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modprobe now also uses "options" from /etc/modules.conf

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This commit is contained in:
Robert Griebl 2002-07-26 15:54:20 +00:00
parent d0dd3d31e2
commit aead70b4d1
1 changed files with 100 additions and 56 deletions
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156
modutils/modprobe.c
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@ -1,9 +1,6 @@
/* vi: set sw=4 ts=4: */
/*
* really dumb modprobe implementation for busybox
* Copyright (C) 2001 Lineo, davidm@lineo.com
*
* dependency specific stuff completly rewritten and
* Modprobe written from scratch for BusyBox
* copyright (c) 2002 by Robert Griebl, griebl@gmx.de
*
*/
@ -22,6 +19,7 @@
struct dep_t {
char * m_module;
char * m_options;
int m_isalias : 1;
int m_reserved : 15;
@ -34,6 +32,7 @@ struct dep_t {
struct mod_list_t {
char * m_module;
char * m_options;
struct mod_list_t * m_prev;
struct mod_list_t * m_next;
@ -43,6 +42,24 @@ struct mod_list_t {
static struct dep_t *depend;
static int autoclean, show_only, quiet, do_syslog, verbose;
int parse_tag_value ( char *buffer, char **ptag, char **pvalue )
{
char *tag, *value;
while ( isspace ( *buffer ))
buffer++;
tag = value = buffer;
while ( !isspace ( *value ))
value++;
*value++ = 0;
while ( isspace ( *value ))
value++;
*ptag = tag;
*pvalue = value;
return xstrlen( tag ) && xstrlen( value );
}
/* Jump through hoops to simulate how fgets() grabs just one line at a
* time... Don't use any stdio since modprobe gets called from a kernel
@ -141,6 +158,7 @@ static struct dep_t *build_dep ( void )
current = current-> m_next;
}
current-> m_module = mod;
current-> m_options = 0;
current-> m_isalias = 0;
current-> m_depcnt = 0;
current-> m_deparr = 0;
@ -230,41 +248,49 @@ static struct dep_t *build_dep ( void )
if (( strncmp ( buffer, "alias", 5 ) == 0 ) && isspace ( buffer [5] )) {
char *alias, *mod;
alias = buffer + 6;
if ( parse_tag_value ( buffer + 6, &alias, &mod )) {
// fprintf ( stderr, "ALIAS: '%s' -> '%s'\n", alias, mod );
while ( isspace ( *alias ))
alias++;
mod = alias;
while ( !isspace ( *mod ))
mod++;
*mod = 0;
mod++;
while ( isspace ( *mod ))
mod++;
// fprintf ( stderr, "ALIAS: '%s' -> '%s'\n", alias, mod );
if ( !current ) {
first = current = (struct dep_t *) xmalloc ( sizeof ( struct dep_t ));
if ( !current ) {
first = current = (struct dep_t *) xmalloc ( sizeof ( struct dep_t ));
}
else {
current-> m_next = (struct dep_t *) xmalloc ( sizeof ( struct dep_t ));
current = current-> m_next;
}
current-> m_module = xstrdup ( alias );
current-> m_isalias = 1;
if (( strcmp ( alias, "off" ) == 0 ) || ( strcmp ( alias, "null" ) == 0 )) {
current-> m_depcnt = 0;
current-> m_deparr = 0;
}
else {
current-> m_depcnt = 1;
current-> m_deparr = xmalloc ( 1 * sizeof( char * ));
current-> m_deparr[0] = xstrdup ( mod );
}
current-> m_next = 0;
}
else {
current-> m_next = (struct dep_t *) xmalloc ( sizeof ( struct dep_t ));
current = current-> m_next;
}
current-> m_module = xstrdup ( alias );
current-> m_isalias = 1;
if (( strcmp ( alias, "off" ) == 0 ) || ( strcmp ( alias, "null" ) == 0 )) {
current-> m_depcnt = 0;
current-> m_deparr = 0;
}
else {
current-> m_depcnt = 1;
