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Add krb5_storage_truncate

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@24226 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2009-01-11 21:39:41 +00:00
parent c85a02340e
commit a54887f054
4 changed files with 52 additions and 0 deletions
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20
lib/krb5/store_mem.c
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@@ -93,6 +93,24 @@ mem_seek(krb5_storage *sp, off_t offset, int whence)
return s->ptr - s->base;
}
static ssize_t
mem_trunc(krb5_storage *sp, size_t offset)
{
mem_storage *s = (mem_storage*)sp->data;
if(offset > s->size)
return ERANGE;
s->size = offset;
if ((s->ptr - s->base) > offset)
s->ptr = s->base + offset;
return 0;
}
static krb5_error_code
mem_no_trunc(krb5_storage *sp, off_t offset)
{
return EINVAL;
}
krb5_storage * KRB5_LIB_FUNCTION
krb5_storage_from_mem(void *buf, size_t len)
{
@@ -114,6 +132,7 @@ krb5_storage_from_mem(void *buf, size_t len)
sp->fetch = mem_fetch;
sp->store = mem_store;
sp->seek = mem_seek;
sp->trunc = mem_trunc;
sp->free = NULL;
return sp;
}
@@ -145,6 +164,7 @@ krb5_storage_from_readonly_mem(const void *buf, size_t len)
sp->fetch = mem_fetch;
sp->store = mem_no_store;
sp->seek = mem_seek;
sp->trunc = mem_no_trunc;
sp->free = NULL;
return sp;
}