X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevinfo.c;h=db562eee49d6c581c8bb1e775f56da76484684f5;hp=3361837a37a98200abde68964df9312079fff6b0;hb=b8476286d62c82a1a0bd8de318aa3f7d835222a0;hpb=d00bd1724bd9f75f5a7b8e0368428c2f0d6d3c26 diff --git a/udevinfo.c b/udevinfo.c index 3361837a3..db562eee4 100644 --- a/udevinfo.c +++ b/udevinfo.c @@ -3,7 +3,6 @@ * * Copyright (C) 2004 Kay Sievers * - * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation version 2 of the License. @@ -28,196 +27,179 @@ #include #include "libsysfs/sysfs/libsysfs.h" -#include "libsysfs/dlist.h" +#include "udev_libc_wrapper.h" #include "udev.h" +#include "udev_utils.h" #include "udev_version.h" +#include "udev_db.h" #include "logging.h" -#include "udevdb.h" - -# define SYSFS_VALUE_MAX 200 -char **main_argv; -int main_argc; - -#ifdef LOG -unsigned char logname[LOGNAME_SIZE]; -void log_message (int level, const char *format, ...) +#ifdef USE_LOG +void log_message (int priority, const char *format, ...) { va_list args; + if (priority > udev_log_priority) + return; + va_start(args, format); - vsyslog(level, format, args); + vsyslog(priority, format, args); va_end(args); } #endif -static int print_all_attributes(const char *path) +static void print_all_attributes(struct dlist *attr_list) { - struct dlist *attributes; struct sysfs_attribute *attr; - struct sysfs_directory *sysfs_dir; - char value[SYSFS_VALUE_MAX]; - int len; - int retval = 0; - - sysfs_dir = sysfs_open_directory(path); - if (sysfs_dir == NULL) - return -1; - - attributes = sysfs_get_dir_attributes(sysfs_dir); - if (attributes == NULL) { - retval = -1; - goto exit; - } - - dlist_for_each_data(attributes, attr, struct sysfs_attribute) { - if (attr->value != NULL) { - strfieldcpy(value, attr->value); - len = strlen(value); - if (len == 0) - continue; - - /* remove trailing newline */ - if (value[len-1] == '\n') { - value[len-1] = '\0'; - len--; - } + 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; + } - /* 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"); - -exit: - sysfs_close_directory(sysfs_dir); - - return retval; } -/* callback for database dump */ -static int print_record(char *path, struct udevice *dev) +static int print_record(struct udevice *udev) { - printf("P: %s\n", path); - printf("N: %s\n", dev->name); - printf("M: %#o\n", dev->mode); - printf("S: %s\n", dev->symlink); - printf("O: %s\n", dev->owner); - printf("G: %s\n", dev->group); - printf("\n"); + 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); + return 0; } -enum query_type { - NONE, - NAME, - PATH, - SYMLINK, - MODE, - OWNER, - GROUP, - 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; /* get the class dev */ class_dev = sysfs_open_class_device_path(path); if (class_dev == NULL) { - printf("couldn't get the class device\n"); + fprintf(stderr, "couldn't get the class device\n"); return -1; } - /* read the 'dev' file for major/minor*/ - attr = sysfs_get_classdev_attr(class_dev, "dev"); - if (attr == NULL) { - printf("couldn't get the \"dev\" file\n"); - retval = -1; - goto exit; - } - 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" + "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 in a rule to match the\n" - "device for which the node will be created.