Annotation of src/usr.bin/size/size.c, Revision 1.8
1.8 ! deraadt 1: /* $OpenBSD: size.c,v 1.7 1997/08/23 01:59:21 mickey 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
1.8 ! deraadt 47: static char rcsid[] = "$OpenBSD: size.c,v 1.7 1997/08/23 01:59:21 mickey 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>
61:
1.6 deraadt 62: unsigned long total_text, total_data, total_bss, total_total;
1.2 deraadt 63: int ignore_bad_archive_entries = 1;
1.6 deraadt 64: int print_totals = 0;
1.2 deraadt 65:
66: int process_file __P((int, char *));
67: int show_archive __P((int, char *, FILE *));
1.8 ! deraadt 68: int show_objfile __P((int, char *, FILE *));
1.2 deraadt 69: int show_object __P((int, char *, FILE *));
70: void *emalloc __P((size_t));
71: void *erealloc __P((void *, size_t));
1.1 deraadt 72: void usage __P((void));
73:
74: int
75: main(argc, argv)
76: int argc;
77: char *argv[];
78: {
79: int ch, eval;
80:
1.6 deraadt 81: while ((ch = getopt(argc, argv, "wt")) != -1)
1.1 deraadt 82: switch(ch) {
1.2 deraadt 83: case 'w':
84: ignore_bad_archive_entries = 0;
85: break;
1.6 deraadt 86: case 't':
87: print_totals = 1;
88: break;
1.1 deraadt 89: case '?':
90: default:
91: usage();
92: }
93: argc -= optind;
94: argv += optind;
95:
96: eval = 0;
97: if (*argv)
98: do {
1.2 deraadt 99: eval |= process_file(argc, *argv);
1.1 deraadt 100: } while (*++argv);
101: else
1.2 deraadt 102: eval |= process_file(1, "a.out");
1.6 deraadt 103:
104: if (print_totals)
105: (void)printf("\n%lu\t%lu\t%lu\t%lu\t%lx\tTOTAL\n",
106: total_text, total_data, total_bss,
107: total_total, total_total);
1.1 deraadt 108: exit(eval);
109: }
110:
1.2 deraadt 111: /*
112: * process_file()
113: * show symbols in the file given as an argument. Accepts archive and
114: * object files as input.
115: */
116: int
117: process_file(count, fname)
118: int count;
119: char *fname;
120: {
121: struct exec exec_head;
122: FILE *fp;
123: int retval;
124: char magic[SARMAG];
1.6 deraadt 125:
1.2 deraadt 126: if (!(fp = fopen(fname, "r"))) {
127: warnx("cannot read %s", fname);
128: return(1);
129: }
130:
131: /*
132: * first check whether this is an object file - read a object
133: * header, and skip back to the beginning
134: */
135: if (fread((char *)&exec_head, sizeof(exec_head), (size_t)1, fp) != 1) {
136: warnx("%s: bad format", fname);
137: (void)fclose(fp);
138: return(1);
139: }
140: rewind(fp);
141:
142: /* this could be an archive */
143: if (N_BADMAG(exec_head)) {
144: if (fread(magic, sizeof(magic), (size_t)1, fp) != 1 ||
145: strncmp(magic, ARMAG, SARMAG)) {
146: warnx("%s: not object file or archive", fname);
147: (void)fclose(fp);
148: return(1);
149: }
150: retval = show_archive(count, fname, fp);
151: } else
152: retval = show_objfile(count, fname, fp);
153: (void)fclose(fp);
154: return(retval);
155: }
156:
157: /*
158: * show_archive()
159: * show symbols in the given archive file
160: */
1.1 deraadt 161: int
1.2 deraadt 162: show_archive(count, fname, fp)
163: int count;
164: char *fname;
165: FILE *fp;
166: {
167: struct ar_hdr ar_head;
168: struct exec exec_head;
169: int i, rval;
170: long last_ar_off;
171: char *p, *name;
172: int baselen, namelen;
173:
174: baselen = strlen(fname) + 3;
175: namelen = sizeof(ar_head.ar_name);
176: name = emalloc(baselen + namelen);
177:
178: rval = 0;
179:
180: /* while there are more entries in the archive */
181: while (fread((char *)&ar_head, sizeof(ar_head), (size_t)1, fp) == 1) {
182: /* bad archive entry - stop processing this archive */
183: if (strncmp(ar_head.ar_fmag, ARFMAG, sizeof(ar_head.ar_fmag))) {
184: warnx("%s: bad format archive header", fname);
185: (void)free(name);
186: return(1);
187: }
188:
189: /* remember start position of current archive object */
190: last_ar_off = ftell(fp);
191:
192: /* skip ranlib entries */
193: if (!strncmp(ar_head.ar_name, RANLIBMAG, sizeof(RANLIBMAG) - 1))
