#include <libubox/utils.h>
#include <libubox/ulog.h>
#include <libubox/kvlist.h>
+#include <libubox/list.h>
#define DEF_MOD_PATH "/modules/%s/"
+#define MOD_BUILTIN "modules.builtin"
+#define MOD_BUILTIN_MODINFO "modules.builtin.modinfo"
/* duplicated from in-kernel include/linux/module.h */
#define MODULE_NAME_LEN (64 - sizeof(unsigned long))
+struct param {
+ char *name;
+ char *desc;
+ char *type;
+ struct list_head list;
+};
+
enum {
+ BUILTIN,
SCANNED,
PROBE,
LOADED,
{
size_t buf_len = 0;
char *buf = NULL;
+ int rv = -1;
FILE *fp;
fp = fopen("/proc/modules", "r");
/* possibly a module outside /lib/modules/<ver>/ */
n = alloc_module(m.name, NULL, 0, m.depends, m.size);
}
+ if (!n) {
+ ULOG_ERR("Failed to allocate memory for module\n");
+ goto out;
+ }
+
n->usage = m.usage;
n->state = LOADED;
}
+ rv = 0;
+out:
free(buf);
fclose(fp);
- return 0;
+ return rv;
}
-static struct module* get_module_info(const char *module, const char *name)
+static char *mmap_modinfo(const char *module, const char *name, struct stat *s, unsigned int *offset, unsigned int *size)
{
- int fd = open(module, O_RDONLY);
- unsigned int offset, size;
- char *map = MAP_FAILED, *strings, *dep = NULL;
- const char **aliases = NULL;
- const char **aliasesr;
- int naliases = 0;
- struct module *m = NULL;
- struct stat s;
+ const bool is_builtin = (module == NULL);
+ const char *mpath = NULL;
+ char *map = MAP_FAILED;
+ char path[350], **f;
+ int fd = -1;
+
+ if (is_builtin)
+ for (f = module_folders; *f; f++) {
+ snprintf(path, sizeof(path), "%s%s", *f, MOD_BUILTIN_MODINFO);
+ if (!stat(path, s) && S_ISREG(s->st_mode)) {
+ mpath = path;
+ break;
+ }
+ }
+ else
+ mpath = module;
+
+ if (!mpath) {
+ ULOG_ERR("cannot find modinfo path of module - %s\n", name);
+ goto out;
+ }
+ fd = open(mpath, O_RDONLY);
if (fd < 0) {
- ULOG_ERR("failed to open %s\n", module);
+ ULOG_ERR("failed to open %s\n", mpath);
goto out;
}
- if (fstat(fd, &s) == -1) {
- ULOG_ERR("failed to stat %s\n", module);
+ if (fstat(fd, s) == -1) {
+ ULOG_ERR("failed to stat %s\n", mpath);
goto out;
}
- map = mmap(NULL, s.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ map = mmap(NULL, s->st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (map == MAP_FAILED) {
- ULOG_ERR("failed to mmap %s\n", module);
+ ULOG_ERR("failed to mmap %s\n", mpath);
goto out;
}
- if (elf_find_section(map, ".modinfo", &offset, &size)) {
- ULOG_ERR("failed to load the .modinfo section from %s\n", module);
- goto out;
+ if (is_builtin) {
+ *offset = 0;
+ *size = s->st_size;
+ } else if (elf_find_section(map, ".modinfo", offset, size)) {
+ ULOG_ERR("failed to load the .modinfo section from %s\n", mpath);
+ munmap(map, s->st_size);
+ map = MAP_FAILED;
}
+out:
+ if (fd >= 0)
+ close(fd);
+ return map;
+}
+
+static struct module* get_module_info(const char *module, const char *name)
+{
+ const bool is_builtin = (module == NULL);
+ unsigned int offset, size;
+ char *map, *strings, *dep = NULL;
+ const char **aliases = NULL;
+ const char **aliasesr;
+ int naliases = 0;
+ struct module *m = NULL;
+ struct stat s;
+
