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* libio/fmemopen.c (fmemopen_seek): SEEK_END should count from
	maximum used address, not maximum buffer position.
This commit is contained in:
Ulrich Drepper
2005-01-06 02:09:15 +00:00
parent 1e7cceb99e
commit 1b99d99f0e
3 changed files with 84 additions and 2 deletions
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16
libio/fmemopen.c
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@ -164,7 +164,7 @@ fmemopen_seek (void *cookie, _IO_off64_t *p, int w)
break;
case SEEK_END:
np = c->size - *p;
np = c->maxpos - *p;
break;
default:
@ -201,6 +201,13 @@ fmemopen (void *buf, size_t len, const char *mode)
cookie_io_functions_t iof;
fmemopen_cookie_t *c;
if (len == 0)
{
einval:
__set_errno (EINVAL);
return NULL;
}
c = (fmemopen_cookie_t *) malloc (sizeof (fmemopen_cookie_t));
if (c == NULL)
return NULL;
@ -218,7 +225,12 @@ fmemopen (void *buf, size_t len, const char *mode)
c->buffer[0] = '\0';
}
else
c->buffer = buf;
{
if ((uintptr_t) len > -(uintptr_t) buf)
goto einval;
c->buffer = buf;
}
c->size = len;