diff options
author | mananth <mananth> | 2003-08-25 08:12:27 +0000 |
---|---|---|
committer | mananth <mananth> | 2003-08-25 08:12:27 +0000 |
commit | 84e213ec1680275dc69477c34f34a372b9fddf2d (patch) | |
tree | e5c717a88b8b980780cd15dc86056b442f13fcaf /cmd/systool.c | |
download | sysfsutils-84e213ec1680275dc69477c34f34a372b9fddf2d.tar.gz |
Initial revision
Diffstat (limited to 'cmd/systool.c')
-rw-r--r-- | cmd/systool.c | 706 |
1 files changed, 706 insertions, 0 deletions
diff --git a/cmd/systool.c b/cmd/systool.c new file mode 100644 index 0000000..60c8d67 --- /dev/null +++ b/cmd/systool.c @@ -0,0 +1,706 @@ +/* + * systool.c + * + * Sysfs utility to list buses, classes, and devices + * + * Copyright (C) 2003 International Business Machines, Inc. + * + * 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. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * 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. + * + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <mntent.h> +#include <dirent.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <errno.h> +#include <ctype.h> + +#include "libsysfs.h" + +/* Command Options */ +static int show_options = 0; /* bitmask of show options */ +static char *attribute_to_show = NULL; /* show value for this attribute */ +static char *device_to_show = NULL; /* show only this bus device */ + +#define SHOW_ATTRIBUTES 0x01 /* show attributes command option */ +#define SHOW_ATTRIBUTE_VALUE 0x02 /* show an attribute value option */ +#define SHOW_DEVICES 0x04 /* show only devices option */ +#define SHOW_DRIVERS 0x08 /* show only drivers option */ +#define SHOW_ALL_ATTRIB_VALUES 0x10 /* show all attributes with values */ + +#define SHOW_ALL 0xff + +static char cmd_options[] = "aA:b:c:dDhr:v"; + +/* + * binary_files - defines existing sysfs binary files. These files will be + * printed in hex. + */ +static char *binary_files[] = { + "config", + "data" +}; + +static int binfiles = 2; + +/** + * usage: prints utility usage. + */ +void usage(void) +{ + fprintf(stdout, "Usage: systool [<options> [device]]\n"); + fprintf(stdout, "\t-a\t\t\tShow attributes\n"); + fprintf(stdout, "\t-b <bus_name>\t\tShow a specific bus\n"); + fprintf(stdout, "\t-c <class_name>\t\tShow a specific class\n"); + fprintf(stdout, "\t-d\t\t\tShow only devices\n"); + fprintf(stdout, "\t-h\t\t\tShow usage\n"); + fprintf(stdout, + "\t-r <root_device>\tShow a specific root device tree\n"); + fprintf(stdout, "\t-v\t\t\tShow all attributes with values\n"); + fprintf(stdout, "\t-A <attribute_name>\tShow attribute value\n"); + fprintf(stdout, "\t-D\t\t\tShow only drivers\n"); +} + +/** + * indent: called before printing a line, it adds indent to the line up to + * level passed in. + * @level: number of spaces to indent. + */ +void indent(int level) +{ + int i; + + for (i = 0; i <= level; i++) + fprintf(stdout, " "); +} + +/** + * remove_end_newline: removes newline on the end of an attribute value + * @value: string to remove newline from + */ +void remove_end_newline(char *value) +{ + char *p = value + (strlen(value) - 1); + + if (p != NULL && *p == '\n') + *p = '\0'; +} + +/** + * show_device_children: prints out device subdirs. + * @sdir: print this directory's subdirectories/children. + */ +void show_device_children(struct sysfs_directory *sdir, int level) +{ + if (sdir != NULL) { + indent(level); + fprintf(stdout, "Children:\n"); + if (sdir->subdirs != NULL) { + char dirname[SYSFS_NAME_LEN]; + struct sysfs_directory *cur = sdir->subdirs; + + while (cur != NULL) { + indent(level+4); + if ((sysfs_get_name_from_path(cur->path, + dirname, SYSFS_NAME_LEN)) == 0) + fprintf(stdout, "%s\n", dirname); + else + fprintf(stdout, "%s\n", cur->path); + cur = cur->next; + } + } + if (sdir->links != NULL) { + struct sysfs_link *curl = sdir->links; + + while (curl != NULL) { + indent(level+4); + fprintf(stdout, "%s\n", curl->name); + curl = curl->next; + } + } + } +} + +/** + * isbinaryvalue: checks to see if attribute is binary or not. + * @attr: attribute to check. + * returns 1 if binary, 0 if not. + */ +int isbinaryvalue(struct sysfs_attribute *attr) +{ + char attrname[SYSFS_NAME_LEN]; + int i; + + if (attr == NULL || attr->value == NULL) + return 0; + + if ((sysfs_get_name_from_path(attr->path, attrname, SYSFS_NAME_LEN)) + != 0) + return 0; + + for (i = 0; i < binfiles; i++) + if ((strcmp(attrname, binary_files[i])) == 0) + return 1; + + return 0; +} + +/** + * show_attribute_value: prints out single attribute value. + * @attr: attricute to print. + */ +void show_attribute_value(struct sysfs_attribute *attr, int level) +{ + if (attr == NULL) + return; + + if (attr->method & SYSFS_METHOD_SHOW) { + if (isbinaryvalue(attr) != 0) { + int i; + fprintf(stdout, "\t: "); + for (i = 0; i < attr->len; i++) { + if (!(i %16)) { + fprintf(stdout, "\n"); + indent(level+8); + } else if (!(i %8)) + fprintf(stdout, " "); + fprintf(stdout, "%02x ", + (unsigned char)attr->value[i]); + } + fprintf(stdout, "\n"); + + } else if (attr->value != NULL && strlen(attr->value) > 0) { + remove_end_newline(attr->value); + fprintf(stdout, "\t: %s\n", attr->value); + } else + fprintf(stdout, "\n"); + } else { + fprintf(stdout, "\t: store method only\n"); + } +} + +/** + * show_attribute: prints out a single attribute + * @attr: attribute to print. + */ +void show_attribute(struct sysfs_attribute *attr, int level) +{ + char attrname[SYSFS_NAME_LEN]; + + if (attr == NULL) + return; + + if ((sysfs_get_name_from_path(attr->path, attrname, SYSFS_NAME_LEN)) + != 0) + return; + + if (show_options & SHOW_ALL_ATTRIB_VALUES) { + indent(level); + fprintf(stdout, "%s", attrname); + show_attribute_value(attr, level); + + } else if ((show_options & SHOW_ATTRIBUTES) || ((show_options + & SHOW_ATTRIBUTE_VALUE) && (strcmp(attrname, attribute_to_show) + == 0))) { + indent(level); + fprintf (stdout, "%s", attrname); + if (show_options & SHOW_ATTRIBUTE_VALUE && attr->value + != NULL && (strcmp(attrname, attribute_to_show)) == 0) + show_attribute_value(attr, level); + + else + fprintf(stdout, "\n"); + } +} + +/** + * show_attributes: prints out a directory's attributes. + * @sdir: print this directory's attributes/files. + */ +void show_attributes(struct sysfs_directory *sdir, int level) +{ + if (sdir != NULL && sdir->attributes != NULL) { + struct sysfs_attribute *cur = sdir->attributes; + + indent(level); + fprintf (stdout, "Attributes:\n"); + while (cur != NULL) { + show_attribute(cur, (level+4)); + cur = cur->next; + } + } +} + +/** + * show_device: prints out device information. + * @device: device to print. + */ +void show_device(struct sysfs_device *device, int level) +{ + if (device != NULL && device->directory != NULL) { + indent(level); + fprintf (stdout, "%s %s\n", device->bus_id, device->name); + if (device->directory->subdirs != NULL + || device->directory->links != NULL) + show_device_children(device->directory, (level+4)); + if (device->directory->attributes != NULL && (show_options + & (SHOW_ATTRIBUTES | SHOW_ATTRIBUTE_VALUE + | SHOW_ALL_ATTRIB_VALUES))) + show_attributes(device->directory, (level+4)); + if (device->driver != NULL) { + indent(level+4); + fprintf (stdout, "Driver: %s\n", + device->driver->name); + } + } +} + +/** + * show_root_device: prints out sys/devices device information. + * @device: device to print. + */ +void show_root_device(struct sysfs_device *device, int level) +{ + if (device != NULL && device->directory != NULL) { + indent(level); + fprintf (stdout, "%s %s\n", device->bus_id, device->name); + if (device->directory->attributes != NULL && (show_options + & (SHOW_ATTRIBUTES | SHOW_ATTRIBUTE_VALUE + | SHOW_ALL_ATTRIB_VALUES))) + show_attributes(device->directory, (level+4)); + } +} + +/** + * show_driver_attributes: prints out driver attributes . + * @driver: print this driver's attributes. + */ +void show_driver_attributes(struct sysfs_driver *driver, int level) +{ + if (driver != NULL && driver->directory != NULL) { + struct sysfs_directory *sdir = driver->directory; + + if (sdir->attributes != NULL) { + struct sysfs_attribute *cur = sdir->attributes; + + indent(level); + fprintf (stdout, "%s Attributes:\n", driver->name); + while (cur != NULL) { + show_attribute(cur, (level+4)); + cur = cur->next; + } + } + } +} + +/** + * show_driver_devices: prints out devices under driver. + * @driver: print devices bound to this driver. + */ +void show_driver_devices(struct sysfs_driver *driver, int level) +{ + if (driver != NULL && driver->directory != NULL) { + struct sysfs_directory *sdir = driver->directory; + + if (sdir->links != NULL) { + struct sysfs_link *cur = sdir->links; + + indent(level); + fprintf (stdout, "Devices:\n"); + while (cur != NULL) { + indent(level+4); + fprintf (stdout, "%s\n", cur->name); + cur = cur->next; + } + } + } +} + +/** + * show_driver: prints out driver information. + * @driver: driver to print. + */ +void show_driver(struct sysfs_driver *driver, int level) +{ + struct sysfs_directory *sdir = NULL; + + if (driver != NULL) { + indent(level); + fprintf (stdout, "%s\n", driver->name); + sdir = driver->directory; + if (sdir != NULL) { + if (sdir->links != NULL) + show_driver_devices(driver, (level+4)); + if(sdir->attributes != NULL && (show_options + & (SHOW_ATTRIBUTES | SHOW_ATTRIBUTE_VALUE + | SHOW_ALL_ATTRIB_VALUES))) + show_driver_attributes(driver, (level+4)); + } + } +} + +/** + * show_device_tree: prints out device tree. + * @root: root device + */ +void show_device_tree(struct sysfs_device *root, int level) +{ + if (root != NULL) { + struct sysfs_device *cur = NULL; + + if (device_to_show == NULL || (strcmp(device_to_show, + root->bus_id) == 0)) { + show_root_device(root, level); + } + cur = root->children; + while (cur != NULL) { + show_device_tree(cur, (level+6)); + cur = cur->next; + } + } +} + +/** + * show_sysfs_bus: prints out everything on a bus. + * @busname: bus to print. + * returns 0 with success or 1 with error. + */ +int show_sysfs_bus(char *busname) +{ + struct sysfs_bus *bus = NULL; + struct sysfs_device *curdev = NULL; + struct sysfs_driver *curdrv = NULL; + + if (busname == NULL) { + errno = EINVAL; + return 1; + } + bus = sysfs_open_bus(busname); + if (bus == NULL) { + fprintf(stderr, "Error opening bus %s\n", busname); + return 1; + } + + fprintf(stdout, "Bus: %s\n", busname); + if (bus->devices != NULL && (show_options & SHOW_DEVICES)) { + curdev = bus->devices; + if (device_to_show == NULL) + fprintf(stdout, "Devices:\n"); + while (curdev != NULL) { + if (device_to_show == NULL || (strcmp(device_to_show, + curdev->bus_id) == 