diff options
author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2001-03-15 18:00:38 +0000 |
---|---|---|
committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2001-03-15 18:00:38 +0000 |
commit | c30517e2b15482509b73aac1eafa6ad744c0c27d (patch) | |
tree | eeede1aa2bf11da243263da7bb2ce02dd8ca61f0 /sbin/modload | |
parent | c29e7d666b02a2c00292c79aeeecf231743d3c94 (diff) |
KNF
Diffstat (limited to 'sbin/modload')
-rw-r--r-- | sbin/modload/modload.c | 154 |
1 files changed, 75 insertions, 79 deletions
diff --git a/sbin/modload/modload.c b/sbin/modload/modload.c index 95d04ae3182..01b7e4e9ec2 100644 --- a/sbin/modload/modload.c +++ b/sbin/modload/modload.c @@ -1,4 +1,4 @@ -/* $OpenBSD: modload.c,v 1.22 2001/03/15 03:07:52 deraadt Exp $ */ +/* $OpenBSD: modload.c,v 1.23 2001/03/15 18:00:37 deraadt Exp $ */ /* $NetBSD: modload.c,v 1.13 1995/05/28 05:21:58 jtc Exp $ */ /* @@ -101,7 +101,7 @@ linkcmd(kernel, entry, outfile, address, object) if ((pid = fork()) < 0) err(18, "fork"); - if(pid == 0) { + if (pid == 0) { execl(_PATH_LD, "ld", LDSYMTABLE, kernel, "-e", entrybuf, "-o", outfile, LDTEXTSTART, addrbuf, object, NULL); exit(128 + errno); @@ -109,17 +109,17 @@ linkcmd(kernel, entry, outfile, address, object) waitpid(pid, &status, 0); - if(WIFSIGNALED(status)) { + if (WIFSIGNALED(status)) { errx(1, "%s got signal: %s", _PATH_LD, sys_siglist[WTERMSIG(status)]); } - if(WEXITSTATUS(status) > 128) { + if (WEXITSTATUS(status) > 128) { errno = WEXITSTATUS(status) - 128; err(1, "exec(%s)", _PATH_LD); } - if(WEXITSTATUS(status) != 0) + if (WEXITSTATUS(status) != 0) errx(1, "%s: return code %d", _PATH_LD, WEXITSTATUS(status)); } @@ -167,7 +167,7 @@ cleanup() fileopen &= ~MOD_OPEN; } - if(dounlink && unlink(modout) != 0) { + if (dounlink && unlink(modout) != 0) { err(17, "unlink(%s)", modout); dounlink = 0; } @@ -178,20 +178,13 @@ main(argc, argv) int argc; char *argv[]; { - int c; char *kname = _PATH_UNIX; - char *entry = NULL; - char *post = NULL; - char *out = NULL; - char *modobj; - char *p; + char *entry = NULL, *post = NULL, *out = NULL, *modobj, *p; struct exec info_buf; struct stat stb; u_int modsize; /* XXX */ u_int modentry; /* XXX */ - struct nlist *nlp; - int strtablen, numsyms; - + int strtablen, c; struct lmc_loadbuf ldbuf; int sz, bytesleft, old = 0; char buf[MODIOBUF]; @@ -257,7 +250,7 @@ main(argc, argv) if (out == NULL) { p = strrchr(modobj, '/'); if (p) - p++; /* skip over '/' */ + p++; /* skip over '/' */ else p = modobj; snprintf(modout, sizeof modout, "%s%sut", _PATH_TMP, p); @@ -272,16 +265,16 @@ main(argc, argv) if (!entry) { /* calculate default entry point */ entry = strrchr(modobj, '/'); if (entry) - entry++; /* skip over '/' */ + entry++; /* skip over '/' */ else entry = modobj; - entry = strdup(entry); /* so we can modify it */ + entry = strdup(entry); /* so we can modify it */ if (!entry) errx(1, "Could not allocate memory"); entry[strlen(entry) - 2] = '\0'; /* chop off .o */ } - if((modfd = open(out, O_RDWR | O_EXCL | O_CREAT, 0600)) < 0) + if ((modfd = open(out, O_RDWR | O_EXCL | O_CREAT, 0600)) < 0) err(1, "creating %s", out); close(modfd); @@ -308,7 +301,7 @@ main(argc, argv) * stat for filesize to figure out string table size */ if (fstat(modfd, &stb) == -1) - err(3, "fstat `%s'", out); + err(3, "fstat `%s'", out); /* * Close the dummy module -- we have our sizing information. @@ -339,22 +332,25 @@ main(argc, argv) resrv.addr = 0; /* returned */ strtablen = stb.st_size - N_STROFF(info_buf); if (symtab) { - /* XXX TODO: grovel through symbol table looking - for just the symbol table stuff from the new module, - and skip the stuff from the kernel. */ - resrv.sym_size = info_buf.a_syms + strtablen; - resrv.sym_symsize = info_buf.a_syms; + /* + * XXX TODO: grovel through symbol table looking + * for just the symbol table stuff from the new module, + * and skip the stuff from the kernel. + */ + resrv.sym_size = info_buf.a_syms + strtablen; + resrv.sym_symsize = info_buf.a_syms; } else - resrv.sym_size = resrv.sym_symsize = 0; + resrv.sym_size = resrv.sym_symsize = 0; if (ioctl(devfd, LMRESERV, &resrv) == -1) { - if (symtab) - warn("not loading symbols: kernel does not support symbol table loading"); + if (symtab) + warn("not loading symbols: " + "kernel does not support symbol table loading"); doold: - symtab = 0; - if (ioctl(devfd, LMRESERV_O, &resrv) == -1) - err(9, "can't reserve memory"); - old = 1; + symtab = 0; + if (ioctl(devfd, LMRESERV_O, &resrv) == -1) + err(9, "can't reserve memory"); + old = 1; } fileopen |= PART_RESRV; @@ -392,8 +388,7 @@ main(argc, argv) * Transfer the relinked module to kernel memory in chunks of * MODIOBUF size at a time. */ - for (bytesleft = info_buf.a_text + info_buf.a_data; - bytesleft > 0; + for (bytesleft = info_buf.a_text + info_buf.a_data; bytesleft > 0; bytesleft -= sz) { sz = min(bytesleft, MODIOBUF); if (read(modfd, buf, sz) != sz) @@ -405,41 +400,39 @@ main(argc, argv) } if (symtab) { - /* - * Seek to the symbol table to start loading it... - */ - if (lseek(modfd, N_SYMOFF(info_buf), SEEK_SET) == -1) - err(12, "lseek"); + /* + * Seek to the symbol table to start loading it... + */ + if (lseek(modfd, N_SYMOFF(info_buf), SEEK_SET) == -1) + err(12, "lseek"); - /* - * Read and load the symbol table entries. - */ - for (bytesleft = info_buf.a_syms; - bytesleft > 0; - bytesleft -= sz) { - sz = min(bytesleft, MODIOBUF); - if (read(modfd, buf, sz) != sz) - err(14, "read"); - ldbuf.cnt = sz; - ldbuf.data = buf; - if (ioctl(devfd, LMLOADSYMS, &ldbuf) == -1) - err(11, "error transferring sym buffer"); - } - - /* - * Read the string table and load it. - */ - for (bytesleft = strtablen; - bytesleft > 0; - bytesleft -= sz) { - sz = min(bytesleft, MODIOBUF); - if (read(modfd, buf, sz) != sz) - err(14, "read"); - ldbuf.cnt = sz; - ldbuf.data = buf; - if (ioctl(devfd, LMLOADSYMS, &ldbuf) == -1) - err(11, "error transferring stringtable buffer"); - } + /* + * Read and load the symbol table entries. + */ + for (bytesleft = info_buf.a_syms; bytesleft > 0; + bytesleft -= sz) { + sz = min(bytesleft, MODIOBUF); + if (read(modfd, buf, sz) != sz) + err(14, "read"); + ldbuf.cnt = sz; + ldbuf.data = buf; + if (ioctl(devfd, LMLOADSYMS, &ldbuf) == -1) + err(11, "error transferring sym buffer"); + } + + /* + * Read the string table and load it. + */ + for (bytesleft = strtablen; bytesleft > 0; + bytesleft -= sz) { + sz = min(bytesleft, MODIOBUF); + if (read(modfd, buf, sz) != sz) + err(14, "read"); + ldbuf.cnt = sz; + ldbuf.data = buf; + if (ioctl(devfd, LMLOADSYMS, &ldbuf) == -1) + err(11, "error transferring stringtable buffer"); + } } /* @@ -454,17 +447,20 @@ main(argc, argv) * zero on failure. */ if (ioctl(devfd, LMREADY, &modentry) == -1) { - if (errno == EINVAL && !old) { - if (fileopen & MOD_OPEN) - close(modfd); - /* PART_RESRV is not true since the kernel cleans up - after a failed LMREADY */ - fileopen &= ~(MOD_OPEN|PART_RESRV); - /* try using oldstyle */ - warn("module failed to load using new version; trying old version"); - goto doold; - } else - err(14, "error initializing module"); + if (errno == EINVAL && !old) { + if (fileopen & MOD_OPEN) + close(modfd); + /* + * PART_RESRV is not true since the kernel cleans + * up after a failed LMREADY + */ + fileopen &= ~(MOD_OPEN|PART_RESRV); + /* try using oldstyle */ + warn("module failed to load using new version; " + "trying old version"); + goto doold; + } else + err(14, "error initializing module"); } /* |