419 lines
18 KiB
Diff
419 lines
18 KiB
Diff
From eab32bda801e539c276f1b18e7c2b691eeab3d14 Mon Sep 17 00:00:00 2001
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From: Harald Hoyer <harald@redhat.com>
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Date: Fri, 15 Apr 2016 15:29:52 +0200
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Subject: [PATCH] dracut-install: make use of _cleanup_ macros and improve
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hostonly check
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If a module is renamed or another module takes care of the old one,
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all of the alias strings have to be checked against the current set of
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loaded modules.
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This is still incomplete, because to be absolutely correct, all the
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/sys/*...*/modalias files would have to be checked, if they match the
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modules alias strings.
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---
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install/dracut-install.c | 180 ++++++++++++++++++++++++++++++++++-------------
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1 file changed, 131 insertions(+), 49 deletions(-)
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diff --git a/install/dracut-install.c b/install/dracut-install.c
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index bef08da..9a0d53f 100644
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--- a/install/dracut-install.c
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+++ b/install/dracut-install.c
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@@ -66,6 +66,7 @@ static char *logfile = NULL;
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FILE *logfile_f = NULL;
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static Hashmap *items = NULL;
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static Hashmap *items_failed = NULL;
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+static Hashmap *modules_loaded = NULL;
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static regex_t mod_filter_path;
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static regex_t mod_filter_nopath;
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static regex_t mod_filter_symbol;
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@@ -79,6 +80,39 @@ static bool arg_mod_filter_noname = false;
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static int dracut_install(const char *src, const char *dst, bool isdir, bool resolvedeps, bool hashdst);
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+
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+
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+static inline void kmod_module_unref_listp(struct kmod_list **p) {
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+ if (*p)
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+ kmod_module_unref_list(*p);
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+}
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+#define _cleanup_kmod_module_unref_list_ _cleanup_(kmod_module_unref_listp)
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+
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+static inline void kmod_module_info_free_listp(struct kmod_list **p) {
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+ if (*p)
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+ kmod_module_info_free_list(*p);
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+}
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+#define _cleanup_kmod_module_info_free_list_ _cleanup_(kmod_module_info_free_listp)
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+
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+static inline void kmod_unrefp(struct kmod_ctx **p) {
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+ kmod_unref(*p);
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+}
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+#define _cleanup_kmod_unref_ _cleanup_(kmod_unrefp)
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+
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+static inline void kmod_module_dependency_symbols_free_listp(struct kmod_list **p) {
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+ if (*p)
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+ kmod_module_dependency_symbols_free_list(*p);
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+}
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+#define _cleanup_kmod_module_dependency_symbols_free_list_ _cleanup_(kmod_module_dependency_symbols_free_listp)
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+
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+static inline void fts_closep(FTS **p) {
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+ if (*p)
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+ fts_close(*p);
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+}
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+#define _cleanup_fts_close_ _cleanup_(fts_closep)
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+
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+
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+
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static size_t dir_len(char const *file)
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{
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size_t length;
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@@ -1058,7 +1092,8 @@ static int install_all(int argc, char **argv)
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static int install_firmware(struct kmod_module *mod)
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{
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- struct kmod_list *l, *list = NULL;
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+ struct kmod_list *l;
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+ _cleanup_kmod_module_info_free_list_ struct kmod_list *list = NULL;
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int ret;
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char **q;
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@@ -1072,7 +1107,6 @@ static int install_firmware(struct kmod_module *mod)
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kmod_list_foreach(l, list) {
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const char *key = kmod_module_info_get_key(l);
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const char *value = NULL;
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- char *fwpath = NULL;
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if (!streq("firmware", key))
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continue;
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@@ -1081,6 +1115,7 @@ static int install_firmware(struct kmod_module *mod)
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log_debug("Firmware %s", value);
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ret = -1;
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STRV_FOREACH(q, firmwaredirs) {
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+ _cleanup_free_ char *fwpath = NULL;
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struct stat sb;
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int r;
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@@ -1092,8 +1127,6 @@ static int install_firmware(struct kmod_module *mod)
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if (stat(fwpath, &sb) != 0) {
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log_debug("stat(%s) != 0", fwpath);
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- free(fwpath);
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- fwpath = NULL;
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continue;
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}
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@@ -1111,7 +1144,8 @@ static int install_firmware(struct kmod_module *mod)
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static bool check_module_symbols(struct kmod_module *mod)
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{
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- struct kmod_list *itr, *deplist = NULL;
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+ struct kmod_list *itr;
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+ _cleanup_kmod_module_dependency_symbols_free_list_ struct kmod_list *deplist = NULL;