0)) + show_device(curdev, 2); + curdev = curdev->next; + } + } + if (bus->drivers != NULL && (show_options & SHOW_DRIVERS)) { + curdrv = bus->drivers; + fprintf(stdout, "Drivers:\n"); + while (curdrv != NULL) { + show_driver(curdrv, 2); + curdrv = curdrv->next; + } + } + sysfs_close_bus(bus); + return 0; +} + +/** + * show_class_device: prints out class device. + * @dev: class device to print. + */ +void show_class_device(struct sysfs_class_device *dev, int level) +{ + struct sysfs_directory *cur = NULL; + char dirname[SYSFS_NAME_LEN]; + + if (dev != NULL) { + indent(level); + fprintf(stdout, "%s\n", dev->name); + if (dev->directory != NULL && (show_options + & (SHOW_ATTRIBUTES | SHOW_ATTRIBUTE_VALUE + | SHOW_ALL_ATTRIB_VALUES))) { + show_attributes(dev->directory, (level+4)); + cur = dev->directory->subdirs; + while (cur != NULL) { + if ((sysfs_get_name_from_path(cur->path, + dirname, SYSFS_NAME_LEN)) == 0) { + indent(level+4); + fprintf(stdout, "%s\n", dirname); + } + show_attributes(cur, (level+4)); + cur = cur->next; + } + } + if (dev->sysdevice != NULL && (show_options & SHOW_DEVICES)) + show_device(dev->sysdevice, (level+4)); + if (dev->driver != NULL && (show_options & SHOW_DRIVERS)) + show_driver(dev->driver, (level+4)); + } +} + +/** + * show_sysfs_class: prints out sysfs class and all its devices. + * @classname: class to print. + * returns 0 with success and 1 with error. + */ +int show_sysfs_class(char *classname) +{ + struct sysfs_class *cls = NULL; + struct sysfs_class_device *cur = NULL; + + if (classname == NULL) { + errno = EINVAL; + return 1; + } + cls = sysfs_open_class(classname); + if (cls == NULL) { + fprintf(stderr, "Error opening class %s\n", classname); + return 1; + } + fprintf(stdout, "Class: %s\n", classname); + if (cls->devices != NULL) { + cur = cls->devices; + if (device_to_show == NULL) + fprintf(stdout, "Class Devices:\n"); + while (cur != NULL) { + if (device_to_show == NULL || (strcmp(device_to_show, + cur->name) == 0)) + show_class_device(cur, 2); + cur = cur->next; + } + } + + sysfs_close_class(cls); + return 0; +} + +/** + * show_sysfs_root: prints out sysfs root device tree + * @rootname: device root to print. + * returns 0 with success and 1 with error. + */ +int show_sysfs_root(char *rootname) +{ + struct sysfs_device *root = NULL; + char path[SYSFS_PATH_MAX]; + + if (rootname == NULL) { + errno = EINVAL; + return 1; + } + if (sysfs_get_mnt_path(path, SYSFS_PATH_MAX) != 0) { + perror("sysfs_get_mnt_path"); + fprintf(stderr, "Error getting sysfs mount point\n"); + exit(1); + } + + strcat(path, SYSFS_DEVICES_DIR); + strcat(path, "/"); + strcat(path, rootname); + root = sysfs_open_device_tree(path); + if (root == NULL) { + fprintf(stderr, "Error opening root device %s\n", rootname); + return 1; + } + fprintf(stdout, "Root Device Tree: %s\n", rootname); + show_device_tree(root, 2); + sysfs_close_device_tree(root); + + return 0; +} + +/** + * show_subdirectories: prints all subdirectory names at path + * @path: sysfs path where subdirs are. + * returns 0 with success or 1 with error. + */ +int show_subdirectories(char *path, int level) +{ + struct sysfs_directory *dir = NULL, *current = NULL; + char name[SYSFS_NAME_LEN]; + int ret = 0; + + dir = sysfs_open_directory(path); + if (dir == NULL) { + fprintf(stderr, "Error opening sysfs directory at %s\n", path); + return 1; + } + if ((sysfs_read_directory(dir)) != 0) { + fprintf(stderr, "Error reading sysfs directory at %s\n", path); + sysfs_close_directory(dir); + return 