X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevinfo.c;h=fc45f7565d192e778173b15bc9d293c69ce62dd8;hp=1a10f9ad073c80f2b58c74717edc70702c0c7da0;hb=225cb03bd851adc6d269b13bdf2b1bfded2b96b9;hpb=2362eea6019e07a2e79e67ebe626bfacf40ff40f diff --git a/udevinfo.c b/udevinfo.c index 1a10f9ad0..fc45f7565 100644 --- a/udevinfo.c +++ b/udevinfo.c @@ -1,7 +1,5 @@ /* - * udevinfo.c - fetches stored device information or sysfs attributes - * - * Copyright (C) 2004-2005 Kay Sievers + * Copyright (C) 2004-2006 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 @@ -14,7 +12,7 @@ * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * */ @@ -27,25 +25,13 @@ #include #include #include +#include +#include +#include #include "udev.h" - -#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(priority, format, args); - va_end(args); -} -#endif - -static void print_all_attributes(const char *devpath) +static void print_all_attributes(const char *devpath, const char *key) { char path[PATH_SIZE]; DIR *dir; @@ -57,14 +43,32 @@ static void print_all_attributes(const char *devpath) dir = opendir(path); if (dir != NULL) { for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { + struct stat statbuf; + char filename[PATH_SIZE]; char *attr_value; char value[NAME_SIZE]; size_t len; + if (dent->d_name[0] == '.') + continue; + + if (strcmp(dent->d_name, "uevent") == 0) + continue; + + strlcpy(filename, path, sizeof(filename)); + strlcat(filename, "/", sizeof(filename)); + strlcat(filename, dent->d_name, sizeof(filename)); + if (lstat(filename, &statbuf) != 0) + continue; + if (S_ISLNK(statbuf.st_mode)) + continue; + attr_value = sysfs_attr_get_value(devpath, dent->d_name); if (attr_value == NULL) continue; len = strlcpy(value, attr_value, sizeof(value)); + if(len >= sizeof(value)) + len = sizeof(value) - 1; dbg("attr '%s'='%s'(%zi)", dent->d_name, value, len); /* remove trailing newlines */ @@ -79,8 +83,8 @@ static void print_all_attributes(const char *devpath) continue; } - replace_untrusted_chars(value); - printf(" SYSFS{%s}==\"%s\"\n", dent->d_name, value); + replace_chars(value, ALLOWED_CHARS_INPUT); + printf(" %s{%s}==\"%s\"\n", key, dent->d_name, value); } } printf("\n"); @@ -90,6 +94,10 @@ static int print_device_chain(const char *devpath) { struct sysfs_device *dev; + dev = sysfs_device_get(devpath); + if (dev == NULL) + return -1; + 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" @@ -98,15 +106,11 @@ static int print_device_chain(const char *devpath) "and the attributes from one single parent device.\n" "\n"); - dev = sysfs_device_get(devpath); - if (dev == NULL) - return -1; - printf(" looking at device '%s':\n", dev->devpath); - printf(" KERNEL==\"%s\"\n", dev->kernel_name); + printf(" KERNEL==\"%s\"\n", dev->kernel); printf(" SUBSYSTEM==\"%s\"\n", dev->subsystem); printf(" DRIVER==\"%s\"\n", dev->driver); - print_all_attributes(dev->devpath); + print_all_attributes(dev->devpath, "ATTR"); /* walk up the chain of devices */ while (1) { @@ -114,11 +118,11 @@ static int print_device_chain(const char *devpath) 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); + printf(" KERNELS==\"%s\"\n", dev->kernel); + printf(" SUBSYSTEMS==\"%s\"\n", dev->subsystem); + printf(" DRIVERS==\"%s\"\n", dev->driver); - print_all_attributes(dev->devpath); + print_all_attributes(dev->devpath, "ATTRS"); } return 0; @@ -132,20 +136,17 @@ static void print_record(struct udevice *udev) printf("N: %s\n", udev->name); list_for_each_entry(name_loop, &udev->symlink_list, node) printf("S: %s\n", name_loop->name); + if (udev->link_priority != 0) + printf("L: %i\n", udev->link_priority); + if (udev->partitions != 0) + printf("A:%u\n", udev->partitions); + if (udev->ignore_remove) + printf("R:%u\n", udev->ignore_remove); list_for_each_entry(name_loop, &udev->env_list, node) printf("E: %s\n", name_loop->name); } -static void export_name_devpath(struct udevice *udev) { - printf("%s=%s/%s\n", udev->dev->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)) { +static void export_db(void) { LIST_HEAD(name_list); struct name_entry *name_loop; @@ -153,44 +154,76 @@ static void export_db(void fnct(struct udevice *udev)) { list_for_each_entry(name_loop, &name_list, node) { struct udevice *udev_db; - udev_db = udev_device_init(); + udev_db = udev_device_init(NULL); if (udev_db == NULL) continue; if (udev_db_get_device(udev_db, name_loop->name) == 0) - fnct(udev_db); + print_record(udev_db); + printf("\n"); udev_device_cleanup(udev_db); } name_list_cleanup(&name_list); } -static void print_help(void) +static int lookup_device_by_name(struct udevice *udev, const char *name) { - 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"); + LIST_HEAD(name_list); + int count; + struct name_entry *device; + int rc = -1; + + count = udev_db_get_devices_by_name(name, &name_list); + if (count <= 0) + goto out; + + info("found %i devices for '%s'", count, name); + + /* select the device that seems to match */ + list_for_each_entry(device, &name_list, node) { + char filename[PATH_SIZE]; + struct stat statbuf; + + udev_device_init(udev); + if (udev_db_get_device(udev, device->name) != 0) + continue; + info("found db entry '%s'", device->name); + + /* make sure, we don't get a link of a differnt device */ + strlcpy(filename, udev_root, sizeof(filename)); + strlcat(filename, "/", sizeof(filename)); + strlcat(filename, name, sizeof(filename)); + if (stat(filename, &statbuf) != 0) + continue; + if (major(udev->devt) > 0 && udev->devt != statbuf.st_rdev) { + info("skip '%s', dev_t doesn't match", udev->name); + continue; + } + rc = 0; + break; + } +out: + name_list_cleanup(&name_list); + return rc; } -int main(int argc, char *argv[], char *envp[]) +int udevinfo(int argc, char *argv[], char *envp[]) { - static const char short_options[] = "aden:p:q:rVh"; int option; struct udevice *udev; int root = 0; + static const struct option options[] = { + { "name", 1, NULL, 'n' }, + { "path", 1, NULL, 'p' }, + { "query", 1, NULL, 'q' }, + { "attribute-walk", 0, NULL, 'a' }, + { "export-db", 0, NULL, 'e' }, + { "root", 0, NULL, 'r' }, + { "version", 0, NULL, 1 }, /* -V outputs braindead format */ + { "help", 0, NULL, 'h' }, + {} + }; + enum action_type { ACTION_NONE, ACTION_QUERY, @@ -213,19 +246,17 @@ int main(int argc, char *argv[], char *envp[]) int rc = 0; logging_init("udevinfo"); - udev_config_init(); sysfs_init(); - udev = udev_device_init(); + udev = udev_device_init(NULL); if (udev == NULL) { rc = 1; goto exit; } - /* get command line options */ while (1) { - option = getopt(argc, argv, short_options); + option = getopt_long(argc, argv, "aen:p:q:rVh", options, NULL); if (option == -1) break; @@ -237,7 +268,7 @@ int main(int argc, char *argv[], char *envp[]) strlcpy(name, &optarg[strlen(udev_root)+1], sizeof(name)); else strlcpy(name, optarg, sizeof(name)); - dbg("name: %s\n", name); + dbg("name: %s", name); break; case 'p': /* remove /sys if given */ @@ -245,10 +276,9 @@ int main(int argc, char *argv[], char *envp[]) strlcpy(path, &optarg[strlen(sysfs_path)], sizeof(path)); else strlcpy(path, optarg, sizeof(path)); - dbg("path: %s\n", path); + dbg("path: %s", path); break; case 'q': - dbg("udev query: %s\n", optarg); action = ACTION_QUERY; if (strcmp(optarg, "name") == 0) { query = QUERY_NAME; @@ -281,19 +311,34 @@ int main(int argc, char *argv[], char *envp[]) case 'a': action = ACTION_ATTRIBUTE_WALK; break; - case 'd': - export_db(export_name_devpath); - goto exit; case 'e': - export_db(export_record); + export_db(); + goto exit; + case 1: + printf("%s\n", UDEV_VERSION); goto exit; case 'V': printf("udevinfo, version %s\n", UDEV_VERSION); goto exit; case 'h': - case '?': + printf("Usage: udevadm info OPTIONS\n" + " --query= 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" + " --path= sysfs device path used for query or chain\n" + " --name= node or symlink name used for query\n" + "\n" + " --root prepend to query result or print udev_root\n" + " --attribute-walk print all SYSFS_attributes along the device chain\n" + " --export-db export the content of the udev database\n" + " --help print this text\n" + "\n"); + goto exit; default: - print_help(); goto exit; } } @@ -309,16 +354,13 @@ int main(int argc, char *argv[], char *envp[]) goto exit; } } else if (name[0] != '\0') { - char devpath[PATH_SIZE]; - - if (udev_db_lookup_name(name, devpath, sizeof(devpath)) != 0) { + if (lookup_device_by_name(udev, name) != 0) { fprintf(stderr, "node name not found\n"); rc = 4; goto exit; } - udev_db_get_device(udev, devpath); } else { - fprintf(stderr, "query needs device path(-p) or node name(-n) specified\n"); + fprintf(stderr, "query needs --path or node --name specified\n"); rc = 4; goto exit; } @@ -331,15 +373,14 @@ int main(int argc, char *argv[], char *envp[]) printf("%s\n", udev->name); break; case QUERY_SYMLINK: - if (list_empty(&udev->symlink_list)) - goto exit; - 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"); + list_for_each_entry(name_loop, &udev->symlink_list, node) { + char c = name_loop->node.next != &udev->symlink_list ? ' ' : '\n'; + + if (root) + printf("%s/%s%c", udev_root, name_loop->name, c); + else + printf("%s%c", name_loop->name, c); + } break; case QUERY_PATH: printf("%s\n", udev->dev->devpath); @@ -352,24 +393,30 @@ int main(int argc, char *argv[], char *envp[]) print_record(udev); break; default: - print_help(); + fprintf(stderr, "unknown query type\n"); break; } break; case ACTION_ATTRIBUTE_WALK: if (path[0] != '\0') { - print_device_chain(path); + if (print_device_chain(path) != 0) { + fprintf(stderr, "no valid sysfs device found\n"); + rc = 4; + goto exit; + } } else if (name[0] != '\0') { - char devpath[PATH_SIZE]; - - if (udev_db_lookup_name(name, devpath, sizeof(devpath)) != 0) { + if (lookup_device_by_name(udev, name) != 0) { fprintf(stderr, "node name not found\n"); rc = 4; goto exit; } - print_device_chain(devpath); + if (print_device_chain(udev->dev->devpath) != 0) { + fprintf(stderr, "no valid sysfs device found\n"); + rc = 4; + goto exit; + } } else { - fprintf(stderr, "attribute walk needs device path(-p) or node name(-n) specified\n"); + fprintf(stderr, "attribute walk needs --path or node --name specified\n"); rc = 5; goto exit; } @@ -378,7 +425,7 @@ int main(int argc, char *argv[], char *envp[]) printf("%s\n", udev_root); break; default: - print_help(); + fprintf(stderr, "missing option\n"); rc = 1; break; }