/* vi: set sw=4 ts=4: */
/*
* Mini insmod implementation for busybox
+ * This version of insmod now supports x86, ARM, SH3/4, powerpc, and MIPS.
*
* Copyright (C) 1999,2000,2001 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>
#ifndef MODUTILS_MODULE_H
static const int MODUTILS_MODULE_H = 1;
-#ident "$Id: insmod.c,v 1.57 2001/04/05 07:33:10 andersen Exp $"
+#ident "$Id: insmod.c,v 1.63 2001/05/14 20:03:04 andersen Exp $"
/* This file contains the structures used by the 2.0 and 2.1 kernels.
We do not use the kernel headers directly because we do not wish
#ifndef MODUTILS_OBJ_H
static const int MODUTILS_OBJ_H = 1;
-#ident "$Id: insmod.c,v 1.57 2001/04/05 07:33:10 andersen Exp $"
+#ident "$Id: insmod.c,v 1.63 2001/05/14 20:03:04 andersen Exp $"
/* The relocatable object is manipulated using elfin types. */
struct external_module *ext_modules;
int n_ext_modules;
int n_ext_modules_used;
-
-
extern int delete_module(const char *);
+static char m_filename[FILENAME_MAX + 1];
+static char m_fullName[FILENAME_MAX + 1];
-/* This is kind of troublesome. See, we don't actually support
- the m68k or the arm the same way we support i386 and (now)
- sh. In doing my SH patch, I just assumed that whatever works
- for i386 also works for m68k and arm since currently insmod.c
- does nothing special for them. If this isn't true, the below
- line is rather misleading IMHO, and someone should either
- change it or add more proper architecture-dependent support
- for these boys.
-
- -- Bryan Rittmeyer <bryan@ixiacom.com> */
-static char m_filename[BUFSIZ + 1];
-static char m_fullName[BUFSIZ + 1];
/*======================================================================*/
-static int findNamedModule(const char *fileName, struct stat *statbuf,
- void *userDate)
+static int check_module_name_match(const char *filename, struct stat *statbuf,
+ void *userdata)
{
- char *fullName = (char *) userDate;
+ char *fullname = (char *) userdata;
-
- if (fullName[0] == '\0')
+ if (fullname[0] == '\0')
return (FALSE);
else {
- char *tmp = strrchr((char *) fileName, '/');
-
- if (tmp == NULL)
- tmp = (char *) fileName;
- else
- tmp++;
- if (check_wildcard_match(tmp, fullName) == TRUE) {
+ char *tmp, *tmp1 = strdup(filename);
+ tmp = get_last_path_component(tmp1);
+ if (strcmp(tmp, fullname) == 0) {
+ free(tmp1);
/* Stop searching if we find a match */
- memcpy(m_filename, fileName, strlen(fileName)+1);
- return (FALSE);
+ safe_strncpy(m_filename, filename, sizeof(m_filename));
+ return (TRUE);
}
+ free(tmp1);
}
- return (TRUE);
+ return (FALSE);
}
void *obj_extend_section(struct obj_section *sec, unsigned long more)
{
unsigned long oldsize = sec->header.sh_size;
- sec->contents = xrealloc(sec->contents, sec->header.sh_size += more);
+ if (more) {
+ sec->contents = xrealloc(sec->contents, sec->header.sh_size += more);
+ }
return sec->contents + oldsize;
}
int nks, nms, nmod, i;
nks = get_kernel_syms(NULL);
- if (nks < 0) {
- perror_msg("get_kernel_syms: %s", m_name);
+ if (nks <= 0) {
+ if (nks)
+ perror_msg("get_kernel_syms: %s", m_name);
+ else
+ error_msg("No kernel symbols");
return 0;
}
while (k->name[0] == '#' && k->name[1]) {
struct old_kernel_sym *k2;
- struct new_module_symbol *s;
/* Find out how many symbols this module has. */
for (k2 = k + 1; k2->name[0] != '#'; ++k2)
module_names = xmalloc(bufsize = 256);
retry_modules_load:
if (query_module(NULL, QM_MODULES, module_names, bufsize, &ret)) {
- if (errno == ENOSPC) {
+ if (errno == ENOSPC && bufsize < ret) {
module_names = xrealloc(module_names, bufsize = ret);
goto retry_modules_load;
}
syms = xmalloc(bufsize = 16 * 1024);
retry_kern_sym_load:
if (query_module(NULL, QM_SYMBOLS, syms, bufsize, &ret)) {
- if (errno == ENOSPC) {
+ if (errno == ENOSPC && bufsize < ret) {
syms = xrealloc(syms, bufsize = ret);
goto retry_kern_sym_load;
}
tgt_long m_addr;
sec = obj_find_section(f, ".this");
+ if (!sec || !sec->contents) {
+ perror_msg_and_die("corrupt module %s?",m_name);
+ }
module = (struct new_module *) sec->contents;
m_addr = sec->header.sh_addr;
for (i = 0; i < shnum; ++i) {
struct obj_section *sec = f->sections[i];
+ /* .modinfo should be contents only but gcc has no attribute for that.
+ * The kernel may have marked .modinfo as ALLOC, ignore this bit.
