* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
static char sccsid
[] = "@(#)nlist.c 8.1 (Berkeley) 6/6/93";
typedef struct nlist NLIST
;
#define _strx n_un.n_strx
#define _name n_un.n_name
#define badfmt(str) errx(1, "%s: %s: %s", kfile, str, strerror(EFTYPE))
static void badread
__P((int, char *));
if ((fd
= open(name
, O_RDONLY
, 0)) < 0)
/* Read in exec structure. */
nr
= read(fd
, &ebuf
, sizeof(struct exec
));
if (nr
!= sizeof(struct exec
))
badfmt("no exec header");
/* Check magic number and symbol count. */
badfmt("bad magic number");
/* Seek to string table. */
if (lseek(fd
, N_STROFF(ebuf
), SEEK_SET
) == -1)
badfmt("corrupted string table");
/* Read in the size of the symbol table. */
nr
= read(fd
, (char *)&strsize
, sizeof(strsize
));
if (nr
!= sizeof(strsize
))
badread(nr
, "no symbol table");
/* Read in the string table. */
strsize
-= sizeof(strsize
);
if (!(strtab
= malloc(strsize
)))
if ((nr
= read(fd
, strtab
, strsize
)) != strsize
)
badread(nr
, "corrupted symbol table");
/* Seek to symbol table. */
if (!(fp
= fdopen(fd
, "r")))
if (fseek(fp
, N_SYMOFF(ebuf
), SEEK_SET
) == -1)
data
.data
= (u_char
*)&nbuf
;
data
.size
= sizeof(NLIST
);
/* Read each symbol and enter it into the database. */
nsyms
= ebuf
.a_syms
/ sizeof(struct nlist
);
if (fread((char *)&nbuf
, sizeof (NLIST
), 1, fp
) != 1) {
badfmt("corrupted symbol table");
if (!nbuf
._strx
|| nbuf
.n_type
&N_STAB
)
key
.data
= (u_char
*)strtab
+ nbuf
._strx
- sizeof(long);
key
.size
= strlen((char *)key
.data
);
if (db
->put(db
, &key
, &data
, 0))
if (strcmp((char *)key
.data
, VRS_SYM
) == 0) {
#define KERNTEXTOFF KERNBASE
* Calculate offset relative to a normal (non-kernel)
* a.out. KERNTEXTOFF is where the kernel is really
* loaded; N_TXTADDR is where a normal file is loaded.
* From there, locate file offset in text or data.
voff
= nbuf
.n_value
- KERNTEXTOFF
+ N_TXTADDR(ebuf
);
if ((nbuf
.n_type
& N_TYPE
) == N_TEXT
)
voff
+= N_TXTOFF(ebuf
) - N_TXTADDR(ebuf
);
voff
+= N_DATOFF(ebuf
) - N_DATADDR(ebuf
);
if (fseek(fp
, voff
, SEEK_SET
) == -1)
badfmt("corrupted string table");
* Read version string up to, and including newline.
* This code assumes that a newline terminates the
if (fgets(buf
, sizeof(buf
), fp
) == NULL
)
badfmt("corrupted string table");
key
.data
= (u_char
*)VRS_KEY
;
key
.size
= sizeof(VRS_KEY
) - 1;
data
.data
= (u_char
*)buf
;
if (db
->put(db
, &key
, &data
, 0))
/* Restore to original values. */
data
.data
= (u_char
*)&nbuf
;
data
.size
= sizeof(NLIST
);
if (fseek(fp
, cur_off
, SEEK_SET
) == -1)
badfmt("corrupted string table");