current-> m_deparr = xmalloc ( 1 * sizeof( char * ));
current-> m_deparr[0] = xstrdup ( mod );
}
current-> m_next = 0;
}
else if (( strncmp ( buffer, "options", 7 ) == 0 ) && isspace ( buffer [7] )) {
char *mod, *opt;
if ( parse_tag_value ( buffer + 8, &mod, &opt )) {
struct dep_t *dt;
for ( dt = first; dt; dt = dt-> m_next ) {
if ( strcmp ( dt-> m_module, mod ) == 0 )
break;
}
if ( dt ) {
dt-> m_options = xrealloc ( dt-> m_options, xstrlen( opt ) + 1 );
strcpy ( dt-> m_options, opt );
// fprintf ( stderr, "OPTION: '%s' -> '%s'\n", dt-> m_module, dt-> m_options );
}
}
}
}
}
close ( fd );
@ -283,7 +309,7 @@ static int mod_process ( struct mod_list_t *list, int do_insert )
while ( list ) {
if ( do_insert )
snprintf ( lcmd, sizeof( lcmd ) - 1, "insmod %s %s %s %s 2>/dev/null", do_syslog ? "-s" : "", autoclean ? "-k" : "", quiet ? "-q" : "", list-> m_module );
snprintf ( lcmd, sizeof( lcmd ) - 1, "insmod %s %s %s %s %s 2>/dev/null", do_syslog ? "-s" : "", autoclean ? "-k" : "", quiet ? "-q" : "", list-> m_module, list-> m_options ? list-> m_options : "" );
else
snprintf ( lcmd, sizeof( lcmd ) - 1, "rmmod %s %s 2>/dev/null", do_syslog ? "-s" : "", list-> m_module );
@ -301,7 +327,7 @@ static void check_dep ( char *mod, struct mod_list_t **head, struct mod_list_t *
{
struct mod_list_t *find;
struct dep_t *dt;
char *opt = 0;
int lm;
// remove .o extension
@ -311,16 +337,31 @@ static void check_dep ( char *mod, struct mod_list_t **head, struct mod_list_t *
// check dependencies
for ( dt = depend; dt; dt = dt-> m_next ) {
if ( strcmp ( dt-> m_module, mod ) == 0 )
if ( strcmp ( dt-> m_module, mod ) == 0 ) {
opt = dt-> m_options;
break;
}
}
// resolve alias names
if ( dt && dt-> m_isalias ) {
if ( dt-> m_depcnt == 1 )
check_dep ( dt-> m_deparr [0], head, tail );
printf ( "Got alias: %s -> %s\n", mod, dt-> m_deparr [0] );
return;
while ( dt && dt-> m_isalias ) {
if ( dt-> m_depcnt == 1 ) {
struct dep_t *adt;
for ( adt = depend; adt; adt = adt-> m_next ) {
if ( strcmp ( adt-> m_module, dt-> m_deparr [0] ) == 0 ) {
if ( !opt )
opt = adt-> m_options;
break;
}
}
if ( !adt )
return;
else
dt = adt;
}
else
return;
}
// search for duplicates
@ -345,6 +386,7 @@ static void check_dep ( char *mod, struct mod_list_t **head, struct mod_list_t *
if ( !find ) { // did not find a duplicate
find = (struct mod_list_t *) xmalloc ( sizeof(struct mod_list_t));
find-> m_module = mod;
find-> m_options = opt;
}
// enqueue at tail
@ -377,21 +419,23 @@ static int mod_insert ( char *mod, int argc, char **argv )
check_dep ( mod, &head, &tail );
if ( head && tail ) {
int i;
int l = 0;
if ( argc ) {
int i;
int l = 0;
// append module args
l = xstrlen ( head-> m_module );
for ( i = 0; i < argc; i++ )
l += ( xstrlen ( argv [i] ) + 1 );
// append module args
for ( i = 0; i < argc; i++ )
l += ( xstrlen ( argv [i] ) + 1 );
head-> m_module = xrealloc ( head-> m_module, l + 1 );
head-> m_options = xrealloc ( head-> m_options, l + 1 );
head-> m_options [0] = 0;
for ( i = 0; i < argc; i++ ) {
strcat ( head-> m_module, " " );
strcat ( head-> m_module, argv [i] );
for ( i = 0; i < argc; i++ ) {
strcat ( head-> m_options, argv [i] );
strcat ( head-> m_options, " " );
}
}
// process tail ---> head
rc |= mod_process ( tail, 1 );
}