\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"); - printf("device '%s' has major:minor %s", class_dev->path, attr->value); - sysfs_close_attribute(attr); + + /* 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); /* open sysfs class device directory and print all attributes */ printf(" looking at class device '%s':\n", class_dev->path); - if (print_all_attributes(class_dev->path) != 0) { - printf("couldn't open class device directory\n"); + printf(" SUBSYSTEM==\"%s\"\n", class_dev->classname); + + 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(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_close_class_device(class_dev); - class_dev = class_dev_parent; - } - sysfs_dev = sysfs_get_classdev_device(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 class device's \"device\"\n"); + 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); - - /* open sysfs device directory and print all attributes */ - print_all_attributes(sysfs_dev->path); - - sysfs_dev_parent = sysfs_get_device_parent(sysfs_dev); - if (sysfs_dev_parent == NULL) + 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; - - //sysfs_close_device(sysfs_dev); - sysfs_dev = sysfs_dev_parent; } - sysfs_close_device(sysfs_dev); exit: - //sysfs_close_class_device(class_dev); + sysfs_close_class_device(class_dev); return retval; } -static int process_options(void) +static int print_dump(const char *devpath, const char *name) { + printf("%s=%s/%s\n", devpath, udev_root, name); + return 0; +} + +int main(int argc, char *argv[], char *envp[]) { static const char short_options[] = "adn:p:q:rVh"; int option; - int retval = 1; - struct udevice dev; + struct udevice udev; int root = 0; int attributes = 0; - enum query_type query = NONE; - char result[NAME_SIZE] = ""; - char path[NAME_SIZE] = ""; - char name[NAME_SIZE] = ""; - char temp[NAME_SIZE]; + 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]; + struct name_entry *name_loop; char *pos; + int retval = 0; + + logging_init("udevinfo"); + + udev_init_config(); + udev_init_device(&udev, NULL, NULL, NULL); /* get command line options */ while (1) { - option = getopt(main_argc, main_argv, short_options); + option = getopt(argc, argv, short_options); if (option == -1) break; @@ -225,54 +207,45 @@ static int process_options(void) switch (option) { case 'n': dbg("udev name: %s\n", optarg); - strfieldcpy(name, optarg); + strlcpy(name, optarg, sizeof(name)); break; case 'p': dbg("udev path: %s\n", optarg); - strfieldcpy(path, optarg); + strlcpy(path, optarg, sizeof(path)); break; case 'q': dbg("udev query: %s\n", optarg); if (strcmp(optarg, "name") == 0) { - query = NAME; + query = QUERY_NAME; break; } if (strcmp(optarg, "symlink") == 0) { - query = SYMLINK; - break; - } - - if (strcmp(optarg, "mode") == 0) { - query = MODE; - break; - } - - if (strcmp(optarg, "owner") == 0) { - query = OWNER; + query = QUERY_SYMLINK; break; } - if (strcmp(optarg, "group") == 0) { - query = GROUP; + if (strcmp(optarg, "path") == 0) { + query = QUERY_PATH; break; } - if (strcmp(optarg, "path") == 0) { - query = PATH; + if (strcmp(optarg, "env") == 0) { + query = QUERY_ENV; break; } if (strcmp(optarg, "all") == 0) { - query = ALL; + query = QUERY_ALL; break; } - printf("unknown query type\n"); - exit(1); + fprintf(stderr, "unknown query type\n"); + retval = 1; + goto exit; case 'r': root = 1; @@ -283,21 +256,15 @@ static int process_options(void) break; case 'd': - retval = udevdb_open_ro(); - if (retval != 0) { - printf("unable to open udev database\n"); - exit(2); - } - udevdb_call_foreach(print_record); - udevdb_exit(); - exit(0); + udev_db_dump_names(print_dump); + goto exit; case 'V': printf("udevinfo, version %s\n", UDEV_VERSION); - exit(0); + goto exit; case 'h': - retval = 0; + retval = 2; case '?': default: goto help; @@ -305,13 +272,7 @@ static int process_options(void) } /* process options */ - if (query != NONE) { - retval = udevdb_open_ro(); - if (retval != 0) { - printf("unable to open udev database\n"); - return -EACCES; - } - + if (query != QUERY_NONE) { if (path[0] != '\0') { /* remove sysfs_path if given */ if (strncmp(path, sysfs_path, strlen(sysfs_path)) == 0) { @@ -319,110 +280,108 @@ static int process_options(void) } else { if (path[0] != '/') { /* prepend '/' if missing */ - strfieldcat(temp, "/"); - strfieldcat(temp, path); + strcpy(temp, "/"); + strlcpy(temp, path, sizeof(temp)); pos = temp; } else { pos = path; } } - retval = udevdb_get_dev(pos, &dev); + retval = udev_db_get_device(&udev, pos); if (retval != 0) { - printf("device not found in database\n"); + fprintf(stderr, "device not found in database\n"); goto exit; } goto print; } if (name[0] != '\0') { + char devpath[PATH_SIZE]; + int len; + /* remove udev_root if given */ - if (strncmp(name, udev_root, strlen(udev_root)) == 0) { - pos = name + strlen(udev_root); + len = strlen(udev_root); + if (strncmp(name, udev_root, len) == 0) { + pos = &name[len+1]; } else pos = name; - retval = udevdb_get_dev_byname(pos, path, &dev); + + retval = udev_db_search_name(devpath, sizeof(devpath), pos); if (retval != 0) { - printf("device not found in database\n"); + fprintf(stderr, "device not found in database\n"); goto exit; } + udev_db_get_device(&udev, devpath); goto print; } - printf("query needs device path(-p) or node name(-n) specified\n"); + fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n"); + retval = 3; goto exit; print: switch(query) { - case NAME: + case QUERY_NAME: if (root) - strfieldcpy(result, udev_root); - strfieldcat(result, dev.name); - break; - - case SYMLINK: - strfieldcpy(result, dev.symlink); - break; - - case MODE: - sprintf(result, "%#o", dev.mode); - break; - - case GROUP: - strfieldcpy(result, dev.group); - break; - - case OWNER: - strfieldcpy(result, dev.owner); - break; - - case PATH: - strfieldcpy(result, path); - break; - - case ALL: - print_record(path, &dev); + printf("%s/%s\n", udev_root, udev.name); + else + printf("%s\n", udev.name); goto exit; - - default: + case QUERY_SYMLINK: + if (list_empty(&udev.symlink_list)) + break; + if (root) + 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) + printf("%s ", name_loop->name); + printf("\n"); + goto exit; + case QUERY_PATH: + printf("%s\n", udev.devpath); + goto exit; + 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: + goto help; } - printf("%s\n", result); - -exit: - udevdb_exit(); - return retval; } if (attributes) { if (path[0] == '\0') { - printf("attribute walk on device chain needs path(-p) specified\n"); - return -EINVAL; + fprintf(stderr, "attribute walk on device chain needs path(-p) specified\n"); + retval = 4; + goto exit; } else { if (strncmp(path, sysfs_path, strlen(sysfs_path)) != 0) { /* prepend sysfs mountpoint if not given */ - strfieldcpy(temp, path); - strfieldcpy(path, sysfs_path); - strfieldcat(path, temp); + snprintf(temp, sizeof(temp), "%s%s", sysfs_path, path); + temp[sizeof(temp)-1] = '\0'; + strlcpy(path, temp, sizeof(temp)); } print_device_chain(path); - return 0; + goto exit; } } if (root) { printf("%s\n", udev_root); - return 0; + goto exit; } help: - printf("Usage: [-anpqrdVh]\n" + fprintf(stderr, "Usage: udevinfo [-anpqrVh]\n" " -q TYPE query database for the specified value:\n" " 'name' name of device node\n" " 'symlink' pointing to node\n" - " 'mode' permissions of node\n" - " 'owner' of node\n" - " 'group' of 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" @@ -430,27 +389,14 @@ help: "\n" " -r print udev root\n" " -a print all SYSFS_attributes along the device chain\n" - " -d dump whole database\n" + " -d print the relationship of devpath and the node name for all\n" + " devices available in the database\n" " -V print udev version\n" " -h print this help text\n" "\n"); - return retval; -} - -int main(int argc, char *argv[], char *envp[]) -{ - int retval; - main_argv = argv; - main_argc = argc; - - init_logging("udevinfo"); - - /* initialize our configuration */ - udev_init_config(); - - retval = process_options(); - if (retval != 0) - exit(1); - exit(0); +exit: + udev_cleanup_device(&udev); + logging_close(); + return retval; }