diff options
| -rw-r--r-- | extras/udevinfo/Makefile | 28 | ||||
| -rw-r--r-- | extras/udevinfo/udevinfo.c | 295 |
2 files changed, 301 insertions, 22 deletions
diff --git a/extras/udevinfo/Makefile b/extras/udevinfo/Makefile index f31c8c11e9..b740b25331 100644 --- a/extras/udevinfo/Makefile +++ b/extras/udevinfo/Makefile @@ -1,14 +1,28 @@ PROG=udevinfo -LD=$(CC) -OBJS=udevinfo.o +OBJS= ../../udev_config.o \ + ../../udev-add.o \ + ../../udev-remove.o \ + ../../udevdb.o \ + ../../logging.o \ + ../../namedev.o \ + ../../namedev_parse.o \ + ../../libsysfs/sysfs_bus.o \ + ../../libsysfs/sysfs_class.o \ + ../../libsysfs/sysfs_device.o \ + ../../libsysfs/sysfs_dir.o \ + ../../libsysfs/sysfs_driver.o \ + ../../libsysfs/sysfs_utils.o \ + ../../libsysfs/dlist.o \ + ../../tdb/tdb.o \ + ../../tdb/spinlock.o \ -all: $(PROG) +all: $(PROG) -clean: - rm -f $(PROG) $(OBJS) +$(PROG): $(PROG).o + $(LD) $(LDFLAGS) -o $(PROG) $(PROG).o $(OBJS) -lc -$(PROG): $(OBJS) - $(LD) $(LDFLAGS) -o $(PROG) $(CRT0) $(OBJS) $(SYSFS) +clean: + rm -f $(PROG) $(OBJS) $(PROG).o me: cd ../..; make EXTRAS=extras/udevinfo diff --git a/extras/udevinfo/udevinfo.c b/extras/udevinfo/udevinfo.c index c5934be2d4..3f03901f49 100644 --- a/extras/udevinfo/udevinfo.c +++ b/extras/udevinfo/udevinfo.c @@ -23,21 +23,29 @@ #include <string.h> #include <stdio.h> #include <ctype.h> +#include <stdarg.h> +#include <unistd.h> +#include <errno.h> -#include "libsysfs.h" +#include "../../udev.h" +#include "../../udev_version.h" +#include "../../logging.h" +#include "../../udevdb.h" +#include "../../libsysfs/libsysfs.h" -# define VALUE_SIZE 200 +# define SYSFS_VALUE_MAX 200 char **main_argv; +int main_argc; char **main_envp; -static int print_all_attributes(char *path) +static int print_all_attributes(const char *path) { struct dlist *attributes; struct sysfs_attribute *attr; struct sysfs_directory *sysfs_dir; - char value[VALUE_SIZE]; + char value[SYSFS_VALUE_MAX]; int len; int retval = 0; @@ -53,7 +61,7 @@ static int print_all_attributes(char *path) dlist_for_each_data(attributes, attr, struct sysfs_attribute) { if (attr->value != NULL) { - strncpy(value, attr->value, VALUE_SIZE); + strncpy(value, attr->value, SYSFS_VALUE_MAX); len = strlen(value); if (len == 0) continue; @@ -82,24 +90,38 @@ exit: return retval; } -int main(int argc, char **argv, char **envp) +/* callback for database dump */ +static int print_record(char *path, struct udevice *dev) +{ + 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"); + return 0; +} + +enum query_type { + NONE, + NAME, + PATH, + SYMLINK, + MODE, + OWNER, + GROUP +}; + +static int print_device_chain(const char *path) { - main_argv = argv; - main_envp = envp; 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; - char *path; int retval = 0; - if (argc != 2) { - printf("Usage: udevinfo <sysfs_device_path>\n"); - return -1; - } - path = argv[1]; - /* get the class dev */ class_dev = sysfs_open_class_device_path(path); if (class_dev == NULL) { @@ -157,3 +179,246 @@ exit: //sysfs_close_class_device(class_dev); return retval; } + +static int process_options(void) +{ + static const char short_options[] = "adn:p:q:rVh"; + int option; + int retval = 1; + struct udevice dev; + 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]; + char *pos; + + /* get command line options */ + while (1) { + option = getopt(main_argc, main_argv, short_options); + if (option == -1) + break; + + dbg("option '%c'", option); + switch (option) { + case 'n': + dbg("udev name: %s\n", optarg); + strfieldcpy(name, optarg); + break; + + case 'p': + dbg("udev path: %s\n", optarg); + strfieldcpy(path, optarg); + break; + + case 'q': + dbg("udev query: %s\n", optarg); + + if (strcmp(optarg, "name") == 0) { + 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; + break; + } + + if (strcmp(optarg, "group") == 0) { + query = GROUP; + break; + } + + if (strcmp(optarg, "path") == 0) { + query = PATH; + break; + } + + printf("unknown query type\n"); + exit(1); + + case 'r': + root = 1; + break; + + case 'a': + attributes = 1; + 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); + + case 'V': + printf("udev, version %s\n", UDEV_VERSION); + exit(0); + + case 'h': + retval = 0; + case '?': + default: + goto help; + } + } + + /* process options */ + if (query != NONE) { + retval = udevdb_open_ro(); + if (retval != 0) { + printf("unable to open udev database\n"); + return -EACCES; + } + + if (path[0] != '\0') { + /* remove sysfs_path if given */ + if (strncmp(path, sysfs_path, strlen(sysfs_path)) == 0) { + pos = path + strlen(sysfs_path); + } else { + if (path[0] != '/') { + /* prepend '/' if missing */ + strcat(temp, "/"); + strncat(temp, path, sizeof(path)); + pos = temp; + } else { + pos = path; + } + } + retval = udevdb_get_dev(pos, &dev); + if (retval != 0) { + printf("device not found in database\n"); + goto exit; + } + goto print; + } + + if (name[0] != '\0') { + /* remove udev_root if given */ + if (strncmp(name, udev_root, strlen(udev_root)) == 0) { + pos = name + strlen(udev_root); + } else + pos = name; + retval = udevdb_get_dev_byname(pos, path, &dev); + if (retval != 0) { + printf("device not found in database\n"); + goto exit; + } + goto print; + } + + printf("query needs device path(-p) or node name(-n) specified\n"); + goto exit; + +print: + switch(query) { + case NAME: + if (root) + strfieldcpy(result, udev_root); + strncat(result, dev.name, sizeof(result)); + 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; + + default: + goto exit; + } + 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; + } else { + if (strncmp(path, sysfs_path, strlen(sysfs_path)) != 0) { + /* prepend sysfs mountpoint if not given */ + strfieldcpy(temp, path); + strfieldcpy(path, sysfs_path); + strncat(path, temp, sizeof(path)); + } + print_device_chain(path); + return 0; + } + } + + if (root) { + printf("%s\n", udev_root); + return 0; + } + +help: + printf("Usage: [-anpqrdVh]\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" + " -p PATH sysfs device path used for query or chain\n" + " -n NAME node name used for query\n" + "\n" + " -r print udev root\n" + " -a print all attributes along the chain of the device\n" + " -d dump whole 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; + main_envp = envp; + + /* initialize our configuration */ + udev_init_config(); + + retval = process_options(); + if (retval != 0) + exit(1); + exit(0); +} |