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if (!arg_mod_filter_symbol && !arg_mod_filter_nosymbol)
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return true;
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@@ -1128,7 +1162,6 @@ static bool check_module_symbols(struct kmod_module *mod)
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const char *symbol = kmod_module_symbol_get_symbol(itr);
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// log_debug("Checking symbol %s", symbol);
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if (regexec(&mod_filter_nosymbol, symbol, 0, NULL, 0) == 0) {
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- kmod_module_dependency_symbols_free_list(deplist);
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log_debug("Module %s: symbol %s matched exclusion filter", kmod_module_get_name(mod), symbol);
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return false;
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}
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@@ -1140,20 +1173,16 @@ static bool check_module_symbols(struct kmod_module *mod)
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const char *symbol = kmod_module_dependency_symbol_get_symbol(itr);
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// log_debug("Checking symbol %s", symbol);
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if (regexec(&mod_filter_symbol, symbol, 0, NULL, 0) == 0) {
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- kmod_module_dependency_symbols_free_list(deplist);
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log_debug("Module %s: symbol %s matched inclusion filter", kmod_module_get_name(mod), symbol);
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return true;
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}
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}
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- kmod_module_dependency_symbols_free_list(deplist);
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return false;
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}
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- kmod_module_dependency_symbols_free_list(deplist);
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return true;
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}
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-
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static bool check_module_path(const char *path)
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{
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if (arg_mod_filter_nopath && (regexec(&mod_filter_nopath, path, 0, NULL, 0) == 0)) {
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@@ -1168,14 +1197,23 @@ static bool check_module_path(const char *path)
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return true;
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}
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+static bool check_module_hostonly(struct kmod_module *mod)
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+{
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+ const char *name = kmod_module_get_name(mod);
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+
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+ if (check_hashmap(modules_loaded, name))
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+ return true;
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+
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+ return false;
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+}
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+
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static int install_module(struct kmod_module *mod)
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{
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int ret = 0;
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- int state;
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- struct kmod_list *itr, *modlist = NULL;
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+ struct kmod_list *itr;
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+ _cleanup_kmod_module_unref_list_ struct kmod_list *modlist = NULL;
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const char *path = NULL;
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const char *name = NULL;
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- state = kmod_module_get_initstate(mod);
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name = kmod_module_get_name(mod);
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if (arg_mod_filter_noname && (regexec(&mod_filter_noname, name, 0, NULL, 0) == 0)) {
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@@ -1183,7 +1221,7 @@ static int install_module(struct kmod_module *mod)
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return 0;
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}
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- if (arg_hostonly && (state != KMOD_MODULE_BUILTIN) && (state != KMOD_MODULE_LIVE)) {
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+ if (arg_hostonly && ! check_module_hostonly(mod)) {
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log_debug("dracut_install '%s' not hostonly", name);
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return 0;
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}
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@@ -1232,15 +1270,17 @@ static int install_module(struct kmod_module *mod)
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}
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kmod_module_unref(mod);
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}
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- kmod_module_unref_list(modlist);
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return ret;
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}
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static int install_modules(int argc, char **argv)
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{
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- struct kmod_ctx *ctx = NULL;
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- struct kmod_list *itr, *modlist = NULL;
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+ _cleanup_kmod_unref_ struct kmod_ctx *ctx = NULL;
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+ struct kmod_list *loaded_list = NULL;
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+ struct kmod_list *itr, *l;
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+ int err;
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+
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struct kmod_module *mod = NULL, *mod_o = NULL;
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const char *modname = NULL;
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@@ -1248,12 +1288,48 @@ static int install_modules(int argc, char **argv)
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ctx = kmod_new(kerneldir, NULL);
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+ err = kmod_module_new_from_loaded(ctx, &loaded_list);
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+ if (err < 0) {
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+ errno = err;
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+ log_error("Could not get list of loaded modules: %m");
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+ return err;
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+ }
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+
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+ kmod_list_foreach(itr, loaded_list) {
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+ _cleanup_kmod_module_unref_list_ struct kmod_list *modlist = NULL;
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+
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+ struct kmod_module *mod = kmod_module_get_module(itr);
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+ char *name = strdup(kmod_module_get_name(mod));
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+ hashmap_put(modules_loaded, name, name);
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+ kmod_module_unref(mod);
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+
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+ /* also put the modules from the new kernel in the hashmap,
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+ * which resolve the name as an alias, in case a kernel module is
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+ * renamed.
