X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevinfo.c;h=8ff09da3d1504d7e212ea09a6a7954e72f844de0;hp=fadfaec945b95d70dfb4462855bdd5f882373e10;hb=caa4fd85aeff9c40897d34fba09b4fb7c18d2198;hpb=fb17920701dcba0d94e3fde566788a868e41d1ad diff --git a/udevinfo.c b/udevinfo.c index fadfaec94..8ff09da3d 100644 --- a/udevinfo.c +++ b/udevinfo.c @@ -1,7 +1,7 @@ /* - * udevinfo.c - fetches attributes for a device + * udevinfo.c - fetches stored device information or sysfs attributes * - * Copyright (C) 2004 Kay Sievers + * Copyright (C) 2004-2005 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 @@ -31,7 +31,6 @@ #include "udev.h" #include "udev_utils.h" #include "udev_version.h" -#include "udev_db.h" #include "logging.h" @@ -80,7 +79,7 @@ static void print_all_attributes(struct dlist *attr_list) printf("\n"); } -static int print_record(struct udevice *udev) +static void print_record(struct udevice *udev) { struct name_entry *name_loop; @@ -90,8 +89,6 @@ static int print_record(struct udevice *udev) printf("S: %s\n", name_loop->name); list_for_each_entry(name_loop, &udev->env_list, node) printf("E: %s\n", name_loop->name); - - return 0; } static int print_device_chain(const char *path) @@ -124,6 +121,7 @@ static int print_device_chain(const char *path) /* 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); attr_list = sysfs_get_classdev_attributes(class_dev); @@ -167,7 +165,16 @@ exit: return retval; } -static void dump_names(void) { +static void export_name_devpath(struct udevice *udev) { + printf("%s=%s/%s\n", udev->devpath, udev_root, udev->name); +} + +static void export_record(struct udevice *udev) { + print_record(udev); + printf("\n"); +} + +static void export_db(void fnct(struct udevice *udev)) { LIST_HEAD(name_list); struct name_entry *name_loop; @@ -177,19 +184,47 @@ static void dump_names(void) { 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); + fnct(&udev_db); udev_cleanup_device(&udev_db); } name_list_cleanup(&name_list); } +static void print_help(void) +{ + 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" + " '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" + " -n NAME node/symlink name used for query\n" + "\n" + " -r prepend to query result or print udev_root\n" + " -a print all SYSFS_attributes along the device chain\n" + " -e export the content of the udev database\n" + " -V print udev version\n" + " -h print this help text\n" + "\n"); +} + int main(int argc, char *argv[], char *envp[]) { - static const char short_options[] = "adn:p:q:rVh"; + static const char short_options[] = "aden:p:q:rVh"; int option; struct udevice udev; int root = 0; - int attributes = 0; + + enum action_type { + ACTION_NONE, + ACTION_QUERY, + ACTION_ATTRIBUTE_WALK, + ACTION_ROOT, + } action = ACTION_NONE; + enum query_type { QUERY_NONE, QUERY_NAME, @@ -198,6 +233,7 @@ int main(int argc, char *argv[], char *envp[]) QUERY_ENV, QUERY_ALL, } query = QUERY_NONE; + char path[PATH_SIZE] = ""; char name[PATH_SIZE] = ""; char temp[PATH_SIZE]; @@ -222,70 +258,65 @@ int main(int argc, char *argv[], char *envp[]) dbg("udev name: %s\n", optarg); strlcpy(name, optarg, sizeof(name)); break; - case 'p': dbg("udev path: %s\n", optarg); strlcpy(path, optarg, sizeof(path)); break; - case 'q': dbg("udev query: %s\n", optarg); - + action = ACTION_QUERY; if (strcmp(optarg, "name") == 0) { query = QUERY_NAME; break; } - if (strcmp(optarg, "symlink") == 0) { query = QUERY_SYMLINK; break; } - if (strcmp(optarg, "path") == 0) { query = QUERY_PATH; break; } - if (strcmp(optarg, "env") == 0) { query = QUERY_ENV; break; } - if (strcmp(optarg, "all") == 0) { query = QUERY_ALL; break; } - fprintf(stderr, "unknown query type\n"); - retval = 1; + retval = 2; goto exit; - case 'r': + if (action == ACTION_NONE) + action = ACTION_ROOT; root = 1; break; - case 'a': - attributes = 1; + action = ACTION_ATTRIBUTE_WALK; break; - case 'd': - dump_names(); + export_db(export_name_devpath); + goto exit; + case 'e': + export_db(export_record); goto exit; - case 'V': printf("udevinfo, version %s\n", UDEV_VERSION); goto exit; - case 'h': - retval = 2; case '?': default: - goto help; + print_help(); + goto exit; } } - /* process options */ - if (query != QUERY_NONE) { + /* run action */ + switch (action) { + case ACTION_QUERY: + /* need devpath or node/symlink name for query */ if (path[0] != '\0') { /* remove sysfs_path if given */ if (strncmp(path, sysfs_path, strlen(sysfs_path)) == 0) { @@ -303,12 +334,10 @@ int main(int argc, char *argv[], char *envp[]) retval = udev_db_get_device(&udev, pos); if (retval != 0) { fprintf(stderr, "no record for '%s' in database\n", pos); + retval = 3; goto exit; } - goto print; - } - - if (name[0] != '\0') { + } else if (name[0] != '\0') { char devpath[PATH_SIZE]; int len; @@ -319,27 +348,26 @@ int main(int argc, char *argv[], char *envp[]) } else pos = name; - retval = udev_db_search_name(pos, devpath, sizeof(devpath)); + retval = udev_db_lookup_name(pos, devpath, sizeof(devpath)); if (retval != 0) { fprintf(stderr, "no record for '%s' in database\n", pos); + retval = 3; goto exit; } udev_db_get_device(&udev, devpath); - goto print; + } else { + fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n"); + retval = 4; + goto exit; } - fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n"); - retval = 3; - goto exit; - -print: switch(query) { case QUERY_NAME: if (root) printf("%s/%s\n", udev_root, udev.name); else printf("%s\n", udev.name); - goto exit; + break; case QUERY_SYMLINK: if (list_empty(&udev.symlink_list)) goto exit; @@ -350,23 +378,23 @@ print: list_for_each_entry(name_loop, &udev.symlink_list, node) printf("%s ", name_loop->name); printf("\n"); - goto exit; + break; 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; + break; case QUERY_ALL: print_record(&udev); - goto exit; + break; default: - goto help; + print_help(); + break; } - } - - if (attributes) { + break; + case ACTION_ATTRIBUTE_WALK: if (path[0] == '\0') { fprintf(stderr, "attribute walk on device chain needs path(-p) specified\n"); retval = 4; @@ -379,35 +407,17 @@ print: strlcpy(path, temp, sizeof(temp)); } print_device_chain(path); - goto exit; } - } - - if (root) { + break; + case ACTION_ROOT: printf("%s\n", udev_root); - goto exit; + break; + default: + print_help(); + retval = 1; + break; } -help: - 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" - " '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" - " -n NAME node/symlink name used for query\n" - "\n" - " -r 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" - " devices available in the database\n" - " -V print udev version\n" - " -h print this help text\n" - "\n"); - exit: udev_cleanup_device(&udev); logging_close();