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Implement commonio_append.

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To support files that do not have a simple unique key implement
commonio_append to allow new entries to be added.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2013-01-22 01:13:26 -08:00 committed by Serge Hallyn
parent 23fd6cb1da
commit 5620c5ab5d
2 changed files with 31 additions and 0 deletions
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30
lib/commonio.c
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@ -1113,6 +1113,36 @@ int commonio_update (struct commonio_db *db, const void *eptr)
return 1; return 1;
} }
int commonio_append (struct commonio_db *db, const void *eptr)
{
struct commonio_entry *p;
void *nentry;
if (!db->isopen || db->readonly) {
errno = EINVAL;
return 0;
}
nentry = db->ops->dup (eptr);
if (NULL == nentry) {
errno = ENOMEM;
return 0;
}
/* new entry */
p = (struct commonio_entry *) malloc (sizeof *p);
if (NULL == p) {
db->ops->free (nentry);
errno = ENOMEM;
return 0;
}
p->eptr = nentry;
p->line = NULL;
p->changed = true;
add_one_entry (db, p);
db->changed = true;
return 1;
}
void commonio_del_entry (struct commonio_db *db, const struct commonio_entry *p) void commonio_del_entry (struct commonio_db *db, const struct commonio_entry *p)
{ {

1
lib/commonio.h
View File

@ -146,6 +146,7 @@ extern int commonio_lock_nowait (struct commonio_db *, bool log);
extern int commonio_open (struct commonio_db *, int); extern int commonio_open (struct commonio_db *, int);
extern /*@observer@*/ /*@null@*/const void *commonio_locate (struct commonio_db *, const char *); extern /*@observer@*/ /*@null@*/const void *commonio_locate (struct commonio_db *, const char *);
extern int commonio_update (struct commonio_db *, const void *); extern int commonio_update (struct commonio_db *, const void *);
extern int commonio_append (struct commonio_db *, const void *);
extern int commonio_remove (struct commonio_db *, const char *); extern int commonio_remove (struct commonio_db *, const char *);
extern int commonio_rewind (struct commonio_db *); extern int commonio_rewind (struct commonio_db *);
extern /*@observer@*/ /*@null@*/const void *commonio_next (struct commonio_db *); extern /*@observer@*/ /*@null@*/const void *commonio_next (struct commonio_db *);