2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
11 * cfgexport - load/configure the EXPORT kernel extension
13 #include <afs/param.h>
14 #include <afsconfig.h>
20 #include <sys/types.h>
21 #include <sys/device.h>
22 #include <sys/sysconfig.h>
24 #include <sys/xcoff.h>
31 extern char *malloc(), *optarg;
33 extern int sysconfig(int cmd, void *arg, int len);
38 #include "AFS_component_version_number.c"
42 register add, del, opts;
46 struct cfg_load cload;
53 * The following signal action for AIX is necessary so that in case of a
54 * crash (i.e. core is generated) we can include the user's data section
55 * in the core dump. Unfortunately, by default, only a partial core is
56 * generated which, in many cases, isn't too useful.
60 sigemptyset(&nsa.sa_mask);
61 nsa.sa_handler = SIG_DFL;
62 nsa.sa_flags = SA_FULLDUMP;
63 sigaction(SIGSEGV, &nsa, NULL);
67 while ((c = getopt(argc, argv, "a:s:Z:d:")) != EOF) {
69 case 'Z': /* Zdebug option */
104 buf[0] = "execerror";
105 buf[1] = "cfgexport";
106 get_syms(&conf, syms);
109 if (sysconfig(SYS_KLOAD, &cload, sizeof(cload)) == -1) {
110 loadquery(L_GETMESSAGES, &buf[2], sizeof buf - 8);
111 execvp("/etc/execerror", buf);
116 cmod.kmid = cload.kmid;
118 cmod.mdiptr = (caddr_t) &conf;
119 cmod.mdilen = sizeof (conf);
121 if (sysconfig(SYS_CFGKMOD, &cmod, sizeof(cmod)) == -1) {
122 perror("SYS_CFGKMOD");
123 cload.kmid = cload.kmid;
124 sysconfig(SYS_KULOAD, &cload, sizeof(cload));
128 printf("cfgexport -d 0x%x # to remove EXPORT\n", cload.kmid);
130 strcpy(PidFile, file);
131 strcat(PidFile, ".kmid");
132 fp = fopen(PidFile, "w");
134 (void) fprintf(fp, "%d\n", cload.kmid);
137 printf("Can't open for write file %s (error=%d); ignored\n", PidFile, errno);
143 strcpy(PidFile, file);
144 strcat(PidFile, ".kmid");
145 fp = fopen(PidFile, "r");
147 printf("Can't read %s file (error=%d); aborting\n", PidFile, errno);
150 (void) fscanf(fp, "%d\n", &kmid);
158 if (sysconfig(SYS_CFGKMOD, &cmod, sizeof(cmod)) == -1) {
159 perror("SYS_CFGKMOD");
164 if (sysconfig(SYS_KULOAD, &cload, sizeof(cload)) == -1) {
165 perror("SYS_KULOAD");
174 error("usage: cfgexport [-a mod_file [-s symbols]] [-d mod_file]\n");
178 * get_syms - get kernel symbol table info.
181 * conf - ^ to EXPORT extension configuration struct
182 * syms - ^ to name of file containing XCOFF symbols
188 register sym_t *k_symtab, *ksp;
189 register struct syment *x_symtab, *xsp, *xsq;
190 register char *xstrings;
192 struct xcoffhdr hdr; /* XCOFF header from symbol file*/
193 sym_t k_sym; /* export version of symbol */
194 struct syment xcoff_sym; /* xcoff version of symbol */
195 register i, nsyms, nksyms, nxsyms;
196 int xstr_size, kstr_size;
200 fp = fopen(syms, "r");
204 if (fread(&hdr, sizeof (hdr), 1, fp) != 1)
207 if (hdr.filehdr.f_nsyms == 0)
208 error("%s: no symbols", syms);
210 switch (hdr.filehdr.f_magic) {
220 error("%s: funny magic number 0%o"
221 , syms, hdr.filehdr.f_magic);
224 nsyms = hdr.filehdr.f_nsyms;
226 printf("nsyms = %d\n", nsyms);
228 x_symtab = (struct syment *) malloc(nsyms * SYMESZ);
230 error("no memory for symbol table");
233 * try to snarf the string table: should be just past the
234 * symbol table: first 4 bytes is length of rest.
236 if (fseek(fp, hdr.filehdr.f_symptr + nsyms * SYMESZ, 0) < 0)
237 sys_error("%s: seek to strtab", syms);
239 if (fread(&xstr_size, sizeof (xstr_size), 1, fp) != 1)
240 error("%s: reading string table size", syms);
242 xstrings = malloc(xstr_size + sizeof (xstr_size));
244 error("no memory for string table");
247 * seek back to the start of the strings
249 if (fseek(fp, hdr.filehdr.f_symptr + nsyms * SYMESZ, 0) < 0)
250 sys_error("%s: seek to strtab", syms);
252 if (fread(xstrings, sizeof (*xstrings), xstr_size, fp) != xstr_size)
253 error("%s: reading string table");
256 * now seek back to the start of the symbol table, and read it
259 if (fseek(fp, hdr.filehdr.f_symptr, 0) < 0)
260 sys_error("%s: seek to symtab", syms);
264 for (i = nxsyms = 0; i < nsyms; ++i) {
267 if (fread(&xcoff_sym, SYMESZ, 1, fp) != 1)
268 error("%s: reading symbol entry", syms);
270 if (xcoff_sym.n_zeroes == 0) {
272 * Need to relocate string table offset
274 p = xcoff_sym.n_nptr = xstrings + xcoff_sym.n_offset;
276 strncpy(name, xcoff_sym.n_name, 8);
282 dump_xsym(&xcoff_sym);
284 switch (xcoff_sym.n_sclass) {
285 case C_EXT: /* external */
286 case C_HIDEXT: /* hidden external (sic) */
288 * filtre out the ones with the strange names
290 if (strchr(p, '@') || strchr(p, '$') || p[0] == 0)
297 dump_xsym(&xcoff_sym);
302 if (xcoff_sym.n_numaux) {
303 fseek(fp, xcoff_sym.n_numaux * AUXESZ, 1);
304 i += xcoff_sym.n_numaux;
311 * sort the symbol table
313 qsort((char *) x_symtab, nxsyms, sizeof (*x_symtab), xsym_compar);
316 * we will need no more than `nxsyms' symbols.