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+ */
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+ err = kmod_module_new_from_lookup(ctx, name, &modlist);
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+ if (err < 0)
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+ continue;
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+ if (!modlist)
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+ continue;
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+ kmod_list_foreach(l, modlist) {
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+ mod = kmod_module_get_module(l);
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+ char *name = strdup(kmod_module_get_name(mod));
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+ hashmap_put(modules_loaded, name, name);
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+ kmod_module_unref(mod);
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+ }
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+ }
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+ kmod_module_unref_list(loaded_list);
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+
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for (i = 0; i < argc; i++) {
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int r = 0;
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int ret = -1;
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+
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log_debug("Handle module '%s'", argv[i]);
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if (argv[i][0] == '/') {
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+ _cleanup_kmod_module_unref_list_ struct kmod_list *modlist = NULL;
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+
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r = kmod_module_new_from_path(ctx, argv[i], &mod_o);
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if (r < 0) {
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log_debug("Failed to lookup modules path '%s': %m", argv[i]);
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@@ -1263,6 +1339,7 @@ static int install_modules(int argc, char **argv)
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}
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/* Check, if we have to load another module with that name instead */
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modname = kmod_module_get_name(mod_o);
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+
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if (!modname) {
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if (!arg_optional) {
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if (!arg_silent)
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@@ -1272,8 +1349,11 @@ static int install_modules(int argc, char **argv)
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log_info("Failed to get name for module '%s'", argv[i]);
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continue;
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}
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+
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r = kmod_module_new_from_lookup(ctx, modname, &modlist);
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kmod_module_unref(mod_o);
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+ mod_o = NULL;
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+
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if (r < 0) {
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if (!arg_optional) {
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if (!arg_silent)
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@@ -1303,37 +1383,38 @@ static int install_modules(int argc, char **argv)
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};
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ret = ( ret == 0 ? 0 : r );
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}
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- kmod_module_unref_list(modlist);
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- modlist = 0;
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} else if (argv[i][0] == '=') {
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- char *path1, *path2, *path3;
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- FTS *fts;
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+ _cleanup_free_ char *path1 = NULL, *path2 = NULL, *path3 = NULL;
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+ _cleanup_fts_close_ FTS *fts = NULL;
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+
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log_debug("Handling =%s", &argv[i][1]);
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/* FIXME and add more paths*/
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- {
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- int r;
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- r = asprintf(&path2, "%s/kernel/%s", kerneldir, &argv[i][1]);
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- if (r < 0) {
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- log_error("Out of memory!");
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- exit(EXIT_FAILURE);
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- }
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+ r = asprintf(&path2, "%s/kernel/%s", kerneldir, &argv[i][1]);
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+ if (r < 0) {
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+ log_error("Out of memory!");
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+ exit(EXIT_FAILURE);
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+ }
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- r = asprintf(&path1, "%s/extra/%s", kerneldir, &argv[i][1]);
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- if (r < 0) {
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- log_error("Out of memory!");
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- exit(EXIT_FAILURE);
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- }
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+ r = asprintf(&path1, "%s/extra/%s", kerneldir, &argv[i][1]);
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+ if (r < 0) {
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+ log_error("Out of memory!");
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+ exit(EXIT_FAILURE);
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+ }
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- r = asprintf(&path3, "%s/updates/%s", kerneldir, &argv[i][1]);
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- if (r < 0) {
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- log_error("Out of memory!");
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- exit(EXIT_FAILURE);
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- }
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+ r = asprintf(&path3, "%s/updates/%s", kerneldir, &argv[i][1]);
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+ if (r < 0) {
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+ log_error("Out of memory!");
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+ exit(EXIT_FAILURE);
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+ }
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+ {
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char *paths[] = { path1, path2, path3, NULL };
