Annotation of src/usr.bin/size/size.c, Revision 1.9
1.9 ! niklas 1: /* $OpenBSD: size.c,v 1.8 1997/09/11 11:21:52 deraadt Exp $ */
1.2 deraadt 2: /* $NetBSD: size.c,v 1.7 1996/01/14 23:07:12 pk Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1988, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1988, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)size.c 8.2 (Berkeley) 12/9/93";
46: #endif
1.9 ! niklas 47: static char rcsid[] = "$OpenBSD: size.c,v 1.8 1997/09/11 11:21:52 deraadt Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: #include <sys/param.h>
51: #include <sys/file.h>
52: #include <a.out.h>
1.2 deraadt 53: #include <ar.h>
54: #include <ranlib.h>
1.1 deraadt 55: #include <unistd.h>
56: #include <stdlib.h>
57: #include <stdio.h>
1.8 deraadt 58: #include <string.h>
59: #include <ctype.h>
1.1 deraadt 60: #include <err.h>
1.9 ! niklas 61:
! 62: #ifdef MID_MACHINE_OVERRIDE
! 63: #undef MID_MACHINE
! 64: #define MID_MACHINE MID_MACHINE_OVERRIDE
! 65: #endif
1.1 deraadt 66:
1.6 deraadt 67: unsigned long total_text, total_data, total_bss, total_total;
1.2 deraadt 68: int ignore_bad_archive_entries = 1;
1.6 deraadt 69: int print_totals = 0;
1.2 deraadt 70:
71: int process_file __P((int, char *));
72: int show_archive __P((int, char *, FILE *));
1.8 deraadt 73: int show_objfile __P((int, char *, FILE *));
1.2 deraadt 74: int show_object __P((int, char *, FILE *));
75: void *emalloc __P((size_t));
76: void *erealloc __P((void *, size_t));
1.1 deraadt 77: void usage __P((void));
78:
79: int
80: main(argc, argv)
81: int argc;
82: char *argv[];
83: {
84: int ch, eval;
85:
1.6 deraadt 86: while ((ch = getopt(argc, argv, "wt")) != -1)
1.1 deraadt 87: switch(ch) {
1.2 deraadt 88: case 'w':
89: ignore_bad_archive_entries = 0;
90: break;
1.6 deraadt 91: case 't':
92: print_totals = 1;
93: break;
1.1 deraadt 94: case '?':
95: default:
96: usage();
97: }
98: argc -= optind;
99: argv += optind;
100:
101: eval = 0;
102: if (*argv)
103: do {
1.2 deraadt 104: eval |= process_file(argc, *argv);
1.1 deraadt 105: } while (*++argv);
106: else
1.2 deraadt 107: eval |= process_file(1, "a.out");
1.6 deraadt 108:
109: if (print_totals)
110: (void)printf("\n%lu\t%lu\t%lu\t%lu\t%lx\tTOTAL\n",
111: total_text, total_data, total_bss,
112: total_total, total_total);
1.1 deraadt 113: exit(eval);
114: }
115:
1.2 deraadt 116: /*
117: * process_file()
118: * show symbols in the file given as an argument. Accepts archive and
119: * object files as input.
120: */
121: int
122: process_file(count, fname)
123: int count;
124: char *fname;
125: {
126: struct exec exec_head;
127: FILE *fp;
128: int retval;
129: char magic[SARMAG];
1.6 deraadt 130:
1.2 deraadt 131: if (!(fp = fopen(fname, "r"))) {
132: warnx("cannot read %s", fname);
133: return(1);
134: }
135:
136: /*
137: * first check whether this is an object file - read a object
138: * header, and skip back to the beginning
139: */
140: if (fread((char *)&exec_head, sizeof(exec_head), (size_t)1, fp) != 1) {
141: warnx("%s: bad format", fname);
142: (void)fclose(fp);
143: return(1);
144: }
145: rewind(fp);
146:
147: /* this could be an archive */
148: if (N_BADMAG(exec_head)) {
149: if (fread(magic, sizeof(magic), (size_t)1, fp) != 1 ||
150: strncmp(magic, ARMAG, SARMAG)) {
151: warnx("%s: not object file or archive", fname);
152: (void)fclose(fp);
153: return(1);
154: }
155: retval = show_archive(count, fname, fp);
156: } else
157: retval = show_objfile(count, fname, fp);
158: (void)fclose(fp);
159: return(retval);
160: }
161:
162: /*
163: * show_archive()
164: * show symbols in the given archive file
165: */
1.1 deraadt 166: int
1.2 deraadt 167: show_archive(count, fname, fp)
168: int count;
169: char *fname;
170: FILE *fp;
171: {
172: struct ar_hdr ar_head;
173: struct exec exec_head;
174: int i, rval;
175: long last_ar_off;
176: char *p, *name;
177: int baselen, namelen;
178:
179: baselen = strlen(fname) + 3;
180: namelen = sizeof(ar_head.ar_name);
181: name = emalloc(baselen + namelen);
182:
183: rval = 0;
184:
185: /* while there are more entries in the archive */
186: while (fread((char *)&ar_head, sizeof(ar_head), (size_t)1, fp) == 1) {
187: /* bad archive entry - stop processing this archive */
