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1 static char sccsid[] = "@(#)readdir.c 4.1 (Berkeley) 83/03/21";
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2
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3 #include <sys/types.h>
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4 #include <dir.h>
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5
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6 /*
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7 * read an old stlye directory entry and present it as a new one
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8 */
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9 #define ODIRSIZ 14
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10
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11 struct olddirect {
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12 ino_t od_ino;
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13 char od_name[ODIRSIZ];
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14 };
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15
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16 /*
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17 * get next entry in a directory.
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18 */
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19 struct direct *
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20 readdir(dirp)
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21 register DIR *dirp;
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22 {
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23 register struct olddirect *dp;
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24 static struct direct dir;
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25
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26 for (;;) {
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27 if (dirp->dd_loc == 0) {
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28 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf,
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29 DIRBLKSIZ);
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30 if (dirp->dd_size <= 0)
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31 return NULL;
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32 }
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33 if (dirp->dd_loc >= dirp->dd_size) {
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34 dirp->dd_loc = 0;
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35 continue;
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36 }
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37 dp = (struct olddirect *)(dirp->dd_buf + dirp->dd_loc);
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38 dirp->dd_loc += sizeof(struct olddirect);
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39 if (dp->od_ino == 0)
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40 continue;
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41 dir.d_ino = dp->od_ino;
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42 strncpy(dir.d_name, dp->od_name, ODIRSIZ);
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43 dir.d_name[ODIRSIZ] = '\0'; /* insure null termination */
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44 dir.d_namlen = strlen(dir.d_name);
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45 dir.d_reclen = DIRBLKSIZ;
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46 return (&dir);
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47 }
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48 }
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