X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevinfo.c;h=567193adc7f8949f229d74531b87dca7520a51cf;hp=0089df46b651571a11675fee365da8631bad7469;hb=21dabee8a78bdde10bdb23bd3002c8aa09a161d3;hpb=24ca5c3398eb61380e0add8b9ffac1651a008bb3 diff --git a/udevinfo.c b/udevinfo.c index 0089df46b..567193adc 100644 --- a/udevinfo.c +++ b/udevinfo.c @@ -21,18 +21,14 @@ #include #include #include +#include #include #include #include +#include #include -#include "libsysfs/sysfs/libsysfs.h" -#include "udev_libc_wrapper.h" #include "udev.h" -#include "udev_utils.h" -#include "udev_version.h" -#include "udev_db.h" -#include "logging.h" #ifdef USE_LOG @@ -49,144 +45,119 @@ void log_message (int priority, const char *format, ...) } #endif -static void print_all_attributes(struct dlist *attr_list) +static void print_all_attributes(const char *devpath) { - struct sysfs_attribute *attr; - char value[VALUE_SIZE]; - size_t len; - - dlist_for_each_data(attr_list, attr, struct sysfs_attribute) { - if (attr->value == NULL) - continue; - len = strlcpy(value, attr->value, sizeof(value)); - if (len >= sizeof(value)) { - dbg("attribute value of '%s' too long, skip", attr->name); - continue; - } + char path[PATH_SIZE]; + DIR *dir; + struct dirent *dent; + + strlcpy(path, sysfs_path, sizeof(path)); + strlcat(path, devpath, sizeof(path)); + + dir = opendir(path); + if (dir != NULL) { + for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { + char *attr_value; + char value[NAME_SIZE]; + size_t len; + + attr_value = sysfs_attr_get_value(devpath, dent->d_name); + if (attr_value == NULL) + continue; + len = strlcpy(value, attr_value, sizeof(value)); + dbg("attr '%s'='%s'(%zi)", dent->d_name, value, len); + + /* remove trailing newlines */ + while (len && value[len-1] == '\n') + value[--len] = '\0'; + + /* skip nonprintable attributes */ + while (len && isprint(value[len-1])) + len--; + if (len) { + dbg("attribute value of '%s' non-printable, skip", dent->d_name); + continue; + } - /* remove trailing newlines */ - while (len && value[len-1] == '\n') - value[--len] = '\0'; - /* skip nonprintable attributes */ - while (len && isprint(value[len-1])) - len--; - if (len) { - dbg("attribute value of '%s' non-printable, skip", attr->name); - continue; + replace_untrusted_chars(value); + printf(" SYSFS{%s}==\"%s\"\n", dent->d_name, value); } - replace_untrusted_chars(value); - printf(" SYSFS{%s}==\"%s\"\n", attr->name, value); } printf("\n"); } -static void print_record(struct udevice *udev) +static int print_device_chain(const char *devpath) { - struct name_entry *name_loop; - - printf("P: %s\n", udev->devpath); - printf("N: %s\n", udev->name); - list_for_each_entry(name_loop, &udev->symlink_list, node) - printf("S: %s\n", name_loop->name); - list_for_each_entry(name_loop, &udev->env_list, node) - printf("E: %s\n", name_loop->name); -} + struct sysfs_device *dev; + + printf("\n" + "Udevinfo starts with the device specified by the devpath and then\n" + "walks up the chain of parent devices. It prints for every device\n" + "found, all possible attributes in the udev rules key format.\n" + "A rule to match, can be composed by the attributes of the device\n" + "and the attributes from one single parent device.\n" + "\n"); -static int print_device_chain(const char *path) -{ - struct sysfs_class_device *class_dev; - struct sysfs_class_device *class_dev_parent; - struct sysfs_attribute *attr; - struct sysfs_device *sysfs_dev; - struct dlist *attr_list; - int retval = 0; - - /* get the class dev */ - class_dev = sysfs_open_class_device_path(path); - if (class_dev == NULL) { - fprintf(stderr, "couldn't get the class device\n"); + dev = sysfs_device_get(devpath); + if (dev == NULL) return -1; - } - printf("\nudevinfo starts with the device the node belongs to and then walks up the\n" - "device chain, to print for every device found, all possibly useful attributes\n" - "in the udev key format.\n" - "Only attributes within one device section may be used together in one rule,\n" - "to match the device for which the node will be created.