188: if (strncmp(ar_head.ar_fmag, ARFMAG, sizeof(ar_head.ar_fmag))) {
189: warnx("%s: bad format archive header", fname);
190: (void)free(name);
191: return(1);
192: }
193:
194: /* remember start position of current archive object */
195: last_ar_off = ftell(fp);
196:
197: /* skip ranlib entries */
198: if (!strncmp(ar_head.ar_name, RANLIBMAG, sizeof(RANLIBMAG) - 1))
199: goto skip;
200:
201: /*
202: * construct a name of the form "archive.a:obj.o:" for the
203: * current archive entry if the object name is to be printed
204: * on each output line
205: */
206: p = name;
207: if (count > 1)
208: p += sprintf(p, "%s:", fname);
209: #ifdef AR_EFMT1
210: /*
211: * BSD 4.4 extended AR format: #1/<namelen>, with name as the
212: * first <namelen> bytes of the file
213: */
214: if ( (ar_head.ar_name[0] == '#') &&
215: (ar_head.ar_name[1] == '1') &&
216: (ar_head.ar_name[2] == '/') &&
217: (isdigit(ar_head.ar_name[3]))) {
218:
219: int len = atoi(&ar_head.ar_name[3]);
220: if (len > namelen) {
221: p -= (long)name;
222: name = (char *)erealloc(name, baselen+len);
223: namelen = len;
224: p += (long)name;
225: }
226: if (fread(p, len, 1, fp) != 1) {
227: (void)fprintf(stderr,
228: "nm: %s: premature EOF.\n", name);
229: (void)free(name);
230: return 1;
231: }
232: p += len;
233: } else
234: #endif
235: for (i = 0; i < sizeof(ar_head.ar_name); ++i)
236: if (ar_head.ar_name[i] && ar_head.ar_name[i] != ' ')
237: *p++ = ar_head.ar_name[i];
238: *p++ = '\0';
239:
240: /* get and check current object's header */
241: if (fread((char *)&exec_head, sizeof(exec_head),
242: (size_t)1, fp) != 1) {
243: warnx("%s: premature EOF", name);
244: (void)free(name);
245: return(1);
246: }
247:
248: if (N_BADMAG(exec_head)) {
249: if (!ignore_bad_archive_entries) {
250: warnx("%s: bad format", name);
251: rval = 1;
252: }
1.4 deraadt 253: } else if (N_GETMID(exec_head) != MID_MACHINE) {
254: if (!ignore_bad_archive_entries) {
255: warnx("%s: wrong architecture", name);
256: rval = 1;
257: }
1.2 deraadt 258: } else {
259: (void)fseek(fp, (long)-sizeof(exec_head),
260: SEEK_CUR);
261: rval |= show_objfile(2, name, fp);
262: }
263:
264: /*
265: * skip to next archive object - it starts at the next
266: * even byte boundary
267: */
268: #define even(x) (((x) + 1) & ~1)
269: skip: if (fseek(fp, last_ar_off + even(atol(ar_head.ar_size)),
270: SEEK_SET)) {
271: warn("%s", fname);
272: (void)free(name);
273: return(1);
274: }
275: }
276: (void)free(name);
277: return(rval);
278: }
279:
280: int
281: show_objfile(count, name, fp)
1.1 deraadt 282: int count;
283: char *name;
1.2 deraadt 284: FILE *fp;
1.1 deraadt 285: {
286: static int first = 1;
287: struct exec head;
288: u_long total;
289:
1.2 deraadt 290: if (fread((char *)&head, sizeof(head), (size_t)1, fp) != 1) {
291: warnx("%s: cannot read header", name);
292: return(1);
293: }
294:
295: if (N_BADMAG(head)) {
296: warnx("%s: bad format", name);
1.4 deraadt 297: return(1);
298: }
299:
300: if (N_GETMID(head) != MID_MACHINE) {
301: warnx("%s: wrong architecture", name);
1.2 deraadt 302: return(1);
1.1 deraadt 303: }
304:
305: if (first) {
306: first = 0;
307: (void)printf("text\tdata\tbss\tdec\thex\n");
308: }
309: total = head.a_text + head.a_data + head.a_bss;
310: (void)printf("%lu\t%lu\t%lu\t%lu\t%lx", head.a_text, head.a_data,
311: head.a_bss, total, total);
312: if (count > 1)
313: (void)printf("\t%s", name);
1.6 deraadt 314:
315: total_text += head.a_text;
316: total_data += head.a_data;
317: total_bss += head.a_bss;
318: total_total += total;
319:
1.1 deraadt 320: (void)printf("\n");
321: return (0);
322: }
323:
1.2 deraadt 324: void *
325: emalloc(size)
326: size_t size;
327: {
328: char *p;
329:
330: /* NOSTRICT */
1.8 deraadt 331: if ((p = malloc(size)))
1.2 deraadt 332: return(p);
333: err(1, NULL);
334: }
335:
336: void *
337: erealloc(p, size)
338: void *p;
339: size_t size;
340: {
341: /* NOSTRICT */
1.8 deraadt 342: if ((p = realloc(p, size)))
1.2 deraadt 343: return(p);
344: err(1, NULL);
345: }
346:
1.1 deraadt 347: void
348: usage()
349: {
1.7 mickey 350: (void)fprintf(stderr, "usage: size [-tw] [file ...]\n");
1.1 deraadt 351: exit(1);
352: }
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