+ map = mmap_modinfo(module, name, &s, &offset, &size);
+ if (map == MAP_FAILED)
+ goto out;
+
strings = map + offset;
while (true) {
+ char *end = map + offset + size;
char *sep;
int len;
- while (!strings[0])
+ while ((strings < end) && !strings[0])
strings++;
- if (strings >= map + offset + size)
+ if (strings >= end)
break;
+ if (is_builtin) {
+ sep = strstr(strings, ".");
+ if (!sep)
+ break;
+ if (strlen(name) == (sep - strings) &&
+ !strncmp(strings, name, sep - strings))
+ strings = sep + 1;
+ else
+ goto next_string;
+ }
sep = strstr(strings, "=");
if (!sep)
break;
aliases = aliasesr;
aliases[naliases++] = sep;
}
+next_string:
strings = &sep[strlen(sep)];
}
- m = alloc_module(name, aliases, naliases, dep, s.st_size);
+ m = alloc_module(name, aliases, naliases, dep, is_builtin ? 0 : s.st_size);
if (m)
- m->state = SCANNED;
+ m->state = is_builtin ? BUILTIN : SCANNED;
out:
if (map != MAP_FAILED)
munmap(map, s.st_size);
- if (fd >= 0)
- close(fd);
-
free(aliases);
return m;
}
+static int scan_builtin_modules(void)
+{
+ char **p, path[350];
+ size_t buf_len = 0;
+ char *buf = NULL;
+ struct stat st;
+ FILE *fp = NULL;
+ int rv = -1;
+
+ if (!module_folders && init_module_folders())
+ return -1;
+ for (p = module_folders; *p; p++) {
+ snprintf(path, sizeof(path), "%s%s", *p, MOD_BUILTIN);
+ fp = fopen(path, "r");
+ if (!fp)
+ continue;
+
+ if (!fstat(fileno(fp), &st) && S_ISREG(st.st_mode))
+ break;
+
+ /* Not regular file, close it and check next */
+ fclose(fp);
+ fp = NULL;
+ }
+ if (!fp)
+ return 0; /* OK if modules.builtin unavailable */
+
+ while (getline(&buf, &buf_len, fp) > 0) {
+ struct module *m;
+ char *name;
+
+ name = get_module_name(buf);
+ if (!name)
+ continue;
+ m = find_module(name);
+ if (m && !strcmp(m->name, name)) {
+ ULOG_WARN("found duplicate builtin module %s\n", name);
+ continue;
+ }
+ m = get_module_info(NULL, name);
+ if (!m) {
+ ULOG_ERR("failed to find info for builtin module %s\n", name);
+ goto err;
+ }
+ }
+
+ rv = 0;
+err:
+ free(buf);
+ fclose(fp);
+
+ return rv;
+}
+
static int scan_module_folder(const char *dir)
{
int gl_flags = GLOB_NOESCAPE | GLOB_MARK;
- struct utsname ver;
char *path;
glob_t gl;
int j, rv = 0;
- uname(&ver);
path = alloca(strlen(dir) + sizeof("*.ko") + 1);
sprintf(path, "%s*.ko", dir);
return rv;
}
-static int print_modinfo(char *module)
+static int print_modinfo(const struct module *m)
{
- int fd = open(module, O_RDONLY);
+ const bool is_builtin = (m->state == BUILTIN);
unsigned int offset, size;
+ struct param *p;
struct stat s;
- char *map = MAP_FAILED, *strings;
+ char *map, *strings, *mpath;
int rv = -1;
- if (fd < 0) {
- ULOG_ERR("failed to open %s\n", module);
- goto out;
- }
-
- if (fstat(fd, &s) == -1) {
- ULOG_ERR("failed to stat %s\n", module);
- goto out;
- }
-
- map = mmap(NULL, s.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
- if (map == MAP_FAILED) {
- ULOG_ERR("failed to mmap %s\n", module);
- goto out;
- }
+ LIST_HEAD(params);
- if (elf_find_section(map, ".modinfo", &offset, &size)) {
- ULOG_ERR("failed to load the .modinfo section from %s\n", module);
+ mpath = get_module_path(m->name);
