summaryrefslogtreecommitdiff
path: root/modutils/modprobe.c
diff options
context:
space:
mode:
authorRobert Griebl2002-05-28 21:32:10 +0000
committerRobert Griebl2002-05-28 21:32:10 +0000
commit1d4ef2a9e9c8d8b448bcce7dea36220e220e137b (patch)
tree362aca2d9546fd51cc4d50f99db2f6cf542ba5e8 /modutils/modprobe.c
parent53146cc9ec7f3af5a8fa6245bf01c4f9c0fd19b4 (diff)
downloadbusybox-1d4ef2a9e9c8d8b448bcce7dea36220e220e137b.zip
busybox-1d4ef2a9e9c8d8b448bcce7dea36220e220e137b.tar.gz
Added support for /etc/modules.conf parsing
for now only the 'alias' entries are evaluated
Diffstat (limited to 'modutils/modprobe.c')
-rw-r--r--modutils/modprobe.c123
1 files changed, 105 insertions, 18 deletions
diff --git a/modutils/modprobe.c b/modutils/modprobe.c
index 9230fec..a510f69 100644
--- a/modutils/modprobe.c
+++ b/modutils/modprobe.c
@@ -23,7 +23,10 @@
struct dep_t {
char * m_module;
- int m_depcnt;
+ int m_isalias : 1;
+ int m_reserved : 15;
+
+ int m_depcnt : 16;
char ** m_deparr;
struct dep_t * m_next;
@@ -70,7 +73,7 @@ static struct dep_t *build_dep ( void )
int l = xstrlen ( buffer );
char *p = 0;
- if ( buffer [l-1] == '\n' ) {
+ while ( isspace ( buffer [l-1] )) {
buffer [l-1] = 0;
l--;
}
@@ -108,10 +111,11 @@ static struct dep_t *build_dep ( void )
current-> m_next = (struct dep_t *) malloc ( sizeof ( struct dep_t ));
current = current-> m_next;
}
- current-> m_module = mod;
- current-> m_depcnt = 0;
- current-> m_deparr = 0;
- current-> m_next = 0;
+ current-> m_module = mod;
+ current-> m_isalias = 0;
+ current-> m_depcnt = 0;
+ current-> m_deparr = 0;
+ current-> m_next = 0;
//printf ( "%s:\n", mod );
@@ -161,6 +165,78 @@ static struct dep_t *build_dep ( void )
continuation_line = 0;
}
fclose ( f );
+
+ // alias parsing is not 100% correct (no correct handling of continuation lines within an alias) !
+
+ f = fopen ( "/etc/modules.conf", "r" );
+ if ( !f )
+ f = fopen ( "/etc/conf.modules", "r" );
+ if ( f ) {
+ continuation_line = 0;
+
+ while ( fgets ( buffer, sizeof( buffer), f )) {
+ int l;
+ char *p;
+
+ p = strchr ( buffer, '#' );
+ if ( p )
+ *p = 0;
+
+ l = xstrlen ( buffer );
+
+ while ( l && isspace ( buffer [l-1] )) {
+ buffer [l-1] = 0;
+ l--;
+ }
+
+ if ( l == 0 ) {
+ continuation_line = 0;
+ continue;
+ }
+
+ if ( !continuation_line ) {
+ if (( strncmp ( buffer, "alias", 5 ) == 0 ) && isspace ( buffer [5] )) {
+ char *alias, *mod;
+
+ alias = buffer + 6;
+
+ 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 *) malloc ( sizeof ( struct dep_t ));
+ }
+ else {
+ current-> m_next = (struct dep_t *) malloc ( 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;
+ }
+ }
+ }
+ fclose ( f );
+ }
return first;
}
@@ -202,6 +278,20 @@ static void check_dep ( char *mod, struct mod_list_t **head, struct mod_list_t *
if (( mod [lm-2] == '.' ) && ( mod [lm-1] == 'o' ))
mod [lm-2] = 0;
+ // check dependencies
+ for ( dt = depend; dt; dt = dt-> m_next ) {
+ if ( strcmp ( dt-> m_module, mod ) == 0 )
+ 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;
+ }
+
// search for duplicates
for ( find = *head; find; find = find-> m_next ) {
if ( !strcmp ( mod, find-> m_module )) {
@@ -231,20 +321,17 @@ static void check_dep ( char *mod, struct mod_list_t **head, struct mod_list_t *
(*tail)-> m_next = find;
find-> m_prev = *tail;
find-> m_next = 0;
-
+
if ( !*head )
*head = find;
*tail = find;
- // check dependencies
- for ( dt = depend; dt; dt = dt-> m_next ) {
- if ( !strcmp ( dt-> m_module, mod )) {
- int i;
-
- for ( i = 0; i < dt-> m_depcnt; i++ )
- check_dep ( dt-> m_deparr [i], head, tail );
- }
- }
+ if ( dt ) {
+ int i;
+
+ for ( i = 0; i < dt-> m_depcnt; i++ )
+ check_dep ( dt-> m_deparr [i], head, tail );
+ }
}
@@ -263,11 +350,11 @@ static int mod_insert ( char *mod, int argc, char **argv )
int l = 0;
// append module args
- l = xstrlen ( mod );
+ l = xstrlen ( head-> m_module );
for ( i = 0; i < argc; i++ )
l += ( xstrlen ( argv [i] ) + 1 );
- head-> m_module = xstrndup ( mod, l );
+ head-> m_module = realloc ( head-> m_module, l + 1 );
for ( i = 0; i < argc; i++ ) {
strcat ( head-> m_module, " " );