct fstab *)0);
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while ((fsp = getfsent()) != 0)
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if (strcmp(fsp->fs_file, name) == 0)
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return (fsp);
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return ((struct fstab *)0);
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}
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struct fstab *
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getfstype(type)
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char *type;
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{
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register struct fstab *fs;
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if (setfsent() == 0)
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return ((struct fstab *)0);
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while ((fs = getfsent()) != 0)
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if (strcmp(fs->fs_type, type) == 0)
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return (fs);
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return ((struct fstab *)0);
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}
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