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Reclaim memory used for telldir cookies on closedir.

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This commit is contained in:
dfr 1995-01-27 13:51:18 +00:00
parent 10b39986db
commit b5c6599aa4
2 changed files with 30 additions and 0 deletions
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1
lib/libc/gen/closedir.c
View File

@ -55,5 +55,6 @@ closedir(dirp)
dirp->dd_loc = 0;
(void)free((void *)dirp->dd_buf);
(void)free((void *)dirp);
_reclaim_telldir(dirp);
return(close(fd));
}

29
lib/libc/gen/telldir.c
View File

@ -58,6 +58,7 @@ struct ddloc {
long loc_index; /* key associated with structure */
long loc_seek; /* magic cookie returned by getdirentries */
long loc_loc; /* offset of entry in buffer */
DIR* loc_dirp; /* directory which used this entry */
};
#define NDIRHASH 32 /* Num of hash lists, must be a power of 2 */
@ -82,6 +83,7 @@ telldir(dirp)
lp->loc_index = index;
lp->loc_seek = dirp->dd_seek;
lp->loc_loc = dirp->dd_loc;
lp->loc_dirp = dirp;
lp->loc_next = dd_hash[LOCHASH(index)];
dd_hash[LOCHASH(index)] = lp;
return (index);
@ -126,3 +128,30 @@ found:
free((caddr_t)lp);
#endif
}
/*
* Reclaim memory for telldir cookies which weren't used.
*/
void
_reclaim_telldir(dirp)
register DIR *dirp;
{
register struct ddloc *lp;
register struct ddloc **prevlp;
int i;
for (i = 0; i < NDIRHASH; i++) {
prevlp = &dd_hash[i];
lp = *prevlp;
while (lp != NULL) {
if (lp->loc_dirp == dirp) {
*prevlp = lp->loc_next;
free((caddr_t)lp);
lp = *prevlp;
continue;
}
prevlp = &lp->loc_next;
lp = lp->loc_next;
}
}
}