194: goto skip;
195:
196: /*
197: * construct a name of the form "archive.a:obj.o:" for the
198: * current archive entry if the object name is to be printed
199: * on each output line
200: */
201: p = name;
202: if (count > 1)
203: p += sprintf(p, "%s:", fname);
204: #ifdef AR_EFMT1
205: /*
206: * BSD 4.4 extended AR format: #1/<namelen>, with name as the
207: * first <namelen> bytes of the file
208: */
209: if ( (ar_head.ar_name[0] == '#') &&
210: (ar_head.ar_name[1] == '1') &&
211: (ar_head.ar_name[2] == '/') &&
212: (isdigit(ar_head.ar_name[3]))) {
213:
214: int len = atoi(&ar_head.ar_name[3]);
215: if (len > namelen) {
216: p -= (long)name;
217: name = (char *)erealloc(name, baselen+len);
218: namelen = len;
219: p += (long)name;
220: }
221: if (fread(p, len, 1, fp) != 1) {
222: (void)fprintf(stderr,
223: "nm: %s: premature EOF.\n", name);
224: (void)free(name);
225: return 1;
226: }
227: p += len;
228: } else
229: #endif
230: for (i = 0; i < sizeof(ar_head.ar_name); ++i)
231: if (ar_head.ar_name[i] && ar_head.ar_name[i] != ' ')
232: *p++ = ar_head.ar_name[i];
233: *p++ = '\0';
234:
235: /* get and check current object's header */
236: if (fread((char *)&exec_head, sizeof(exec_head),
237: (size_t)1, fp) != 1) {
238: warnx("%s: premature EOF", name);
239: (void)free(name);
240: return(1);
241: }
242:
243: if (N_BADMAG(exec_head)) {
244: if (!ignore_bad_archive_entries) {
245: warnx("%s: bad format", name);
246: rval = 1;
247: }
1.4 deraadt 248: } else if (N_GETMID(exec_head) != MID_MACHINE) {
249: if (!ignore_bad_archive_entries) {
250: warnx("%s: wrong architecture", name);
251: rval = 1;
252: }
1.2 deraadt 253: } else {
254: (void)fseek(fp, (long)-sizeof(exec_head),
255: SEEK_CUR);
256: rval |= show_objfile(2, name, fp);
257: }
258:
259: /*
260: * skip to next archive object - it starts at the next
261: * even byte boundary
262: */
263: #define even(x) (((x) + 1) & ~1)
264: skip: if (fseek(fp, last_ar_off + even(atol(ar_head.ar_size)),
265: SEEK_SET)) {
266: warn("%s", fname);
267: (void)free(name);
268: return(1);
269: }
270: }
271: (void)free(name);
272: return(rval);
273: }
274:
275: int
276: show_objfile(count, name, fp)
1.1 deraadt 277: int count;
278: char *name;
1.2 deraadt 279: FILE *fp;
1.1 deraadt 280: {
281: static int first = 1;
282: struct exec head;
283: u_long total;
284:
1.2 deraadt 285: if (fread((char *)&head, sizeof(head), (size_t)1, fp) != 1) {
286: warnx("%s: cannot read header", name);
287: return(1);
288: }
289:
290: if (N_BADMAG(head)) {
291: warnx("%s: bad format", name);
1.4 deraadt 292: return(1);
293: }
294:
295: if (N_GETMID(head) != MID_MACHINE) {
296: warnx("%s: wrong architecture", name);
1.2 deraadt 297: return(1);
1.1 deraadt 298: }
299:
300: if (first) {
301: first = 0;
302: (void)printf("text\tdata\tbss\tdec\thex\n");
303: }
304: total = head.a_text + head.a_data + head.a_bss;
305: (void)printf("%lu\t%lu\t%lu\t%lu\t%lx", head.a_text, head.a_data,
306: head.a_bss, total, total);
307: if (count > 1)
308: (void)printf("\t%s", name);
1.6 deraadt 309:
310: total_text += head.a_text;
311: total_data += head.a_data;
312: total_bss += head.a_bss;
313: total_total += total;
314:
1.1 deraadt 315: (void)printf("\n");
316: return (0);
317: }
318:
1.2 deraadt 319: void *
320: emalloc(size)
321: size_t size;
322: {
323: char *p;
324:
325: /* NOSTRICT */
1.8 ! deraadt 326: if ((p = malloc(size)))
1.2 deraadt 327: return(p);
328: err(1, NULL);
329: }
330:
331: void *
332: erealloc(p, size)
333: void *p;
334: size_t size;
335: {
336: /* NOSTRICT */
1.8 ! deraadt 337: if ((p = realloc(p, size)))
1.2 deraadt 338: return(p);
339: err(1, NULL);
340: }
341:
1.1 deraadt 342: void
343: usage()
344: {
1.7 mickey 345: (void)fprintf(stderr, "usage: size [-tw] [file ...]\n");
1.1 deraadt 346: exit(1);
347: }
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