+ */
+ if (strcmp(sec->name, ".modinfo") == 0)
+ sec->header.sh_flags &= ~SHF_ALLOC;
+
if (sec->header.sh_flags & SHF_ALLOC)
obj_insert_section_load_order(f, sec);
/* Allocate space for a table of local symbols. */
j = f->local_symtab_size = sec->header.sh_info;
- f->local_symtab = xmalloc(j *=
- sizeof(struct obj_symbol *));
- memset(f->local_symtab, 0, j);
+ f->local_symtab = xcalloc(j, sizeof(struct obj_symbol *));
/* Insert all symbols into the hash table. */
for (j = 1, ++sym; j < nsym; ++j, ++sym) {
const char *name;
if (sym->st_name)
name = strtab + sym->st_name;
- else
+ else
name = f->sections[sym->st_shndx]->name;
obj_add_symbol(f, name, j, sym->st_info, sym->st_shndx,
sym->st_value, sym->st_size);
- }
- }
+ }
+ }
break;
case SHT_RELM:
return NULL;
}
break;
+ /* XXX Relocation code from modutils-2.3.19 is not here.
+ * Why? That's about 20 lines of code from obj/obj_load.c,
+ * which gets done in a second pass through the sections.
+ * This BusyBox insmod does similar work in obj_relocate(). */
}
}
FILE *fp;
struct obj_file *f;
struct stat st;
- char m_name[BUFSIZ + 1] = "\0";
+ char m_name[FILENAME_MAX + 1] = "\0";
int exit_status = EXIT_FAILURE;
int m_has_modinfo;
#ifdef BB_FEATURE_INSMOD_VERSION_CHECKING
flag_export = 0;
break;
case 'o': /* name the output module */
- strncpy(m_name, optarg, BUFSIZ);
+ strncpy(m_name, optarg, FILENAME_MAX);
break;
case 'L': /* Stub warning */
/* This is needed for compatibility with modprobe.
if (len > 2 && tmp[len - 2] == '.' && tmp[len - 1] == 'o')
len -= 2;
- strncpy(m_fullName, tmp, len);
+ memcpy(m_fullName, tmp, len);
+ m_fullName[len]='\0';
if (*m_name == '\0') {
strcpy(m_name, m_fullName);
}
strcat(m_fullName, ".o");
- /* Get a filedesc for the module */
+ /* Get a filedesc for the module. Check we we have a complete path */
if (stat(argv[optind], &st) < 0 || !S_ISREG(st.st_mode) ||
(fp = fopen(argv[optind], "r")) == NULL) {
- /* Hmpf. Could not open it. Search through _PATH_MODULES to find a module named m_name */
- if (recursive_action(_PATH_MODULES, TRUE, FALSE, FALSE,
- findNamedModule, 0, m_fullName) == FALSE)
+ struct utsname myuname;
+
+ /* Hmm. Could not open it. First search under /lib/modules/`uname -r`,
+ * but do not error out yet if we fail to find it... */
+ if (uname(&myuname) == 0) {
+ char module_dir[FILENAME_MAX];
+ char real_module_dir[FILENAME_MAX];
+ snprintf (module_dir, sizeof(module_dir), "%s/%s",
+ _PATH_MODULES, myuname.release);
+ /* Jump through hoops in case /lib/modules/`uname -r`
+ * is a symlink. We do not want recursive_action to
+ * follow symlinks, but we do want to follow the
+ * /lib/modules/`uname -r` dir, So resolve it ourselves
+ * if it is a link... */
+ if (realpath (module_dir, real_module_dir) == NULL)
+ strcpy(real_module_dir, module_dir);
+ recursive_action(real_module_dir, TRUE, FALSE, FALSE,
+ check_module_name_match, 0, m_fullName);
+ }
+
+ /* Check if we have found anything yet */
+ if (m_filename[0] == '\0' || ((fp = fopen(m_filename, "r")) == NULL))
{
- if (m_filename[0] == '\0'
- || ((fp = fopen(m_filename, "r")) == NULL))
+ char module_dir[FILENAME_MAX];
+ if (realpath (_PATH_MODULES, module_dir) == NULL)
+ strcpy(module_dir, _PATH_MODULES);
+ /* No module found under /lib/modules/`uname -r`, this
+ * time cast the net a bit wider. Search /lib/modules/ */
+ if (recursive_action(module_dir, TRUE, FALSE, FALSE,
+ check_module_name_match, 0, m_fullName) == FALSE)
{
- error_msg("No module named '%s' found in '%s'", m_fullName, _PATH_MODULES);
- return EXIT_FAILURE;
- }
- } else
- error_msg_and_die("No module named '%s' found in '%s'", m_fullName, _PATH_MODULES);
- } else
- memcpy(m_filename, argv[optind], strlen(argv[optind]));
+ if (m_filename[0] == '\0'
+ || ((fp = fopen(m_filename, "r")) == NULL))
+ {
+ error_msg("%s: no module by that name found", m_fullName);
+ return EXIT_FAILURE;
+ }
+ } else
+ error_msg_and_die("%s: no module by that name found", m_fullName);
+ }
+ } else
+ safe_strncpy(m_filename, argv[optind], sizeof(m_filename));
+ printf("Using %s\n", m_filename);
if ((f = obj_load(fp)) == NULL)
perror_msg_and_die("Could not load the module");
projects / oweals / busybox.git / blobdiff