X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevinfo.c;h=d1dd663d8185a28eb668f058e64d63ab71811b50;hp=00af081eacfc1fccde721cb711aef27e3c6011c0;hb=61b1b7069f7a640e1952dce3c6de97034ef7c4fe;hpb=82ca88904d1c9bf17f4434f54e12754c00eddcbd diff --git a/udevinfo.c b/udevinfo.c index 00af081ea..d1dd663d8 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. @@ -28,7 +27,7 @@ #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" @@ -36,41 +35,29 @@ #include "logging.h" -#define SYSFS_VALUE_SIZE 256 - -#ifdef LOG -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_SIZE]; + char value[VALUE_SIZE]; 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) { + dlist_for_each_data(attr_list, attr, struct sysfs_attribute) { if (attr->value != NULL) { - strfieldcpy(value, attr->value); + strlcpy(value, attr->value, sizeof(value)); len = strlen(value); if (len == 0) continue; @@ -88,23 +75,21 @@ static int print_all_attributes(const char *path) len--; } if (len == 0) - printf(" SYSFS{%s}=\"%s\"\n", attr->name, value); + printf(" SYSFS{%s}==\"%s\"\n", attr->name, value); } } printf("\n"); - -exit: - sysfs_close_directory(sysfs_dir); - - return retval; } static int print_record(struct udevice *udev) { + struct name_entry *name_loop; + printf("P: %s\n", udev->devpath); printf("N: %s\n", udev->name); - printf("S: %s\n", udev->symlink); - printf("\n"); + list_for_each_entry(name_loop, &udev->symlink_list, node) + printf("S: %s\n", name_loop->name); + return 0; } @@ -113,7 +98,7 @@ enum query_type { NAME, PATH, SYMLINK, - ALL + ALL, }; static int print_device_chain(const char *path) @@ -123,12 +108,13 @@ static int print_device_chain(const char *path) 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; } @@ -146,11 +132,15 @@ 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); - 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); @@ -164,12 +154,20 @@ static int print_device_chain(const char *path) /* 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(" 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(sysfs_dev->path); + print_all_attributes(attr_list); sysfs_dev_parent = sysfs_get_device_parent(sysfs_dev); if (sysfs_dev_parent == NULL) @@ -183,76 +181,30 @@ exit: return retval; } -/* print all class/main block devices with major/minor, physical device, driver and bus */ -static int print_sysfs_devices(void) -{ - struct dlist *subsyslist; - char *class; - - subsyslist = sysfs_open_subsystem_list("class"); - if (!subsyslist) - return -1; - - dlist_for_each_data(subsyslist, class, char) { - struct sysfs_class *cls; - struct dlist *class_devices; - struct sysfs_class_device *class_dev; - struct sysfs_device *phys_dev; - unsigned int major, minor; - - cls = sysfs_open_class(class); - if (!cls) - continue; - - class_devices = sysfs_get_class_devices(cls); - if (!class_devices) - continue; - - dlist_for_each_data(class_devices, class_dev, struct sysfs_class_device) { - struct sysfs_attribute *attr; - - printf("\n"); - printf("DEVPATH '%s'\n", class_dev->path); - printf("SUBSYSTEM '%s'\n", class_dev->classname); - - attr = sysfs_get_classdev_attr(class_dev, "dev"); - if (attr) { - sscanf(attr->value, "%u:%u", &major, &minor); - printf("MAJOR %u\n", minor); - printf("MINOR %u\n", major); - } - - phys_dev = sysfs_get_classdev_device(class_dev); - if (phys_dev) { - printf("PHYSDEVPATH '%s'\n", phys_dev->path); - if (phys_dev->bus[0] != '\0') - printf("PHYSDEVBUS '%s'\n", phys_dev->bus); - - if (phys_dev->driver_name[0] != '\0') - printf("PHYSDEVDRIVER '%s'\n", phys_dev->driver_name); - } - } - sysfs_close_class(cls); - } - sysfs_close_list(subsyslist); - +static int print_dump(const char *devpath, const char *name) { + printf("%s=%s/%s\n", devpath, udev_root, name); return 0; } -static int process_options(int argc, char *argv[]) +int main(int argc, char *argv[], char *envp[]) { - static const char short_options[] = "an:p:q:rsVh"; + static const char short_options[] = "adn:p:q:rVh"; int option; - int retval = 1; struct udevice udev; int root = 0; int attributes = 0; enum query_type query = NONE; - char result[1024] = ""; - char path[NAME_SIZE] = ""; - char name[NAME_SIZE] = ""; - char temp[NAME_SIZE]; + 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); /* get command line options */ while (1) { @@ -264,12 +216,12 @@ static int process_options(int argc, char *argv[]) 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': @@ -295,27 +247,28 @@ static int process_options(int argc, char *argv[]) break; } - printf("unknown query type\n"); - exit(1); + fprintf(stderr, "unknown query type\n"); + retval = 1; + goto exit; case 'r': root = 1; break; - case 's': - print_sysfs_devices(); - exit(0); - case 'a': attributes = 1; break; + case 'd': + 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; @@ -331,114 +284,99 @@ static int process_options(int argc, char *argv[]) } else { if (path[0] != '/') { /* prepend '/' if missing */ - strfieldcat(temp, "/"); - strfieldcat(temp, path); + strcpy(temp, "/"); + strlcpy(temp, path, sizeof(temp)); pos = temp; } else { pos = path; } } - memset(&udev, 0x00, sizeof(struct udevice)); - strfieldcpy(udev.devpath, pos); - retval = udev_db_get_device(&udev); + 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') { - /* remove udev_root if given */ - int len = strlen(udev_root); + char devpath[PATH_SIZE]; + int len; + /* remove udev_root if given */ + len = strlen(udev_root); if (strncmp(name, udev_root, len) == 0) { pos = &name[len+1]; } else pos = name; - memset(&udev, 0x00, sizeof(struct udevice)); - strfieldcpy(udev.name, pos); - retval = udev_db_get_device_byname(&udev, pos); + 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: - if (root) { - snprintf(result, NAME_SIZE-1, "%s/%s", udev_root, udev.name); - result[NAME_SIZE-1] = '\0'; - } else { - strfieldcpy(result, udev.name); - } - break; - + if (root) + printf("%s/%s\n", udev_root, udev.name); + else + printf("%s\n", udev.name); + goto exit; case SYMLINK: - if (root) { - int slen; - char *spos; - char slink[NAME_SIZE]; - - pos = result; - foreach_strpart(udev.symlink, " \n\r", spos, slen) { - strncpy(slink, spos, slen); - slink[slen] = '\0'; - pos += sprintf(pos, "%s/%s ", udev_root, slink); - } - } else { - strfieldcpy(result, udev.symlink); - } - break; - + 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 PATH: - strfieldcpy(result, udev.devpath); - break; - + printf("%s\n", udev.devpath); + goto exit; case ALL: print_record(&udev); goto exit; - default: - goto exit; + goto help; } - printf("%s\n", result); - -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: udevinfo [-anpqrVh]\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" @@ -450,24 +388,14 @@ help: "\n" " -r print udev root\n" " -a print all SYSFS_attributes along the device chain\n" - " -s print all sysfs devices with major/minor, physical device and bus\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 rc = 0; - - logging_init("udevinfo"); - - /* initialize our configuration */ - udev_init_config(); - - rc = process_options(argc, argv); +exit: + udev_cleanup_device(&udev); logging_close(); - exit(rc); + return retval; }