318 k_symtab = (sym_t *) malloc(nxsyms * sizeof (sym_t));
320 error("no memory for EXPORT symbol table");
323 * uniquify it, and xlate to funny EXPORT format
325 xsp = xsq = x_symtab;
331 bzero(xsq = &xcoff_sym, sizeof (*xsq));
333 for (i = 1; i < nxsyms; ++i, xsq = xsp++) {
334 if (xsp->n_zeroes != xsq->n_zeroes
335 || xsp->n_offset != xsq->n_offset
336 || xsp->n_value != xsq->n_value) {
337 xlate_xtok(xsp, ksp++, &kstrings, &kstr_size);
343 * place the symbol table info into the `conf' data structure
345 * XXXXX: for today only, leave the string table the same.
347 conf->nsyms = nksyms;
348 conf->symt_sz = nksyms * sizeof (sym_t);
349 conf->str_sz = kstr_size;
350 conf->symtab = (caddr_t) k_symtab;
351 conf->strtab = kstrings;
356 * xlate_xtok - xlate XCOFF to EXPORT format
359 * xp - ^ to XCOFF symbol
360 * kp - ^ to EXPORT symbol save area
361 * strp - ^ to ^ to EXPORT string table
362 * szp - ^ to EXPORT string table size
364 xlate_xtok(xp, kp, strp, szp)
365 register struct syment *xp;
370 static char *export_strings, *prev = "";
371 static left, offset, sz;
373 if (!export_strings) {
374 export_strings = malloc(sz=1024);
376 error("no memory for EXPORT string table");
378 *strp = export_strings;
379 *szp = offset = sizeof (uint);
380 left = 1024 - offset;
382 export_strings += offset;
384 *(uint *) export_strings = 0; /* initial 4 bytes */
387 if (kp->n_zeroes = xp->n_zeroes) { /* sic */
388 kp->n_zeroes = xp->n_zeroes;
389 kp->n_offset = xp->n_offset;
390 } else if (strcmp(prev, xp->n_nptr) == 0) {
392 * same name as previous entry: just use previous
394 kp->n_offset = offset - strlen(xp->n_nptr) - 1;
395 } else if (find_suffix(xp->n_nptr, *strp, offset, &kp->n_offset)) {
397 * found a string that we are a suffix of
402 * need to add to our string table
404 len = strlen(xp->n_nptr) + 1;
405 while (len >= left) {
406 export_strings = (char *)realloc(*strp, sz += 1024);
408 error("no memory for EXPORT string table");
409 *strp = export_strings;
411 prev = ""; /* lazy */
414 strcpy(prev = *strp + offset, xp->n_nptr);
416 kp->n_offset = offset;
422 kp->n_value = xp->n_value;
425 dump_ksym(kp, *strp);
429 * find_suffix - look for a string that arg string is suffix of
432 * p - ^ to string we hope is a suffix of another
433 * strings - ^ to string table
434 * max - max offset of valid string in strings
435 * offp - ^ to place to store offset, if containing string found
438 * 0 - no containing string found
439 * !0 - string found of which `p' is a suffix
442 * This is rather inefficient.
444 find_suffix(p, strings, max, offp)
445 register char *p, *strings;
447 register char *q, *e;
448 register len = strlen(p) - 1;
450 strings += sizeof (uint);
451 max -= sizeof (uint);
453 for (e = strings + max; e > strings; ) {
455 * adjust `e' to point at last non-blank
462 for (q = p + len; q > p && *q == *e; )
467 printf("found_suffix: %s\n", p);
468 return *offp = e - strings + sizeof (uint);
472 while (*e && e > strings)
480 * xsym_compar - compare two XCOFF symbol table entries
482 * If the names are the same, sort by descending storage class, so that
486 register struct syment *xp, *xq; {
487 register char *p, *q;
490 p = (xp->n_zeroes ? xp->n_name : xp->n_nptr);
491 q = (xq->n_zeroes ? xq->n_name : xq->n_nptr);
493 if (xp->n_zeroes || xq->n_zeroes)
494 compar = strncmp(p, q, 8);
496 compar = strcmp(p, q);
499 compar = xp->n_sclass - xq->n_sclass;
505 * dump_xsym - print to XCOFF symbol
508 struct syment *xsp; {
512 "nptr <%-8.8s %8.8s> val %8.8x sc# %4.4x type %4.4x sclass %2.2x naux %2.2x\n"
516 , xsp->n_scnum & 0xffff
523 "nptr <%-17.17s> val %8.8x sc# %4.4x type %4.4x sclass %2.2x naux %2.2x\n"
526 , xsp->n_scnum & 0xffff
532 dump_ksym(ksp, strings)
537 printf("%8.8x %-8.8s\n", ksp->n_value, ksp->n_name);
539 printf("%8.8x %s\n", ksp->n_value, ksp->n_offset + strings);
542 error(p, a, b, c, d, e)
545 fprintf(stderr, p, a, b, c, d, e);
546 fprintf(stderr, "\n");
550 sys_error(p, a, b, c, d, e)
554 fprintf(stderr, p, a, b, c, d, e);
559 warn(p, a, b, c, d, e)
563 fprintf(stderr, p, a, b, c, d, e);
564 fprintf(stderr, "\n");