1; + } + + current = dir->subdirs; + while (current != NULL) { + if ((sysfs_get_name_from_path(current->path, name, + SYSFS_NAME_LEN)) != 0) { + sysfs_close_directory(dir); + return 1; + } + indent(level); + fprintf(stdout, "%s\n", name); + current = current->next; + } + sysfs_close_directory(dir); + return ret; +} + +/** + * show_default_info: prints current buses, classes, and root devices + * supported by sysfs. + * returns 0 with success or 1 with error. + */ +int show_default_info(void) +{ + char sysfs_root[SYSFS_PATH_MAX]; + char path_to_print[SYSFS_PATH_MAX]; + int retval = 0; + + /* get sysfs mount point */ + if (sysfs_get_mnt_path(sysfs_root, SYSFS_PATH_MAX) != 0) { + perror("sysfs_get_mnt_path"); + fprintf(stderr, "Error getting sysfs mount point\n"); + exit(1); + } + strcpy(path_to_print, sysfs_root); + + /* print supported buses */ + strcat(path_to_print, SYSFS_BUS_DIR); + fprintf(stdout, "Supported sysfs buses:\n"); + retval = show_subdirectories(path_to_print, 4); + + if (retval == 0) { + /* print supported classes */ + strcpy(path_to_print, sysfs_root); + strcat(path_to_print, SYSFS_CLASS_DIR); + fprintf(stdout, "Supported sysfs classes:\n"); + retval = show_subdirectories(path_to_print, 4); + } + + if (retval == 0) { + /* print supported root devices */ + strcpy(path_to_print, sysfs_root); + strcat(path_to_print, SYSFS_DEVICES_DIR); + fprintf(stdout, "Supported sysfs root devices:\n"); + retval = show_subdirectories(path_to_print, 4); + } + + return retval; +} + +/* MAIN */ +int main(int argc, char *argv[]) +{ + char *show_bus = NULL; + char *show_class = NULL; + char *show_root = NULL; + int retval = 0; + int opt; + extern int optind; + extern char *optarg; + + while((opt = getopt(argc, argv, cmd_options)) != EOF) { + switch(opt) { + case 'a': + show_options |= SHOW_ATTRIBUTES; + break; + case 'A': + if ((strlen(optarg) + 1) > SYSFS_NAME_LEN) { + fprintf(stderr, + "Attribute name %s is too long\n", + optarg); + exit(1); + } + attribute_to_show = optarg; + show_options |= SHOW_ATTRIBUTE_VALUE; + break; + case 'b': + show_bus = optarg; + break; + case 'c': + show_class = optarg; + break; + case 'd': + show_options |= SHOW_DEVICES; + break; + case 'D': + show_options |= SHOW_DRIVERS; + break; + case 'h': + usage(); + exit(0); + break; + case 'r': + show_root = optarg; + break; + case 'v': + show_options |= SHOW_ALL_ATTRIB_VALUES; + break; + default: + usage(); + exit(1); + } + } + argc -= optind; + argv += optind; + + switch(argc) { + case 0: + break; + case 1: + /* get bus to view */ + if ((strlen(*argv)) < SYSFS_NAME_LEN) { + device_to_show = *argv; + show_options |= SHOW_DEVICES; + } else { + fprintf(stderr, + "Invalid argument - device name too long\n"); + exit(1); + } + break; + default: + usage(); + exit(1); + } + + if ((show_bus == NULL && show_class == NULL && show_root == NULL) + && (show_options & (SHOW_ATTRIBUTES | SHOW_ATTRIBUTE_VALUE + | SHOW_DEVICES | SHOW_DRIVERS | SHOW_ALL_ATTRIB_VALUES))) { + fprintf(stderr, + "Please specify a bus, class, or root device\n"); + usage(); + exit(1); + } + /* default is to print devices */ + if (!(show_options & (SHOW_DEVICES | SHOW_DRIVERS))) + show_options |= SHOW_DEVICES; + + if (show_bus != NULL) + retval = show_sysfs_bus(show_bus); + if (show_class != NULL) + retval = show_sysfs_class(show_class); + if (show_root != NULL) + retval = show_sysfs_root(show_root); + + if (show_bus == NULL && show_class == NULL && show_root == NULL) + retval = show_default_info(); + + exit(retval); +} |