\n" - "\n"); - - /* look for the 'dev' file */ - attr = sysfs_get_classdev_attr(class_dev, "dev"); - if (attr != NULL) - printf("device '%s' has major:minor %s", class_dev->path, attr->value); + printf(" looking at device '%s':\n", dev->devpath); + printf(" KERNEL==\"%s\"\n", dev->kernel_name); + printf(" SUBSYSTEM==\"%s\"\n", dev->subsystem); + print_all_attributes(dev->devpath); - /* open sysfs class device directory and print all attributes */ - printf(" looking at class device '%s':\n", class_dev->path); - printf(" KERNEL==\"%s\"\n", class_dev->name); - printf(" SUBSYSTEM==\"%s\"\n", class_dev->classname); + /* walk up the chain of devices */ + while (1) { + dev = sysfs_device_get_parent(dev); + if (dev == NULL) + break; + printf(" looking at parent device '%s':\n", dev->devpath); + printf(" ID==\"%s\"\n", dev->kernel_name); + printf(" BUS==\"%s\"\n", dev->subsystem); + printf(" DRIVER==\"%s\"\n", dev->driver); - attr_list = sysfs_get_classdev_attributes(class_dev); - if (attr_list == NULL) { - fprintf(stderr, "couldn't open class device directory\n"); - retval = -1; - goto exit; + print_all_attributes(dev->devpath); } - print_all_attributes(attr_list); - - /* get the device link (if parent exists look here) */ - class_dev_parent = sysfs_get_classdev_parent(class_dev); - if (class_dev_parent != NULL) - sysfs_dev = sysfs_get_classdev_device(class_dev_parent); - else - sysfs_dev = sysfs_get_classdev_device(class_dev); - - if (sysfs_dev != NULL) - printf("follow the \"device\"-link to the physical device:\n"); - - /* look the device chain upwards */ - while (sysfs_dev != NULL) { - printf(" looking at the device chain at '%s':\n", sysfs_dev->path); - printf(" BUS==\"%s\"\n", sysfs_dev->bus); - printf(" ID==\"%s\"\n", sysfs_dev->bus_id); - printf(" DRIVER==\"%s\"\n", sysfs_dev->driver_name); - - attr_list = sysfs_get_device_attributes(sysfs_dev); - if (attr_list != NULL) - print_all_attributes(attr_list); - else - printf("\n"); - sysfs_dev = sysfs_get_device_parent(sysfs_dev); - if (sysfs_dev == NULL) - break; - } + return 0; +} -exit: - sysfs_close_class_device(class_dev); - return retval; +static void print_record(struct udevice *udev) +{ + struct name_entry *name_loop; + + printf("P: %s\n", udev->dev->devpath); + printf("N: %s\n", udev->name); + list_for_each_entry(name_loop, &udev->symlink_list, node) + printf("S: %s\n", name_loop->name); + list_for_each_entry(name_loop, &udev->env_list, node) + printf("E: %s\n", name_loop->name); } -static void dump_name_devpath(struct udevice *udev) { - printf("%s=%s/%s\n", udev->devpath, udev_root, udev->name); +static void export_name_devpath(struct udevice *udev) { + printf("%s=%s/%s\n", udev->dev->devpath, udev_root, udev->name); } -static void dump_record(struct udevice *udev) { +static void export_record(struct udevice *udev) { print_record(udev); printf("\n"); } -static void dump_db(void fnct(struct udevice *udev)) { +static void export_db(void fnct(struct udevice *udev)) { LIST_HEAD(name_list); struct name_entry *name_loop; udev_db_get_all_entries(&name_list); list_for_each_entry(name_loop, &name_list, node) { - struct udevice udev_db; + struct udevice *udev_db; - udev_init_device(&udev_db, NULL, NULL, NULL); - if (udev_db_get_device(&udev_db, name_loop->name) == 0) - fnct(&udev_db); - udev_cleanup_device(&udev_db); + udev_db = udev_device_init(); + if (udev_db == NULL) + continue; + if (udev_db_get_device(udev_db, name_loop->name) == 0) + fnct(udev_db); + udev_device_cleanup(udev_db); } name_list_cleanup(&name_list); } @@ -204,10 +175,9 @@ static void print_help(void) " -p PATH sysfs device path used for query or chain\n" " -n NAME node/symlink name used for query\n" "\n" - " -r print udev root\n" + " -r prepend to query result or print udev_root\n" " -a print all SYSFS_attributes along the device chain\n" - " -d print the relationship of devpath and the node name for all\n" - " -e print the content of the udev database\n" + " -e export the content of the udev database\n" " -V print udev version\n" " -h print this help text\n" "\n"); @@ -217,7 +187,7 @@ int main(int argc, char *argv[], char *envp[]) { static