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modprobe: revert checking for /, stop doing basename() on modprobe args

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function                                             old     new   delta
process_module                                       726     719      -7
filename2modname                                      81      67     -14
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(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-21)             Total: -21 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2015-01-01 19:02:40 +01:00
parent 6c19d35f68
commit 78854520eb
3 changed files with 12 additions and 15 deletions
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8
modutils/modprobe-small.c
View File

@ -149,9 +149,13 @@ static void replace(char *s, char what, char with)
static char *filename2modname(const char *filename, char *modname) static char *filename2modname(const char *filename, char *modname)
{ {
int i; int i;
char *from; const char *from;
from = bb_get_last_path_component_nostrip(filename); // Disabled since otherwise "modprobe dir/name" would work
// as if it is "modprobe name". It is unclear why
// 'basenamization' was here in the first place.
//from = bb_get_last_path_component_nostrip(filename);
from = filename;
for (i = 0; i < (MODULE_NAME_LEN-1) && from[i] != '\0' && from[i] != '.'; i++) for (i = 0; i < (MODULE_NAME_LEN-1) && from[i] != '\0' && from[i] != '.'; i++)
modname[i] = (from[i] == '-') ? '_' : from[i]; modname[i] = (from[i] == '-') ? '_' : from[i];
modname[i] = '\0'; modname[i] = '\0';

11
modutils/modprobe.c
View File

@ -238,17 +238,6 @@ static void add_probe(const char *name)
{ {
struct module_entry *m; struct module_entry *m;
/*
* get_or_add_modentry() strips path from name and works
* on remaining basename.
* This would make "rmmod dir/name" and "modprobe dir/name"
* to work like "rmmod name" and "modprobe name",
* which is wrong, and can be abused via implicit modprobing:
* "ifconfig /usbserial up" tries to modprobe netdev-/usbserial.
*/
if (strchr(name, '/'))
bb_error_msg_and_die("malformed module name '%s'", name);
m = get_or_add_modentry(name); m = get_or_add_modentry(name);
if (!(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS)) if (!(option_mask32 & (OPT_REMOVE | OPT_SHOW_DEPS))
&& (m->flags & MODULE_FLAG_LOADED) && (m->flags & MODULE_FLAG_LOADED)

8
modutils/modutils.c
View File

@ -48,13 +48,17 @@ int FAST_FUNC string_to_llist(char *string, llist_t **llist, const char *delim)
char* FAST_FUNC filename2modname(const char *filename, char *modname) char* FAST_FUNC filename2modname(const char *filename, char *modname)
{ {
int i; int i;
char *from; const char *from;
if (filename == NULL) if (filename == NULL)
return NULL; return NULL;
if (modname == NULL) if (modname == NULL)
modname = xmalloc(MODULE_NAME_LEN); modname = xmalloc(MODULE_NAME_LEN);
from = bb_get_last_path_component_nostrip(filename); // Disabled since otherwise "modprobe dir/name" would work
// as if it is "modprobe name". It is unclear why
// 'basenamization' was here in the first place.
//from = bb_get_last_path_component_nostrip(filename);
from = filename;
for (i = 0; i < (MODULE_NAME_LEN-1) && from[i] != '\0' && from[i] != '.'; i++) for (i = 0; i < (MODULE_NAME_LEN-1) && from[i] != '\0' && from[i] != '.'; i++)
modname[i] = (from[i] == '-') ? '_' : from[i]; modname[i] = (from[i] == '-') ? '_' : from[i];
modname[i] = '\0'; modname[i] = '\0';