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fts = fts_open(paths, FTS_COMFOLLOW|FTS_NOCHDIR|FTS_NOSTAT|FTS_LOGICAL, NULL);
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}
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+
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for (FTSENT *ftsent = fts_read(fts); ftsent != NULL; ftsent = fts_read(fts)) {
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+ _cleanup_kmod_module_unref_list_ struct kmod_list *modlist = NULL;
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+
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if((ftsent->fts_info == FTS_D) && !check_module_path(ftsent->fts_accpath)) {
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fts_set(fts, ftsent, FTS_SKIP);
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log_debug("Skipping %s", ftsent->fts_accpath);
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@@ -1356,6 +1437,7 @@ static int install_modules(int argc, char **argv)
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/* Check, if we have to load another module with that name instead */
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modname = kmod_module_get_name(mod_o);
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+
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if (!modname) {
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log_error("Failed to get name for module '%s'", ftsent->fts_accpath);
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if (!arg_optional) {
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@@ -1365,18 +1447,19 @@ static int install_modules(int argc, char **argv)
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}
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r = kmod_module_new_from_lookup(ctx, modname, &modlist);
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kmod_module_unref(mod_o);
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+ mod_o = NULL;
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+
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if (r < 0) {
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log_error("Failed to lookup alias '%s': %m", modname);
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- kmod_module_unref_list(modlist);
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if (!arg_optional) {
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return -ENOENT;
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}
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continue;
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}
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+
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if (!modlist) {
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log_error("Failed to find module '%s' %s", modname,
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ftsent->fts_accpath);
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- kmod_module_unref_list(modlist);
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if (!arg_optional) {
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return -ENOENT;
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}
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@@ -1393,18 +1476,14 @@ static int install_modules(int argc, char **argv)
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};
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ret = ( ret == 0 ? 0 : r );
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}
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- kmod_module_unref_list(modlist);
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- modlist = 0;
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}
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if (errno) {
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log_error("FTS ERROR: %m");
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}
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- fts_close(fts);
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- free(path1); path1 = NULL;
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- free(path2); path2 = NULL;
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- free(path3); path3 = NULL;
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} else {
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+ _cleanup_kmod_module_unref_list_ struct kmod_list *modlist = NULL;
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char *modname = argv[i];
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+
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if (endswith(modname, ".ko")) {
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int len = strlen(modname);
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modname[len-3]=0;
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@@ -1443,8 +1522,6 @@ static int install_modules(int argc, char **argv)
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};
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ret = ( ret == 0 ? 0 : r );
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}
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- kmod_module_unref_list(modlist);
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- modlist = 0;
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}
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if ((ret != 0) && (!arg_optional)) {
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@@ -1513,8 +1590,9 @@ int main(int argc, char **argv)
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items = hashmap_new(string_hash_func, string_compare_func);
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items_failed = hashmap_new(string_hash_func, string_compare_func);
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+ modules_loaded = hashmap_new(string_hash_func, string_compare_func);
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- if (!items || !items_failed) {
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+ if (!items || !items_failed || !modules_loaded) {
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log_error("Out of memory");
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r = EXIT_FAILURE;
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goto finish;
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@@ -1570,6 +1648,9 @@ int main(int argc, char **argv)
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if (logfile_f)
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fclose(logfile_f);
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+ while ((i = hashmap_steal_first(modules_loaded)))
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+ item_free(i);
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+
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while ((i = hashmap_steal_first(items)))
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item_free(i);
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@@ -1578,6 +1659,7 @@ int main(int argc, char **argv)
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hashmap_free(items);
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hashmap_free(items_failed);
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+ hashmap_free(modules_loaded);
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free(destrootdir);
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strv_free(firmwaredirs);
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