const char short_options[] = "aden:p:q:rVh"; int option; - struct udevice udev; + struct udevice *udev; int root = 0; enum action_type { @@ -241,12 +211,18 @@ int main(int argc, char *argv[], char *envp[]) char temp[PATH_SIZE]; struct name_entry *name_loop; char *pos; - int retval = 0; + int rc = 0; logging_init("udevinfo"); - udev_init_config(); - udev_init_device(&udev, NULL, NULL, NULL); + udev_config_init(); + sysfs_init(); + + udev = udev_device_init(); + if (udev == NULL) { + rc = 1; + goto exit; + } /* get command line options */ while (1) { @@ -262,7 +238,11 @@ int main(int argc, char *argv[], char *envp[]) break; case 'p': dbg("udev path: %s\n", optarg); - strlcpy(path, optarg, sizeof(path)); + /* remove sysfs mountpoint if not given */ + if (strncmp(optarg, sysfs_path, strlen(sysfs_path)) == 0) + strlcpy(path, &optarg[strlen(sysfs_path)], sizeof(path)); + else + strlcpy(path, optarg, sizeof(path)); break; case 'q': dbg("udev query: %s\n", optarg); @@ -288,7 +268,7 @@ int main(int argc, char *argv[], char *envp[]) break; } fprintf(stderr, "unknown query type\n"); - retval = 2; + rc = 2; goto exit; case 'r': if (action == ACTION_NONE) @@ -299,10 +279,10 @@ int main(int argc, char *argv[], char *envp[]) action = ACTION_ATTRIBUTE_WALK; break; case 'd': - dump_db(dump_name_devpath); + export_db(export_name_devpath); goto exit; case 'e': - dump_db(dump_record); + export_db(export_record); goto exit; case 'V': printf("udevinfo, version %s\n", UDEV_VERSION); @@ -333,10 +313,9 @@ int main(int argc, char *argv[], char *envp[]) pos = path; } } - retval = udev_db_get_device(&udev, pos); - if (retval != 0) { + if (udev_db_get_device(udev, pos) != 0) { fprintf(stderr, "no record for '%s' in database\n", pos); - retval = 3; + rc = 3; goto exit; } } else if (name[0] != '\0') { @@ -350,46 +329,45 @@ int main(int argc, char *argv[], char *envp[]) } else pos = name; - retval = udev_db_lookup_name(pos, devpath, sizeof(devpath)); - if (retval != 0) { + if (udev_db_lookup_name(pos, devpath, sizeof(devpath)) != 0) { fprintf(stderr, "no record for '%s' in database\n", pos); - retval = 3; + rc = 3; goto exit; } - udev_db_get_device(&udev, devpath); + udev_db_get_device(udev, devpath); } else { fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n"); - retval = 4; + rc = 4; goto exit; } switch(query) { case QUERY_NAME: if (root) - printf("%s/%s\n", udev_root, udev.name); + printf("%s/%s\n", udev_root, udev->name); else - printf("%s\n", udev.name); + printf("%s\n", udev->name); break; case QUERY_SYMLINK: - if (list_empty(&udev.symlink_list)) + if (list_empty(&udev->symlink_list)) goto exit; if (root) - list_for_each_entry(name_loop, &udev.symlink_list, node) + list_for_each_entry(name_loop, &udev->symlink_list, node) printf("%s/%s ", udev_root, name_loop->name); else - list_for_each_entry(name_loop, &udev.symlink_list, node) + list_for_each_entry(name_loop, &udev->symlink_list, node) printf("%s ", name_loop->name); printf("\n"); break; case QUERY_PATH: - printf("%s\n", udev.devpath); + printf("%s\n", udev->dev->devpath); goto exit; case QUERY_ENV: - list_for_each_entry(name_loop, &udev.env_list, node) + list_for_each_entry(name_loop, &udev->env_list, node) printf("%s\n", name_loop->name); break; case QUERY_ALL: - print_record(&udev); + print_record(udev); break; default: print_help(); @@ -399,29 +377,23 @@ int main(int argc, char *argv[], char *envp[]) case ACTION_ATTRIBUTE_WALK: if (path[0] == '\0') { fprintf(stderr, "attribute walk on device chain needs path(-p) specified\n"); - retval = 4; + rc = 4; goto exit; - } else { - if (strncmp(path, sysfs_path, strlen(sysfs_path)) != 0) { - /* prepend sysfs mountpoint if not given */ - snprintf(temp, sizeof(temp), "%s%s", sysfs_path, path); - temp[sizeof(temp)-1] = '\0'; - strlcpy(path, temp, sizeof(temp)); - } + } else print_device_chain(path); - } break; case ACTION_ROOT: printf("%s\n", udev_root); break; default: print_help(); - retval = 1; + rc = 1; break; } exit: - udev_cleanup_device(&udev); + udev_device_cleanup(udev); + sysfs_cleanup(); logging_close(); - return retval; + return rc; }