+ map = mmap_modinfo(mpath, m->name, &s, &offset, &size);
+ if (map == MAP_FAILED)
goto out;
- }
strings = map + offset;
- printf("module:\t\t%s\n", module);
+ if (is_builtin)
+ printf("name:\t\t%s\n", m->name);
+ printf("filename:\t%s\n", is_builtin ? "(builtin)" : mpath);
while (true) {
+ char *end = map + offset + size;
+ char *pname, *pdata;
char *dup = NULL;
- char *sep;
+ char *sep, *sep2;
- while (!strings[0])
+ while ((strings < end) && !strings[0])
strings++;
- if (strings >= map + offset + size)
+ if (strings >= end)
break;
+ if (is_builtin) {
+ sep = strstr(strings, ".");
+ if (!sep)
+ break;
+ if (strlen(m->name) == (sep - strings) &&
+ !strncmp(strings, m->name, sep - strings))
+ strings = sep + 1;
+ else
+ goto next_string;
+ }
sep = strstr(strings, "=");
if (!sep)
break;
printf("%s:\t\t%s\n", dup, sep);
else
printf("%s:\t%s\n", dup, sep);
+ } else {
+ sep2 = strstr(sep, ":");
+ if (!sep2) {
+ free(dup);
+ break;
+ }
+
+ pname = strndup(sep, sep2 - sep);
+ sep2++;
+ pdata = strdup(sep2);
+
+ list_for_each_entry(p, ¶ms, list)
+ if (!strcmp(pname, p->name))
+ break;
+
+ if (list_entry_is_h(p, ¶ms, list)) {
+ p = alloca(sizeof(*p));
+ p->name = pname;
+ p->desc = p->type = NULL;
+ list_add(&p->list, ¶ms);
+ } else {
+ free(pname);
+ }
+
+ if (!strcmp(dup, "parmtype"))
+ p->type = pdata;
+ else
+ p->desc = pdata;
}
+
+ free(dup);
+next_string:
strings = &sep[strlen(sep)];
- if (dup)
- free(dup);
+ }
+
+ list_for_each_entry(p, ¶ms, list) {
+ printf("parm:\t\t%s", p->name);
+ if (p->desc)
+ printf(":%s", p->desc);
+ if (p->type)
+ printf(" (%s)", p->type);
+ printf("\n");
+ free(p->name);
+ free(p->desc);
+ free(p->type);
}
rv = 0;
if (map != MAP_FAILED)
munmap(map, s.st_size);
- if (fd >= 0)
- close(fd);
-
return rv;
}
struct stat s;
int fd, ret = -1;
+ if (!path) {
+ ULOG_ERR("Path not specified\n");
+ return ret;
+ }
+
if (stat(path, &s)) {
ULOG_ERR("missing module %s\n", path);
return ret;
if (scan_loaded_modules())
return -1;
+ if (scan_builtin_modules())
+ return -1;
+
name = get_module_name(argv[1]);
m = find_module(name);
if (!m) {
ULOG_ERR("module is not loaded\n");
return -1;
}
+ if (m->state == BUILTIN) {
+ ULOG_ERR("module is builtin\n");
+ return -1;
+ }
ret = syscall(__NR_delete_module, m->name, 0);
if (ret)
if (scan_module_folders())
return -1;
+ if (scan_builtin_modules())
+ return -1;
+
name = get_module_name(argv[1]);
m = find_module(name);
if (!m) {
return -1;
}
- name = get_module_path(m->name);
- if (!name) {
- ULOG_ERR("cannot find path of module - %s\n", m->name);
- return -1;
- }
-
- print_modinfo(name);
+ print_modinfo(m);
return 0;
}
if (scan_loaded_modules())
return -1;
+ if (scan_builtin_modules())
+ return -1;
+
do {
char *name;
} else if (m && m->state == LOADED) {
if (!quiet)
ULOG_INFO("%s is already loaded\n", name);
+ } else if (m && m->state == BUILTIN) {
+ if (!quiet)
+ ULOG_INFO("%s is builtin\n", name);
} else if (!m) {
if (!quiet)
ULOG_ERR("failed to find a module named %s\n", name);
continue;
}
}
+
+ fclose(f);
}
int main(int argc, char **argv)
projects / project / ubox.git / blobdiff