mirror of
https://github.com/sheumann/hush.git
synced 2024-12-23 05:29:58 +00:00
142 lines
3.0 KiB
C
142 lines
3.0 KiB
C
/*
|
|
* Common modutils related functions for busybox
|
|
*
|
|
* Copyright (C) 2008 by Timo Teras <timo.teras@iki.fi>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
#include "modutils.h"
|
|
|
|
#ifdef __UCLIBC__
|
|
extern int init_module(void *module, unsigned long len, const char *options);
|
|
extern int delete_module(const char *module, unsigned int flags);
|
|
#else
|
|
# include <sys/syscall.h>
|
|
# define init_module(mod, len, opts) syscall(__NR_init_module, mod, len, opts)
|
|
# define delete_module(mod, flags) syscall(__NR_delete_module, mod, flags)
|
|
#endif
|
|
|
|
/*
|
|
a libbb candidate from ice age!
|
|
*/
|
|
llist_t FAST_FUNC *llist_find(llist_t *first, const char *str)
|
|
{
|
|
while (first != NULL) {
|
|
if (strcmp(first->data, str) == 0)
|
|
return first;
|
|
first = first->link;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void FAST_FUNC replace(char *s, char what, char with)
|
|
{
|
|
while (*s) {
|
|
if (what == *s)
|
|
*s = with;
|
|
++s;
|
|
}
|
|
}
|
|
|
|
char * FAST_FUNC replace_underscores(char *s)
|
|
{
|
|
replace(s, '-', '_');
|
|
return s;
|
|
}
|
|
|
|
int FAST_FUNC string_to_llist(char *string, llist_t **llist, const char *delim)
|
|
{
|
|
char *tok;
|
|
int len = 0;
|
|
|
|
while ((tok = strsep(&string, delim)) != NULL) {
|
|
if (tok[0] == '\0')
|
|
continue;
|
|
llist_add_to_end(llist, xstrdup(tok));
|
|
len += strlen(tok);
|
|
}
|
|
return len;
|
|
}
|
|
|
|
char * FAST_FUNC filename2modname(const char *filename, char *modname)
|
|
{
|
|
int i;
|
|
char *from;
|
|
|
|
if (filename == NULL)
|
|
return NULL;
|
|
if (modname == NULL)
|
|
modname = xmalloc(MODULE_NAME_LEN);
|
|
from = bb_get_last_path_component_nostrip(filename);
|
|
for (i = 0; i < (MODULE_NAME_LEN-1) && from[i] != '\0' && from[i] != '.'; i++)
|
|
modname[i] = (from[i] == '-') ? '_' : from[i];
|
|
modname[i] = 0;
|
|
|
|
return modname;
|
|
}
|
|
|
|
const char * FAST_FUNC moderror(int err)
|
|
{
|
|
switch (err) {
|
|
case -1:
|
|
return "no such module";
|
|
case ENOEXEC:
|
|
return "invalid module format";
|
|
case ENOENT:
|
|
return "unknown symbol in module, or unknown parameter";
|
|
case ESRCH:
|
|
return "module has wrong symbol version";
|
|
case ENOSYS:
|
|
return "kernel does not support requested operation";
|
|
default:
|
|
return strerror(err);
|
|
}
|
|
}
|
|
|
|
char * FAST_FUNC parse_cmdline_module_options(char **argv)
|
|
{
|
|
char *options;
|
|
int optlen;
|
|
|
|
options = xzalloc(1);
|
|
optlen = 0;
|
|
while (*++argv) {
|
|
options = xrealloc(options, optlen + 2 + strlen(*argv) + 2);
|
|
/* Spaces handled by "" pairs, but no way of escaping quotes */
|
|
optlen += sprintf(options + optlen, (strchr(*argv, ' ') ? "\"%s\" " : "%s "), *argv);
|
|
}
|
|
return options;
|
|
}
|
|
|
|
int FAST_FUNC bb_init_module(const char *filename, const char *options)
|
|
{
|
|
size_t len = MAXINT(ssize_t);
|
|
char *image;
|
|
int rc = ENOENT;
|
|
|
|
if (!options)
|
|
options = "";
|
|
|
|
#if ENABLE_FEATURE_2_4_MODULES
|
|
if (get_linux_version_code() < KERNEL_VERSION(2,6,0))
|
|
return bb_init_module_24(filename, options);
|
|
#endif
|
|
|
|
/* Use the 2.6 way */
|
|
image = xmalloc_open_zipped_read_close(filename, &len);
|
|
if (image) {
|
|
rc = 0;
|
|
if (init_module(image, len, options) != 0)
|
|
rc = errno;
|
|
free(image);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int FAST_FUNC bb_delete_module(const char *module, unsigned int flags)
|
|
{
|
|
return delete_module(module, flags);
|
|
}
|