modprobe: support for /etc/modprobe.d, by Timo Teras.
function old new delta include_conf_file_act - 929 +929 include_conf_recursive - 30 +30 include_conf_file2 - 30 +30 include_conf_file - 14 +14 include_conf_dir_act - 14 +14 build_dep 1011 875 -136 include_conf 922 - -922 ------------------------------------------------------------------------------ (add/remove: 5/1 grow/shrink: 0/1 up/down: 1017/-1058) Total: -41 bytes
This commit is contained in:
Denis Vlasenko
parent
2f86d13dff
commit
e1ee48e0fd
@ -48,6 +48,10 @@ struct mod_list_t { /* two-way list of modules to process */
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struct mod_list_t * m_next;
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};
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struct include_conf_t {
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struct dep_t *first;
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struct dep_t *current;
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};
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static struct dep_t *depend;
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@ -242,21 +246,60 @@ static int is_conf_command(char *buffer, const char *command)
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* This function reads aliases and default module options from a configuration file
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* (/etc/modprobe.conf syntax). It supports includes (only files, no directories).
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*/
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static void include_conf(struct dep_t **first, struct dep_t **current, char *buffer, int buflen, int fd)
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static int FAST_FUNC include_conf_file_act(const char *filename,
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struct stat *statbuf UNUSED_PARAM,
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void *userdata,
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int depth UNUSED_PARAM);
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static int FAST_FUNC include_conf_dir_act(const char *filename UNUSED_PARAM,
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struct stat *statbuf UNUSED_PARAM,
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void *userdata UNUSED_PARAM,
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int depth)
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{
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if (depth > 1)
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return SKIP;
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return TRUE;
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}
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static int inline include_conf_recursive(struct include_conf_t *conf, const char *filename)
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{
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return recursive_action(filename, ACTION_RECURSE,
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include_conf_file_act,
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include_conf_dir_act,
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conf, 1);
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}
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static int FAST_FUNC include_conf_file_act(const char *filename,
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struct stat *statbuf UNUSED_PARAM,
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void *userdata,
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int depth UNUSED_PARAM)
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{
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struct include_conf_t *conf = (struct include_conf_t *) userdata;
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struct dep_t **first = &conf->first;
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struct dep_t **current = &conf->current;
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int continuation_line = 0;
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int fd;
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if (bb_basename(filename)[0] == '.')
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return TRUE;
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fd = open(filename, O_RDONLY);
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if (fd < 0)
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return FALSE;
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// alias parsing is not 100% correct (no correct handling of continuation lines within an alias)!
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while (reads(fd, buffer, buflen)) {
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while (reads(fd, line_buffer, sizeof(line_buffer))) {
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int l;
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*strchrnul(buffer, '#') = '\0';
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*strchrnul(line_buffer, '#') = '\0';
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l = strlen(buffer);
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l = strlen(line_buffer);
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while (l && isspace(buffer[l-1])) {
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buffer[l-1] = '\0';
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while (l && isspace(line_buffer[l-1])) {
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line_buffer[l-1] = '\0';
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l--;
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}
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@ -268,10 +311,10 @@ static void include_conf(struct dep_t **first, struct dep_t **current, char *buf
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if (continuation_line)
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continue;
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if (is_conf_command(buffer, "alias")) {
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if (is_conf_command(line_buffer, "alias")) {
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char *alias, *mod;
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if (parse_tag_value(buffer + 6, &alias, &mod)) {
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if (parse_tag_value(line_buffer + 6, &alias, &mod)) {
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/* handle alias as a module dependent on the aliased module */
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if (!*current) {
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(*first) = (*current) = xzalloc(sizeof(struct dep_t));
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@ -292,11 +335,11 @@ static void include_conf(struct dep_t **first, struct dep_t **current, char *buf
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}
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/*(*current)->m_next = NULL; - done by xzalloc */
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}
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} else if (is_conf_command(buffer, "options")) {
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} else if (is_conf_command(line_buffer, "options")) {
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char *mod, *opt;
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/* split the line in the module/alias name, and options */
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if (parse_tag_value(buffer + 8, &mod, &opt)) {
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if (parse_tag_value(line_buffer + 8, &mod, &opt)) {
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struct dep_t *dt;
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/* find the corresponding module */
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@ -315,22 +358,17 @@ static void include_conf(struct dep_t **first, struct dep_t **current, char *buf
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}
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}
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}
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} else if (is_conf_command(buffer, "include")) {
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int fdi;
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char *filename;
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} else if (is_conf_command(line_buffer, "include")) {
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char *includefile;
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filename = skip_whitespace(buffer + 8);
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fdi = open(filename, O_RDONLY);
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if (fdi >= 0) {
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include_conf(first, current, buffer, buflen, fdi);
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close(fdi);
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}
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includefile = skip_whitespace(line_buffer + 8);
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include_conf_recursive(conf, includefile);
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} else if (ENABLE_FEATURE_MODPROBE_BLACKLIST &&
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(is_conf_command(buffer, "blacklist"))) {
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(is_conf_command(line_buffer, "blacklist"))) {
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char *mod;
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struct dep_t *dt;
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mod = skip_whitespace(buffer + 10);
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mod = skip_whitespace(line_buffer + 10);
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for (dt = *first; dt; dt = dt->m_next) {
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if (strcmp(dt->m_name, mod) == 0)
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break;
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@ -339,6 +377,23 @@ static void include_conf(struct dep_t **first, struct dep_t **current, char *buf
