#pragma ident "@(#)rawdata.c 1.13 08/05/31 SMI"
#include <stdlib.h>
#include "libelf.h"
#include "decl.h"
#include "msg.h"
Elf_Data *
elf_rawdata(Elf_Scn * scn, Elf_Data * data)
{
Dnode * d = (Dnode *)data;
Dnode * raw;
Elf_Data * rc;
Elf * elf;
if (scn == 0)
return (0);
elf = scn->s_elf;
READLOCKS(elf, scn)
if ((scn->s_myflags & SF_READY) == 0) {
UPGRADELOCKS(elf, scn)
if ((scn->s_myflags & SF_READY) == 0)
(void) _elf_cookscn(scn);
DOWNGRADELOCKS(elf, scn)
}
if (d == 0)
d = scn->s_hdnode;
else
d = d->db_next;
if (d == 0) {
READUNLOCKS(elf, scn)
return (0);
}
if (d->db_scn != scn) {
_elf_seterr(EREQ_DATA, 0);
READUNLOCKS(elf, scn)
return (0);
}
if (d->db_raw != 0) {
rc = &d->db_raw->db_data;
READUNLOCKS(elf, scn)
return (rc);
}
if ((raw = _elf_dnode()) == 0) {
READUNLOCKS(elf, scn)
return (0);
}
raw->db_myflags |= DBF_READY;
if ((d->db_off == 0) || (d->db_fsz == 0)) {
d->db_raw = raw;
raw->db_data.d_size = d->db_shsz;
rc = &raw->db_data;
READUNLOCKS(elf, scn)
return (rc);
}
if ((d->db_off < 0) ||
(d->db_off >= elf->ed_fsz) ||
(elf->ed_fsz - d->db_off < d->db_fsz)) {
_elf_seterr(EFMT_DATA, 0);
free(raw);
READUNLOCKS(elf, scn)
return (0);
}
raw->db_data.d_size = d->db_fsz;
if (elf->ed_raw != 0) {
raw->db_data.d_buf = (Elf_Void *)(elf->ed_raw + d->db_off);
d->db_raw = raw;
rc = &raw->db_data;
READUNLOCKS(elf, scn)
return (rc);
}
raw->db_buf = (Elf_Void *)_elf_read(elf->ed_fd,
elf->ed_baseoff + d->db_off, d->db_fsz);
if (raw->db_buf == 0) {
free(raw);
READUNLOCKS(elf, scn)
return (0);
}
raw->db_data.d_buf = raw->db_buf;
d->db_raw = raw;
rc = &raw->db_data;
READUNLOCKS(elf, scn)
return (rc);
}