X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevinfo.c;h=814bd1e90af94a83fca8be047dc863ecd7764fbb;hp=d1dd663d8185a28eb668f058e64d63ab71811b50;hb=db481105c2cf2092e1499736d6619bf194f91711;hpb=61b1b7069f7a640e1952dce3c6de97034ef7c4fe diff --git a/udevinfo.c b/udevinfo.c index d1dd663d8..814bd1e90 100644 --- a/udevinfo.c +++ b/udevinfo.c @@ -1,5 +1,5 @@ /* - * udevinfo - fetches attributes for a device + * udevinfo.c - fetches attributes for a device * * Copyright (C) 2004 Kay Sievers * @@ -53,30 +53,29 @@ static void print_all_attributes(struct dlist *attr_list) { struct sysfs_attribute *attr; char value[VALUE_SIZE]; - int len; + size_t len; dlist_for_each_data(attr_list, attr, struct sysfs_attribute) { - if (attr->value != NULL) { - strlcpy(value, attr->value, sizeof(value)); - len = strlen(value); - if (len == 0) - continue; - - /* remove trailing newline */ - if (value[len-1] == '\n') { - value[len-1] = '\0'; - len--; - } + 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; + } - /* skip nonprintable values */ - while (len) { - if (isprint(value[len-1]) == 0) - break; - len--; - } - if (len == 0) - printf(" SYSFS{%s}==\"%s\"\n", attr->name, value); + /* 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", attr->name, value); } printf("\n"); } @@ -93,21 +92,12 @@ static int print_record(struct udevice *udev) return 0; } -enum query_type { - NONE, - NAME, - PATH, - SYMLINK, - ALL, -}; - 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 sysfs_device *sysfs_dev_parent; struct dlist *attr_list; int retval = 0; @@ -144,36 +134,30 @@ static int print_device_chain(const char *path) /* get the device link (if parent exists look here) */ class_dev_parent = sysfs_get_classdev_parent(class_dev); - if (class_dev_parent != NULL) + 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 class device's \"device\"\n"); + printf("follow the \"device\"-link to the physical device:\n"); /* look the device chain upwards */ while (sysfs_dev != NULL) { - attr_list = sysfs_get_device_attributes(sysfs_dev); - if (attr_list == NULL) { - fprintf(stderr, "couldn't open device directory\n"); - retval = -1; - goto exit; - } - 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); - /* open sysfs device directory and print all attributes */ - print_all_attributes(attr_list); + attr_list = sysfs_get_device_attributes(sysfs_dev); + if (attr_list != NULL) + print_all_attributes(attr_list); + else + printf("\n"); - sysfs_dev_parent = sysfs_get_device_parent(sysfs_dev); - if (sysfs_dev_parent == NULL) + sysfs_dev = sysfs_get_device_parent(sysfs_dev); + if (sysfs_dev == NULL) break; - - sysfs_dev = sysfs_dev_parent; } exit: @@ -181,9 +165,22 @@ exit: return retval; } -static int print_dump(const char *devpath, const char *name) { - printf("%s=%s/%s\n", devpath, udev_root, name); - return 0; +static void dump_names(void) { + LIST_HEAD(name_list); + struct name_entry *name_loop; + struct name_entry *tmp_loop; + + udev_db_get_all_entries(&name_list); + list_for_each_entry_safe(name_loop, tmp_loop, &name_list, node) { + struct udevice udev_db; + + udev_init_device(&udev_db, NULL, NULL, NULL); + if (udev_db_get_device(&udev_db, name_loop->name) == 0) { + printf("%s=%s/%s\n", udev_db.devpath, udev_root, udev_db.name); + free(name_loop); + } + udev_cleanup_device(&udev_db); + } } int main(int argc, char *argv[], char *envp[]) @@ -193,7 +190,14 @@ int main(int argc, char *argv[], char *envp[]) struct udevice udev; int root = 0; int attributes = 0; - enum query_type query = NONE; + enum query_type { + QUERY_NONE, + QUERY_NAME, + QUERY_PATH, + QUERY_SYMLINK, + QUERY_ENV, + QUERY_ALL, + } query = QUERY_NONE; char path[PATH_SIZE] = ""; char name[PATH_SIZE] = ""; char temp[PATH_SIZE]; @@ -204,7 +208,7 @@ int main(int argc, char *argv[], char *envp[]) logging_init("udevinfo"); udev_init_config(); - udev_init_device(&udev, NULL, NULL); + udev_init_device(&udev, NULL, NULL, NULL); /* get command line options */ while (1) { @@ -228,22 +232,27 @@ int main(int argc, char *argv[], char *envp[]) dbg("udev query: %s\n", optarg); if (strcmp(optarg, "name") == 0) { - query = NAME; + query = QUERY_NAME; break; } if (strcmp(optarg, "symlink") == 0) { - query = SYMLINK; + query = QUERY_SYMLINK; break; } if (strcmp(optarg, "path") == 0) { - query = PATH; + query = QUERY_PATH; + break; + } + + if (strcmp(optarg, "env") == 0) { + query = QUERY_ENV; break; } if (strcmp(optarg, "all") == 0) { - query = ALL; + query = QUERY_ALL; break; } @@ -260,7 +269,7 @@ int main(int argc, char *argv[], char *envp[]) break; case 'd': - udev_db_dump_names(print_dump); + dump_names(); goto exit; case 'V': @@ -276,7 +285,7 @@ int main(int argc, char *argv[], char *envp[]) } /* process options */ - if (query != NONE) { + if (query != QUERY_NONE) { if (path[0] != '\0') { /* remove sysfs_path if given */ if (strncmp(path, sysfs_path, strlen(sysfs_path)) == 0) { @@ -293,7 +302,7 @@ int main(int argc, char *argv[], char *envp[]) } retval = udev_db_get_device(&udev, pos); if (retval != 0) { - fprintf(stderr, "device not found in database\n"); + fprintf(stderr, "no record for '%s' in database\n", pos); goto exit; } goto print; @@ -325,15 +334,15 @@ int main(int argc, char *argv[], char *envp[]) print: switch(query) { - case NAME: + case QUERY_NAME: if (root) printf("%s/%s\n", udev_root, udev.name); else printf("%s\n", udev.name); goto exit; - case SYMLINK: + case QUERY_SYMLINK: if (list_empty(&udev.symlink_list)) - break; + goto exit; if (root) list_for_each_entry(name_loop, &udev.symlink_list, node) printf("%s/%s ", udev_root, name_loop->name); @@ -342,10 +351,14 @@ print: printf("%s ", name_loop->name); printf("\n"); goto exit; - case PATH: + case QUERY_PATH: printf("%s\n", udev.devpath); goto exit; - case ALL: + case QUERY_ENV: + list_for_each_entry(name_loop, &udev.env_list, node) + printf("%s\n", name_loop->name); + goto exit; + case QUERY_ALL: print_record(&udev); goto exit; default: @@ -381,6 +394,7 @@ help: " 'name' name of device node\n" " 'symlink' pointing to node\n" " 'path' sysfs device path\n" + " 'env' the device related imported environment\n" " 'all' all values\n" "\n" " -p PATH sysfs device path used for query or chain\n"