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dt->m_isblacklisted = 1;
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}
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} /* while (reads(...)) */
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close(fd);
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return TRUE;
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}
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static int include_conf_file(struct include_conf_t *conf,
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const char *filename)
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{
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return include_conf_file_act(filename, NULL, conf, 0);
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}
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static int include_conf_file2(struct include_conf_t *conf,
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const char *filename, const char *oldname)
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{
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if (include_conf_file(conf, filename) == TRUE)
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return TRUE;
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return include_conf_file(conf, oldname);
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}
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/*
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@ -350,8 +405,7 @@ static struct dep_t *build_dep(void)
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{
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int fd;
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struct utsname un;
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struct dep_t *first = NULL;
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struct dep_t *current = NULL;
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struct include_conf_t conf = { NULL, NULL };
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char *filename;
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int continuation_line = 0;
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int k_version;
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@ -421,14 +475,14 @@ static struct dep_t *build_dep(void)
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mod = xstrndup(mods, dot - mods);
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/* enqueue new module */
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if (!current) {
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first = current = xzalloc(sizeof(struct dep_t));
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if (!conf.current) {
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conf.first = conf.current = xzalloc(sizeof(struct dep_t));
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} else {
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current->m_next = xzalloc(sizeof(struct dep_t));
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current = current->m_next;
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conf.current->m_next = xzalloc(sizeof(struct dep_t));
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conf.current = conf.current->m_next;
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}
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current->m_name = mod;
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current->m_path = xstrdup(modpath);
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conf.current->m_name = mod;
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conf.current->m_path = xstrdup(modpath);
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/*current->m_options = NULL; - xzalloc did it*/
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/*current->m_isalias = 0;*/
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/*current->m_depcnt = 0;*/
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@ -482,8 +536,8 @@ static struct dep_t *build_dep(void)
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dep = xstrndup(deps, next - deps - ext + 1);
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/* Add the new dependable module name */
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current->m_deparr = xrealloc_vector(current->m_deparr, 2, current->m_depcnt);
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current->m_deparr[current->m_depcnt++] = dep;
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conf.current->m_deparr = xrealloc_vector(conf.current->m_deparr, 2, conf.current->m_depcnt);
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conf.current->m_deparr[conf.current->m_depcnt++] = dep;
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p = next + 2;
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} while (next < end);
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@ -500,52 +554,41 @@ static struct dep_t *build_dep(void)
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* >=2.6: we only care about modprobe.conf
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* <=2.4: we care about modules.conf and conf.modules
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*/
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if (ENABLE_FEATURE_2_6_MODULES
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&& (fd = open("/etc/modprobe.conf", O_RDONLY)) < 0)
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if (ENABLE_FEATURE_2_4_MODULES
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&& (fd = open("/etc/modules.conf", O_RDONLY)) < 0)
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if (ENABLE_FEATURE_2_4_MODULES)
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fd = open("/etc/conf.modules", O_RDONLY);
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{
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int r = FALSE;
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if (fd >= 0) {
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include_conf(&first, ¤t, line_buffer, sizeof(line_buffer), fd);
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close(fd);
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if (ENABLE_FEATURE_2_6_MODULES) {
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if (include_conf_file(&conf, "/etc/modprobe.conf"))
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r = TRUE;
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if (include_conf_recursive(&conf, "/etc/modprobe.d"))
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r = TRUE;
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}
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if (ENABLE_FEATURE_2_4_MODULES && !r)
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include_conf_file2(&conf,
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"/etc/modules.conf",
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"/etc/conf.modules");
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}
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/* Only 2.6 has a modules.alias file */
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if (ENABLE_FEATURE_2_6_MODULES) {
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/* Parse kernel-declared module aliases */
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filename = xasprintf(CONFIG_DEFAULT_MODULES_DIR"/%s/modules.alias", un.release);
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fd = open(filename, O_RDONLY);
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if (fd < 0) {
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/* Ok, that didn't work. Fall back to looking in /lib/modules */
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fd = open(CONFIG_DEFAULT_MODULES_DIR"/modules.alias", O_RDONLY);
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}
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include_conf_file2(&conf,
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filename,
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CONFIG_DEFAULT_MODULES_DIR"/modules.alias");
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if (ENABLE_FEATURE_CLEAN_UP)
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free(filename);
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if (fd >= 0) {
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include_conf(&first, ¤t, line_buffer, sizeof(line_buffer), fd);
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close(fd);
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}
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/* Parse kernel-declared symbol aliases */
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filename = xasprintf(CONFIG_DEFAULT_MODULES_DIR"/%s/modules.symbols", un.release);
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fd = open(filename, O_RDONLY);
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if (fd < 0) {
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/* Ok, that didn't work. Fall back to looking in /lib/modules */
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fd = open(CONFIG_DEFAULT_MODULES_DIR"/modules.symbols", O_RDONLY);
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}
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include_conf_file2(&conf,
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filename,
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CONFIG_DEFAULT_MODULES_DIR"/modules.symbols");
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if (ENABLE_FEATURE_CLEAN_UP)
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free(filename);
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if (fd >= 0) {
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include_conf(&first, ¤t, line_buffer, sizeof(line_buffer), fd);
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close(fd);
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}
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}
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return first;
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return conf.first;
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}
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/* return 1 = loaded, 0 = not loaded, -1 = can't tell */
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